CN212074201U - Steering control valve for steering wheel of crawler vehicle - Google Patents
Steering control valve for steering wheel of crawler vehicle Download PDFInfo
- Publication number
- CN212074201U CN212074201U CN201921464088.7U CN201921464088U CN212074201U CN 212074201 U CN212074201 U CN 212074201U CN 201921464088 U CN201921464088 U CN 201921464088U CN 212074201 U CN212074201 U CN 212074201U
- Authority
- CN
- China
- Prior art keywords
- control valve
- steering wheel
- control
- steering
- pilot
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Power Steering Mechanism (AREA)
Abstract
The utility model discloses a crawler-type traveling vehicle steering wheel steering control valve, including the steering wheel, the rear end fixed surface of steering wheel is connected with the steering column, the rear end surface of steering column is provided with decelerator, decelerator's rear end surface is provided with the pilot control valve. The utility model discloses a pilot control valve, output shaft section coupling mechanism with control stop device, can adopt the output pressure size of steering wheel control pilot handle to have decelerator and stroke stop device, still can adopt any hydraulic drive's control mode, the utility model has the advantages of simple structure, match with the control mode of current tire vehicle, but can make people's the operation degree of difficulty greatly reduced, people's operation comfort level also rises by a wide margin, and do not have pilot pressure to strike etc. yet, also can not cause the damage to hydraulic system, guarantee the life of crawler traveling vehicle steering wheel steering control valve, be favorable to people's use.
Description
Technical Field
The utility model relates to a steering control valve field specifically is crawler travel vehicle steering wheel steering control valve.
Background
The hydraulic drive crawler-type traveling vehicle at the present stage, no matter a closed system or a starting system, controls the flow passing through a traveling motor by means of the pressure of a pilot system to achieve the purpose of controlling the traveling speed, the higher the pilot pressure is, the more the flow provided by the system to the motor is, the higher the rotating speed of the motor is, the faster the traveling speed is reflected, the difference is that the closed system controls the discharge capacity of a pump by means of the pilot pressure, while the open system controls the opening amount of a valve by means of the pilot pressure, and in the traveling process, if the flow supplied by the two motors is the same, the vehicle travels linearly; if the flow rate supplied by the motor on one side is smaller than that supplied by the motor on the other side, the vehicle turns to the side with the smaller flow rate; if the flow direction of the supply motor is opposite, the vehicle can turn on the spot, the pilot oil pressure is provided by the pilot valve, the principle of the pilot valve is a pressure reducing valve, the output pressure of the valve is in direct proportion to the control spring force, the larger the compression amount of the spring is, the higher the pilot pressure is, and the compression amount of the spring is controlled by the lever principle.
In use, the tracked vehicle steering wheel steering control valve may perform the following form of operation: the steering of the vehicle can be controlled, the driving difficulty of the crawler traveling vehicle can be reduced, and the operation comfort can be improved.
Although the steering control valve of the steering wheel of the existing crawler traveling vehicle has simple structure and convenient use, the steering control valve has single function, the existing steering control valve of the steering wheel of the crawler traveling vehicle adopts handle control in the using process of the crawler traveling vehicle, the handle control is mostly two handle control, one handle controls a left crawler and one handle controls a right crawler, or the control is carried out by matching a cross pilot with a shuttle valve group, when the crawler traveling vehicle travels at high speed, because the speed is higher, the strength of the handle is not easy to control, and sometimes when the crawler traveling vehicle passes through a ravine or a hill, because the vehicle fluctuates greatly, the handle is more difficult to control the speed, the sudden acceleration or the sudden deceleration is easy to cause huge impact to the vehicle, the damage to a motor can be caused, and the threat to the health of people can be caused, although the problem can be conveniently solved by the existing electric control system, the price is more expensive and the, the steering control valve of the steering wheel of the crawler vehicle is difficult to popularize and use particularly in the field needing explosion prevention, and therefore the steering control valve of the steering wheel of the crawler vehicle is provided.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to overcome current defect, provide crawler travel vehicle steering wheel steering control valve, can effectively solve the problem among the background art.
In order to achieve the above object, the utility model provides a following technical scheme: the steering wheel comprises a steering wheel body, a steering column is fixedly connected to the outer surface of the rear end of the steering wheel body, a speed reducing device is arranged on the outer surface of the rear end of the steering column, and a pilot control valve is arranged on the outer surface of the rear end of the speed reducing device.
Preferably, the upper end of the pilot control valve is provided with a control rod, the outer surface of the control rod is provided with a dustproof corrugated sleeve, the outer surface of the lower end of the control rod is provided with a control rod connected with a movable block, the lower end of the control rod connected with the movable block is provided with a plunger, the lower end of the plunger is provided with a return spring, the lower end of the return spring is provided with a control spring, a control valve core is arranged inside the control spring, the outer surface of the control valve core is provided with a drill hole, and the outer surface of the plunger is provided with a shell.
Preferably, a limit control groove is formed between the plunger and the housing, the outer surface of the plunger is movably connected with the inner surface of the housing through the limit control groove, oil grooves are formed in the outer surface of the control valve core, the number of the control valve cores is two, an oil port P and an oil return port T are formed in the outer surface of one side of the housing, and a first oil port and a second oil port are formed in the outer surface of the lower end of the pilot control valve.
Preferably, a fixed connection installation mechanism is arranged between the steering column and the steering wheel, and the outer surface of the front end of the steering column is detachably connected with the outer surface of the rear end of the steering wheel through the fixed connection installation mechanism.
Preferably, a rotary connection control mechanism is arranged between the speed reducer and the steering column, and the outer surface of the rear end of the steering column is movably connected with the outer surface of the front end of the speed reducer through the rotary connection control mechanism.
Preferably, an output shaft section connecting mechanism and a left limiting device and a right limiting device are arranged between the pilot control valve and the speed reducing device, and the output shaft section connecting mechanism is located at the rear ends of the left limiting device and the right limiting device.
Preferably, a conversion swing device is arranged between the control rod and the speed reducing device, the outer surface of the front end of the control rod is movably connected with the outer surface of the rear end of the speed reducing device through the conversion swing device, and the outer surface of the front end of the control rod is movably connected with the inner surfaces of the left limiting device and the right limiting device.
Preferably, a fixed connection mounting frame is arranged between the pilot control valve and the speed reducing device, and the outer surface of the front end of the pilot control valve is detachably connected with the outer surface of the rear end of the speed reducing device through the fixed connection mounting frame.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a decelerator, decelerator becomes the pendulous device of drive guide's handle with the rotation of steering wheel, through adjusting different reduction ratio, can realize realizing the same driving experience with current steering wheel, for example the steering wheel is when the intermediate position, the spring of controlling two guide's relief pressure valves is not compressed tightly and is belonged to free state, the pressure of output just is zero, the vehicle is straight to be gone, when playing the direction left, the spring of guide's relief pressure valve on the left side is compressed, the pressure size of output just with play the number of turns of steering wheel directly proportional, it is more to play, the pressure of output is higher, (for example set for good reduction ratio, make to play steering wheel a circle half a time left, just in time be the biggest compression capacity of the spring of guide's relief pressure valve, the guide's pressure of output is the biggest), so.
2. The utility model discloses an output shaft section coupling mechanism with control stop device, can become the pendulous device of drive guide handle with the rotation of steering wheel to the turned angle of restriction swing board can play the spacing effect of stroke, can play the effect of protection to hydraulic system, avoids damaging hydraulic system.
3. The utility model discloses a pilot operated valve, people can adopt any hydraulic drive's control mode to control to people's use.
Drawings
FIG. 1 is an overall view of the present invention;
fig. 2 is a side view of the present invention;
fig. 3 is a rear view of the present invention;
fig. 4 is a schematic structural diagram of the pilot control valve in fig. 1 according to the present invention;
fig. 5 is a top view of the present invention;
fig. 6 is a front view of the present invention;
in the figure: 1. a pilot control valve; 101. a control lever; 102. a control valve core; 103. a control spring; 104. a return spring; 105. a plunger; 106. a housing; 107. the control rod is connected with the movable block; 108. drilling; 109. a dust-proof bellows sleeve; 2. a reduction gear; 3. a steering column; 4. a steering wheel; 5. an output shaft section connecting mechanism; 6. left and right limiting devices.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-6, the present invention provides a technical solution: including steering wheel 4, steering wheel 4's rear end surface fixed connection has steering column 3, and steering column 3's rear end surface is provided with decelerator 2, and decelerator 2's rear end surface is provided with pilot control valve 1.
The operation can be simple, in this embodiment, preferably, the upper end of the pilot control valve 1 is provided with a control rod 101, the outer surface of the control rod 101 is provided with a dustproof bellows sleeve 109, the outer surface of the lower end of the control rod 101 is provided with a control rod connection movable block 107, the lower end of the control rod connection movable block 107 is provided with a plunger 105, the lower end of the plunger 105 is provided with a return spring 104, the lower end of the return spring 104 is provided with a control spring 103, the inside of the control spring 103 is provided with a control valve core 102, the outer surface of the control valve core 102 is provided with a drill hole 108, and the outer surface of the.
Any hydraulic mode can be adopted for driving, in this embodiment, preferably, a limit control groove is formed between the plunger 105 and the housing 106, the outer surface of the plunger 105 is movably connected with the inner surface of the housing 106 through the limit control groove, an oil groove is formed in the outer surface of the control valve core 102, the number of the control valve cores 102 is two, an oil port P and an oil return port T are formed in the outer surface of one side of the housing 106, and a first oil port and a second oil port are formed in the outer surface of the lower end of the pilot control valve 1.
In order to facilitate the control of the steering of the vehicle by the steering wheel 4, in the embodiment, it is preferable that a fixed connection mounting mechanism is provided between the steering column 3 and the steering wheel 4, and the outer surface of the front end of the steering column 3 is detachably connected with the outer surface of the rear end of the steering wheel 4 through the fixed connection mounting mechanism.
In order to facilitate the transmission control of the steering column 3, in this embodiment, it is preferable that a rotational connection control mechanism is disposed between the speed reducer 2 and the steering column 3, and the outer surface of the rear end of the steering column 3 is movably connected with the outer surface of the front end of the speed reducer 2 through the rotational connection control mechanism.
The operation difficulty of people is reduced, and the effect of protecting a hydraulic system is achieved, in the embodiment, preferably, an output shaft section connecting mechanism 5 and a left limiting device and a right limiting device 6 are arranged between the pilot control valve 1 and the speed reducing device 2, and the output shaft section connecting mechanism 5 is located at the rear end of the left limiting device and the rear end of the right limiting device 6.
In this embodiment, it is preferable that a switching swing device is disposed between the control rod 101 and the speed reducer 2, the outer surface of the front end of the control rod 101 is movably connected to the outer surface of the rear end of the speed reducer 2 through the switching swing device, and the outer surface of the front end of the control rod 101 is movably connected to the inner surfaces of the left and right stoppers 6.
In this embodiment, preferably, a fixed connection mounting frame is arranged between the pilot control valve 1 and the speed reduction device 2, and the outer surface of the front end of the pilot control valve 1 is detachably connected with the outer surface of the rear end of the speed reduction device 2 through the fixed connection mounting frame.
The utility model discloses a theory of operation and use flow: when in use, the working principle of the steering control valve of the steering wheel of the crawler vehicle is as follows: the hydraulic pilot control device works based on a direct-acting type pressure reducing valve, and mainly comprises a control rod 101, two pressure reducing valves and a shell 106, wherein each pressure reducing valve comprises a control valve core 102, a control spring 103, a return spring 104 and a plunger 105, under the condition of no operation, the control rod 101 is kept at a middle position by the return spring 104, a first oil port and a second oil port are controlled to be connected to an oil return port T through a drilling hole 108, when the control rod 101 deviates, the plunger 105 presses the return spring 104 and the control spring 103, the control spring 103 starts to move the control valve core 102 downwards, and then connection between the corresponding oil ports and the oil return port T is closed. Meanwhile, the corresponding oil port is connected to the oil port P through the drill 108, the control valve core 102 is in balance under the force generated by the hydraulic pressure of the corresponding oil port (the first oil port and the second oil port) and the force of the control spring 103, the control stage begins, because the control valve core 102 and the control spring 103 have interaction, the pressure in the corresponding oil port is proportional to the stroke of the plunger 105 and is thus proportional to the position of the control rod 101, the pressure control is a function of the position of the control rod 101 and the characteristics of the control spring 103, the proportional hydraulic control can be performed on the directional valve of the hydraulic pump and the motor and the high-frequency response control valve, the steering control valve of the steering wheel of the crawler traveling vehicle has a simple structure, is equivalent to the control mode of the existing tire vehicle, the operation difficulty of people can be greatly reduced, the operation comfort level can be greatly raised, and pilot pressure impact and the like, no damage to the hydraulic system.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. Crawler-belt vehicle steering wheel steering control valve, including steering wheel (4), its characterized in that: the steering wheel is characterized in that a steering column (3) is fixedly connected to the outer surface of the rear end of the steering wheel (4), a speed reducing device (2) is arranged on the outer surface of the rear end of the steering column (3), and a pilot control valve (1) is arranged on the outer surface of the rear end of the speed reducing device (2).
2. The tracked vehicle steering wheel steering control valve according to claim 1, characterized in that: the pilot control valve is characterized in that a control rod (101) is arranged at the upper end of the pilot control valve (1), a dustproof corrugated sleeve (109) is arranged on the outer surface of the control rod (101), a control rod connecting movable block (107) is arranged on the outer surface of the lower end of the control rod (101), a plunger (105) is arranged at the lower end of the control rod connecting movable block (107), a return spring (104) is arranged at the lower end of the plunger (105), a control spring (103) is arranged at the lower end of the return spring (104), a control valve core (102) is arranged inside the control spring (103), a drill hole (108) is arranged on the outer surface of the control valve core (102), and a shell (106) is arranged on the outer surface of the.
3. The tracked vehicle steering wheel steering control valve according to claim 2, wherein: a limiting control groove is formed between the plunger (105) and the shell (106), the outer surface of the plunger (105) is movably connected with the inner surface of the shell (106) through the limiting control groove, an oil groove is formed in the outer surface of the control valve core (102), the number of the control valve cores (102) is two, an oil port P and an oil return port T are formed in the outer surface of one side of the shell (106), and a first oil port and a second oil port are formed in the outer surface of the lower end of the pilot control valve (1).
4. The tracked vehicle steering wheel steering control valve according to claim 1, characterized in that: be provided with fixed connection installation mechanism between steering column (3) and steering wheel (4), the front end surface of steering column (3) can be dismantled through the rear end surface of fixed connection installation mechanism and steering wheel (4) and be connected.
5. The tracked vehicle steering wheel steering control valve according to claim 1, characterized in that: a rotary connection control mechanism is arranged between the speed reducer (2) and the steering column (3), and the outer surface of the rear end of the steering column (3) is movably connected with the outer surface of the front end of the speed reducer (2) through the rotary connection control mechanism.
6. The tracked vehicle steering wheel steering control valve according to claim 1, characterized in that: an output shaft section connecting mechanism (5) and a left limiting device and a right limiting device (6) are arranged between the pilot control valve (1) and the speed reducing device (2), and the output shaft section connecting mechanism (5) is located at the rear ends of the left limiting device and the right limiting device (6).
7. The tracked vehicle steering wheel steering control valve according to claim 2, wherein: be provided with conversion pendulous device between control lever (101) and decelerator (2), the front end surface of control lever (101) passes through conversion pendulous device and decelerator (2) rear end surface swing joint, the front end surface of control lever (101) and the interior surface swing joint of controlling stop device (6).
8. The tracked vehicle steering wheel steering control valve according to claim 1, characterized in that: the pilot control valve is characterized in that a fixed connection mounting frame is arranged between the pilot control valve (1) and the speed reducing device (2), and the outer surface of the front end of the pilot control valve (1) is detachably connected with the outer surface of the rear end of the speed reducing device (2) through the fixed connection mounting frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921464088.7U CN212074201U (en) | 2019-09-04 | 2019-09-04 | Steering control valve for steering wheel of crawler vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921464088.7U CN212074201U (en) | 2019-09-04 | 2019-09-04 | Steering control valve for steering wheel of crawler vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212074201U true CN212074201U (en) | 2020-12-04 |
Family
ID=73556602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921464088.7U Active CN212074201U (en) | 2019-09-04 | 2019-09-04 | Steering control valve for steering wheel of crawler vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212074201U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110588772A (en) * | 2019-09-04 | 2019-12-20 | 冀凯河北机电科技有限公司 | Steering control valve for steering wheel of crawler vehicle |
-
2019
- 2019-09-04 CN CN201921464088.7U patent/CN212074201U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110588772A (en) * | 2019-09-04 | 2019-12-20 | 冀凯河北机电科技有限公司 | Steering control valve for steering wheel of crawler vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212074201U (en) | Steering control valve for steering wheel of crawler vehicle | |
| CN102229347A (en) | Electric power-assisted steering system of electric vehicle and power-assisted steering method thereof | |
| CN103171612A (en) | Steer-by-wire vehicle steering wheel limit mechanism | |
| CN206723178U (en) | A kind of combined vibration hydraulic system | |
| CN201884349U (en) | Cushioning device of revolving arm support | |
| CN103591282B (en) | Moving speed of engineering machine controls switching valve | |
| CN110588772A (en) | Steering control valve for steering wheel of crawler vehicle | |
| CN104029713A (en) | Bevel-gear-type vehicle drive-by-wire steering wheel device | |
| CN204432758U (en) | A kind of steering hardware having double dynamical deflector | |
| CN101700763A (en) | Engineering machine control device of hydrostatic drive walking system | |
| CN2685193Y (en) | Lateral moving mechanism for vehicle | |
| CN208457175U (en) | A kind of speed-changer operation device | |
| CN102773397B (en) | Walking closed system of forging manipulator | |
| CN104176118A (en) | Automobile crane and cylinder-controlled steering system thereof | |
| CN206154286U (en) | Forklift robot | |
| CN101865170B (en) | Follow-up reversing mechanism and follow-up reserving method | |
| CN201496620U (en) | Velocity/torque changeover valve | |
| CN203585299U (en) | Control changeover valve for traveling speeds of engineering machinery | |
| CN203844825U (en) | Bevel gear type vehicle steer-by-wire steering wheel device | |
| CN203098829U (en) | Electric-hydraulic reversing speed change actuator | |
| CN201264687Y (en) | Integrated combined adjusting hydraulic damper apparatus for vehicle steering | |
| CN203044776U (en) | Closed loop for traveling of forging manipulator | |
| CN219013220U (en) | Proportional valve for power reversing | |
| CN112555213A (en) | Hydraulic control loop, valve group unit and engineering machinery | |
| CN216468067U (en) | Pressure control valve device of automobile steering device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |