Suspension and steering integrated structure, control method and vehicle

Abstract

The embodiment of the invention provides a suspension and steering integrated structure, a control method and a vehicle. The suspension and steering integrated structure comprises a driving device, at least one suspension device and at least one steering device. The driving device is communicated with the suspension device through a first output passage and a first backflow passage; the driving device is communicated with the steering device through a second output passage and a second backflow passage; the driving device is used for driving at least one of the suspension device and the steering device to start working. According to the suspension and steering integrated structure, the control method and the vehicle, unified control over the suspension and steering of the vehicle can be achieved through the integrated structure, so that the complexity of the vehicle structure is reduced, the manufacturing cost is reduced, and meanwhile the chassis space occupancy rate of the vehicle is increased.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of automobiles, and in particular, to a suspension and steering integrated structure, a control method, and a vehicle. Background Art

[0002] A suspension is a general term for all force transmission connecting devices between the frame (or the load-bearing body) of an automobile and the axle (or the wheel). Its function is to transmit the force and torque acting between the wheel and the frame, and to buffer the impact force transmitted from the uneven road surface to the frame or the body, and reduce the vibration caused thereby, so as to ensure that the automobile can drive smoothly.

[0003] Currently, different modules are respectively used to control the suspension and the steering structure of a vehicle, resulting in a relatively complex vehicle structure, high manufacturing cost, and low occupancy rate of the vehicle chassis space. Summary of the Invention

[0004] The embodiments of the present application aim to provide a suspension and steering integrated structure, a control method, and a vehicle, aiming to use the integrated structure to achieve unified control of the vehicle suspension and steering, thereby reducing the complexity of the vehicle structure, lowering the manufacturing cost, and at the same time increasing the occupancy rate of the vehicle chassis space.

[0005] In a first aspect of the embodiments of the present application, a suspension and steering integrated structure is provided, including:

[0006] A driving device, at least one suspension device, and at least one steering device;

[0007] The driving device is communicated with the suspension device through a first output passage and a first return passage, and the suspension device is used to adjust the body height of the vehicle;

[0008] The driving device is communicated with the steering device through a second output passage and a second return passage, and the steering device is used to adjust the orientation of at least one wheel of the vehicle;

[0009] The driving device is used to drive at least one of the suspension device and the steering device to start working.

[0010] Optionally, one end of the second output passage is communicated with the first output passage, and the other end is communicated with the steering device; one end of the second return passage is communicated with the first return passage, and the other end is communicated with the steering device.

[0011] Optionally, the steering device includes a second reversing valve, a third connecting passage, a fourth connecting passage, and a steering hydraulic cylinder;

[0012] The steering hydraulic cylinder includes a hydraulic left chamber and a hydraulic right chamber. One end of the third connection passage communicates with the hydraulic left chamber, and one end of the fourth connection passage communicates with the hydraulic right chamber;

[0013] The second output passage, the second return passage, the third connection passage, and the fourth connection passage are respectively connected to different ports of the second reversing valve;

[0014] The second reversing valve is configured to have multiple working modes. In different working modes, the second output passage, the second return passage, the third connection passage, and the fourth connection passage are in different communication states.

[0015] Optionally, the multiple working modes include a first working mode, a second working mode, and a third working mode;

[0016] In the first working mode, the second output passage communicates with the third connection passage, and the second return passage communicates with the fourth connection passage;

[0017] In the second working mode, the second output passage, the third connection passage, the second return passage, and the fourth connection passage are all not in communication;

[0018] In the third working mode, the second output passage communicates with the fourth connection passage, and the second return passage communicates with the third connection passage.

[0019] Optionally, the steering device further includes a third throttle valve and a fourth throttle valve;

[0020] Wherein, the third throttle valve is arranged on the third connection passage, and the fourth throttle valve is arranged on the fourth connection passage.

[0021] Optionally, the steering device further includes a third hydraulic accumulator and a fourth hydraulic accumulator;

[0022] Wherein, the third hydraulic accumulator is arranged on the third connection passage, and the fourth hydraulic accumulator is arranged on the fourth connection passage.

[0023] Optionally, a hydraulic push rod is arranged inside the steering hydraulic cylinder, and one end or both ends of the hydraulic push rod extend outside the steering hydraulic cylinder;

[0024] A ball head structure and a steering pull rod are arranged on the end portion of the hydraulic push rod located outside the steering hydraulic cylinder. The hydraulic push rod is connected to the vehicle wheel through the ball head structure and the steering pull rod.

[0025] Optionally, the suspension device includes a first reversing valve, a first connection passage, a second connection passage, and a shock absorber hydraulic cylinder. The shock absorber hydraulic cylinder includes a shock absorber upper chamber and a shock absorber lower chamber. One end of the first connection passage communicates with the shock absorber lower chamber, and one end of the second connection passage communicates with the shock absorber upper chamber;

[0026] The first output passage, the first return passage, the first connection passage, and the second connection passage are respectively connected to different ports of the first reversing valve;

[0027] The first reversing valve is configured to have multiple working modes. In different working modes, the first output passage, the first return passage, the first connection passage, and the second connection passage are in different communication states.

[0028] Optionally, the multiple working modes include a first working mode, a second working mode, and a third working mode;

[0029] In the first working mode, the first output passage communicates with the first connection passage, and the second return passage communicates with the second connection passage;

[0030] In the second working mode, the first output passage, the first connection passage, the first return passage, and the second connection passage are all not in communication;

[0031] In the third working mode, the first output passage communicates with the second connection passage, and the first return passage communicates with the first connection passage.

[0032] Optionally, the driving device includes an electric pump and a controller. The controller is connected to the electric pump. The electric pump is connected to the suspension device through the first output passage and the first return passage, and the electric pump is connected to the steering device through the second output passage and the second return passage;

[0033] The controller is used to make the electric pump output hydraulic fluid to at least one of the first output passage and the second output passage according to a signal.

[0034] Optionally, there are four suspension devices, four steering devices, and four electric pumps, and each electric pump is respectively connected to the corresponding suspension device and steering device.

[0035] Optionally, there are four suspension devices and four driving pumps, and two steering devices;

[0036] Each of the electric pumps is respectively connected to the corresponding suspension device, and two of the four electric pumps are respectively connected to one steering device.

[0037] Optionally, there are four suspension devices and four steering devices, and two drive pumps are provided;

[0038] Each of the electric pumps is respectively connected to two suspension devices and two steering devices.

[0039] Optionally, there are multiple suspension devices and multiple steering devices, and one electric pump is provided;

[0040] One electric pump is simultaneously connected to multiple suspension devices and multiple steering devices.

[0041] A second aspect of the embodiments of the present application provides a control method for an integrated structure of a suspension and a steering, characterized in that the control method includes:

[0042] Using a driving device to receive a suspension sensor signal, a steering wheel angle sensor signal, and an acceleration sensor signal;

[0043] According to the suspension sensor signal, the driving device controls the suspension device through a first output path and a first return path to change the body height of the vehicle;

[0044] According to the steering wheel angle sensor signal and the acceleration sensor signal, the driving device controls the steering device through a second output path and a second return path to change the orientation of at least one wheel of the vehicle;

[0045] Wherein, the driving device is used to drive at least one of the suspension device and the steering device to start working.

[0046] A third aspect of the embodiments of the present application provides a vehicle, including the vehicle provided in the first aspect of the embodiments of the present application.

[0047] Beneficial effects:

[0048] The present application provides a suspension and steering integrated structure, a control method, and a vehicle. By providing a driving device, at least one suspension device, and at least one steering device, wherein the driving device is communicated with the suspension device through a first output passage and a first return passage, and the driving device is communicated with the steering device through a second output passage and a second return passage. The driving device can drive at least one of the suspension device and the steering device to start working, so as to adjust the vehicle body height and the wheel orientation. In this way, the suspension device and the steering device are integrated into the same control system, realizing the unified control of the vehicle suspension and steering, thereby reducing the complexity of the vehicle structure, lowering the vehicle manufacturing cost, and at the same time increasing the utilization rate of the vehicle chassis space. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments of the present application will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0050] Figure 1 is a schematic diagram of a suspension and steering integrated structure proposed in an embodiment of the present application;

[0051] Figure 2 is a schematic diagram of a suspension and steering integrated structure with a hydraulic steering gear as the steering device proposed in an embodiment of the present application;

[0052] Figure 3 is a schematic diagram of a suspension and steering integrated structure with a steering hydraulic cylinder as the steering device and both ends of the hydraulic push rod extending proposed in an embodiment of the present application;

[0053] Figure 4 is a schematic diagram of a suspension and steering integrated structure with a steering hydraulic cylinder as the steering device and one end of the hydraulic push rod extending proposed in an embodiment of the present application;

[0054] Figure 5 is a schematic diagram of a vehicle suspension and steering integrated structure including four suspension devices, four steering devices, and four electric pumps proposed in an embodiment of the present application;

[0055] Figure 6 is a schematic diagram of a vehicle suspension and steering integrated structure including four suspension devices, two steering devices, and four electric pumps proposed in an embodiment of the present application;

[0056] Figure 7 is a schematic diagram of a vehicle suspension and steering integrated structure including four suspension devices, two steering devices, and one electric pump proposed in an embodiment of the present application;

[0057] Figure 8 It is a schematic diagram of an integrated structure of a vehicle suspension and steering system proposed in an embodiment of the present application, which includes four suspension devices, four steering devices, and an electric pump.

[0058] Figure 9 It is a schematic diagram of an integrated structure of a vehicle suspension and steering system proposed in an embodiment of the present application, which includes four suspension devices, two steering devices, and two electric pumps.

[0059] Figure 10 It is a schematic diagram of an integrated structure of a vehicle suspension and steering system proposed in an embodiment of the present application, which includes four suspension devices, four steering devices, and two electric pumps.

[0060] Figure 11 It is a schematic diagram of the step flow of a control method for an integrated structure of a suspension and a steering system proposed in an embodiment of the present application.

[0061] Explanation of reference numerals: 1. Controller; 2. Electric pump; 21. First output passage; 22. First return passage; 23. Second output passage; 24. Second return passage; 25. Oil pot; 3. Suspension device; 31. First reversing valve; 32. First connecting passage; 321. First hydraulic accumulator; 322. First throttle valve; 33. Second connecting passage; 331. Second hydraulic accumulator; 332. Second throttle valve; 34. Shock absorber hydraulic cylinder; 341. Shock absorber lower chamber; 342. Shock absorber upper chamber; 35. Shock absorber body; 4. Steering device; 41. Hydraulic steering gear; 42. Second reversing valve; 43. Third connecting passage; 431. Third hydraulic accumulator; 432. Third throttle valve; 44. Fourth connecting passage; 441. Fourth hydraulic accumulator; 442. Fourth throttle valve; 45. Steering hydraulic cylinder; 451. Hydraulic left chamber; 452. Hydraulic right chamber; 46. Hydraulic push rod; 461. Ball head structure; 462. Steering tie rod. Detailed implementation manners

[0062] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0063] Refer to Figure 1 As shown, an integrated structure of a suspension and a steering system disclosed in an embodiment of the present application includes a driving device, at least one suspension device 3, and at least one steering device 4.

[0064] Specifically, the driving device includes a controller 1 and an electric pump 2. The controller 1 is the main control part in this integrated structure. The controller 1 is connected to the electric pump 2, so the controller 1 can control the electric pump 2 to turn on or off. At the same time, the controller 1 is also used to receive the signals collected by various suspension sensors, the vehicle steering wheel angle sensor, and the vehicle acceleration sensor of the vehicle, and can control the electric pump 2 to output oil according to these signals. In practical applications, the controller 1 can be the vehicle's ECU (Electronic Control Unit).

[0065] The suspension device 3 and the steering device 4 are components at corresponding positions on the vehicle. The suspension device 3 is mainly used to adjust the body height of the vehicle, and the steering device 4 is mainly used to adjust the orientation of at least one wheel of the vehicle. Both the suspension device 3 and the steering device 4 are hydraulic structures. By controlling the changes in the hydraulic pressure at different positions in the suspension device 3 and the steering device 4, their respective achievable effects can be achieved.

[0066] It should be noted that the electric pump 2 mainly controls the suspension device 3 and the steering device 4 by pumping oil into the suspension device 3 and the steering device 4. However, in practical applications, other drive sources can also be used to control the suspension device 3 and the steering device 4, such as electric control, etc. This is not limited in the embodiments of this application.

[0067] Refer to Figure 1 As shown, the electric pump 2 includes a first output passage 21 and a first return passage 22. The first output passage 21 and the first return passage 22 are respectively connected to different positions of the suspension device 3. At the same time, the electric pump 2 also includes an oil pot 25. The first output passage 21 and the first return passage 22 are both connected to the oil pot 25. The oil pot 25 is filled with oil. The electric pump 2 can pump the oil in the oil pot 25 into the first output passage 21, and the oil in the first return passage 22 can flow back into the oil pot 25.

[0068] Specifically, refer to Figure 2 As shown, the suspension device 3 includes a first reversing valve 31, a first connection passage 32, a second connection passage 33, and a shock absorber hydraulic cylinder 34. The shock absorber hydraulic cylinder 34 includes a shock absorber upper chamber 342 and a shock absorber lower chamber 341. A shock absorber body 35 is arranged in the shock absorber hydraulic cylinder 34, and the shock absorber body 35 is connected to the suspension of the vehicle. Among them, the first connection passage 32 is connected to the shock absorber lower chamber 341, and the second connection passage 33 is connected to the shock absorber upper chamber 342.

[0069] Further, the first reversing valve 31 includes four ports, and the first output passage 21, the first return passage 22, the first connection passage 32, and the second connection passage 33 are respectively connected to different ports. The first reversing valve 31 can connect different ports, thereby realizing the connection of different passages.

[0070] Specifically, the first reversing valve 31 is connected to the controller 1, and the controller 1 can control the first reversing valve 31 to adjust to the first working mode, the second working mode, and the third working mode according to signals.

[0071] In the first working mode, the first output passage 21 is connected to the first connection passage 32, and the first return passage 22 is connected to the second connection passage 33. At this time, the electric pump 2 pumps oil through the first output passage 21, and the oil enters the lower chamber 341 of the shock absorber through the first connection passage 32, causing the shock absorber body 35 to move outward relative to the shock absorber hydraulic cylinder 34, so that the shock absorber body 35 extends. The oil in the upper chamber 342 of the shock absorber then flows into the oil pot 25 through the second connection passage 33 and the first return passage 22.

[0072] In the second working mode, the first output passage 21, the first connection passage 32, the first return passage 22, and the second connection passage 33 are all in a non-connected state. At this time, oil cannot enter the suspension device 3, and the upper chamber 342 of the shock absorber is connected to the lower chamber 341 of the shock absorber. The controller 1 finally controls the size of the shock absorber damping by controlling the flow rates of the first connection pipeline and the second connection pipeline.

[0073] In the third working mode, the first output passage 21 is connected to the second connection passage 33, and the first return passage 22 is connected to the first connection passage 32. At this time, the electric pump 2 pumps oil through the first output passage 21, and the oil enters the upper chamber 342 of the shock absorber through the second connection passage 33, causing the shock absorber body 35 to move inward relative to the shock absorber hydraulic cylinder 34, so that the shock absorber body 35 shortens. The oil in the lower chamber 341 of the shock absorber then flows into the oil pot 25 through the first connection passage 32 and the first return passage 22.

[0074] In addition, as shown in Figure 2 A first hydraulic accumulator 321 and a first throttle valve 322 are further provided on the first connection pipeline, and a second hydraulic accumulator 331 and a second throttle valve 332 are further provided on the second connection pipeline. The first hydraulic accumulator 321 and the second hydraulic accumulator 331 can mitigate the oil pressure fluctuations in the first connection pipeline and the second connection pipeline during passage commutation. By adjusting the opening degrees of the first throttle valve 322 and the second throttle valve 332, the flow rates of the oil in the first connection pipeline and the second connection pipeline can be respectively controlled, thereby controlling the moving speed of the shock absorber body 35.

[0075] In this way, the control of the suspension device 3 can be achieved through the integrated system, enabling the controller 1 to control the active suspension to rise or fall.

[0076] Furthermore, the steering device 4 has different forms according to whether it is applied to the front wheels, rear wheels or individual wheels of the vehicle.

[0077] Specifically, referring to Figure 2 As shown, in one embodiment, when the steering device 4 is applied to the front wheels of the vehicle, the steering device 4 may include a hydraulic steering gear 41. The input shaft of the hydraulic steering gear 41 is connected to the steering column of the vehicle's steering wheel. In this way, when the user turns the steering wheel, the steering column of the steering wheel will drive the input shaft of the hydraulic steering gear 41 to rotate, thereby causing the rotary valve inside the hydraulic steering gear 41 to change to different states. At the same time, the hydraulic steering gear 41 includes an oil inlet and an oil return port. The oil inlet is communicated with the second output passage 23, and the oil return port is communicated with the second return passage 24. It should be noted that the second output passage 21 and the second return passage 24 can be directly connected to the electric pump 2. The second output oil passage 23 can also be connected to the first output passage 21, and the second return passage 24 can also be connected to the first return passage 22. In the embodiment of the present application, one end of the second output passage 23 is communicated with the first output passage 21, and one end of the second return passage 24 is communicated with the first return passage 22.

[0078] When the user uses the vehicle, if the steering wheel is not turned, the input shaft of the hydraulic steering gear 41 will not rotate either. At this time, both the oil inlet and the oil outlet of the hydraulic steering gear 41 are in a closed state, and the oil cannot enter the inside of the hydraulic steering gear 41. If the user turns the steering wheel, then the steering column of the steering wheel will drive the input shaft of the hydraulic steering gear 41 to rotate and deform, so that the oil inlet and the oil outlet are opened, and the oil will enter the inside of the hydraulic steering gear 41 to make the hydraulic steering gear 41 start to work.

[0079] Specifically, when the user has a steering requirement, the electric pump 2 pumps the oil through the first output passage 21 and the second output passage 23 into the oil inlet. At this time, since the user turns the steering wheel to drive the rotary valve inside the hydraulic steering gear 41 to open, the oil enters the inside of the hydraulic steering gear 41, making the hydraulic steering gear 41 start to work, so that the hydraulic push rod 46 inside the hydraulic steering gear 41 moves to one side. When the user stops turning the steering wheel, the rotary valve inside the hydraulic steering gear 41 closes. Correspondingly, the oil inlet and the oil return port of the hydraulic steering gear 41 are closed, and the hydraulic steering gear 41 stops working. The hydraulic push rod 46 maintains its current position unchanged. At the same time, since the controller 1 receives the signal of the change in the steering wheel angle 0, it controls the electric pump 2 to stop working. Similarly, when the user turns the steering wheel in the reverse direction, the opening direction of the rotary valve is opposite, and the oil flows reversely inside the hydraulic steering gear 41, pushing the hydraulic push rod 46 to move to the other side.

[0080] In this way, the control of the steering device 4 can be achieved through this integrated system, enabling the controller 1 to control the front wheels of the vehicle to change their orientations.

[0081] Referring to Figure 3 and Figure 4 As shown, in one embodiment, when the steering device 4 is applied to the rear wheels or individual wheels of a vehicle, the steering device 4 may include a second reversing valve 42, a third connection passage 43, a fourth connection passage 44, and a steering hydraulic cylinder 45. The steering hydraulic cylinder 45 includes a hydraulic right chamber 452 and a hydraulic left chamber 451. A hydraulic push rod 46 is disposed inside the steering hydraulic cylinder 45, and the hydraulic push rod 46 is used to connect to the wheels of the vehicle. Among them, the third connection passage 43 communicates with the hydraulic left chamber 451, and the fourth connection passage 44 communicates with the hydraulic right chamber 452. It should be noted that the hydraulic left chamber 451 and the hydraulic right chamber 452 can be formed by the space between the sealing portion of the hydraulic push rod 46 and both ends of the steering hydraulic cylinder 45.

[0082] Furthermore, the second reversing valve 42 includes four ports. The second output passage 23, the second return passage 24, the third connection passage 43, and the fourth connection passage 44 are respectively connected to different ports. The second reversing valve 42 can connect different ports, thereby achieving the connection of different passages.

[0083] Specifically, the second reversing valve 42 is connected to the controller 1, and the controller 1 can control the second reversing valve 42 to adjust to the first working mode, the second working mode, and the third working mode according to signals.

[0084] In the first working mode, the second output passage 23 communicates with the third connection passage 43, and the second return passage 24 communicates with the fourth connection passage 44. At this time, the electric pump 2 pumps oil through the first output passage 21. The oil sequentially passes through the second output passage 23 and the third connection passage 43 and enters the hydraulic left chamber 451, causing the hydraulic push rod 46 to move toward the right side of the steering hydraulic cylinder 45. The oil in the hydraulic right chamber 452 then sequentially flows into the oil pot 25 through the fourth connection passage 44, the second return passage 24, and the first return passage 22.

[0085] In the second working mode, the second output passage 23, the third connection passage 43, the second return passage 24, and the fourth connection passage 44 are all in a non-connected state. At this time, the oil cannot enter the steering hydraulic cylinder 45, and the hydraulic push rod 46 remains in its current position unchanged.

[0086] In the third working mode, the second output passage 23 communicates with the fourth connection passage 44, and the second return passage 24 communicates with the third connection passage 43. At this time, the electric pump 2 pumps oil through the first output passage 21. The oil sequentially enters the right hydraulic chamber 452 through the second output passage 23 and the fourth connection passage 44, causing the hydraulic push rod 46 to move towards the left side of the hydraulic steering cylinder. The oil in the left hydraulic chamber 451 then sequentially flows into the oil pot 25 through the third connection passage 43, the second return passage 24, and the first return passage 22.

[0087] In addition, as shown in Figure 3 and Figure 4 , a third hydraulic accumulator 431 and a third throttle valve 432 are further provided on the third connection pipeline, and a fourth hydraulic accumulator 441 and a fourth throttle valve 442 are further provided on the fourth connection pipeline. The third hydraulic accumulator 431 and the fourth hydraulic accumulator 441 can mitigate the oil pressure fluctuations in the third connection pipeline and the fourth connection pipeline when the passage is commutated. By adjusting the opening degrees of the third throttle valve 432 and the fourth throttle valve 442, the flow rates of the oil in the third connection pipeline and the fourth connection pipeline can be respectively controlled, thereby controlling the moving speed of the hydraulic push rod 46.

[0088] Furthermore, as shown in Figure 3 and Figure 4 , one end or both ends of the hydraulic push rod 46 extend outside the steering hydraulic cylinder 45, and a ball head structure 461 and a steering tie rod 462 are provided on the end of the hydraulic push rod 46 located outside the steering hydraulic cylinder 45. Among them, the ball head structure 461 is connected to the end of the hydraulic push rod 46, one end of the steering tie rod 462 is connected to the ball head structure, and the other end is connected to the vehicle wheel.

[0089] Specifically, as shown in Figure 3 , when the steering device 4 is applied to the vehicle's rear wheels, both ends of the hydraulic push rod 46 extend outside the steering hydraulic cylinder 45. By controlling the oil to enter the left hydraulic chamber 451 or the right hydraulic chamber 452, the hydraulic push rod 46 can be driven to move towards the left or right side of the steering hydraulic cylinder 45, and further, the ball head structure 461 and the steering tie rod 462 on the hydraulic push rod 46 drive the vehicle's rear wheels to turn towards the left or right side.

[0090] As shown in Figure 4 , when the steering device 4 is applied to a single vehicle wheel, one end of the hydraulic push rod 46 extends outside the steering hydraulic cylinder 45. For example, the hydraulic push rod 46 can extend out of the steering hydraulic cylinder 45 from the left hydraulic chamber 451 or from the right hydraulic chamber 452. It can be understood that the wheel on the corresponding side of the vehicle is connected to the hydraulic push rod 46 according to the direction in which the hydraulic push rod 46 extends out of the steering hydraulic cylinder 45.

[0091] In the embodiment of the present application, the controller 1 can cause the electric pump 2 to output hydraulic fluid to at least one of the first output passage 21 and the second output passage 23 according to a signal. That is to say, the control of the electric pump 1 for the suspension device 3 and the steering device 4 is independent of each other. Therefore, the control of the vehicle suspension device 3 and the steering device 4 can be achieved simultaneously through this integrated structure.

[0092] In practical applications, for the entire vehicle, the vehicle may include multiple suspension devices 3 and multiple steering devices 4. Therefore, those skilled in the art can select the number of electric pumps 2 and the connections between each electric pump 2 and the suspension device 3 and the steering device 4 according to actual needs.

[0093] For example, referring to Figure 5 As shown, in one embodiment, the integrated structure of the entire vehicle includes four suspension devices 3 and four steering devices 4. And in this embodiment, the integrated structure includes four electric pumps 2. Each electric pump 2 is connected to one suspension device 3 and one steering device 4. The four suspension devices 3 are respectively used to control the four suspensions of the vehicle, and the four steering devices 4 are respectively used to control the four wheels of the vehicle (in the case where the vehicle only includes four wheels).

[0094] For example, referring to Figure 6 As shown, in one embodiment, the integrated structure of the entire vehicle includes four suspension devices 3 and two steering devices 4. And in this embodiment, the integrated structure includes four electric pumps 2. Among them, the two steering devices 4 are respectively a hydraulic steering gear 41 for controlling the front wheels of the vehicle (the two wheels located at the front side of the vehicle) and a steering hydraulic cylinder 45 for controlling the rear wheels of the vehicle (the two wheels located at the rear side of the vehicle). At the same time, among the four electric pumps 2, two electric pumps 2 are only used to be connected to a corresponding suspension device 3, and the other two electric pumps 2 are simultaneously connected to one suspension device 3 and one steering device 4. That is to say, in addition to being used to adjust the corresponding suspension, these two electric pumps 2 are respectively used to adjust the orientations of the front wheels and the rear wheels of the vehicle.

[0095] For example, referring to Figure 7 As shown, in one embodiment, the integrated structure of the entire vehicle includes four suspension devices 3 and two steering devices 4. And in this embodiment, the integrated structure only includes one electric pump 2. Among them, the two steering devices 4 are respectively a hydraulic steering gear 41 for controlling the front wheels of the vehicle (the two wheels located at the front side of the vehicle) and a steering hydraulic cylinder 45 for controlling the rear wheels of the vehicle (the two wheels located at the rear side of the vehicle). This electric pump 2 is simultaneously connected to the four suspension devices 3 and the two steering devices 4. That is to say, in addition to being used to adjust all the suspensions of the vehicle, this electric pump 2 is also used to adjust the orientations of the front wheels and the rear wheels of the vehicle.

[0096] For example, referring toFigure 8 As shown, in one embodiment, the integrated structure of the entire vehicle includes four suspension devices 3 and four steering devices 4, and in this embodiment, the integrated structure includes only one electric pump 2. Among them, the four steering devices 4 respectively correspond to each wheel of the vehicle. This electric pump 2 is simultaneously connected to the four suspension devices 3 and the four steering devices 4. That is to say, in addition to being used to adjust all the suspensions of the vehicle, this electric pump 2 is also used to adjust the orientation of each wheel of the vehicle.

[0097] For example, referring to Figure 9 As shown, in one embodiment, the integrated structure of the entire vehicle includes four suspension devices 3 and two steering devices 4, and in this embodiment, the integrated structure includes two electric pumps 2. Among them, the two steering devices 4 are respectively a hydraulic steering gear 41 for controlling the front wheels of the vehicle (the two wheels located at the front side of the vehicle) and a steering hydraulic cylinder 45 for controlling the rear wheels of the vehicle (the two wheels located at the rear side of the vehicle). One of the two electric pumps 2 is simultaneously connected to the two suspension devices 3 and the hydraulic steering gear 41, and the other electric pump 2 is simultaneously connected to the other two suspension devices 3 and the steering hydraulic cylinder 45. That is to say, one of the two electric pumps 2 is used to adjust the two suspensions of the vehicle and the orientation of the front wheels of the vehicle, while the other is used to adjust the other two suspensions of the vehicle and the orientation of the rear wheels of the vehicle.

[0098] For example, referring to Figure 10 As shown, in one embodiment, the integrated structure of the entire vehicle includes four suspension devices 3 and four steering devices 4, and in this embodiment, the integrated structure includes two electric pumps 2. Among them, the four steering devices 4 respectively correspond to each wheel of the vehicle. One of the two electric pumps 2 is simultaneously connected to two suspension devices 3 and two steering devices 4, and the other is simultaneously connected to the other two suspension devices 3 and the other two steering devices 4. That is to say, one of the two electric pumps 2 is used to adjust the two suspensions of the vehicle and the orientation of two wheels of the vehicle (which can be the two wheels located at the front side of the vehicle), and the other is used to adjust the other two suspensions of the vehicle and the orientation of the other two wheels of the vehicle (which can be the two wheels located at the rear side of the vehicle).

[0099] It should be noted that in the above embodiments, only one vehicle controller 1 can be provided, and this controller 1 can be connected to all the electric pumps 2 and control the operation of each electric pump 2 according to the corresponding signals.

[0100] Through the above-mentioned integrated suspension and steering structure provided by the embodiments of the present application, the electric pump 2 is connected to the suspension device 3 through the first output passage 21 and the first return passage 22, and the electric pump 2 is connected to the steering device 4 through the second output passage 23 and the second return passage 24. The controller 1 can control the opening or closing of the electric pump 2 according to signals, so that the electric pump 2 can pump hydraulic fluid into the suspension device 3 and / or the steering device 4, thereby realizing the adjustment of the vehicle body height and the wheel orientation. In this way, the suspension device 3 and the steering device 4 are integrated into the same control system, achieving the unified control of the vehicle suspension and steering, thereby reducing the complexity of the vehicle structure, lowering the vehicle manufacturing cost, and at the same time increasing the occupancy rate of the vehicle chassis space.

[0101] Based on the same inventive concept, the embodiments of the present application disclose a vehicle, including any one of the integrated suspension and steering structures as described above in the previous text of the embodiments of the present application.

[0102] Figure 11 The schematic diagram of the step flow of a control method for an integrated suspension and steering structure is shown.

[0103] Referring to Figure 11 as shown, the control method includes:

[0104] Step S01: Use the driving device to receive the suspension sensor signal, the steering wheel angle sensor signal, and the acceleration sensor signal.

[0105] Specifically, the driving device includes the controller 1 and the electric pump 2. The controller 1 can be the ECU on the vehicle. The controller 1 is connected to the suspension sensor, the steering wheel angle sensor, and the acceleration sensor. After the controller 1 receives these signals, the controller 1 can also issue control instructions according to these signals, so that the electric pump 2 outputs hydraulic fluid.

[0106] Step S02: According to the suspension sensor signal, make the driving device control the suspension device 3 through the first output passage 21 and the first return passage 22 to change the vehicle body height.

[0107] Specifically, the controller 1 controls the electric pump 2 to pump hydraulic fluid into different positions of the suspension device 3 through the first output passage 21, so that the suspension device 3, which is a hydraulic structure itself, can generate structural deformation, thereby enabling the suspension device 3 to change the vehicle body height.

[0108] Step S03: According to the steering wheel angle sensor signal and the acceleration sensor signal, make the driving device control the steering device 4 through the second output passage 23 and the second return passage 24 to change the orientation of at least one wheel of the vehicle.

[0109] Specifically, the controller 1 controls the electric pump 2 to pump hydraulic fluid through the first output passage 21 and the second output passage 23 to different positions of the steering device 4, so that the steering device 4, which is a hydraulic structure itself, can generate structural deformation, thereby enabling the steering device 4 to change the orientation of at least one wheel of the vehicle.

[0110] Moreover, since the second output passage 23 communicates with the first output passage 21 and the second return passage 24 communicates with the first return passage 22, the electric pump 2 can control the suspension device 3 and the steering device 4 separately or simultaneously, thus making the control of the vehicle suspension and steering more convenient.

[0111] Meanwhile, in the embodiment of the present application, the driving device can drive at least one of the suspension device 3 and the steering device 4 to start working. Therefore, the control method for the suspension device 3 and the steering device 4 is independent of each other, and thus the control of the vehicle suspension device 3 and the steering device 4 can be achieved simultaneously through the control method.

[0112] It should be noted that the embodiments in this specification are all described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other.

[0113] It should also be noted that in this text, the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the present application. In addition, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations, nor can they be understood as indicating or implying relative importance. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or terminal device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or terminal device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the process, method, article or terminal device including the element.

[0114] The above has introduced the technical solution provided by this application in detail. Specific examples are used herein to elaborate on the principle and implementation manner of this application. The description of the above embodiments is only for helping to understand this application, and the content of this specification should not be construed as a limitation to this application. At the same time, for those of ordinary skill in the art, based on this application, there will be various changes in the specific implementation manner and application scope. It is not necessary and impossible to enumerate all the implementation manners here, and the obvious changes or variations derived therefrom are still within the protection scope of this application.

Claims

1. A suspension and steering integrated structure, characterized in that, it includes: a driving device, at least one suspension device and at least one steering device; The driving device is communicated with the suspension device through a first output passage and a first return passage, and the suspension device is used to adjust the body height of the vehicle; The driving device is communicated with the steering device through a second output passage and a second return passage, and the steering device is used to adjust the orientation of at least one wheel of the vehicle; The driving device is used to drive at least one of the suspension device and the steering device to start working.

2. The suspension and steering integrated structure according to claim 1, characterized in that: One end of the second output passage is communicated with the first output passage, and the other end is communicated with the steering device; One end of the second return passage is communicated with the first return passage, and the other end is communicated with the steering device.

3. The suspension and steering integrated structure according to claim 1, characterized in that: The steering device includes a second reversing valve, a third connecting passage, a fourth connecting passage and a steering hydraulic cylinder; The steering hydraulic cylinder includes a hydraulic left chamber and a hydraulic right chamber. One end of the third connecting passage is communicated with the hydraulic left chamber, and one end of the fourth connecting passage is communicated with the hydraulic right chamber; The second output passage, the second return passage, the third connecting passage and the fourth connecting passage are respectively connected to different ports of the second reversing valve; The second reversing valve is configured with multiple working modes. In different working modes, the second output passage, the second return passage, the third connecting passage and the fourth connecting passage are in different communication states.

4. The suspension and steering integrated structure according to claim 3, characterized in that: The multiple working modes include a first working mode, a second working mode and a third working mode; In the first working mode, the second output passage is communicated with the third connecting passage, and the second return passage is communicated with the fourth connecting passage; In the second working mode, the second output passage, the third connecting passage, the second return passage and the fourth connecting passage are all not communicated; In the third working mode, the second output passage is communicated with the fourth connecting passage, and the second return passage is communicated with the third connecting passage.

5. The suspension and steering integrated structure according to claim 3, characterized in that: The steering device further includes a third throttle valve and a fourth throttle valve; Wherein, the third throttle valve is arranged on the third connecting passage, and the fourth throttle valve is arranged on the fourth connecting passage.

6. The suspension and steering integrated structure according to claim 5, characterized in that: The steering device further includes a third hydraulic accumulator and a fourth hydraulic accumulator; Wherein, the third hydraulic accumulator is arranged on the third connecting passage, and the fourth hydraulic accumulator is arranged on the fourth connecting passage.

7. The suspension and steering integrated structure according to claim 3, characterized in that: A hydraulic push rod is arranged inside the steering hydraulic cylinder, and one or both ends of the hydraulic push rod extend outside the steering hydraulic cylinder; A ball head structure and a steering tie rod are arranged on the end part of the hydraulic push rod located outside the steering hydraulic cylinder, and the hydraulic push rod is connected to the vehicle wheel through the ball head structure and the steering tie rod.

8. The integrated suspension and steering structure according to claim 1, characterized in that: The suspension device includes a first reversing valve, a first connection passage, a second connection passage and a shock absorber hydraulic cylinder. The shock absorber hydraulic cylinder includes a shock absorber upper chamber and a shock absorber lower chamber. One end of the first connection passage communicates with the shock absorber lower chamber, and one end of the second connection passage communicates with the shock absorber upper chamber; The first output passage, the first return passage, the first connection passage and the second connection passage are respectively connected to different ports of the first reversing valve; The first reversing valve is configured with multiple working modes. In different working modes, the first output passage, the first return passage, the first connection passage and the second connection passage are in different communication states.

9. The integrated suspension and steering structure according to claim 8, characterized in that: The multiple working modes include a first working mode, a second working mode and a third working mode; In the first working mode, the first output passage communicates with the first connection passage, and the second return passage communicates with the second connection passage; In the second working mode, the first output passage, the first connection passage, the first return passage and the second connection passage are all not in communication; In the third working mode, the first output passage communicates with the second connection passage, and the first return passage communicates with the first connection passage.

10. The integrated suspension and steering structure according to claims 1-9, characterized in that: The driving device includes an electric pump and a controller. The controller is connected to the electric pump. The electric pump is connected to the suspension device through the first output passage and the first return passage, and the electric pump is connected to the steering device through the second output passage and the second return passage; The controller is used to make the electric pump output oil to at least one of the first output passage and the second output passage according to a signal.

11. The integrated suspension and steering structure according to claim 10, characterized in that: There are four suspension devices, four steering devices and four electric pumps, and each electric pump is respectively connected to the corresponding suspension device and steering device.

12. The integrated suspension and steering structure according to claim 10, characterized in that: There are four suspension devices and four driving pumps, and two steering devices; Each electric pump is respectively connected to the corresponding suspension device, and two of the four electric pumps are respectively connected to one steering device.

13. The integrated suspension and steering structure according to claim 10, characterized in that: Four of the suspension devices and the steering devices are provided, and two of the drive pumps are provided; Each of the electric pumps is respectively connected to two of the suspension devices and two of the steering devices.

14. The integrated suspension and steering structure according to claim 10, characterized in that: A plurality of the suspension devices and the steering devices are provided, and one electric pump is provided; One electric pump is simultaneously connected to a plurality of the suspension devices and a plurality of the steering devices.

15. A control method for an integrated suspension and steering structure, characterized in that, the control method includes: Receiving a suspension sensor signal, a steering wheel angle sensor signal, and an acceleration sensor signal by using a drive device; Controlling the suspension device by the drive device through a first output path and a first return path according to the suspension sensor signal to change the vehicle body height; Controlling the steering device by the drive device through a second output path and a second return path according to the steering wheel angle sensor signal and the acceleration sensor signal to change the orientation of at least one wheel of the vehicle; wherein the drive device is used to drive at least one of the suspension device and the steering device to start working.

16. A vehicle, characterized in that, it includes the integrated suspension and steering structure according to any one of claims 1-14.

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