EP0982240A1 - Locking arrangement in a refuse collection vehicle - Google Patents

Locking arrangement in a refuse collection vehicle Download PDF

Info

Publication number: EP0982240A1
Authority: EP; European Patent Office
Prior art keywords: locking; hood; tailgate; refuse; refuse container
Prior art date: 1998-08-28
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 Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Withdrawn

Application number

EP99850130A

Other languages

German (de)

English (en)

French (fr)

Inventor

Ulf Ottosson

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Norba AB

Original Assignee

Norba AB

Priority date (The priority date 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 date listed.)

1998-08-28

Filing date

1999-08-25

Publication date

2000-03-01

1999-08-25 Application filed by Norba AB filed Critical Norba AB

2000-03-01 Publication of EP0982240A1 publication Critical patent/EP0982240A1/en

Status Withdrawn legal-status Critical Current

Images

Classifications

- 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

Definitions

the present invention relates to an arrangement in a refuse collection vehicle according to the preamble of the appended claim 1.
the invention has its main application in connection with locking a tailgate against a refuse container of such a vehicle.
Refuse collection vehicles i.e. heavy duty lorries adapted for loading, discharge and transport of garbage and refuse, e.g. in the form of household refuse, are in common use.
today's refuse collection vehicles are normally designed with a load compartment in the form of a refuse container, defining an opening for loading and discharge of refuse.
today's refuse collection vehicles include a tailgate, pivotally suspended from an axle extending substantially across the longitudinal direction of the vehicle. This arrangement enables the tailgate to be closed against the refuse container, i.e. so as to close off said opening.
the tailgate is arranged so as to be opened and closed by means of appropriately designed power actuators, usually in the form of a number of hydraulic cylinders.
the patent document DE 35 21 276 A1 displays a refuse collection vehicle of the above type, comprising a refuse container and a tailgate being pivotally suspended in relation to the refuse container. Opening and closing of the tailgate is performed by means of hydraulic devices attached between the refuse container and the tailgate, on both sides of the vehicle. Each hydraulic device is furthermore attached to a rod that is movable, in a substantially vertical direction relative to the refuse container. The rod is used for locking the tailgate in its closed position, through being provided with a hook that, under influence of the cylinder device, may be displaced into engagement with a stud provided on the tailgate. In this manner a locking device is obtained, by means of which the tailgate can be secured to the opening defined by the refuse container.
a main object of the present invention is to solve the above-mentioned problem and to provide an improved locking device for a refuse collection vehicle and, more specifically, for the improved locking together of a tailgate and a refuse container of such a vehicle. This object is achieved by an arrangement, the characterising features of which are stated in claim 1.
the arrangement according to the invention is intended for load-carrying vehicles comprising a loading space defining an opening that can be closed off substantially completely by a hood, a power device for opening and closing the hood and a locking device arranged for sealed locking of the hood against said space.
the locking device comprises a substantially vertically arranged and displaceable element which is arranged in the loading space, and a locking clamp arranged in the hood, said power device being adapted to displace said element through said locking clamp when locking the hood.
Fig. 1 shows a somewhat simplified side view of an arrangement according to the present invention.
the device is especially intended for use in connection with a refuse collection vehicle 1, which is in a known manner provided with a refuse container 2 and a tailgate 3, arranged at the rear end of the vehicle 1.
the refuse container 2 thus defines an opening for loading and discharge of refuse, whereby said opening may be opened and closed by means of the tailgate 3.
Fig. 1 shows only the rear end of the vehicle 1 in question, it will be understood that the vehicle 1 in a known manner is constructed generally as a load-carrying vehicle powered by an internal combustion engine and comprising a chassis, a driver's cab, etc.
the tailgate 3 is arranged to be opened and closed in relation to the refuse container 2 by being pivotally suspended about a pivot axle 4, extending generally across the longitudinal direction of the vehicle 1.
the tailgate 3 can be operated towards its open or closed position by means of two hydraulic power devices, arranged on either side of the vehicle 1. Only one of the hydraulic devices 5 is shown in Fig. 1.
the vehicle is, in a known manner, provided with a (not shown) hydraulic pump, by means of which hydraulic oil can be fed to the hydraulic device 5 via (not shown) hydraulic piping.
the hydraulic device 5 shown in Fig. 1 comprises a rod 6, extendable from one end portion of the hydraulic device 5.
the rod 6 is pivotally suspended at a suspension point 7 located in the upper portion of the tailgate 3.
the opposite, lower end portion of the hydraulic device 5 is pivotally suspended by a short link arm 8 which is in tum pivotally suspended about a pivot axle 9 defined in a bracket 10.
This bracket 10 is in turn fixedly attached to the rear end of the refuse container 2.
said link arm 8 is furthermore pivotally suspended in an element which is displaceable in relation to the refuse container 2.
said element consists of a locking rod 11 which is substantially vertically arranged and displaceable a certain distance in a substantially vertical direction.
Fig. 1 shows the arrangement according to the invention in a first working position, in which the tailgate 3 is open and consequently the refuse container 2 is accessible for loading or discharging refuse. This corresponds to the locking rod 11 having assumed an upper end position and to the rod 6 being extended essentially completely out of the hydraulic device 5.
each hydraulic device 5 is operated (in a manner which is known per se and which is not described in detail here) so as to withdraw its rod 6 a certain amount.
This entails that the tailgate 3 is effected to pivot around its pivot axle 4 to finally arrive in a position to cover the opening defined by the refuse container 2.
the tailgate 3 is thus closed, however not locked.
Fig. 3 shows the tailgate 3 in substantially the same position as in Fig. 2, but with the important difference that it is also locked in relation to the refuse container 2.
Fig. 3 shows how the locking rod 11 can be actuated for achieving this locking of the tailgate 3.
each hydraulic device 5 is activated so as to withdraw its rod 6 a bit further in relation to what is shown in Fig. 2, preferably so as to withdraw it completely into the hydraulic device 5.
the link arm 8 will be pivoted somewhat around its pivot axle 9, the lower end portion of the hydraulic device 5 being raised from contact with the stop element 12. This also entails that the locking rod 11 is displaced a short distance downwards, more specifically so that its lower end portion extends into a separate locking element in the form of a locking clamp 13.
This locking clamp is affixed to the lower portion of the tailgate 3.
Fig. 4 which is a somewhat enlarged side view of the lower portion of the locking rod 11 and of the locking clamp 13, it can be seen how the locking rod 11 is extending down into an aperture 14 defined by the locking clamp 13 so as to bear with one side thereof on a support element, preferably consisting of a roller 15.
the roller 15 is in tum attached to the locking clamp 13 and is rotatingly arranged and extending substantially at right angles to the longitudinal direction of the locking rod 11.
the roller 15 is preferably made of steel and is attached in such a way that the tailgate 3 (when the locking rod 11 is brought to bear on the roller 15) is pulled towards the refuse container 2. In this way the tailgate 3 can be closed and secured.
the locking clamp 13 is attached so as to be displaceable along the lower part of the tailgate 3, more specifically in a substantially longitudinal direction of the vehicle 1.
the locking clamp 13 is designed with longitudinal slots 16, co-operating with fastening screws 17 for attachment to the tailgate 3.
an adjustment screw 18 is provided, which is fastened to the tailgate 3 by means of a bracket element 19.
the adjustment screw 18 is arranged so as to extend towards the locking clamp 13. Due to the fact that the adjustment screw 18 cooperates with a corresponding stop nut 20, i.e. by adjusting the position of the stop nut 20 on the adjustment screw 18, the locking clamp 13 can be set to a desired longitudinal position. In this way, the roller 15 can be adjusted very precisely in relation to the locking rod 11.
an adjustment mechanism is achieved, by means of which the locking rod 11 can be made to contact the roller 15 with a desired force, for sealingly locking the tailgate 3 against the refuse container 2.
the adjustment screw 18 will serve as a force-absorbing element for absorbing the forces acting on the locking clamp 13 when the tailgate 3 is locked against the refuse container 2.
the locking rod 11 and the locking clamp 13 combine to provide an adjustable locking device for sealingly locking the tailgate 3 against the refuse container 2.
a combined closing of the tailgate 3 and a locking thereof against the refuse container 2 is provided by activation of the respective hydraulic device 5.
the refuse container 2 is preferably provided with a sealing strip, suitably made of rubber or a similar material, extending around the opening defined by the refuse container 2.
the sealing strip extends along at least the lower and side edges of the opening.
a guiding element 21 is preferably provided for the locking rod 11.
the guiding element 21 is arranged as a guide surface for the locking rod 11 and is provided at the lower portion of the refuse container 2.
Figs. 1-3 only one locking device is shown, i.e. only one locking rod 11, one locking clamp 13, etc.
the vehicle in question is provided with two such arrangements, one at each side of the vehicle 1.
each hydraulic device 5 is initially activated so as to pull up the locking rod 11, i.e. pull it out of contact with the locking clamp 13. This leads to the lower portion of the hydraulic device 5 coming to rest against the stop element 12.
the stop element 12 defines a contact surface for the hydraulic device 5 defining the position where the tailgate 3 will begin to open, which is achieved by continued activation of the hydraulic device 5.
the tailgate 3 will eventually assume the position shown in Fig. 1, whereby the refuse compartment 2 is again accessible for loading and discharge of refuse.
the invention is not limited to the described embodiments, but may be varied within the scope of the appended patent claims.
the invention can be utilised in vehicles adapted for handling and transport of e.g. household refuse, recyclable material and environment-hazardous refuse, or for handling of other loads in a container which can be sealed.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Refuse-Collection Vehicles (AREA)

EP99850130A 1998-08-28 1999-08-25 Locking arrangement in a refuse collection vehicle Withdrawn EP0982240A1 (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
SE9802884		1998-08-28
SE9802884A SE512557C2 (sv)	1998-08-28	1998-08-28	Låsarrangemang vid sophämtningsfordon

Publications (1)

Publication Number	Publication Date
EP0982240A1 true EP0982240A1 (en)	2000-03-01

Family

ID=20412387

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP99850130A Withdrawn EP0982240A1 (en)	1998-08-28	1999-08-25	Locking arrangement in a refuse collection vehicle

Country Status (3)

Country	Link
EP (1)	EP0982240A1 (no)
NO (1)	NO994158L (no)
SE (1)	SE512557C2 (no)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2093902A (en) *	1980-12-16	1982-09-08	Allen Jack Motor Bodies Ltd	Tailgate locking means
DE3521276A1 (de)	1985-06-13	1986-12-18	Säkkiväline Oy, Helsinki-Tampere	Oeffnungs- und verschlussanordnung fuer die hinterpforte in muellwagen
DE3834163A1 (de) *	1988-10-07	1990-04-12	Schoerling Waggonbau	Verschlussvorrichtung fuer eine kehrmaschine
US5158340A (en) *	1991-09-05	1992-10-27	Mcneilus Truck And Manufacturing, Inc.	Tailgate mechanism for rear loading compactor

1998
- 1998-08-28 SE SE9802884A patent/SE512557C2/sv not_active IP Right Cessation
1999
- 1999-08-25 EP EP99850130A patent/EP0982240A1/en not_active Withdrawn
- 1999-08-27 NO NO994158A patent/NO994158L/no not_active Application Discontinuation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB2093902A (en) *	1980-12-16	1982-09-08	Allen Jack Motor Bodies Ltd	Tailgate locking means
DE3521276A1 (de)	1985-06-13	1986-12-18	Säkkiväline Oy, Helsinki-Tampere	Oeffnungs- und verschlussanordnung fuer die hinterpforte in muellwagen
DE3834163A1 (de) *	1988-10-07	1990-04-12	Schoerling Waggonbau	Verschlussvorrichtung fuer eine kehrmaschine
US5158340A (en) *	1991-09-05	1992-10-27	Mcneilus Truck And Manufacturing, Inc.	Tailgate mechanism for rear loading compactor

Also Published As

Publication number	Publication date
NO994158D0 (no)	1999-08-27
NO994158L (no)	2000-02-29
SE512557C2 (sv)	2000-04-03
SE9802884L (sv)	2000-02-29
SE9802884D0 (sv)	1998-08-28

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Legal Events

Date	Code	Title	Description
2000-01-14	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
2000-03-01	AK	Designated contracting states	Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
2000-03-01	AX	Request for extension of the european patent	Free format text: AL;LT;LV;MK;RO;SI
2000-10-25	17P	Request for examination filed	Effective date: 20000828
2000-11-15	AKX	Designation fees paid	Free format text: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
2001-10-10	17Q	First examination report despatched	Effective date: 20010827
2002-08-02	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN
2002-09-18	18D	Application deemed to be withdrawn	Effective date: 20020307