[go: up one dir, main page]

CN101462634A - Idler roller driving belt type conveyor - Google Patents

Idler roller driving belt type conveyor Download PDF

Info

Publication number
CN101462634A
CN101462634A CNA2008101909482A CN200810190948A CN101462634A CN 101462634 A CN101462634 A CN 101462634A CN A2008101909482 A CNA2008101909482 A CN A2008101909482A CN 200810190948 A CN200810190948 A CN 200810190948A CN 101462634 A CN101462634 A CN 101462634A
Authority
CN
China
Prior art keywords
carrying
roller
idler
drives
carrying roller
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.)
Pending
Application number
CNA2008101909482A
Other languages
Chinese (zh)
Inventor
张晓明
张岳松
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.)
Individual
Original Assignee
Individual
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.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CNA2008101909482A priority Critical patent/CN101462634A/en
Publication of CN101462634A publication Critical patent/CN101462634A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)

Abstract

The invention relates to a roller driving belt conveyer, which comprises reversing rollers, bearing rollers, bearing drive rollers, return rollers, return drive rollers, a conveying belt, a structural bearing and an electric control system. The belt conveyer adopts a plurality of bearing drive rollers to directly drive the conveying belt, designs the specification, the rotating speed and the number of the required bearing drive rollers according to the carrying capacity requirement of the belt conveyer, determines whether the return rollers are required to be provided with the return drive rollers according to the design requirement of the longitudinal tension of the conveying belt, determines the number of the return drive rollers according to the design requirement of the longitudinal tension of the conveying belt, connects all the bearing drive rollers 1 and all the return drive rollers in series, and uses the electric control system to control and complete synchronized motion. The roller driving belt conveyer has the advantages of simple structure, reduction of a tension device, large reduction of the tension of the conveying belt and the cost, stable operation, long service life and so on.

Description

Idler roller driving belt type conveyor
Technical field
The present invention relates to a kind of belt conveyer, be used for fields such as metallurgy, coal, traffic, electric power, building materials, chemical industry, light industry, grain, machinery and storage, particularly a kind of belt conveyer that adopts carrying roller to drive.
Background technology
Belt conveyer is to be used for equipment to various bulk cargos and member article delivery, generally by driving drum, the changed course cylinder, carrying idler, return idler, load-transfer device, structure support and electric control system are formed, drive controlling is mainly driven by driving drum, generally have singly and drive, two drive or three drive cylinder realize the starting, operation, stop functions such as (containing sudden stop), the work characteristics of its driver train is: electrical motor connects reductor and (comprises drg, holdback) drives driving drum, under the conduction traction of load-transfer device, having carrying idler, return idler, move on the structure support of changed course cylinder.Generally be that every resistance that driving drum frictionally under the effect of certain belt tension and cornerite overcomes conveyer moves, this kind type of drive needs load-transfer device to have tightening device, and load-transfer device should have very big longitudinal tensile strength, makes that there is complex structure in belt conveyer, volume is big, weight is high, load-transfer device cost height, shortcoming that maintenance rate is high.
Summary of the invention
In order to solve the problem that prior art exists, the purpose of this invention is to provide a kind of idler roller driving belt type conveyor, this belt conveyer adopts carrying idler to drive, and makes carrying idler directly drive belt conveyer and starts, moves, stops to realize its every function; Have simple in structurely, reduce tightening device, reduce belt tension and cost greatly, operate steadily advantages such as long service life.
For achieving the above object, the present invention is achieved through the following technical solutions:
Idler roller driving belt type conveyor, comprise changed course cylinder, carrying idler, return idler, load-transfer device, structure support, electric control system, it is characterized in that, this belt conveyer adopts a plurality of carrying idler direct drive load-transfer devices, requires specification, rotating speed and the quantity of design driving carrying roller according to the carrying capacity of belt conveyer; A plurality of carryings drive carrying rollers and carry out synchro control by an electric control system, finish belt conveyer starting, move and stop.
Described belt conveyer is according to the designing requirement of load-transfer device longitudinal tension force, determine whether return idler needs to be provided with backhaul and drive carrying roller, the quantity that backhaul drives carrying roller according to the load-transfer device longitudinal tension force designing requirement decide, and all carryings are driven carrying rollers be together in series with backhaul driving carrying roller, control to finish by an electric control system and be synchronized with the movement.
Described belt conveyer is divided into the level transportation, makes progress and transport and transport three kinds of modes downwards according to the difference of discharge way.
Described carrying drives the form that carrying roller adopts the driven in parallel carrying roller, and actuating device drives carrying driving carrying roller and rotates on support around bolster, and a plurality of driving carrying rollers and load-transfer device are realized the work running of belt conveyer by the friction force transmission.
Described carrying drives the form that carrying roller adopts the groove profile carrier roller parallel rollers to drive, and the cross roll of parallel rollers and both sides is formed groove profile carrier roller, is connected with support by bolster, and actuating device drives parallel rollers and rotates, and cross roll is driven, realizes the work running of belt conveyer.
Described carrying drives the form that carrying roller adopts groove profile carrier roller parallel rollers cross roll to drive, the cross roll of parallel rollers and both sides is formed groove profile carrier roller, be connected with support by bolster, actuating device drives parallel rollers and cross roll rotates, and realizes the work running of belt conveyer.
Described carrying drives carrying roller and adopts the V-type cross roll to drive the form of carrying roller, two cross rolls are connected with support by bolster, form the V-type carrying roller, two cross rolls of actuating device driven in synchronism rotate on support around bolster, cross roll is realized the work running of belt conveyer by the motion of frictional force drives load-transfer device.
Described carrying drives carrying roller and adopts permasyn motor direct to connect the mode of driving, permasyn morot is designed and is assembled into permasyn morot drive carrying roller according to belt conveyer parameter needs.
Described permasyn morot drives carrying roller can be assembled into the form that driven in parallel carrying roller, the driving of groove profile carrier roller parallel rollers, the driving of groove profile carrier roller parallel rollers cross roll or V-type cross roll drive carrying roller.
Variable-frequency governor is adopted in described idler roller driving belt type conveyor operation speed governing, by PLC programmable control system or PC control.
The structural principle that this belt conveyer adopts carrying idler to drive makes carrying idler directly drive belt conveyer and starts, moves, stops to realize its every function; Long at one way belt conveyer fed distance, backhaul conveying belt length, the characteristics that tension force is big, longitudinal tension force for the balance load-transfer device, reduce the load-transfer device cost, according to the designing requirement of load-transfer device longitudinal tension force, the backhaul that meets the demands in return idler design drives the quantity of carrying roller, and more than carrying drives carrying roller and backhaul drives carrying roller by an electrical control subsystem controls, synchronized operation.With this drive form that substitutes traditional belt conveyer, it has, and cost of investment is low, driving efficiency is high, simple in structure, volume is little, in light weight, easy care is with maintenance, saving electric energy and improve the characteristics in service life greatly.
Compared with prior art, the invention has the beneficial effects as follows:
1, adopt idler roller driving belt type conveyor fundamentally to cancel tightening device or significantly reduce tensile force;
2, adopt the longitudinal stress of idler roller driving belt type conveyor load-transfer device to significantly reduce, reduced the manufacturing cost of load-transfer device, improved the service life of belt conveyor simultaneously;
3, adopt idler roller driving belt type conveyor fundamentally to reduce the actuating device power consumption, and can adopt the variable frequency control saves energy;
4, adopt idler roller driving belt type conveyor to reduce the carrying structure weight and the usage space of belt conveyer greatly;
5, operate steadily, it is low to wear and tear, and the life-span is long, is beneficial to maintenance, reduces cost of investment greatly;
6, be convenient to using equipment rehabilitation.
Description of drawings
Fig. 1 is the overall construction drawing of idler roller driving belt type conveyor;
Fig. 2 is a level transportation idler roller driving belt type conveyor structural representation;
Fig. 3 upwards transports the idler roller driving belt type conveyor structural representation;
Fig. 4 transports the idler roller driving belt type conveyor structural representation downwards;
Fig. 5 is a driven in parallel idler structure scheme drawing;
Fig. 6 is that the flute profile parallel rollers drives the idler structure scheme drawing;
Fig. 7 is that the flat cross roll of flute profile drives the idler structure scheme drawing;
Fig. 8 is that the V-arrangement cross roll drives the idler structure scheme drawing;
Fig. 9 is that permanent magnet motor drives the idler structure scheme drawing.
Among the figure: the 1-carrying drives carrying roller 2-carrying idler 3-return idler 4-load-transfer device 5-changed course cylinder 6-backhaul and drives carrying roller
The specific embodiment
See Fig. 1, idler roller driving belt type conveyor, comprise that changed course cylinder 5, carrying idler 2, carrying drive carrying roller 1, return idler 3, backhaul driving carrying roller 6, load-transfer device 4, structure support, electric control system, this belt conveyer adopts a plurality of carryings to drive carrying roller 1 direct drive load-transfer device, requires specification, rotating speed and the quantity of design carrying driving carrying roller according to the carrying capacity of belt conveyer; Belt conveyer is according to the designing requirement of load-transfer device longitudinal tension force, determine whether return idler needs to be provided with backhaul and drive carrying roller, its quantity according to the load-transfer device longitudinal tension force designing requirement decide, and all carryings are driven carrying rollers 1 drive carrying roller 6 with backhaul and be together in series, control to finish by an electric control system and be synchronized with the movement.
Idler roller driving belt type conveyor, difference according to discharge way, the belt conveyer that be divided into level (Fig. 2), make progress (Fig. 3), downward (Fig. 4) transports, according to the form difference that drives carrying roller, be divided into the driven in parallel carrying roller and drive (Fig. 5), flute profile carrying roller parallel rollers driving (Fig. 6), flute profile carrying roller parallel rollers cross roll driving (Fig. 7), V-arrangement cross roll driving (Fig. 8), changed the type of drive of traditional driving drum under the conveyer stretcher effect, the specific embodiment is described below:
Idler roller driving belt type conveyor, this belt conveyer adopts the type of drive of one or more carrying idler direct drive load-transfer devices, and require design driven carrying roller pattern according to the carrying capacity of multi-form belt conveyer, scantling of structure, the quantity and the specification of running velocity and driving carrying roller, driving under the prerequisite of requirement that carrying roller satisfies horsepower output, optimize the carrying structure that drives carrying roller quantity and specification and load-transfer device, reduce equipment cost and power consumption, according to designing requirement a plurality of carryings are driven carrying roller and equally spaced be distributed on the whole belt conveyer, and synchro control realizes on same control system.
Control system can adopt variable-frequency governor, also can be equipped with the control of PLC Programmable Logic Controller or PC, thereby guarantees that each carrying drives carrying roller and backhaul drives carrying roller synchronized operation, and cuts down the consumption of energy, and fault detection realizes automatic management.
Following mask body is introduced the working process of carrying roller belt conveyer and the mechanism form of carrying idler.
(1) idler roller driving belt type conveyor according to the difference of discharge way, is divided into level (Fig. 2), upwards (Fig. 3), the transport structure form of (Fig. 4) downwards, and its principle of work is identical, and existing belt conveyer with the level transportation is that example is introduced:
See Fig. 1, a plurality of carryings drive carrying roller 1 starting under same control system control, drive load-transfer device 4 and move around two changed course cylinders 5 on carrying idler 2 and return idler 3 and backhaul driving carrying roller 6, backhaul drives the effect of carrying roller assistive drive, the work of realization belt conveyer.
(2) carrying drives the structural shape of carrying roller:
1, driven in parallel carrying roller
See Fig. 5, driving parallel carrying driving carrying roller 1 at motor (or oil pump) with corresponding machinery (or hydraulic pressure) type of drive rotates on support 8 around bolster 7, a plurality of then parallel carryings that be arranged in parallel drive carrying roller 1 and pass through the friction force transmission with load-transfer device 4, realize the work running of belt conveyer.Backhaul driven in parallel idler structure is consistent with it, and quantity is decided according to the design of load-transfer device longitudinal tension force.
2, flute profile carrying roller parallel rollers drives
See Fig. 6, parallel carrying drives carrying roller 1 and connects with support 8 by bolster 10 with two cross rolls 9, form the flute profile carrying roller, rotate on support 8 around bolster 10 with the parallel carrying driven roller holder 1 that corresponding machinery (or hydraulic pressure) type of drive drives the flute profile carrying roller at motor (or oil pump), a plurality of parallel carryings drive carrying roller 1 by 4 motions of frictional force drives load-transfer device, and cross roll 9 is driven around bolster 10.Thereby realize the work running of belt conveyer.The changed course cylinder of this type of belt conveyer can be made and top consistent flute profile, and return idler can be made and top opposite flute profile, and load-transfer device 4 is also made flute profile.Effectively improve the life-span of conveyer machinery driving efficiency and load-transfer device.It is consistent with it that backhaul drives idler structure, and vertical transmission designs and decides quantity according to load-transfer device.
3, flute profile carrying roller parallel rollers cross roll drives
See Fig. 7, parallel carrying drives carrying roller 1 and connects with support 8 by bolster 10 with two cross rolls 9, form the flute profile carrying roller, rotate on support 8 around bolster 10 with parallel carrying driving carrying roller 1 and two cross rolls 9 that corresponding machinery (or hydraulic pressure) type of drive drives the flute profile carrying roller simultaneously at motor (or oil pump), a plurality of parallel carryings drive carrying roller 1 and cross roll 9 moves by frictional force drives load-transfer device 4, thereby realize the work running of belt conveyer.The changed course cylinder of this type of belt conveyer can be made and top consistent flute profile, and return idler can be made and top opposite flute profile, and load-transfer device 4 is also made flute profile.Effectively improve the life-span of conveyer machinery driving efficiency and load-transfer device.It is consistent with it that backhaul drives idler structure, and vertical transmission designs and decides quantity according to load-transfer device.
4, the V-arrangement cross roll drives
See Fig. 8, two cross rolls 9 connect with support 8 by bolster 10, form the V-arrangement carrying roller, rotate on support 8 around bolster 10 with two cross rolls of corresponding machinery (or hydraulic pressure) type of drive driven in synchronism 9 at motor (or oil pump), cross roll 9 is by 4 motions of frictional force drives load-transfer device, thereby the work that realizes belt conveyer is turned round.The changed course cylinder of this type of belt conveyer can be made and top consistent V-arrangement, and return idler can be made and top opposite V-arrangement, and load-transfer device 4 is also done forming V-shape.Effectively improve the life-span of conveyer machinery driving efficiency and load-transfer device.It is consistent with it that backhaul drives idler structure, and vertical transmission designs and decides quantity according to load-transfer device.
(3) permasyn morot drives the carrying roller system
See Fig. 9, the carrying of idler roller driving belt type conveyor drives the structural principle that carrying roller adopts permasyn morot, makes the permasyn motor direct tipping be made into the driving carrying roller of idler roller driving belt type conveyor.According to driving needed design speed of carrying roller and output torque, the design permagnetic synchronous motor also is assembled into the driving carrying roller.Permasyn morot drives the annexation of carrying roller and drives idler structure.
(1), permanent-magnet synchronous motor rotor 11 is fixedly connected with bolster 12 and support 8, driving carrying driving carrying roller 1 (being that the permasyn morot stator is assembled) rotates around bolster 12 under the driving of electric power, thereby realize that the belt conveyer carrying idler drives, and form idler roller driving belt type conveyor.
(2), permasyn morot drives carrying roller and can be assembled into above-mentioned driven in parallel carrying roller, flute profile equality roller driving carrying roller, the idler roller driving belt type conveyor of flat cross roll driving carrying roller of flute profile and V-arrangement cross roll driving carrying roller counter sample pattern.

Claims (10)

1, idler roller driving belt type conveyor, it is characterized in that, comprise changed course cylinder, carrying idler, return idler, load-transfer device, structure support, electric control system, it is characterized in that, this belt conveyer adopts a plurality of carrying idler direct drive load-transfer devices, requires specification, rotating speed and the quantity of design driving carrying roller according to the carrying capacity of belt conveyer; A plurality of carryings drive carrying rollers and carry out synchro control by an electric control system, finish belt conveyer starting, move and stop.
2, idler roller driving belt type conveyor according to claim 1, it is characterized in that, described belt conveyer is according to the designing requirement of load-transfer device longitudinal tension force, determine whether return idler needs to be provided with backhaul and drive carrying roller, the quantity that backhaul drives carrying roller according to the load-transfer device longitudinal tension force designing requirement decide, and all carryings are driven carrying rollers be together in series with backhaul driving carrying roller, control to finish by an electric control system and be synchronized with the movement.
3, idler roller driving belt type conveyor according to claim 1 is characterized in that, described belt conveyer is divided into the level transportation, makes progress and transport and transport three kinds of modes downwards according to the difference of discharge way.
4, idler roller driving belt type conveyor according to claim 1, it is characterized in that, described carrying drives the form that carrying roller adopts the driven in parallel carrying roller, actuating device drives carrying driving carrying roller and rotates on support around bolster, a plurality of driving carrying rollers and load-transfer device are realized the work running of belt conveyer by the friction force transmission.
5, idler roller driving belt type conveyor according to claim 1, it is characterized in that, described carrying drives the form that carrying roller adopts the groove profile carrier roller parallel rollers to drive, the cross roll of parallel rollers and both sides is formed groove profile carrier roller, be connected with support by bolster, actuating device drives parallel rollers and rotates, and cross roll is driven, realizes the work running of belt conveyer.
6, idler roller driving belt type conveyor according to claim 1, it is characterized in that, described carrying drives the form that carrying roller adopts groove profile carrier roller parallel rollers cross roll to drive, the cross roll of parallel rollers and both sides is formed groove profile carrier roller, be connected with support by bolster, actuating device drives parallel rollers and cross roll rotates, and realizes the work running of belt conveyer.
7, idler roller driving belt type conveyor according to claim 1, it is characterized in that, described carrying drives carrying roller and adopts the V-type cross roll to drive the form of carrying roller, two cross rolls are connected with support by bolster, form the V-type carrying roller, two cross rolls of actuating device driven in synchronism rotate on support around bolster, and cross roll is realized the work running of belt conveyer by the motion of frictional force drives load-transfer device.
8, idler roller driving belt type conveyor according to claim 1, it is characterized in that, described carrying drives carrying roller and adopts permasyn motor direct to connect the mode of driving, permasyn morot is designed and is assembled into permasyn morot drive carrying roller according to belt conveyer parameter needs.
9, idler roller driving belt type conveyor according to claim 1, it is characterized in that described permasyn morot drives carrying roller can be assembled into the form that driven in parallel carrying roller, the driving of groove profile carrier roller parallel rollers, the driving of groove profile carrier roller parallel rollers cross roll or V-type cross roll drive carrying roller.
10, idler roller driving belt type conveyor according to claim 1 is characterized in that, variable-frequency governor is adopted in described idler roller driving belt type conveyor operation speed governing, by PLC programmable control system or PC control.
CNA2008101909482A 2008-12-31 2008-12-31 Idler roller driving belt type conveyor Pending CN101462634A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNA2008101909482A CN101462634A (en) 2008-12-31 2008-12-31 Idler roller driving belt type conveyor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNA2008101909482A CN101462634A (en) 2008-12-31 2008-12-31 Idler roller driving belt type conveyor

Publications (1)

Publication Number Publication Date
CN101462634A true CN101462634A (en) 2009-06-24

Family

ID=40803469

Family Applications (1)

Application Number Title Priority Date Filing Date
CNA2008101909482A Pending CN101462634A (en) 2008-12-31 2008-12-31 Idler roller driving belt type conveyor

Country Status (1)

Country Link
CN (1) CN101462634A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102218675A (en) * 2010-04-14 2011-10-19 豪迈木加工系统股份公司 Device for transporting workpieces
CN102602669A (en) * 2011-12-20 2012-07-25 李慧 Driving device of permanent-magnet frequency-conversion belt conveyer
CN102719947A (en) * 2012-06-27 2012-10-10 广东溢达纺织有限公司 Automatic doffing machine
WO2016109912A1 (en) * 2015-01-06 2016-07-14 北京雨润华科技开发有限公司 Multi-power rubber belt conveyor
CN108045851A (en) * 2017-12-12 2018-05-18 力博重工科技股份有限公司 A kind of link friction plays braking ribbon conveyer and its control method
CN108674895A (en) * 2018-04-27 2018-10-19 广船国际有限公司 A kind of crawler type transport system
CN109399125A (en) * 2018-10-10 2019-03-01 南安市天筹机械贸易有限公司 A kind of conveyer belt overload warning device based on electric current induction and air thermal expansion
CN110421624A (en) * 2019-06-18 2019-11-08 广州创速自动化科技有限公司 A kind of cutting machine conveyer belt circulatory system
CN113443358A (en) * 2021-08-30 2021-09-28 中国大唐集团科技工程有限公司 Ultra-long distance tubular belt conveyor
CN114084703A (en) * 2021-12-25 2022-02-25 枣庄市东博矿山机械设备有限公司 Powder tiling cloth machine for marble processing
CN115520598A (en) * 2022-08-11 2022-12-27 江苏安疆装备有限公司 Heavy-duty conveyor for mining

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102218675A (en) * 2010-04-14 2011-10-19 豪迈木加工系统股份公司 Device for transporting workpieces
CN102218675B (en) * 2010-04-14 2015-12-02 豪迈木加工系统股份公司 For the device of conveying workpieces
CN102602669A (en) * 2011-12-20 2012-07-25 李慧 Driving device of permanent-magnet frequency-conversion belt conveyer
CN102719947A (en) * 2012-06-27 2012-10-10 广东溢达纺织有限公司 Automatic doffing machine
WO2016109912A1 (en) * 2015-01-06 2016-07-14 北京雨润华科技开发有限公司 Multi-power rubber belt conveyor
CN108045851A (en) * 2017-12-12 2018-05-18 力博重工科技股份有限公司 A kind of link friction plays braking ribbon conveyer and its control method
CN108674895A (en) * 2018-04-27 2018-10-19 广船国际有限公司 A kind of crawler type transport system
CN109399125A (en) * 2018-10-10 2019-03-01 南安市天筹机械贸易有限公司 A kind of conveyer belt overload warning device based on electric current induction and air thermal expansion
CN109399125B (en) * 2018-10-10 2020-06-26 江门市南方输送机械工程有限公司 Conveyer belt overload warning device based on current induction and air thermal expansion
CN110421624A (en) * 2019-06-18 2019-11-08 广州创速自动化科技有限公司 A kind of cutting machine conveyer belt circulatory system
CN113443358A (en) * 2021-08-30 2021-09-28 中国大唐集团科技工程有限公司 Ultra-long distance tubular belt conveyor
CN114084703A (en) * 2021-12-25 2022-02-25 枣庄市东博矿山机械设备有限公司 Powder tiling cloth machine for marble processing
CN115520598A (en) * 2022-08-11 2022-12-27 江苏安疆装备有限公司 Heavy-duty conveyor for mining

Similar Documents

Publication Publication Date Title
CN101462634A (en) Idler roller driving belt type conveyor
CN109650287A (en) A kind of RGV and working method with laterally longitudinal shifting carrying platform
CN202743943U (en) Intelligent control device for belt conveyor for mine
CN101786581B (en) Synchronous driving multipoint suspension vertical lifting platform
CN101775972A (en) Multiple-power reducing tower shelf type oil pumping machine
CN202784591U (en) Horizontal scraper machine
CN102001513A (en) Tension device for belt conveyor
CN103979251A (en) Magnetic levitation synchronous belt conveyor
CN200958010Y (en) Lifting structure of hoist
CN101975044B (en) Mechanical reversing and variable-diameter tower frame type pumping unit
CN203921824U (en) Magnetic suspension Timing Belt conveyer
CN209202110U (en) Transportation system is used in a kind of drying of hawthorn
CN201367234Y (en) Carrier roller-driven belt conveyor
CN201280334Y (en) Rubber belt conveyor
CN201746074U (en) Redirection belt pressing roller for wave side wall conveyor
CN101021152B (en) Damping feed machine
CN105197616B (en) A kind of Coal Stack Yard reversible moving overhead traveling crane material stocking device
CN104401862B (en) Energy-saving device for escalator
CN201610746U (en) Boosting variable-diameter derrick pumping unit
CN102979486B (en) A kind of power transfers formula pylon oil pumper
CN202215211U (en) Drum tower frame type oil pumping unit
CN202575437U (en) Multipurpose conveying device for loading and unloading
CN201810283U (en) Mechanical reversing and reducing tower type oil pumping unit
CN102807068A (en) Large-tilt-angle upward-transporting gangue belt conveyor
CN203268840U (en) Feeding mechanism of feeding type screening machine

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20090624