CN110254323A - The lifting device of dumper - Google Patents
The lifting device of dumper Download PDFInfo
- Publication number
- CN110254323A CN110254323A CN201910569667.6A CN201910569667A CN110254323A CN 110254323 A CN110254323 A CN 110254323A CN 201910569667 A CN201910569667 A CN 201910569667A CN 110254323 A CN110254323 A CN 110254323A
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- Prior art keywords
- mouth
- valve
- control valve
- pilot operated
- directional control
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60P—VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
- B60P1/00—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
- B60P1/04—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with a tipping movement of load-transporting element
- B60P1/16—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with a tipping movement of load-transporting element actuated by fluid-operated mechanisms
- B60P1/162—Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading with a tipping movement of load-transporting element actuated by fluid-operated mechanisms the hydraulic system itself
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
A kind of lifting device of dumper, including hydraulic pump, hand-operated direction valve, elevating ram, power takeoff, fuel tank, gas bag, solenoid valve, pressure switch, power supply and pilot operated directional control valve；The air inlet P of solenoid valve is connected to gas bag, and the execution mouth A and execution mouth B of solenoid valve are connected to the rodless cavity of power takeoff cylinder assembly and rod chamber respectively；Terminals K, pressure switch and the power supply of solenoid valve are sequentially connected electrically and are formed into a loop；The execution mouth A of pilot operated directional control valve is connected to the control mouth K of pressure switch；When use, first oil inlet P 1 of pilot operated directional control valve is connected on the execution mouth A to the oily channel of forward gear clutch of shift control valve, and the second oil inlet P 2 of pilot operated directional control valve and the control mouth K of pilot operated directional control valve are both connected on the execution mouth B to the oily channel of retreating gear clutch of shift control valve.The present invention can be achieved dumper and hang in forward gear or retreating gear driving process, even if maloperation hand-operated direction valve, compartment will not be lifted.
Description
Technical field
The present invention relates to a kind of dumper, in particular to a kind of lifting device of dumper.
Background technique
Dumper is mainly used to carry out the handling transport of the earthwork, sandstone, bulk material.As shown in figure 3, the prior art from
The lifting device unloaded includes hydraulic pump 30, hand-operated direction valve 31, elevating ram 32 and power takeoff 33 and fuel tank 35, hydraulic pump 30
Input shaft and power takeoff 33 be sequentially connected, power takeoff 33 can use Chinese patent literature CN201187551Y(application number
200820086664.4) disclosed in odd-side jackshaft lengthen automobile power transmission device.Power takeoff 33 includes that power takeoff cylinder is total
At 40.When the rod chamber of power takeoff cylinder assembly 40 is passed through pressed gas, power takeoff 33 is in off-gear state, i.e., engine is dynamic
Power cannot be transmitted on power takeoff 33, can not be transmitted on the input shaft for the hydraulic pump 30 being sequentially connected with power takeoff 33；When
When the rodless cavity of power takeoff cylinder assembly 40 is passed through pressed gas, for power takeoff 33 in the state of putting into gear, i.e. the power of engine can be with
It is transmitted on power takeoff 33, it can also be at this moment hydraulic on the input shaft for delivery to the hydraulic pump 30 being sequentially connected with power takeoff 33
Pump 30 can be with pressure oil output.The oil inlet of hydraulic pump 30 is connected to fuel tank 35, the oil outlet and hand-operated direction valve of hydraulic pump 30
31 oil inlet P mouth connection, hand-operated direction valve 31 execute mouth A mouthful and mouth B mouthfuls of rodless cavity with elevating ram 32 respectively of execution
It is connected to rod chamber.When dumper needs to carry out self-unloading operation, hand-operated direction valve 31 only need to be operated, makes hand-operated direction valve 31
Oil inlet P with execute mouth A communicate, the pressure oil in hydraulic pump 30 enters the rodless cavity of elevating ram 32, by elevating ram 32
Piston rod drive dumper compartment lift, to carry out self-unloading operation.The lifting device of the dumper of the prior art is certainly
Unload and hang during forward gear or retreating gear travel, power takeoff 33 cannot automatic off-gear, i.e., power takeoff 33 can in the state of putting into gear,
At this moment the power of engine can be for delivery on power takeoff 33, can also be for delivery to the hydraulic pump 30 being sequentially connected with power takeoff 33
Input shaft on, hydraulic pump 30 can be with pressure oil output, if at this moment driver's accidentally maloperation hand-operated direction valve 31, makes manually
The oil inlet P of reversal valve 31 is communicated with mouth A is executed, and the pressure oil in hydraulic pump 30 will enter the rodless cavity of elevating ram 32,
The piston rod of elevating ram 32 stretches out, and the compartment of dumper is driven by the piston rod of elevating ram 32, lifts the compartment of dumper
It rises, in this way when dumper is by a lower height of place, is easy to happen collision accident, there is great security risk.
Summary of the invention
It is an object of the invention to propose that a kind of dumper is hung in forward gear or retreating gear driving process, even if maloperation hand
Dynamic reversal valve, the lifting device for the dumper that compartment will not lift.
In order to achieve the above objectives, the present invention adopts the following technical scheme that: a kind of lifting device of dumper, including hydraulic
Pump, hand-operated direction valve, elevating ram, power takeoff and fuel tank；The power takeoff includes power takeoff cylinder assembly；The hydraulic pump
Input shaft and power takeoff are sequentially connected, and the oil inlet of hydraulic pump is connected to fuel tank, the oil outlet of hydraulic pump and hand-operated direction valve
The connection of oil inlet P mouth；A mouthfuls of the execution mouth of the hand-operated direction valve and execute mouth B mouthfuls respectively with the rodless cavity of elevating ram and have
Rod cavity connection.
It further include gas bag, solenoid valve, pressure switch, power supply and pilot operated directional control valve；The air inlet P and gas bag of the solenoid valve
Connection, the execution mouth A and execution mouth B of solenoid valve are connected to the rodless cavity of power takeoff cylinder assembly and rod chamber respectively；The electricity
Terminals K, pressure switch and the power supply of magnet valve are sequentially connected electrically and are formed into a loop；When the control mouth K of pressure switch is passed through pressure
When oily, pressure switch is connected, and at this moment the terminals K of solenoid valve is obtained electric；When the terminals K of solenoid valve obtains electric, solenoid valve into
Port P is communicated with mouth B is executed；The gas outlet T of the solenoid valve is communicated with atmosphere；The execution mouth A and pressure of the pilot operated directional control valve
The control mouth K connection of power switch；In use, the first oil inlet P 1 of the pilot operated directional control valve is connected to the execution of shift control valve
On mouth A to the oily channel of forward gear clutch, the second oil inlet P 2 of pilot operated directional control valve and the control mouth K of pilot operated directional control valve connect
It connects on oily channel of the execution mouth B in shift control valve to retreating gear clutch；When the control mouth K of pilot operated directional control valve is passed through pressure
When oily, the second oil inlet P 2 of pilot operated directional control valve is communicated with mouth A is executed.
The fuel tank to hydraulic pump oil inlet oily channel be equipped with filter.
The oil outlet of the hydraulic pump to the oily channel of fuel tank is equipped with safety valve.
The present invention has following good effect: (1) since the air inlet P of of the invention solenoid valve with gas bag be connected to, electromagnetism
The execution mouth A and execution mouth B of valve are connected to the rodless cavity of power takeoff cylinder assembly and rod chamber respectively；The terminals K of solenoid valve,
Pressure switch and power supply are sequentially connected electrically and are formed into a loop；When the control mouth K of pressure switch is passed through pressure oil, pressure switch is connect
Logical, at this moment the terminals K of solenoid valve is obtained electric；When the terminals K of solenoid valve obtains electric, air inlet P and the execution mouth B phase of solenoid valve
It is logical；The execution mouth A of pilot operated directional control valve is connected to the control mouth K of pressure switch；In use, the first oil inlet P 1 of pilot operated directional control valve
It is connected on the execution mouth A to the oily channel of forward gear clutch of shift control valve, 2 He of the second oil inlet P of pilot operated directional control valve
The control mouth K of pilot operated directional control valve is both connected on the execution mouth B to the oily channel of retreating gear clutch of shift control valve, thus is worked as
Driver hangs forward gear or retreating gear when driving, and at this moment the oil inlet P of shift control valve communicates or shift control with execution mouth A
The oil inlet P of valve is communicated with mouth B is executed, and the pressure oil in accumulator enters forward gear clutch or retreating gear clutch, at this moment
The control mouth K of pilot operated directional control valve is not passed through pressure oil or the control mouth K of pilot operated directional control valve is passed through pressure oil, pilot operated directional control valve
The first oil inlet P 1 with execute mouth A communicate or the first oil inlet P 2 of pilot operated directional control valve with execution mouth A communicate, in accumulator
Pressure oil enter the control mouth K of pressure switch through pilot operated directional control valve again through shift control valve, pressure switch is connected, solenoid valve
Terminals K obtains electric, and the air inlet P of solenoid valve is communicated with mouth B is executed, and the rod chamber of power takeoff cylinder assembly is connected into pressure gas
Body, power takeoff cannot be transmitted on power takeoff in off-gear state, the i.e. power of engine, can not be transmitted to and are driven with power takeoff
On the input shaft of the hydraulic pump of connection, hydraulic pump is unable to pressure oil output, even if at this moment driver accidentally change manually by maloperation
It to valve, communicates the oil inlet P of hand-operated direction valve with mouth A is executed, but since hydraulic pump is unable to pressure oil output, thus does not also have
Pressure oil enters the rodless cavity of elevating ram, and the piston rod of elevating ram cannot stretch out, and can not drive the compartment of dumper
It lifting, i.e., dumper is hung in forward gear or retreating gear driving process, even if maloperation hand-operated direction valve, compartment will not be lifted,
In this way when dumper is by a lower height of place, it is not easy to it crashes, it is just very safe.
Detailed description of the invention
Fig. 1 is the principle of the present invention figure；
Fig. 2 is the schematic diagram of the stopping device of dumper；
Fig. 3 is the schematic diagram of the lifting device of the prior art；
Fig. 4 is the present invention and stopping device catenation principle figure.
Appended drawing reference in above-mentioned attached drawing is as follows: gas bag 1, solenoid valve 2, pressure switch 3, power supply 4, pilot operated directional control valve 5, liquid
Press pump 30, hand-operated direction valve 31, elevating ram 32, power takeoff 33, fuel tank 35, shift control valve 50, control stick 50-1, forward gear
Clutch 51, retreating gear clutch 52 and accumulator 53.
Specific embodiment
Below in conjunction with attached drawing and the embodiment provided, the present invention is further illustrated.
As shown in Figure 1, a kind of lifting device of dumper, including hydraulic pump 30, hand-operated direction valve 31, elevating ram 32,
Power takeoff 33 and fuel tank 35；Power takeoff 33 includes power takeoff cylinder assembly 40；The input shaft and power takeoff 33 of hydraulic pump 30 are driven
Connection, the oil inlet of hydraulic pump 30 are connected to fuel tank 35, the oil outlet of hydraulic pump 30 and the oil inlet P mouth of hand-operated direction valve 31
Connection；Mouth B mouthfuls of A mouthfuls of the execution mouth of hand-operated direction valve 31 and execution are connected to the rodless cavity of elevating ram 32 and rod chamber respectively.
It further include gas bag 1, solenoid valve 2, pressure switch 3, power supply 4 and pilot operated directional control valve 5；Pressure switch 3 uses model
The pressure switch of DNM-03P-100K-21B.The air inlet P of solenoid valve 2 is connected to gas bag 1, the execution mouth A of solenoid valve 2 and is held
Row mouth B is connected to the rodless cavity of power takeoff cylinder assembly 40 and rod chamber respectively；Terminals K, 3 and of pressure switch of solenoid valve 2
Power supply 4 is sequentially connected electrically and is formed into a loop；When the control mouth K of pressure switch 3 is passed through pressure oil, pressure switch 3 is connected, at this moment
The terminals K of solenoid valve 2 obtains electric；When the control mouth K of pressure switch 3 is not passed through pressure oil, pressure switch 3 is disconnected, at this moment
The terminals K power loss of solenoid valve 2.When the terminals K of solenoid valve 2 obtains electric, the air inlet P of solenoid valve 2 is communicated with mouth B is executed；
When the terminals K power loss of solenoid valve 2, the air inlet P of solenoid valve 2 is communicated with mouth A is executed.The gas outlet T and atmosphere of solenoid valve 2
It communicates；As shown in figure 4, in the use of the present invention, needing to be used cooperatively with the stopping device of dumper, the gear dress of dumper
It sets as shown in Fig. 2, including shift control valve 50, forward gear clutch 51, retreating gear clutch 52 and accumulator 53, shift control
Valve 50 includes control stick 50-1, and the oil inlet P of shift control valve 50 is connected to the oil outlet of accumulator 53, shift control valve 50
It executes mouth A to be connected to forward gear clutch 51, the execution mouth B of shift control valve 50 is connected to retreating gear clutch 52, gear control
The control stick 50-1 of valve 50 processed is connect by flexible axle with the gear selector for being located at driver's cabin.When driver's operation is located at driver's cabin
Gear selector, be allowed to hang on forward gear, flexible axle drive shift control valve 50 control stick 50-1 movement, make shift control
The oil inlet P of valve 50 is communicated with mouth A is executed, and the pressure oil in accumulator 53 enters forward gear clutch 51, forward gear clutch
51 are in bonding state, and in conjunction with advance shaft, vehicle can advance line shaft.When the gear that driver's operation is located at driver's cabin selects
It selects device to be allowed to hang in retreating gear, the oil inlet P of shift control valve 50 is communicated with mouth B is executed, and retreating gear clutch 52 is in knot
Conjunction state, in conjunction with retrogressing axis, vehicle can retreat line shaft.When the gear selector that driver's operation is located at driver's cabin is allowed to
It hangs in neutral gear, the oil inlet P and execution mouth A and execution mouth B of shift control valve 50 are not communicated with, and forward gear clutch 51 is with after
It moves back gear clutch 52 and is in discrete state, vehicle can neither advance, and can not retreat.As shown in figure 4, the pilot operated directional control valve
5 execution mouth A is connected to the control mouth K of pressure switch 3；In use, the first oil inlet P 1 of pilot operated directional control valve 5 is connected to gear
On the execution mouth A to the oily channel of forward gear clutch 51 of control valve 50, i.e. the first oil inlet P 1 and gear of pilot operated directional control valve 5
The oily channel of execution mouth A to the forward gear clutch 51 of control valve 50 communicates.Second oil inlet P 2 of pilot operated directional control valve 5 and hydraulic control
The control mouth K of reversal valve 5 is both connected on the execution mouth B to the oily channel of retreating gear clutch 52 of shift control valve 50；That is liquid
The control mouth K of the second oil inlet P 2 and pilot operated directional control valve 5 of controlling reversal valve 5 is extremely retreated with the execution mouth B of shift control valve 50
The oily channel of gear clutch 52 communicates.When the control mouth K of pilot operated directional control valve 5 is passed through pressure oil, pilot operated directional control valve 5 second into
Hydraulic fluid port P2 is communicated with mouth A is executed.When the control mouth K of pilot operated directional control valve 5 is not passed through pressure oil, the first of pilot operated directional control valve 5
Oil inlet P 1 is communicated with mouth A is executed.
Fuel tank 35 to hydraulic pump 30 oil inlet oily channel be equipped with filter 34.
The oil outlet of hydraulic pump 30 to the oily channel of fuel tank 35 is equipped with safety valve 36.
Working principle of the present invention is as follows: when driver hangs forward gear when driving, the at this moment oil inlet P of shift control valve 50
It is communicated with mouth A is executed, the pressure oil in accumulator 53 enters forward gear clutch 51, and at this moment the control mouth K of pilot operated directional control valve 5 does not have
It is passed through pressure oil, the first oil inlet P 1 of pilot operated directional control valve 5 is communicated with mouth A is executed.Pressure oil in accumulator 53 is through gear
The first oil inlet P 1 through pilot operated directional control valve 5 enters the control mouth K of pressure switch 3, pressure switch to the execution mouth A of control valve 50 again
3 control mouth K is passed through pressure oil, and pressure switch 3 is connected, and at this moment, the terminals K of solenoid valve 2 obtains electric, the air inlet P of solenoid valve 2
It is communicated with mouth B is executed, the rod chamber of power takeoff cylinder assembly 40 is connected into pressed gas, power takeoff 33 is sent out in off-gear state
The power of motivation cannot be transmitted on power takeoff 33, can not be transmitted to the input for the hydraulic pump 30 being sequentially connected with power takeoff 33
On axis, hydraulic pump 30 is unable to pressure oil output, even if at this moment driver's accidentally maloperation hand-operated direction valve 31, makes manual reverse of direction
The oil inlet P of valve 31 is communicated with mouth A is executed, but since hydraulic pump 30 is unable to pressure oil output, thus is also entered without pressure oil
The piston rod of the rodless cavity of elevating ram 32, elevating ram 32 cannot stretch out, and the compartment of dumper can not be driven to lift, i.e.,
Even if dumper hangs maloperation hand-operated direction valve 31 in forward gear driving process, compartment will not be lifted, in this way when dumper is logical
When crossing highly lower ground square, it is not easy to it crashes, it is just very safe.
When driver hangs retreating gear when driving, at this moment the oil inlet P of shift control valve 50 is communicated with mouth B is executed, accumulator
Pressure oil in 53 enters retreating gear clutch 52, and at this moment the control mouth K of pilot operated directional control valve 5 is passed through pressure oil, pilot operated directional control valve 5
The second oil inlet P 2 with execute mouth A communicate.Execution mouth B of the pressure oil through shift control valve 50 in accumulator 53 is again through hydraulic control
Second oil inlet P 2 of reversal valve 5 enters the control mouth K of pressure switch 3, and the control mouth K of pressure switch 3 is passed through pressure oil, pressure
Switch 3 is connected, and at this moment, the terminals K of solenoid valve 2 obtains electric, and the air inlet P of solenoid valve 2 is communicated with execution mouth B, power takeoff cylinder
The rod chamber of assembly 40 is connected into pressed gas, and power takeoff 33 cannot be transmitted to power taking in off-gear state, the i.e. power of engine
On device 33, it can not be transmitted on the input shaft for the hydraulic pump 30 being sequentially connected with power takeoff 33, hydraulic pump 30 cannot export pressure
Power oil makes the oil inlet P of hand-operated direction valve 31 and executes mouth A even if at this moment driver's accidentally maloperation hand-operated direction valve 31
It communicates, but since hydraulic pump 30 is unable to pressure oil output, thus also enters the rodless cavity of elevating ram 32 without pressure oil, lift
The piston rod of oil cylinder 32 cannot stretch out, and the compartment of dumper can not be driven to lift, i.e., dumper hangs retreating gear driving process
In, even if maloperation hand-operated direction valve 31, compartment will not be lifted, in this way when dumper is by a lower height of place, no
It is easy to happen collision accident, it is just very safe.
Dumper generally is stopping just carrying out self-unloading operation when driving, and at this moment vehicle is hung in neutral gear, i.e. shift control valve
50 oil inlet P is not communicated with execution mouth A and execution mouth B, at this moment the first oil inlet P 1 and the second oil inlet of pilot operated directional control valve 5
Mouth P2 will not be passed through pressure oil, and the execution mouth A of pilot operated directional control valve 5 there will not be pressure oil, the control mouth of such pressure switch 3
K there will not be pressure oil, and pressure switch 3 disconnects, at this moment, the terminals K power loss of solenoid valve 2, the air inlet P of solenoid valve 2 with hold
Row mouth A is communicated, and the rodless cavity of power takeoff cylinder assembly 40 is connected into pressed gas, and power takeoff 33 is in the state of putting into gear, i.e. engine
Power can be for delivery on power takeoff 33, can also be for delivery to the input shaft for the hydraulic pump 30 being sequentially connected with power takeoff 33
On, 30 pressure oil output of hydraulic pump, at this moment driver operates hand-operated direction valve 31, just can be carried out self-unloading operation.
Claims (3)
1. a kind of lifting device of dumper, including hydraulic pump (30), hand-operated direction valve (31), elevating ram (32), power takeoff
(33) and fuel tank (35)；The power takeoff (33) includes power takeoff cylinder assembly (40)；The input shaft of the hydraulic pump (30) with
Power takeoff (33) transmission connection, the oil inlet of hydraulic pump (30) be connected to fuel tank (35), the oil outlet of hydraulic pump (30) with it is manual
The oil inlet P mouth of reversal valve (31) is connected to；A mouthfuls of the execution mouth of the hand-operated direction valve (31) and execute mouth B mouthfuls respectively with lifting
The rodless cavity of oil cylinder (32) is connected to rod chamber；It is characterized by:
It further include gas bag (1), solenoid valve (2), pressure switch (3), power supply (4) and pilot operated directional control valve (5)；The solenoid valve (2)
Air inlet P be connected to gas bag (1), the execution mouth A of solenoid valve (2) and execute mouth B respectively with power takeoff cylinder assembly (40)
Rodless cavity is connected to rod chamber；Terminals K, pressure switch (3) and the power supply (4) of the solenoid valve (2) are sequentially connected electrically and shape
At circuit；When the control mouth K of pressure switch (3) is passed through pressure oil, pressure switch (3) is connected, the at this moment wiring of solenoid valve (2)
End K obtains electric；When the terminals K of solenoid valve (2) obtains electric, the air inlet P of solenoid valve (2) is communicated with mouth B is executed；The solenoid valve
(2) gas outlet T is communicated with atmosphere；The execution mouth A of the pilot operated directional control valve (5) is connected to the control mouth K of pressure switch (3)；
In use, the first oil inlet P 1 of the pilot operated directional control valve (5) be connected to the execution mouth A of shift control valve (50) to forward gear from
On the oily channel of clutch (51), the second oil inlet P 2 of pilot operated directional control valve (5) and the control mouth K of pilot operated directional control valve (5) are all connected with
On the execution mouth B to the oily channel of retreating gear clutch (52) of shift control valve (50)；When the control mouth of pilot operated directional control valve (5)
When K is passed through pressure oil, the second oil inlet P 2 of pilot operated directional control valve (5) is communicated with mouth A is executed.
2. the lifting device of dumper according to claim 1, it is characterised in that: the fuel tank (35) to hydraulic pump (30)
Oil inlet oily channel be equipped with filter (34).
3. the lifting device of dumper according to claim 1, it is characterised in that: the oil outlet of the hydraulic pump (30) is extremely
The oily channel of fuel tank (35) is equipped with safety valve (36).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910569667.6A CN110254323A (en) | 2019-06-27 | 2019-06-27 | The lifting device of dumper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910569667.6A CN110254323A (en) | 2019-06-27 | 2019-06-27 | The lifting device of dumper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110254323A true CN110254323A (en) | 2019-09-20 |
Family
ID=67922522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910569667.6A Pending CN110254323A (en) | 2019-06-27 | 2019-06-27 | The lifting device of dumper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110254323A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080236322A1 (en) * | 2007-04-02 | 2008-10-02 | Eaton Corporation | Transmission range shift control with neutral position lock |
| CN204354880U (en) * | 2014-12-17 | 2015-05-27 | 常州科研试制中心有限公司 | Dumping car driving and lifting combined control system |
| CN204674433U (en) * | 2015-06-15 | 2015-09-30 | 中国重汽集团福建海西汽车有限公司 | The hoisting system of dumping car |
| CN105782146A (en) * | 2016-05-28 | 2016-07-20 | 王付民 | Lifting control system of dumper |
| CN108357353A (en) * | 2016-05-31 | 2018-08-03 | 吴彬 | Opening door of vehicle forbids running gear and its control mechanism |
| US10076989B2 (en) * | 2015-03-06 | 2018-09-18 | Hyva Holding B.V. | Method and system for operating a tipper |
| CN108869422A (en) * | 2018-07-01 | 2018-11-23 | 刘剑 | The lifting mechanism of dumper and the coordinated control system of walking mechanism |
| CN208918936U (en) * | 2018-10-26 | 2019-05-31 | 北京中车重工机械有限公司 | The hydraulic control device and dynamic compaction machinery of the free off the hook hoist engine of dynamic compaction machinery |
-
2019
- 2019-06-27 CN CN201910569667.6A patent/CN110254323A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080236322A1 (en) * | 2007-04-02 | 2008-10-02 | Eaton Corporation | Transmission range shift control with neutral position lock |
| CN204354880U (en) * | 2014-12-17 | 2015-05-27 | 常州科研试制中心有限公司 | Dumping car driving and lifting combined control system |
| US10076989B2 (en) * | 2015-03-06 | 2018-09-18 | Hyva Holding B.V. | Method and system for operating a tipper |
| CN204674433U (en) * | 2015-06-15 | 2015-09-30 | 中国重汽集团福建海西汽车有限公司 | The hoisting system of dumping car |
| CN105782146A (en) * | 2016-05-28 | 2016-07-20 | 王付民 | Lifting control system of dumper |
| CN108357353A (en) * | 2016-05-31 | 2018-08-03 | 吴彬 | Opening door of vehicle forbids running gear and its control mechanism |
| CN108869422A (en) * | 2018-07-01 | 2018-11-23 | 刘剑 | The lifting mechanism of dumper and the coordinated control system of walking mechanism |
| CN208918936U (en) * | 2018-10-26 | 2019-05-31 | 北京中车重工机械有限公司 | The hydraulic control device and dynamic compaction machinery of the free off the hook hoist engine of dynamic compaction machinery |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190920 |
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