CN106005000A - Hydraulic steering control system - Google Patents
Hydraulic steering control system Download PDFInfo
- Publication number
- CN106005000A CN106005000A CN201610399598.5A CN201610399598A CN106005000A CN 106005000 A CN106005000 A CN 106005000A CN 201610399598 A CN201610399598 A CN 201610399598A CN 106005000 A CN106005000 A CN 106005000A
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- Prior art keywords
- oil
- solenoid directional
- valve
- directional control
- control valve
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/08—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by type of steering valve used
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/09—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by means for actuating valves
- B62D5/091—Hydraulic steer-by-wire systems, e.g. the valve being actuated by an electric motor
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Power Steering Mechanism (AREA)
Abstract
The invention discloses a hydraulic steering control system which comprises a steering oil cylinder set, a steering control valve set, a proportional directional spool valve, a pump set, an oil tank and a control mechanism. The pump set is connected with the oil tank. According to the control system, the wheel distance of wheel type traveling equipment can be adjusted, and the effect that the directions of different wheels are identical is guaranteed; and an independent steering control function is achieved, the control system is suitable for bridgeless connection occasions, the steering system is provided with a steering gear and a mechanical connecting rod mechanism, and the structure is simple.
Description
Technical field
The present invention relates to steering control system, particularly relate to a kind of fluid-link steering control system.
Background technology
The fluid-link steering function of the running on wheels equipment used in engineering machinery, agricultural machinery and mining machinery at present, is all to drive switching valve with steering gear, and switching valve is to steering cylinder fuel feeding, and steering cylinder drives propons or back axle to realize wheel steering.Because wheel is connect by bridging, for being mechanically connected, two wheels synchronize to turn to.Some occasion, in order to adapt to different road surface operating modes, needing each wheel band independent steering and wheel to land can not be at the walking arrangement of same level height, such as walking type excavator.Walking type excavator has four supporting legs, can adjust supporting leg attitude according to complicated mountain region operating mode, river course operating mode etc., and the wheel spacing of its two wheel or four wheel steering oil cylinders is adjustable.As general bridge-type connects the running on wheels equipment that band steering gear controls, between-wheel spacing is uncomfortable.After walking type excavator supporting leg wheel spacing is adjustable, but existing major part walking excavating machine adjusts wheel spacing, four wheel directions, it cannot be guaranteed that be just as, can be caused wheel Fast Wearing, and are not suitable for quickly walking.
Summary of the invention
For solving above-mentioned technical problem, it is an object of the invention to provide a kind of energy and control the fluid-link steering control system that each wheel individually turns to and the synchronization of many wheels turns to.
For achieving the above object, the present invention is by the following technical solutions:
A kind of fluid-link steering control system, it includes steering cylinder group, steering control valve group, proportional multi-way valve, pump group, fuel tank and controlling organization, and pump group is connected with fuel tank；
Described steering cylinder group includes that the first steering cylinder and the second steering cylinder, the first steering cylinder and the second steering cylinder independently drive a wheel steering；
Described steering control valve group includes the first solenoid directional control valve and the second solenoid directional control valve being three-position four-way electromagnetic directional valve, the oil inlet P 1 of described first solenoid directional control valve is connected with pump group, the oil return inlet T 1 of the first solenoid directional control valve is connected with fuel tank, one oil-out A1 of the first solenoid directional control valve and the rod chamber of the first steering cylinder connect, and another oil-out B1 of the first solenoid directional control valve and the rodless cavity of the first steering cylinder connect；The oil inlet P 2 of described second solenoid directional control valve is connected with pump group, the oil return inlet T 2 of the second solenoid directional control valve is connected with fuel tank, one oil-out A2 of the second solenoid directional control valve and the rodless cavity of the second steering cylinder connect, and another oil-out B2 of the second solenoid directional control valve and the rod chamber of the second steering cylinder connect；The oil-out A1 of the first solenoid directional control valve and the oil-out B2 of the second solenoid directional control valve communicates；
The oil inlet P 3 of described proportional multi-way valve is connected with pump group, the oil return inlet T 3 of proportional multi-way valve is connected with fuel tank, one oil-out A3 of proportional multi-way valve and the rodless cavity of the first steering cylinder connect, and another oil-out B3 of proportional multi-way valve and the rodless cavity of the second steering cylinder connect；
Described controlling organization is connected with the first solenoid directional control valve, the second solenoid directional control valve and proportional multi-way valve respectively, and controlling organization controls the solenoid break-make of the first solenoid directional control valve and the second solenoid directional control valve to control the first steering cylinder and the action of the second steering cylinder respectively；Described controlling organization controls the wheel that the spool of proportional multi-way valve moves to control the first steering cylinder and the second steering cylinder is driven and synchronizes to turn to.
Described controlling organization is the pilot handle of hydraulically-controlled type, and this pilot handle is integrated with the control knob of solenoid break-make for controlling the first solenoid directional control valve and the second solenoid directional control valve respectively；One oil-out L of described pilot handle is connected with pilot control opening a of proportional multi-way valve, and another oil-out R of pilot handle is connected with another pilot control opening b of proportional multi-way valve；Described pump group includes the first pump and the second pump, the oil-in of the first pump and the second pump is all connected with fuel tank, the oil-out of described first pump is connected with the oil inlet P 2 of oil inlet P the 1, second solenoid directional control valve and the oil inlet P 3 of proportional multi-way valve of the first solenoid directional control valve respectively, the oil inlet P 4 of described pilot handle is connected with the oil-out of the second pump, and the oil return inlet T 4 of pilot handle is connected with fuel tank.
The oil-out of described first pump connects the first overflow valve, and the oil-out of described second pump connects the second overflow valve.
Described controlling organization includes electric control handle and electric controller, electric control handle is connected with electric controller, be integrated with the control knob of solenoid break-make for controlling the first solenoid directional control valve and the second solenoid directional control valve respectively on electric control handle, electric controller be connected with proportional multi-way valve and control proportional multi-way valve dead electricity moves to control its spool；Described pump group is the first pump, and the oil-in of the first pump is connected with fuel tank, and the oil-out of the first pump is connected with the oil inlet P 2 of oil inlet P the 1, second solenoid directional control valve and the oil inlet P 3 of proportional multi-way valve of the first solenoid directional control valve respectively.
The oil-out of described first pump connects the first overflow valve.
Described proportional multi-way valve is load-sensitive proportional multi-path reversing valve.
Described first steering cylinder is provided with the first hydraulic lock, and the first hydraulic lock is two the first check valve combinations, and one of them the first check valve connects the rodless cavity of the first steering cylinder, and another the first check valve connects the rod chamber of the first steering cylinder.
Described second steering cylinder is provided with the second hydraulic lock, and the second hydraulic lock is two the second check valve combinations, and one of them the second check valve connects the rodless cavity of the second steering cylinder, and another the second check valve connects the rod chamber of the second steering cylinder.
The present invention uses above technical scheme, has the advantage that
1, the control system of the present invention be capable of running on wheels equipment wheel spacing adjustable, it is ensured that different wheel directions is consistent；There is independent control turning function, it is adaptable to the occasion that no bridge type connects, steering does not has steering gear and mechanical linkage, simple in construction.
2, a steering cylinder in the present invention connects a wheel, and wheel both can individually turn to, it is also possible to linked steering.In the case of the appearance of different wheel steering direction is inconsistent, can individually turn to adjustment by single wheel, be achieved in the linked steering that walking synchronizes to turn to.
3, the present invention controls to turn to by pilot handle or electric control handle, handles steering force little, and comfortableness is high, handling good.
4. the present invention uses synchronization ratio of turning to control, and can according to circumstances control turning velocity, have strong operability in fact.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further details；
Fig. 1 is the schematic diagram of fluid-link steering control system embodiment 1 of the present invention；
Fig. 2 is the schematic diagram of fluid-link steering control system embodiment 2 of the present invention.
Detailed description of the invention
As shown in Figure 1 or 2, the present invention includes steering cylinder group, steering control valve group 3, proportional multi-way valve 4, pump group 7, fuel tank 9 and controlling organization, and pump group 7 is connected with fuel tank 9；
Steering cylinder group includes that the first steering cylinder 1 and the second steering cylinder 2, the first steering cylinder 1 and the second steering cylinder 2 independently drive a wheel steering；
Steering control valve group 3 includes the first solenoid directional control valve 31 and the second solenoid directional control valve 32 being three-position four-way electromagnetic directional valve, the oil inlet P 1 of the first solenoid directional control valve 31 is connected with pump group 7, the oil return inlet T 1 of the first solenoid directional control valve 31 is connected with fuel tank 9, one oil-out A1 of the first solenoid directional control valve 31 and the rod chamber of the first steering cylinder 1 connect, and another oil-out B1 of the first solenoid directional control valve 31 and the rodless cavity of the first steering cylinder 1 connect；The oil inlet P 2 of the second solenoid directional control valve 32 is connected with pump group 7, the oil return inlet T 2 of the second solenoid directional control valve 32 is connected with fuel tank 9, one oil-out A2 of the second solenoid directional control valve 32 and the rodless cavity of the second steering cylinder 2 connect, and another oil-out B2 of the second solenoid directional control valve 32 and the rod chamber of the second steering cylinder 2 connect；The oil-out A1 of the first solenoid directional control valve 31 and oil-out B2 of the second solenoid directional control valve 32 communicates；
Proportional multi-way valve 4 is load-sensitive proportional multi-path reversing valve, the oil inlet P 3 of proportional multi-way valve 4 is connected with pump group 7, the oil return inlet T 3 of proportional multi-way valve 4 is connected with fuel tank 9, one oil-out A3 of proportional multi-way valve 4 and the rodless cavity of the first steering cylinder 1 connect, and another oil-out B3 of proportional multi-way valve 4 and the rodless cavity of the second steering cylinder 2 connect；
Controlling organization is connected with first solenoid directional control valve the 31, second solenoid directional control valve 32 and proportional multi-way valve 4 respectively, and controlling organization controls the solenoid break-make of the first solenoid directional control valve 31 and the second solenoid directional control valve 32 to control the first steering cylinder 1 and action of the second steering cylinder 2 respectively；Controlling organization controls the wheel that the spool of proportional multi-way valve 4 moves to control the first steering cylinder 1 and the second steering cylinder 2 is driven and synchronizes to turn to.
First steering cylinder 1 is provided with the first hydraulic lock 11, and the first hydraulic lock 11 is two the first check valve combinations, and one of them first check valve connects the rodless cavity of the first steering cylinder 1, and another first check valve connects the rod chamber of the first steering cylinder 1.Second steering cylinder 2 is provided with the second hydraulic lock 21, and the second hydraulic lock 21 is two the second check valve combinations, and one of them second check valve connects the rodless cavity of the second steering cylinder 2, and another second check valve connects the rod chamber of the second steering cylinder 2.First check valve and the second check valve can be hydraulic control one-way valves.
Embodiment 1: as shown in Figure 1, controlling organization is the pilot handle 5 of hydraulically-controlled type, this pilot handle 5 is direct proportion air relief valve, its operation principle is that output pressure increases along with the increase of pilot handle 5 pivot angle, output pressure is the biggest, and the pilot control opening pressure reduction at proportional multi-way valve 4 two ends is the biggest, and the valve core opening of proportional multi-way valve 4 is the biggest, the flow of passing ratio banked direction control valves 4 is the most, and the flow entering two steering cylinders is the most.The turning velocity of wheel is directly proportional to the pivot angle of pilot handle 5.It addition, be integrated with the control knob of the solenoid break-make for controlling the first solenoid directional control valve 31 and the second solenoid directional control valve 32 respectively on pilot handle 5；One oil-out L of pilot handle 5 is connected with pilot control opening a of proportional multi-way valve 4, and another oil-out R of pilot handle 5 is connected with another pilot control opening b of proportional multi-way valve 4；Pump group 7 includes the first pump 71 and the second pump 72, first pump 71 provides power to steering control valve group 3, proportional multi-way valve 4, first pump 71 can be load-reacting pump, it can also be dosing pump, the oil-in of the first pump 71 and the second pump 72 is all connected with fuel tank 9, and the oil-out of the first pump 71 is connected with the oil inlet P 2 of oil inlet P the 1, second solenoid directional control valve 32 and the oil inlet P 3 of proportional multi-way valve 4 of the first solenoid directional control valve 31 respectively.Second pump 72 provides power to pilot handle 5, second pump 72 is dosing pump, the oil inlet P 4 of pilot handle 5 is connected with the oil-out of the second pump 72, the oil return inlet T 4 of pilot handle 5 is connected with fuel tank 9, the oil-out of the first pump 71 connects the first overflow valve 8, and the oil-out of the second pump 72 connects the second overflow valve 6.First overflow valve 8 and the second overflow valve 6 start the effect of overflow protection.
In this example 1, after pump group 7 starts, button on operated pilot handle 5, make the first solenoid directional control valve 31 left side solenoid energising, first solenoid directional control valve 31 is in the work of left position, hydraulic oil enters the oil inlet P 1 of the first solenoid directional control valve 31 from the first pump 71 oil-out, the rodless cavity of the first steering cylinder 1 is entered from the oil-out B1 of the first solenoid directional control valve 31, piston rod stretches out, realizing single wheel to turn left, the hydraulic oil of the rod chamber of the first steering cylinder 1 flows back to fuel tank 9 through the oil return inlet T 1 of the first solenoid directional control valve 31.Button on operated pilot handle 5, make solenoid energising on the right of the first solenoid directional control valve 31, first solenoid directional control valve 31 is in the work of right position, hydraulic oil enters the oil inlet P 1 of the first solenoid directional control valve 31 from the first oil pump 71 oil-out, the rod chamber of the first steering cylinder 1 is entered from the oil-out A1 of the first solenoid directional control valve 31, piston rod is retracted, it is achieved single wheel is turned right, and the hydraulic oil of the rodless cavity of the first steering cylinder 1 flows back to fuel tank 9 through the oil return inlet T 1 of the first solenoid directional control valve 31.In like manner, when the second solenoid directional control valve 32 left side solenoid energising, second solenoid directional control valve 32 is in the work of left position, hydraulic oil enters the oil inlet P 2 of the second solenoid directional control valve 32 from the oil-out of the first pump 71, the rod chamber of the second steering cylinder 2 is entered from the oil-out B2 of the second solenoid directional control valve 32, piston rod is retracted, it is achieved single wheel is turned left, and the hydraulic oil of the rodless cavity of the second steering cylinder 2 flows back to fuel tank 9 through the oil return inlet T 2 of the second solenoid directional control valve 32.Button on operated pilot handle 5, make solenoid energising on the right of the second solenoid directional control valve 32, second solenoid directional control valve 32 is in the work of right position, hydraulic oil enters the oil inlet P 2 of the second solenoid directional control valve 32 from the first pump 71 oil-out, the rodless cavity of the second steering cylinder 2 is entered from the oil-out A2 of the second solenoid directional control valve 32, piston rod stretches out, it is achieved single wheel is turned right, and the hydraulic oil of the rod chamber of the second steering cylinder 2 flows back to fuel tank 9 through the oil return inlet T 2 of the second solenoid directional control valve 32.When the button of not operated pilot handle 5, the first solenoid directional control valve 31 and the second solenoid directional control valve 32 are in power-off transition, the first steering cylinder 1 and the second steering cylinder 2 and are in stopping pressurize under the effect of the first hydraulic lock 11 and the second hydraulic lock 21 and do not turn to transition.
After pump group 7 starts, when not having left and right directions to pull pilot handle 5, pilot control opening a of proportional multi-way valve group 4, b are connected with fuel tank 9 by the oil return inlet T 4 of pilot handle 5.nullTurn left when operated pilot handle 5 and pull，One oil-out L of pilot handle 5 is fuel-displaced，Enter pilot control opening a of proportional multi-way valve 4，The pressure reduction at proportion of utilization banked direction control valves 4 spool two ends promotes spool to move，Proportional multi-way valve 4 is made to be in the work of left position，Hydraulic oil enters the oil inlet P 3 of proportional multi-way valve 4 from the first oil pump 71 oil-out，An oil-out A3 from proportional multi-way valve 4 enters the rodless cavity of the first steering cylinder 1，Its piston rod stretches out，Because the oil-out A1 of the first solenoid directional control valve 31 and oil-out B2 of the second solenoid directional control valve 32 communicates，Hydraulic oil is discharged from the rod chamber of the first steering cylinder 1，Enter the rod chamber of the second steering cylinder 2，Its piston rod is promoted to retract，Hydraulic oil is discharged from the rodless cavity of the second steering cylinder 2，Enter the oil-out B3 of proportional multi-way valve 4，Fuel tank 9 is returned to from the oil return inlet T 4 of proportional multi-way valve 4.First steering cylinder 1 piston rod stretches out, and the second steering cylinder 2 piston rod is retracted simultaneously, promotes steered wheel toward left side deviation angle, it is achieved to turn to the left simultaneously.In like manner, turn right when operated pilot handle 5 and pull, one oil-out R of pilot handle 5 is fuel-displaced, enter pilot control opening b of proportional multi-way valve 4, the pressure reduction at proportion of utilization banked direction control valves 4 spool two ends promotes spool to move, proportional multi-way valve 4 is made to be in the work of right position, hydraulic oil enters the oil inlet P 3 of proportional multi-way valve 4 from the first pump 71 oil-out, the rodless cavity of the second steering cylinder 2 is entered from the oil-out B3 of proportional multi-way valve 4, its piston rod stretches out, hydraulic oil is discharged from the rod chamber of the second steering cylinder 2, enter the rod chamber of the first steering cylinder 1, its piston rod is promoted to retract, hydraulic oil is discharged from the rodless cavity of the first steering cylinder 1, enter the oil-out A3 of proportional multi-way valve 4, fuel tank 9 is returned to from the oil return inlet T 4 of proportional multi-way valve 4.First steering cylinder 1 piston rod is retracted, and the second steering cylinder 2 piston rod stretches out simultaneously, promotes steered wheel toward the right deviation angle, it is achieved to turn to the right simultaneously.
Embodiment 2: as shown in Figure 2, on the basis of embodiment 1, proportional multi-way valve 4 uses automatically controlled replacement hydraulic control, and pilot handle 5 uses electric control handle to replace hydraulic control, owing to embodiment 2 does not use the pilot handle of hydraulic control, therefore it is no longer necessary to the second pump and the second overflow valve participation work；Power source can realize required function only with the first pump 71 in embodiment 1, specific as follows, controlling organization includes electric control handle 5 ' and electric controller 10, electric control handle 5 ' is connected with electric controller 10, be integrated with the control knob of solenoid break-make for controlling the first solenoid directional control valve 31 and the second solenoid directional control valve 32 respectively on electric control handle 5 ', electric controller 10 be connected with proportional multi-way valve 4 and control proportional multi-way valve 4 dead electricity moves to control its spool；Pump group 7 is the first pump 71, the oil-in of the first pump 71 is connected with fuel tank 9, the oil-out of the first pump 71 is connected with the oil inlet P 2 of oil inlet P the 1, second solenoid directional control valve 32 and the oil inlet P 3 of proportional multi-way valve 4 of the first solenoid directional control valve 31 respectively, and the oil-out of the first pump 71 connects the first overflow valve 8.When electric control handle 5 ' is turned left and is pulled, it is achieved the wheel that the first steering cylinder 1 and the second steering cylinder 2 drive synchronizes to turn to the left, when electric control handle 5 ' is turned right and pulled, it is achieved the wheel that the first steering cylinder 1 and the second steering cylinder 2 drive synchronizes to turn to the right.Electric control handle 5 ' is analog output, and turning velocity is directly proportional to the pivot angle of electric control handle 5 ', other corresponding technique effect, and its specific implementation process is similar with above-described embodiment 1, does not repeats.
Claims (8)
1.
A kind of fluid-link steering control system, it is characterised in that: it includes steering cylinder group, steering control valve group, proportional multi-way valve, pump group, fuel tank and controlling organization, and pump group is connected with fuel tank；
Described steering cylinder group includes that the first steering cylinder and the second steering cylinder, the first steering cylinder and the second steering cylinder independently drive a wheel steering；
Described steering control valve group includes the first solenoid directional control valve and the second solenoid directional control valve being three-position four-way electromagnetic directional valve, the oil inlet P 1 of described first solenoid directional control valve is connected with pump group, the oil return inlet T 1 of the first solenoid directional control valve is connected with fuel tank, one oil-out A1 of the first solenoid directional control valve and the rod chamber of the first steering cylinder connect, and another oil-out B1 of the first solenoid directional control valve and the rodless cavity of the first steering cylinder connect；The oil inlet P 2 of described second solenoid directional control valve is connected with pump group, the oil return inlet T 2 of the second solenoid directional control valve is connected with fuel tank, one oil-out A2 of the second solenoid directional control valve and the rodless cavity of the second steering cylinder connect, and another oil-out B2 of the second solenoid directional control valve and the rod chamber of the second steering cylinder connect；The oil-out A1 of the first solenoid directional control valve and the oil-out B2 of the second solenoid directional control valve communicates；
The oil inlet P 3 of described proportional multi-way valve is connected with pump group, the oil return inlet T 3 of proportional multi-way valve is connected with fuel tank, one oil-out A3 of proportional multi-way valve and the rodless cavity of the first steering cylinder connect, and another oil-out B3 of proportional multi-way valve and the rodless cavity of the second steering cylinder connect；
Described controlling organization is connected with the first solenoid directional control valve, the second solenoid directional control valve and proportional multi-way valve respectively, and controlling organization controls the solenoid break-make of the first solenoid directional control valve and the second solenoid directional control valve to control the first steering cylinder and the action of the second steering cylinder respectively；Described controlling organization controls the wheel that the spool of proportional multi-way valve moves to control the first steering cylinder and the second steering cylinder is driven and synchronizes to turn to.
2.
A kind of fluid-link steering control system according to claim 1, it is characterized in that: described controlling organization is the pilot handle of hydraulically-controlled type, this pilot handle is integrated with the control knob of solenoid break-make for controlling the first solenoid directional control valve and the second solenoid directional control valve respectively；One oil-out L of described pilot handle is connected with pilot control opening a of proportional multi-way valve, and another oil-out R of pilot handle is connected with another pilot control opening b of proportional multi-way valve；Described pump group includes the first pump and the second pump, the oil-in of the first pump and the second pump is all connected with fuel tank, the oil-out of described first pump is connected with the oil inlet P 2 of oil inlet P the 1, second solenoid directional control valve and the oil inlet P 3 of proportional multi-way valve of the first solenoid directional control valve respectively, the oil inlet P 4 of described pilot handle is connected with the oil-out of the second pump, and the oil return inlet T 4 of pilot handle is connected with fuel tank.
A kind of fluid-link steering control system the most according to claim 2, it is characterised in that: the oil-out of described first pump connects the first overflow valve, and the oil-out of described second pump connects the second overflow valve.
4.
A kind of fluid-link steering control system according to claim 1, it is characterized in that: described controlling organization includes electric control handle and electric controller, electric control handle is connected with electric controller, be integrated with the control knob of solenoid break-make for controlling the first solenoid directional control valve and the second solenoid directional control valve respectively on electric control handle, electric controller be connected with proportional multi-way valve and control proportional multi-way valve dead electricity moves to control its spool；Described pump group is the first pump, and the oil-in of the first pump is connected with fuel tank, and the oil-out of the first pump is connected with the oil inlet P 2 of oil inlet P the 1, second solenoid directional control valve and the oil inlet P 3 of proportional multi-way valve of the first solenoid directional control valve respectively.
5.
A kind of fluid-link steering control system according to claim 4, it is characterised in that: the oil-out of described first pump connects the first overflow valve.
6. according to a kind of fluid-link steering control system described in claim 1 or 2 or 4, it is characterised in that: described proportional multi-way valve is load-sensitive proportional multi-path reversing valve.
A kind of fluid-link steering control system the most according to claim 1, it is characterized in that: described first steering cylinder is provided with the first hydraulic lock, first hydraulic lock is two the first check valve combinations, one of them the first check valve connects the rodless cavity of the first steering cylinder, and another the first check valve connects the rod chamber of the first steering cylinder.
A kind of fluid-link steering control system the most according to claim 1, it is characterized in that: described second steering cylinder is provided with the second hydraulic lock, second hydraulic lock is two the second check valve combinations, one of them the second check valve connects the rodless cavity of the second steering cylinder, and another the second check valve connects the rod chamber of the second steering cylinder.
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| CN201610399598.5A CN106005000B (en) | 2016-06-07 | 2016-06-07 | A kind of fluid-link steering control system |
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| CN201610399598.5A CN106005000B (en) | 2016-06-07 | 2016-06-07 | A kind of fluid-link steering control system |
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| CN106005000B CN106005000B (en) | 2018-04-20 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106828596A (en) * | 2017-03-03 | 2017-06-13 | 河南科技大学 | A kind of hydraulic steering system and the flexible wheel base vehicle using the system |
| CN108488121A (en) * | 2018-02-12 | 2018-09-04 | 宝鸡石油机械有限责任公司 | A kind of board migration device hydraulic pressure is from ambulation control method and control system |
| CN108791481A (en) * | 2018-05-29 | 2018-11-13 | 浙江万达汽车方向机股份有限公司 | Hydraulic steering road feel simulator assembly, simulation device and method |
| CN110094378A (en) * | 2019-06-12 | 2019-08-06 | 湖南科技大学 | A kind of polypody walking apparatus function interlock type electrichydraulic control device and method |
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| CN205661521U (en) * | 2016-06-07 | 2016-10-26 | 福建海山机械股份有限公司 | Hydraulic steering control system |
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Denomination of invention: A hydraulic steering control system Effective date of registration: 20210923 Granted publication date: 20180420 Pledgee: Putian Huangshi sub branch of Industrial Bank Co.,Ltd. Pledgor: FUJIAN HAISHAN MACHINERY Co.,Ltd. Registration number: Y2021980009722 |
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