CN118025307A - Novel steering system of electric control double-hydraulic power steering gear - Google Patents
Novel steering system of electric control double-hydraulic power steering gear Download PDFInfo
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- CN118025307A CN118025307A CN202410337939.0A CN202410337939A CN118025307A CN 118025307 A CN118025307 A CN 118025307A CN 202410337939 A CN202410337939 A CN 202410337939A CN 118025307 A CN118025307 A CN 118025307A
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- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000009347 mechanical transmission Effects 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 84
- 239000010720 hydraulic oil Substances 0.000 description 4
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Abstract
The invention relates to the technical field of steering systems, and provides a novel steering system of an electric control double-hydraulic power steering device, which aims to solve the defects of insufficient steering displacement and heavy steering of a large multi-shaft steering vehicle in the prior art.
Description
Technical Field
The invention relates to the technical field of steering systems, in particular to a novel steering system of an electric control double-hydraulic power-assisted steering gear.
Background
With the development of large-scale engineering vehicles, the requirements of the large-scale engineering vehicles, particularly multi-axle steering vehicles, on the displacement and portability of a hydraulic power steering system are higher and higher, the steering speed of a single hydraulic power steering device is slower due to the limited displacement, and meanwhile, the steering is heavy, so that the steering requirement of the large-scale multi-axle steering vehicle is difficult to meet.
Disclosure of Invention
The invention aims to solve the defects of insufficient steering displacement and heavy steering of a large multi-shaft steering vehicle in the prior art, and provides a novel steering system of an electric control double-hydraulic power steering gear.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
The utility model provides a novel automatically controlled two hydraulic power steering ware's steering system, includes steering wheel, electric booster unit, transfer case, hydraulic pump, first hydraulic power steering ware, second hydraulic power steering ware, first electromagnetic reversing valve, second electromagnetic reversing valve, third electromagnetic reversing valve, filter and oil tank, the transfer case is equipped with an input shaft and two output shafts, electric booster unit input links to each other with the steering wheel, and the output links to each other with the input shaft of transfer case, the transfer case output shaft links to each other with the input of first hydraulic power steering ware and second hydraulic power steering ware through transmission respectively, first hydraulic power steering ware and second hydraulic power steering ware all are equipped with oil inlet, oil return opening, the hydraulic pump is equipped with the oil-out, oil inlet and oil return opening link to each other with the oil-out and the filter of hydraulic pump respectively through first electromagnetic reversing valve, second electromagnetic reversing valve and third electromagnetic reversing valve, steering system still includes first steering cylinder, second steering cylinder, third steering cylinder, fourth steering cylinder.
As a further technical scheme of the invention, the two working oil ports of the first hydraulic power steering device and the second hydraulic power steering device are respectively connected with the first steering oil cylinder and the fourth steering oil cylinder, the first hydraulic power steering device and the second hydraulic power steering device are respectively provided with an input end and an output shaft, the first hydraulic power steering device and the second hydraulic power steering device are connected with a second steering pull rod and a first steering pull rod through the output shafts, and the other ends of the second steering pull rod and the first steering pull rod are connected with a car.
According to the further technical scheme of the invention, the working oil ports of the first hydraulic power-assisted steering device and the second hydraulic power-assisted steering device are connected through a third electromagnetic reversing valve, the first hydraulic power-assisted steering device and the second hydraulic power-assisted steering device are powered by a hydraulic pump, and the first hydraulic power-assisted steering device and the second hydraulic power-assisted steering device are respectively connected with a first steering axle and a second steering axle.
As a further technical scheme of the invention, the first steering oil cylinder, the second steering oil cylinder, the third steering oil cylinder and the fourth steering oil cylinder are provided with a large cavity and a small cavity.
According to the invention, the transfer case input shaft is connected with the steering wheel through the electric power assisting device, and the two output shafts of the transfer case are respectively connected with the input shafts of the first hydraulic power assisting steering device and the second hydraulic power assisting steering device through the mechanical transmission system.
The beneficial effects of the invention are as follows:
1. by arranging two hydraulic power steering gears to drive different steering axles, the requirement of a large-scale multi-axle steering vehicle on the large displacement of a steering system can be met;
2. the transfer case drives two hydraulic boosters in the steering system, and the transfer case input shaft and the transfer case output shaft can be provided with different speed ratios to realize different rotating speed requirements;
3. The steering system is additionally provided with an electric booster at the lower end of the steering wheel, so that the steering wheel operation moment can be reduced, and the automatic alignment and remote control driving of the steering wheel can be realized;
4. After a certain hydraulic power steering gear fails, the steering system can be switched to the other hydraulic power steering gear to work independently, so that the system safety is high;
5. Compared with an electric proportion electric control steering system, the steering system has low manufacturing cost.
Drawings
Fig. 1 is a schematic structural diagram of a steering system of a novel electric control double-hydraulic power steering gear.
In the figure: 1. a steering wheel; 2. an electric booster; 3. a transfer case; 4. a first steering drive shaft; 41. a second steering drive shaft; 42. a third steering drive shaft; 5. an angle driver; 6. a first electromagnetic directional valve; 61. a second electromagnetic directional valve; 7. a buffer valve; 8. an overflow valve; 9. a filter; 10. an oil tank; 11. a hydraulic pump; 12. a first steering linkage; 121. a second tie rod; 13. a first steering cylinder; 131. a second steering cylinder; 132. a third steering cylinder; 133. a fourth steering cylinder; 14. a first hydraulic power steering gear; 141. a second hydraulic power steering gear; 15. a first steering axle; 152. a second steering axle; 16. and a third electromagnetic directional valve.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1, a steering system of a novel electric control dual-hydraulic power steering device comprises a steering wheel 1, an electric power assisting device 2, a transfer case 3, a hydraulic pump 11, a first hydraulic power steering device 14, a second hydraulic power steering device 141, a first electromagnetic directional valve 6, a second electromagnetic directional valve 61, a third electromagnetic directional valve 16, a filter 9 and an oil tank 10, wherein the transfer case 3 is provided with an input shaft and two output shafts, the input end of the electric power assisting device 2 is connected with the steering wheel 1, the output end of the transfer case 3 is connected with the input shaft of the transfer case 3, the output shafts of the transfer case 3 are respectively connected with the input ends of the first hydraulic power steering device 14 and the second hydraulic power steering device 141 through a transmission device, the first hydraulic power steering device 14 and the second hydraulic power steering device 141 are respectively provided with an oil inlet and an oil return port, the hydraulic pump 11 is provided with an oil outlet, the oil inlet and the oil return port are respectively connected with the oil outlet of the hydraulic pump 11 and the filter 9 through the first electromagnetic directional valve 6, the second electromagnetic directional valve 61 and the third electromagnetic directional valve 16, and the third electromagnetic directional valve 11, and the steering system also comprises a first steering cylinder 13, a second steering cylinder 131, a third steering cylinder 132 and a fourth steering cylinder 133.
In use, the steering wheel 1 is coupled to an input shaft of the transfer case 3 via the electric assist device 2. One of the two output shafts of the transfer case 3 is connected with the input shaft of the second hydraulic power steering gear 141 through the first steering transmission shaft 4, the angle driver 5 and the second steering transmission shaft 41 in sequence, the other output shaft is connected with the input shaft of the first hydraulic power steering gear 14 through the third steering transmission shaft 42, the second hydraulic power steering gear 141 is connected with the second steering bridge 152 through the first steering pull rod 12, the first hydraulic power steering gear 14 is connected with the first steering bridge 15 through the second steering pull rod 121, and the first electromagnetic directional valve 6, the second electromagnetic directional valve 61 and the third electromagnetic directional valve 16 are all provided with two-position four-way electromagnetic valves.
In this embodiment, two working oil ports of the first hydraulic power steering gear 14 and the second hydraulic power steering gear 141 are respectively connected with the first steering cylinder 13 and the fourth steering cylinder 133, the first hydraulic power steering gear 14 and the second hydraulic power steering gear 141 are both provided with an input end and an output shaft, the first hydraulic power steering gear 14 and the second hydraulic power steering gear 141 are connected with the second steering pull rod 121 and the first steering pull rod 12 through the output shafts, the other ends of the second steering pull rod 121 and the first steering pull rod 12 are connected with a car, the working oil ports of the first hydraulic power steering gear 14 and the second hydraulic power steering gear 141 are connected through the third electromagnetic directional valve 16, the first hydraulic power steering gear 14 and the second hydraulic power steering gear 141 are powered by the hydraulic pump 11, and the first hydraulic power steering gear 14 and the second hydraulic power steering gear 141 are respectively connected with the first steering bridge 15 and the second steering bridge 152.
When the hydraulic pump is used, an output port of the hydraulic pump 11 is connected with an oil inlet of the second hydraulic power steering gear 141 sequentially through the buffer valve 7 and the first electromagnetic directional valve 6, and an oil return port of the second hydraulic power steering gear 141 is connected with the oil tank 10 sequentially through the first electromagnetic directional valve 6 and the filter 9; the output port of the hydraulic pump 11 is connected with the oil inlet of the first hydraulic power steering gear 14 through the buffer valve 7 and the second electromagnetic directional valve 61 at the same time, and the oil return port of the first hydraulic power steering gear 14 is connected with the oil tank 10 through the second electromagnetic directional valve 61 and the filter 9; the oil inlet of the buffer valve 7 is connected with the oil outlet of the hydraulic pump 11, the oil outlets of the buffer valve 7 are respectively connected with the first electromagnetic directional valve 6 and the second electromagnetic directional valve 61, and the oil return port of the buffer valve is connected with the oil tank 10 through the filter 9. Meanwhile, an oil outlet of the hydraulic pump 11 is connected with an oil inlet of the filter 9 through the overflow valve 8.
In this embodiment, the first steering cylinder 13, the second steering cylinder 131, the third steering cylinder 132 and the fourth steering cylinder 133 are provided with a large cavity and a small cavity, the input shaft of the transfer case 3 is connected with the steering wheel 1 through the electric power assisting device 2, and two output shafts of the transfer case 3 are respectively connected with the input shafts of the first hydraulic power assisting steering device 14 and the second hydraulic power assisting steering device 141 through a mechanical transmission system.
In use, the first steering axle 15 and the second steering axle 152 are respectively provided with a second steering cylinder 131, a third steering cylinder 132, a first steering cylinder 13 and a fourth steering cylinder 133, and the working oil port of the second hydraulic power steering device 141 is connected with the working oil port of the first hydraulic power steering device 14 through the third electromagnetic directional valve 16.
From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects: when the system is in a normal working state, the first electromagnetic directional valve 6, the second electromagnetic directional valve 61 and the third electromagnetic directional valve 16 are in a power-off state. At this time, the high-pressure hydraulic oil at the oil outlet of the hydraulic pump 11 sequentially passes through the buffer valve 7 and the first electromagnetic directional valve 6 to enter the oil inlet of the second hydraulic power steering gear 141, and sequentially passes through the buffer valve 7 and the second electromagnetic directional valve 61 to enter the oil inlet of the first hydraulic power steering gear 14. The working ports of the second hydraulic power steering gear 141 and the first hydraulic power steering gear 14 are in a disconnected state, and the hydraulic oil in the steering cylinders of the third steering bridge 152 and the first steering bridge 15 are independent of each other.
When the steering wheel 1 rotates, the electric booster 2 applies a booster torque to the input shaft of the transfer case 3 based on information such as the steering wheel 1 operating torque and the change in vehicle speed. The transfer case 3 converts the power of the input shaft into the rotation of two output shafts, the first steering transmission shaft 4, the angle driver 5 and the second steering transmission shaft 41 drive the input shaft of the second hydraulic power steering gear 141 to rotate, one of two working oil ports of the second hydraulic power steering gear 141 generates high pressure, the other working oil port generates low pressure, and the oil pressure of the working oil ports acts on the large cavity and the small cavity of the first steering cylinder 13 and the fourth steering cylinder 133 of the third steering bridge 152 to push the third steering bridge 152 to steer. Similarly, the output shaft of the transfer case 3 drives the input shaft of the first hydraulic power steering gear 14 to rotate through the third steering transmission shaft 42, so that high pressure is generated at one of two working oil ports of the first hydraulic power steering gear 14, low pressure is generated at the other working oil port, and oil pressure through the working oil ports acts on large cavities and small cavities of the second steering cylinder 131 and the third steering cylinder 132 of the first steering axle 15, so that the first steering axle 15 is driven to steer. The rotation of the third steering axle 152 pushes the output shaft of the second hydraulic power steering gear 141 to rotate through the first steering pull rod 12, and the rotation angle change of the input shaft and the output shaft of the second hydraulic power steering gear 141 changes the pressure of the working oil port in real time so as to realize the steering requirements of different working conditions. The rotation of the first steering axle 15 pushes the output shaft of the first hydraulic power steering device 14 to rotate through the second steering pull rod 121, and the rotation angle change of the input shaft and the output shaft of the first hydraulic power steering device 14 changes the pressure of the working oil port in real time so as to realize the steering requirements of different working conditions.
When the pressure of the output port of the hydraulic pump 11 is higher than the set pressure of the overflow valve 8, the high-pressure oil at the outlet part of the hydraulic pump 11 flows back to the oil tank 10 through the overflow valve 8 and the filter 9, so that the pressure of a hydraulic system is prevented from being excessively high. When the pressure difference between the oil outlet pressure and the oil inlet pressure of the buffer valve 7 exceeds the set pressure of the buffer valve 7, part of high-pressure oil at the oil outlet of the buffer valve 7 flows back to the oil tank 10 through the oil return port and the filter 9, so that the oil outlet pressure of the buffer valve 7 is reduced;
When the first hydraulic power steering gear 14 fails, the first electromagnetic directional valve 6 is in a power-off state, and the second electromagnetic directional valve 61 and the third electromagnetic directional valve 16 are in a power-on state. At this time, the high-pressure hydraulic oil at the oil outlet of the hydraulic pump 11 sequentially passes through the buffer valve 7 and the first electromagnetic directional valve 6 to enter the oil inlet of the second hydraulic power steering gear 141, and the oil return port of the second hydraulic power steering gear 141 is sequentially connected with the oil tank 10 through the first electromagnetic directional valve 6 and the filter 9, so that the second hydraulic power steering gear 141 is in a working state. At the same time, the high-pressure oil at the outlet of the hydraulic pump 11 is disconnected from the first hydraulic power steering gear 14, the oil return port of the first hydraulic power steering gear 14 is also disconnected from the oil tank 10, at this time, the first hydraulic power steering gear 14 is in a passive working state, and the rotation of the input shaft of the first hydraulic power steering gear 14 does not generate oil pressure change at the working oil port thereof. The third electromagnetic directional valve 16 is electrically communicated, so that the working oil ports of the second hydraulic power steering gear 141 and the first hydraulic power steering gear 14 are communicated, and the pressure of the working oil port of the second hydraulic power steering gear 141 can act on the second steering oil cylinder 131 and the third steering oil cylinder 132 of the first steering axle 15 to drive the first steering axle 15 to rotate while driving the third steering axle 152 to rotate;
When the second hydraulic power steering gear 141 fails, the first electromagnetic directional valve 6 and the third electromagnetic directional valve 16 are in the power-on state, while the second electromagnetic directional valve 61 is in the power-off state. At this time, the high-pressure hydraulic oil at the oil outlet of the hydraulic pump 11 sequentially passes through the buffer valve 7 and the second electromagnetic directional valve 61 to enter the oil inlet of the first hydraulic power steering gear 14, and the oil return port of the first hydraulic power steering gear 14 is sequentially connected with the oil tank 10 through the second electromagnetic directional valve 61 and the filter 9, so that the first hydraulic power steering gear 14 is in a working state. Meanwhile, the high-pressure oil at the outlet of the hydraulic pump 11 is in a disconnection state with the second hydraulic power steering gear 141, the oil return port of the second hydraulic power steering gear 141 is also in a disconnection state with the oil tank 10, at this time, the second hydraulic power steering gear 141 is in a passive working state, and the rotation of the input shaft of the second hydraulic power steering gear 141 does not generate oil pressure change at the working oil port thereof. The third electromagnetic directional valve 16 is electrically communicated, so that the working oil ports of the second hydraulic power steering gear 141 and the first hydraulic power steering gear 14 are communicated, and the pressure of the working oil port of the first hydraulic power steering gear 14 can act on the first steering cylinder 13 and the fourth steering cylinder 133 of the third steering bridge 152 to drive the second steering bridge 152 to rotate while driving the first steering bridge 15 to rotate.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (5)
1. The utility model provides a novel automatically controlled two hydraulic power assisted steering ware's steering system, includes steering wheel (1), electric booster (2), transfer case (3), hydraulic pump (11), first hydraulic power assisted steering ware (14), second hydraulic power assisted steering ware (141), first electromagnetic directional valve (6), second electromagnetic directional valve (61), third electromagnetic directional valve (16), filter (9) and oil tank (10), its characterized in that, transfer case (3) are equipped with an input shaft and two output shafts, electric booster (2) input links to each other with steering wheel (1), and the output links to each other with the input shaft of transfer case (3), the output shaft of transfer case (3) links to each other with the input of first hydraulic power assisted steering ware (14) and second hydraulic power assisted steering ware (141) through transmission respectively, first hydraulic power assisted steering ware (14) and second hydraulic power assisted steering ware (141) all are equipped with oil inlet, oil return port, hydraulic pump (11) are equipped with the oil-out, oil inlet and oil return port pass through first electromagnetic directional valve (6), second electromagnetic directional valve (61) and third electromagnetic directional valve (16), and third electromagnetic directional valve (13) are still connected with hydraulic pump (13) steering wheel (13) respectively to filter the oil-out, and the steering system (132) are still including the transfer case (13) And a fourth steering cylinder (133).
2. The steering system of the novel electric control double-hydraulic power steering device according to claim 1, wherein two working oil ports of the first hydraulic power steering device (14) and the second hydraulic power steering device (141) are respectively connected with a first steering oil cylinder (13) and a fourth steering oil cylinder (133), the first hydraulic power steering device (14) and the second hydraulic power steering device (141) are respectively provided with an input end and an output shaft, the first hydraulic power steering device (14) and the second hydraulic power steering device (141) are connected with a second steering pull rod (121) and a first steering pull rod (12) through the output shafts, and the other ends of the second steering pull rod (121) and the first steering pull rod (12) are connected with a car.
3. The steering system of the novel electric control double-hydraulic power steering device according to claim 2, wherein the working oil ports of the first hydraulic power steering device (14) and the second hydraulic power steering device (141) are connected through a third electromagnetic directional valve (16), the first hydraulic power steering device (14) and the second hydraulic power steering device (141) are powered by a hydraulic pump (11), and the first hydraulic power steering device (14) and the second hydraulic power steering device (141) are respectively connected with a first steering axle (15) and a second steering axle (152).
4. A steering system of a novel electrically controlled double hydraulic power steering gear according to claim 3, characterized in that the first steering cylinder (13), the second steering cylinder (131), the third steering cylinder (132) and the fourth steering cylinder (133) are provided with a large cavity and a small cavity.
5. The steering system of the novel electric control double-hydraulic power steering gear according to claim 4, wherein the input shaft of the transfer case (3) is connected with the steering wheel (1) through the electric power assisting device (2), and two output shafts of the transfer case (3) are respectively connected with the input shafts of the first hydraulic power steering gear (14) and the second hydraulic power steering gear (141) through a mechanical transmission system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410337939.0A CN118025307A (en) | 2024-03-25 | 2024-03-25 | Novel steering system of electric control double-hydraulic power steering gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410337939.0A CN118025307A (en) | 2024-03-25 | 2024-03-25 | Novel steering system of electric control double-hydraulic power steering gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118025307A true CN118025307A (en) | 2024-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410337939.0A Pending CN118025307A (en) | 2024-03-25 | 2024-03-25 | Novel steering system of electric control double-hydraulic power steering gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118025307A (en) |
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2024
- 2024-03-25 CN CN202410337939.0A patent/CN118025307A/en active Pending
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