CN210882300U - Rearmounted electricity liquid a steering system of steering gear - Google Patents
Rearmounted electricity liquid a steering system of steering gear Download PDFInfo
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- CN210882300U CN210882300U CN201921721615.8U CN201921721615U CN210882300U CN 210882300 U CN210882300 U CN 210882300U CN 201921721615 U CN201921721615 U CN 201921721615U CN 210882300 U CN210882300 U CN 210882300U
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Abstract
The utility model belongs to the automobile steering system field discloses a rearmounted electricity liquid a steering system of steering gear, including frame and preceding steering spindle, rearmounted electricity liquid a steering system of steering gear arranges in the steering axle rear side, still includes steering gear, steering linkage, steering oil pump and steering oil jar. The utility model arranges the steering system components at the rear of the steering axle, reduces the length of the front suspension and the frame of the vehicle, reduces the turning radius of the vehicle and improves the maneuverability of the vehicle; the steering wheel, the steering shaft and other control mechanisms of the traditional tractor are not needed, the structure is simple, and the production cost is low. In addition, the traditional axle is adopted to replace a hydraulic steering axle system to realize steering, and compared with the hydraulic steering axle system, the production cost is further reduced.
Description
Technical Field
The utility model relates to a car a steering system field especially relates to a rearmounted electricity liquid a steering system of steering gear.
Background
The existing vehicle steering system is mostly arranged at the front part of a front axle, the arrangement form increases the length of a front suspension and a frame of the vehicle, increases the turning radius of the vehicle and reduces the maneuverability of the vehicle.
The existing unconventional vehicle steering systems include the following:
1. the double-power-cylinder hydraulic power-assisted steering system with the rear-mounted front axle arranges the components of the steering system behind the front axle, and simultaneously adopts a hydraulic power-assisted steering system or an engineering-grade hydraulic steering axle system to realize the steering function.
2. The system comprises a steering shaft, wherein the steering shaft is fixed on a frame through a steering shaft fixing frame, and the steering shaft drives the steering system to steer through a motor steering control system.
In the prior art, although the steering system components of the double-power-cylinder hydraulic power steering system with the rear front axle are arranged behind the front axle, the hydraulic power steering system or the engineering-grade hydraulic steering axle system is adopted to realize the steering function, so that the cost is high. Although the steering system of the electro-hydraulic hybrid unmanned automobile steering system is easy to control, has good control effect and is suitable for steering control under an unmanned automobile, the structure is complex, and the occupied space is large.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a rearmounted electricity liquid steering system of steering gear, can be applied to unmanned vehicle, arrange the steering system part in the steering axle rear, fully shorten the length of front overhang and frame, improve vehicle mobility; meanwhile, the traditional axle is adopted to replace a hydraulic steering axle system to realize steering, so that the production cost is reduced.
To achieve the purpose, the utility model adopts the following technical proposal:
the utility model provides a rearmounted electricity liquid a steering system of steering gear, includes frame (2) and preceding steering spindle (5), the rearmounted electricity liquid a steering system of steering gear arranges in the steering axle rear side, still includes:
the steering gear (3), the said steering gear (3) is fixed on the rear portion of the said frame (2);
the steering pull rod (6) is connected between the front steering shaft (5) and the steering gear (3) and is used for driving the front steering shaft (5) to steer under the driving of the steering gear (3);
the steering oil pump (7) is connected with the steering gear (3) through a first steering oil pipe (41);
and the steering oil tank (1) is arranged above the frame (2), is connected with the steering gear (3) through a second steering oil pipe (42) and is connected with the steering oil pump (7) through a third steering oil pipe (43).
Preferably, the third steering oil pipe (43) is an oil inlet pipe for supplying oil to the steering oil pump (7).
Preferably, the second steering oil pipe (42) is an oil return pipe for returning oil.
Preferably, the steering oil pump (7) is connected with a steering oil pump controller, and the vehicle control unit controls the steering oil pump (7) to be opened and closed by controlling the steering oil pump controller.
Preferably, a rotation angle sensor is further arranged on the rear electro-hydraulic steering system of the steering gear and used for feeding back a rotation angle of the front steering shaft (5) to the vehicle control unit.
Preferably, the steering oil tank (1) is located laterally above the steering gear (3).
Preferably, the steering oil pump (7) is electrically driven.
Preferably, the steering gear (3) is in transmission connection with the steering pull rod (6) through a connecting rod assembly.
Preferably, the steering gear (3) is an electro-hydraulic steering gear.
The utility model has the advantages that: the utility model arranges the steering system components at the rear of the steering axle, reduces the length of the front suspension and the frame of the vehicle, reduces the turning radius of the vehicle and improves the maneuverability of the vehicle; the steering wheel, the steering shaft and other control mechanisms of the traditional tractor are not needed, the structure is simple, and the production cost is low. In addition, the traditional axle is adopted to replace a hydraulic steering axle system to realize steering, and compared with the hydraulic steering axle system, the production cost is further reduced.
Drawings
Fig. 1 is the utility model discloses a rearmounted electricity liquid steering system of steering gear's structural schematic.
In the figure:
1. a steering oil tank; 2. a frame; 3. a diverter; 4. a steering oil pipe; 5. a front steering shaft; 6. a steering tie rod; 7. a steering oil pump;
41. a first steering tubing; 42. a second steering tubing; 43. and a third steering oil pipe.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes to distinguish one from another.
As shown in fig. 1, the utility model provides a rearmounted electricity liquid steering system of steering gear, this steering system arrange in the steering axle rear side, including frame 2, preceding steering spindle 5, steering gear 3, steering linkage 6, steering oil pipe 4, steering oil pump 7 and steering oil jar 1.
The conventional arrangement of the steering system is optimized, and the system components are arranged on the rear side of the steering axle, so that the length of a front suspension of the vehicle and the length of a frame 2 are reduced, the turning radius of the vehicle is reduced, and the maneuverability of the vehicle is improved. Meanwhile, because the control mechanisms such as a steering wheel, a steering shaft and the like of the traditional tractor are omitted, the structure is simpler, and the production cost is low.
The operation of the steering system is briefly described below with reference to fig. 1:
in fig. 1, the steering oil pipe 4 includes a first steering oil pipe 41, a second steering oil pipe 42, and a third steering oil pipe 43. Wherein, the third steering oil pipe 43 connected between the steering oil tank 1 and the steering oil pump 7 is an oil inlet pipe for providing oil to the steering gear 3; the second steering oil pipe 42 connected between the steering oil tank 1 and the steering gear 3 is an oil return pipe for oil return; a first steering oil pipe 41 connected between the steering oil pump 7 and the steering gear 3 for supplying oil to the steering gear. When the steering system works, after the steering oil pump 7 is started, oil in the steering oil tank 1 is pumped into the steering gear 3 through the third steering oil pipe 43 and the first steering oil pipe 41, a hydraulic system in the steering gear 3 is subjected to a series of actions after receiving the oil, and finally drives the steering pull rod 6 which is in transmission connection with the steering gear 3 through the connecting rod assembly, and the steering pull rod 6 further drives the front steering shaft 5 to complete steering work.
When the wheels are straight ahead, in the idling state, the flow rate of the oil flowing from the steering oil pump 7 to the steering gear 3 is relatively low. In this condition, the steering gear 3 is positioned such that the oil from the steering oil pump 7 flows back to the steering oil tank 1 via the valve and the return line. The spool valve is further spring-biased to close the flow control valve as low pressure oil flows. With the flow control valve closed, the steering oil pump 7 is at a low pressure all the time, and all the liquid flows out of the steering oil pump 7 through the steering gear 3 valve and back into the steering oil tank 1.
When the engine speed increases, the steering oil pump 7 outputs more oil than the steering system requires. The increased amount of oil reduces the pressure at the output connection. This pressure reduction is simultaneously reflected on the spring side of the flow control valve, which relieves the steering oil pump 7 and the flow control valve is partially opened. Under such conditions, the excess liquid from the steering oil pump 7 flows back to the steering oil tank 1 through the flow control valve and the oil return pipe. If the steering wheel is turned, the liquid flowing out from the steering oil pump 7 floods the pressure chamber of the steering gear 3.
If the steering wheel is turned in one direction until the steering gear hits the rotation angle limiter, the steering oil pump 7 pressure becomes high. When the flow of the steering gear 3 stops moving, the liquid flowing out of the steering oil pump 7 is reduced, but the high pressure of the steering oil pump 7 is still applied to the piston through the steering gear 3 valve. The pressure at the outlet of the steering oil pump 7 is still high due to the reduction of the outflow liquid. This pressure is also applied to the spring of the flow control valve. When the preset pressure is reached, the safety valve is opened, and the opening degree of the flow valve is increased. This returns part of the high-pressure oil in the steering oil pump 7 to the steering oil tank 1, thereby limiting the maximum safe value of the pressure of the steering oil pump 7 and protecting the entire steering system.
Specifically, to reduce the length of the front overhang and frame 2 of the vehicle and to reduce the turning radius of the vehicle, the steering gear 3 is bolted to the rear of the frame 2, and the steering oil pump 7 is also bolted to the frame 2 or other structure that remains stationary relative to the frame 2 proximate to the steering gear 3. In other embodiments, the fixing manner between the steering gear 3 and the frame 2 is not limited to bolt connection, and may also be riveting, key pin connection, or snap connection, which is not described herein again.
Further, in order to prevent the oil from flowing backward into the steering oil tank 1, the steering oil tank 1 is disposed at a position higher than the steering gear 3, and specifically, the steering oil tank 1 is provided above and on the side of the steering gear.
In order to be suitable for an unmanned automobile and facilitate remote control, the steering mode of the rear electro-hydraulic steering system of the steering gear is electric control hydraulic steering. The steering gear 3 is an electro-hydraulic steering gear, the steering oil pump 7 is driven electrically, the steering oil pump 7 is connected with a steering oil pump controller, and the whole vehicle controller controls the steering oil pump 7 to be opened or closed by controlling the steering oil pump controller.
In order to control the rotation angle of the steering gear 3 through the vehicle control unit, a rotation angle sensor is further arranged on the rear electro-hydraulic steering system of the steering gear and used for feeding back the rotation angle of the front steering shaft 5 to the vehicle control unit. The vehicle control unit controls the steering speed and the steering angle of the wheels through feedback signals of the steering oil pump controller and the steering angle sensor.
In summary, the arrangement form of the utility model arranges the steering system components at the rear of the steering axle, reduces the length of the front suspension of the vehicle and the frame 2, reduces the turning radius of the vehicle, and improves the maneuverability of the vehicle; the steering wheel, the steering shaft and other control mechanisms of the traditional tractor are not needed, the structure is simple, and the production cost is low. In addition, the traditional axle is adopted to replace a hydraulic steering axle system to realize steering, and compared with the hydraulic steering axle system, the production cost is further reduced.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (9)
1. The utility model provides a rearmounted electricity liquid a steering system of steering gear, includes frame (2) and preceding steering spindle (5), its characterized in that, rearmounted electricity liquid a steering system of steering gear arranges in the steering axle rear side, still includes:
the steering gear (3), the said steering gear (3) is fixed on the rear portion of the said frame (2);
the steering pull rod (6) is connected between the front steering shaft (5) and the steering gear (3) and is used for driving the front steering shaft (5) to steer under the driving of the steering gear (3);
the steering oil pump (7) is connected with the steering gear (3) through a first steering oil pipe (41);
and the steering oil tank (1) is arranged above the frame (2), is connected with the steering gear (3) through a second steering oil pipe (42) and is connected with the steering oil pump (7) through a third steering oil pipe (43).
2. The rear mounted electro-hydraulic steering system of claim 1,
and the third steering oil pipe (43) is an oil inlet pipe and is used for providing oil for the steering oil pump (7).
3. The rear mounted electro-hydraulic steering system of claim 1,
the second steering oil pipe (42) is an oil return pipe and is used for oil liquid to flow back.
4. The rear mounted electro-hydraulic steering system of claim 1,
the steering oil pump (7) is connected with a steering oil pump controller, and the whole vehicle controller controls the steering oil pump controller to further control the steering oil pump (7) to be opened and closed.
5. The rear mounted electro-hydraulic steering system of claim 1,
and a corner sensor is also arranged on the rear electro-hydraulic steering system of the steering gear and used for feeding back the corner of the front steering shaft (5) to the vehicle control unit.
6. The rear mounted electro-hydraulic steering system of claim 1,
the steering oil tank (1) is located above the side of the steering gear (3).
7. The rear mounted electro-hydraulic steering system of claim 1,
the steering oil pump (7) is driven by an electric motor.
8. The rear mounted electro-hydraulic steering system of claim 1,
the steering gear (3) is in transmission connection with the steering pull rod (6) through a connecting rod assembly.
9. The rear mounted electro-hydraulic steering system of claim 8,
the steering gear (3) is an electro-hydraulic steering gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921721615.8U CN210882300U (en) | 2019-10-14 | 2019-10-14 | Rearmounted electricity liquid a steering system of steering gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921721615.8U CN210882300U (en) | 2019-10-14 | 2019-10-14 | Rearmounted electricity liquid a steering system of steering gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210882300U true CN210882300U (en) | 2020-06-30 |
Family
ID=71332469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921721615.8U Active CN210882300U (en) | 2019-10-14 | 2019-10-14 | Rearmounted electricity liquid a steering system of steering gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210882300U (en) |
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2019
- 2019-10-14 CN CN201921721615.8U patent/CN210882300U/en active Active
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