CN106185737A - A kind of adapt to for high-altitude operation vehicle get on or off the bus handle hydraulic control system - Google Patents
A kind of adapt to for high-altitude operation vehicle get on or off the bus handle hydraulic control system Download PDFInfo
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- CN106185737A CN106185737A CN201610774935.4A CN201610774935A CN106185737A CN 106185737 A CN106185737 A CN 106185737A CN 201610774935 A CN201610774935 A CN 201610774935A CN 106185737 A CN106185737 A CN 106185737A
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F11/00—Lifting devices specially adapted for particular uses not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Structural Engineering (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a kind of adaptation to get on or off the bus the hydraulic control system handled for high-altitude operation vehicle, including pump group, connect the control banked direction control valves of getting on the bus of executive component of getting on the bus, and connect the control banked direction control valves of getting off of executive component of getting off；Control banked direction control valves of getting off includes two position three-way valve and supporting leg control valve group；By-pass throttle valve group, it is achieved to the shunting speed governing controlling banked direction control valves of getting on the bus；Electromagnetic relief valve, for system unloaded.The invention has the beneficial effects as follows: 1. by two position three way directional control valve, total system is divided into lower vehicle control and upper vehicle control two parts, make lower vehicle control and upper vehicle control realize interlock function, when get on the bus work time, akinesia of getting off；When get off action time, get on the bus and can not work.2. utilize the control mode of by-pass throttle, at turntable and work platforms, be respectively arranged a by-pass throttle valve, it is simple to staff carries out speed controlling to the system of getting on the bus at turntable and work platforms when operating, and reduces the control cost of system.
Description
Technical field
The invention belongs to high-altitude operation vehicle technical field, be specifically related to a kind of adaptation and get on or off the bus manipulation for high-altitude operation vehicle
Hydraulic control system, be particularly well-suited to the folding-jib overhead working truck control system of low cost.
Background technology
High-altitude operation vehicle refers to transport staff and use equipment to scene and to carry out the special-purpose vehicle of aerial work.For
Facilitate the staff to use, generally get on the bus work platforms and get off and be respectively provided with manipulation device at high-altitude operation vehicle.The most
Some high-altitude operation vehicles, in order to realize manipulation of getting on or off the bus, have two pieces of manual multiple-way valves of use to be respectively placed in get off and get on the bus and realize
Get on or off the bus manipulation, this scheme low cost, but energy consumption is high.There is use electro-hydraulic proportional valve, realize getting on or off the bus manipulation by electrical control,
This scheme pipeline is arranged simple, and speed governing is good, but relatively costly.
Patent CN87215075 control oil circuit of altitude operating vehicle, it is provided that a kind of high altitude vehicle is got on or off the bus the most steerable
Hydraulic control system, this system uses two groups of manual throttle reversal valves, valve A and valve B.Valve A is placed in and gets off, it is achieved manipulation of getting off,
Valve B is placed in and gets on the bus, it is achieved manipulation of getting on the bus.This patent has the advantage that and can realize manipulation of getting on or off the bus, and has speed governing merit
Can, and low cost.This patent there is also certain problem, owing to valve B is positioned at work platforms of getting on the bus, and manipulation unloading condition of getting on the bus
Time, oil flows through valve B from valve A, then is flowed back to fuel tank by valve B, gets on the bus what work platforms was connected with valve A and fuel tank owing to valve B is positioned at
Pipeline is longer, and the pressure loss is big, and system energy consumption is high, and use cost is high.
The hydraulic control system of a patent CN02263150 high-altitude operation vehicle, uses electric proportional control, passing ratio hands
Handle, controller and proportioning valve, it is achieved manipulation of getting on or off the bus.This patent has the advantage that and realizes getting on or off the bus by electrical control
Handling, electricity proportionality velocity modulation, control accuracy is high, and pressure unloading is low.This patent there is also certain problem, due to electric proportional control,
Have employed ratio handle, amplification board and proportioning valve, it is achieved control cost high.
Summary of the invention
It is an object of the invention to overcome deficiency of the prior art, it is provided that a kind of adaptation is got on or off the bus for high-altitude operation vehicle
The hydraulic control system handled, the advantage with low energy consumption, low cost.
For solve prior art problem, the invention discloses a kind of adaptation for high-altitude operation vehicle get on or off the bus handle hydraulic pressure
Control system, including pump group, connects the control banked direction control valves of getting on the bus of executive component of getting on the bus, and connects getting off of executive component of getting off
Control banked direction control valves；Control banked direction control valves of getting off includes two position three-way valve and supporting leg control valve group, the first oil-out of two position three-way valve
Being connected with the oil-in of supporting leg control valve group, its second oil-out is connected with the oil-in controlling banked direction control valves of getting on the bus through working connection,
Its oil recirculating port connecting tank；During the upper work of two position three way directional control valve, the pressure oil that pump group exports is transported to control multichannel of getting on the bus
Valve is to control to get on the bus executive component, during its next work, the pressure oil that pump group exports is transported to supporting leg control valve group to control
Get off executive component；Also include:
By-pass throttle valve group, is connected on and realizes the shunting controlling banked direction control valves of getting on the bus on the working connection controlling banked direction control valves fuel feeding of getting on the bus
Speed governing；
Electromagnetic relief valve, its second oil-out being connected to two position three-way valve and oil return opening, for system unloaded.
Preferably, pump group has high pressure filter with getting off to be connected between control banked direction control valves.
Preferably, the return filter being arranged on oil return circuit is also included.
Preferably, executive component of getting on the bus includes being connected to getting on the bus and controls banked direction control valves and often organize the rotation of rotary table driven on mouth
Loop, underarm luffing loop, upper arm luffing loop, winch lifting loop and crane arm stretch loop.
Preferably, rotation of rotary table loop includes being connected to first group of rotary motor driven on mouth；Underarm luffing loop is wrapped
Include and be connected to second group of underarm luffing balanced valve driven on mouth and underarm luffing hydraulic cylinder；Upper arm luffing loop includes being connected to
The 3rd group of upper arm luffing balanced valve driven on mouth and upper arm luffing hydraulic cylinder；Winch lifting loop includes that being connected to the 4th group drives
One-way balance valve on opening one's mouth and winch motor；Crane arm loop of stretching includes being connected to the one-way balance valve on the 5th driving mouth
With crane arm telescopic oil cylinder.
Preferably, executive component of getting off includes that being connected to supporting leg control valve often organizes the horizontal support legs oil cylinder driven on mouth
And vertical support oil cylinder.
Preferably, one group of supporting leg control valve group driving mouth respectively with horizontal support legs oil cylinder and the big chamber of vertical support oil cylinder
Connect, another group driving mouth passes through the two-way shut-off valve loculus respectively with horizontal support legs oil cylinder and vertical support oil cylinder and is connected.
Preferably, connect respectively and be additionally provided with bidirectional hydraulic lock on the big chamber of vertical support oil cylinder and the oil circuit of loculus.
Preferably, pump group includes the hydraulic pump providing hydraulic power in parallel and donkey pump.
Preferably, by-pass throttle valve group includes the manual turntable throttle grverning valve of series connection and manual platform throttle grverning valve.
The invention have the benefit that
1. can avoid maloperation.Individually operated manual throttle flow speed control valve or get on the bus control banked direction control valves time, high-altitude operation vehicle is got on the bus
Attonity；Operate the most simultaneously manual throttle grverning valve and get on the bus control banked direction control valves time, high-altitude operation vehicle is got on the bus could action.Have
Preventing of effect uses the maloperation occurred during high-altitude operation vehicle.
2., by arranging manual throttle flow speed control valve at turntable and platform, turntable and work platforms of getting on the bus can be separately implemented at
The speed controlling that work high above the ground is got on the bus.Control valve of getting on the bus is that solenoid directional control valve group is placed in turning table control cabinet, when get off or on
Car handle time, be all by electrical control get on the bus control valve commutate.When controlling platform operations when getting off, by operation turning table control
The automatically controlled button of control valve of getting on the bus of cabinet, controls control valve commutation of getting on the bus, and regulation simultaneously is positioned at the manual turntable joint of turning table control cabinet
Stream flow speed control valve openings of sizes, carries out high-altitude operation vehicle and gets on the bus action.When get on the bus work platforms operation time, got on the bus work by operation
The automatically controlled button of control valve of getting on the bus of platform, regulation simultaneously is positioned at the manual platform throttle grverning valve openings of sizes of work platforms, enters
Row high-altitude operation vehicle is got on the bus action.
3. use the control valve of getting on the bus of electrical control to be combined with manual throttle flow speed control valve, there is the feature of low cost.Wherein
Control valve of getting on the bus and manual turntable throttle grverning valve are positioned at turning table control cabinet, and manual platform throttle grverning valve is positioned at work of getting on the bus puts down
Platform, decreases the pipeline of work platforms of getting on the bus.In addition manual throttle speed governing relative scale flow speed control valve, with low cost.
4., by arranging unloading electromagnetic valve in control valve outlet of getting off, shorten return line, reduce the pressure loss.When two
Position threeway hand-operated direction valve 6-2 is transformed into after getting on the bus, when control banked direction control valves of getting on the bus does not operates, under the fluid of hydraulic system can pass through
The direct oil sump tank of car electromagnetism load releasing valve 18, shortens oil return circuit, reduces the pressure unloading of system, decreases the heating of system.
Accompanying drawing explanation
Fig. 1 is the hydraulic schematic diagram of the present invention.
Reference:
1 fuel tank；2 return filters；3 hydraulic pumps；4 donkey pumps；5 high pressure filters；6 get off control banked direction control valves；6-1 two-position three way
Valve；6-2 supporting leg control valve group；7 two-way shut-off valve；8 bidirectional hydraulic locks；9 horizontal support legs oil cylinders；10 vertical support oil cylinders；11-1
Manual turntable throttle grverning valve；11-2 manual platform throttle grverning valve；12 get on the bus control banked direction control valves；13 upper-part rotation loops；13-
1 rotary motor；14 underarm luffing loops；14-1 underarm luffing balanced valve；14-2 underarm luffing hydraulic cylinder；15 upper arm luffings return
Road；15-1 upper arm luffing balanced valve；15-2 upper arm luffing hydraulic cylinder；16 winch lifting loops；16-1 one-way balance valve；16-2 twists
Vehicle and horse reach；17 crane arms stretch loop；17-1 one-way balance valve；17-2 crane arm telescopic oil cylinder；18 unloading electromagnetic valves.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings.Following example are only used for clearly illustrating the present invention
Technical scheme, and can not limit the scope of the invention with this.
As it is shown in figure 1, a kind of adapt to for high-altitude operation vehicle get on or off the bus handle hydraulic control system be specifically configured to: oil
Case 1, return filter 2, hydraulic pump 3, donkey pump 4, high pressure filter 5, control banked direction control valves 6 of getting off, two-way shut-off valve 7, two-way
Hydraulic lock 8, horizontal support legs oil cylinder 9, vertical support oil cylinder 10, manual turntable throttle grverning valve 11-1, manual platform throttle grverning
Valve 11-2, control banked direction control valves 12 of getting on the bus, upper-part rotation loop 13, underarm luffing loop 14, upper arm luffing loop 15, winch lifting
Loop 16 and crane arm stretch loop 17 and electromagnetism load releasing valve 18.
This hydraulic control system, is provided power by hydraulic pump 3 and/or donkey pump 4, is transported to by check valve by pressure oil
Get off and control banked direction control valves 6.
Described control banked direction control valves 6 of getting off, including two position three way directional control valve 6-1 and supporting leg control valve group 6-2.Two-position three way
First oil-out of valve is connected with the oil-in of supporting leg control valve group, and its second oil-out is through working connection and control banked direction control valves of getting on the bus
Oil-in connect, its oil recirculating port connecting tank.
Described two position three way directional control valve 6-1, is divided into upper vehicle control and lower vehicle control two by hydraulic system
Point, make vehicle control and lower vehicle control realize interlock function.During the upper work of two position three way directional control valve 6-1, will pressure
Power oil is transported to vehicle control, i.e. get on the bus control banked direction control valves and each executive component of getting on the bus；During the next work, by pressure oil
It is transported to lower vehicle control, i.e. get off control banked direction control valves and each executive component of getting off.
Described upper vehicle control, including by-pass throttle valve group, get on the bus control banked direction control valves 12 and executive component of getting on the bus.
By-pass throttle valve group is connected on to realizing on the working connection controlling banked direction control valves fuel feeding of getting on the bus controlling banked direction control valves to getting on the bus
Shunting speed governing, it includes manual turntable throttle grverning valve 11-1 and manual platform throttle grverning valve 11-2.Described manual turntable
Throttle grverning valve 11-1 is positioned at turning table control cabinet, it is simple to staff carries out speed controlling at turntable to the system of getting on the bus.Described
Manual platform throttle grverning valve 11-2 is positioned at work platforms, it is simple to the system of getting on the bus is carried out by staff when work platforms operates
Speed controlling.
Described unloading electromagnetic valve 18 connects the second oil-out and the oil return opening of two-bit triplet reversal valve 6-1, when control of getting on the bus
During banked direction control valves 12 dead electricity attonity processed, unloading electromagnetic valve 18 dead electricity, fluid passes through the direct oil sump tank of unloading electromagnetic valve 18.When getting on the bus
When control banked direction control valves 12 obtains electric work, unloading electromagnetic valve 18 obtains electric, and fluid is got on the bus through revolution allotter arrival, by control hands
The opening degree of dynamic turntable throttle grverning valve 11-1 or manual platform throttle grverning valve 11-2 changes entrance and gets on the bus control multichannel
The flow of valve 12.
Described control banked direction control valves 12 of getting on the bus has driving outlet A1 and B1, driving mouth A2 and B2, driving mouth A3 and B3, driving
Mouth A4 and B4, driving mouth A5 and B5.
First group drives mouth A1 and B1 to connect rotation of rotary table motor 13-1, forms above-mentioned rotation of rotary table loop 13.
Second group drives mouth A2 and B2 to connect underarm luffing balanced valve 14-1 and underarm luffing hydraulic cylinder 14-2, forms above-mentioned
Underarm luffing loop 14.
3rd group drives mouth A3 and B3 to connect upper arm luffing balanced valve 15-1 and upper arm luffing hydraulic cylinder 15-2, forms above-mentioned
Upper arm luffing loop 15.
The 4th group of loop of winch lifting drives mouth A4 and B4 to connect one-way balance valve 16-1 and winch motor 16-2, on composition
State winch lifting loop 16.
5th group drives mouth A5 and B5 to connect one-way balance valve 17-1 and crane arm telescopic oil cylinder 17-2, forms above-mentioned lifting
Arm stretches loop 17.
Described lower vehicle control, including supporting leg control valve group 6-2 and executive component of getting off.
Supporting leg control valve group 6-2 has many groups and drives mouth a1 and b1, driving mouth a2 and b2, driving mouth a3 and b3, driving mouth
A4 and b4 and driving mouth H.
Mouth a1 and b1, driving mouth a2 and b2, driving mouth a3 and b3 and driving mouth a4 and b4 is driven to connect level respectively and prop up
Lower limb oil cylinder and the big chamber of vertical support oil cylinder, drive mouth H by two-way shut-off valve 7 respectively with horizontal support legs oil cylinder and vertical leg
The loculus of oil cylinder connects.
When two-way shut-off valve 7 obtains electric, cut off the public oil circuit of support oil cylinder loculus.When get on the bus work time, if getting off appearance
During maloperation, support oil cylinder oil circuit is locked out, and is effectively protected staff and the safety of equipment on high-altitude operation vehicle.
Control to be connected on banked direction control valves 12 and the oil return circuit controlled between banked direction control valves 6 and fuel tank 1 of getting off have oil return getting on the bus
Filter 2.
The operation principle of the present invention and process
During high-altitude operation vehicle drive-through operation, first operation two-bit triplet reversal valve 6-1 so that it is the next work, now pressure oil circuit
Communicate with supporting leg control valve 6-2.Landing leg stretching is controlled by supporting leg control valve 6-2.
High-altitude operation vehicle is got on the bus when operating, first operation two-bit triplet reversal valve 6-1 so that it is upper work, then passes through
Operation is got on the bus and is controlled that the different commutation connection of banked direction control valves 12 control rotary loop respectively, underarm luffing loop, upper arm luffing return
Road, winch lifting loop and flexible loop.When the work controlling banked direction control valves 12 of getting on the bus joins electric, unloading electromagnetic valve 18
Electricity, oil circuit is through manual turntable throttle grverning valve 11-1, manual platform throttle grverning valve 11-2 and control banked direction control valves 12 of getting on the bus.This
Time by operation manual turntable throttle grverning valve 11-1 or manual platform throttle grverning valve 11-2, control enter control loop
Flow, reach speed-regulating function.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For Yuan, on the premise of without departing from the technology of the present invention principle, it is also possible to make some improvement and deformation, these improve and deformation
Also should be regarded as protection scope of the present invention.
Claims (10)
1. adapting to get on or off the bus the hydraulic control system handled for high-altitude operation vehicle, including pump group, connecting gets on the bus performs unit
The control banked direction control valves of getting on the bus of part, and connect the control banked direction control valves of getting off of executive component of getting off；Control banked direction control valves of getting off includes two
Position three-way valve and supporting leg control valve group, the first oil-out of two position three-way valve is connected with the oil-in of supporting leg control valve group, and it is years old
Two oil-outs are connected with the oil-in controlling banked direction control valves of getting on the bus through working connection, its oil recirculating port connecting tank；On two position three way directional control valve
During the work of position, control banked direction control valves that the pressure oil that pump group exports is transported to get on the bus to control to get on the bus executive component, its next work
Time, the pressure oil that pump group exports is transported to supporting leg control valve group to control to get off executive component；It is characterized in that: also include:
By-pass throttle valve group, is connected on and realizes the shunting controlling banked direction control valves of getting on the bus on the working connection controlling banked direction control valves fuel feeding of getting on the bus
Speed governing；
Electromagnetic relief valve, its second oil-out being connected to two position three-way valve and oil return opening, for system unloaded.
A kind of adaptation the most according to claim 1 is got on or off the bus the hydraulic control system handled for high-altitude operation vehicle, and it is special
Levy and be: pump group has high pressure filter with getting off to be connected between control banked direction control valves.
A kind of adaptation the most according to claim 1 is got on or off the bus the hydraulic control system handled for high-altitude operation vehicle, and it is special
Levy and be: also include the return filter being arranged on oil return circuit.
A kind of adaptation the most according to claim 1 is got on or off the bus the hydraulic control system handled for high-altitude operation vehicle, and it is special
Levy and be: executive component of getting on the bus include being connected to getting on the bus control banked direction control valves often organize the rotation of rotary table loop driven on mouth, under
Arm luffing loop, upper arm luffing loop, winch lifting loop and crane arm stretch loop.
A kind of adaptation the most according to claim 4 is got on or off the bus the hydraulic control system handled for high-altitude operation vehicle, and it is special
Levy and be: rotation of rotary table loop includes being connected to first group of rotary motor driven on mouth；Underarm luffing loop includes being connected to
Second group of underarm luffing balanced valve driven on mouth and underarm luffing hydraulic cylinder；Upper arm luffing loop includes that being connected to the 3rd group drives
Upper arm luffing balanced valve on opening one's mouth and upper arm luffing hydraulic cylinder；Winch lifting loop includes that being connected to the 4th group drives on mouth
One-way balance valve and winch motor；Crane arm loop of stretching includes being connected to the 5th group of one-way balance valve driven on mouth and lifting
Arm telescopic oil cylinder.
A kind of adaptation the most according to claim 1 is got on or off the bus the hydraulic control system handled for high-altitude operation vehicle, and it is special
Levy and be: executive component of getting off includes that being connected to supporting leg control valve often organizes the horizontal support legs oil cylinder on driving mouth and vertically prop up
Lower limb oil cylinder.
A kind of adaptation the most according to claim 6 is got on or off the bus the hydraulic control system handled for high-altitude operation vehicle, and it is special
Levy and be: a group of supporting leg control valve group drives the mouth big chamber respectively with horizontal support legs oil cylinder and vertical support oil cylinder to be connected, separately
One group of driving mouth passes through the two-way shut-off valve loculus respectively with horizontal support legs oil cylinder and vertical support oil cylinder and is connected.
A kind of adaptation the most according to claim 6 is got on or off the bus the hydraulic control system handled for high-altitude operation vehicle, and it is special
Levy and be: connect respectively and be additionally provided with bidirectional hydraulic lock on the big chamber of vertical support oil cylinder and the oil circuit of loculus.
A kind of adaptation the most according to claim 1 is got on or off the bus the hydraulic control system handled for high-altitude operation vehicle, and it is special
Levy and be: pump group includes the hydraulic pump providing hydraulic power in parallel and donkey pump.
A kind of adaptation the most according to claim 1 is got on or off the bus the hydraulic control system handled for high-altitude operation vehicle, and it is special
Levy and be: by-pass throttle valve group includes the manual turntable throttle grverning valve of series connection and manual platform throttle grverning valve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610774935.4A CN106185737B (en) | 2016-08-31 | 2016-08-31 | It is a kind of to adapt to the hydraulic control system of manipulation of getting on or off the bus for high-altitude operation vehicle |
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|---|---|---|---|
| CN201610774935.4A CN106185737B (en) | 2016-08-31 | 2016-08-31 | It is a kind of to adapt to the hydraulic control system of manipulation of getting on or off the bus for high-altitude operation vehicle |
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| CN106185737B CN106185737B (en) | 2019-08-09 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109236766A (en) * | 2018-10-10 | 2019-01-18 | 湖北先行专用汽车有限公司 | A kind of side fork lifts formula and removes obstacles vehicle hydraulic system |
| CN109372811A (en) * | 2018-12-07 | 2019-02-22 | 朱浩 | A kind of hydraulic system for high-altitude operation vehicle |
| CN109973455A (en) * | 2019-03-20 | 2019-07-05 | 中煤科工集团重庆研究院有限公司 | Multistage series-parallel connection accurate speed regulation hydraulic system |
| CN110985464A (en) * | 2019-12-30 | 2020-04-10 | 徐州海伦哲特种车辆有限公司 | Automatic interlocking control system for getting on and off of overhead working truck and control method thereof |
| CN111857007A (en) * | 2020-07-30 | 2020-10-30 | 徐州徐工随车起重机有限公司 | Arm support control circuit suitable for folding arm type overhead working truck |
| CN113803309A (en) * | 2021-09-13 | 2021-12-17 | 徐州徐工随车起重机有限公司 | Energy-saving type high-altitude operation vehicle getting-on and getting-off interlocking system and control method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109236766A (en) * | 2018-10-10 | 2019-01-18 | 湖北先行专用汽车有限公司 | A kind of side fork lifts formula and removes obstacles vehicle hydraulic system |
| CN109236766B (en) * | 2018-10-10 | 2024-03-26 | 湖北先行专用汽车有限公司 | Hydraulic system of lateral fork lift type wrecker |
| CN109372811A (en) * | 2018-12-07 | 2019-02-22 | 朱浩 | A kind of hydraulic system for high-altitude operation vehicle |
| CN109372811B (en) * | 2018-12-07 | 2024-04-05 | 朱浩 | Hydraulic system for overhead working truck |
| CN109973455A (en) * | 2019-03-20 | 2019-07-05 | 中煤科工集团重庆研究院有限公司 | Multistage series-parallel connection accurate speed regulation hydraulic system |
| CN109973455B (en) * | 2019-03-20 | 2020-08-04 | 中煤科工集团重庆研究院有限公司 | Multistage series-parallel connection accurate speed regulation hydraulic system |
| CN110985464A (en) * | 2019-12-30 | 2020-04-10 | 徐州海伦哲特种车辆有限公司 | Automatic interlocking control system for getting on and off of overhead working truck and control method thereof |
| CN111857007A (en) * | 2020-07-30 | 2020-10-30 | 徐州徐工随车起重机有限公司 | Arm support control circuit suitable for folding arm type overhead working truck |
| CN111857007B (en) * | 2020-07-30 | 2021-07-20 | 徐州徐工随车起重机有限公司 | Arm support control circuit suitable for folding arm type overhead working truck |
| CN113803309A (en) * | 2021-09-13 | 2021-12-17 | 徐州徐工随车起重机有限公司 | Energy-saving type high-altitude operation vehicle getting-on and getting-off interlocking system and control method thereof |
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|---|---|
| CN106185737B (en) | 2019-08-09 |
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