CN109649482B - Hydraulic steering system for vehicle - Google Patents
Hydraulic steering system for vehicle Download PDFInfo
- Publication number
- CN109649482B CN109649482B CN201910069330.9A CN201910069330A CN109649482B CN 109649482 B CN109649482 B CN 109649482B CN 201910069330 A CN201910069330 A CN 201910069330A CN 109649482 B CN109649482 B CN 109649482B
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- China
- Prior art keywords
- steering
- valve
- reversing valve
- manual reversing
- cylinder
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- 239000003921 oil Substances 0.000 description 44
- 230000007935 neutral effect Effects 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
Classifications
-
- 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
- B62D5/062—Details, component parts
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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 vehicle hydraulic steering system, which comprises a steering wheel mechanism and a steering cylinder, wherein the inlet end of the steering wheel mechanism is connected with a hydraulic power source, the two outlet ends of the steering wheel mechanism are respectively communicated with a left cavity and a right cavity of the steering cylinder, the vehicle hydraulic steering system also comprises a switch valve and a manual reversing valve, the manual reversing valve is provided with an oil inlet, a first working oil port and a second working oil port, the oil inlet of the manual reversing valve is connected with the hydraulic power source through the switch valve, and the first working oil port and the second working oil port are respectively communicated with the left cavity and the right cavity of the steering cylinder; and a piston rod of the steering oil cylinder is connected with a handle of the manual reversing valve. By adopting the hydraulic steering system of the vehicle, the wheel alignment operation is simple, the alignment precision is ensured, and the operation intensity of a driver is reduced.
Description
Technical Field
The present disclosure relates to steering systems, and particularly to a hydraulic steering system for a vehicle capable of quickly aligning wheels.
Background
Fig. 1 is a schematic diagram of a conventional hydraulic steering system for a vehicle, as shown in the drawing, the hydraulic steering system comprises a steering wheel mechanism 10 and a steering cylinder 20, wherein an inlet end of the steering wheel mechanism 10 is connected with a hydraulic power source, an oil return end is connected with an oil return tank, two outlet ends of the steering wheel mechanism 10 are respectively communicated with a left chamber 201 and a right chamber 202 of the steering cylinder 20, and hydraulic oil is input into the right chamber 202 or the left chamber 201 of the steering cylinder 20 to enable a piston 21 of the steering cylinder 20 to move leftwards or rightwards to deviate and drive a piston rod 22 to move leftwards or rightwards so as to realize leftwards or rightwards steering of wheels of the vehicle.
With the existing hydraulic steering system for vehicles, when the wheels need to be aligned, that is, the piston 21 of the steering cylinder 20 needs to be moved to the neutral position, the driver is usually required to actively align by observing and operating the steering wheel, the handle and the like of the steering wheel mechanism 10, which requires repeated operation adjustment by the driver, and the alignment may be inaccurate, especially for engineering machinery vehicles with lower speed and steering of front wheels and rear wheels, the repeated observation operation increases the operation intensity of the driver, and the alignment operation of the wheels is more complicated and difficult.
Disclosure of Invention
In order to solve the problems, the invention provides a hydraulic steering system of a vehicle, which can quickly return the wheels of the vehicle and reduce the operation intensity of a driver.
In order to achieve the above purpose, the hydraulic steering system for the vehicle comprises a steering wheel mechanism and a steering oil cylinder, wherein an inlet end of the steering wheel mechanism is connected with a hydraulic power source, two outlet ends of the steering wheel mechanism are respectively communicated with a left chamber and a right chamber of the steering oil cylinder, the hydraulic steering system for the vehicle further comprises a switch valve and a manual reversing valve, the manual reversing valve is provided with an oil inlet, a first working oil port and a second working oil port, the oil inlet of the manual reversing valve is connected with the hydraulic power source through the switch valve, and the first working oil port and the second working oil port are respectively communicated with the left chamber and the right chamber of the steering oil cylinder; a piston rod of the steering oil cylinder is connected with a handle of the manual reversing valve; when the piston of the steering oil cylinder is in the middle position, the oil inlet of the manual reversing valve is not communicated with the first working oil port and the second working oil port; when the piston of the steering oil cylinder deviates from the middle position to the left cavity, the piston rod of the steering oil cylinder drives the handle of the manual reversing valve, so that the oil inlet of the manual reversing valve is communicated with the first working oil port; when the piston of the steering oil cylinder deviates from the middle position to the right cavity, the piston rod of the steering oil cylinder drives the handle of the manual reversing valve, so that the oil inlet of the manual reversing valve is communicated with the second working oil port.
Preferably, a piston rod of the steering cylinder is connected with a handle of the manual reversing valve through a lever mechanism.
Preferably, the on-off valve adopts a two-position two-way valve.
Preferably, the manual reversing valve adopts a three-position four-way valve.
The hydraulic steering system of the vehicle can realize one-key centering through the connection of the operation switch valve no matter in which direction the wheels are steered, the wheel centering operation is simple, the centering precision is ensured, the tedious and inaccurate operation of a driver is avoided, and the operation intensity of the driver is reduced.
Drawings
FIG. 1 is a schematic illustration of a prior art hydraulic steering system for a vehicle;
Fig. 2 is a schematic view of a hydraulic steering system for a vehicle of the present invention.
Detailed Description
The terms "left", "right", and the like in the present invention are used only to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed accordingly.
In order to keep the following description of the disclosed embodiments of the present invention clear and concise, the detailed description of known functions and known components have been omitted. Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 2, the hydraulic steering system for a vehicle of the present invention includes a steering wheel mechanism 10 and a steering cylinder 20, wherein an inlet end of the steering wheel mechanism 10 is connected with a hydraulic power source, the hydraulic power source may be a hydraulic pump, two outlet ends of the steering wheel mechanism 10 are respectively communicated with a left chamber 201 and a right chamber 202 of the steering cylinder 20, and hydraulic oil is input into the right chamber 202 or the left chamber 201 of the steering cylinder 20 to cause a piston 21 of the steering cylinder 20 to move left or right to deviate, so as to drive a piston rod 22 to move left or right, thereby realizing left or right steering of wheels of the vehicle. When the piston 21 of the steering cylinder 20 is in the neutral position, the wheels of the vehicle are not steered to the left or right, that is, the piston 21 of the steering cylinder 20 is in a position where the wheels are not steered, and the piston 21 of the steering cylinder 20 is usually in the middle of the steering cylinder 20.
The hydraulic steering system of the vehicle further comprises a switch valve 30 and a manual reversing valve 40, wherein the manual reversing valve 40 is provided with an oil inlet P, a first working oil port A, a second working oil port B and an oil return port T, and the oil return port T can be closed or connected with an oil return tank. The oil inlet P of the manual reversing valve 40 is connected with the hydraulic power source through the switch valve 30, and the first working oil port a and the second working oil port B are respectively communicated with the left chamber 201 and the right chamber 202 of the steering cylinder 20; the piston rod 22 of the steering cylinder 20 is connected to the handle 41 of the manual directional valve 40.
When the piston 21 of the steering cylinder 20 is in the middle position, the oil inlet P of the manual reversing valve 40 is not communicated with the first working oil port a and the second working oil port B; when the piston 21 of the steering cylinder 20 deviates from the middle position to the left chamber 201, the piston rod 22 of the steering cylinder 20 drives the handle 41 of the manual directional valve 40 to enable the oil inlet P of the manual directional valve 40 to be communicated with the first working oil port a, and when the switch valve 30 is communicated, the hydraulic power source supplies oil to the left chamber 201 to enable the piston 21 to return to the middle position; when the piston 21 of the steering cylinder 20 is deviated from the middle position to the right chamber 202, the piston rod 22 of the steering cylinder 20 drives the handle 41 of the manual directional valve 40 to connect the oil inlet P of the manual directional valve 40 with the second working oil port B, and when the switching valve 30 is connected, the hydraulic power source supplies oil to the right chamber 202 to return the piston 21 to the middle position. When the on-off valve 30 is opened, the hydraulic power source does not supply oil to the left and right chambers 201 and 202, and thus the steering cylinder 20 is not operated. When the on-off valve 30 is turned on but the piston 21 of the steering cylinder 20 is at the neutral position, the oil inlet P of the manual directional valve 40 is not turned on with the first and second hydraulic ports a and B, and thus the steering cylinder 20 does not operate.
With the hydraulic steering system of the present invention, when the vehicle is steered by the steering wheel mechanism 10, the piston 21 of the steering cylinder 20 is deviated from the center position toward the left and right chambers 201 and 202. If the driver needs to return the wheels, the wheels can be returned only by operating the on-off valve 30.
The on-off valve 30 may be controlled by a button to implement a one-touch operation. The on-off valve 30 is preferably a two-position two-way valve. The manual directional valve 40 is preferably a three-position four-way valve.
The piston rod 22 of the steering cylinder 20 is connected with the handle 41 of the manual directional valve 40 through a lever mechanism 50. The two ends of the lever mechanism 50 are respectively hinged with the piston rod 22 and the handle 41, and the stroke of the piston 21 and the stroke of the valve core of the manual reversing valve 40 can be matched by adjusting the fulcrum position of the lever mechanism 50.
As described above, exemplary embodiments of the present invention are described in detail with reference to the accompanying drawings. It should be understood that the invention is not intended to be limited to these specific details as set forth in the following description. Equivalent or similar changes to the structure and features of the exemplary embodiments may be made without departing from the spirit and scope of the present invention, which changes will also fall within the protection scope of the invention as defined in the appended claims.
Claims (2)
1. The hydraulic steering system for the vehicle comprises a steering wheel mechanism and a steering cylinder, wherein the inlet end of the steering wheel mechanism is connected with a hydraulic power source, the two outlet ends of the steering wheel mechanism are respectively communicated with a left chamber and a right chamber of the steering cylinder, the hydraulic steering system for the vehicle is characterized by further comprising a switch valve and a manual reversing valve,
The manual reversing valve is provided with an oil inlet, a first working oil port and a second working oil port, the oil inlet of the manual reversing valve is connected with the hydraulic power source through the switch valve, and the first working oil port and the second working oil port are respectively communicated with a left chamber and a right chamber of the steering oil cylinder;
A piston rod of the steering oil cylinder is connected with a handle of the manual reversing valve;
When the piston of the steering oil cylinder is in the middle position, the oil inlet of the manual reversing valve is not communicated with the first working oil port and the second working oil port;
When the piston of the steering oil cylinder deviates from the middle position to the left cavity, the piston rod of the steering oil cylinder drives the handle of the manual reversing valve to enable the oil inlet of the manual reversing valve to be communicated with the first working oil port, and when the switch valve is communicated, the hydraulic power source supplies oil to the left cavity to enable the piston to return to the middle position;
When the piston of the steering oil cylinder deviates from the middle position to the right cavity, the piston rod of the steering oil cylinder drives the handle of the manual reversing valve to enable the oil inlet of the manual reversing valve to be communicated with the second working oil port, and when the switch valve is communicated, the hydraulic power source supplies oil to the right cavity to enable the piston to return to the middle position;
The piston rod of the steering oil cylinder is connected with the handle of the manual reversing valve through a lever mechanism;
the switch valve adopts a two-position two-way valve.
2. The vehicle hydraulic steering system of claim 1 wherein the manual diverter valve is a three-position four-way valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910069330.9A CN109649482B (en) | 2019-01-24 | 2019-01-24 | Hydraulic steering system for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910069330.9A CN109649482B (en) | 2019-01-24 | 2019-01-24 | Hydraulic steering system for vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109649482A CN109649482A (en) | 2019-04-19 |
| CN109649482B true CN109649482B (en) | 2024-05-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910069330.9A Active CN109649482B (en) | 2019-01-24 | 2019-01-24 | Hydraulic steering system for vehicle |
Country Status (1)
| Country | Link |
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| CN (1) | CN109649482B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110371186B (en) * | 2019-08-27 | 2024-03-08 | 廊坊中博工程机械设备制造有限公司 | Integrated chassis four-wheel steering device, working method and multifunctional working vehicle |
| CN110861708B (en) * | 2019-12-17 | 2023-06-27 | 重庆达航工业有限公司 | Four-wheel steering system and steering control method for aircraft tractor |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6317175A (en) * | 1986-07-10 | 1988-01-25 | Atsugi Motor Parts Co Ltd | Power steering device |
| JPH03220066A (en) * | 1990-01-26 | 1991-09-27 | Nissan Motor Co Ltd | Four-wheel steering device for vehicle |
| JPH06127400A (en) * | 1992-10-23 | 1994-05-10 | Mitsubishi Motors Corp | Totally hydraulic large steering angle antiphase four-wheel steering system |
| US5761627A (en) * | 1993-10-16 | 1998-06-02 | Trw Fahrewrksysteme Gmbh & Co. Kg | Power-assisted steering system |
| DE10344662A1 (en) * | 2003-09-25 | 2005-05-04 | Cuadro Diogenes Perez | Hydraulic steering system for motor vehicle has regulating pump for high frequency intermittent transport operation as hydraulic pressure source for operating servo motor in one or other direction |
| JP2010137782A (en) * | 2008-12-12 | 2010-06-24 | Nissan Motor Co Ltd | Electrohydraulic power steering device |
| CN202243640U (en) * | 2011-08-12 | 2012-05-30 | 天津市松正电动科技有限公司 | Energy-saving hydraulic power-assisted steering system |
| CN105539573A (en) * | 2015-12-07 | 2016-05-04 | 三一汽车起重机械有限公司 | Steering active returning system and method for all-terrain crane |
| CN108891481A (en) * | 2018-07-17 | 2018-11-27 | 四川川龙拖拉机制造有限公司 | 4-wheel Steering Control System, carriage and four-wheel tractor |
| CN209581613U (en) * | 2019-01-24 | 2019-11-05 | 安百拓（南京）建筑矿山设备有限公司 | Vehicle hydraulic steering system |
-
2019
- 2019-01-24 CN CN201910069330.9A patent/CN109649482B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6317175A (en) * | 1986-07-10 | 1988-01-25 | Atsugi Motor Parts Co Ltd | Power steering device |
| JPH03220066A (en) * | 1990-01-26 | 1991-09-27 | Nissan Motor Co Ltd | Four-wheel steering device for vehicle |
| JPH06127400A (en) * | 1992-10-23 | 1994-05-10 | Mitsubishi Motors Corp | Totally hydraulic large steering angle antiphase four-wheel steering system |
| US5761627A (en) * | 1993-10-16 | 1998-06-02 | Trw Fahrewrksysteme Gmbh & Co. Kg | Power-assisted steering system |
| DE10344662A1 (en) * | 2003-09-25 | 2005-05-04 | Cuadro Diogenes Perez | Hydraulic steering system for motor vehicle has regulating pump for high frequency intermittent transport operation as hydraulic pressure source for operating servo motor in one or other direction |
| JP2010137782A (en) * | 2008-12-12 | 2010-06-24 | Nissan Motor Co Ltd | Electrohydraulic power steering device |
| CN202243640U (en) * | 2011-08-12 | 2012-05-30 | 天津市松正电动科技有限公司 | Energy-saving hydraulic power-assisted steering system |
| CN105539573A (en) * | 2015-12-07 | 2016-05-04 | 三一汽车起重机械有限公司 | Steering active returning system and method for all-terrain crane |
| CN108891481A (en) * | 2018-07-17 | 2018-11-27 | 四川川龙拖拉机制造有限公司 | 4-wheel Steering Control System, carriage and four-wheel tractor |
| CN209581613U (en) * | 2019-01-24 | 2019-11-05 | 安百拓（南京）建筑矿山设备有限公司 | Vehicle hydraulic steering system |
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| CN109649482A (en) | 2019-04-19 |
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