CA2162175C - Mobile tire shredder - Google Patents
Mobile tire shredder Download PDFInfo
- Publication number
- CA2162175C CA2162175C CA 2162175 CA2162175A CA2162175C CA 2162175 C CA2162175 C CA 2162175C CA 2162175 CA2162175 CA 2162175 CA 2162175 A CA2162175 A CA 2162175A CA 2162175 C CA2162175 C CA 2162175C
- Authority
- CA
- Canada
- Prior art keywords
- shredder
- storage chamber
- body structure
- truck
- conveyor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
- B02C21/02—Transportable disintegrating plant
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/02—Separating plastics from other materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
- B65F3/00—Vehicles particularly adapted for collecting refuse
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
- B65F3/00—Vehicles particularly adapted for collecting refuse
- B65F3/14—Vehicles particularly adapted for collecting refuse with devices for charging, distributing or compressing refuse in the interior of the tank of a refuse vehicle
- B65F3/20—Vehicles particularly adapted for collecting refuse with devices for charging, distributing or compressing refuse in the interior of the tank of a refuse vehicle with charging pistons, plates, or the like
- B65F3/201—Vehicles particularly adapted for collecting refuse with devices for charging, distributing or compressing refuse in the interior of the tank of a refuse vehicle with charging pistons, plates, or the like the charging pistons, plates or the like moving rectilinearly
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65F—GATHERING OR REMOVAL OF DOMESTIC OR LIKE REFUSE
- B65F3/00—Vehicles particularly adapted for collecting refuse
- B65F3/24—Vehicles particularly adapted for collecting refuse with devices for unloading the tank of a refuse vehicle
- B65F3/28—Vehicles particularly adapted for collecting refuse with devices for unloading the tank of a refuse vehicle by a lengthwise movement of a wall, e.g. a plate, a piston, or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C2201/00—Codes relating to disintegrating devices adapted for specific materials
- B02C2201/04—Codes relating to disintegrating devices adapted for specific materials for used tyres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B2017/0094—Mobile recycling devices, e.g. devices installed in truck trailers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2021/00—Use of unspecified rubbers as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2030/00—Pneumatic or solid tyres or parts thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Food Science & Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Disintegrating Or Milling (AREA)
- Processing Of Solid Wastes (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
A motor truck for use in collecting and processing solid waste material such as scrap tires. The truck includes a chassis including a cab (18); a body structure (34) positioned on the chassis behind the cab and defining a storage chamber (35); a shredder (36) mounted on top of the body structure (34) forwardly of the storage chamber (35); a compactor (38) positioned within the body structure (34) beneath the shredder (36) and forwardly of the storage chamber (35); and a conveyor system (40) for conveying tires from a curbside location upwardly for discharge downwardly into the open upper end of the shredder (36). The shredded tires are discharged downwardly into the body structure (34) rearwardly of the compactor (38), whereafter the compactor (38) is actuated to stroke rearwardly and compress the tire shreds into the storage chamber. After the truck has visited a series of retail tire outlets and the storage chamber (35) is full of tire shreds, the truck returns to a recycling center where a door (42) at the rear of the storage chamber is opened and the compactor (38) is utilized as an ejector to eject the tire shreds from the storage chamber (35). At the recycling center the tire shreds are processed to form a rubber crump material and the rubber crump material is combined with scrap plastic to form a rubbber/plastic resin compound in pellet form.
Description
MOBILE TIRE SHREDDER
Backaround of the invention This invention relates to a mobile apparatus for mechanically shearing or shredding solid waste material such as rubber tires.
Disposal of solid waste materials represents a substantial ecological and economic problem. More particularly, scrap automobile tires present an especially vexing ecological and economic problem. Each year there are an estimated 280 million scrap tires discarded throughout North America. Unwanted scrap tire piles scattered throughout the countryside have been estimated to contain as many as 3 billion tires. Scrap tires' poor biodegradability, their tendency to trap gasses and rise to the surface in landfills, the serious fire hazard scrap tires represent, and the breeding environment that unwanted scrap tires offer to disease-carrying pests such as rodents and mosquitos have caused them to be- classified as a serious environmental nuisance.
The vast majority of used tires are generated at retail tire outlets where the used tires are removed from vehicles prior to installation of new tires.
Traditionally, the tires have been collected from the retail tire outlets by small independent truck operators who merely pick up the old tires, receive a fee for each tire collected, and deposit the old tires at municipal or private dump sites. Specifically, the tires are typically taken from the retailer in a stake truck, are then transferred from the stake truck into a transport trailer, and are then taken in the transport trailer to a tire dump site. This entire collection process, even if efficiently carried out, only exacerbates the existing environmental problem since the supply of festering tires at the dump sites continues to multiply and the availability of dump sites continues to dwindle. Further, the collection process itself is rather inefficient since it is not uncommon for individuals to collect tires from a retail outlet, receive a specified payment for each tire collected, but then never deliver the tires to an authorized dump site. Rather, the tires end up being dumped at the most convenient or closest location where they become an eyesore and further exacerbate the environmental problems associated with tire disposal.
Summary of the Invention This invention is directed to the provision of an improved apparatus and methodology for recycling used tires.
More specifically, this invention is directed to the provision of improved methodology and apparatus whereby the tires are efficiently collected from retail outlets and efficiently recycled.
The invention contemplates the provision of a 25 unique motor truck capable of being dispatched to retail tire outlets where used tires are collected on a regular basis, shredded on the site by a shredder carried on the vehicle, stored in shredded form in a storage container provided on the vehicle, and then, when the storage = - 3 -container is full, taken by the truck to a suitable processing or recycling facility.
According to an important feature of the invention, the truck comprises a chassis; a shredder mounted on the chassis; a storage chamber mounted on the chassis; and a compactor mounted on the chassis for stroking movement, positioned to receive the output of the shredder, and operative when stroked to move the shredded output into the storage chamber. This arrangement allows the tires or other waste material to be shredded at the retail site and stored in the vehicle so as to enable the vehicle to visit several'xretail sites and, when the storage chamber is full of the shredded material such as shredded tires, return to a recycling center to deliver the shredded material to the recycling center for use in producing a suitable compound for recycling purposes.
According to a further feature of the invention, the truck includes a body assembly mounted on the chassis and including a body structure defining the storage chamber; the shredder is mounted on the body structure; and the compactor is positioned within the body structure beneath the shredder and rearwardly of the storage chamber.
With this arrangement, the compactor receives the discharge of the shredder and operates when actuated to move the = 25 shredded discharge into the storage chamber so as to make room for further shredded product from the shredder.
According to a further feature of the invention, the truck further includes a conveyor assembly extending from a location proximate the support surface for the motor truck to a location proximate the entry to the shredder so WO 94/25168 ~ 1621 75 PCT/CA94/00250 - 4 - ~
that waste articles such as tires may be deposited on the conveyor assembly proximate the support surface and moved by the conveyor assembly to the shredder for shredding by the shredder and delivery to the compactor for movement into the storage chamber.
According to a further feature of the invention, the body structure includes a closure member at the rear end of the storage chamber operative when opened to allow the contents of the storage chamber to be discharged rearwardly out of the chamber and the compactor is operative when actuated with the closure member in an open position to discharge the contents of the storage chamber rearwardly out of the chamber through the open rear end of the body structure. This arrangement allows the compactor to serve both as a means of compacting the shredded material at each retail site as well as a means of ultimately ejecting all of the shredded material after the storage container has been filled and after the vehicle has been driven to a suitable recycling location.
According to a further feature of the invention, the truck includes a hydraulic pump driven by the engine of the truck and a hydraulic motor driving the shredder and receiving a supply of pressurized hydraulic fluid from the hydraulic pump. This arrangement allows the truck prime mover to provide the power for the shredder rather than =
requiring a separate power source on the vehicle to power the shredder.
According to a further feature of the invention, the truck further includes a further pump driven by the engine of the truck and a further hydraulic motor driving WO 94/25168 21" 21' 5 PCT/CA94/00250 = - 5 -the conveyor system and receiving a supply of pressurized hydraulic fluid from the conveyor pump. This arrangement allows the truck to perform both the pickup and the shredding of the waste material without the need for a = 5 separate power source on the vehicle.
The invention also provides a methodology for producing a rubber crumb material at a recycling center.
According to the invention methodology, vehicles are dispatched to retail sales locations for rubber tires; at each location a supply of used tires is collected, the tires are shredded, and the shredded tires are stored in the vehicles; and the vehicles, carrying the stored shredded tires, are thereafter returned to the recycling center where the shredded tires are discharged for reduction to rubber crumb material. This methodology provides a convenient means of addressing the ecological problems created by used tires and further provides a source of commercially usable rubber crumb material.
Brief Description of the Drawings FIGURE 1 is a perspective curbside view of a motor truck according to the invention;
FIGURE 2 is a perspective roadside view of the invention motor truck;
= FIGURE 3 is a side elevational view of the roadside of the invention motor truck;
FIGURE 4 is a cross-sectional view taken on line 4-4 of FIGURE 3;
FIGURE 5 is a diagrammatic plan view of the invention truck;
-6- =
FIGURES 6 and 7 are detail views of a conveyor system utilized in the invention truck;
FIGURE 8 is a detail view of a control panel provided on the invention motor truck;
FIGURE 9 is a schematic view illustrating the invention methodology; and FIGURE 10 is a perspective view of a cart utilized in carrying out the invention methodology.
Detailed Description of the Preferred Embodiment The invention motor truck, in overview, is designed to travel to a retail tire outlet, pick up a supply of used tires from the outlet, shred the tires on site, store the shredded tires in the truck, thereafter visit further retail tire outlets until the storage capacity of the truck has been exhausted and thereafter return to a recycling center where the shredded tire product is ejected from the truck for use in formulating, for example, a rubber crumb material for recycling applications.
The invention motor truck, broadly considered, includes a chassis 10, a body assembly 12, a hydraulic system 14, and a control system 16.
Chassis 10 is of known form and includes a cab 18, front wheels 20, rear wheels 22, a platform frame 24, an engine 26 of gasoline or diesel configuration, and a drive train 28 including a transmission 30.
Cab 18 may, as shown, be of the cab-over-engine type and may include a side entry door 32 and a windshield 33. Front wheels 20 are steerable and may, if desirec},, also be driven.
Rear,wt:eals 22 have a tandem aonfiguratior with either the front set bf wheels driven by tha drive train 28 or both front and rear sets of wheels driven by the drive train.
platform frame 24 isr of standard construction and includes parallel fra.ms rails extending rearwardly from the cab 3.s to a position rearwardly of tYie 7rear wheels. It lo arill be understood that the front and rear wheels are connected to the cab 18 and the rails 32 by suspension means, not a.lltistrated.
Body asaembly 12 includes a body structure 34, a shredder 36, a compactor 39, and a conveyor assembly 40.
Body structure 34 is supported in known manner on atiassis rails 32 rears.*ardly of cab 3.8 and defines a storaqe chamber 3s. Body struature 34 inaludes a forw3x'd top wall 34a, a reaxw$rd tvp wall 34b joined to the forward top wall 34a by a vertical wall 34c, side wa11s 34d and 34e, a bottom wall 34f, a front va11 34g, and a rear opening 34h alosed by a gate 42 wott.titad for pivotal movement about a hirnge axis 44. Walls 34a, 34b, 34c, 34d, 34s, and 34g have a flat configuratfon and hottom wall 34f has a downwardly bowed configurati.on. Gate 42 includes sS.de wa?.ls 42a and a bowed main body poztion 42b.
Shredder 36 is positioned on body stz-ucture top wall 34a and includes a rectangular box or bin 36a defin3.ng a bottom ctiecharge opening 36b aligned with an opening 34i in body etructure forward top wa1-.1 34a. Shredder 36 further includes a nydraulia motor 45 driving para].Ie2 .. g ~, shradder schafts 46 through a geaae mEchanism 47. Fach shaft carries a plurality of rotary shearing blades 48 hatirixig teeth 48a. The shafts are cdunter rotated so that the shearing blades 48 are also counter rotated as seen by the arrows in Figure 4. Box 36a defir3es an open top 36c so that material may be fed into the box from above for shredding by the counter rotating blades 48, Ska.x'gdder 36 may take various fozzs and may, for example, comprise a a shredder sold as Model No. 4428 by IMAC Corporation of Grand Prairie, Texas under the trade-mark'SATIIRN. Shredder 36 also desirably includes a lid 49 mounted on box 36a for move}xaent between the i],lustrated open position and a closed posxtion closing the apened top of the box 36a. The lid is moved between its open and closed positiprir. by a hydraulic cylinder 50 secured to'a side faca of box 36a.
Compactor 38 is pasitioned within body structure 34 and has a tranaveram cross-sectional configuration generally corresponding to the cross-sectional configuration of the body structure. 6pccifa.call.y, compactor 38 inc].udes a flat front wall 38a, a bowed bottom wall 38b corresponding in configuration to the.bowed bottom wall 34f of "t,txe body staructure; a top wall 38c: flat side wa13.s 38d mounted ior sliding engagement with body structure side walls 34d, 34e; and a rear surface including a flat low4br rear surface 38e and an arcuate upper rear auu-face 38f eactr.T-ding from the top edge of loweX surface 38e in au,rvilinear fashion to the rear edge ot the top wall 38c. Contpactor 3$c is movable linearly within body structure aa in stroking fashion by a hydraulic cylinder 48 positioned between the front wall 34g of the body structure - s -xLrid the compactor and havir-g a multiple cylinder telescop'ic configuration so that the cylinder tay expand to tnariy times its stotiaed configuratio.n so as to enable the cylinder to rRove the compactor from the extxexne forward position seen in solid lines in Figure 3 to the extreme rearward position, proscimat-$ the rear opening 34h of the body structure, seen in dash lines in Figure 3.
convoyor asse7ubly 40 is a thxee-part campound agsembly including a chain conveyor '=50, a split belt conveyor 52, and a tail conveyor 54_ Chain conveyor 5D includes a pair of rigidly a,xtterconrxected = beam members 56 rotationally supporting a sprocket 58 at their 2owex ends and a sprocket 61 at their upper ends, and a chain 60 trained around sprockets 58 and 61 artid including spaced hooks 62. Seaats 56 are pivoted to body structua~a 34 -at 63 and a hydraulic oylinder 64 positioned beneath the body struct.ure f,ncludes a piston rod 66 erigaging the lower end of, bearns 56 and opa7Cative when acttsated to inove the chain conveyor 50 from the stored dotted line position of Piqttre 4 p7rexirnate the side wall 34e of the body-.structure and an extended operative position, seen in solid lines in Figure 4, in which the lower end of the chain conveyor has beern pivQtsd outwardly about the pivot axis 62. Chain conveyor 50 Xs powered by a hydraulic motor 68 driving a shaft 70 which is drivingly aorsreectad to the upper sprooket 61.
Split belt conveyor 52 inalu.des a pair of rollers 72 drivingly mou.rnted on shaft 70 on opposite sides of chain cnnveyor 50, a pair of forward rollers 74 drivingly connected, to a drive shagt 76 jovtx-nalled at its opposite - 10 - ~
ends in side plates 78, and a pair of belts 80 trained around a respective pair of rollers 72, 74. Motor 68 is secured to the outboard face of one of the side plates 78 so that actuation of the motor upon receipt of a supply of pressurized hydraulic fluid powers chain conveyor 50 via sprocket 60 and powers split belt conveyor 52 via rollers 72.
Tail conveyor 54 includes a roller 82 drivingly secured to shaft 76, a free end roller 84 suitably connected to roller 82 by frame means (not shown) and a belt 86 trained around rollers 82 and 84. Tail conveyor 54 is also driven by hydraulic motor 68", via rollers 72, belts 80, rollers 74, shaft 76, and roller 82. A hydraulic cylinder 88 (shown diagrammatically in phantom in Figure 4) interconnects the upper end of chain conveyor 50 and an intermediate location on split belt conveyor 52 and a further hydraulic cylinder 90 (also shown diagrammatically in phantom in Figure 4) interconnects split belt conveyor 52 and tail conveyor 54.
Tail conveyor 54 is movable between a dash line stowed position seen in Figure 4 to the solid line operative position seen in Figure 4 by actuation of cylinder 64 to move the bottom of the chain conveyor outwardly; actuation of cylinder 88 to pivot twin belt conveyor 52 upwardly about the upper end of the chain conveyor; and actuation of cylinder 90 to pivot the tail conveyor 54 clockwise relative to the outboard end of the split belt 52. The combined action of the cylinders 64, 88, and 90 positions the lower end of the chain conveyor proximate the support surface 92 of the vehicle in spaced ~ - 11 -relation to the side wall of the vehicle and positions the delivery end 54a of =the tail conveyor 54 in overlying relation to the blades 48 of the shredder.
Hydraulic system 14 includes a main pump 94 positioned forwardly of the cab of the vehicle and driven directly from the crank shaft of engine 26; hydraulic motor 45 driving the shredder; a hydraulic reservoir or tank 96 positioned beneath the body structure of the vehicle; and a valve 97.
Hydraulic system 14 further includes a further pump 98 driven by the transmission 30 of the vehicle; the conveyor motor. 68; a reservoir or tank 100 positioned beneath the vehicle body structure; and a valve 102.
Control system 16 includes a control panel 104 positioned on the curb side of the truck forwardly of the conveyor assembly with a plurality of control buttons for controlling the various operations of the invention truck.
Specifically, control panel 104 includes a control button 122 controlling the opening of the lid 49; a control button 124 controlling the closing of the lid 49; a control button 126 controlling the extension of the conveyor assembly 50;
a control button 128 controlling the retraction of the conveyor assembly 50; a control button 129 controlling power to the conveyor assembly; a control button 130 = 25 constituting an ON/OFF switch for the shredder 36; a control button 132 controlling the extension of the compactor 38; a control button 134 controlling the retraction of the compactor 138; a control button 136 operative to open the rear door 42; a control button 138 operative to close the rear door 42; and an emergency system shutoff button 140.
Control button 122 is operative when actuated to apply pressurized fluid to hydraulic cylinder 50 in a sense to retract or open the lid 49; control button 124 is operative when actuated to actuate cylinder 50 in a sense to return the lid to a position closing the top of the shredder; control button 126 is operative when actuated to energize cylinders 64, 88, and 90 in a sense to move the conveyor system 50 from the retracted, stored dash line position of Figure 4 to the solid line extended or operative position of Figure 4 in which the discharge end 54a of tail conveyor 54 is positioned over the shredder blades 48; control button 128 is operative when actuated to energize cylinders 64, 88, and 90 in a sense to return the conveyor system to its stored dash line position of Figure 4; control button 129 is operative when actuated to control valve 102 in a sense to deliver pressurized fluid from pump 98 to motor 68 so as to power the conveyor assembly and is operative when again actuated to control valve 102 in a sense to direct pressurized fluid from motor 68 and route the pressurized fluid via a bypass line 143 directly to reservoir 100 so as to shut off power to the conveyor assembly; control button 130 is operative when actuated to control valve 97 in a sense to deliver pressurized fluid from pump 94 to motor 46 so as to power the shredder and is operative when again actuated to control valve 97 in a sense to divert pressurized fluid from motor 46 and route the pressurized fluid via a bypass line 142 directly to the reservoir 96 so as to shut off WO 94/25168 21 b 217 5 PCT/CA94/00250 ~ - 13 -power to the shredder; control button 132 is operative when actuated to energize cylinder 48 in a sense to extend the cylinder and stroke the compactor rearwardly toward the rear of the body structure; control button 132 is operative when actuated to energize the cylinder 148 in a sense to retract the cylinder and retract the compactor to its solid line position of Figure 3; control button 136 is operative when actuated to actuate a hydraulic cylinder 141 in a sense move the door 42 to an open position; control button 138 is operative when actuated to energize cylinder 141 in a sense to move the rear door 42 to a closed position; and control button=140 is operative when actuated to shut off all power to the system in the event of a jam or other emergency.
In operation, the truck is driven by the operator to a retail sales outlet for motor vehicle tires where the used tires, accumulated at the retail sales outlet since the last visit of the truck, are collected, shredded, and stored in the storage chamber.
A cart 144 may be utilized to facilitate the storage of the used tires 145 at the retail outlet and to facilitate the loading of the tires onto the conveyor system 50. Specifically, cart 144 may comprise a pair of partitions 144a, 144b arranged at right angles to each other and upstanding from the bed 144c of the cart to divide the cart into four areas on each of which a plurality of tires (for example, five) can be stacked.
Upon the arrival of the motor truck at the retail site, the truck is parked with the engine idling so as to continuously drive pumps 94 and 98; the cart 142 is wheeled to a location proximate the conveyor assembly 50; control button 122 is actuated to move the lid 49 to an open position; control button 126 is actuated to move the conveyor assembly 50 to its extended operative position;
control button 129 is actuated to deliver pressurized fluid from pump 98 to motor 68 to power the conveyor assembly;
control button 130 is actuated to deliver pressurized fluid from pump 94 to motor 45 to power the shredder; the vehicle operator places a tire 145 on each hook 62 as the chain conveyor 56 moves in the direction of the arrows in Figures 4 and 6; the tires 145 are carried upwardly by chain conveyor 56, picked up by split belt conveyor 52 for delivery to tail conveyor 54, and discharged by tail conveyor 54 into the open top 36c of the shredder box 36a;
and the tires falling downwardly into the open top of the shredder box 36a pass between the counter rotating shredder blades 48 where they are shredded by shredder blade teeth 48a to produce a plurality of tire shreds or fragments 145a which pass through aligned openings 36b and 34a for downward discharge into the storage chamber 35 defined by body structure 34 at a location above and immediately rearwardly of compactor 38.
After all of the tires 145 at the retail sales outlet have been loaded onto the conveyor system and shredded by the shredder, control button 130 is again =
actuated to divert pressurized fluid from hydraulic motor 45 and turn off the shredder whereafter control button 132 is actuated to energize hydraulic cyylinder 48 in a sense to extend the compactor 38 and move the tire shreds 144a rearwardly within storage chamber 35; control button 134 is ~ - 15 -actuated to energize the hydraulic cylinder 48 in a sense to retract the compactor and return the compactor to its solid line position seen in Figure 3; control button 124 is actuated to move the lid 49 to its closed position; control button 129 is actuated to shut off power to the conveyor assembly; and control button 128 is actuated to return the conveyor assembly to its stored position.
The truck is now ready to be driven to another retail tire sales outlet where more tires 145 will be shredded and moved into the storage chamber. This process is continued until the storage chamber has been filled with tire shreds, 'whereafter the truck will return to a recycling or processing facility where the shredded contents of the truck are discharged. Specifically, upon arrival at the processing or recycling facility, control button 136 is actuated to open the rear door; control button 132 is actuated to extend the compactor and move the compactor from the solid line position of Figure 3 to the dash line position of Figure 3 and discharge all of the shredded tire contents from the vehicle onto a suitable surface or into a suitable container; control button 134 is actuated to return the compactor to its solid line position of Figure 3; and control button 138 is actuated to return the rear door 42 to its closed position.
The truck is now ready to resume the task of picking up used tires at a prescheduled series of retail tire outlets until the storage chamber has again been filled with tire shreds whereafter the truck will again return to the processing or recycling center to discharge its shredded contents.
It will be understood that the extent to which compactor 38 is moved rearwardly upon actuation of control button 132 will depend upon the amount of tire shreds already in the storage chamber. Specifically, the hydraulic system supplying pressurized hydraulic fluid to cylinder 48 includes a pressure sensor which shuts off the delivery of pressurized fluid to the cylinder 48 after a predetermined hydraulic fluid pressure is sensed corresponding to a predetermined resistance being encountered by the rearwardly moving compactor. It will further be understood that the rearward stroke or movement of the compactor will be less and less as the storage chamber becomes more and more filled with tire shreds until a situation is reached in which literally no rearward movement of the compactor is possible because of the stored tire shreds. As a further precaution to guard against overloading the storage chamber and overstressing the compactor, a photoelectric eye 150 is provided in the body structure immediately beneath the discharge opening of the shredder. When the beam of the photoelectric eye 150 senses that the tire shreds have reached a level corresponding to the level of the beam, the beam disables the shredder and the compactor so as to preclude the delivery of further tire shreds to the storage chamber with consequent overloading of the compactor. The concave, curvilinear rearward surface 38e of the compactor has the effect of moving tire shreds rearwardly and simultaneously upwardly as the compactor moves rearwardly so as to ensure that the entire storage chamber 35 is filled with tire shreds.
WO 94/25168 2(6Z 1/5 PCT/CA94/00250 ~ - 17 -Shredder 36 also desirably further includes a spray nozzle 152 positioned to discharge water downwardly into the area between the counter rotating blades 48 as the blades are rotating to shred tires 145. The water from nozzle 152 has the effect of cooling and lubricating the tire shreds 145a. It will be understood that a water tank and water pump (not shown) will also be provided to provide a supply of pressurized water to the nozzle 152.
The truck further includes a further photoelectric eye 154 positioned on the conveyor assembly and operative to count each tire as the tire is loaded onto the truck. Fo'r example, and as best seen in Figure 6, a photoelectric eye 154 may be provided on split belt conveyor 52 where it senses the passage of=each tire 145 between the elements of the photoelectric eye. The passage of each tire is arranged to be digitally read out on a suitable instrument in the cab 18 of the truck and a record of each tire loaded onto the truck is entered into a suitable memory device positioned in the cab of the truck.
The truck further desirably includes a mobile fax which enables the operator to fax a bill of lading at the end of each pickup to the processing or recycling center where the information on the fax is recorded for each pickup made by the truck so that, when the truck eventually arrives at the processing or recycling center with a full load of shredded tires, the center is already aware of the number of tires on the truck and the pounds of rubber on the truck generated by the shredded tires. To ensure against theft on the part of the driver, the truck desirably is weighed in as it arrives at the processing or recycling center to WO 94/25168 21 b 217 5 PCT/CA94/00250 ensure that all of the tires that have been loaded onto the truck are accounted for. The truck also desirably includes a mobile telephone to facilitate communication between the driver and the processing center so that the operator may follow either a preselected route of retail sales outlets or may receive directions for a new retail sales outlet after each pick up.
Preferably the shredder also includes an overload sensing device which, in the event of jamming of the shredder due to an overload condition or due to the inadvertent loading of foreign objects into the shredder, shuts down the'shredder, and also shuts down the conveyor assembly to preclude the delivery of more tires to the shredder until such time as the shredder has been cleared.
The floor 34f of the body structure preferably has a slight slope downwardly toward the front of the body structure so that water from the spray nozzle 152, as well as stagnant water collected in the tires, collects on the floor toward the front end of the body structure where it may be conveniently discharged, for example into a sewage drain, through a discharge drain opening 156.
Upon arrival of the truck at the recycling center, the tire shreds 145a are discharged from the truck and delivered to a processor 160 where the tire shreds are reduced to a rubber crumb material 162. This rubber crumb material 162 is in turn fed to a further processing apparatus 164 where the rubber crumb is mixed with recycled plastic material to form a resin compound of rubber and plastic in the form of pellets 166. The rubber/plastic resin compound pellets 166 provide a feed stock that has rnany applications in the production of commercial products.
For example, the pellets 166 may be used in the formation of asphalt pavement mixtures, in the formation of asphalt emulsion/sealants, or in the formation of asphalt roofing products.
Although the invention motor truck has been described in association with processing rubber motor vehicle tires, the invention motor truck has usefulness wherever it is desired to process any type of solid waste material. For example, the invention motor truck may be utilized to process plastic waste in the form of plastic bottles. In this application, the conveyor assembly 50 would be modified to specifically handle pickup and delivery of plastic bottles to the shredder 36. The handling of plastic bottles might be accomplished by the provision of a separate conveyor system on the roadside of the truck, opposite the conveyor system for picking up tires, which would operate to deliver plastic bottles to the shredder. Whereas the same motor truck might have a curbside conveyor system for handling rubber tires and a roadside conveyor system for handling plastic bottles, more typically the motor truck would have one conveyor system or the other.
The invention motor truck will be seen to have many important advantages. Specifically, the motor truck provides a viable alternative to the present system of disposing of rubber tires where the tires are typically collected from the retail sales sites and hauled to dump sites where they create an eyesore, a fire hazard, and an environmentally offensive condition. The present invention WO 94/25168 2 1 " ~ 1 ~ ~ PCT/CA94/00250 allows the scrap tires to be efficiently collected and taken to a recycling center where they are reduced to rubber crumb which may be further combined with scrap plastic to form a resin/plastic compound. The invention motor truck, and the invention methodology, thereby serve to simultaneously eliminate an environmental problem and simultaneously produce a commercially usable product.
Yet more specifically, the invention motor truck, by allowing the shredding of the scrap tires at each retail site, allows a given vehicle to collect a far greater amount of scrap rubber than is possible utilizing conventional trucks, thereby adding considerably to the efficiency of the collection process. The invention motor truck and methodology further provide a convenient and efficient means of collecting and processing any type of solid waste material.
Whereas a preferred embodiment of the invention = has been illustrated and described in detail, it will be apparent that various changes may be made in the disclosed embodiment without departing from the scope or spirit of the invention.
Backaround of the invention This invention relates to a mobile apparatus for mechanically shearing or shredding solid waste material such as rubber tires.
Disposal of solid waste materials represents a substantial ecological and economic problem. More particularly, scrap automobile tires present an especially vexing ecological and economic problem. Each year there are an estimated 280 million scrap tires discarded throughout North America. Unwanted scrap tire piles scattered throughout the countryside have been estimated to contain as many as 3 billion tires. Scrap tires' poor biodegradability, their tendency to trap gasses and rise to the surface in landfills, the serious fire hazard scrap tires represent, and the breeding environment that unwanted scrap tires offer to disease-carrying pests such as rodents and mosquitos have caused them to be- classified as a serious environmental nuisance.
The vast majority of used tires are generated at retail tire outlets where the used tires are removed from vehicles prior to installation of new tires.
Traditionally, the tires have been collected from the retail tire outlets by small independent truck operators who merely pick up the old tires, receive a fee for each tire collected, and deposit the old tires at municipal or private dump sites. Specifically, the tires are typically taken from the retailer in a stake truck, are then transferred from the stake truck into a transport trailer, and are then taken in the transport trailer to a tire dump site. This entire collection process, even if efficiently carried out, only exacerbates the existing environmental problem since the supply of festering tires at the dump sites continues to multiply and the availability of dump sites continues to dwindle. Further, the collection process itself is rather inefficient since it is not uncommon for individuals to collect tires from a retail outlet, receive a specified payment for each tire collected, but then never deliver the tires to an authorized dump site. Rather, the tires end up being dumped at the most convenient or closest location where they become an eyesore and further exacerbate the environmental problems associated with tire disposal.
Summary of the Invention This invention is directed to the provision of an improved apparatus and methodology for recycling used tires.
More specifically, this invention is directed to the provision of improved methodology and apparatus whereby the tires are efficiently collected from retail outlets and efficiently recycled.
The invention contemplates the provision of a 25 unique motor truck capable of being dispatched to retail tire outlets where used tires are collected on a regular basis, shredded on the site by a shredder carried on the vehicle, stored in shredded form in a storage container provided on the vehicle, and then, when the storage = - 3 -container is full, taken by the truck to a suitable processing or recycling facility.
According to an important feature of the invention, the truck comprises a chassis; a shredder mounted on the chassis; a storage chamber mounted on the chassis; and a compactor mounted on the chassis for stroking movement, positioned to receive the output of the shredder, and operative when stroked to move the shredded output into the storage chamber. This arrangement allows the tires or other waste material to be shredded at the retail site and stored in the vehicle so as to enable the vehicle to visit several'xretail sites and, when the storage chamber is full of the shredded material such as shredded tires, return to a recycling center to deliver the shredded material to the recycling center for use in producing a suitable compound for recycling purposes.
According to a further feature of the invention, the truck includes a body assembly mounted on the chassis and including a body structure defining the storage chamber; the shredder is mounted on the body structure; and the compactor is positioned within the body structure beneath the shredder and rearwardly of the storage chamber.
With this arrangement, the compactor receives the discharge of the shredder and operates when actuated to move the = 25 shredded discharge into the storage chamber so as to make room for further shredded product from the shredder.
According to a further feature of the invention, the truck further includes a conveyor assembly extending from a location proximate the support surface for the motor truck to a location proximate the entry to the shredder so WO 94/25168 ~ 1621 75 PCT/CA94/00250 - 4 - ~
that waste articles such as tires may be deposited on the conveyor assembly proximate the support surface and moved by the conveyor assembly to the shredder for shredding by the shredder and delivery to the compactor for movement into the storage chamber.
According to a further feature of the invention, the body structure includes a closure member at the rear end of the storage chamber operative when opened to allow the contents of the storage chamber to be discharged rearwardly out of the chamber and the compactor is operative when actuated with the closure member in an open position to discharge the contents of the storage chamber rearwardly out of the chamber through the open rear end of the body structure. This arrangement allows the compactor to serve both as a means of compacting the shredded material at each retail site as well as a means of ultimately ejecting all of the shredded material after the storage container has been filled and after the vehicle has been driven to a suitable recycling location.
According to a further feature of the invention, the truck includes a hydraulic pump driven by the engine of the truck and a hydraulic motor driving the shredder and receiving a supply of pressurized hydraulic fluid from the hydraulic pump. This arrangement allows the truck prime mover to provide the power for the shredder rather than =
requiring a separate power source on the vehicle to power the shredder.
According to a further feature of the invention, the truck further includes a further pump driven by the engine of the truck and a further hydraulic motor driving WO 94/25168 21" 21' 5 PCT/CA94/00250 = - 5 -the conveyor system and receiving a supply of pressurized hydraulic fluid from the conveyor pump. This arrangement allows the truck to perform both the pickup and the shredding of the waste material without the need for a = 5 separate power source on the vehicle.
The invention also provides a methodology for producing a rubber crumb material at a recycling center.
According to the invention methodology, vehicles are dispatched to retail sales locations for rubber tires; at each location a supply of used tires is collected, the tires are shredded, and the shredded tires are stored in the vehicles; and the vehicles, carrying the stored shredded tires, are thereafter returned to the recycling center where the shredded tires are discharged for reduction to rubber crumb material. This methodology provides a convenient means of addressing the ecological problems created by used tires and further provides a source of commercially usable rubber crumb material.
Brief Description of the Drawings FIGURE 1 is a perspective curbside view of a motor truck according to the invention;
FIGURE 2 is a perspective roadside view of the invention motor truck;
= FIGURE 3 is a side elevational view of the roadside of the invention motor truck;
FIGURE 4 is a cross-sectional view taken on line 4-4 of FIGURE 3;
FIGURE 5 is a diagrammatic plan view of the invention truck;
-6- =
FIGURES 6 and 7 are detail views of a conveyor system utilized in the invention truck;
FIGURE 8 is a detail view of a control panel provided on the invention motor truck;
FIGURE 9 is a schematic view illustrating the invention methodology; and FIGURE 10 is a perspective view of a cart utilized in carrying out the invention methodology.
Detailed Description of the Preferred Embodiment The invention motor truck, in overview, is designed to travel to a retail tire outlet, pick up a supply of used tires from the outlet, shred the tires on site, store the shredded tires in the truck, thereafter visit further retail tire outlets until the storage capacity of the truck has been exhausted and thereafter return to a recycling center where the shredded tire product is ejected from the truck for use in formulating, for example, a rubber crumb material for recycling applications.
The invention motor truck, broadly considered, includes a chassis 10, a body assembly 12, a hydraulic system 14, and a control system 16.
Chassis 10 is of known form and includes a cab 18, front wheels 20, rear wheels 22, a platform frame 24, an engine 26 of gasoline or diesel configuration, and a drive train 28 including a transmission 30.
Cab 18 may, as shown, be of the cab-over-engine type and may include a side entry door 32 and a windshield 33. Front wheels 20 are steerable and may, if desirec},, also be driven.
Rear,wt:eals 22 have a tandem aonfiguratior with either the front set bf wheels driven by tha drive train 28 or both front and rear sets of wheels driven by the drive train.
platform frame 24 isr of standard construction and includes parallel fra.ms rails extending rearwardly from the cab 3.s to a position rearwardly of tYie 7rear wheels. It lo arill be understood that the front and rear wheels are connected to the cab 18 and the rails 32 by suspension means, not a.lltistrated.
Body asaembly 12 includes a body structure 34, a shredder 36, a compactor 39, and a conveyor assembly 40.
Body structure 34 is supported in known manner on atiassis rails 32 rears.*ardly of cab 3.8 and defines a storaqe chamber 3s. Body struature 34 inaludes a forw3x'd top wall 34a, a reaxw$rd tvp wall 34b joined to the forward top wall 34a by a vertical wall 34c, side wa11s 34d and 34e, a bottom wall 34f, a front va11 34g, and a rear opening 34h alosed by a gate 42 wott.titad for pivotal movement about a hirnge axis 44. Walls 34a, 34b, 34c, 34d, 34s, and 34g have a flat configuratfon and hottom wall 34f has a downwardly bowed configurati.on. Gate 42 includes sS.de wa?.ls 42a and a bowed main body poztion 42b.
Shredder 36 is positioned on body stz-ucture top wall 34a and includes a rectangular box or bin 36a defin3.ng a bottom ctiecharge opening 36b aligned with an opening 34i in body etructure forward top wa1-.1 34a. Shredder 36 further includes a nydraulia motor 45 driving para].Ie2 .. g ~, shradder schafts 46 through a geaae mEchanism 47. Fach shaft carries a plurality of rotary shearing blades 48 hatirixig teeth 48a. The shafts are cdunter rotated so that the shearing blades 48 are also counter rotated as seen by the arrows in Figure 4. Box 36a defir3es an open top 36c so that material may be fed into the box from above for shredding by the counter rotating blades 48, Ska.x'gdder 36 may take various fozzs and may, for example, comprise a a shredder sold as Model No. 4428 by IMAC Corporation of Grand Prairie, Texas under the trade-mark'SATIIRN. Shredder 36 also desirably includes a lid 49 mounted on box 36a for move}xaent between the i],lustrated open position and a closed posxtion closing the apened top of the box 36a. The lid is moved between its open and closed positiprir. by a hydraulic cylinder 50 secured to'a side faca of box 36a.
Compactor 38 is pasitioned within body structure 34 and has a tranaveram cross-sectional configuration generally corresponding to the cross-sectional configuration of the body structure. 6pccifa.call.y, compactor 38 inc].udes a flat front wall 38a, a bowed bottom wall 38b corresponding in configuration to the.bowed bottom wall 34f of "t,txe body staructure; a top wall 38c: flat side wa13.s 38d mounted ior sliding engagement with body structure side walls 34d, 34e; and a rear surface including a flat low4br rear surface 38e and an arcuate upper rear auu-face 38f eactr.T-ding from the top edge of loweX surface 38e in au,rvilinear fashion to the rear edge ot the top wall 38c. Contpactor 3$c is movable linearly within body structure aa in stroking fashion by a hydraulic cylinder 48 positioned between the front wall 34g of the body structure - s -xLrid the compactor and havir-g a multiple cylinder telescop'ic configuration so that the cylinder tay expand to tnariy times its stotiaed configuratio.n so as to enable the cylinder to rRove the compactor from the extxexne forward position seen in solid lines in Figure 3 to the extreme rearward position, proscimat-$ the rear opening 34h of the body structure, seen in dash lines in Figure 3.
convoyor asse7ubly 40 is a thxee-part campound agsembly including a chain conveyor '=50, a split belt conveyor 52, and a tail conveyor 54_ Chain conveyor 5D includes a pair of rigidly a,xtterconrxected = beam members 56 rotationally supporting a sprocket 58 at their 2owex ends and a sprocket 61 at their upper ends, and a chain 60 trained around sprockets 58 and 61 artid including spaced hooks 62. Seaats 56 are pivoted to body structua~a 34 -at 63 and a hydraulic oylinder 64 positioned beneath the body struct.ure f,ncludes a piston rod 66 erigaging the lower end of, bearns 56 and opa7Cative when acttsated to inove the chain conveyor 50 from the stored dotted line position of Piqttre 4 p7rexirnate the side wall 34e of the body-.structure and an extended operative position, seen in solid lines in Figure 4, in which the lower end of the chain conveyor has beern pivQtsd outwardly about the pivot axis 62. Chain conveyor 50 Xs powered by a hydraulic motor 68 driving a shaft 70 which is drivingly aorsreectad to the upper sprooket 61.
Split belt conveyor 52 inalu.des a pair of rollers 72 drivingly mou.rnted on shaft 70 on opposite sides of chain cnnveyor 50, a pair of forward rollers 74 drivingly connected, to a drive shagt 76 jovtx-nalled at its opposite - 10 - ~
ends in side plates 78, and a pair of belts 80 trained around a respective pair of rollers 72, 74. Motor 68 is secured to the outboard face of one of the side plates 78 so that actuation of the motor upon receipt of a supply of pressurized hydraulic fluid powers chain conveyor 50 via sprocket 60 and powers split belt conveyor 52 via rollers 72.
Tail conveyor 54 includes a roller 82 drivingly secured to shaft 76, a free end roller 84 suitably connected to roller 82 by frame means (not shown) and a belt 86 trained around rollers 82 and 84. Tail conveyor 54 is also driven by hydraulic motor 68", via rollers 72, belts 80, rollers 74, shaft 76, and roller 82. A hydraulic cylinder 88 (shown diagrammatically in phantom in Figure 4) interconnects the upper end of chain conveyor 50 and an intermediate location on split belt conveyor 52 and a further hydraulic cylinder 90 (also shown diagrammatically in phantom in Figure 4) interconnects split belt conveyor 52 and tail conveyor 54.
Tail conveyor 54 is movable between a dash line stowed position seen in Figure 4 to the solid line operative position seen in Figure 4 by actuation of cylinder 64 to move the bottom of the chain conveyor outwardly; actuation of cylinder 88 to pivot twin belt conveyor 52 upwardly about the upper end of the chain conveyor; and actuation of cylinder 90 to pivot the tail conveyor 54 clockwise relative to the outboard end of the split belt 52. The combined action of the cylinders 64, 88, and 90 positions the lower end of the chain conveyor proximate the support surface 92 of the vehicle in spaced ~ - 11 -relation to the side wall of the vehicle and positions the delivery end 54a of =the tail conveyor 54 in overlying relation to the blades 48 of the shredder.
Hydraulic system 14 includes a main pump 94 positioned forwardly of the cab of the vehicle and driven directly from the crank shaft of engine 26; hydraulic motor 45 driving the shredder; a hydraulic reservoir or tank 96 positioned beneath the body structure of the vehicle; and a valve 97.
Hydraulic system 14 further includes a further pump 98 driven by the transmission 30 of the vehicle; the conveyor motor. 68; a reservoir or tank 100 positioned beneath the vehicle body structure; and a valve 102.
Control system 16 includes a control panel 104 positioned on the curb side of the truck forwardly of the conveyor assembly with a plurality of control buttons for controlling the various operations of the invention truck.
Specifically, control panel 104 includes a control button 122 controlling the opening of the lid 49; a control button 124 controlling the closing of the lid 49; a control button 126 controlling the extension of the conveyor assembly 50;
a control button 128 controlling the retraction of the conveyor assembly 50; a control button 129 controlling power to the conveyor assembly; a control button 130 = 25 constituting an ON/OFF switch for the shredder 36; a control button 132 controlling the extension of the compactor 38; a control button 134 controlling the retraction of the compactor 138; a control button 136 operative to open the rear door 42; a control button 138 operative to close the rear door 42; and an emergency system shutoff button 140.
Control button 122 is operative when actuated to apply pressurized fluid to hydraulic cylinder 50 in a sense to retract or open the lid 49; control button 124 is operative when actuated to actuate cylinder 50 in a sense to return the lid to a position closing the top of the shredder; control button 126 is operative when actuated to energize cylinders 64, 88, and 90 in a sense to move the conveyor system 50 from the retracted, stored dash line position of Figure 4 to the solid line extended or operative position of Figure 4 in which the discharge end 54a of tail conveyor 54 is positioned over the shredder blades 48; control button 128 is operative when actuated to energize cylinders 64, 88, and 90 in a sense to return the conveyor system to its stored dash line position of Figure 4; control button 129 is operative when actuated to control valve 102 in a sense to deliver pressurized fluid from pump 98 to motor 68 so as to power the conveyor assembly and is operative when again actuated to control valve 102 in a sense to direct pressurized fluid from motor 68 and route the pressurized fluid via a bypass line 143 directly to reservoir 100 so as to shut off power to the conveyor assembly; control button 130 is operative when actuated to control valve 97 in a sense to deliver pressurized fluid from pump 94 to motor 46 so as to power the shredder and is operative when again actuated to control valve 97 in a sense to divert pressurized fluid from motor 46 and route the pressurized fluid via a bypass line 142 directly to the reservoir 96 so as to shut off WO 94/25168 21 b 217 5 PCT/CA94/00250 ~ - 13 -power to the shredder; control button 132 is operative when actuated to energize cylinder 48 in a sense to extend the cylinder and stroke the compactor rearwardly toward the rear of the body structure; control button 132 is operative when actuated to energize the cylinder 148 in a sense to retract the cylinder and retract the compactor to its solid line position of Figure 3; control button 136 is operative when actuated to actuate a hydraulic cylinder 141 in a sense move the door 42 to an open position; control button 138 is operative when actuated to energize cylinder 141 in a sense to move the rear door 42 to a closed position; and control button=140 is operative when actuated to shut off all power to the system in the event of a jam or other emergency.
In operation, the truck is driven by the operator to a retail sales outlet for motor vehicle tires where the used tires, accumulated at the retail sales outlet since the last visit of the truck, are collected, shredded, and stored in the storage chamber.
A cart 144 may be utilized to facilitate the storage of the used tires 145 at the retail outlet and to facilitate the loading of the tires onto the conveyor system 50. Specifically, cart 144 may comprise a pair of partitions 144a, 144b arranged at right angles to each other and upstanding from the bed 144c of the cart to divide the cart into four areas on each of which a plurality of tires (for example, five) can be stacked.
Upon the arrival of the motor truck at the retail site, the truck is parked with the engine idling so as to continuously drive pumps 94 and 98; the cart 142 is wheeled to a location proximate the conveyor assembly 50; control button 122 is actuated to move the lid 49 to an open position; control button 126 is actuated to move the conveyor assembly 50 to its extended operative position;
control button 129 is actuated to deliver pressurized fluid from pump 98 to motor 68 to power the conveyor assembly;
control button 130 is actuated to deliver pressurized fluid from pump 94 to motor 45 to power the shredder; the vehicle operator places a tire 145 on each hook 62 as the chain conveyor 56 moves in the direction of the arrows in Figures 4 and 6; the tires 145 are carried upwardly by chain conveyor 56, picked up by split belt conveyor 52 for delivery to tail conveyor 54, and discharged by tail conveyor 54 into the open top 36c of the shredder box 36a;
and the tires falling downwardly into the open top of the shredder box 36a pass between the counter rotating shredder blades 48 where they are shredded by shredder blade teeth 48a to produce a plurality of tire shreds or fragments 145a which pass through aligned openings 36b and 34a for downward discharge into the storage chamber 35 defined by body structure 34 at a location above and immediately rearwardly of compactor 38.
After all of the tires 145 at the retail sales outlet have been loaded onto the conveyor system and shredded by the shredder, control button 130 is again =
actuated to divert pressurized fluid from hydraulic motor 45 and turn off the shredder whereafter control button 132 is actuated to energize hydraulic cyylinder 48 in a sense to extend the compactor 38 and move the tire shreds 144a rearwardly within storage chamber 35; control button 134 is ~ - 15 -actuated to energize the hydraulic cylinder 48 in a sense to retract the compactor and return the compactor to its solid line position seen in Figure 3; control button 124 is actuated to move the lid 49 to its closed position; control button 129 is actuated to shut off power to the conveyor assembly; and control button 128 is actuated to return the conveyor assembly to its stored position.
The truck is now ready to be driven to another retail tire sales outlet where more tires 145 will be shredded and moved into the storage chamber. This process is continued until the storage chamber has been filled with tire shreds, 'whereafter the truck will return to a recycling or processing facility where the shredded contents of the truck are discharged. Specifically, upon arrival at the processing or recycling facility, control button 136 is actuated to open the rear door; control button 132 is actuated to extend the compactor and move the compactor from the solid line position of Figure 3 to the dash line position of Figure 3 and discharge all of the shredded tire contents from the vehicle onto a suitable surface or into a suitable container; control button 134 is actuated to return the compactor to its solid line position of Figure 3; and control button 138 is actuated to return the rear door 42 to its closed position.
The truck is now ready to resume the task of picking up used tires at a prescheduled series of retail tire outlets until the storage chamber has again been filled with tire shreds whereafter the truck will again return to the processing or recycling center to discharge its shredded contents.
It will be understood that the extent to which compactor 38 is moved rearwardly upon actuation of control button 132 will depend upon the amount of tire shreds already in the storage chamber. Specifically, the hydraulic system supplying pressurized hydraulic fluid to cylinder 48 includes a pressure sensor which shuts off the delivery of pressurized fluid to the cylinder 48 after a predetermined hydraulic fluid pressure is sensed corresponding to a predetermined resistance being encountered by the rearwardly moving compactor. It will further be understood that the rearward stroke or movement of the compactor will be less and less as the storage chamber becomes more and more filled with tire shreds until a situation is reached in which literally no rearward movement of the compactor is possible because of the stored tire shreds. As a further precaution to guard against overloading the storage chamber and overstressing the compactor, a photoelectric eye 150 is provided in the body structure immediately beneath the discharge opening of the shredder. When the beam of the photoelectric eye 150 senses that the tire shreds have reached a level corresponding to the level of the beam, the beam disables the shredder and the compactor so as to preclude the delivery of further tire shreds to the storage chamber with consequent overloading of the compactor. The concave, curvilinear rearward surface 38e of the compactor has the effect of moving tire shreds rearwardly and simultaneously upwardly as the compactor moves rearwardly so as to ensure that the entire storage chamber 35 is filled with tire shreds.
WO 94/25168 2(6Z 1/5 PCT/CA94/00250 ~ - 17 -Shredder 36 also desirably further includes a spray nozzle 152 positioned to discharge water downwardly into the area between the counter rotating blades 48 as the blades are rotating to shred tires 145. The water from nozzle 152 has the effect of cooling and lubricating the tire shreds 145a. It will be understood that a water tank and water pump (not shown) will also be provided to provide a supply of pressurized water to the nozzle 152.
The truck further includes a further photoelectric eye 154 positioned on the conveyor assembly and operative to count each tire as the tire is loaded onto the truck. Fo'r example, and as best seen in Figure 6, a photoelectric eye 154 may be provided on split belt conveyor 52 where it senses the passage of=each tire 145 between the elements of the photoelectric eye. The passage of each tire is arranged to be digitally read out on a suitable instrument in the cab 18 of the truck and a record of each tire loaded onto the truck is entered into a suitable memory device positioned in the cab of the truck.
The truck further desirably includes a mobile fax which enables the operator to fax a bill of lading at the end of each pickup to the processing or recycling center where the information on the fax is recorded for each pickup made by the truck so that, when the truck eventually arrives at the processing or recycling center with a full load of shredded tires, the center is already aware of the number of tires on the truck and the pounds of rubber on the truck generated by the shredded tires. To ensure against theft on the part of the driver, the truck desirably is weighed in as it arrives at the processing or recycling center to WO 94/25168 21 b 217 5 PCT/CA94/00250 ensure that all of the tires that have been loaded onto the truck are accounted for. The truck also desirably includes a mobile telephone to facilitate communication between the driver and the processing center so that the operator may follow either a preselected route of retail sales outlets or may receive directions for a new retail sales outlet after each pick up.
Preferably the shredder also includes an overload sensing device which, in the event of jamming of the shredder due to an overload condition or due to the inadvertent loading of foreign objects into the shredder, shuts down the'shredder, and also shuts down the conveyor assembly to preclude the delivery of more tires to the shredder until such time as the shredder has been cleared.
The floor 34f of the body structure preferably has a slight slope downwardly toward the front of the body structure so that water from the spray nozzle 152, as well as stagnant water collected in the tires, collects on the floor toward the front end of the body structure where it may be conveniently discharged, for example into a sewage drain, through a discharge drain opening 156.
Upon arrival of the truck at the recycling center, the tire shreds 145a are discharged from the truck and delivered to a processor 160 where the tire shreds are reduced to a rubber crumb material 162. This rubber crumb material 162 is in turn fed to a further processing apparatus 164 where the rubber crumb is mixed with recycled plastic material to form a resin compound of rubber and plastic in the form of pellets 166. The rubber/plastic resin compound pellets 166 provide a feed stock that has rnany applications in the production of commercial products.
For example, the pellets 166 may be used in the formation of asphalt pavement mixtures, in the formation of asphalt emulsion/sealants, or in the formation of asphalt roofing products.
Although the invention motor truck has been described in association with processing rubber motor vehicle tires, the invention motor truck has usefulness wherever it is desired to process any type of solid waste material. For example, the invention motor truck may be utilized to process plastic waste in the form of plastic bottles. In this application, the conveyor assembly 50 would be modified to specifically handle pickup and delivery of plastic bottles to the shredder 36. The handling of plastic bottles might be accomplished by the provision of a separate conveyor system on the roadside of the truck, opposite the conveyor system for picking up tires, which would operate to deliver plastic bottles to the shredder. Whereas the same motor truck might have a curbside conveyor system for handling rubber tires and a roadside conveyor system for handling plastic bottles, more typically the motor truck would have one conveyor system or the other.
The invention motor truck will be seen to have many important advantages. Specifically, the motor truck provides a viable alternative to the present system of disposing of rubber tires where the tires are typically collected from the retail sales sites and hauled to dump sites where they create an eyesore, a fire hazard, and an environmentally offensive condition. The present invention WO 94/25168 2 1 " ~ 1 ~ ~ PCT/CA94/00250 allows the scrap tires to be efficiently collected and taken to a recycling center where they are reduced to rubber crumb which may be further combined with scrap plastic to form a resin/plastic compound. The invention motor truck, and the invention methodology, thereby serve to simultaneously eliminate an environmental problem and simultaneously produce a commercially usable product.
Yet more specifically, the invention motor truck, by allowing the shredding of the scrap tires at each retail site, allows a given vehicle to collect a far greater amount of scrap rubber than is possible utilizing conventional trucks, thereby adding considerably to the efficiency of the collection process. The invention motor truck and methodology further provide a convenient and efficient means of collecting and processing any type of solid waste material.
Whereas a preferred embodiment of the invention = has been illustrated and described in detail, it will be apparent that various changes may be made in the disclosed embodiment without departing from the scope or spirit of the invention.
Claims (20)
1 A mobile tire shredding apparatus comprising:
a motor truck including a chassis:
a body structure immovably mounted on the chassis and defining a storage chamber extending from a front wall of the body structure to an open rear end of the body structure;
a shredder mounted on the body structure in overlying relation to the forward end of the storage chamber;
a door closing the open rear end of the body structure and defining the rear end of the storage chamber;
a compactor positioned in the storage chamber beneath the shredder so as to receive the output of the shredder;
power means operative to move the compactor from a forward position beneath the shredder to a rearward position proximate the open rear end of the body structure;
and a conveyor assembly mounted on the truck and including a conveyor run defining a conveyor path extending from a loading location proximate the support surface of the truck to a discharge location proximate the open top of the shredder so that successive tires can be loaded onto the conveyor run at the loading location to move the tires successively up the conveyor path for successive discharge into the open top of the shredder, successive shredding by the shredder, and successive discharge downwardly into the storage chamber.
a motor truck including a chassis:
a body structure immovably mounted on the chassis and defining a storage chamber extending from a front wall of the body structure to an open rear end of the body structure;
a shredder mounted on the body structure in overlying relation to the forward end of the storage chamber;
a door closing the open rear end of the body structure and defining the rear end of the storage chamber;
a compactor positioned in the storage chamber beneath the shredder so as to receive the output of the shredder;
power means operative to move the compactor from a forward position beneath the shredder to a rearward position proximate the open rear end of the body structure;
and a conveyor assembly mounted on the truck and including a conveyor run defining a conveyor path extending from a loading location proximate the support surface of the truck to a discharge location proximate the open top of the shredder so that successive tires can be loaded onto the conveyor run at the loading location to move the tires successively up the conveyor path for successive discharge into the open top of the shredder, successive shredding by the shredder, and successive discharge downwardly into the storage chamber.
2. A mobile tire shredding apparatus according to claim 1 wherein:
the shredder opens upwardly and has a bottom discharge discharging into the storage chamber, and the conveyor assembly further includes a plurality of hook elements operative to enter into the open center area of used tires to facilitate the movement of the tires up the conveyor assembly and into the shredder for shredding.
the shredder opens upwardly and has a bottom discharge discharging into the storage chamber, and the conveyor assembly further includes a plurality of hook elements operative to enter into the open center area of used tires to facilitate the movement of the tires up the conveyor assembly and into the shredder for shredding.
3. A mobile tire shredding apparatus according to claim 2 wherein:
the conveyor assembly includes a first run extending generally vertically upwardly along one side of the body structure and including the hook elements and a second run extending generally horizontally to a location proximate the entry to the shredder.
the conveyor assembly includes a first run extending generally vertically upwardly along one side of the body structure and including the hook elements and a second run extending generally horizontally to a location proximate the entry to the shredder.
4. A mobile tire shredding apparatus according to claim 3 wherein:
the conveyor assembly is movable between a stored location in which the vertical run is positioned proximate the side face of the body structure and an operative position in which the vertical run is inclined with respect to the body structure.
the conveyor assembly is movable between a stored location in which the vertical run is positioned proximate the side face of the body structure and an operative position in which the vertical run is inclined with respect to the body structure.
5. A mobile tire shredding apparatus according to claim 1 wherein:
the chassis further includes an engine; and the truck further includes a hydraulic pump driven by the engine and a hydraulic motor driving the shredder and receiving pressurized fluid from the hydraulic pump.
the chassis further includes an engine; and the truck further includes a hydraulic pump driven by the engine and a hydraulic motor driving the shredder and receiving pressurized fluid from the hydraulic pump.
6. A mobile tire shredding apparatus according to claim 5 comprising:
the chassis further includes a cab; and the hydraulic pump is mounted forwardly of the cab.
the chassis further includes a cab; and the hydraulic pump is mounted forwardly of the cab.
7. A mobile tire shredding apparatus comprising:
a chassis; and a body assembly immovably mounted on the chassis and including a body structure defining a storage chamber extending from front to rear of the body structure with a substantially uniform cross-sectional configuration, a shredder mounted on the body structure and having an output arranged to discharge downwardly into the storage chamber, a compactor positioned in the storage chamber, extending over substantially the full height of the storage chamber, and mounted for movement between a forward position beneath the shredder to a rearward position proximate the rear end of the storage chamber; and a conveyor assembly mounted on the truck and including conveyor means defining a conveyor path extending from a loading location proximate the support surface of the truck to a discharge location proximate the open top of the shredder box and a plurality of spaced tire engaging members carried by the conveyor means so that successive tires can be engaged with successive tire engaging members at the loading location to move the tires successively up the conveyor path for successive discharge into the open top of the shredder box, successive shredding by the shredder, and successive discharge downwardly into the storage chamber.
a chassis; and a body assembly immovably mounted on the chassis and including a body structure defining a storage chamber extending from front to rear of the body structure with a substantially uniform cross-sectional configuration, a shredder mounted on the body structure and having an output arranged to discharge downwardly into the storage chamber, a compactor positioned in the storage chamber, extending over substantially the full height of the storage chamber, and mounted for movement between a forward position beneath the shredder to a rearward position proximate the rear end of the storage chamber; and a conveyor assembly mounted on the truck and including conveyor means defining a conveyor path extending from a loading location proximate the support surface of the truck to a discharge location proximate the open top of the shredder box and a plurality of spaced tire engaging members carried by the conveyor means so that successive tires can be engaged with successive tire engaging members at the loading location to move the tires successively up the conveyor path for successive discharge into the open top of the shredder box, successive shredding by the shredder, and successive discharge downwardly into the storage chamber.
8. A mobile tire shredding apparatus according to claim 7 wherein:
the conveyor assembly includes a vertical run; and the truck further includes means operative to move the vertical run between a stored position proximate the side of the body structure and an operative position in which the vertical run is inclined with respect to the side of the body structure.
the conveyor assembly includes a vertical run; and the truck further includes means operative to move the vertical run between a stored position proximate the side of the body structure and an operative position in which the vertical run is inclined with respect to the side of the body structure.
9. A mobile tire shredding apparatus according to claim 7 wherein: the chassis includes an engine; and the truck further includes a hydraulic pump driven by the engine and a hydraulic motor driving the shredder and receiving pressurized fluid from the hydraulic pump.
10. A mobile tire shredding apparatus comprising:
a truck including a chassis including a cab, front wheels, rear wheels, and a platform rigid with and extending rearwardly from the cab and extending over and supported by the rear wheels;
a body assembly immovably supported on the platform and including a shredder, a body structure defining a storage chamber positioned beneath the shredder so as to receive the output of the shredder and extending to an open rear end at the rear end of the body structure, a compactor positioned within the storage chamber, and power means operative to move the compactor from a forward position beneath the shredder to a rearward position proximate the open rear end of the storage chamber; and a conveyor assembly mounted on the truck and including conveyor means defining a conveyor path extending from a loading location proximate the support surface of the truck to a discharge location proximate the open top of the shredder box and a plurality of spaced tire engaging members carried by the conveyor means so that successive tires can be engaged with successive tire engaging members at the loading location to move the tires successively up the conveyor path for successive discharge into the open top of the shredder box, successive shredding by the shredder, and successive discharge downwardly into the storage chamber.
a truck including a chassis including a cab, front wheels, rear wheels, and a platform rigid with and extending rearwardly from the cab and extending over and supported by the rear wheels;
a body assembly immovably supported on the platform and including a shredder, a body structure defining a storage chamber positioned beneath the shredder so as to receive the output of the shredder and extending to an open rear end at the rear end of the body structure, a compactor positioned within the storage chamber, and power means operative to move the compactor from a forward position beneath the shredder to a rearward position proximate the open rear end of the storage chamber; and a conveyor assembly mounted on the truck and including conveyor means defining a conveyor path extending from a loading location proximate the support surface of the truck to a discharge location proximate the open top of the shredder box and a plurality of spaced tire engaging members carried by the conveyor means so that successive tires can be engaged with successive tire engaging members at the loading location to move the tires successively up the conveyor path for successive discharge into the open top of the shredder box, successive shredding by the shredder, and successive discharge downwardly into the storage chamber.
11. A mobile tire shredding apparatus according to claim 10 wherein:
the body assembly further includes a door at the open rear end of the storage chamber; and the compactor is operative with the door in an open position to discharge the contents of the storage chamber out of the rear end of the body structure.
the body assembly further includes a door at the open rear end of the storage chamber; and the compactor is operative with the door in an open position to discharge the contents of the storage chamber out of the rear end of the body structure.
12. A mobile tire shredding apparatus comprising:
a truck including a chassis including a cab, front wheels proximate the cab, and rear wheels positioned rearwardly of the cab; and a body assembly positioned rearwardly of the cab and including:
a body structure rigid with the cab, overlying the rear wheels, and defining a storage chamber extending without interruption and with a substantially uniform cross-sectional configuration from a front wall of the body structure rearwardly to an open rear end of the body structure;
a shredder positioned on top of the body structure and having an output arranged to discharge downwardly into the storage chamber;
a compactor positioned within the storage chamber below the shredder and forwardly of the rear end of the storage chamber, having a cross-sectional configuration substantially conforming to the cross-sectional configuration of the storage chamber, and mounted for rearward movement within the storage chamber; and a conveyor assembly mounted on the truck and including conveyor means defining a conveyor path extending from a loading location proximate the support surface of the truck to a discharge location proximate the open top of the shredder box and a plurality of spaced tire engaging members carried by the conveyor means so that successive tires can be engaged with successive tire engaging members at the loading location to move the tires successively up the conveyor path for successive discharge into the open top of the shredder box, successive shredding by the shredder, and successive discharge downwardly into the storage chamber.
a truck including a chassis including a cab, front wheels proximate the cab, and rear wheels positioned rearwardly of the cab; and a body assembly positioned rearwardly of the cab and including:
a body structure rigid with the cab, overlying the rear wheels, and defining a storage chamber extending without interruption and with a substantially uniform cross-sectional configuration from a front wall of the body structure rearwardly to an open rear end of the body structure;
a shredder positioned on top of the body structure and having an output arranged to discharge downwardly into the storage chamber;
a compactor positioned within the storage chamber below the shredder and forwardly of the rear end of the storage chamber, having a cross-sectional configuration substantially conforming to the cross-sectional configuration of the storage chamber, and mounted for rearward movement within the storage chamber; and a conveyor assembly mounted on the truck and including conveyor means defining a conveyor path extending from a loading location proximate the support surface of the truck to a discharge location proximate the open top of the shredder box and a plurality of spaced tire engaging members carried by the conveyor means so that successive tires can be engaged with successive tire engaging members at the loading location to move the tires successively up the conveyor path for successive discharge into the open top of the shredder box, successive shredding by the shredder, and successive discharge downwardly into the storage chamber.
13. A mobile tire shredding apparatus according to claim 12 wherein:
the body structure further includes a rear door at the rear of the storage chamber;
and the compactor is operative when actuated, and with the rear door open, to eject the contents of the storage chamber out of the rear end of the body structure through the open rear door.
the body structure further includes a rear door at the rear of the storage chamber;
and the compactor is operative when actuated, and with the rear door open, to eject the contents of the storage chamber out of the rear end of the body structure through the open rear door.
14. A mobile tire shredding apparatus according to claim 13 wherein:
the compactor is movable linearly within the body structure from a position beneath the shredder to a position proximate the rear door.
the compactor is movable linearly within the body structure from a position beneath the shredder to a position proximate the rear door.
15. A mobile tire shredding apparatus according to claim 12 wherein:
the compactor has an angled rear face with its forwardmost point proximate the upper end of the compactor and its rearwardmost point proximate the lower end of the compactor so as to impart an upward movement component to shredded material engaged by the shredder as the shredder moves rearwardly in the storage chamber.
the compactor has an angled rear face with its forwardmost point proximate the upper end of the compactor and its rearwardmost point proximate the lower end of the compactor so as to impart an upward movement component to shredded material engaged by the shredder as the shredder moves rearwardly in the storage chamber.
16. A mobile tire shredding apparatus according to claim 15 wherein:
the upwardly angled rear face of the compactor has a concave arcuate configuration.
the upwardly angled rear face of the compactor has a concave arcuate configuration.
17. A mobile tire shredding apparatus comprising:
a truck including a chassis including front wheels, a cab proximate the front wheels, an internal combustion engine proximate the front wheels, and rear wheels;
a body structure positioned rearwardly of the cab in overlying relation to the rear wheels and defining a storage chamber;
a shredder proximate the body structure and having an output arranged to discharge into the storage chamber;
a hydraulic motor driving the shredder;
a hydraulic shredder pump positioned forwardly of the cab, driven directly by the crankshaft of the engine, and operative to supply pressurized hydraulic fluid to the shredder hydraulic motor; and a conveyor assembly mounted on the truck and including a conveyor run defining a conveyor path extending from the loading location proximate the support surface of the truck to a discharge location proximate the open top of the shredder box so that successive tires can be loaded onto the conveyor run at the loading location to move the tires successively up the conveyor path for successive discharge into the open top of the shredder, successive shredding by the shredder, and successive discharge downwardly into the storage chamber.
a truck including a chassis including front wheels, a cab proximate the front wheels, an internal combustion engine proximate the front wheels, and rear wheels;
a body structure positioned rearwardly of the cab in overlying relation to the rear wheels and defining a storage chamber;
a shredder proximate the body structure and having an output arranged to discharge into the storage chamber;
a hydraulic motor driving the shredder;
a hydraulic shredder pump positioned forwardly of the cab, driven directly by the crankshaft of the engine, and operative to supply pressurized hydraulic fluid to the shredder hydraulic motor; and a conveyor assembly mounted on the truck and including a conveyor run defining a conveyor path extending from the loading location proximate the support surface of the truck to a discharge location proximate the open top of the shredder box so that successive tires can be loaded onto the conveyor run at the loading location to move the tires successively up the conveyor path for successive discharge into the open top of the shredder, successive shredding by the shredder, and successive discharge downwardly into the storage chamber.
18. A mobile tire shredding apparatus according to claim 17 wherein:
the shredder includes an upwardly opening entry, and the conveyor assembly further includes a hydraulic motor driving the conveyor assembly, and a hydraulic conveyor pump driven by the transmission of the truck and operative to supply pressurized hydraulic fluid to the conveyor hydraulic motor.
the shredder includes an upwardly opening entry, and the conveyor assembly further includes a hydraulic motor driving the conveyor assembly, and a hydraulic conveyor pump driven by the transmission of the truck and operative to supply pressurized hydraulic fluid to the conveyor hydraulic motor.
19. A mobile tire shredding apparatus comprising:
a truck including a chassis including a cab, front wheels proximate the cab, and rear wheels positioned rearwardly of the cab;
a body structure immovably secured to the chassis rearwardly of the cab in overlying relation to the rear wheels, defining a storage chamber extending without interruption from a front wall of the body structure rearwardly of the cab to the rear end of the storage chamber, and including a closure member at the rear end of the storage chamber;
a shredder mounted on the forward portion of the body structure in overlying relation to the storage chamber and having an output arranged to discharge downwardly into the storage chamber at a location forwardly of the rear end of the storage chamber;
a compactor positioned within the storage chamber beneath the output of the shredder and forwardly of the rear end of the storage chamber having a cross-sectional configuration approximating the cross-sectional configuration of the storage chamber and operative when stroked with the closure member in the closed position to move rearwardly within the storage chamber to compact the discharge of the shredder into the storage chamber and operative when stroked with the closure member in an open position to move rearwardly to a position proximate the closure member to eject the contents of the storage chamber out of the open rear end of the body structure; and a conveyor assembly mounted on the truck and including conveyor means defining a conveyor path extending from a loading location proximate the support surface of the chassis to a discharge location proximate the open top of the shredder and a plurality of spaced tire engaging members carried by the conveyor means so that successive tires can be engaged with successive tire engaging members at the loading location to move the tires successively up the conveyor path for successive discharge into the open top of the shredder, successive shredding by the shredder, and successive discharge downwardly into the storage chamber.
a truck including a chassis including a cab, front wheels proximate the cab, and rear wheels positioned rearwardly of the cab;
a body structure immovably secured to the chassis rearwardly of the cab in overlying relation to the rear wheels, defining a storage chamber extending without interruption from a front wall of the body structure rearwardly of the cab to the rear end of the storage chamber, and including a closure member at the rear end of the storage chamber;
a shredder mounted on the forward portion of the body structure in overlying relation to the storage chamber and having an output arranged to discharge downwardly into the storage chamber at a location forwardly of the rear end of the storage chamber;
a compactor positioned within the storage chamber beneath the output of the shredder and forwardly of the rear end of the storage chamber having a cross-sectional configuration approximating the cross-sectional configuration of the storage chamber and operative when stroked with the closure member in the closed position to move rearwardly within the storage chamber to compact the discharge of the shredder into the storage chamber and operative when stroked with the closure member in an open position to move rearwardly to a position proximate the closure member to eject the contents of the storage chamber out of the open rear end of the body structure; and a conveyor assembly mounted on the truck and including conveyor means defining a conveyor path extending from a loading location proximate the support surface of the chassis to a discharge location proximate the open top of the shredder and a plurality of spaced tire engaging members carried by the conveyor means so that successive tires can be engaged with successive tire engaging members at the loading location to move the tires successively up the conveyor path for successive discharge into the open top of the shredder, successive shredding by the shredder, and successive discharge downwardly into the storage chamber.
20. A mobile tire shredding apparatus according to claim 19 wherein:
the conveyor assembly includes a generally vertical run position along one side of the body structure and a generally horizontal run extending from the upper end of the vertical run to a position proximate the end of the shredder; and the truck further includes means operative to move the vertical run from a position proximate the side face of the body structure for storage purposes to an operative position inclined with respect to the side face of the body structure.
the conveyor assembly includes a generally vertical run position along one side of the body structure and a generally horizontal run extending from the upper end of the vertical run to a position proximate the end of the shredder; and the truck further includes means operative to move the vertical run from a position proximate the side face of the body structure for storage purposes to an operative position inclined with respect to the side face of the body structure.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/056,320 US5395061A (en) | 1993-05-03 | 1993-05-03 | Mobile tire shredder |
| US08/056,320 | 1993-05-03 | ||
| PCT/CA1994/000250 WO1994025168A1 (en) | 1993-05-03 | 1994-05-03 | Mobile tire shredder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2162175A1 CA2162175A1 (en) | 1994-11-10 |
| CA2162175C true CA2162175C (en) | 2007-07-10 |
Family
ID=38254905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2162175 Expired - Fee Related CA2162175C (en) | 1993-05-03 | 1994-05-03 | Mobile tire shredder |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2162175C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111409979A (en) * | 2020-04-28 | 2020-07-14 | 郭云美 | Garbage disposal device convenient for distinguishing garbage recovery in different states and implementation method |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111706327B (en) * | 2020-06-17 | 2022-11-15 | 安徽理工大学 | A device and control system for picking up and crushing leftover coal blocks for underground coal mining |
| FI130597B (en) * | 2020-12-17 | 2023-12-04 | Laatuinsinoeoerit Oy | A mobile recycling apparatus and a method of recycling |
-
1994
- 1994-05-03 CA CA 2162175 patent/CA2162175C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111409979A (en) * | 2020-04-28 | 2020-07-14 | 郭云美 | Garbage disposal device convenient for distinguishing garbage recovery in different states and implementation method |
| CN111409979B (en) * | 2020-04-28 | 2021-09-17 | 郭云美 | Garbage disposal device convenient for distinguishing garbage in different states and implementation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2162175A1 (en) | 1994-11-10 |
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| EEER | Examination request | ||
| MKLA | Lapsed |