CN212047566U - Double-loop steering oil way of automobile steering device - Google Patents
Double-loop steering oil way of automobile steering device Download PDFInfo
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- CN212047566U CN212047566U CN202020580832.6U CN202020580832U CN212047566U CN 212047566 U CN212047566 U CN 212047566U CN 202020580832 U CN202020580832 U CN 202020580832U CN 212047566 U CN212047566 U CN 212047566U
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Abstract
The utility model relates to a double circuit of auto steering ware turns to oil circuit belongs to car hydraulic pressure power assisted steering technical field. The double-loop steering oil way comprises a hydraulic oil tank, a main pump, an emergency pump, a switching valve and a power-assisted oil cylinder; the hydraulic oil tank is respectively communicated with the main pump and the emergency pump; the main pump is communicated with the power-assisted main valve through an overflow valve A and a switching valve, the main pump is communicated with the power-assisted auxiliary valve through a communication pipe, the power-assisted auxiliary valve is communicated with the power-assisted oil cylinder through a communication pipe, and the emergency pump is communicated with the power-assisted main valve through an overflow valve B and a switching valve. The double-loop steering oil way has the advantages of safety, reliability, emergency steering function and seamless switching, solves the problems of low safety factor and easy failure of steering of the existing steering system, and meets the safety requirement of automobile hydraulic power-assisted steering.
Description
Technical Field
The utility model relates to a double circuit of auto steering ware turns to oil circuit belongs to car hydraulic pressure power assisted steering technical field.
Background
The traditional automobile hydraulic power-assisted steering system mainly aims at meeting the light steering function of an automobile, along with the progress of the times, the requirements for automobile steering also pay more attention to the aspects of safety, comfort and the like, and special vehicles such as engineering vehicles, military vehicles and the like have higher requirements for steering safety due to the severe use working conditions.
And the traditional automobile hydraulic power-assisted steering system can only rely on manpower to forcibly steer under the condition that a power system fails, and the risk coefficient is very high. Therefore, on the basis of the existing steering system, the emergency steering function is added to realize emergency steering, so that the defects of the traditional hydraulic power-assisted steering system are overcome, and the safety level of the steering system is further improved.
Disclosure of Invention
The utility model aims to provide a: the automobile steering device double-loop steering oil way can effectively solve the problems that an existing steering system is low in safety factor and easy to fail in steering, achieves emergency steering of an automobile steering system, and improves the safety level of the steering system.
The utility model discloses a realize above-mentioned purpose through following technical scheme:
a double-loop steering oil way of an automobile steering gear comprises a hydraulic oil tank, a main pump, an emergency pump, a switching valve and a power-assisted oil cylinder; the method is characterized in that: the hydraulic oil tank is respectively communicated with the main pump and the emergency pump; the main pump is communicated with the power-assisted main valve through an overflow valve A and a switching valve, the main pump is communicated with the power-assisted auxiliary valve through a communication pipe, the power-assisted auxiliary valve is communicated with the power-assisted oil cylinder through a communication pipe, the emergency pump is communicated with the power-assisted main valve through an overflow valve B and a switching valve, and the power-assisted auxiliary valve and the power-assisted main valve are respectively communicated with the hydraulic oil tank through a steering gear.
A safety valve A is arranged on the power-assisted main valve; the auxiliary booster valve is provided with a safety valve B.
The power-assisted main valve is provided with a main valve oil inlet and a main valve oil return port; the oil inlet of the main valve is respectively communicated with the switching valve and the screw oil groove on the steering gear, and the oil return port of the main valve is respectively communicated with the screw oil groove on the steering gear and the hydraulic oil tank.
And the auxiliary power-assisted valve is provided with an auxiliary valve oil inlet and an auxiliary valve oil return port, the auxiliary valve oil inlet is respectively communicated with the main pump and a valve sleeve oil groove on the steering gear, and the auxiliary valve oil return port is respectively communicated with the valve sleeve oil groove on the steering gear and the hydraulic oil tank.
The utility model discloses technical advantage lies in:
the automobile double-loop steering oil way has the characteristics of safety, reliability, emergency steering function and seamless switching, in the running process of an automobile, under the normal condition, a steering main system and an emergency system run synchronously, the steering main system plays a role in actual steering power assistance, and the emergency system does not play a role in power assistance although running; when the main steering system of the whole vehicle is damaged or fails, the emergency system is directly switched seamlessly to realize power-assisted steering; for traditional a steering system, the utility model discloses there are 2 sets of independent fuel feeding loop systems, and it is lower at normal operating in-process emergency system energy consumption, solved that current a steering system has the factor of safety low and turn to the problem that became invalid easily, satisfied car hydraulic pressure power assisted steering's safety demand.
Drawings
Fig. 1 is a schematic structural view of the present invention;
in the figure: the hydraulic control system comprises a main pump 1, an emergency pump 2, an overflow valve A3, an overflow valve B4, a switching valve 5, a safety valve A6, a safety valve B7, a safety valve B8, a power auxiliary valve 9, a power main valve 10, a steering gear 11, a power oil cylinder 12 and a hydraulic oil tank.
Detailed Description
The double-loop steering oil way of the automobile steering device comprises a hydraulic oil tank 12, a main pump 1, an emergency pump 2, a switching valve 5 and a power-assisted oil cylinder 11. A hydraulic oil tank 12 of the automobile hydraulic system is respectively communicated with the main pump 1 and the emergency pump 2; the main pump 1 communicates with the booster main valve 9 via a relief valve a3 and a switching valve 5, and the emergency pump 2 communicates with the booster main valve 9 via a relief valve B4 and a switching valve 5. A main valve oil inlet and a main valve oil return port are formed in the power-assisted main valve 9; the main valve oil inlet is respectively communicated with the switching valve 5 and the screw oil groove on the steering gear 10, and the main valve oil return is respectively communicated with the screw oil groove on the steering gear 10 and the hydraulic oil tank 12, so that a main valve circulating oil passage is formed.
The main pump 1 is communicated with the auxiliary power-assisted valve 8 through a communicating pipe, and the auxiliary power-assisted valve 8 is communicated with the power-assisted oil cylinder 11 through a communicating pipe. An auxiliary valve oil inlet and an auxiliary valve oil return port are formed in the auxiliary power-assisted valve 8, the auxiliary valve oil inlet is respectively communicated with the main pump 1 and the valve sleeve oil grooves in the steering gear 10, and the auxiliary valve oil return port is respectively communicated with the valve sleeve oil groove in the steering gear 10 and the hydraulic oil tank 12, so that an auxiliary valve circulating oil passage is formed.
A safety valve A is arranged on a power-assisted main valve 9 of a double-loop steering oil way of the automobile steering device; the auxiliary booster valve 8 is provided with a safety valve B for limiting the maximum pressure of the hydraulic oil supplied thereto during operation.
The double-loop steering oil path of the automobile steering gear is connected with an overflow valve A3 through a main pump 1, then is connected with a switching valve 5 and a power-assisted auxiliary valve 8 on a double-loop steering gear 10, and the power-assisted auxiliary valve 8 is connected with a power-assisted oil cylinder 11 so as to assist the power-assisted auxiliary valve 8 to work. The switching valve 5 is connected with a power-assisted main valve 9 on a double-loop steering gear 10 to form a main steering system; the emergency pump 2 is connected with a relief valve B4, a switching valve 5 and a power-assisted main valve 9 on the double-circuit steering gear 10 to form an emergency system. And the power-assisted main valve 9 and the power-assisted auxiliary valve 8 work synchronously and independently, so that the steering power is continuously provided through automatic switching of the switching valve under the condition that the main pump 1 fails, and the steering function of the whole vehicle is realized.
In the running process of an automobile, under normal conditions, a main steering system works, hydraulic oil in a hydraulic oil tank 12 passes through a main pump 1, a part of the hydraulic oil enters a power-assisted main valve 9 through a switching valve 5, the other part of the hydraulic oil enters a power-assisted auxiliary valve 8, oil pressure is established through the control of the power-assisted main valve 9 and the power-assisted auxiliary valve 8, a self oil cylinder and a power-assisted oil cylinder 11 of a steering gear 10 are pushed to move to realize hydraulic power assistance, an overflow valve A3 in the main steering system carries out pressure relief protection on an oil path, the damage of high pressure on the main pump 1 can be reduced to a great extent, and safety valves A6 and B7 on the power-assisted main valve 9; meanwhile, the emergency system is also in synchronous operation but is not in function, and hydraulic oil in the oil tank enters the switching valve 5 through the emergency pump 2 and is directly distributed into the oil return channel to return to the oil tank.
When the main steering system is damaged or fails, the emergency system is directly and seamlessly switched under the action of the switching valve 5, hydraulic oil in the hydraulic oil tank 12 enters the switching valve 5 through the emergency pump 2 and is switched to enter the power-assisted main valve 9 on the steering gear 10, and the hydraulic pressure is established and the self oil cylinder of the steering gear is pushed to move through the control of the power-assisted main valve 9 to realize emergency hydraulic power-assisted steering. Similarly, an overflow valve B4 connected in sequence with the emergency pump 2 performs pressure relief protection on an oil way, and a safety valve A6 performs high-pressure unloading protection on an oil way system. In this case, the sub-valve 8 of the steering gear 10 is not operated, and only the servo-assisted main valve 9 is operated. The double-loop steering oil way has the characteristics of safety, reliability, emergency steering function and seamless switching, and when the main steering system of the whole vehicle is damaged or fails, the emergency system is directly switched seamlessly to realize power-assisted steering; the problem of current a steering system have that factor of safety is low and turn to the easy inefficacy is solved, the safety demand that has satisfied car hydraulic pressure power assisted steering.
Claims (4)
1. A double-loop steering oil way of an automobile steering gear comprises a hydraulic oil tank (12), a main pump (1), an emergency pump (2), a switching valve (5) and a power-assisted oil cylinder (11); the method is characterized in that: the hydraulic oil tank (12) is respectively communicated with the main pump (1) and the emergency pump (2); the main pump (1) is communicated with a power-assisted main valve (9) through an overflow valve A (3) and a switching valve (5), the main pump (1) is communicated with a power-assisted auxiliary valve (8) through a communication pipe, the power-assisted auxiliary valve (8) is communicated with a power-assisted oil cylinder (11) through a communication pipe, the emergency pump (2) is communicated with the power-assisted main valve (9) through an overflow valve B (4) and a switching valve (5), and the power-assisted auxiliary valve (8) and the power-assisted main valve (9) are respectively communicated with a hydraulic oil tank (12) through a steering gear (10).
2. The automobile steering gear double-circuit steering oil way according to claim 1, characterized in that: a safety valve A (6) is arranged on the power-assisted main valve (9); the auxiliary booster valve (8) is provided with a safety valve B (7).
3. The automobile steering gear double-circuit steering oil way according to claim 2, characterized in that: a main valve oil inlet and a main valve oil return port are formed in the power-assisted main valve (9); an oil inlet of a main valve is respectively communicated with the switching valve (5) and a screw oil groove on the steering gear (10), and an oil return port of the main valve is respectively communicated with the screw oil groove on the steering gear (10) and the hydraulic oil tank (12).
4. The automobile steering gear double-circuit steering oil way according to claim 2, characterized in that: an auxiliary valve oil inlet and an auxiliary valve oil return port are formed in the power-assisted auxiliary valve (8), the auxiliary valve oil inlet is communicated with the main pump (1) and a valve sleeve oil groove in the steering gear (10) respectively, and the auxiliary valve oil return port is communicated with the valve sleeve oil groove in the steering gear (10) and the hydraulic oil tank (12) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020580832.6U CN212047566U (en) | 2020-04-18 | 2020-04-18 | Double-loop steering oil way of automobile steering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020580832.6U CN212047566U (en) | 2020-04-18 | 2020-04-18 | Double-loop steering oil way of automobile steering device |
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| Publication Number | Publication Date |
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| CN212047566U true CN212047566U (en) | 2020-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020580832.6U Active CN212047566U (en) | 2020-04-18 | 2020-04-18 | Double-loop steering oil way of automobile steering device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114312994A (en) * | 2022-01-10 | 2022-04-12 | 中国重汽集团济南动力有限公司 | Hydraulic steering power assisting device and system for multi-shaft vehicle |
-
2020
- 2020-04-18 CN CN202020580832.6U patent/CN212047566U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114312994A (en) * | 2022-01-10 | 2022-04-12 | 中国重汽集团济南动力有限公司 | Hydraulic steering power assisting device and system for multi-shaft vehicle |
| CN114312994B (en) * | 2022-01-10 | 2023-04-11 | 中国重汽集团济南动力有限公司 | Hydraulic steering power assisting device and system for multi-shaft vehicle |
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