CN211223595U - Automobile rear wheel steering system and vehicle with same - Google Patents
Automobile rear wheel steering system and vehicle with same Download PDFInfo
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- CN211223595U CN211223595U CN201922327810.9U CN201922327810U CN211223595U CN 211223595 U CN211223595 U CN 211223595U CN 201922327810 U CN201922327810 U CN 201922327810U CN 211223595 U CN211223595 U CN 211223595U
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Abstract
The utility model provides a car rear wheel steering system and vehicle that has it, car rear wheel steering system includes: the pump body is connected with the liquid storage tank; the centering cylinder is communicated with the pump body through an oil pipe; the rear steering power cylinder is communicated with the pump body through an oil pipe; one end of the pull rod is respectively connected with the centering cylinder and the rear steering power cylinder, and the other end of the pull rod is connected with the rear wheel; the centering valve is connected with the centering cylinder to control the oil on-off of the centering cylinder; the rear steering switching valve is connected with the rear steering power cylinder, and the steering starting valve is integrated on the liquid storage tank; a pressure controller and an accumulator; and a steering function key. According to the utility model discloses a car rear wheel steering system adopts the independent hydraulic steering system of rear wheel, and manual control button controls, has initiative centering function, has pressure alarming function, can realize that full round turns to function and crab type and turn to the function, system simple structure, operation safe and reliable.
Description
Technical Field
The utility model relates to a vehicle field, concretely relates to car rear wheel steering system and vehicle that has it.
Background
Because the long-wheelbase vehicle has large turning diameter in the turning process, the whole vehicle has poor maneuvering performance and low efficiency, and even cannot pass in narrow space. Therefore, the rear wheels are involved in steering, the turning diameter of the whole vehicle can be greatly reduced, and the maneuverability of the vehicle is improved. At present, the domestic heavy vehicle adopts an electric control all-wheel steering technology to control the steering angle of the rear wheels according to the steering angle of the front wheels. Although the automatic control can realize the real-time correspondence between the steering angles of the rear wheels and the front wheels, the control strategy is complex, and the safety of the vehicle can be ensured by long-term verification and continuous perfection. Otherwise, the vehicle is easy to be unstable, and the driving safety is affected.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides an automobile rear wheel steering system.
In order to solve the technical problem, the utility model discloses a following technical scheme:
according to the utility model discloses automobile rear wheel steering system of first aspect embodiment for control rear wheel turns to, automobile rear wheel steering system includes:
the pump body is connected with the liquid storage tank;
the centering cylinder is communicated with the pump body through an oil pipe;
the rear steering power cylinder is communicated with the pump body through an oil pipe;
one end of the pull rod is connected with the centering cylinder and the rear steering power cylinder respectively, and the other end of the pull rod is connected with the rear wheel;
the centering valve is connected with the centering cylinder to control the on-off of the centering cylinder;
the rear steering switching valve is connected with the rear steering power cylinder to control the oil on-off of the steering power cylinder;
a steering trigger valve integrated on the reservoir;
the pressure controller and the energy accumulator are respectively communicated with the liquid storage tank, the pump body and the centering cylinder through oil pipes;
and the steering function key is connected with the rear steering switching valve to control the working state of the rear steering switching valve.
Further, the automobile rear wheel steering system further includes: and one end of the pull rod is hinged with the centering cylinder and the rear steering power cylinder through the rocker arm.
Further, the other end of the pull rod is hinged with the rear wheel.
Further, the pump body and the rear steering switching valve are respectively integrated in a liquid storage tank.
Furthermore, the steering function key is arranged in the cab.
Further, the pressure controller and the accumulator are integrated on the frame, respectively.
The vehicle according to the embodiment of the second aspect of the present invention includes the automobile rear wheel steering system of the above-described embodiment.
The utility model discloses an above-mentioned technical scheme's beneficial effect as follows:
according to the utility model discloses car rear wheel steering system adopts the independent hydraulic steering system of rear wheel, and manual control button controls, has initiative centering function, has pressure alarming function, can realize that full round turns to function and crab type and turn to the function, and system simple structure easily controls, moves safe and reliable.
Drawings
Fig. 1 is a schematic structural diagram of an automobile rear wheel steering system according to an embodiment of the present invention;
fig. 2 is the utility model discloses the hydraulic pressure theory of operation and the electrical control chart of car rear wheel steering system.
Reference numerals
An automotive rear wheel steering system 100; a liquid storage tank 10; a pump body 20; a centering cylinder 30; a rear steering power cylinder 40; a pull rod 50; a centering valve 60; a rear steering switching valve 70; a pressure controller 80; an accumulator 90; a steering function key 91; a switch 92; a steering start valve 93; a centering loop 200; turning to circuit 300.
Detailed Description
In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined below to clearly and completely describe the technical solution of the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments, which can be derived from the description of the embodiments of the present invention by a person skilled in the art, are within the scope of the present invention.
The following first describes the rear wheel steering system 100 of the vehicle according to an embodiment of the present invention in detail with reference to the drawings.
According to the utility model discloses automobile rear wheel system 100 is used for controlling the rear wheel and turns to, and automobile rear wheel system 100 includes liquid reserve tank 10, the pump body 20, centering cylinder 30, rear steering power cylinder 40, pull rod 50, centering valve 60, rear steering diverter valve 70, turns to start-up valve 93, pressure controller 80 and energy storage 90 and turns to function button 91.
Specifically, the pump body 20 is connected to the reservoir 10, the centering cylinder 30 is connected to the pump body 20 through an oil pipe, the rear steering power cylinder 40 is connected to the pump body 20 through an oil pipe, one end of the tie rod 50 is connected to the centering cylinder 30 and the rear steering power cylinder 40, respectively, the other end is connected to the rear wheel, the centering valve 60 is connected to the centering cylinder 30 to control the on/off of the centering cylinder 30, the rear steering switch valve 70 is connected to the rear steering power cylinder 40 to control the on/off of the steering power cylinder, the steering start valve 93 is integrated to the reservoir 10, the pressure controller 80 and the energy accumulator 90 are connected to the reservoir 10, the pump body 20 and the centering cylinder 30 through oil pipes, respectively, and the steering function button 91 is connected to the rear steering switch valve 70 to control the operating state of the rear steering switch valve 70.
In other words, as shown in fig. 1 and 2, the rear wheel steering system 100 of the vehicle includes a fluid storage tank 10, a pump body 20, a rear steering power cylinder 40, a centering cylinder 30, a centering valve 60, an accumulator 90, a rear steering switching valve 70, a pull rod 50, a pressure controller 80 (and a switch 92), a steering function button 91, and the like, and the steering function button 91 (including a main steering function button and a rear steering function button) is disposed on a dashboard of the cab for the convenience of the driver. The rear steering power cylinder 40 is an actuating element for rear steering, the pump body 20 is a power source of a hydraulic system, and the centering cylinder 30 is used for completing the resetting action of the wheels and providing a holding force required by the straight running of the wheels after the steering operation is finished; the middle valve 60 is used as a control element for controlling the operation of the centering cylinder 30, the rear steering switching valve 70 is used for controlling the flow direction of high-pressure oil to realize the steering direction of wheels and can be controlled by an instrument panel button, the pull rod 50 is a force transmission structure, the energy accumulator 90 is used for providing hydraulic energy for the operation of the centering cylinder 30, the pressure controller 80 is used for monitoring the pressure change in the centering loop 200, when the pressure is reduced to a set lower limit point, the controller gives an alarm and switches on an internal electric loop to drive the pump body 20 to operate and supplement the pressure for the energy accumulator 90, when the pressure of the energy accumulator 90 is increased to a set upper limit point, the internal electric loop of the controller is switched off, and the pump body 20 stops operating.
The hydraulic principle of the automobile rear wheel steering system 100 is as follows: during straight running, the outlet of the pump body 20 is communicated with the centering loop 200 through the steering starting valve 93. The accumulator 90 communicates with the centering cylinder 30 through the centering valve 60 to provide sufficient pressure to the centering cylinder 30 to ensure that the wheels are in the straight position. When the pressure controller detects that the pressure of the energy accumulator 90 is reduced to the lower limit, the built-in switch of the pressure controller 80 is closed, and the pump body 20 starts to supplement the pressure to the energy accumulator 90; when the pressure of the accumulator 90 reaches the set upper limit, the built-in switch of the pressure controller is turned on, and the pump body 20 stops working.
When the rear wheel is operated in a steering mode, the outlet of the pump body 20 is communicated with the steering loop 300 through the steering starting valve 93. Meanwhile, the centering valve 60 is closed, and the oil in the centering cylinder 30 flows back to the reservoir 10 through the centering valve 60. The oil path is connected to the rear steering cylinder 40 through the rear steering switching valve 70, and the direction of the oil path is changed by the operation of the rear steering switching valve 70 to control the left and right steering of the rear wheels. Meanwhile, the oil in the other chamber of the rear steering power cylinder 40 flows back to the reservoir 10 through the rear steering switching valve 70.
That is, when the vehicle is running straight, the steering function button 91 is in the "off" state, the rear steering switching valve 70 is in the "off" state, and the centering cylinder 30 is in the operating state; the energy accumulator 90 provides centering pressure for the centering cylinder 30, when the pressure of the energy accumulator 90 is reduced to a set lower limit value, the pump body 20 can be automatically started to supplement the pressure for the energy accumulator 90, and when the pressure reaches an upper limit set value, the pump body 20 stops working; under the action of the energy accumulator 90, the left and right cavities of the centering cylinder 30 are in a high-pressure state, so that the wheels are always in a straight running state and are not easily interfered by the ground. When the vehicle needs to steer the rear wheel, the steering function key 91 is firstly in the 'on' state, the pump body 20 is connected into the steering loop 300, the left steering is needed, the rear steering switching valve 70 is switched to the 'left', the right steering is needed, the rear steering switching valve 70 is switched to the 'right', the pressure of the centering cylinder 30 is released by the centering valve 60 at the moment, and no additional resistance influences the steering action during the steering process.
According to the embodiment of the present invention, the rear wheel steering system 100 can automatically push the wheels to the straight driving position after the rear steering is finished; when the pressure is lower than the set low point, the pump body 20 starts to charge the energy accumulator 90, and when the pressure reaches the set high point, the pump body 20 stops working; when the rear steering works, the centering loop 200 completes pressure relief, and the resistance in the steering process is reduced. The automobile rear wheel steering system 100 has positive significance for reducing the turning radius of a large vehicle and increasing the maneuvering flexibility of the vehicle, and the automobile rear wheel steering system 100 is safe, reliable, low in cost, easy to control, easy to maintain and popularize.
From this, according to the utility model discloses car rear wheel steering system 100 adopts the independent hydraulic steering system of rear wheel, and manual control button controls, has initiative centering function, has pressure alarm function, can realize that full round turns to the function and crab type turns to the function, and especially when sharp driving process, the system initiative centering function provides the holding power that the wheel straight line was gone, ensures that the vehicle is high-speed stable, and this system simple structure easily controls, operation safe and reliable.
According to some specific embodiments of the present invention, the rear wheel steering system 100 further comprises a rocker arm, and one end of the pull rod 50 is hinged to the centering cylinder 30 and the rear steering power cylinder 40 through the rocker arm. Further, the other end of the tie rod 50 is hinged with the rear wheel.
Optionally, the pump body 20 and the rear steering switching valve 70 are respectively integrated in the liquid storage tank 10, so that the structure is simple and the installation is convenient.
In an embodiment of the present invention, the steering function button 91 is provided on the instrument panel of the cockpit, which is convenient for operation.
In one embodiment of the present invention, the pressure controller 80 and the accumulator 90 are integrated on the frame, respectively.
To sum up, according to the utility model discloses car rear wheel steering system 100 adopts the independent hydraulic steering system of rear wheel, and manual control button controls, has initiative centering function, has pressure alarm function, can realize that all round turns to function and crab type and turn to the function, and system simple structure easily controls, moves safe and reliable.
According to the utility model discloses the vehicle includes the car rear wheel system of steering 100 according to above-mentioned embodiment, because according to the utility model discloses the car rear wheel system of steering 100 of above-mentioned embodiment has above-mentioned technological effect, consequently, according to the utility model discloses the vehicle also has corresponding technological effect, easily controls promptly, moves safe and reliable.
Other structures and operations of the vehicle according to the embodiments of the present invention will be understood and readily implemented by those skilled in the art, and thus will not be described in detail.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (7)
1. A rear-wheel steering system for a vehicle for controlling rear-wheel steering, the rear-wheel steering system comprising:
the pump body is connected with the liquid storage tank;
the centering cylinder is communicated with the pump body through an oil pipe;
the rear steering power cylinder is communicated with the pump body through an oil pipe;
one end of the pull rod is connected with the centering cylinder and the rear steering power cylinder respectively, and the other end of the pull rod is connected with the rear wheel;
the centering valve is connected with the centering cylinder to control the on-off of the centering cylinder;
the rear steering switching valve is connected with the rear steering power cylinder to control the oil on-off of the steering power cylinder;
a steering trigger valve integrated on the reservoir;
the pressure controller and the energy accumulator are respectively communicated with the liquid storage tank, the pump body and the centering cylinder through oil pipes;
and the steering function key is connected with the rear steering switching valve to control the working state of the rear steering switching valve.
2. The automobile rear wheel steering system according to claim 1, characterized by further comprising:
and one end of the pull rod is hinged with the centering cylinder and the rear steering power cylinder through the rocker arm.
3. The automobile rear wheel steering system according to claim 1, wherein the other end of the tie rod is hinged to the rear wheel.
4. The automobile rear wheel steering system according to claim 1, wherein the pump body and the rear steering switching valve are respectively integrated in a tank.
5. The automobile rear wheel steering system according to claim 1, wherein the steering function key is provided in a driver's cabin.
6. The rear wheel steering system according to claim 1, wherein the pressure controller and the accumulator are integrated on a frame, respectively.
7. A vehicle characterized by comprising the automobile rear wheel steering system according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922327810.9U CN211223595U (en) | 2019-12-23 | 2019-12-23 | Automobile rear wheel steering system and vehicle with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922327810.9U CN211223595U (en) | 2019-12-23 | 2019-12-23 | Automobile rear wheel steering system and vehicle with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211223595U true CN211223595U (en) | 2020-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922327810.9U Active CN211223595U (en) | 2019-12-23 | 2019-12-23 | Automobile rear wheel steering system and vehicle with same |
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| Country | Link |
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| CN (1) | CN211223595U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113276940A (en) * | 2021-07-05 | 2021-08-20 | 北京汽车集团越野车有限公司 | Vehicle steering system and vehicle |
| CN113386854A (en) * | 2021-07-01 | 2021-09-14 | 北京汽车集团越野车有限公司 | Vehicle steering system and vehicle |
| CN113460159A (en) * | 2021-07-01 | 2021-10-01 | 北京汽车集团越野车有限公司 | Oil pump motor control device and vehicle |
-
2019
- 2019-12-23 CN CN201922327810.9U patent/CN211223595U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113386854A (en) * | 2021-07-01 | 2021-09-14 | 北京汽车集团越野车有限公司 | Vehicle steering system and vehicle |
| CN113460159A (en) * | 2021-07-01 | 2021-10-01 | 北京汽车集团越野车有限公司 | Oil pump motor control device and vehicle |
| CN113276940A (en) * | 2021-07-05 | 2021-08-20 | 北京汽车集团越野车有限公司 | Vehicle steering system and vehicle |
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