Pump device, suspension system and vehicle

Abstract

According to the pump device, the suspension system and the vehicle, the pump device comprises a driving mechanism, a speed reducing mechanism and a hydraulic pump, the speed reducing mechanism is in transmission connection with the driving mechanism, the hydraulic pump is in transmission connection with the speed reducing mechanism, the hydraulic pump is only provided with one output end, and the output end is suitable for being communicated with a shock absorber of one wheel. The speed reducing mechanism is in transmission connection with the driving mechanism, the hydraulic pump is in transmission connection with the speed reducing mechanism, the hydraulic pump is only provided with one output end, and the output end is suitable for being communicated with a shock absorber of one wheel, so that the high rotating speed of the driving mechanism can obtain the low rotating speed required by the hydraulic pump after speed reduction of the speed reducing mechanism, and the size of the driving mechanism is reduced. The arrangement of the pump device in a limited space is facilitated, and the space requirement is better met.

Description

Technical Field

[0001] The present invention relates to the technical field of pumps, and particularly to a pump device, a suspension system and a vehicle. Background Art

[0002] An automotive suspension system is one of the important components of an automobile. It connects the vehicle body and the wheels, absorbs road impacts and vibrations, and improves the stability and comfort of the vehicle. The automotive suspension system plays an important role and significance in improving the vehicle performance and comfort. It can not only reduce the frequency of vehicle failures, but also improve the stability, handling performance and braking performance of the vehicle.

[0003] An active suspension system uses sensors to collect vehicle state information, and electronically controls a hydraulic pump to output or recover hydraulic oil to adjust the damping of a single wheel, providing real-time adaptability for changing road conditions.

[0004] In the prior art, the motor and the pump are directly connected. The motor speed is limited and the torque is large, resulting in a large volume of the motor, which is not conducive to arrangement in a limited space. Summary of the Invention

[0005] The object of the present invention is to provide a pump device, a suspension system and a vehicle, so as to solve the problem that the motor and the pump are directly connected, the motor speed is limited and the torque is large, resulting in a large volume of the motor, which is not conducive to arrangement in a limited space.

[0006] To achieve the object of the present invention, the present invention provides the following technical solutions:

[0007] In a first aspect, the present invention provides a pump device, comprising: a driving mechanism; a speed reduction mechanism, which is in transmission connection with the driving mechanism; a hydraulic pump, which is in transmission connection with the speed reduction mechanism. The hydraulic pump has only one output end, and the output end is adapted to communicate with a shock absorber of one of the wheels.

[0008] In an embodiment, the driving mechanism, the speed reduction mechanism and the hydraulic pump are arranged in sequence in a first direction.

[0009] In an embodiment, the output shaft of the driving mechanism and the rotating shaft of the hydraulic pump both extend along the first direction and coincide, or the output shaft of the driving mechanism and the rotating shaft of the hydraulic pump both extend along the first direction and are spaced apart in a second direction, and the second direction is perpendicular to the first direction.

[0010] In an embodiment, the hydraulic pump is arranged side by side with the driving mechanism, and the speed reduction mechanism is arranged on the same side of the driving mechanism and the hydraulic pump.

[0011] In one embodiment, the hydraulic pump is provided with a first oil port and a second oil port, the first oil port and the second oil port constitute the output end, and the first oil port and the second oil port are both used to communicate with the shock absorber and to transport oil.

[0012] In one embodiment, the pump device further includes a first pipeline and a second pipeline, the first pipeline is connected to the first oil port, the second pipeline is connected to the second oil port, and the first pipeline and the second pipeline are both suitable for connecting to the shock absorber and used for oil transportation.

[0013] In one embodiment, the motor hydraulic pump device further includes a control component, and the control component is electrically connected to the driving mechanism.

[0014] In a second aspect, the present invention further provides a suspension system, comprising a shock absorber and a pump device according to any one of the various embodiments of the first aspect, wherein the shock absorber is connected to a hydraulic pump of the pump device.

[0015] In one embodiment, the pump device also includes a first pipeline and a second pipeline, the first pipeline and the second pipeline are both connected to the hydraulic pump, the first pipeline and the second pipeline are both connected to the shock absorber and are used for oil transportation; the shock absorber includes a cylinder body and a piston, the cylinder body encloses a pressure chamber, the piston is accommodated in the pressure chamber, and the pressure chamber is divided into a first chamber and a second chamber, the first chamber is connected to the first pipeline, and the second chamber is connected to the second pipeline.

[0016] In a third aspect, the present invention further provides a vehicle, comprising the suspension system described in any one of the various embodiments of the second aspect.

[0017] The pump device provided by the present invention is provided with a driving mechanism, a reduction mechanism and a hydraulic pump. The reduction mechanism is transmission-connected to the driving mechanism, and the hydraulic pump is transmission-connected to the reduction mechanism. The hydraulic pump has only one output end, and the output end is suitable for being connected to the shock absorber of one of the wheels, so that the high speed of the driving mechanism can be reduced by the reduction mechanism to obtain the low speed required by the hydraulic pump, so that the volume of the driving mechanism is reduced, which is conducive to arranging the pump device in a limited space and better meeting the space requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1Schematic diagram of a suspension system and a wheel of an embodiment;

[0020] Figure 2 Schematic diagram of a pump device of an embodiment;

[0021] Figure 3 Schematic diagram of another pump device of an embodiment;

[0022] Figure 4 Schematic diagram of another pump device of an embodiment;

[0023] Figure 5 Schematic diagram of another pump device of an embodiment.

[0024] Explanation of reference numerals:

[0025] 100 - Suspension system;

[0026] 10 - Shock absorber, 11 - Cylinder block, 12 - Piston, 13 - Pressure chamber, 131 - First chamber, 132 - Second chamber, 14 - Connecting rod, 15 - Piston rod;

[0027] 20 - Pump device, 21 - Driving mechanism, 22 - Reduction mechanism, 23 - Hydraulic pump, 231 - Output end, 24 - First pipeline, 25 - Second pipeline, 26 - Control member;

[0028] 200 - Wheel;

[0029] X - First direction, Y - Second direction. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] It should be noted that when a component is referred to as "fixed to" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time.

[0032] Unless otherwise defined, all technical and scientific terms used in the present invention have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention in the specification are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in the present invention includes any and all combinations of one or more of the related listed items.

[0033] The following will describe in detail some embodiments of the present invention with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0034] Please refer to Figure 1 , the present invention provides a vehicle (not shown), including a suspension system 100 in the embodiments of the present invention. The vehicle can be a fuel vehicle, an electric vehicle, a hybrid vehicle, etc. The suspension system 100 in the embodiments of the present invention is applied to the chassis (not shown) of the vehicle. The suspension system 100 is fixed to the chassis and connected to the wheels 200 of the vehicle. When the vehicle is running, the vibrations generated by the wheels 200 due to the undulations of the road surface are absorbed by the suspension system 100 in the embodiments of the present invention.

[0035] The vehicle adopts the suspension system 100 in the embodiments of the present invention, which realizes the reduction of the volume of the motor of the suspension system 100, is beneficial to the layout in a limited space, better meets the space requirements, and at the same time effectively improves the ride comfort and handling stability of the vehicle, and improves the driving comfort and safety.

[0036] Please refer to Figure 1 , the present invention also provides a suspension system 100, including a shock absorber 10 and a pump device 20 in the embodiments of the present invention. The shock absorber 10 is communicated with a hydraulic pump 23 of the pump device 20. The shock absorber 10 is fixed to the chassis and connected to the wheels 200. Hydraulic oil (not shown) is injected into the shock absorber 10, and the hydraulic oil flows under the control of the pump device 20 in the embodiments of the present invention, so that the energy of the vibration of the wheels 200 is converted into heat energy generated by friction when the hydraulic oil flows.

[0037] Optionally, there are multiple shock absorbers 10, and shock absorbers 10 are provided for multiple wheels 200 of the vehicle. Optionally, the shock absorber 10 can be a telescopic hydraulic shock absorber, a wheel reduction bridge hydraulic shock absorber, a conical hydraulic shock absorber, etc., without limitation. Optionally, transformer oil, silicone oil, fluorine oil, polyether ether ketone solution, polyimide solution, etc. can also be injected into the shock absorber 10 to replace the hydraulic oil, without limitation.

[0038] The suspension system 100 provided by the present invention realizes the reduction of the volume of the motor of the suspension system 100 by adopting the shock absorber 10 and the pump device 20 in the embodiments of the present invention. The shock absorber 10 is communicated with the hydraulic pump 23 of the pump device 20, which is beneficial to the layout in a limited space, better meets the space requirements, effectively improves the driving smoothness and handling stability of the vehicle, and improves the driving comfort and safety.

[0039] Please refer to Figure 1 , the pump device 20 further includes a first pipeline 24 and a second pipeline 25. Both the first pipeline 24 and the second pipeline 25 are communicated with the hydraulic pump 23, and both the first pipeline 24 and the second pipeline 25 are communicated with the shock absorber 10 and used for oil transmission. The shock absorber 10 includes a cylinder block 11 and a piston 12. The cylinder block 11 encloses to form a pressure chamber 13. The piston 12 is received in the pressure chamber 13 and divides the pressure chamber 13 into a first chamber 131 and a second chamber 132. The first chamber 131 is communicated with the first pipeline 24, and the second chamber 132 is communicated with the second pipeline 25.

[0040] Optionally, the shock absorber 10 further includes a connecting rod 14 and a piston rod 15. One end of the piston rod 15 is connected to the piston 12, and the other end is connected to the connecting rod 14. The end of the connecting rod 14 away from the piston rod 15 is connected to the wheel 200. The connecting rod 14 and the piston rod 15 are used to transmit the vibration of the wheel 200 to the piston 12. Optionally, the cylinder block 11 can be made of a material that meets the structural strength, is not easily corroded, and is easy to process and form, specifically cast iron, stainless steel, aluminum alloy, etc., without limitation. Optionally, the piston 12 can be made of a material that meets the structural strength, is not easily corroded, and is easy to process and form, specifically copper alloy, titanium alloy, aluminum alloy, etc., without limitation. Optionally, the materials of the piston rod 15 and the connecting rod 14 are similar to those of the cylinder block 11, which can be referred to and will not be elaborated here.

[0041] By arranging the cylinder block 11 and the piston 12, the cylinder block 11 encloses to form a pressure chamber 13, the piston 12 is received in the pressure chamber 13 and divides the pressure chamber 13 into a first chamber 131 and a second chamber 132. The first chamber 131 is communicated with the first pipeline 24 of the pump device 20, and the second chamber 132 is communicated with the second pipeline 25 of the pump device 20, so that the pump device 20 can push the piston 12 to move by controlling the inflow and outflow of the hydraulic oil in the first chamber 131 and the second chamber 132, and absorb the vibration of the wheel 200.

[0042] Please refer to Figure 1 , the present invention further provides a pump device 20, including a driving mechanism 21, a reduction mechanism 22 and a hydraulic pump 23.

[0043] The drive mechanism 21 is fixed to the chassis or a bracket structure (not shown) on the chassis, etc. The drive mechanism 21 is used to provide power with different powers and directions to the hydraulic pump 23. Exemplarily, the drive mechanism 21 is a motor, specifically, it can be a DC motor, an AC motor, a permanent magnet synchronous motor, a switched reluctance motor, a stepper motor, a linear motor, etc., without limitation. Optionally, the drive mechanism 21 includes an output shaft (not shown), and the output shaft is in transmission connection with the reduction mechanism 22.

[0044] The reduction mechanism 22 is in transmission connection with the drive mechanism 21. The reduction mechanism 22 is in transmission connection with the output shaft of the drive mechanism 21 and converts the rotational speed output by the output shaft into the rotational speed required by the hydraulic pump 23.

[0045] Optionally, the reduction mechanism 22 can be a direct-coupled reducer, a parallel-axis reducer, a vertical-axis reducer, etc., without limitation.

[0046] When the reduction mechanism 22 adopts a direct-coupled reducer, the structure of the direct-coupled reducer is simple. The direct-coupled reducer can be directly connected to the drive mechanism 21, with high transmission efficiency and low cost. However, since the rotational speed of the drive mechanism 21 must match that of the direct-coupled reducer, when the rotational speed of the drive mechanism 21 is too high or too low, the direct-coupled reducer cannot be directly connected.

[0047] When a parallel-axis reducer is adopted, the parallel-axis reducer has a small volume, can be directly connected to the drive mechanism 21, has a small backlash, high transmission efficiency, a wide reduction range, high precision, a very long service life, and can have a large additional output torque. However, it mostly uses belt drive, and problems such as belt slipping, belt damage, and aging are likely to occur.

[0048] When a vertical-axis reducer is adopted, the vertical-axis reducer has a compact structure, can be directly connected to the drive mechanism 21, and compared with the direct-coupled reducer and the parallel-axis reducer, the vertical-axis reducer has a smaller volume. However, due to the small volume of the vertical-axis reducer and its direct connection to the motor, maintenance is difficult and the equipment cost is relatively high.

[0049] The hydraulic pump 23 is in transmission connection with the reduction mechanism 22. The hydraulic pump 23 has only one output end 231, and the output end 231 is adapted to communicate with the shock absorber 10 of one of the wheels 200. Exemplarily, the hydraulic pump 23 is an internal gear pump. Optionally, the hydraulic pump 23 can also adopt an external gear pump, a piston pump, a vane pump, a screw pump, a rotor pump, etc., without limitation.

[0050] By providing a driving mechanism 21, a speed reduction mechanism 22, and a hydraulic pump 23, the speed reduction mechanism 22 is in transmission connection with the driving mechanism 21, and the hydraulic pump 23 is in transmission connection with the speed reduction mechanism 22. The hydraulic pump 23 has only one output end 231, and the output end 231 is adapted to communicate with a shock absorber 10 of one of the wheels 200, so that the high rotational speed of the driving mechanism 21 can be reduced by the speed reduction mechanism 22 to obtain the low rotational speed required by the hydraulic pump 23, thereby reducing the volume of the driving mechanism 21, which is beneficial to arranging the pump device 20 in a limited space and better meeting the space requirements.

[0051] Please refer to Figure 2 and Figure 3 , the driving mechanism 21, the speed reduction mechanism 22, and the hydraulic pump 23 are arranged in sequence in a first direction. The first direction corresponds to the axial direction of the output shaft of the driving mechanism 21. Optionally, the direction corresponding to the radial direction of the driving mechanism 21 is the second direction.

[0052] By arranging the driving mechanism 21, the speed reduction mechanism 22, and the hydraulic pump 23 in sequence in the first direction, the space occupied by the pump device 20 in the second direction is small, which is beneficial to being arranged in a vehicle space with limited space in the second direction and better meeting the space requirements.

[0053] Please refer to Figure 2 and Figure 3 , the output shaft of the driving mechanism 21 and the rotating shaft (not shown) of the hydraulic pump 23 both extend along the first direction and coincide, or the output shaft of the driving mechanism 21 and the rotating shaft of the hydraulic pump 23 both extend along the first direction and are spaced apart in the second direction, and the second direction is perpendicular to the first direction.

[0054] When the output shaft of the driving mechanism 21 and the rotating shaft of the hydraulic pump 23 both extend along the first direction and coincide, the space occupied by the pump device 20 in the second direction is small, which is beneficial to being arranged in a vehicle space with limited space in the second direction and better meeting the space requirements.

[0055] When the output shaft of the driving mechanism 21 and the rotating shaft of the hydraulic pump 23 both extend along the first direction and are spaced apart in the second direction, the available space of the speed reduction mechanism 22 in the second direction is increased, the speed ratio of the speed reduction mechanism 22 is increased, the size of the driving mechanism 21 is further reduced, which is beneficial to arranging the pump device 20 in a limited space and better meeting the space requirements.

[0056] By setting the output shaft of the driving mechanism 21 and the rotating shaft of the hydraulic pump 23 to both extend along the first direction and coincide, or by setting the output shaft of the driving mechanism 21 and the rotating shaft of the hydraulic pump 23 to both extend along the first direction and be spaced apart in the second direction, where the second direction is perpendicular to the first direction, the space occupied by the pump device 20 in the second direction is small, and the size of the reduction mechanism 22 in the second direction can be increased to increase the reduction ratio of the reduction mechanism 22, thereby further reducing the size of the driving mechanism 21, which is beneficial to arranging the pump device 20 in a limited space and better meeting the space requirements.

[0057] Please refer to Figure 4 , the hydraulic pump 23 is arranged side by side with the driving mechanism 21, and the reduction mechanism 22 is arranged on the same side of the driving mechanism 21 and the hydraulic pump 23.

[0058] By arranging the hydraulic pump 23 side by side with the driving mechanism 21 and arranging the reduction mechanism 22 on the same side of the driving mechanism 21 and the hydraulic pump 23, the size occupied by the pump device 20 in the first direction is small, and the available space of the reduction mechanism 22 in the second direction is increased, increasing the reduction ratio of the reduction mechanism 22 and further reducing the size of the driving mechanism 21, which is beneficial to arranging the pump device 20 in a limited space and better meeting the space requirements.

[0059] Please refer to Figure 1 , the hydraulic pump 23 is provided with a first oil port (not shown) and a second oil port (not shown), and the first oil port and the second oil port form an output end 231. The first oil port and the second oil port are both used to communicate with the aforementioned shock absorber 10 and for oil transmission. Optionally, both the first oil port and the second oil port can output hydraulic oil or suck in hydraulic oil.

[0060] By setting the hydraulic pump 23 to be provided with a first oil port (not shown) and a second oil port (not shown), the first oil port and the second oil port form an output end 231, the first oil port and the second oil port are both used to communicate with the aforementioned shock absorber 10 and for oil transmission, and both the first oil port and the second oil port can output hydraulic oil or suck in hydraulic oil, the hydraulic pump 23 can communicate with the shock absorber 10 through the first oil port and the second oil port, so that the hydraulic pump 23 only needs to be provided with one output end 231, reducing the volume of the hydraulic pump 23, which is beneficial to arranging the pump device 20 in a limited space and better meeting the space requirements.

[0061] Please refer to Figure 1 , the pump device 20 further includes a first pipeline 24 and a second pipeline 25. The first pipeline 24 communicates with the first oil port, and the second pipeline 25 communicates with the second oil port. The first pipeline 24 and the second pipeline 25 are both used to communicate with the shock absorber 10 and for oil transmission. One end of the first pipeline 24 communicates with the first oil port, and the other end communicates with the aforementioned first chamber 131. One end of the second pipeline 25 communicates with the second oil port, and the other end communicates with the aforementioned second chamber 132.

[0062] Optionally, the first pipeline 24 and the first oil port can be connected and fixed by means such as flange connection, threaded connection, welding, and clamping, without limitation. Optionally, the connection mode between the first pipeline 24 and the first chamber 131 is similar to that between the first pipeline 24 and the first oil port, for reference only and will not be elaborated. Optionally, the connection mode between the second pipeline 25 and the second oil port is similar to that between the first pipeline 24 and the first oil port, for reference only and will not be elaborated. Optionally, the connection mode between the second pipeline 25 and the second chamber 132 is similar to that between the first pipeline 24 and the first oil port, for reference only and will not be elaborated. Optionally, the first pipeline 24 can be made of materials with stable chemical properties, meeting structural strength and high temperature resistance, specifically rubber, copper alloy, aluminum alloy, etc., without limitation. Optionally, the material of the second pipeline 25 is similar to that of the first pipeline 24, for reference only and will not be elaborated.

[0063] By providing the first pipeline 24 and the second pipeline 25, the first pipeline 24 communicates with the first oil port, the second pipeline 25 communicates with the second oil port. Both the first pipeline 24 and the second pipeline 25 are used to communicate with the shock absorber 10 and for oil transmission. One end of the first pipeline 24 communicates with the first oil port, and the other end communicates with the aforementioned first chamber 131. One end of the second pipeline 25 communicates with the second oil port, and the other end communicates with the aforementioned second chamber 132. This enables the pump device 20 and the shock absorber 10 not to be arranged in the same vehicle part, greatly improving the flexibility and simplicity of arranging the pump device 20, facilitating its installation in a vehicle space with limited space in the second direction, and better meeting the space requirements.

[0064] Please refer to Figures 1 to 5 , the pump device 20 further includes a control member 26, and the control member 26 is electrically connected to the drive mechanism 21. The control member 26 is used to control the rotation speed and steering of the drive mechanism 21 according to road surface information, and after the speed reduction by the speed reduction mechanism 22, output the rotation speed and steering required by the hydraulic pump 23, thereby controlling the hydraulic pump 23 to suck in or output hydraulic oil at the first oil port and the second oil port, and controlling the state change of the shock absorber 10.

[0065] Optionally, the control member 26 can be arranged side by side with the drive mechanism 21 in the second direction, or can be arranged sequentially with the drive mechanism 21 in the first direction, without limitation. Optionally, the control member 26 can also be arranged at other parts of the vehicle, and the control member 26 is electrically connected to the drive mechanism 21 through a cable.

[0066] By providing the control member 26, and electrically connecting the control member 26 to the drive mechanism 21, the vehicle can control the rotation speed and steering of the drive mechanism 21 through the control member 26, thereby adjusting the working state of the hydraulic pump 23, so that the shock absorber 10 absorbs vehicle vibrations.

[0067] The working state of the pump device 20 in the embodiments of the present invention is as follows:

[0068] Vehicle chassis rising state: The control member 26 controls the drive mechanism 21 to output a first rotation direction and a first rotation speed. The first rotation speed is converted into a second rotation speed by the reduction mechanism 22 and transmitted to the hydraulic pump 23. The hydraulic pump 23 injects hydraulic oil into the first chamber 131 through the first pipeline 24, and sucks the hydraulic oil in the second chamber 132 through the second pipeline 25. The volume of the first chamber 131 increases, the volume of the second chamber 132 decreases, the piston 12 moves in a direction away from the ground, and the vehicle chassis rises. Among them, according to different road conditions, the first rotation speed is different, so the third rotation speed output to the hydraulic pump 23 is different.

[0069] Vehicle chassis descending state: The control member 26 controls the drive mechanism 21 to output a second rotation direction and a third rotation speed. The third rotation speed is converted into a fourth rotation speed by the reduction mechanism 22 and transmitted to the hydraulic pump 23. The hydraulic pump 23 injects hydraulic oil into the second chamber 132 through the second pipeline 25, and sucks the hydraulic oil in the first chamber 131 through the first pipeline 24. The volume of the second chamber 132 increases, the volume of the first chamber 131 decreases, the piston 12 moves in a direction close to the ground, and the vehicle chassis descends. Among them, according to different road conditions, the third rotation speed is different, so the fourth rotation speed output to the hydraulic pump 23 is different.

[0070] In the description of the embodiments of the present invention, it should be noted that 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 in the drawings, and is only for the convenience of describing the present invention 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, and therefore should not be construed as a limitation to the present invention.

[0071] The above-disclosed is only a preferred embodiment of the present invention, and of course, it cannot be used to limit the scope of the rights of the present invention. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A pump device, characterized in that, Comprising: A drive mechanism; A reduction mechanism, which is in transmission connection with the drive mechanism; A hydraulic pump, which is in transmission connection with the reduction mechanism. The hydraulic pump has only one output end, and the output end is adapted to communicate with a shock absorber of one of the wheels.

2. The pump device according to claim 1, wherein, The drive mechanism, the reduction mechanism and the hydraulic pump are arranged in sequence in a first direction.

3. The pump device according to claim 2, characterized in that, The output shaft of the drive mechanism and the rotating shaft of the hydraulic pump both extend along the first direction and coincide, or the output shaft of the drive mechanism and the rotating shaft of the hydraulic pump both extend along the first direction and are spaced apart in a second direction, and the second direction is perpendicular to the first direction.

4. The pump device according to claim 1, characterized in that, The hydraulic pump is arranged side by side with the drive mechanism, and the reduction mechanism is arranged on the same side of the drive mechanism and the hydraulic pump.

5. The pump device according to claim 1, characterized in that The hydraulic pump is provided with a first oil port and a second oil port. The first oil port and the second oil port constitute the output end, and both the first oil port and the second oil port are used for communicating with the shock absorber and for oil transmission.

6. The pump device according to claim 1, characterized in that, The pump device further includes a first pipeline and a second pipeline. The first pipeline is communicated with the first oil port, and the second pipeline is communicated with the second oil port. Both the first pipeline and the second pipeline are adapted to communicate with the shock absorber and for oil transmission.

7. The pump device according to any one of claims 1 to 6, characterized in that, The pump device further includes a control member, and the control member is electrically connected to the drive mechanism.

8. A suspension system, characterized in that, Comprising a shock absorber and the pump device according to any one of claims 1-7, wherein the shock absorber is communicated with the hydraulic pump of the pump device.

9. The suspension system according to claim 8, wherein, The pump device further includes a first pipeline and a second pipeline. The first pipeline and the second pipeline are both communicated with the hydraulic pump, and the first pipeline and the second pipeline are both communicated with the shock absorber and for oil transmission; The shock absorber includes a cylinder body and a piston. The cylinder body encloses to form a pressure chamber. The piston is received in the pressure chamber and divides the pressure chamber into a first chamber and a second chamber. The first chamber is communicated with the first pipeline, and the second chamber is communicated with the second pipeline.

10. A vehicle, characterized in that, Comprising the suspension system according to claim 8 or 9.

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