CN110588772A - Steering control valve for steering wheel of crawler vehicle - Google Patents
Steering control valve for steering wheel of crawler vehicle Download PDFInfo
- Publication number
- CN110588772A CN110588772A CN201910833818.4A CN201910833818A CN110588772A CN 110588772 A CN110588772 A CN 110588772A CN 201910833818 A CN201910833818 A CN 201910833818A CN 110588772 A CN110588772 A CN 110588772A
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- China
- Prior art keywords
- control valve
- steering wheel
- control
- steering
- pilot
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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
- 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
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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 steering control valve of a steering wheel of a crawler vehicle, which comprises the steering wheel, wherein the outer surface of the rear end of the steering wheel is fixedly connected with a steering column, the outer surface of the rear end of the steering column is provided with a speed reducer, and the outer surface of the rear end of the speed reducer is provided with a pilot control valve. The steering wheel control device has the advantages that through the pilot control valve, the output shaft section connecting mechanism and the left and right limiting devices, the output pressure of the pilot handle can be controlled by the steering wheel, the steering wheel control device is provided with the speed reducing device and the stroke limiting device, and any hydraulic driving control mode can be adopted.
Description
Technical Field
The invention relates to the field of steering control valves, in particular to a steering control valve of a steering wheel of a crawler vehicle.
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 invention aims to overcome the defects in the prior art, provides a steering control valve of a steering wheel of a crawler traveling vehicle, and can effectively solve the problems in the background art.
In order to achieve the purpose, the invention provides the 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 invention has the beneficial effects that:
1. the invention changes the rotation of the steering wheel into the swing device for driving the pilot handle through the speed reducer, and can realize the same driving experience with the existing steering wheel by adjusting different speed reduction ratios, for example, when the steering wheel is at the middle position, the springs of the left and right pilot reducing valves are not pressed and belong to a free state, the output pressure is zero, the vehicle runs straight, when the steering wheel is steered leftwards, the spring of the left pilot reducing valve is compressed, the output pressure is in direct proportion to the number of turns of the steering wheel, the more the steering wheel is hit, the higher the output pressure is, (for example, the speed reduction ratio is set, when the steering wheel is hit leftwards for a half circle, the maximum compression amount of the spring of the pilot reducing valve is just the maximum, and the output pilot pressure is the maximum), so as to be convenient for people to use.
2. According to the invention, through the output shaft section connecting mechanism and the left and right limiting devices, the rotation of the steering wheel can be changed into a swinging device for driving the pilot handle, the rotating angle of the swinging plate is limited, the stroke limiting effect can be achieved, the hydraulic system can be protected, and the hydraulic system is prevented from being damaged.
3. Through the pilot control valve, people can adopt any hydraulic drive control mode to control, so that the hydraulic control valve is convenient for people to use.
Drawings
FIG. 1 is a general 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 illustration of the pilot control valve of 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 clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within 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 working principle and the using process of the invention are as follows: 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 1, characterized in that: 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 |
|---|---|---|---|
| CN201910833818.4A CN110588772A (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 |
|---|---|---|---|
| CN201910833818.4A CN110588772A (en) | 2019-09-04 | 2019-09-04 | Steering control valve for steering wheel of crawler vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110588772A true CN110588772A (en) | 2019-12-20 |
Family
ID=68857477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910833818.4A Pending CN110588772A (en) | 2019-09-04 | 2019-09-04 | Steering control valve for steering wheel of crawler vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110588772A (en) |
-
2019
- 2019-09-04 CN CN201910833818.4A patent/CN110588772A/en active Pending
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