CN207683594U - A kind of hydro-steering synchronous control system for fork truck - Google Patents
A kind of hydro-steering synchronous control system for fork truck Download PDFInfo
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- CN207683594U CN207683594U CN201721624679.7U CN201721624679U CN207683594U CN 207683594 U CN207683594 U CN 207683594U CN 201721624679 U CN201721624679 U CN 201721624679U CN 207683594 U CN207683594 U CN 207683594U
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Abstract
The utility model is related to a kind of hydro-steering synchronous control systems for fork truck.Including fuel tank, oil pump, flow stabilizing valve, steering overflow valve, all-hydraulic steering gear, check valve, steering cylinder, wheel steering angle potentiometer and steering wheel angle potentiometer；Further include the first compensation mechanism and the second compensation mechanism；First compensation mechanism includes the first solenoid valve and first throttle valve；Second compensation mechanism includes second solenoid valve and second throttle.When work, enter the size of the flow of steering cylinder left chamber by the first solenoid valve by first throttle valve regulation；The size for the flow for entering steering cylinder right chamber by second solenoid valve is adjusted by second throttle；According to the difference of wheel steering angle potentiometer and the corner of steering wheel angle potentiometer, determine that the work once electrified of the first solenoid valve and second solenoid valve or dead electricity are stopped.The utility model realizes the automatic amendment in forklift steering system direction, ensure that the consistency of steering wheel and steering wheel angle, increases the safety of fork truck traveling.
Description
Technical field
The utility model belongs to forklift steering system, and in particular to a kind of hydro-steering control system.
Background technology
Because steering gear is there are hydraulic leak, fork truck causes to turn to all hydraulic pressure steering-gear when carrying out steering operation
Take turns corner and the inconsistent problem of steering wheel angle.For example, common hydraulic steering system deflecting roller steering angle
When going to maximum value, due to the presence of leakage, steering wheel still can be to one side slip a distance of steering, and works as and return to straight line
When walking, certain deflection just has occurred in the relatively preceding straight line moving of corner of steering wheel.For this purpose, driver is in operation fork truck
In driving process, frequent manipulation direction disk just to can guarantee fork truck according to set direction running, driver's labor intensity is big, easily
Fatigue, the safety in fork truck driving process substantially reduce.
Utility model content
In order to solve the problems, such as that fork lift back wheel steering angle and steering wheel angle are inconsistent, the utility model provides a kind of use
In the hydro-steering synchronous control system of fork truck.The corner difference of wheel is compensated using hydraulic flow compensation, the side of making
Correspondence is formed to disk corner and wheel steering angle, to solve to turn to offset problem.
A kind of hydro-steering synchronous control system for fork truck includes fuel tank 1, oil pump 2, flow stabilizing valve 3, steering
Overflow valve 4, all-hydraulic steering gear 5, check valve 6 and steering cylinder 9；Right piston bar in 9 right working chamber of the steering cylinder
Overhanging end is equipped with wheel steering angle potentiometer 10；The all-hydraulic steering gear 5 is connected to steering wheel 14, institute by steering column
It states and is equipped with steering wheel angle potentiometer 13 between all-hydraulic steering gear 5 and steering wheel 14, steering wheel angle potentiometer 13 is with direction
Disk 14 rotates；
Further include the first compensation mechanism and the second compensation mechanism；
First compensation mechanism includes the first solenoid valve 7 and first throttle valve 8；
Second compensation mechanism includes second solenoid valve 12 and second throttle 11；
The a mouths of first solenoid valve 7 are connected to all-hydraulic turn with the a1 of second solenoid valve 12 mouth parallel connections by check valve 6
To the P oil inlets of device 5；
The first throttle valve 8 is connected on the b mouths of the first solenoid valve 7, and the outlet of first throttle valve 8 is respectively communicated with institute
State an actuator port of 9 left working chamber of steering cylinder and all-hydraulic steering gear 5；
The second throttle 11 is connected on the b1 mouths of second solenoid valve 12, and the outlet of second throttle 11 is respectively communicated with
An actuator port of 9 right working chamber of the steering cylinder and all-hydraulic steering gear 5；
When work, the size for entering 9 flow of steering cylinder by the first solenoid valve 7 is adjusted by first throttle valve 8；Pass through
Two throttle valves 11 adjust the size for entering 9 flow of steering cylinder by second solenoid valve 12；According to wheel steering angle potentiometer 10 and side
To the difference of the corner of disk corner potentiometer 13, determine that the work once electrified or dead electricity of the first solenoid valve 7 and second solenoid valve 12 are stopped
Only work.
The technical solution further limited is as follows：
First solenoid valve 7 and second solenoid valve 12 are 2/2-way solenoid valve.
The outlet of the first throttle valve 8 is respectively communicated with 9 left working chamber of the steering cylinder and complete by left three-way pipe 18
The L actuator ports of hydraulic steering gear 5.
The outlet of the second throttle 11 by right three-way pipe 19 be respectively communicated with 9 right working chamber of the steering cylinder and
The R actuator ports of all-hydraulic steering gear 5.
The advantageous effects of the utility model embody in the following areas：
1. the utility model is deviated by using the control of solenoid valve to solve fork-truck steering, forklift steering system is realized
The automatic amendment in direction ensure that the consistency of steering wheel and steering wheel angle, improves sense of direction when driver turns to, increases
Safety in fork truck driving process.
2. being automatically controlled using solenoid valve realization, operation is comfortable, improves work efficiency.
3. using external solenoid valve and throttle valve, simple in structure, convenient to install and maintain, compact appearance, good manufacturability, cost
It is low.
Description of the drawings
FIG. 1 is a schematic structural view of the utility model.
Serial number in upper figure：Fuel tank 1, oil pump 2, flow stabilizing valve 3, steering overflow valve 4, all-hydraulic steering gear 5, check valve 6,
First solenoid valve 7, first throttle valve 8, steering cylinder 9, wheel steering angle potentiometer 10, second throttle 11, second solenoid valve 12,
Steering wheel angle potentiometer 13, steering wheel 14, three-way pipe 15, three-way pipe 16, three-way pipe 17, left three-way pipe 18, right three-way pipe 19.
Specific implementation mode
Below in conjunction with the accompanying drawings, the utility model is further described by embodiment.
Embodiment
Referring to Fig. 1, a kind of hydro-steering synchronous control system for fork truck include fuel tank 1, oil pump 2, flow stabilizing valve 3,
Steering overflow valve 4, all-hydraulic steering gear 5, check valve 6 and steering cylinder 9.Right piston in 9 right working chamber of steering cylinder
The overhanging end of bar is equipped with wheel steering angle potentiometer 10（The wheel steering angle potentiometer 10 may also be arranged on 9 left work of steering cylinder
Make on the overhanging end of left piston bar of intracavitary）.All-hydraulic steering gear 5 is connected to steering wheel 14 by steering column, all-hydraulic
Steering wheel angle potentiometer 13 is equipped between steering gear 5 and steering wheel 14, steering wheel angle potentiometer 13 is rotated with steering wheel 14.
Further include the first compensation mechanism and the second compensation mechanism；First compensation mechanism includes the first solenoid valve 7 and first segment
Flow valve 8；Second compensation mechanism includes second solenoid valve 12 and second throttle 11；First solenoid valve 7 and second solenoid valve 12 are equal
For 2/2-way solenoid valve.
The a mouths of first solenoid valve 7 are connected to all-hydraulic steering gear with the a1 of second solenoid valve 12 mouth parallel connections by check valve 6
5 P oil inlets.
First throttle valve 8 is connected on the b mouths of the first solenoid valve 7, and the outlet of first throttle valve 8 is divided by left three-way pipe 18
It is not connected to the L actuator ports of the steering cylinder 9 left working chamber and all-hydraulic steering gear 5.
Second throttle 11 is connected on the b1 mouths of second solenoid valve 12, and the outlet of second throttle 11 passes through right three-way pipe
19 are respectively communicated with the R actuator ports of the steering cylinder 9 right working chamber and all-hydraulic steering gear 5.
When starting to start work, need to set wheel steering angle potentiometer 10 and direction in the electrical control gear of vehicle
The corner proportionate relationship of disk corner potentiometer 13.The corner proportionate relationship be the first solenoid valve 7 and second solenoid valve 12 whether
Connect the foundation of work.
The operation principle of the utility model is described as follows：When fork-truck steering, manipulation direction disk 14 drives hydro-steering
Device 5 is in operating position, and the pressure oil that oil pump 2 exports supplies all-hydraulic steering gear 5 through flow stabilizing valve 3, a part with regime flow,
Other working oil paths of another part supply forklift hydraulic system.All-hydraulic steering gear 5 by actuator port by pressure oil export to
Steering cylinder 9 acts.The corner difference of wheel steering angle potentiometer 10 and steering wheel angle potentiometer 13 determines the first solenoid valve 7
It is stopped with the work once electrified or dead electricity of second solenoid valve 12, decides whether to start difference compensation flow, to steering cylinder 9
Two chambers compensate The hydraulic oil.If the corner relative scale of wheel steering angle potentiometer 10 and steering wheel angle potentiometer 13 accords with
It closes and requires, the first solenoid valve 7 and 12 dead electricity of second solenoid valve do not work, and compensation flow is off；If because of steering oil
9 left side low on fuel of cylinder generates deviation, and the first solenoid valve 7 obtains electric commutation, and the pressure oil that oil pump 2 exports, which removes, passes through hydro-steering
Device 5 supply steering cylinder outside, also part by the first solenoid valve 7 through first throttle valve 8 supply steering cylinder 9, oil mass it is big
It is small to be adjusted by first throttle valve 8.Similarly, if because 9 right side low on fuel of steering cylinder generates deviation, second solenoid valve 12
Electric commutation is obtained, the pressure oil that oil pump 2 exports by all-hydraulic steering gear 5 in addition to supplying steering cylinder, and also part passes through second
Solenoid valve 12 supplies steering cylinder 9 through second throttle 11, and the size of oil mass is adjusted by second throttle 11, wheel steering
Angle is modified therewith, alwayss compensate for the corner ratio of wheel steering angle potentiometer 10 and steering wheel angle potentiometer 13 returning to
The proportion requirement of setting, compensation electromagnetic valve are just accordingly turned off.
Claims (4)
1. a kind of hydro-steering synchronous control system for fork truck, including fuel tank（1）, oil pump（2）, flow stabilizing valve（3）, turn to
System overflow valve（4）, all-hydraulic steering gear（5）, check valve（6）And steering cylinder（9）；The steering cylinder（9）Right working chamber
The overhanging end of interior right piston bar is equipped with wheel steering angle potentiometer（10）；The all-hydraulic steering gear（5）Pass through steering tube
Column is connected to steering wheel（14）, the all-hydraulic steering gear（5）And steering wheel（14）Between be equipped with steering wheel angle potentiometer
（13）, steering wheel angle potentiometer（13）With steering wheel（14）Rotation, it is characterised in that：
Further include the first compensation mechanism and the second compensation mechanism；
First compensation mechanism includes the first solenoid valve（7）And first throttle valve（8）；
Second compensation mechanism includes second solenoid valve（12）And second throttle（11）；
First solenoid valve（7）A mouths and second solenoid valve（12）A1 mouth parallel connections pass through check valve（6）It is connected to all-hydraulic
Steering gear（5）P oil inlets；
The first throttle valve（8）It is connected on the first solenoid valve（7）B mouths on, first throttle valve（8）Outlet be respectively communicated with
The steering cylinder（9）Left working chamber and all-hydraulic steering gear（5）An actuator port；
The second throttle（11）It is connected on second solenoid valve（12）B1 mouths on, second throttle（11）Outlet connect respectively
Lead to the steering cylinder（9）Right working chamber and all-hydraulic steering gear（5）An actuator port；
When work, pass through first throttle valve（8）It adjusts by the first solenoid valve（7）Into steering cylinder（9）The size of flow；Pass through
Second throttle（11）It adjusts by second solenoid valve（12）Into steering cylinder（9）The size of flow；According to wheel steering angle current potential
Device（10）With steering wheel angle potentiometer（13）Corner difference, determine the first solenoid valve（7）And second solenoid valve（12）'s
Work once electrified or dead electricity are stopped.
2. a kind of hydro-steering synchronous control system for fork truck according to claim 1, it is characterised in that：It is described
First solenoid valve（7）And second solenoid valve（12）It is 2/2-way solenoid valve.
3. a kind of hydro-steering synchronous control system for fork truck according to claim 1, it is characterised in that：It is described
First throttle valve（8）Outlet pass through left three-way pipe（18）It is respectively communicated with the steering cylinder（9）Left working chamber and all-hydraulic turn
To device（5）L actuator ports.
4. a kind of hydro-steering synchronous control system for fork truck according to claim 1, it is characterised in that：It is described
Second throttle（11）Outlet pass through right three-way pipe（19）It is respectively communicated with the steering cylinder（9）Right working chamber and all-hydraulic
Steering gear（5）R actuator ports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721624679.7U CN207683594U (en) | 2017-11-29 | 2017-11-29 | A kind of hydro-steering synchronous control system for fork truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721624679.7U CN207683594U (en) | 2017-11-29 | 2017-11-29 | A kind of hydro-steering synchronous control system for fork truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207683594U true CN207683594U (en) | 2018-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721624679.7U Active CN207683594U (en) | 2017-11-29 | 2017-11-29 | A kind of hydro-steering synchronous control system for fork truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207683594U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108146497A (en) * | 2017-11-29 | 2018-06-12 | 安徽合力股份有限公司 | A kind of hydro-steering synchronous control system for fork truck |
| CN110294014A (en) * | 2019-07-25 | 2019-10-01 | 农业农村部南京农业机械化研究所 | A kind of hydraulic steering system and its working method of self-correction |
-
2017
- 2017-11-29 CN CN201721624679.7U patent/CN207683594U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108146497A (en) * | 2017-11-29 | 2018-06-12 | 安徽合力股份有限公司 | A kind of hydro-steering synchronous control system for fork truck |
| CN108146497B (en) * | 2017-11-29 | 2024-01-05 | 安徽合力股份有限公司 | Full-hydraulic steering synchronous control system for forklift |
| CN110294014A (en) * | 2019-07-25 | 2019-10-01 | 农业农村部南京农业机械化研究所 | A kind of hydraulic steering system and its working method of self-correction |
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