CN221144871U - Proportion steering valve group for small-sized vehicle - Google Patents
Proportion steering valve group for small-sized vehicle Download PDFInfo
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- CN221144871U CN221144871U CN202323210750.5U CN202323210750U CN221144871U CN 221144871 U CN221144871 U CN 221144871U CN 202323210750 U CN202323210750 U CN 202323210750U CN 221144871 U CN221144871 U CN 221144871U
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- 239000003921 oil Substances 0.000 claims abstract description 77
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 6
- 238000013016 damping Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 2
- 230000002159 abnormal effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
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Abstract
The utility model relates to a small-sized vehicle proportional steering valve group which sequentially comprises an oil inlet, an oil return port, a filter, a proportional flow valve, an electromagnetic directional valve, a hydraulic control one-way valve and oil ports of a left steering cylinder and a right steering cylinder; when no person drives, hydraulic oil enters the main oil way through the oil inlet, sequentially passes through the filter and the proportional flow valve, and then enters the oil ports of the left steering oil cylinder and the right steering oil cylinder through the control shunt of the electromagnetic reversing valve, the left steering oil cylinder and the right steering oil cylinder are correspondingly provided with hydraulic control one-way valves, and the outlets of the hydraulic control one-way valves are correspondingly communicated with the oil ports of the left steering oil cylinder and/or the two steering oil cylinders; when in manual driving, a logic valve and a one-way throttle valve are sequentially arranged on an oil way in front of the proportional flow valve, and an outlet of the one-way throttle valve is communicated to the steering gear; the device also comprises a pressure sensor arranged between the logic valve and the one-way throttle valve; the structure of the utility model reduces the space occupation rate; the overall control precision is high, and the following performance is strong; the system has high stability and no abnormal sound.
Description
Technical Field
The utility model relates to the technical field of hydraulic power, in particular to a small-sized proportional steering valve group for a vehicle, which is matched with an electric control part to realize closed-loop control.
Background
Steering systems currently applied to wheeler vehicles are broadly divided into three categories: the system comprises a rod system steering system, a proportional steering system of the rod system steering system and a servo steering system of the rod system steering system.
The three steering systems have the following defects: the first is limited by the structure of the bar system, which has large occupied space, laborious operation and large turning radius; the second type generally adopts a three-position four-way electromagnetic proportional reversing valve, and the valve core can realize the reversing of an oil way only after moving a preset distance during reversing due to the limitation of the structure of the proportional electromagnetic reversing valve, namely, a certain dead zone and hysteresis exist in the reversing by the movement of the valve core; and thirdly, due to the characteristics of zero dead zone and quick response of the servo valve, better dynamic characteristics and quick response can be obtained. However, the servo valve is sensitive to the cleanliness of hydraulic oil, has poor pollution resistance, is easy to be blocked, and has high price, thereby increasing the cost of the whole vehicle. In addition, it is known that there is a large loss of functionality Δp between the spools of the servo valve, which makes the hydraulic system severely warm, which makes the servo steering system extremely prone to failure.
All the three steering systems are not suitable for unmanned driving of the small-sized vehicle, and a proportional steering valve group for the small-sized vehicle is developed for matching with a steering device of the small-sized vehicle.
Disclosure of utility model
The utility model aims to solve the defects and shortcomings in the prior art, and provides the small-sized vehicle proportional steering valve group which is compact in structure, small in occupied space, stable in system and free from the influence of load on flow in a certain range.
The specific technical scheme is as follows: the small-sized vehicle proportional steering valve group sequentially comprises an oil inlet, an oil return port, a filter, a proportional flow valve, an electromagnetic directional valve, a hydraulic control one-way valve and oil ports of a left steering cylinder and a right steering cylinder;
When no person drives, hydraulic oil enters the main oil way through the oil inlet, sequentially passes through the filter and the proportional flow valve, and then enters the oil ports of the left steering oil cylinder and the right steering oil cylinder through the control shunt of the electromagnetic reversing valve, the left steering oil cylinder and the right steering oil cylinder are correspondingly provided with hydraulic control one-way valves, and the outlets of the hydraulic control one-way valves are correspondingly communicated with the oil ports of the left steering oil cylinder and/or the two steering oil cylinders;
An oil return port is also arranged on the valve group;
When in manual driving, a logic valve and a one-way throttle valve are sequentially arranged on an oil way in front of the proportional flow valve, and an outlet of the one-way throttle valve is communicated to the steering gear;
the device also comprises a pressure sensor arranged between the logic valve and the one-way throttle valve;
further, the hydraulic control system also comprises an overflow valve, a damping valve and a shuttle valve which are arranged between the logic valve and the hydraulic control one-way, and the overflow valve is communicated with the oil return port.
Further, the hydraulic fluid pump also comprises a pressure measuring oil port M arranged on the main oil way.
Further, the electromagnetic reversing valve is a three-position four-way Y-shaped electromagnetic reversing valve, and the working voltage is DC24V.
Furthermore, the filter, the proportional flow valve, the electromagnetic directional valve, the hydraulic control one-way valve, the logic valve, the pressure measuring joint, the pressure sensor, the overflow valve, the shuttle valve and the one-way throttle valve are integrated on a valve block in a threaded plug-in or plate-type or pipe-type connection mode.
Compared with the prior art, the utility model has the beneficial effects that: the utility model has more compact and simple structure and reduced space occupation rate; the whole installation is more convenient, the operation is simpler, the whole control precision is high, and the following performance is strong; the system has high stability and no abnormal sound.
Drawings
Fig. 1 is a hydraulic schematic of the system of the present utility model.
Fig. 2 is a schematic diagram of the structure of the present utility model.
FIG. 3 is a schematic diagram of a second embodiment of the present utility model.
Reference numerals: 1. the hydraulic control system comprises an oil inlet, 2, a proportional flow valve, 3, a hydraulic control one-way valve, 4, a logic valve, 5, a pressure sensor, 6, a filter, 7, an electromagnetic directional valve, 8, an overflow valve, 9, a shuttle valve, 10, a one-way throttle valve, 11, damping, 12, a pressure measuring oil port M,13, an oil return port, 14, a pressure detecting port PX,15, a right steering oil cylinder interface, 16 and a left steering oil cylinder interface.
Detailed Description
The utility model will now be described in further detail with reference to the accompanying drawings, without limiting the scope of the utility model.
The utility model provides a small-size automobile-used proportion steering valve group which characterized in that: the hydraulic control system comprises an oil inlet 1, an oil return port 13, a filter 6, a proportional flow valve 2, an electromagnetic reversing valve 7, a hydraulic control one-way valve 3 and oil ports of a left steering cylinder and a right steering cylinder in sequence;
When no person drives, hydraulic oil enters a main oil way through the oil inlet 1, sequentially passes through the filter 6 and the proportional flow valve 2, and then enters the oil ports of the left steering oil cylinder and the right steering oil cylinder through the control branch of the electromagnetic reversing valve 7, the left steering oil cylinder and the right steering oil cylinder are correspondingly provided with the hydraulic control one-way valve 3, and the outlet of the hydraulic control one-way valve 3 is correspondingly communicated with the oil ports of the left steering oil cylinder and/or the two steering oil cylinders;
the utility model arranges a filter 6 in front of the proportional flow valve for preventing the proportional flow valve 2 from being blocked.
The hydraulic lock is formed by the left hydraulic control one-way valve 3 and the right hydraulic control one-way valve 3, so that the pressure maintaining function of the left rotary cylinder and the right rotary cylinder is realized;
The utility model also comprises a pressure sensor 5 arranged between the logic valve 4 and the one-way throttle valve 10; when no person drives, the opening of the proportional steering valve can be controlled by the signals acquired by the pressure sensor 5 in real time, so that the flow entering the electromagnetic directional valve 7 is controlled, the hydraulic control one-way valve 3 and the steering device are controlled, and finally the purpose of controlling the steering angle is achieved.
The valve group is also provided with an oil return port 13 for system oil return;
when in manual driving, a logic valve 4 and a one-way throttle valve 10 are sequentially arranged on an oil way in front of the proportional flow valve 2, and the outlet of the one-way throttle valve 10 is communicated with a steering gear;
During manual driving, the hydraulic oil in the main loop is unloaded to the steering gear through the logic valve 4 and the one-way throttle valve 10; meanwhile, the back pressure of the system can be increased through the one-way throttle valve 10 behind the logic valve 4, so that abnormal sound of the logic valve 4 is effectively prevented;
Further, the present utility model is provided with a relief valve 8, a damping 11 (not labeled in fig. 2 and 3 because of being integrated inside the valve block) and a shuttle valve 9 arranged between the logic valve 4 and the pilot operated check, wherein the relief valve 8 is in communication with an oil return port 13. The control device is used for preventing the logic valve 4 from unloading when the steering cylinder is controlled in an unmanned mode.
Furthermore, the utility model is also provided with a pressure measuring oil port M12 on the main oil way for measuring pressure and overhauling.
Preferably, the electromagnetic reversing valve 7 is a three-position four-way Y-shaped electromagnetic reversing valve 7, and the working voltage is DC24V.
Preferably, the filter 6, the proportional flow valve 2, the electromagnetic directional valve 7, the hydraulic control one-way valve 3, the logic valve 4, the pressure measuring joint, the pressure sensor 5, the overflow valve 8, the shuttle valve 9 and the one-way throttle valve 10 are integrated on a valve block in a threaded plug-in or plate-type or pipe-type connection mode.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a small-size automobile-used proportion steering valve group which characterized in that: the hydraulic control system comprises an oil inlet, an oil return port, a filter, a proportional flow valve, an electromagnetic reversing valve, a hydraulic control one-way valve, oil ports of a left steering oil cylinder and an oil port of a right steering oil cylinder;
When no person drives, hydraulic oil enters the main oil way through the oil inlet, sequentially passes through the filter and the proportional flow valve, and then enters the oil ports of the left steering oil cylinder and the right steering oil cylinder through the control shunt of the electromagnetic reversing valve, the left steering oil cylinder and the right steering oil cylinder are correspondingly provided with hydraulic control one-way valves, and the outlets of the hydraulic control one-way valves are correspondingly communicated with the oil ports of the left steering oil cylinder and/or the two steering oil cylinders;
An oil return port is also arranged on the valve group;
When in manual driving, a logic valve and a one-way throttle valve are sequentially arranged on an oil way in front of the proportional flow valve, and an outlet of the one-way throttle valve is communicated to the steering gear;
The device also comprises a pressure sensor arranged between the logic valve and the one-way throttle valve.
2. A compact vehicle proportional valve set as claimed in claim 1, wherein: the hydraulic control system further comprises an overflow valve, a damping valve and a shuttle valve which are arranged between the logic valve and the hydraulic control one-way valve, and the overflow valve is communicated with the oil return port.
3. A compact vehicle proportional valve set as claimed in claim 1, wherein: the hydraulic fluid pressure measuring device also comprises a pressure measuring oil port M arranged on the main oil way.
4. A compact vehicle proportional valve set as claimed in claim 3, wherein: the electromagnetic reversing valve is a three-position four-way Y-shaped electromagnetic reversing valve, and the working voltage is DC24V.
5. A compact car proportional valve set as claimed in any one of claims 1 to 4, wherein: the filter, the proportional flow valve, the electromagnetic directional valve, the hydraulic control one-way valve, the logic valve, the pressure measuring connector, the pressure sensor, the overflow valve, the shuttle valve and the one-way throttle valve are integrated on one valve block in a threaded plug-in or plate-type connection or pipe-type connection mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323210750.5U CN221144871U (en) | 2023-11-28 | 2023-11-28 | Proportion steering valve group for small-sized vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323210750.5U CN221144871U (en) | 2023-11-28 | 2023-11-28 | Proportion steering valve group for small-sized vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221144871U true CN221144871U (en) | 2024-06-14 |
Family
ID=91383875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323210750.5U Active CN221144871U (en) | 2023-11-28 | 2023-11-28 | Proportion steering valve group for small-sized vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221144871U (en) |
-
2023
- 2023-11-28 CN CN202323210750.5U patent/CN221144871U/en active Active
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