CN203655739U - Pulling-arm type self loading and unloading device and garbage truck with detachable compartment provided therewith - Google Patents

Pulling-arm type self loading and unloading device and garbage truck with detachable compartment provided therewith Download PDF

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Publication number
CN203655739U
CN203655739U CN201420001539.4U CN201420001539U CN203655739U CN 203655739 U CN203655739 U CN 203655739U CN 201420001539 U CN201420001539 U CN 201420001539U CN 203655739 U CN203655739 U CN 203655739U
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China
Prior art keywords
oil
valve
unloading device
main reversing
loading
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Expired - Lifetime
Application number
CN201420001539.4U
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Chinese (zh)
Inventor
谭清江
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Zoomlion Heavy Industry Science and Technology Co Ltd
Changsha Zoomlion Environmental Industry Co Ltd
Original Assignee
Zoomlion Heavy Industry Science and Technology Co Ltd
Changsha Zoomlion Environmental Sanitation Machinery Co Ltd
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Priority to CN201420001539.4U priority Critical patent/CN203655739U/en
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Abstract

The utility model discloses a pulling-arm type self loading and unloading device and a garbage truck with a detachable compartment provided therewith. The pulling-arm type self loading and unloading device comprises a pulling arm and a hydraulic cylinder (1) connected with the pulling arm and used for driving the pulling arm. The hydraulic cylinder (1) is connected with a telescopic reversing control loop. A first working oil way (5) and a second working oil way (6) of the telescopic reversing control loop are respectively provided with a first balancing valve (9) and a second balancing valve (10). The first working oil way (5) is further provided with a parallel oil way (17) connected with the first balancing valve (9) in parallel. The parallel oil way (17) is provided with a switch valve (13). When a main reversing valve (4) is disposed at the middle position, a first working oil port, a second working oil port and an oil returning port are communicated via an internal oil way of the main reversing valve (4).

Description

Draw-arm Self-loading-unloading device and there is its compartment removable garbage truck
Technical field
The utility model relates to engineering machinery field, particularly, relates to a kind of draw-arm Self-loading-unloading device of engineering machinery.On this basis, the utility model also relates to a kind of compartment removable garbage truck that comprises described draw-arm Self-loading-unloading device.
Background technique
By hydraulic pressure or mechanical lift and voluntarily the vehicle of handling goods is a kind of conventional engineering machinery, in carriage lifting unloading and compartment falling process, should be able to make its motion steady.For example, in the time of compartment removable garbage truck vanning body, first vehicle pulls ground by casing, then put it on vehicle frame, the process need putting down is steady, when especially casing is about to set level, can not produce large impact to vehicle, otherwise will cause vehicle frame permanent deformation, weld bond cracking, destroy the problems such as oil hydraulic cylinder, and cause the vehicle lost of life, even serious security incident occur.
In the compartment falling process of existing Self-loading-unloading equipment after vanning or unloading, do not consider the compartment impact of moment to equipment or chassis frame that put in place.For this reason, be necessary to provide a kind of device that can solve above-mentioned prior art problem.
Model utility content
Problem to be solved in the utility model is to provide a kind of draw-arm Self-loading-unloading device, this draw-arm Self-loading-unloading device is on load (as compartment) falls carriage return frame time, can effectively slow down the movement velocity while falling after rise to horizontal position, thereby buffer mechanism impacts, and have simple in structure, be easy to the advantages such as realization.
To achieve these goals, the utility model provides a kind of draw-arm Self-loading-unloading device, comprise torque arm and be connected in this torque arm for driving the oil hydraulic cylinder of this torque arm, this oil hydraulic cylinder is connected with flexible commutation control loop, this flexible commutation control loop comprises main reversing valve, the filler opening of this main reversing valve and return opening are connected to oil-feed oil circuit and oil return circuit, and the first actuator port of this main reversing valve and the second actuator port are connected in respectively rod chamber and the rodless cavity of described oil hydraulic cylinder accordingly by the first working oil path and the second working oil path, in described the first working oil path, be provided with the first equilibrium valve, the control port of this first equilibrium valve is connected with described the second working oil path by the first oil circuit control, in described the second working oil path, be provided with the second equilibrium valve, the control port of this second equilibrium valve is connected with described the first working oil path by the second oil circuit control, wherein, in described the first working oil path, be also provided with the oil circuit in parallel being connected in parallel with described the first equilibrium valve, on this parallel connection oil circuit, be provided with switch valve, under state at the spool of described main reversing valve in meta, described the first actuator port, described the second actuator port and described return opening can be interconnected by the inside oil duct of described main reversing valve.
Preferably, under the state of closing in right position and described switch valve at the spool of described main reversing valve, described filler opening is communicated with described the first actuator port, described the second actuator port and described return opening are interconnected, thereby make described the first working oil path oil-feed and the second working oil path oil return, so that described oil cylinder is stretched out.
Preferably, under the state of closing in meta and described switch valve at the spool of described main reversing valve, the rodless cavity of described oil hydraulic cylinder and rod chamber are by described the first equilibrium valve and the second equilibrium valve locking.
Preferably, under the state of opening in meta and described switch valve at the spool of described main reversing valve, hydraulic oil in the rodless cavity of described oil hydraulic cylinder can be via described the first working oil path, oil circuit in parallel, described main reversing valve, the second working oil path and is transported to the rod chamber of described oil hydraulic cylinder, can retract at a slow speed with the piston rod that makes described oil hydraulic cylinder.
Preferably, under the state of closing in left position and described switch valve at the spool of described main reversing valve, described filler opening is communicated with described the second actuator port, described the first actuator port and described return opening are interconnected, thereby make described the second working oil path oil-feed and the first working oil path oil return, so that described oil cylinder is retracted.
Preferably, on described oil circuit in parallel, be also provided with throttle valve.
Preferably, on described oil-feed oil circuit, be provided with oil hydraulic pump, the inlet port of this oil hydraulic pump is communicated with fuel tank, and described oil return circuit is communicated with described fuel tank, is connected with the overflow oil circuit that is provided with relief valve on described oil-feed oil circuit, is also provided with filter on described oil return circuit.
Preferably, described switch valve is bi-bit bi-pass solenoid directional control valve, described main reversing valve is Y type 3-position 4-way solenoid directional control valve, this draw-arm Self-loading-unloading device also comprises controller and the position transducer for detection of the piston position of described oil hydraulic cylinder, and described position transducer, described main reversing valve and described switch valve are electrically connected on respectively described controller.
The utility model also provides a kind of compartment removable garbage truck, and this compartment removable garbage truck comprises above-mentioned draw-arm Self-loading-unloading device.Under preferred implementation of the present utility model, described position transducer is positioned at the below of described torque arm, and the position by detecting described torque arm is to detect the described piston position of described oil hydraulic cylinder.
Pass through technique scheme, in the time that piston is about to fall after rise to extreme lower position (as fallen after rise to horizontal position in compartment), switch main reversing valve in meta, and make switch valve in open mode, the hydraulic oil of rodless cavity can flow by the first working oil path, a part enters rod chamber by the second working oil path, and another part enters fuel tank by oil return circuit.In said process, not needing oil hydraulic pump is system fuel feeding, and fluid flows and under load (as compartment) Gravitative Loads, promotes piston movement and form, thereby piston can slowly move, and it is less that compartment falls the mechanical shock causing after rise.
In addition, the conducting pressure that can be configured such that the first equilibrium valve and the control port separately of the second equilibrium valve is the maximum force to hydraulic cylinder piston higher than load, thereby when main reversing valve in meta and switch valve under closed condition, can carry out locking to torque arm.
Other feature and advantage of the present utility model are described in detail the embodiment part subsequently.
Brief description of the drawings
Accompanying drawing is to be used to provide further understanding of the present utility model, and forms a part for specification, is used from explanation the utility model, but does not form restriction of the present utility model with embodiment one below.In the accompanying drawings:
Fig. 1 is according to the connection diagram of the flexible commutation control loop of a kind of preferred implementation of the utility model;
Fig. 2 is the schematic diagram of compartment removable garbage truck.
Description of reference numerals
1 oil hydraulic cylinder 2 oil-feed oil circuits
3 oil return circuit 4 main reversing valves
5 first working oil path 6 second working oil path
7 fuel tank 8 oil hydraulic pumps
9 first equilibrium valve 10 second equilibrium valves
11 first oil circuit control 12 second oil circuit controls
13 switch valve 14 overflow oil circuits
15 relief valve 16 filters
17 oil circuit 18 throttle valve in parallel
19 position transducer 20 compartments
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated.Should be understood that, embodiment described herein only, for description and interpretation the utility model, is not limited to the utility model.
First it should be noted that, hydraulic control circuit of the present utility model belongs to Hydraulic Field, and its substantive technical conceive is hydraulic connecting relation, and does not lie in concrete mechanical structure.For example, the first equilibrium valve, the second equilibrium valve and the oil circuit in parallel etc. that in the draw-arm Self-loading-unloading device with regard to the utility model preferred implementation, adopt can be formed as separately independently hydraulic element, also can integrally form with the form of valve piece.
Referring to accompanying drawing, hydraulic system of the present utility model is described in detail:
Shown in seeing figures.1.and.2, according to the draw-arm Self-loading-unloading device of a kind of embodiment of the utility model, comprise torque arm and be connected in this torque arm for driving the oil hydraulic cylinder 1 of this torque arm, this oil hydraulic cylinder 1 is connected with flexible commutation control loop, this flexible commutation control loop comprises main reversing valve 4, the filler opening of this main reversing valve 4 and return opening are connected to oil-feed oil circuit 2 and oil return circuit 3, and the first actuator port of this main reversing valve 4 and the second actuator port are connected in respectively rod chamber and the rodless cavity of described oil hydraulic cylinder 1 accordingly by the first working oil path 5 and the second working oil path 6, in described the first working oil path 5, be provided with the first equilibrium valve 9, the control port of this first equilibrium valve 9 is connected with described the second working oil path 6 by the first oil circuit control 11, in described the second working oil path 6, be provided with the second equilibrium valve 10, the control port of this second equilibrium valve 10 is connected with described the first working oil path 5 by the second oil circuit control 12.Unlike the prior art, draw-arm Self-loading-unloading device of the present utility model is also provided with the oil circuit in parallel 17 being connected in parallel with described the first equilibrium valve 9 in the first working oil path 5, and be provided with switch valve 13 on this parallel connection oil circuit 17, under state at described main reversing valve 4 in meta, described the first actuator port, described the second actuator port and described oil return hydraulic fluid port are interconnected by the inside oil duct of described main reversing valve 4.
In the time that piston is about to fall after rise to extreme lower position (as fallen after rise to horizontal position in compartment), switch main reversing valve 4 in meta, and make switch valve 13 in open mode, the hydraulic oil of rodless cavity can flow by the first working oil path 5, a part enters rod chamber by the second working oil path 6, and another part enters fuel tank 7 by oil return circuit 3.In said process, not needing oil hydraulic pump is system fuel feeding, and fluid flows and under load (as compartment) Gravitative Loads, promotes piston movement and form, thereby piston can slowly move, and it is less that compartment falls the mechanical shock causing after rise.
The speed of stretching out and shrinking for control piston, in the draw-arm Self-loading-unloading device of the utility model embodiment, be arranged on the first equilibrium valve 9 in the first working oil path 5 and be arranged on the second equilibrium valve 10 speed that control piston shrinks and stretches out respectively in the second working oil path 6.
Particularly, in the first equilibrium valve 9, the forward port of one-way valve and the control port of the second equilibrium valve 10 are all connected with the first actuator port of main reversing valve 4, and in the first equilibrium valve 9, the reverse port of one-way valve is communicated with the rodless cavity of oil hydraulic cylinder 1; In the second equilibrium valve 10, the forward port of one-way valve and the control port of the first equilibrium valve 9 are all connected with the second actuator port of main reversing valve 4, and in the second equilibrium valve 10, the reverse port of one-way valve is communicated with the rod chamber of oil hydraulic cylinder 1.
In addition, the conducting pressure that can be configured such that the first equilibrium valve 9 and the second equilibrium valve 10 control port is separately the maximum force to oil hydraulic cylinder 1 piston higher than load, thereby when main reversing valve 4 in meta and switch valve 13 under closed condition, can carry out locking to torque arm, elevator system Safety performance.
Further, in the flexible commutation control loop shown in Fig. 1, when under the spool of main reversing valve 4 state in right position, described filler opening and described the first actuator port, described the second actuator port and described return opening are interconnected by the inside oil duct of described main reversing valve 4 respectively; When under the spool of main reversing valve 4 state in left position, described filler opening and described the second actuator port, described the first actuator port and described return opening are interconnected by the inside oil duct of described main reversing valve 4 respectively.Thereby during in right position, oil hydraulic pump 8 drives the piston of oil hydraulic cylinder 1 to stretch out at the spool of main reversing valve 4, with by driving torque arm that compartment is unloaded; At the spool of main reversing valve 4, during in left position, oil hydraulic pump 8 drives the piston-retraction of oil hydraulic cylinder 1, with by driving torque arm that vehicle frame is loaded onto in compartment.In above-mentioned cargo handling process, the stretching speed of piston is subject to the restriction of the first equilibrium valve 9 and the second equilibrium valve 10, with the security risk of avoiding the too fast motion of torque arm to cause.Above-mentioned switch valve 13 can, for any one valve body with switching function, be illustrated in figure 1 bi-bit bi-pass solenoid directional control valve, and one of them position is provided with one-way valve.Described main reversing valve also can be formed as various structures, is Y type 3-position 4-way solenoid directional control valve shown in Fig. 1.
Draw-arm Self-loading-unloading device of the present utility model mainly falls after rise and plays buffer function when approaching extreme position at piston, replace in order to handle main reversing valve 4 in good time, can be provided for the position transducer 19 of the piston position that detects oil hydraulic cylinder 1, this hydrostatic sensor 19 can be arranged on piston rod and get angry on the miscellaneous part being connected with this piston, for example can be arranged on the vehicle frame under Tipper Lifting arm, in order to detect the position in compartment.
Further, draw-arm Self-loading-unloading device of the present utility model can also comprise controller, position transducer 19, main reversing valve 4 and switch valve 13 are connected to this controller, thereby position transducer 19 sends piston position signal to it, then controller sends corresponding control signal to main reversing valve 4 and switch valve 13 respectively according to actual conditions, the first working oil path 5 and the second working oil path 6 and oil return circuit 3 are interconnected, play buffer function.
For further damper piston falls speed after rise, can also on described oil circuit 17 in parallel, throttle valve 18 be set, control running of hydraulic power oil speed.
In above-mentioned draw-arm Self-loading-unloading device, can on oil-feed oil circuit 2, be provided with oil hydraulic pump 8, the inlet port of this oil hydraulic pump 8 is communicated with fuel tank 7, oil return circuit 3 is communicated with fuel tank 7, on oil-feed oil circuit 2, connect overflow oil circuit 14, on this overflow oil circuit 14, be provided with relief valve 15, the oil pressure relief of this relief valve 15 is not less than the conducting pressure of the first equilibrium valve 9 and the second equilibrium valve 10.On oil return circuit 3, filter 16 can also be set, the hydraulic oil that is about to flow back to fuel tank 7 is filtered.
As described in Figure 2, the utility model also provides a kind of compartment removable garbage truck, and this compartment removable garbage truck comprises the draw-arm Self-loading-unloading device that the utility model provides.Under preferred implementation, described position transducer 19 can be positioned at the below of described torque arm, and the position by detecting described torque arm is to detect the described piston position of described oil hydraulic cylinder 1.
Hydraulic system of the present utility model can, for the multiple occasion that needs buffering, be set forth a kind of preferred implementation of the utility model below in conjunction with Fig. 1 and Fig. 2, so that understand better the utility model:
Compartment removable garbage truck in Fig. 2 comprises detachable type compartment 20, and this compartment 20 is driven by torque arm, and torque arm is by oil hydraulic cylinder 1 piston driving.Compartment 20 lower position that are positioned at of vehicle frame are provided with the position transducer 19 that detects lift arm position.Control the flexible commutation control loop of described oil hydraulic cylinder 1 as shown in Figure 1, wherein main reversing valve 4, switch valve 13 and position transducer 19 are all electrically connected on controller.
Stretch out in process at piston, electric, DT3 dead electricity that DT2 obtains, oil hydraulic pump 8, is promoted piston and stretches out to oil hydraulic cylinder 1 rodless cavity fuel feeding by the first equilibrium valve 9, torque arm drives compartment 20 to compartment removable garbage truck motion, completes on the ground self-unloading action until compartment 20 is placed reposefully; Meanwhile, the hydraulic oil of rod chamber flows back to fuel tank from the second working oil path 6 and the oil return circuit 3 with the second equilibrium valve 10.
Correspondingly, in piston retraction process, electric, DT3 dead electricity that DT1 obtains, oil hydraulic pump 8 to oil hydraulic cylinder 1 rod chamber fuel feeding, promotes piston retraction by the second equilibrium valve 10, and torque arm drives compartment 20 built on stilts, is the level of state until compartment 20 moves to approach; Meanwhile, the hydraulic oil of rodless cavity flows back to fuel tank from the first working oil path 5 and the oil return circuit 3 with the first equilibrium valve 9.
In above-mentioned piston retraction process, piston retraction until position transducer 19 detect torque arm approach after, to controller transmitted signal, control makes DT1 and DT2 dead electricity simultaneously, DT3 obtains electric, and under jib and compartment 20 Gravitative Loads, the hydraulic oil of rodless cavity flows to rod chamber by switch valve 13, unnecessary part hydraulic oil flows back to fuel tank by oil return circuit 3, until compartment 20 falls to being back to complete on vehicle frame self-chambering action.Move to extreme lower position than oil hydraulic pump 8 driven plunger, the mode of this dependence deadweight return is more even, stable, has good cushioning effect.
Below describe by reference to the accompanying drawings preferred implementation of the present utility model in detail; but; the utility model is not limited to the detail in above-mentioned mode of execution; within the scope of technical conceive of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
It should be noted that in addition each the concrete technical characteristics described in above-mentioned embodiment, in reconcilable situation, can combine by any suitable mode.For fear of unnecessary repetition, the utility model is to the explanation no longer separately of various possible compound modes.
In addition, also can carry out combination in any between various mode of execution of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.

Claims (10)

1. a draw-arm Self-loading-unloading device, comprise torque arm and be connected in this torque arm for driving the oil hydraulic cylinder (1) of this torque arm, this oil hydraulic cylinder (1) is connected with flexible commutation control loop, this flexible commutation control loop comprises main reversing valve (4), the filler opening of this main reversing valve (4) and return opening are connected to oil-feed oil circuit (2) and oil return circuit (3), and first actuator port of this main reversing valve (4) and the second actuator port are connected in respectively rod chamber and the rodless cavity of described oil hydraulic cylinder (1) accordingly by the first working oil path (5) and the second working oil path (6), in described the first working oil path (5), be provided with the first equilibrium valve (9), the control port of this first equilibrium valve (9) is connected with described the second working oil path (6) by the first oil circuit control (11), in described the second working oil path (6), be provided with the second equilibrium valve (10), the control port of this second equilibrium valve (10) is connected with described the first working oil path (5) by the second oil circuit control (12), it is characterized in that, in described the first working oil path (5), be also provided with the oil circuit in parallel (17) being connected in parallel with described the first equilibrium valve (9), on this parallel connection oil circuit (17), be provided with switch valve (13), under state at the spool of described main reversing valve (4) in meta, described the first actuator port, described the second actuator port and described return opening can be interconnected by the inside oil duct of described main reversing valve (4).
2. draw-arm Self-loading-unloading device according to claim 1, it is characterized in that, under the state of closing in right position and described switch valve (13) at the spool of described main reversing valve (4), described filler opening is communicated with described the first actuator port, described the second actuator port and described return opening are interconnected, thereby make described the first working oil path (5) oil-feed and the second working oil path (6) oil return, so that described oil cylinder is stretched out.
3. draw-arm Self-loading-unloading device according to claim 1, it is characterized in that, under the state of closing in meta and described switch valve (13) at the spool of described main reversing valve (4), the rodless cavity of described oil hydraulic cylinder (1) and rod chamber are by described the first equilibrium valve (9) and the second equilibrium valve (10) locking.
4. draw-arm Self-loading-unloading device according to claim 1, it is characterized in that, under the state of opening in meta and described switch valve (13) at the spool of described main reversing valve (4), hydraulic oil in the rodless cavity of described oil hydraulic cylinder (1) can be via described the first working oil path (5), oil circuit in parallel (17), described main reversing valve (4), the second working oil path (6) and is transported to the rod chamber of described oil hydraulic cylinder (1), can retract at a slow speed with the piston rod that makes described oil hydraulic cylinder (1).
5. draw-arm Self-loading-unloading device according to claim 1, it is characterized in that, under the state of closing in left position and described switch valve (13) at the spool of described main reversing valve (4), described filler opening is communicated with described the second actuator port, described the first actuator port and described return opening are interconnected, thereby make described the second working oil path (6) oil-feed and the first working oil path (5) oil return, so that described oil cylinder is retracted.
6. draw-arm Self-loading-unloading device according to claim 1, is characterized in that, is also provided with throttle valve (18) on described oil circuit in parallel (17).
7. draw-arm Self-loading-unloading device according to claim 1, it is characterized in that, on described oil-feed oil circuit (2), be provided with oil hydraulic pump (8), the inlet port of this oil hydraulic pump (8) is communicated with fuel tank (7), described oil return circuit (3) is communicated with described fuel tank (7), on described oil-feed oil circuit (2), be connected with the overflow oil circuit (14) that is provided with relief valve (15), on described oil return circuit (3), be also provided with filter (16).
8. according to the draw-arm Self-loading-unloading device described in any one in claim 1 to 7, it is characterized in that, described switch valve (13) is bi-bit bi-pass solenoid directional control valve, described main reversing valve (4) is Y type 3-position 4-way solenoid directional control valve, this draw-arm Self-loading-unloading device also comprises controller and the position transducer (19) for detection of the piston position of described oil hydraulic cylinder (1), and described position transducer (19), described main reversing valve (4) and described switch valve (13) are electrically connected on respectively described controller.
9. a compartment removable garbage truck, is characterized in that, this compartment removable garbage truck comprises according to the draw-arm Self-loading-unloading device described in any one in claim 1 to 7.
10. a compartment removable garbage truck, it is characterized in that, this compartment removable garbage truck comprises draw-arm Self-loading-unloading device according to claim 8, described position transducer (19) is positioned at the below of described torque arm, and the position by detecting described torque arm is to detect the described piston position of described oil hydraulic cylinder (1).
CN201420001539.4U 2014-01-02 2014-01-02 Pulling-arm type self loading and unloading device and garbage truck with detachable compartment provided therewith Expired - Lifetime CN203655739U (en)

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CN201420001539.4U CN203655739U (en) 2014-01-02 2014-01-02 Pulling-arm type self loading and unloading device and garbage truck with detachable compartment provided therewith

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104295547A (en) * 2014-09-25 2015-01-21 长沙中联消防机械有限公司 Hydraulic control loop and engineering machine
CN105346896A (en) * 2015-11-19 2016-02-24 湖北精功科技有限公司 Electric hook arm system for hook arm garbage truck
CN106240427A (en) * 2016-08-11 2016-12-21 长沙中联恒通机械有限公司 A kind of overall self-loading and unloading vehicle arm support control system and loading, unloading method
CN108529097A (en) * 2018-06-13 2018-09-14 东莞海特帕沃液压科技有限公司 A kind of control valve for compression type garbage truck
CN117698545A (en) * 2024-02-06 2024-03-15 三一重型装备有限公司 Lifting control system, method and device of mining vehicle and mining vehicle

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104295547A (en) * 2014-09-25 2015-01-21 长沙中联消防机械有限公司 Hydraulic control loop and engineering machine
CN105346896A (en) * 2015-11-19 2016-02-24 湖北精功科技有限公司 Electric hook arm system for hook arm garbage truck
CN106240427A (en) * 2016-08-11 2016-12-21 长沙中联恒通机械有限公司 A kind of overall self-loading and unloading vehicle arm support control system and loading, unloading method
CN108529097A (en) * 2018-06-13 2018-09-14 东莞海特帕沃液压科技有限公司 A kind of control valve for compression type garbage truck
CN108529097B (en) * 2018-06-13 2019-11-01 河北极驰新能源科技有限公司 A kind of control valve for compression type garbage truck
CN117698545A (en) * 2024-02-06 2024-03-15 三一重型装备有限公司 Lifting control system, method and device of mining vehicle and mining vehicle

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Address after: 410000 Hunan province Changsha hi tech Development Zone, Lin Yulu No. 288

Co-patentee after: ZOOMLION HEAVY INDUSTRY SCIENCE AND TECHNOLOGY Co.,Ltd.

Patentee after: ZOOMLION ENVIRONMENTAL INDUSTRY Co.,Ltd.

Address before: 410013 Changsha province high tech Development Zone, No. 307 South Road, silver basin

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Address after: 410000 Hunan province Changsha hi tech Development Zone, Lin Yulu No. 288

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Address before: 410000 Hunan province Changsha hi tech Development Zone, Lin Yulu No. 288

Co-patentee before: ZOOMLION HEAVY INDUSTRY SCIENCE AND TECHNOLOGY Co.,Ltd.

Patentee before: ZOOMLION ENVIRONMENTAL INDUSTRY Co.,Ltd.

CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20140618