Electric hydraulic pump assembly, hydraulic suspension system and vehicle

Abstract

The invention discloses an electric hydraulic pump assembly, a hydraulic suspension system and a vehicle, the electric hydraulic pump assembly comprises a pump body, an oil way pipeline and a pressure sensor, the oil way pipeline is connected with the pump body, and the oil way pipeline is used for being connected with a load; the pressure sensor is connected with an oil-way pipeline. In other words, the pressure sensor is externally arranged relative to the pump body. Therefore, on one hand, the structure of the pump body can be simplified, the utilization rate of the internal space of the pump body can be improved, the pressure sensor can be conveniently assembled on the pump body, and the electric hydraulic pump assembly has the advantages that the manufacturing cost is reduced; conditions are created for the pumping and drainage pressure of oil liquid when the pump body is lifted in the follow-up process; on the other hand, the accuracy of data obtained when the pressure sensor detects the oil pressure value can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle shock absorption, and in particular to an electric hydraulic pump assembly, a hydraulic suspension system and a vehicle. Background Art

[0002] As a device that actively provides hydraulic energy to loads such as shock absorbers and hydraulic motors, the electric hydraulic pump is a key component of the active hydraulic suspension system. At present, the existing electric hydraulic pumps usually have a pressure sensor installed inside the hydraulic pump to detect the pressure of the oil in the electric hydraulic pump. However, since the pressure sensor is installed inside the hydraulic pump, it is necessary to reserve assembly space for the pressure sensor inside the hydraulic pump, which increases the overall volume and production cost of the electric hydraulic pump. Summary of the invention

[0003] Based on this, it is necessary to provide an electric hydraulic pump assembly, a hydraulic suspension system and a vehicle that are convenient for assembling a pressure sensor and can reduce the manufacturing cost.

[0004] An electric hydraulic pump assembly is used to provide hydraulic pressure for a load, and the electric hydraulic pump assembly includes:

[0005] Pump body;

[0006] An oil pipeline, the oil pipeline is connected to the pump body, and the oil pipeline is used to connect to the load;

[0007] A pressure sensor is connected to the oil pipeline.

[0008] It can be understood that by connecting the pressure sensor to the oil pipeline on the pump body for connecting to the load, the pressure sensor can be placed outside the pump body, so that the pump body does not need to reserve assembly space for the pressure sensor. On the one hand, this can simplify the structure of the pump body, improve the utilization rate of the internal space of the pump body, and facilitate the assembly of the pressure sensor on the pump body, thereby reducing the manufacturing cost of the electric hydraulic pump assembly and creating conditions for subsequently increasing the pumping pressure of the oil when the pump body is working; on the other hand, it can also improve the accuracy of the data when the pressure sensor detects the oil pressure value.

[0009] In one embodiment, the pump body includes an oil inlet and an oil outlet;

[0010] The oil pipeline comprises a first oil pipeline and a second oil pipeline, one end of the first oil pipeline is connected to the oil inlet, one end of the second oil pipeline is connected to the oil outlet, and the other end of the first oil pipeline and the other end of the second oil pipeline are respectively used to connect to the load;

[0011] The pressure sensor is connected to the first oil pipeline and / or the second oil pipeline.

[0012] In one embodiment, the pressure sensor includes a first pressure sensor and a second pressure sensor, the first pressure sensor is connected to the first oil pipeline, and the second pressure sensor is connected to the second oil pipeline.

[0013] It can be understood that the external first pressure sensor and the second pressure sensor are used to respectively detect the pressure of the oil when the oil enters and exits the pump body, which can meet the use requirements of pressure detection when the electric hydraulic pump assembly provides hydraulic pressure for the load.

[0014] In one of the embodiments, the electric hydraulic pump assembly further includes an adapter, and the adapter is respectively connected to the oil pipeline and the pressure sensor.

[0015] It can be understood that the pressure sensor is connected to the oil pipeline via an adapter, so that an assembly connection between the pressure sensor and the oil pipeline can be achieved.

[0016] In one embodiment, the oil pipeline includes a first oil pipeline and a second oil pipeline, and the first oil pipeline and the second oil pipeline are respectively connected to the pump body;

[0017] The adapter includes a first passage and a second passage, the first passage is in communication with the first oil pipeline, and the second passage is in communication with the second oil pipeline.

[0018] It can be understood that two independent first passages and second passages are respectively connected to the first oil pipeline and the second oil pipeline on the oil pipeline, which creates conditions for the subsequent two pressure sensors to be connected to the oil pipeline respectively.

[0019] In one embodiment, the pump body includes an oil inlet and an oil outlet;

[0020] Two ends of the first passage are respectively connected to the oil inlet and the first oil pipeline;

[0021] Two ends of the second passage are connected to the oil outlet and the second oil pipeline respectively.

[0022] It can be understood that, through the above-mentioned structural setting, an embodiment of assembling the adapter on the pump body is specifically realized.

[0023] In one embodiment, the pump body includes an oil inlet and an oil outlet, one end of the first oil pipeline is connected to the oil inlet, and one end of the second oil pipeline is connected to the oil outlet;

[0024] Wherein, the first oil pipeline comprises a first pipe section and a second pipe section, two ends of the first pipe section are respectively connected to one end of the first passage and the oil inlet, one end of the second pipe section is connected to the other end of the first passage, and the other end of the second pipe section is used to connect to a load;

[0025] And / or, the second oil pipeline includes a third pipe segment and a fourth pipe segment, two ends of the third pipe segment are respectively connected to one end of the second passage and the oil outlet, one end of the fourth pipe segment is connected to the other end of the second passage, and the other end of the fourth pipe segment is used to connect the load.

[0026] It can be understood that, through the above-mentioned structural setting, an embodiment of assembling the adapter on the oil pipeline is specifically realized.

[0027] In one embodiment, one end of the first passage is connected to the first oil pipeline, and the other end of the first passage is used to connect to the load;

[0028] One end of the second passage is connected to the second oil pipeline, and the other end of the second passage is used to be connected to the load.

[0029] It can be understood that, through the above-mentioned structural setting, an embodiment of assembling the adapter on the load is specifically realized.

[0030] In one of the embodiments, the pressure sensor includes a first pressure sensor and a second pressure sensor;

[0031] The first pressure sensor is connected to the first passage, and the second pressure sensor is connected to the second passage.

[0032] In one embodiment, the adapter includes a first adapter portion, the first passage is disposed on the first adapter portion, and the first pressure sensor is mounted on the first adapter portion;

[0033] And / or, the adapter includes a second adapter portion, the second passage is provided on the second adapter portion, and the second pressure sensor is installed on the second adapter portion.

[0034] The present application also claims protection for a hydraulic suspension system, the hydraulic suspension system comprising:

[0035] Shock absorbers;

[0036] The oil pipeline of the electric hydraulic pump assembly described above is connected to the shock absorber.

[0037] The present application also claims protection for a vehicle, the vehicle comprising:

[0038] Shock absorbers;

[0039] The oil pipeline of the electric hydraulic pump assembly described above is connected to the shock absorber.

[0040] Due to the application of the above technical solution, the present application has the following advantages compared with the related art:

[0041] The electric hydraulic pump assembly, hydraulic suspension system and vehicle for which protection is sought in the present application connect a pressure sensor to an oil pipeline on a pump body for connecting to a load, thereby enabling the pressure sensor to be externalized relative to the pump body, so that the pump body does not need to reserve assembly space for the pressure sensor. This can, on the one hand, simplify the structure of the pump body, improve the utilization rate of the internal space of the pump body, and facilitate the assembly of the pressure sensor on the pump body, thereby reducing the manufacturing cost of the electric hydraulic pump assembly and creating conditions for subsequently increasing the pumping pressure of the oil when the pump body is working; on the other hand, it can also improve the accuracy of the data when the pressure sensor detects the oil pressure value. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0043] Figure 1 A schematic diagram of the partial structure of an electric hydraulic pump assembly provided in one embodiment of the present application.

[0044] Figure 2 for Figure 1 Exploded diagram of .

[0045] Figure 3 Schematic diagram of the structure of the adapter in this application.

[0046] Figure 4 This is a schematic diagram of the structure of the first pipe joint / second pipe joint in this application.

[0047] Figure 5 This is a schematic diagram of the structure of a hydraulic suspension system provided in one embodiment of the present application.

[0048] Figure 6 for Figure 5 Schematic diagram of the structure from another perspective.

[0049] Figure numerals: 100, electric hydraulic pump assembly; 10, pump body; 11, oil inlet; 12, oil outlet; 20, oil pipeline; 21, first oil pipeline; 22, second oil pipeline; 30, pressure sensor; 31, first pressure sensor; 32, second pressure sensor; 40, adapter; 40a, first adapter; 40b, second adapter; 41, first passage; 411, first pipe joint; 42, second passage; 421, second pipe joint; 200, shock absorber; 300, accumulator; 1000, hydraulic suspension system. DETAILED DESCRIPTION

[0050] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0051] It should be noted that when a component is referred to as being "fixed to" or "provided on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "upper", "lower" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0052] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0053] In the present application, unless otherwise clearly specified and limited, a first feature being “on” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium.

[0054] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0055] like Figure 5 , Figure 6 As shown, the electric hydraulic pump assembly 100 for which protection is requested in this application is applied to a hydraulic suspension system 1000 of a vehicle, and the electric hydraulic pump assembly 100 is used to provide hydraulic pressure for a load. In this application, the load is illustrated by a shock absorber 200 as an example, and the structure and working principle of the shock absorber 200 can adopt the conventional methods of the relevant technology, which will not be elaborated here.

[0056] like Figures 1 to 6 As shown, the electric hydraulic pump assembly 100 provided in the present application includes a pump body 10, an oil pipeline 20 and a pressure sensor 30, wherein the oil pipeline 20 is connected to the pump body 10, and the oil pipeline 20 is used to connect the shock absorber 200; the pressure sensor 30 is connected to the oil pipeline 20. That is to say, the present application connects the pressure sensor 30 to the oil pipeline 20 on the pump body 10 for connecting the shock absorber 200, so that the pressure sensor 30 is externally arranged relative to the pump body 10. As can be seen from the above, the electric hydraulic pump assembly 100 of the present application places the pressure sensor 30 externally, so that the pump body 10 does not need to reserve assembly space for the pressure sensor 30, which can simplify the structure of the pump body 10, improve the utilization rate of the internal space of the pump body 10, and facilitate the assembly of the pressure sensor 30 on the pump body 10, thereby reducing the manufacturing cost of the electric hydraulic pump assembly 100, and creating conditions for the subsequent improvement of the pumping pressure of the oil when the pump body 10 is working; on the other hand, it can also improve the accuracy of the data when the pressure sensor 30 detects the oil pressure value.

[0057] It should be noted that when the electric hydraulic pump assembly 100 is working, the pump body 10 can provide oil to the shock absorber 200 through the oil pipeline 20, and realize the hydraulic drive of the shock absorber 200. The present application connects the pressure sensor 30 to the oil pipeline 20, so that the pressure sensor 30 can directly detect the pressure of the oil in the oil pipeline 20. Compared with setting the pressure sensor in the pump body 10, the influence of the pressure loss of the oil in the oil pipeline 20 can be avoided, thereby improving the accuracy of the oil pressure value data detected by the pressure sensor 30 of the present application.

[0058] In this embodiment, the pump body 10 is illustrated by an electric hydraulic pump, which includes a motor and a hydraulic pump connected to each other. The motor is used to drive the hydraulic pump to work. The pressure sensor is connected to the oil circuit of the hydraulic pump, and the pressure sensor is used to detect the pressure of the oil in the hydraulic pump.

[0059] like Figure 2As shown, in one embodiment, the pump body 10 includes an oil inlet 11 and an oil outlet 12; the oil pipeline 20 includes a first oil pipeline 21 and a second oil pipeline 22, one end of the first oil pipeline 21 is connected to the oil inlet 11, one end of the second oil pipeline 22 is connected to the oil outlet 12, and the other end of the first oil pipeline 21 and the other end of the second oil pipeline 22 are respectively used to connect to the shock absorber 200. When the electric hydraulic pump assembly 100 of the present application is working, the oil outlet 12 on the pump body 10 can be discharged to the shock absorber 200 through the second oil pipeline 22, and then the shock absorber 200 returns the oil to the oil inlet 11 through the first oil pipeline 21, and realizes the circulation of the oil between the pump body 10 and the shock absorber 200, so as to realize the hydraulic drive of the shock absorber 200 by the pump body 10.

[0060] like Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, in this embodiment, the pressure sensor 30 is connected to the first oil pipeline 21 and / or the second oil pipeline 22. The pressure sensor 30 includes a first pressure sensor 31 and a second pressure sensor 32, wherein the first pressure sensor 31 is connected to the first oil pipeline 21, and the second pressure sensor 32 is connected to the second oil pipeline 22. The electric hydraulic pump assembly 100 of this embodiment can respectively detect the pressure of the oil when the pump body 10 enters and exits the oil using the external first pressure sensor 31 and the second pressure sensor 32, so as to meet the use requirements of the electric hydraulic pump assembly 100 for pressure detection when providing hydraulic pressure for the shock absorber 200. It can be understood that in other embodiments, the first pressure sensor 31 can be connected only to the first oil pipeline 21, and the second pressure sensor can be integrated into the pump body 10; or, the second pressure sensor 32 can be connected only to the second oil pipeline 22, and the first pressure sensor can be integrated into the pump body 10, which will not be elaborated here.

[0061] like Figures 1 to 3 As shown, in one embodiment, the electric hydraulic pump assembly 100 further includes an adapter 40, which is respectively connected to the oil pipeline 20 and the pressure sensor 30. The pressure sensor 30 of this embodiment is connected to the oil pipeline 20 through the adapter 40, so that the assembly connection between the pressure sensor 30 and the oil pipeline 20 can be achieved.

[0062] like Figure 2As shown, in this embodiment, the adapter 40 includes a first passage 41 and a second passage 42, the first passage 41 is connected to the first oil pipeline 21, and the second passage 42 is connected to the second oil pipeline 22. That is to say, the adapter 40 of this embodiment can use two independent first passages 41 and second passages 42 to communicate with the first oil pipeline 21 and the second oil pipeline 22 on the oil pipeline 20, respectively, so as to create conditions for the subsequent two pressure sensors 30 to be connected to the oil pipeline 20 respectively. The first pressure sensor 31 is connected to the first passage 41, and the second pressure sensor 32 is connected to the second passage 42. Specifically, the first pressure sensor 31 and the second pressure sensor 32 can be assembled to the corresponding first passage 41 and the second passage 42 on the adapter 40 in a tight fit manner.

[0063] like Figure 1 , Figure 2 and Figure 4 As shown, in this embodiment, the adapter 40 is connected to the first passage 41 with a first pipe joint 411, and the first oil pipeline 21 can be connected and communicated with the first passage 41 through the first pipe joint 411, which can facilitate the assembly connection between the first oil pipeline 21 and the first passage 41 on the adapter 40. The assembly direction of the first oil pipeline 21 and the first pipe joint 411 when assembled is opposite to the assembly direction of the first pressure sensor 31 when assembled on the first passage 41 on the adapter 40, which can avoid that the first pressure sensor 31 and the first oil pipeline 21 have a sufficiently large assembly space when assembled on the first passage 41 of the adapter 40, and has the effect of facilitating the assembly of the first pressure sensor 31 and the first oil pipeline 21 on the first passage 41 of the adapter 40.

[0064] like Figure 1 , Figure 2 and Figure 4 As shown, in this embodiment, the adapter 40 is connected to the second passage 42 with a second pipe joint 421, and the second oil pipeline 22 can be connected and communicated with the second passage 42 through the second pipe joint 421, which can facilitate the assembly connection between the second oil pipeline 22 and the second passage 42 on the adapter 40. The assembly direction of the second oil pipeline 22 and the second pipe joint 421 when assembled is opposite to the assembly direction of the second pressure sensor 32 when assembled on the second passage 42 on the adapter 40, which can avoid that the second pressure sensor 32 and the second oil pipeline 22 have a sufficiently large assembly space when assembled on the second passage 42 of the adapter 40, and has the effect of facilitating the assembly of the second pressure sensor 32 and the second oil pipeline 22 on the second passage 42 of the adapter 40.

[0065] In this embodiment, the adapter 40 includes a first adapter portion 40a and a second adapter portion 40b, and the first adapter portion 40a and the second adapter portion 40b are connected to form an integrated structure. Among them, the first passage 41 is provided in the first adapter portion 40a, and the first pressure sensor 31 is installed in the first adapter portion 40a; the second passage 42 is provided in the second adapter portion 40b, and the second pressure sensor 32 is installed in the second adapter portion 40b. It can be understood that in some other embodiments, the first adapter portion 40a and the second adapter portion 40b may not be connected, that is, the first adapter portion 40a and the second adapter portion 40b are separately provided.

[0066] It can be understood that in some embodiments, the adapter 40 may include only the first adapter part 40a or only the second adapter part 40b, and the first pressure sensor 31 and / or the second pressure sensor 32 are installed on the first adapter part 40a, or the first pressure sensor 31 and / or the second pressure sensor 32 are installed on the second adapter part 40b.

[0067] like Figure 1 , Figure 2 As shown, in this embodiment, the first pressure sensor 31 and the second pressure sensor 32 are arranged on the same side of the adapter 40 .

[0068] It should be noted that, in this embodiment, the number of adapters 40 is configured as one, that is, the first passage 41 and the second passage 42 of the adapter 40 are connected as one, so that the adapter 40 can be integrally injection molded using a plastic material, which can facilitate the production and preparation of the adapter 40. It can be understood that in other embodiments, the number of adapters 40 can also be configured as two independent entities, the first passage 41 is formed on one independent entity of the adapter 40, and the second passage 42 is formed on the other independent entity of the adapter 40, which will not be elaborated here.

[0069] It should be noted that, since the first pressure sensor 31 and the second pressure sensor 32 of the present embodiment are connected to the adapter 40, it can be understood that the description of the specific position of the adapter 40 of the present application when assembled on the oil pipeline 20 can realize the description of the different installation positions of the first pressure sensor 31 and the second pressure sensor 32 when they are externally placed relative to the pump body 10.

[0070] like Figure 1 , Figure 2 As shown, in one embodiment, the two ends of the first passage 41 are respectively connected to the oil inlet 11 and the first oil pipeline 21; the two ends of the second passage 42 are respectively connected to the oil outlet 12 and the second oil pipeline 22. That is, the adapter 40 of this embodiment is assembled to the pump body 10, specifically assembled and connected with the oil inlet 11 and the oil outlet 12 of the pump body 10.

[0071] In one embodiment, one end of the first oil pipeline 21 is connected to the oil inlet 11, and one end of the second oil pipeline 22 is connected to the oil outlet 12; wherein the first oil pipeline 21 includes a first pipe section (not shown) and a second pipe section (not shown), the two ends of the first pipe section are respectively connected to one end of the first passage 41 and the oil inlet 11, one end of the second pipe section is connected to the other end of the first passage 41, and the other end of the second pipe section is used to connect to the shock absorber 200. That is, the first passage 41 on the adapter 40 of this embodiment is set on the path of the first oil pipeline 21.

[0072] And / or, the second oil pipeline 22 includes a third pipe section (not shown) and a fourth pipe section (not shown), two ends of the third pipe section are respectively connected to one end of the second passage 42 and the oil outlet 12, one end of the fourth pipe section is connected to the other end of the second passage 42, and the other end of the fourth pipe section is used to connect to the shock absorber 200. That is, the second passage 42 on the adapter 40 of this embodiment is set on the path of the second oil pipeline 22.

[0073] In one embodiment, one end of the first passage 41 is connected to the first oil pipeline 21, and the other end of the first passage 41 is used to connect to the shock absorber 200; one end of the second passage 42 is connected to the second oil pipeline 22, and the other end of the second passage 42 is used to connect to the shock absorber 200. That is, the adapter 40 of this embodiment is assembled to the shock absorber 200.

[0074] like Figure 5 , Figure 6 As shown, the present application also provides a hydraulic suspension system 1000, including a shock absorber 200, the electric hydraulic pump assembly 100 described above, and the oil pipeline 20 of the electric hydraulic pump assembly 100 is connected to the shock absorber 200. The first oil pipeline 21 and the second oil pipeline 22 of the oil pipeline 20 are respectively connected to an accumulator 300, and the accumulator 300 is used to transfer the oil in the first oil pipeline 21 and the second oil pipeline 22 to meet the use requirements of the electric hydraulic pump assembly 100 in the hydraulic suspension system 1000. It should be noted that the specific structure of the above-mentioned accumulator 300 can adopt the conventional method of the relevant technology, which will not be elaborated here.

[0075] In one embodiment, the hydraulic suspension system 1000 further includes a control module (not shown), which is electrically connected to a control board (not shown) in the pump body 10 and the pressure sensor 30, respectively, so that the pressure data detected by the pressure sensor 30 can be directly sent to the control module, and then the control module is used to control the operation of the pump body 10. Since the pressure sensor 30 directly sends the detected pressure data to the control module, compared with the existing pressure sensor electrically connected to the control board in the pump body 10, the electrical module on the control board in the pump body 10 can be simplified, which has the effect of reducing the manufacturing cost of the pump body 10.

[0076] like Figure 5 , Figure 6 As shown, the present application also provides a vehicle, including a shock absorber 200 and the electric hydraulic pump assembly 100 described above, wherein the oil pipeline 20 of the electric hydraulic pump assembly 100 is connected to the shock absorber 200 .

[0077] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0078] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.

Claims

1. An electric hydraulic pump assembly for providing hydraulic pressure to a load, characterized in that: The electric hydraulic pump assembly (100) comprises: Pump body (10); An oil pipeline (20), the oil pipeline (20) being connected to the pump body (10), and the oil pipeline (20) being used to connect to a load; A pressure sensor (30), wherein the pressure sensor (30) is connected to the oil pipeline (20).

2. The electric hydraulic pump assembly according to claim 1, characterized in that: The pump body (10) comprises an oil inlet (11) and an oil outlet (12); The oil pipeline (20) comprises a first oil pipeline (21) and a second oil pipeline (22), one end of the first oil pipeline (21) is connected to the oil inlet (11), one end of the second oil pipeline (22) is connected to the oil outlet (12), and the other end of the first oil pipeline (21) and the other end of the second oil pipeline (22) are respectively used to be connected to a load; The pressure sensor (30) is connected to the first oil pipeline (21) and / or the second oil pipeline (22).

3. The electric hydraulic pump assembly according to claim 2, characterized in that: The pressure sensor (30) comprises a first pressure sensor (31) and a second pressure sensor (32), wherein the first pressure sensor (31) is connected to the first oil pipeline (21), and the second pressure sensor (32) is connected to the second oil pipeline (22).

4. The electric hydraulic pump assembly according to claim 1, characterized in that: The electric hydraulic pump assembly (100) further comprises an adapter (40), wherein the adapter (40) is respectively connected to the oil pipeline (20) and the pressure sensor (30).

5. The electric hydraulic pump assembly according to claim 4, characterized in that: The oil pipeline (20) comprises a first oil pipeline (21) and a second oil pipeline (22), and the first oil pipeline (21) and the second oil pipeline (22) are respectively connected to the pump body (10); The adapter (40) comprises a first passage (41) and a second passage (42), wherein the first passage (41) is in communication with the first oil pipeline (21), and the second passage (42) is in communication with the second oil pipeline (22).

6. The electric hydraulic pump assembly according to claim 5, characterized in that: The pump body (10) comprises an oil inlet (11) and an oil outlet (12); Two ends of the first passage (41) are respectively connected to the oil inlet (11) and the first oil pipeline (21); And / or, two ends of the second passage (42) are respectively connected to the oil outlet (12) and the second oil pipeline (22).

7. The electric hydraulic pump assembly according to claim 5, characterized in that: The pump body (10) comprises an oil inlet (11) and an oil outlet (12); The first oil pipeline (21) comprises a first pipe section and a second pipe section, two ends of the first pipe section are respectively connected to one end of the first passage (41) and the oil inlet (11), one end of the second pipe section is connected to the other end of the first passage (41), and the other end of the second pipe section is used to connect to a load; And / or, the second oil pipeline (22) comprises a third pipe section and a fourth pipe section, two ends of the third pipe section are respectively connected to one end of the second passage (42) and the oil outlet (12), one end of the fourth pipe section is connected to the other end of the second passage, and the other end of the fourth pipe section is used for connecting to a load.

8. The electric hydraulic pump assembly according to claim 5, characterized in that: One end of the first passage (41) is connected to the first oil pipeline (21), and the other end of the first passage (41) is used to be connected to a load; And / or, one end of the second passage (42) is connected to the second oil pipeline (22), and the other end of the second passage (42) is used to be connected to a load.

9. The electric hydraulic pump assembly according to any one of claims 5 to 8, characterized in that: The pressure sensor (30) comprises a first pressure sensor (31) and a second pressure sensor (32); The first pressure sensor (31) is connected to the first passage (41), and the second pressure sensor (32) is connected to the second passage (42).

10. The electric hydraulic pump assembly according to claim 9, characterized in that: The adapter (40) comprises a first adapter portion (40a), the first passage (41) is arranged on the first adapter portion (40a), and the first pressure sensor (31) is installed on the first adapter portion (40a); And / or, the adapter (40) includes a second adapter portion (40b), the second passage (42) is disposed on the second adapter portion (40b), and the second pressure sensor (32) is mounted on the second adapter portion (40b).

11. A hydraulic suspension system, characterized in that: The hydraulic suspension system (1000) comprises: Shock absorber (200); According to any one of claims 1 to 10, the oil pipeline (20) of the electric hydraulic pump assembly (100) is connected to the shock absorber (200).

12. A vehicle, characterized in that: Vehicle includes: Shock absorber(200) ； According to any one of claims 1 to 10, the oil pipeline (20) of the electric hydraulic pump assembly (100) is connected to the shock absorber (200).

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