Hydraulic pump apparatus, suspension power apparatus, suspension assembly, and vehicle

Abstract

A hydraulic pump apparatus, a suspension power apparatus, a suspension assembly, and a vehicle. The hydraulic pump apparatus (1) comprises a valve block (11), a pump module (12), and a filter assembly (13). The valve block (11) is connected to the pump module (12), and the valve block (11) is provided with a liquid inlet (111A) which allows a working fluid to flow into the pump module (12). The filter assembly (13) is provided at the liquid inlet (111A) and is used for filtering a working fluid flowing towards the liquid inlet (111A). Using the hydraulic pump apparatus reduces the risk of impurities entering the interior of the hydraulic pump apparatus, thereby reducing the risk of blockage of the hydraulic pump apparatus.

Description

Hydraulic pump device, suspension power device, suspension assembly and vehicle

[0001] The present application claims priority to the Chinese patent application No. 202411314093.5, filed on September 19, 2024, to the Chinese Patent Office, the whole content of the above application being incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the technical field of hydraulic pumps, in particular to a hydraulic pump device, a suspension power device, a suspension assembly and a vehicle. BACKGROUND

[0003] The hydraulic suspension assembly of the vehicle can adjust the height of the vehicle body, improve the operation stability of the vehicle without compromising the comfort of the vehicle, and effectively solve the contradiction between the comfort and the handling stability of the vehicle.

[0004] At present, the structure of the hydraulic suspension assembly is relatively complex, and once the pollutants enter the hydraulic suspension assembly, it is difficult to remove. If the pollutants need to be completely removed, the vehicle body needs to be disassembled, and all parts including pipelines need to be replaced, which is a large amount of work and high cost. TECHNICAL SOLUTION

[0005] In a first aspect, the present application provides a hydraulic pump device, comprising:

[0006] a pump module;

[0007] a valve block connected with the pump module, the valve block being provided with a liquid inlet for working fluid to flow into the pump module; and

[0008] a filter assembly arranged at the liquid inlet and used for filtering the working fluid flowing toward the liquid inlet.

[0009] In some embodiments, the valve block has a first joint surface, the pump module is arranged at the first joint surface, and the liquid inlet is arranged at the first joint surface.

[0010] The filter assembly comprises a planar filter located between the first joint surface and the pump module and shielding the liquid inlet.

[0011] In some embodiments, the first joint surface is further provided with a mounting groove in communication with the liquid inlet, and the planar filter is mounted at the bottom of the mounting groove.

[0012] In some embodiments, the first joint surface further comprises a liquid storage groove, a joint surface apex and a joint surface bottom point; the joint surface apex is located at the top of the first joint surface, and the joint surface bottom point is located at the bottom of the first joint surface.

[0013] The liquid storage tank is in communication with the liquid inlet and is located between the top point of the joint surface and the bottom point of the joint surface, and the vertical distance from the liquid storage tank to the top point of the joint surface is less than the distance from the liquid storage tank to the bottom point of the joint surface.

[0014] In some embodiments, the number of liquid inlets is multiple, and at least two liquid inlets are located on both sides of the liquid storage tank, respectively.

[0015] In some embodiments, the vertical distances from the two liquid inlets to the bottom point of the joint surface are different.

[0016] In some embodiments, the two planar filters shield the two liquid inlets, respectively.

[0017] In some embodiments, the planar filter is sealingly mounted on the first joint surface.

[0018] In some embodiments, the pump module is sealingly mounted on the planar filter.

[0019] In some embodiments, the pump module is provided with a pump inlet and a pump filter device arranged at the pump inlet, and the pump filter device is used for filtering the working fluid flowing into the pump inlet.

[0020] In some embodiments, the first joint surface is further provided with a flow channel, and the flow channel is arranged between the two liquid inlets and is in communication with the two liquid inlets and the liquid storage tank.

[0021] In some embodiments, the flow channel includes a main flow channel and a branch flow channel, the main flow channel is arranged between the two liquid inlets and is in communication with the two liquid inlets, and the branch flow channel is arranged between the main flow channel and the liquid storage tank and is in communication with the main flow channel and the liquid storage tank.

[0022] In some embodiments, the extension direction of the main flow channel intersects with the extension direction of the two liquid inlets.

[0023] In some embodiments, the valve block further includes a second joint surface, and the second joint surface is oppositely arranged with the first joint surface; the hydraulic pump device further includes a driving mechanism for driving the pump module, and the driving mechanism is arranged on the second joint surface.

[0024] In some embodiments, the valve block further includes a through hole, and the through hole penetrates the valve block in the direction in which the first joint surface points to the second joint surface; the hydraulic pump device further includes a shaft coupling, and the shaft coupling is arranged in the through hole, and the pump module is connected with the driving shaft of the driving mechanism through the shaft coupling.

[0025] In some embodiments, the hydraulic pump device further comprises a seal disposed between the drive shaft and a sidewall of the through hole.

[0026] In a second aspect, the present application provides a suspension power device, comprising the hydraulic pump device as described above.

[0027] In a third aspect, the present application provides a suspension assembly, comprising the suspension power device as described above, and a suspension device connected between a vehicle body and a vehicle wheel, wherein the suspension power device is configured to supply the working fluid to the suspension device or to recover the working fluid.

[0028] In a fourth aspect, the present application provides a vehicle, comprising the suspension power device as described above, or the suspension assembly as described above. Advantages

[0029] In the hydraulic pump device of the vehicle provided by the present application, the filter assembly is arranged at the liquid inlet of the valve block to filter the working fluid flowing to the liquid inlet, the filter assembly isolates impurities outside the hydraulic pump device, reduces the risk of impurities entering the interior of the hydraulic pump device, and further reduces the risk of blockage of the hydraulic pump device.

[0030] The suspension power device, the suspension assembly and the vehicle provided by the present application use the hydraulic pump device described above, reduce the risk of impurities entering the interior of the hydraulic pump device, and further reduce the risk of blockage of the hydraulic pump device. BRIEF DESCRIPTION OF DRAWINGS

[0031] The following drawings of the embodiments of the present application are hereby incorporated into this application as part of the present application for understanding the present application. The embodiments of the present application and their description shown in the drawings are used to explain the principles of the present application. In the drawings,

[0032] FIG. 1 is a perspective structural schematic view of a hydraulic pump device provided in an exemplary embodiment of the present application;

[0033] FIG. 2 is a perspective structural schematic view of a valve block provided in an exemplary embodiment of the present application;

[0034] FIG. 3 is a perspective structural schematic view of a filter screen assembly installed on the valve block provided in an exemplary embodiment of the present application;

[0035] FIG. 4 is a plan schematic view of the valve block shown in FIG. 3;

[0036] FIG. 5 is a partial cross-sectional structural schematic view of a hydraulic pump device provided in an exemplary embodiment of the present application;

[0037] FIG. 6 is a cross-sectional structural schematic view of a hydraulic pump device provided in an exemplary embodiment of the present application;

[0038] Fig. 7 is a perspective view of a suspension power device according to an exemplary embodiment of the present application;

[0039] Fig. 8 is a partial cross-sectional view of the suspension power device shown in Fig. 7;

[0040] Fig. 9 is a structural block diagram of a suspension assembly according to an exemplary embodiment of the present application;

[0041] Fig. 10 is a structural block diagram of a vehicle according to an exemplary embodiment of the present application.

[0042] Reference Signs: 1, hydraulic pump device; 11, valve block; 111, first joint surface; 111A, liquid inlet; 111B, mounting groove; 111C, liquid storage groove; 111D, flow channel; 111D1, main flow channel; 111D2, branch flow channel; 111E, joint surface apex; 111F, joint surface bottom; 112, second joint surface; 114, annular groove; 115, through hole; 12, pump module; 121, pump inlet; 122, pump filter device; 123, pump shaft; 124, pump cavity; 125, pressurizing mechanism; 13, filter assembly; 131, planar filter; 14, driving mechanism; 141, driving shaft; 15, coupling; 16, sealing member; 2, suspension power device; 21, liquid storage housing; 21A, cavity; 3, suspension assembly; 31, suspension device; 32, oil passage; 4, vehicle.

[0043] Embodiments of the present application

[0044] According to a first aspect of the present application, referring to Figs. 1-6, the present application provides a hydraulic pump device 1. The hydraulic pump device 1 is configured to suck in low-pressure working fluid and output high-pressure working fluid after pressurizing the low-pressure working fluid.

[0045] Referring to Figs. 1-6, the hydraulic pump device 1 comprises a valve block 11, a pump module 12, and a filter assembly 13. The valve block 11 is connected to the pump module 12. The valve block 11 is provided with a liquid inlet 111A for the working fluid to flow into the pump module 12. The filter assembly 13 is arranged at the liquid inlet 111A and configured to filter the working fluid flowing into at least one liquid inlet 111A.

[0046] In the above-mentioned hydraulic pump device 1, during the operation of the hydraulic pump device 1, the filter assembly 13 at the liquid inlet 111A filters the working fluid flowing into at least one liquid inlet 111A, and the filter assembly 13 isolates the impurities in the working fluid outside the hydraulic pump device 1, thereby reducing the risk of impurities entering the interior of the hydraulic pump device 1 and further reducing the risk of blockage of the hydraulic pump device 1.

[0047] The number of the liquid inlets 111A can be one, two or more. The number of the liquid inlets 111A can control the flow of the working fluid into the hydraulic pump device 1. The greater the number and the opening area of the liquid inlets 111A, the greater the flow of the working fluid into the hydraulic pump device 1.

[0048] In some embodiments, the working fluid can have at least one of a cooling function and a lubricating function. In some embodiments, the working fluid can include a coolant, but is not limited thereto.

[0049] Referring to FIGS. 2 to 4, in some embodiments, one end of the valve block 11 has a first coupling surface 111, and the liquid inlets 111A are located on the first coupling surface 111. The pump module 12 is arranged on the first coupling surface 111 and avoids the liquid inlets 111A, so that the working fluid flows into the valve block 11 from one or more liquid inlets 111A. The filter assembly 13 includes a planar filter 131, which is located between the first coupling surface 111 and the pump module 12 and blocks at least one liquid inlet 111A. In this way, the planar filter 131 not only plays a filtering role on impurities at the position of the liquid inlets 111A, but also is installed on the surface of the valve block 11, so that the impurities remaining on the planar filter 131 are more likely to fall due to their own weight and the impact force of the working fluid. The impurities do not stay on the surface of the planar filter 131, thereby reducing the cleaning difficulty of the impurities on the planar filter 131 to ensure the filtering performance of the planar filter 131.

[0050] In some embodiments, the pump module 12 is provided with a positioning pin hole, and the pump module 12 is positioned on the valve block 11 by a positioning pin and is detachably installed on the first coupling surface 111.

[0051] In some embodiments, the planar filter 131 can include but is not limited to a planar filter screen. The planar filter screen can include at least one of a metal and a fiber material. The metal includes but is not limited to stainless steel. The fiber material includes but is not limited to glass fiber.

[0052] In some embodiments, the planar filter 131 has appropriate filtering precision, which takes into account its filtering effect while improving the flow of the working fluid through the planar filter 131.

[0053] In some embodiments, the filter assembly 13 can further include a filter screen support frame (not shown in the figure), which is arranged around and connected with the planar filter 131. In this way, the installation of the planar filter 131 can be achieved by fixing the filter screen support frame.

[0054] Referring to FIG. 2, in some embodiments, the first joint surface 111 is further provided with a mounting groove 111B2, which is arranged above and in communication with the at least one liquid inlet 111A, and the planar filter 131 is mounted on the bottom of the mounting groove 111B2. In this way, the working fluid flowing to the liquid inlet 111A is more likely to flow into the planar filter 131, improving the filtering efficiency and increasing the flow of the working fluid into the valve block 11.

[0055] Referring to FIG. 2, in some embodiments, when the liquid inlet 111A is formed by the inward recess of the first joint surface 111, the liquid inlet 111A cooperates with the mounting groove 111B2 to form a stepped groove. In some embodiments, the shape of the mounting groove 111B2 can be the same as that of the liquid inlet 111A.

[0056] Referring to FIGS. 3 and 4, in some embodiments, the planar filter 131 is sealingly mounted on the first joint surface 111. In this way, the sealing of the planar filter 131 mounted on the first joint surface 111 is improved, and the working fluid is more likely to flow into the planar filter 131 under pressure and enter the inside of the hydraulic pump device 1. Moreover, the risk of impurities in the working fluid entering the inside of the hydraulic pump device 1 from the gap between the planar filter 131 and the first joint surface 111 is reduced.

[0057] In some embodiments, when the planar filter 131 is mounted on the bottom of the mounting groove 111B2, a sealing member (not shown in the figure) can be arranged between the planar filter 131 and the mounting surface 111B1 (the bottom of the mounting groove 111B2) to achieve a sealing connection between the planar filter 131 and the mounting surface 111B1. The sealing member includes but is not limited to sealing glue.

[0058] Referring to FIG. 1, when the planar filter 131 is sealingly mounted on the first joint surface 111, the pump module 12 is sealingly mounted on the planar filter 131. In this way, the sealing of the pump module 12 mounted on the planar filter 131 is improved, and the working fluid is more likely to flow into the planar filter 131 under pressure and enter the inside of the hydraulic pump device 1. Moreover, the risk of impurities in the working fluid entering the inside of the hydraulic pump device 1 from the gap between the planar filter 131 and the pump module 12 is reduced.

[0059] In some embodiments, when the planar filter 131 is mounted on the bottom of the mounting groove 111B2, the planar filter 131 can protrude from the first joint surface 111, and when the pump module 12 is attached to the first joint surface 111, the pump module 12 is also pressed onto the planar filter 131, achieving interference press fitting of the planar filter 131, so that the pump module 12 is sealingly mounted on the planar filter 131.

[0060] Referring to FIGS. 2-4, in some embodiments, the first bonding surface 111 is further provided with a liquid storage groove 111C for storing the working fluid flowing into the valve block 11. The first bonding surface 111 further comprises a bonding surface top point 111E and a bonding surface bottom point 111F. The bonding surface top point 111E is located at the top of the first bonding surface 111, and the bonding surface bottom point 111F is located at the bottom of the first bonding surface 111. The liquid storage groove 111C is in communication with the liquid inlet 111A and is located between the bonding surface top point 111E and the bonding surface bottom point 111F. The vertical distance from the liquid storage groove 111C to the bonding surface top point 111E is less than the distance from the liquid storage groove 111C to the bonding surface bottom point 111F. In this way, the liquid storage groove 111C is arranged close to the bonding surface top point 111E, reducing the risk of impurities accumulating in the liquid storage groove 111C.

[0061] The bonding surface top point 111E is located at the highest point of the first bonding surface 111, and the bonding surface bottom point 111F is located at the lowest point of the first bonding surface 111. In the case where the first bonding surface 111 is circular in shape, the bonding surface top point 111E and the bonding surface bottom point 111F are respectively two points on the diameter.

[0062] Referring to FIGS. 2-4, in some embodiments, the number of liquid inlets 111A is multiple, and at least two liquid inlets 111A are respectively located on both sides of the liquid storage groove 111C and in communication with the liquid storage groove 111C. In this way, it is ensured that the working fluid stably flows from at least two liquid inlets 111A into the liquid storage groove 111C.

[0063] Referring to FIG. 2, in some embodiments, the vertical distances from the two liquid inlets 111A to the bonding surface bottom point 111F are different. In this way, when the first bonding surface 111 is vertically placed, the heights of the two liquid inlets 111A are different, reducing the risk of clogging of the plane filter 131 at the two liquid inlets 111A due to impurity accumulation, reducing the risk of impurities flowing into the hydraulic pump device 1, and ensuring the working fluid to flow from at least one liquid inlet 111A into the liquid storage groove 111C.

[0064] Referring to FIGS. 3 and 4, in some embodiments, in the case where the vertical distances from the two liquid inlets 111A to the bonding surface bottom point 111F are different, the two plane filters 131 are respectively located above and shield the two liquid inlets 111A. In this way, the risk of impurities entering the hydraulic pump device 1 is further reduced. It can be understood that when the number of liquid inlets 111A is more than two, a plane filter 131 can be arranged above each liquid inlet 111A.

[0065] In other embodiments, the distances from the two liquid inlets 111A to the bonding surface bottom point 111F can be the same. In this way, the process difficulty of the two liquid inlets 111A is simplified.

[0066] As shown in FIG. 3 and FIG. 4, when the first joint surface 111 is vertically placed, the planar filter 131 is also vertically placed, and impurities on the planar filter 131 can fall under the action of gravity or the impact force of the working fluid, thereby achieving self-cleaning of the planar filter 131. Moreover, in the case where the distance from the two liquid inlets 111A to the valve block side surface 113 is different, installing the planar filter 131 above the liquid inlet 111A with a lower height is more conducive to reducing the risk of impurities entering the liquid inlet 111A with a lower height.

[0067] The pump module 12 is configured to pressurize and pump out the working fluid after the working fluid flows from the one or more liquid inlets 111A into the liquid storage groove 111C and then flows from the liquid storage groove 111C into the pump module 12. Specifically, the pump module 12 stably sucks in the low-pressure working fluid from the liquid storage groove 111C, pressurizes the low-pressure working fluid, and stably outputs the high-pressure working fluid.

[0068] Referring to FIG. 5, in some embodiments, the pump module 12 is provided with a pump inlet 121 and a pump filter device 122 arranged at the pump inlet 121. The pump inlet 121 faces and is adjacent to the liquid storage groove 111C. The pump filter device 122 is used to filter the working fluid flowing into the pump inlet 121. In this way, the pump filter device 122 plays a second filtering role for impurities, thereby reducing the risk of impurities entering the pump module 12.

[0069] In some embodiments, the pump filter device 122 can be a filter screen installed in the pump inlet 121. The filter screen can include at least one of a planar filter screen and a pouch-shaped filter screen.

[0070] Referring to FIG. 5 and FIG. 6, the pump module 12 is further provided with a pump cavity 124, a pump outlet (not shown in the figure), and a pressurizing mechanism 125. The pump cavity 124 is arranged inside the pump module 12, the pressurizing mechanism 125 is arranged in the pump cavity 124, and the pump inlet 121 and the pump outlet are both in communication with the pump cavity 124. After the low-pressure working fluid flows into the pump cavity 124 from the pump inlet 121, it is pressurized by the pressurizing mechanism 125 to become high-pressure working fluid and is discharged from the pump outlet. In some embodiments, the pressurizing mechanism 125 includes, but is not limited to, a driving gear and a driven gear that mesh with each other.

[0071] Referring to FIGS. 2-4, in some embodiments, the first joint surface 111 is further provided with a flow channel 111D, which is arranged between the two liquid inlets 111A and communicates with the two liquid inlets 111A and the liquid storage groove 111C. In this way, the two liquid inlets 111A and the liquid storage groove 111C are communicated through the flow channel 111D. In some embodiments, the flow channel 111D can be formed by a recess in the first joint surface 111. In other embodiments, part of the flow channel 111D can be formed inside the valve block 11.

[0072] Referring to FIGS. 2-4, in some embodiments, the flow channel 111D includes a main flow channel 111D1 and branch flow channels 111D2. The main flow channel 111D1 is arranged between the two liquid inlets 111A and communicates with the two liquid inlets 111A. The branch flow channels 111D2 are arranged between the main flow channel 111D1 and the liquid storage groove 111C and communicate with the main flow channel 111D1 and the liquid storage groove 111C. In this way, the two liquid inlets 111A are communicated through the main flow channel 111D1, and the liquid storage groove 111C is communicated with the main flow channel 111D1 through the branch flow channels 111D2.

[0073] In some embodiments, the two ends of the main flow channel 111D1 in its extension direction can constitute the two liquid inlets 111A. In this way, the manufacturing process of the valve block 11 is simplified.

[0074] In some embodiments, the number of branch flow channels 111D2 can be one or more. Referring to FIG. 2, in one specific embodiment, the main flow channel 111D1 can be communicated with the liquid storage groove 111C through one branch flow channel 111D2. In another specific embodiment, the main flow channel 111D1 can be communicated with the liquid storage groove 111C through two branch flow channels 111D2, respectively.

[0075] Referring to FIG. 2, in some embodiments, the extension direction of the main flow channel 111D1 intersects with the extension direction of the two liquid inlets 111A. In this way, the position design of the two liquid inlets 111A and the main flow channel 111D1 can be more flexible, and the opening area of the two liquid inlets 111A can be set larger to increase the flow of the working fluid.

[0076] Referring to FIG. 6, in some embodiments, the other end of the valve block 11 has a second joint surface 112, which is arranged opposite to the first joint surface 111. The hydraulic pump device 1 further includes a driving mechanism 14 for driving the pump module 12. The driving mechanism 14 is arranged on the second joint surface 112. In this way, the driving mechanism 14 can drive the pump module 12 to pressurize the working fluid.

[0077] Referring to FIG. 6, in some embodiments, the valve block 11 comprises a through hole 115, the through hole 115 penetrates the valve block 11 in a direction from the first joint surface 111 to the second joint surface 112. The hydraulic pump device 1 further comprises a coupling 15, the coupling 15 is arranged in the through hole 115; the pump module 12 is connected with the driving shaft 141 of the driving mechanism 14 through the coupling 15. In this way, the connection between the pump module 12 and the driving shaft 141 of the driving mechanism 14 is achieved.

[0078] Referring to FIG. 6, in some embodiments, the hydraulic pump device 1 further comprises a sealing member 16, the sealing member 16 is arranged between the driving shaft 141 and the side wall of the through hole 115. In this way, the sealing member 16 seals the gap between the driving shaft 141 and the side wall of the through hole 115, and isolates the low-pressure oil passage inside the valve block 11 from the driving mechanism 14.

[0079] In some embodiments, the sealing member 16 comprises but is not limited to a sealing ring.

[0080] In some embodiments, the driving mechanism 14 comprises but is not limited to a motor.

[0081] In some embodiments, the driving mechanism 14 is detachably connected to the second joint surface 112.

[0082] In some embodiments, the pump module 12 further comprises a pump shaft 123, the pump shaft 123 is connected to the other end of the coupling 15. In this way, the driving shaft 141 of the driving mechanism 14 can drive the pump shaft 123 to rotate through the coupling 15. The driving shaft 141 can drive the driving gear to rotate by connecting the pump shaft 123 to the driving gear.

[0083] The working mode of the hydraulic pump device 1 of some embodiments of the present application is that the working fluid flowing into the liquid inlet 111A enters the liquid inlet 111A after passing through the filter assembly 13, and the filter assembly 13 isolates impurities outside the hydraulic pump device 1. Then, the working fluid flows from the liquid inlet 111A to the liquid storage tank 111C through the flow channel 111D, and the pump module 12 sucks the low-pressure working fluid in the liquid storage tank 111C and then discharges the high-pressure working fluid.

[0084] According to the second aspect of the present application, referring to FIG. 7 and FIG. 8, the present application provides a suspension power device 2, which comprises the hydraulic pump device 1 of any of the above embodiments. In this way, the filter assembly 13 filters the working fluid flowing into at least one liquid inlet 111A, and the filter assembly 13 isolates the impurities in the working fluid outside the hydraulic pump device 1, thereby reducing the risk of clogging of the hydraulic pump device 1 of the suspension power device 2.

[0085] Referring to FIGS. 7 and 8, in some embodiments, the suspension power device 2 further comprises a storage tank 21 for storing working fluid, the storage tank 21 is internally provided with a cavity 21A, the storage tank 21 is provided with a mounting port, the pump module 12 is arranged in the cavity 21A, the valve block 11 is mounted at the mounting port, the first joint surface 111 is arranged adjacent to the cavity 21A, and the valve block 11 is located outside the storage tank 21. In this way, the pump module 12 can be immersed in the working fluid inside the storage tank 21, the working fluid flows from the inside of the storage tank 21 to the filter assembly 13 on the valve block 11, and then flows into the liquid inlet 111A after being filtered, thereby entering the inside of the hydraulic pump device 1. Moreover, since the filter screen assembly is vertically arranged, impurities that cannot pass through the filter screen assembly cannot fall to the bottom of the storage tank 21 due to gravity or impact force caused by the working fluid in the storage tank 21, and cannot accumulate on the filter assembly 13, thereby achieving self-cleaning of the filter screen assembly.

[0086] Referring to FIGS. 2 to 4, in some embodiments, the valve block 11 is further provided with an annular groove 114 at one end, the annular groove 114 is arranged around the first joint surface 111, and an annular sealing member (not shown in the figure) is arranged between the flange at the mounting port and the annular groove 114. In this way, the storage tank 21 and the valve block 11 are sealingly connected.

[0087] Referring to FIG. 9, according to a third aspect of the present application, the present application provides a suspension assembly 3, which comprises the above-mentioned suspension power device 2 and a suspension device 31. The suspension device 31 is connected between a vehicle body (not shown in the figure) and a vehicle wheel (not shown in the figure). The suspension power device 2 is used to deliver or recover working fluid for the suspension device 31.

[0088] In some embodiments, referring to FIG. 9, the suspension assembly 3 further comprises an oil circuit 32, and the suspension power device 2 and the suspension device 31 are connected through the oil circuit 32.

[0089] The suspension device 31 has a lifting mode and a height-lowering mode, thereby the height of the vehicle body can be adjusted according to road conditions, etc., and the stability of the vehicle in driving is improved.

[0090] When the suspension device 31 is in the lifting mode, the working fluid in the liquid storage shell 21 enters the hydraulic pump device 1 after passing through the filter assembly 13, and is discharged into the oil circuit 32 by the pump module 12. The working fluid entering the oil circuit 32 flows into the suspension device 31, so that the piston in the suspension device 31 moves upward, the piston rod connected with the piston moves upward, and the piston rod lifts the vehicle body. Among them, the filter assembly 13 in the hydraulic pump device 1 serves as the first filtering device of the suspension assembly 3, which can reduce the risk of blockage of the hydraulic pump device 1, and can also reduce the risk of impurities entering other system components of the suspension assembly 3 and causing blockage, improve the problem that blockage affects the lifting function of the suspension device 31, and prolong the service life of the system components in the suspension assembly 3.

[0091] In the height reduction mode, the working fluid can flow from the suspension device 31 to the liquid storage shell 21 through the oil circuit 32, the piston of the suspension device 31 moves downward, the downward movement of the piston drives the downward movement of the piston rod, so as to drive the downward movement of the vehicle body, and achieve the purpose of reducing the height of the vehicle body.

[0092] When the suspension assembly 3 is not working, the impurities on the vertically installed filter assembly 13 fall off due to gravity or impact force generated by the working fluid during the movement of the vehicle 4, realizing the automatic cleaning of the filter assembly 13, and effectively preventing the problem of blockage of the filter assembly 13 caused by long-term deposition of impurities.

[0093] Referring to FIG. 10, according to the fourth aspect of the present application, the present application provides a vehicle 4, comprising the above-mentioned suspension power device 2, or the above-mentioned suspension assembly 3.

[0094] The above embodiments mainly describe the differences between the various embodiments. The different optimization features between the various embodiments can be combined to form a more optimal embodiment as long as they are not contradictory. Considering the brevity of the text, further description is omitted here.

[0095] Although some specific embodiments of the present application have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, and are not intended to limit the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A hydraulic pump device (1), comprising: a pump module (12); a valve block (11) connected with the pump module (12), the valve block (11) being provided with liquid inlets (111A) for working fluid to flow into the pump module (12); and a filter assembly (13) arranged at the liquid inlets (111A) for filtering the working fluid flowing to the liquid inlets (111A).

2. The hydraulic pump arrangement (1) according to claim 1, wherein The valve block (11) has a first joint surface (111), the pump module (12) is arranged on the first joint surface (111), and the liquid inlets (111A) are arranged on the first joint surface (111). The filter assembly (13) comprises a planar filter (131) located between the first joint surface (111) and the pump module (12) and shielding the liquid inlets (111A).

3. The hydraulic pump arrangement (1) according to claim 2, wherein The first joint surface (111) is further provided with a mounting groove (111B2) in communication with the liquid inlets (111A), and the planar filter (131) is mounted at the bottom of the mounting groove (111B2).

4. The hydraulic pump arrangement (1) according to claim 2, wherein The first joint surface (111) further comprises a liquid storage groove (111C), a joint surface top point (111E), and a joint surface bottom point (111F); the joint surface top point (111E) is located at the top of the first joint surface (111), and the joint surface bottom point (111F) is located at the bottom of the first joint surface (111). The liquid storage groove (111C) is in communication with the liquid inlets (111A) and is located between the joint surface top point (111E) and the joint surface bottom point (111F), and the vertical distance from the liquid storage groove (111C) to the joint surface top point (111E) is less than the distance from the liquid storage groove (111C) to the joint surface bottom point (111F).

5. The hydraulic pump arrangement (1) according to claim 4, wherein The number of the liquid inlets (111A) is multiple, and at least two of the liquid inlets (111A) are located on both sides of the liquid storage groove (111C), respectively.

6. The hydraulic pump arrangement (1) according to claim 5, wherein The vertical distances from the two liquid inlets (111A) to the joint surface bottom point (111F) are different.

7. The hydraulic pump arrangement (1) according to claim 6, wherein The two planar filters (131) shield the two liquid inlets (111A), respectively.

8. The hydraulic pump arrangement (1) according to claim 2, wherein The planar filter (131) is sealingly mounted on the first joint surface (111).

9. The hydraulic pump arrangement (1) according to claim 8, wherein The pump module (12) is sealingly mounted on the planar filter (131).

10. The hydraulic pump arrangement (1) according to any one of claims 1-9, wherein The pump module (12) is provided with a pump inlet (121) and a pump filter device (122) arranged at the pump inlet (121), and the pump filter device (122) is used for filtering the working fluid flowing into the pump inlet (121).

11. The hydraulic pump arrangement (1) according to claim 10, wherein The first joint surface (111) is further provided with a flow channel (111D) arranged between the two liquid inlets (111A) and in communication with the two liquid inlets (111A) and the liquid storage groove (111C).

12. The hydraulic pump arrangement (1) according to claim 11, wherein The flow channel (111D) comprises a main flow channel (111D1) and a branch flow channel (111D2), the main flow channel (111D1) is arranged between and communicated with the two liquid inlets (111A), and the branch flow channel (111D2) is arranged between and communicated with the main flow channel (111D1) and the liquid storage tank (111C).

13. The hydraulic pump arrangement (1) according to claim 12, wherein The extension direction of the main flow channel (111D1) intersects with the extension direction of the two liquid inlets (111A).

14. The hydraulic pump arrangement (1) according to any one of claims 2-9, wherein The valve block (11) further comprises a second joint surface (112) arranged opposite to the first joint surface (111), and the hydraulic pump device (1) further comprises a driving mechanism (14) for driving the pump module (12), the driving mechanism (14) being arranged on the second joint surface (112).

15. The hydraulic pump arrangement (1) according to claim 14, wherein The valve block (11) further comprises a through hole (115) penetrating the valve block (11) in the direction in which the first joint surface (111) points to the second joint surface (112), and the hydraulic pump device (1) further comprises a shaft coupling (15) arranged in the through hole (115), the pump module (12) being connected with a driving shaft (141) of the driving mechanism (14) through the shaft coupling (15).

16. The hydraulic pump arrangement (1) according to claim 15, wherein The hydraulic pump device (1) further comprises a sealing member (16) arranged between the driving shaft (141) and the side wall of the through hole (115).

17. A suspension power device (2) comprising the hydraulic pump device (1) according to any one of claims 1 to 16.

18. The suspension power device (2) according to claim 17, wherein Further comprising a liquid storage housing (21) for storing the working fluid, the liquid storage housing (21) being internally provided with a cavity (21A), the pump module (12) being arranged in the cavity (21A), and the valve block (11) being mounted at the mounting opening, the first joint surface (111) being arranged adjacent to the cavity (21A), and the valve block (11) being located outside the liquid storage housing (21).

19. A suspension assembly (3) comprising the suspension power device (2) according to claim 17 or 18, and a suspension device (31) connected between a vehicle body and a vehicle wheel, the suspension power device (2) being used for supplying power for the suspension device (31) to deliver or recover the working fluid.

20. A vehicle (4) comprising the suspension power device (2) according to claim 17 or 18, or the suspension assembly (3) according to claim 19.

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