Hydraulic suspension system and vehicle

Abstract

This invention discloses a hydraulic suspension system and vehicle, relating to the field of vehicle technology, and aims to solve the problem of inconvenient installation and maintenance of hydraulic suspension systems. The hydraulic suspension system includes a single-axle integrated module suitable for connection to two shock absorbers located on the front or rear axle of a vehicle. The single-axle integrated module includes a pressure-building module and two hydraulic adjustment modules, the pressure-building module being detachably connected to the two hydraulic adjustment modules.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to a hydraulic suspension system and vehicle. Background Technology

[0002] The suspension system is an important component of the vehicle chassis, used to transmit forces and torques between the vehicle body and the axle. Vibrations from the road surface that are fed back to the axle can be attenuated by the suspension system before being transmitted to the vehicle body, enabling the vehicle to drive smoothly and improving the driver's driving experience.

[0003] In related technologies, to balance vehicle comfort and handling, suspension systems use hydraulic drives to adjust the stiffness and damping of shock absorbers. For example, when the vehicle is traveling at high speed, a higher stiffness or damping can be set to improve the driver's control and prevent body roll; when the vehicle is traveling at low speed, a lower stiffness or damping can be set to better cushion road bumps and provide better vehicle comfort.

[0004] However, due to the large number of components and low integration of hydraulic suspension systems, they are not convenient for initial assembly and subsequent maintenance. Summary of the Invention

[0005] The purpose of this application is to provide a hydraulic suspension system and vehicle, which aims to solve the problem of inconvenient installation and maintenance of hydraulic suspension systems.

[0006] In a first aspect, this application provides a hydraulic suspension system including a single-axle integrated module adapted to connect to two shock absorbers located on the front or rear axle of a vehicle. The single-axle integrated module includes a pressure-building module and two hydraulic adjustment modules, which are detachably connected.

[0007] The pressure-building module can supply fluid to two hydraulic adjustment modules, which are respectively connected to two shock absorbers to supply fluid to them. Because the pressure-building module and the hydraulic adjustment modules are detachably connected, they can be assembled, inspected, or replaced individually. This improves the integration of the hydraulic suspension system, reduces maintenance difficulty, and saves maintenance costs.

[0008] Optionally, the two hydraulic adjustment modules are respectively located on opposite sides of the pressure building module, and the two hydraulic adjustment modules are symmetrically arranged about the pressure building module.

[0009] Optionally, the pressure-building module includes a pressure-building module base, and the hydraulic adjustment module includes a hydraulic adjustment base. The pressure-building module base is detachably connected to two hydraulic adjustment bases to supply fluid to the two shock absorbers via the two hydraulic adjustment bases.

[0010] Optionally, the two hydraulic adjustment bases are located on opposite sides of the pressure building module base, and the two hydraulic adjustment bases are symmetrically arranged about the pressure building module base.

[0011] Optionally, the hydraulic adjustment module includes a stiffness adjustment component and a damping adjustment component. The hydraulic adjustment base includes a first integration port and a second integration port. The first integration port is adapted to integrate and connect the hydraulic adjustment base with the stiffness adjustment component, and the second integration port is adapted to integrate and connect the hydraulic adjustment base with the damping adjustment component. A first pipeline is provided within the hydraulic adjustment base, which is adapted to connect the stiffness adjustment component, the damping adjustment component, and the corresponding shock absorber.

[0012] Optionally, the hydraulic adjustment module includes a first control valve assembly, and the hydraulic adjustment base also includes a third integration port. The third integration port is adapted to integrate and connect the hydraulic adjustment base with the first control valve assembly. The first control valve assembly is adapted to control the on / off state of the stiffness adjustment assembly, the damping adjustment assembly, and the corresponding shock absorber.

[0013] Optionally, the first pipeline includes a main pipeline with opposing first and second ends. The first end is adapted to connect to the pressure-building module base, and the second end is adapted to connect to a corresponding vibration damper. The stiffness adjustment assembly includes a first accumulator, and a first integration port includes a first port connected to the main pipeline. The first port is adapted to integrate the hydraulic adjustment base with the first accumulator.

[0014] Optionally, the section of the main pipeline located between the first port and the second port is the first main pipeline section, the first control valve assembly includes a first control valve structure, and the third integration port includes a second port located in the first main pipeline section and / or located between the main pipeline and the first port, the second port being adapted to integrate the hydraulic regulating base with the first control valve structure.

[0015] Optionally, the stiffness adjustment assembly also includes a second accumulator, and the first integration port also includes a third port connected to the first main pipeline section, the third port being adapted to integrate the hydraulic adjustment base with the second accumulator.

[0016] Optionally, the section of the first main pipeline between the third port and the second port is a sub-section of the first main pipeline. The first control valve assembly also includes a second control valve structure. The third integration port includes a fourth port located in the first main pipeline sub-section and / or located between the main pipeline and the third port. The fourth port is adapted to integrate the hydraulic regulating base with the second control valve structure.

[0017] Optionally, the first control valve structure includes a first control valve and a second control valve. The number of second ports is two. One second port is located in the first main pipeline section and between the third port and the first port. The other second port is located between the main pipeline and the first port. The two second ports are used to integrate the hydraulic regulating base with the first control valve and to integrate the hydraulic regulating base with the second control valve, respectively.

[0018] Optionally, the stiffness adjustment assembly also includes a third accumulator, and the first integration port also includes a fifth port connected to the first main pipeline section, the fifth port being adapted to integrate the hydraulic adjustment base with the third accumulator.

[0019] Optionally, a first recess is provided on the hydraulic adjustment base at the position corresponding to each port in the third integrated port. The first recess is used to accommodate the control valve of the first control valve assembly.

[0020] Optionally, the second integration port includes a sixth port and a seventh port located on the main pipeline, the sixth port and the seventh port being adapted to integrate the hydraulic adjustment base with both ends of the damping adjustment assembly.

[0021] Optionally, the damping adjustment assembly includes a damping dual valve, with a sixth port adapted to connect to one end of the damping dual valve and a seventh port adapted to connect to the other end of the damping dual valve.

[0022] Optionally, a second recess is provided on the hydraulic adjustment base at the position corresponding to the second integration port, and the second recess is used to accommodate the damping adjustment component.

[0023] Optionally, the hydraulic adjustment base includes a first side and a second side connected to each other. The first side is connected to the pressure building module base, and the first port and the second integration port are located on the first side; the second port and the third port are located on the second side.

[0024] Optionally, the hydraulic adjustment base also includes a third side, which is connected to both the first and second sides, and the third integration port is located on the third side.

[0025] Optionally, the pressure-building module base includes a fourth integrated port, which is adapted to connect the hydraulic regulating base to the pressure-building module base. The pressure-building module base is also provided with a second pipeline, which is adapted to realize the supply or return of liquid to the two first pipelines.

[0026] Optionally, the hydraulic suspension system also includes a fluid supply system, which includes a fluid reservoir. The second pipeline includes a fluid supply line with opposing third and fourth ends. The third end is adapted to connect to the fluid reservoir, and the fourth end is adapted to connect to the two first pipelines.

[0027] Optionally, the pressure building module also includes a pressure building device, and the pressure building module base also includes a fifth integration port, which is located in the liquid supply pipeline and is suitable for integrating and connecting the pressure building module base and the pressure building device.

[0028] Optionally, the pressure building module base also includes a sixth integrated port, which is located in the liquid supply line and between the fourth end and the fifth integrated port. The sixth integrated port is suitable for integrating and connecting the pressure building module base with the return module.

[0029] Optionally, the sixth integrated port includes an inlet port, a return port, and a common port. The inlet port and the common port are connected to the liquid supply line. The second line also includes a return line, one end of which is connected to the return port, and the other end is adapted to be connected to the liquid storage device.

[0030] Optionally, the pressure-building module base also includes a seventh integrated port, which is connected to a portion of the liquid supply line between the common port and the fourth end. The seventh integrated port is suitable for integrating the pressure-building module base with the voltage accumulator.

[0031] Optionally, the pressure building module base is also provided with an installation cavity, which is located in part of the liquid supply pipeline between the fifth integration port and the third end. The single-axis integrated module also includes a filter assembly, which is detachably installed in the installation cavity.

[0032] Optionally, the single-axis integrated module also includes an attitude control module, which is located between the two first pipes and the second pipe. The attitude control module can switch between a first state, a second state, and a third state. When the attitude control module is in the first state, the second pipe is connected to one of the first pipes and disconnected from the other first pipe; when the attitude control module is in the second state, the second pipe is connected to the other first pipe and disconnected from one of the first pipes; when the attitude control module is in the third state, the second pipe is connected to both first pipes.

[0033] Optionally, the single-axis integrated module also includes a valve block, and the pressure-building module base also includes an eighth integrated port, which is located at the fourth end of the liquid supply line and is adapted to integrate the valve block with the pressure-building module base. The attitude control module includes a third pipeline and a second control valve assembly. The third pipeline is located inside the valve block and connected between the two first pipelines and the second pipeline, and the second control valve assembly is located in the third pipeline.

[0034] Optionally, the third pipeline includes a first pipeline section and a second pipeline section connected together, the first pipeline section being located between the second pipeline and one first pipeline, and the second pipeline section being located between the second pipeline and another first pipeline. The second control valve assembly is adapted to realize independent on / off control of the first pipeline section and the second pipeline section respectively.

[0035] Optionally, the first pipeline section includes a first pipeline segment and a second pipeline segment, and the second pipeline section includes a third pipeline segment and a fourth pipeline segment; the first pipeline segment and the third pipeline segment are connected to the second pipeline and are the same pipeline segment, the second pipeline segment is connected between one first pipeline and the first pipeline segment, and the fourth pipeline segment is connected between another first pipeline and the first pipeline segment; the second control valve assembly includes a third control valve and a fourth control valve, the third control valve is located in the second pipeline segment, and the fourth control valve is located in the fourth pipeline segment.

[0036] Optionally, the second control valve assembly may also include a fifth control valve located in the first pipeline section.

[0037] Optionally, at least a portion of the third and fourth piping sections extends to connect to the pressure-building module base and the fourth integration port.

[0038] Optionally, a third settling groove is provided inside the valve block, and the second control valve assembly is disposed inside the third settling groove.

[0039] Optionally, the valve block includes a valve block body and a cover. The second control valve assembly is disposed within the valve block body, and the cover is disposed on the side of the valve block body away from the pressure building module base and covers the opening of the third settling tank.

[0040] Optionally, the pressure-building module base includes a fourth side and a fifth side facing away from each other, with a fourth integration port and an eighth integration port respectively located on the fourth side and the fifth side.

[0041] Optionally, the single-axis integrated module also includes circuit elements, which are electrically connected to the pressure building device, the first control valve assembly, and the second control valve assembly.

[0042] Secondly, this application also provides a vehicle that may include any of the aforementioned hydraulic suspension systems. Attached Figure Description

[0043] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 This application provides structural schematic diagrams of vehicles for some embodiments;

[0045] Figure 2 This is a schematic diagram illustrating the structural principle of a hydraulic suspension system provided in an embodiment of this application.

[0046] Figure 3This is a schematic diagram of the structure of a single-axis integrated module provided in an embodiment of this application;

[0047] Figure 4 for Figure 3 A partial schematic diagram of the single-axis integrated module shown from a top view.

[0048] Figure 5 for Figure 3 A partial schematic diagram of the single-axis integrated module from another angle;

[0049] Figure 6 This is a schematic diagram of the structure of a hydraulic adjustment base provided in an embodiment of this application;

[0050] Figure 7 for Figure 6 The diagram shows the internal structure of the hydraulic adjustment base.

[0051] Figure 8 An internal structural diagram of a pressure-building module base provided in an embodiment of this application;

[0052] Figure 9 for Figure 8 The diagram shows the structure of the pressure-building module base on the fourth side.

[0053] Figure 10 for Figure 9 The diagram shows the structure of the pressure-building module base on the fifth side.

[0054] Figure 11 for Figure 3 A partial structural diagram of the single-axis integrated module shown from another angle;

[0055] Figure 12 for Figure 11 The diagram shows the structure of the single-axis integrated module.

[0056] Figure 13 for Figure 12 A partial schematic diagram of the single-axis integrated module is shown.

[0057] Figure label:

[0058] 1000. Vehicle; 01. Body; 02. Wheel; 03. Hydraulic suspension system; 1. Single axle integrated module; 001. Pressure build-up module; 002. Hydraulic adjustment module;

[0059] 10. Pressure building module base; 111. Fourth integrated port; 112. Fifth integrated port; 113. Sixth integrated port; 1131. Liquid inlet port; 1132. Liquid return port; 1133. Common port; 114. Seventh integrated port; 12. Second pipeline; 121. Liquid supply pipeline; 122. Liquid return pipeline; 10a. Fourth side; 10b. Fifth side;

[0060] 20. Hydraulic adjustment base; 211. First integrated port; 2111. First port; 2112. Third port; 2113. Fifth port; 212. Second integrated port; 2121. Sixth port; 2122. Seventh port; 213. Third integrated port; 2131. Second port; 2132. Fourth port; 221. First pipeline; 20a. First side; 20b. Second side; 20c. Third side; 231. First opening; 232. Second opening; 233. Third opening;

[0061] 30. Stiffness adjustment component; 31. First accumulator; 32. Second accumulator; 33. Third accumulator;

[0062] 40. Damping adjustment assembly; 41. Damping dual valve;

[0063] 50. First control valve assembly; 51. First control valve structure; 511. First control valve; 512. Second control valve; 52. Second control valve structure;

[0064] 60. Liquid storage device; 70. Pressure building device; 80. Reflux module; 90. Voltage accumulator;

[0065] 100. Filter assembly; 110. Attitude control module; 120. Valve block; 1201. Third settling tank; 1202. Valve block body; 1203. Cover;

[0066] 130. Third pipeline; 1301. First pipeline section; 1302. Second pipeline section; 130A. First pipeline section; 130B. Second pipeline section; 130C. Third pipeline section; 130D. Fourth pipeline section;

[0067] 140. Second control valve assembly; 1401. Third control valve; 1402. Fourth control valve; 1403. Fifth control valve;

[0068] 150. Circuit components. Detailed Implementation

[0069] In the embodiments of this application, the terms "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," "third," "fourth," "fifth," and "sixth" may explicitly or implicitly include one or more of that feature.

[0070] In embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0071] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0072] This application provides a vehicle 1000, which can be a pure electric vehicle, a hybrid electric vehicle, a plug-in hybrid electric vehicle, a range-extended electric vehicle, a gasoline vehicle, etc. The vehicle 1000 can also be a sedan, truck, bus, lorry, trailer, etc.

[0073] Please refer to Figure 1 , Figure 1 This is a structural schematic diagram of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 includes a body 01 and wheels 02. The body 01 is used for passengers to ride in and for carrying goods, and the wheels 02 are mounted under the body 01 to support the body 01 and are able to roll on the road surface so that the vehicle 1000 can move.

[0074] The vehicle may also include a suspension system, which is located between the body 01 and the wheels 02. The suspension system is used to transmit the forces and torques acting between the body 01 and the wheels 02, and to buffer the impact forces received by the body 01 during vehicle operation, so as to ensure smooth vehicle operation. The suspension system can be a non-independent suspension structure, an independent suspension structure, or an active suspension structure.

[0075] In some embodiments of this application, the suspension system may be a hydraulic suspension system 03. The stiffness and damping characteristics of the hydraulic suspension system 03 may be adjusted according to the driving conditions of the vehicle 1000 (such as the motion state of the vehicle 1000 and the road conditions) or the driver's own driving preferences, so that the hydraulic suspension system 03 is always in the best shock absorption state.

[0076] Because the hydraulic suspension system 03 has many components, and each component needs to be connected through pipes to achieve the flow of oil within the system, the structure of the hydraulic suspension system 03 is complex, with low integration, which is not conducive to assembly and maintenance.

[0077] To address this technical problem, this application provides a hydraulic suspension system 03, please refer to... Figure 2 , Figure 2This is a schematic diagram illustrating the structural principle of a hydraulic suspension system 03 provided in an embodiment of this application. The hydraulic suspension system 03 may include a single-axle integrated module 1, which is adapted to connect to two shock absorbers located on the front or rear axle of a vehicle 1000, so that oil can flow in or out of the shock absorbers, thereby adjusting the vehicle's shock absorption performance.

[0078] Please refer to Figure 2 , Figure 3 and Figure 4 , Figure 3 This is a schematic diagram of the structure of a single-axis integrated module 1 provided in an embodiment of this application. Figure 4 for Figure 3 The diagram shown is a partial top view of the single-axis integrated module 1. The single-axis integrated module 1 includes a pressure building module 001 and two hydraulic adjustment modules 002, which are detachably connected.

[0079] The pressure-building module 001 can supply fluid to two hydraulic adjustment modules 002, which are respectively connected to two shock absorbers to supply fluid to them. Since the pressure-building module 001 and the hydraulic adjustment modules 002 are detachably connected, they can be assembled, inspected, or replaced individually as modules. This improves the integration of the hydraulic suspension system 03, reduces maintenance difficulty, and saves maintenance costs.

[0080] In some embodiments, two hydraulic adjustment modules 002 are respectively disposed on opposite sides of the pressure building module 001, and the two hydraulic adjustment modules 002 are symmetrically arranged about the pressure building module 001.

[0081] Thus, since the two hydraulic adjustment modules 002 are respectively connected to the two shock absorbers of the front axle or the rear axle of the vehicle 1000, the two shock absorbers of the front axle of the vehicle 1000 are used to connect the two front wheels, and the two shock absorbers of the rear axle of the vehicle 1000 are used to connect the two rear wheels, and the two hydraulic adjustment modules 002 are located on opposite sides of the pressure building module 001, it can help to make the spatial layout of the hydraulic adjustment module 002, the shock absorbers and the wheels 02 more reasonable.

[0082] The two hydraulic adjustment modules 002 are symmetrically arranged about the pressure build-up module 001, which makes the stiffness or damping of the two sides of the hydraulic suspension system 03 symmetrical, helping to maintain the balance of the two sides of the vehicle 1000. At the same time, when one side of the vehicle 1000 fails, the other side can be compared with the failed side, which makes it easier to find the problem and reduces the difficulty of maintenance.

[0083] In some embodiments, the pressure-building module 001 includes a pressure-building module base 10, and the hydraulic adjustment module 002 includes a hydraulic adjustment base 20. The pressure-building module base 10 is detachably connected to the two hydraulic adjustment bases 20 to supply fluid to the two shock absorbers via the two hydraulic adjustment bases 20.

[0084] Thus, the hydraulic adjustment base 20 enables the supply of fluid to the shock absorber, and the oil within the hydraulic suspension system 03 can circulate within the pressure-building module base 10 and the hydraulic adjustment base 20. The inflow or outflow of the oil is regulated by the hydraulic adjustment base 20. The single-axis integrated module 1 can integrate the pipes and components within the hydraulic suspension system 03, making the hydraulic suspension system 03 modular, thereby improving the integration level of the hydraulic suspension system 03 and facilitating system assembly.

[0085] Meanwhile, the pressure-building module base 10 is detachably connected to the hydraulic adjustment base 20. When the hydraulic suspension system 03 malfunctions, individual modules can be inspected, repaired, or replaced, thereby reducing maintenance difficulty and saving maintenance costs.

[0086] Furthermore, if the hydraulic suspension system 03 connects various components via pipes, sealing structures are required at the joints of multiple pipes. If these seals fail, oil leakage will occur. Because there are many pipes and multiple seals are needed, the risk of oil leakage is significantly increased.

[0087] In other embodiments of this application, the pressure-building module base 10 and the two hydraulic adjustment bases 20 can also be an integrated structure, further improving the system integration.

[0088] The hydraulic suspension system 03 provided in this application embodiment supplies fluid to the shock absorber through the hydraulic adjustment base 20. No pipeline connection is required, no sealing structure is needed between the oil lines, and there is no risk of oil leakage, thereby ensuring the stable operation of the hydraulic suspension system 03.

[0089] Please refer to Figures 2-5 , Figure 5 for Figure 3 The diagram shows a partial view of the single-axis integrated module 1 from another angle. In some embodiments of this application, two hydraulic adjustment bases 20 are located on opposite sides of the pressure building module base 10, and the two hydraulic adjustment bases 20 are symmetrically arranged about the pressure building module base 10.

[0090] Since the two hydraulic adjustment bases 20 are respectively connected to the two shock absorbers of the front axle or the rear axle of the vehicle 1000, the two shock absorbers of the front axle of the vehicle 1000 are used to connect the two front wheels, and the two shock absorbers of the rear axle of the vehicle 1000 are used to connect the two rear wheels, the two hydraulic adjustment bases 20 are located on opposite sides of the pressure building module base 10, which can help to make the spatial layout of the hydraulic adjustment bases 20, shock absorbers and wheels 02 more reasonable.

[0091] The two hydraulic adjustment bases 20 are symmetrically arranged about the pressure-building module base 10, which makes the stiffness or damping of the hydraulic suspension system 03 symmetrical on both sides, helping to maintain the balance of the two sides of the vehicle 1000. At the same time, when a fault occurs on one side of the vehicle 1000, the other side can be compared with the faulty side, which makes it easier to find the problem and reduces the difficulty of maintenance.

[0092] In some embodiments, the pressure building module base 10 and the hydraulic adjustment base 20 can be connected by bolts, which facilitates the installation and disassembly of the pressure building module base 10 and the two hydraulic adjustment bases 20, and enables rapid replacement and maintenance of the structure of the single-axis integrated module 1.

[0093] Please refer to Figure 3 , Figures 5-7 , Figure 6 This is a schematic diagram of the structure of a hydraulic adjustment base 20 provided in an embodiment of this application. Figure 7 for Figure 6 The diagram shows the internal structure of the hydraulic adjustment base 20. In some embodiments, the hydraulic adjustment module 02 includes a stiffness adjustment component 30 and a damping adjustment component 40. The hydraulic adjustment base 20 may include a first integration port 211 and a second integration port 212. The first integration port 211 is adapted to integrate the hydraulic adjustment base 20 with the stiffness adjustment component 30, and the second integration port 212 is adapted to integrate the hydraulic adjustment base 20 with the damping adjustment component 40. The hydraulic adjustment base 20 is provided with a first pipeline 221, which is adapted to connect the stiffness adjustment component 30, the damping adjustment component 40, and the corresponding shock absorbers.

[0094] Thus, the hydraulic adjustment base 20 can integrate the stiffness adjustment component 30 and the damping adjustment component 40 onto the hydraulic suspension system 03. Since the first pipeline 221 is suitable for connecting the stiffness adjustment component 30, the damping adjustment component 40 and the corresponding shock absorber, the hydraulic oil and other fluids in the first pipeline 221 can be adjusted by the stiffness adjustment component 30 and the damping adjustment component 40 to achieve the adjustment of the stiffness and damping characteristics of the hydraulic suspension system 03.

[0095] The hydraulic oil in the hydraulic suspension system 03 can flow through the first pipe 221 in the hydraulic adjustment base 20, eliminating the need for multiple pipe connections, improving system integration, and reducing the number of pipes. This reduces the weight of the hydraulic suspension system 03 and helps the vehicle 1000 achieve weight reduction.

[0096] In some embodiments, the hydraulic adjustment module 02 includes a first control valve assembly 50, and the hydraulic adjustment base 20 further includes a third integration port 213. The third integration port 213 is adapted to integrate the hydraulic adjustment base 20 with the first control valve assembly 50. The first control valve assembly 50 is adapted to control the on / off state of the stiffness adjustment assembly 30, the damping adjustment assembly 40 and the corresponding shock absorber.

[0097] Thus, the first control valve assembly 50 can also be integrated onto the hydraulic adjustment base 20 through the third integration port 213, thereby controlling the on / off state and flow rate of the oil in the hydraulic suspension system 03, which facilitates the adjustment of the system's stiffness and damping characteristics.

[0098] In some embodiments, the first pipeline 221 includes a main pipeline with opposing first and second ends. The first end is adapted to connect to the pressure-building module base 10, and the second end is adapted to connect to a corresponding vibration damper. The stiffness adjustment assembly 30 includes a first accumulator 31, and a first integration port 211 includes a first port 2111 connected to the main pipeline. The first port 2111 is adapted to integrate the hydraulic adjustment base 20 with the first accumulator 31.

[0099] The main pipeline can connect the pressure-building module base 10 to the shock absorber, enabling the shock absorber to buffer the vibration of the vehicle 1000. The first accumulator 31 is connected to the main pipeline through the first port 2111, and oil can enter or exit the first accumulator 31 to achieve different stiffness effects of the hydraulic suspension system 03.

[0100] For example, the first accumulator 31 can be a diaphragm accumulator, or it can also be a bellows accumulator or a piston accumulator, etc. This application does not further limit it in this regard.

[0101] In some embodiments, the first accumulator 31 can be used to adjust stiffness. When the hydraulic suspension system 03 needs to adjust stiffness, oil can flow into or out of the first accumulator 31. The first accumulator 31 can store oil in the main pipeline, thereby changing the stiffness of the hydraulic suspension system 03 and realizing the function of an oil-air spring.

[0102] In some embodiments, the section of the main pipeline located between the first port 2111 and the second end is the first main pipeline section, the first control valve assembly 50 includes a first control valve structure 51, and the third integration port 213 includes a second port 2131 located in the first main pipeline section and / or located between the main pipeline and the first port 2111. The second port 2131 is adapted to integrate the hydraulic regulating base 20 with the first control valve structure 51.

[0103] Since the first control valve structure 51 is connected to the first main pipeline section and / or located between the main pipeline and the first port 2111, that is, the first control valve structure 51 is connected between the first accumulator 31 and the shock absorber and / or connected to the branch from the main pipeline to the first accumulator 31, the first control valve structure 51 can open and close the oil circuit, thereby controlling the connection between the main pipeline and the first accumulator 31, and thus controlling the flow of oil in and out between the main pipeline and the first accumulator 31.

[0104] For example, the first control valve structure 51 may include a stiffness valve, which may be an electromagnetic switch valve. During the rapid lifting process of the hydraulic suspension system 03, the stiffness valve remains closed to prevent oil from the main pipeline from entering the first accumulator 31 and causing pressure loss during the lifting process. When the hydraulic suspension system 03 adjusts its own structural stiffness, the stiffness valve can be adjusted in real time to control the oil flow state and meet the system stiffness requirements.

[0105] In some embodiments, the stiffness adjustment assembly 30 may further include a second accumulator 32, and the first integration port 211 may further include a third port 2112 connected to the first main pipeline section, the third port 2112 being adapted to integrate the hydraulic adjustment base 20 with the second accumulator 32.

[0106] The stiffness adjustment component 30 is equipped with a second accumulator 32 connected to the main pipeline. The second accumulator 32 can also be filled or drained by oil to achieve different stiffness effects of the hydraulic suspension system 03.

[0107] For example, the second accumulator 32 can be configured as a bellows accumulator, or it can be configured as a diaphragm type, piston type, or other different types of accumulators. This application does not further limit it in this regard.

[0108] In some embodiments, the second accumulator 32 can also be used to adjust stiffness. The second accumulator 32 can achieve different stiffness effects of the hydraulic suspension system 03 by the entry and exit of oil.

[0109] In some embodiments, the section of the first main pipeline segment located between the third port 2112 and the second end is a sub-segment of the first main pipeline. The first control valve assembly 50 may also include a second control valve structure 52. The third integration port 213 may include a fourth port 2132 located in the first main pipeline sub-segment and / or located between the main pipeline and the third port 2112. The fourth port 2132 is adapted to integrate the hydraulic regulating base 20 with the second control valve structure 52.

[0110] Since the second control valve structure 52 is connected to the first main pipeline sub-section and / or located between the main pipeline and the third port 2112, that is, the second control valve structure 52 is connected between the second accumulator 32 and the damper and / or connected to the branch from the main pipeline to the second accumulator 32, the second control valve structure 52 can control the connection between the main pipeline and the second accumulator 32, thereby controlling the flow of oil in or out between the main pipeline and the second accumulator 32.

[0111] For example, the second control valve structure 52 can be a lock-up valve, or it can be a solenoid valve. Under normal vehicle conditions, the lock-up valve remains open. As the pressure between the vehicle body and the wheels changes, fluid can flow into or out of the second accumulator 32 to achieve buffering and shock absorption of the hydraulic suspension system 03. When the vehicle is stationary or when the suspension height does not need to be adjusted, the lock-up valve is switched to the closed state, preventing fluid from entering or leaving the second accumulator 32, thus stabilizing the suspension height.

[0112] In some embodiments, the first control valve structure 51 may include a first control valve 511 and a second control valve 512. The number of second ports 2131 is two. One second port 2131 is located in the first main pipeline section and between the third port 2112 and the first port 2111. The other second port 2131 is located between the main pipeline and the first port 2111. The two second ports 2131 are respectively used to integrate the hydraulic regulating base 20 with the first control valve 511 and to integrate the hydraulic regulating base 20 with the second control valve 512.

[0113] Thus, the first control valve 511 located in the first main pipeline section can control the flow state of the oil in the main pipeline, and the second control valve 512 located between the main pipeline and the first port 2111 can control the inlet and outlet state of the oil between the main pipeline and the first accumulator 31. By adjusting the state of the oil, the stiffness of the hydraulic suspension system 03 can be adjusted.

[0114] For example, the first control valve 511 can be a regulating valve, and the second control valve 512 can be a stiffness valve. The regulating valve can also be a solenoid switch valve. The regulating valve remains open during normal vehicle lifting, allowing oil to flow in the main pipeline. The pressure-building module base 10 can supply fluid to the shock absorbers, achieving smooth vehicle lifting. When it is necessary to charge the first accumulator 31, the regulating valve is switched to the closed state, disconnecting the oil circuit of the main pipeline, and the oil supplied by the pressure-building module base 10 enters the first accumulator 31.

[0115] In some embodiments, the stiffness adjustment assembly 30 may further include a third accumulator 33, and the first integration port 211 may further include a fifth port 2113 connected to the first main pipeline section, the fifth port 2113 being adapted to integrate the hydraulic adjustment base 20 with the third accumulator 33.

[0116] In this way, the third accumulator 33 can also be connected to the main pipeline, and the hydraulic suspension system 03 can achieve different stiffness effects by the flow of oil into or out of the third accumulator 33.

[0117] In some embodiments, the third accumulator 33 can also be used to adjust stiffness. The third accumulator 33 can reduce pressure in the main pipeline. When the pressure in the main pipeline exceeds the preset pressure, the third accumulator 33 will intervene and the oil in the main pipeline can enter the third accumulator 33 to reduce the pressure in the main pipeline, so as to realize the stiffness adjustment of the hydraulic suspension system 03 structure. When the pressure in the main pipeline is less than the preset pressure, the third accumulator will not intervene.

[0118] In some embodiments, a first recess is provided on the hydraulic adjustment base 20 at the position corresponding to each port in the third integration port 213, and the first recess is used to accommodate the control valve of the first control valve assembly 50.

[0119] In this way, the control valve of the first control valve assembly 50 can be housed within the hydraulic adjustment base 20, facilitating communication between the first control valve assembly 50 and the main pipeline for hydraulic fluid regulation. Furthermore, placing the first control valve assembly 50 within the first recess saves space required for the first control valve assembly 50, thereby reducing the spatial layout requirements of the hydraulic suspension system 03.

[0120] In some embodiments, the second integrated port 212 includes a sixth port 2121 and a seventh port 2122 located on the main pipeline, the sixth port 2121 and the seventh port 2122 being adapted to integrate the hydraulic adjustment base 20 with both ends of the damping adjustment assembly 40.

[0121] In this way, the second integrated port 212 can connect the damping adjustment component 40 to the main pipeline, thereby realizing the adjustment of the damping characteristics of the hydraulic suspension system 03.

[0122] In some embodiments, the damping adjustment component 40 can be a damping valve, which is an electromagnetic proportional valve. The magnitude of the electromagnetic force is controlled by the current, thereby controlling the opening size of the damping valve and realizing the flow control of the main pipeline. By adjusting the inflow and outflow of oil, a certain pressure difference can be created on both sides of the damping valve, thereby providing a corresponding damping force and providing damping for the system.

[0123] In some embodiments, the damping adjustment assembly 40 includes a damping double valve 41, a sixth port 2121 adapted to connect one end of the damping double valve 41, and a seventh port 2122 adapted to connect the other end of the damping double valve 41.

[0124] Thus, when subjected to impacts from road surfaces, the damping at the inlet and outlet of the shock absorber can be set differently, i.e., two different damping forces can be set to adjust the damping force. Furthermore, when subjected to severe impacts from the road surface, the damping dual valve 41 continuously supplies oil to and from the shock absorber. By setting two damping forces through the damping dual valve 41, control of the damping forces for both oil inlet and outlet can be achieved. That is, during oil inlet, the damping of the outlet can be quickly adjusted; during oil outlet, the damping force of the inlet can be quickly set, thereby achieving faster damping adjustment.

[0125] In some embodiments, a second recess is provided on the hydraulic adjustment base 20 at the position corresponding to the second integration port 212, and the second recess is used to accommodate the damping adjustment component 40.

[0126] In this way, the damping adjustment component 40 can be housed within the hydraulic adjustment base 20, facilitating the connection between the first control valve component 50 and the main pipeline for hydraulic fluid regulation. Furthermore, placing the first control valve component 50 within the first recess saves space required for the first control valve component 50, thereby reducing the spatial layout requirements of the hydraulic suspension system 03.

[0127] In some embodiments, the hydraulic adjustment base 20 may include a first side 20a and a second side 20b connected to each other. The first side 20a is connected to the pressure building module base 10, and a first port 2111 and a second integrated port 212 are disposed on the first side 20a, while a second port 2131 and a third port 2112 are disposed on the second side 20b.

[0128] In this way, the space around the hydraulic adjustment base 20 can be rationally utilized according to the dimensions of the stiffness adjustment component 30 and the damping adjustment component 40, which helps to save space layout requirements of the hydraulic suspension system 03.

[0129] In some embodiments, the hydraulic adjustment base 20 further includes a third side 20c, which is connected to both the first side 20a and the second side 20b, and a third integrated port 213 is disposed on the third side 20c.

[0130] This allows the first control valve assembly 50 to be better connected to different flow sections in the first pipeline 221, maximizing space utilization.

[0131] In some embodiments of this application, the stiffness adjustment component 30 and the corresponding interface on the hydraulic adjustment base 20 can be connected by bolts to fix the first accumulator 31, the second accumulator 32 and the third accumulator 33.

[0132] A seal can be provided between the stiffness adjustment component 30 and the corresponding interface on the hydraulic adjustment base 20 to seal the interface and prevent leakage during oil flow. For example, the seal can be an O-ring or a rubber gasket.

[0133] In some embodiments, the damping adjustment assembly 40 and the first control valve assembly 50 can also be bolted to corresponding interfaces on the hydraulic adjustment base 20, and a seal is provided between the damping adjustment assembly 40 and the first control valve assembly 50 and the corresponding interface to prevent oil leakage. For example, the seal can also be an O-ring.

[0134] In some embodiments, the hydraulic adjustment base 20 may be provided with a first opening 231, which is connected to the first pipeline 221. The single-axis integrated module 1 may include a vent plug disposed at the first opening 231. The first opening 231 can release gas from the first pipeline 221 to prevent air bubbles in the hydraulic fluid from causing malfunction of the hydraulic suspension system 03. For example, the vent plug may be a vent bolt.

[0135] In some embodiments, the hydraulic adjustment base 20 may also be provided with a second opening 232, which is connected to the first pipeline 221. This second opening 232 can be connected to a sensor to detect the hydraulic circuit. For example, the sensor may be a temperature sensor, a pressure sensor, or a combined temperature and pressure sensor, etc.

[0136] When it is not necessary to monitor the status of the hydraulic circuit, a bolt can be installed at the second opening 232 to seal the second opening 232.

[0137] Since a closed loop cannot be directly formed inside the hydraulic regulating base 20 during the machining of its internal pipelines, a third opening 233 connected to the first pipeline 221 can be present on the surface of the hydraulic regulating base 20. The hydraulic regulating base 20 may also include a sealing ball, which, when installed at the third opening 233, can seal the first pipeline 221 and prevent oil leakage.

[0138] Please refer to Figure 3 , Figure 8 , Figure 9 and Figure 10 , Figure 8 This is an internal structural diagram of a pressure-building module base 10 provided in an embodiment of this application. Figure 9 for Figure 8 The diagram shown is a structural schematic of the pressure-building module base 10 on the fourth side 10a. Figure 10 for Figure 8 The schematic diagram of the pressure-building module base 10 on its fifth side 10b is shown. In some embodiments, the pressure-building module base 10 includes a fourth integration port 111, which is adapted to connect the hydraulic regulating base 20 to the pressure-building module base 10. The pressure-building module base 10 is also provided with a second pipeline 12, which is adapted to realize the supply or return of liquid to the two first pipelines 221.

[0139] In this way, the hydraulic oil can flow sequentially through the second pipe 12, the fourth integrated port 111 and the first pipe 221 into the shock absorber. The hydraulic oil flows through the first pipe 221 and the second pipe 12 to achieve the shock absorption function of the hydraulic suspension system 03.

[0140] By setting a second pipeline 12 inside the pressure building module base 10, oil can flow in the second pipeline 12 to achieve fluid supply, which can improve the integration of the hydraulic suspension system 03 and reduce sealing problems caused by pipeline connection.

[0141] In some embodiments, the hydraulic suspension system 03 may further include a fluid supply system, which may include a fluid storage device 60, and the second pipeline 12 includes a fluid supply pipeline 121, which includes a third end and a fourth end opposite to each other. The third end is adapted to connect to the fluid storage device 60, and the fourth end is adapted to connect to two first pipelines 221.

[0142] In this way, the oil in the reservoir 60 can enter the first pipeline 221 within the two hydraulic adjustment bases 20 through the supply pipeline 121. The stiffness and damping of the hydraulic suspension system 03 can be adjusted by the adjustment components on the hydraulic adjustment base 20, thereby achieving the functions of shock absorption and vehicle attitude adjustment. The pipeline between the reservoir 60 and the hydraulic adjustment base 20 can be integrated through the supply pipeline 121, simplifying the structure of the hydraulic suspension system 03, improving integration, and reducing the risk of oil leakage.

[0143] In some embodiments, the liquid supply system may further include a pressure building device 70, and the pressure building module base 10 may include a fifth integration port 112, which is provided in the liquid supply pipeline 121 and is adapted to integrate the pressure building module base 10 with the pressure building device 70.

[0144] The pressure building device 70 can input the hydraulic oil in the reservoir 60 into the supply line 121. By adjusting the amount of hydraulic oil input into the supply line 121, the pressure of the oil in the first line 221 and the second line 12 can be adjusted, thereby adjusting the buffering performance of the hydraulic suspension system 03.

[0145] In some embodiments, the pressure building device 70 may include a pump body and a motor. At least part of the pump body is disposed in the liquid storage device 60, and the pump body may be connected to the pressure building module base 10. The motor may be connected to the pump body and provide driving force to the pump body so that the hydraulic oil in the liquid storage device 60 is pumped into the liquid supply line 121 to provide a working basis for the hydraulic suspension system 03.

[0146] For example, the pump body can be a gear pump, and the gear pump can be driven to operate by the motor to provide the corresponding speed to the gear pump, thereby enabling the operation of other components in the oil supply system of the liquid storage device 60.

[0147] In some embodiments, the pressure building module base 10 may further include a sixth integrated port 113, which is disposed in the liquid supply line 121 and located between the fourth end and the fifth integrated port 112. The sixth integrated port 113 is adapted to integrate and connect the pressure building module base 10 with the return module 80.

[0148] When the vehicle 1000 needs to descend, the return module 80 allows the oil in the first pipe 221 and the second pipe 12 to flow back into the reservoir 60, thereby reducing the pressure in the hydraulic suspension system 03 and allowing the vehicle 1000 to descend quickly. Connecting to the return module 80 via the sixth integration port 113 allows the oil in the second pipe 12 to flow out through the sixth integration port 113, improving the system's integration.

[0149] In some embodiments, the sixth integrated port 113 may include an inlet port 1131, a return port 1132, and a common port 1133, with the inlet port 1131 and the common port 1133 connected to the supply line 121; the second line 12 also includes a return line 122, with one end of the return line 122 connected to the return port 1132 and the other end adapted to be connected to the storage device 60.

[0150] When fluid needs to be supplied to the fluid supply line 121, the fluid can flow sequentially through the inlet port 1131 and the common port 1133 on the fluid supply line 121 to the fourth end, so as to supply hydraulic fluid to the two first lines 221; when the vehicle 1000 needs to descend rapidly, the fluid can flow sequentially through the common port 1133 and the return port 1132 to the return line 122, and then flow back to the storage device 60 through the return line 122, so as to rapidly reduce the fluid in the fluid supply line 121, so as to achieve the rapid descent of the vehicle 1000.

[0151] Because oil pulses may occur during gear pump operation, causing unstable oil flow, the shock absorption performance of vehicle 1000 may be affected. In some embodiments, the pressure-building module base 10 may further include a seventh integrated port 114, which is connected to a portion of the fluid supply line 121 between the common port 1133 and the fourth end. The seventh integrated port 114 is adapted to integrate the pressure-building module base 10 with the voltage accumulator 90.

[0152] When fluid is supplied to the fluid supply line 121, some of the fluid can flow into or out of the voltage accumulator 90 through the seventh integration port 114 to reduce the pressure pulse of the fluid, thereby providing stable fluid to the hydraulic suspension system 03, enabling the system to operate stably and reducing vehicle vibration or bumps.

[0153] In some embodiments, the pressure building module base 10 may also be provided with an installation cavity, which is located in part of the liquid supply pipeline between the fifth integrated port 112 and the sixth integrated port 113; the single-axis integrated module 1 may also include a filter assembly 100, which is detachably disposed in the installation cavity.

[0154] The fifth integrated port 112 is suitable for connecting the pressure building device 70, which can deliver oil to the supply pipeline 121. The filter assembly 100 is located in the mounting cavity between the fifth integrated port 112 and the sixth integrated port 113. It can filter the oil entering the supply pipeline 121 to prevent external impurities or impurities generated during the internal oil flow from entering the supply pipeline 121 and causing blockage of the pipeline, thus affecting the overall operation of the system.

[0155] In addition, the filter assembly 100 is detachable, which facilitates cleaning and maintenance of the filter assembly 100.

[0156] In some embodiments, the single-axis integrated module 1 further includes an attitude control module 110, which is disposed between the two first pipes 221 and the second pipe 12. The attitude control module 110 can switch between a first state, a second state, and a third state. When the attitude control module 110 is in the first state, the second pipe 12 is connected to one of the first pipes 221 and disconnected from the other first pipe 221. When the attitude control module 110 is in the second state, the second pipe 12 is connected to the other first pipe 221 and disconnected from one of the first pipes 221. When the attitude control module 110 is in the third state, the second pipe 12 is connected to both first pipes 221.

[0157] Thus, the attitude control module 110 can be used to adjust the left shock absorber of the vehicle 1000 individually, or adjust the right shock absorber of the vehicle 1000 individually, or adjust the two shock absorbers on a single axle of the vehicle 1000 simultaneously.

[0158] Please refer to Figure 3 , Figures 6 to 13 , Figure 11 for Figure 3 The diagram shown is a partial structural diagram of the single-axis integrated module 1 from another angle. Figure 12 for Figure 11 The diagram shown is a structural schematic of the single-axis integrated module 1. Figure 13 for Figure 12 The schematic diagram of the single-axis integrated module 1 shown is shown in some embodiments. The single-axis integrated module 1 further includes a valve block 120. The pressure building module base 10 may also include an eighth integration port 115. The eighth integration port 115 is located at the fourth end of the liquid supply line 121 and is adapted to integrate the valve block 120 with the pressure building module base 10.

[0159] The attitude control module 110 may include a third pipeline 130 and a second control valve assembly 140; the third pipeline 130 is located inside the valve block 120 and is connected between the two first pipelines 221 and the second pipeline 12, and the second control valve assembly 140 is located in the third pipeline 130.

[0160] By placing the second control valve assembly 140 in the third pipeline 130 and connecting the third pipeline 130 to the end of the second pipeline 12, the flow rate and direction of the oil flowing out of the second pipeline 12 can be controlled by adjusting the second control valve assembly 140 to control the opening and closing of the third pipeline 130.

[0161] In some embodiments, the third pipeline 130 includes a first pipeline portion 1301 and a second pipeline portion 1302 connected to each other; the first pipeline portion 1301 is disposed between the second pipeline 12 and a first pipeline 221, and the second pipeline portion 1302 is disposed between the second pipeline 12 and another first pipeline 221; the second control valve assembly 140 is adapted to realize independent on / off control of the first pipeline portion 1301 and the second pipeline portion 1302 respectively.

[0162] When the first pipe section 1301 is connected, oil can flow through the second pipe 12, the first pipe section 1301, and another first pipe 221 to the vibration damper on one side. When the second pipe section 1302 is connected, oil can flow through the second pipe 12, the second pipe section 1302, and another first pipe 221 to the vibration damper on the other side. In this way, by independently controlling the opening and closing of the first pipe section 1301 and the second pipe section 1302, the two vibration dampers on a single shaft can be adjusted individually.

[0163] In some embodiments, the first pipeline portion 1301 includes a first pipeline section 130A and a second pipeline section 130B, and the second pipeline portion 1302 includes a third pipeline section 130C and a fourth pipeline section 130D.

[0164] The first pipeline section 130A and the third pipeline section 130C are connected to the second pipeline 12 and are the same pipeline section. The second pipeline section 130B is connected between a first pipeline 221 and the first pipeline section 130A. The fourth pipeline section 130D is connected between another first pipeline 221 and the first pipeline section 130A.

[0165] The second control valve assembly 140 includes a third control valve 1401 and a fourth control valve 1402. The third control valve 1401 is located in the second pipeline section 130B, and the fourth control valve 1402 is located in the fourth pipeline section 130D.

[0166] Thus, by controlling the third control valve 1401 and the fourth control valve 1402 respectively, the on / off state of the second pipeline section 130B and the fourth pipeline section 130D can be controlled, thereby adjusting the left or right vibration damper respectively.

[0167] In other embodiments, the first pipeline section 130A and the third pipeline section 130C may also be two separate pipeline sections, which is not limited in this application.

[0168] In some embodiments, the third control valve 1401 and the fourth control valve 1402 can be leveling valves. These leveling valves are electromagnetic switching valves, primarily used to control the inflow and outflow of oil in a single first pipeline 221, thereby controlling the amount of oil flowing into and out of that pipeline.

[0169] When a vehicle is subjected to a huge impact, a pressure pulse will be generated in the hydraulic suspension system 03. The high-pressure pulse may cause the valve to open, resulting in oil leakage.

[0170] Therefore, in some embodiments, the second control valve assembly 140 further includes a fifth control valve 1403, which is located in the first pipeline section 130A.

[0171] Since the first pipeline section 130A is a shared section of the first pipeline section 1301 and the second pipeline section 1302, by installing a fifth control valve 1403 on the first pipeline section 130A, the on / off state of the entire third pipeline 130 can be controlled, thereby adjusting the on / off state of the oil circuit within the entire hydraulic suspension system 03. Simultaneously installing the third, fourth, and fifth control valves provides dual protection, making the suspension height of vehicle 1000 more stable.

[0172] In some embodiments, at least a portion of the second conduit section 130B and the fourth conduit section 130D extend to the pressure build-up module base 10 and connect to the fourth integration port 111.

[0173] Since the second pipeline section 130B and the fourth pipeline section 130D can be connected to the two first pipelines 221 on both sides respectively, and the pressure building module base 10 is provided with a fourth integrated port 111, which is connected to the hydraulic adjustment base 20, extending the second pipeline section 130B and the fourth pipeline section 130D to the fourth integrated port 111, they can be directly connected to the hydraulic adjustment base 20 through the pressure building module base 10 without the need for additional interfaces, thus reducing the risk of oil leakage.

[0174] In some embodiments, a third settling groove 1201 is provided in the valve block 120, and the second control valve assembly 140 is disposed in the third settling groove 1201.

[0175] In this way, the valve block 120 can protect the control valve of the second control valve assembly 140, facilitating installation and fixation. In addition, since the third pipeline 130 is also located within the valve block 120, and the second control valve assembly 140 is located within the third recess 1201, the space required for the second control valve assembly 140 can be saved, thereby reducing the space layout requirements of the hydraulic suspension system 03.

[0176] In some embodiments, the valve block 120 includes a valve block body 1202 and a cover 1203. The second control valve assembly 140 is disposed inside the valve block body 1202. The cover 1203 covers the side of the valve block body 1202 away from the pressure building module base 10 and covers the opening of the third sink 1201.

[0177] Thus, the cover 1203 can protect the second control valve assembly 140, thereby reducing damage to the second control valve assembly 140.

[0178] In some embodiments, the pressure building module base 10 includes a fourth side 10a and a fifth side 10b facing each other, a fourth integration port 111 is disposed on the fourth side 10a, and an eighth integration port 115 is disposed on the fifth side 10b.

[0179] In this way, the space around the pressure-building module base 10 can be rationally utilized based on the connection relationship between the hydraulic adjustment base 20 and the pressure-building module base 10 and the size of the valve block 120, which helps to save space layout requirements of the hydraulic suspension system 03.

[0180] In some embodiments, the single-axis integrated module 1 further includes a circuit element 150, which is electrically connected to the pressure-building device 70, the first control valve assembly 50, and the second control valve assembly 140. This allows power to be supplied to the control valves to open and close them, thereby controlling the flow of oil.

[0181] In some embodiments, circuit element 150 may include a control valve connection wire and a circuit board, wherein the control valve connection wire can be fixedly connected to the circuit board. For example, the control valve connection wire can be soldered to corresponding positioning holes and pins on the circuit board. Additionally, a protective plate can be added to the circuit board, and adhesive can be filled between the circuit board and the protective plate to eliminate the gap between them, ensuring their relative positions remain stable and preventing damage from collisions during vibration.

[0182] Since the hydraulic suspension system 03 may include a leveling valve, a stiffness valve, and a lock-up valve, the stiffness of the hydraulic suspension system 03 can be adjusted by controlling the opening and closing of different control valves.

[0183] Specifically, the hydraulic suspension system 03 can have eight levels of stiffness adjustment.

[0184] By controlling the third control valve 1401 and the fourth control valve 1402 to be closed, that is, the two leveling valves connecting the two first pipelines 221 are closed, and the second control valve 512 and the second control valve structure 52 controlling the two first pipelines 221 to be opened, that is, the stiffness valve 11 and the lock-up valve 13 are opened, the first stage of stiffness adjustment can be achieved.

[0185] By controlling the third control valve 1401 and the fourth control valve 1402 to be closed, that is, the two leveling valves connecting the two first pipelines 221 to be closed, and the second control valve 512 controlling the two first pipelines 221 to be opened and the second control valve structure 52 to be closed, that is, the stiffness valve is open and the lock-up valve is closed, the second stage of stiffness adjustment can be achieved.

[0186] By controlling the third control valve 1401 and the fourth control valve 1402 to be closed, that is, the two leveling valves connecting the two first pipelines 221 to be closed, the second control valve 512 controlling the two first pipelines 221 to be closed, and the second control valve structure 52 to be opened, that is, the stiffness valve is closed and the lock-up valve is opened, the third-level stiffness adjustment can be achieved.

[0187] By controlling both the third control valve 1401 and the fourth control valve 1402 to open, that is, both leveling valves connecting the two first pipelines 221 to open, and controlling both the second control valve 512 and the second control valve structure 52 of the two first pipelines 221 to open, that is, both the stiffness valve and the lock-up valve to open, the fourth level of stiffness adjustment can be achieved.

[0188] By controlling both the third control valve 1401 and the fourth control valve 1402 to open, that is, both leveling valves connecting the two first pipelines 221 to open, controlling both the second control valve structures 52 of the two first pipelines 221 to open, that is, both lock-up valves to open, and controlling the second control valve 512 of one first pipeline 221 to open and the second control valve 512 of the other first pipeline 221 to close, that is, one stiffness valve is open and the other stiffness valve is closed, the fifth level of stiffness adjustment can be achieved.

[0189] By controlling both the third control valve 1401 and the fourth control valve 1402 to open, that is, both leveling valves connecting the two first pipelines 221 to open, controlling both the second control valves 512 of the two first pipelines 221 to open, that is, both stiffness valves to open, and controlling the second control valve structure 52 of one first pipeline 221 to open and the second control valve structure 52 of the other first pipeline 221 to close, that is, one side of the locking valve is open and the other side of the locking valve is closed, the sixth level of stiffness adjustment can be achieved.

[0190] By controlling both the third control valve 1401 and the fourth control valve 1402 to be open, that is, both leveling valves connecting the two first pipelines 221 to be open, and the second control valve 512 controlling the two first pipelines 221 to be open, and the second control valve structure 52 to be closed, that is, the stiffness valves to be open and the lock-up valves to be closed, the seventh level of stiffness adjustment can be achieved.

[0191] By controlling both the third control valve 1401 and the fourth control valve 1402 to be open, that is, both leveling valves connecting the two first pipelines 221 to be open, and controlling both the second control valves 512 controlling the two first pipelines 221 to be closed, and controlling both the second control valve structures 52 to be open, that is, both stiffness valves to be closed and both lock-up valves to be open, the eighth level of stiffness adjustment can be achieved.

[0192] In the description of the embodiments of this application, specific features, structures, materials or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0193] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A hydraulic suspension system, characterized in that, Includes a single-axis integrated module (1) adapted to connect to two shock absorbers located on the front or rear axle of a vehicle, the single-axis integrated module (1) including a pressure-building module (001) and two hydraulic adjustment modules (002); the pressure-building module (001) and the two hydraulic adjustment modules (002) are detachably connected.

2. The hydraulic suspension system according to claim 1, characterized in that, The two hydraulic adjustment modules (002) are respectively disposed on opposite sides of the pressure building module (001).

3. The hydraulic suspension system according to claim 2, characterized in that, The pressure building module (001) includes a pressure building module base (10), and the hydraulic adjustment module (002) includes a hydraulic adjustment base (20); The pressure-building module base (10) is detachably connected to the two hydraulic adjustment bases (20) to supply fluid to the two shock absorbers via the two hydraulic adjustment bases (20).

4. The hydraulic suspension system according to claim 3, characterized in that, The two hydraulic adjustment bases (20) are located on opposite sides of the pressure building module base (10), and the two hydraulic adjustment bases (20) are symmetrically arranged about the pressure building module base (10).

5. The hydraulic suspension system according to claim 3 or 4, characterized in that, The hydraulic adjustment module (002) includes a stiffness adjustment component (30) and a damping adjustment component (40); The hydraulic adjustment base (20) includes: The first integration port (211) is adapted to integrate and connect the hydraulic adjustment base (20) with the stiffness adjustment component (30); The second integration port (212) is adapted to integrate and connect the hydraulic adjustment base (20) with the damping adjustment assembly (40); The hydraulic adjustment base (20) is provided with a first pipeline (221), which is adapted to connect the stiffness adjustment component (30), the damping adjustment component (40) and the corresponding shock absorber.

6. The hydraulic suspension system according to claim 5, characterized in that, The hydraulic regulating module (002) includes a first control valve assembly (50); The hydraulic adjustment base (20) also includes: The third integration port (213) is adapted to integrate the hydraulic adjustment base (20) with the first control valve assembly (50), the first control valve assembly (50) being adapted to control the on / off state of the stiffness adjustment assembly (30), the damping adjustment assembly (40) and the corresponding shock absorber.

7. The hydraulic suspension system according to claim 6, characterized in that, The first pipeline (221) includes a main pipeline, which includes a first end and a second end opposite to each other. The first end is adapted to connect to the pressure building module base (10), and the second end is adapted to connect to the corresponding vibration damper. The stiffness adjustment assembly (30) includes a first accumulator (31); the first integration port (211) includes a first port (2111) connected to the main pipeline, the first port (2111) being adapted to integrate the hydraulic adjustment base (20) with the first accumulator (31).

8. The hydraulic suspension system according to claim 7, characterized in that, The section of the main pipeline located between the first port (2111) and the second port is the first main pipeline section; The first control valve assembly (50) includes a first control valve structure (51), and the third integration port (213) includes a second port (2131) located in the first main pipeline section and / or located between the main pipeline and the first port (2111), the second port (2131) being adapted to integrate the hydraulic regulating base (20) with the first control valve structure (51).

9. The hydraulic suspension system according to claim 8, characterized in that, The stiffness adjustment assembly (30) further includes a second accumulator (32); the first integration port (211) further includes a third port (2112) connected to the first main pipeline section, the third port (2112) being adapted to integrate the hydraulic adjustment base (20) with the second accumulator (32).

10. The hydraulic suspension system according to claim 9, characterized in that, The section of the first main pipeline located between the third port (2112) and the second port is the first main pipeline sub-section; The first control valve assembly (50) further includes a second control valve structure (52), and the third integration port (213) includes a fourth port (2132) located in the first main pipeline subsection and / or located between the main pipeline and the third port (2112), the fourth port (2132) being adapted to integrate the hydraulic regulating base (20) with the second control valve structure (52).

11. The hydraulic suspension system according to claim 10, characterized in that, The first control valve structure (51) includes a first control valve (511) and a second control valve (512); There are two second ports (2131). One second port (2131) is located in the first main pipeline section and between the third port (2112) and the first port (2111). The other second port (2131) is located between the main pipeline and the first port (2111). The two second ports (2131) are used to integrate the hydraulic regulating base (20) with the first control valve (511) and to integrate the hydraulic regulating base (20) with the second control valve (512), respectively.

12. The hydraulic suspension system according to claim 10, characterized in that, The stiffness adjustment assembly (30) further includes a third accumulator (33); the first integration port (211) further includes a fifth port (2113) connected to the first main pipeline section, the fifth port (2113) being adapted to integrate the hydraulic adjustment base (20) with the third accumulator (33).

13. The hydraulic suspension system according to claim 6, characterized in that, The hydraulic regulating base (20) is provided with a first recess corresponding to each port in the third integrated port (213), and the first recess is used to accommodate the control valve of the first control valve assembly (50).

14. The hydraulic suspension system according to claim 7, characterized in that, The second integration port (212) includes a sixth port (2121) and a seventh port (2122) located on the main pipeline. The sixth port (2121) and the seventh port (2122) are adapted to integrate the hydraulic adjustment base (20) with both ends of the damping adjustment assembly (40).

15. The hydraulic suspension system according to claim 14, characterized in that, The damping adjustment assembly (40) includes a damping double valve (41), the sixth port (2121) is adapted to connect one end of the damping double valve (41), and the seventh port (2122) is adapted to connect the other end of the damping double valve (41).

16. The hydraulic suspension system according to claim 5, characterized in that, The hydraulic adjustment base (20) is provided with a second recess at the position corresponding to the second integration port (212), and the second recess is used to accommodate the damping adjustment component (40).

17. The hydraulic suspension system according to claim 9, characterized in that, The hydraulic adjustment base (20) includes a first side (20a) and a second side (20b) connected to each other. The first side (20a) is connected to the pressure building module base (10), and the first port (2111) and the second integration port (212) are located on the first side (20a); the second port (2131) and the third port (2112) are located on the second side (20b).

18. The hydraulic suspension system according to claim 17, characterized in that, The hydraulic adjustment base (20) also includes a third side (20c), which is connected to both the first side (20a) and the second side (20b), and the third integration port (213) is disposed on the third side (20c).

19. The hydraulic suspension system according to claim 6, characterized in that, The pressure building module base (10) includes: The fourth integration port (111) is suitable for integrating and connecting the hydraulic adjustment base (20) with the pressure building module base (10); The pressure building module base (10) is also provided with a second pipeline (12), which is adapted to supply or return liquid to the two first pipelines (221).

20. The hydraulic suspension system according to claim 19, characterized in that, It also includes a liquid supply system, which includes a liquid storage device (60); the second pipeline (12) includes a liquid supply pipeline (121), which includes a third end and a fourth end opposite to each other; The third end is adapted to connect to the liquid storage device (60), and the fourth end is adapted to connect to the two first pipelines (221).

21. The hydraulic suspension system according to claim 20, characterized in that, The pressure-building module (01) further includes a pressure-building device (70), and the pressure-building module base (10) further includes: The fifth integrated port (112) is provided in the liquid supply pipeline (121), and the fifth integrated port (112) is adapted to integrate and connect the pressure building module base (10) and the pressure building device (70).

22. The hydraulic suspension system according to claim 21, characterized in that, The pressure building module base (10) also includes: The sixth integrated port (113) is provided in the liquid supply pipeline (121) and located between the fourth end and the fifth integrated port (112). The sixth integrated port (113) is adapted to integrate and connect the pressure building module base (10) and the return module (80).

23. The hydraulic suspension system according to claim 22, characterized in that, The sixth integrated port (113) includes an inlet port (1131), a return port (1132), and a common port (1133); The liquid inlet port (1131) and the common port (1133) are connected to the liquid supply pipeline (121); The second pipeline (12) further includes a return pipeline (122), one end of which is connected to the return port (1132), and the other end is adapted to be connected to the liquid storage device (60).

24. The hydraulic suspension system according to claim 23, characterized in that, The pressure building module base (10) also includes: The seventh integrated port (114) is connected to a portion of the liquid supply line (121) between the common port (1133) and the fourth end. The seventh integrated port (114) is adapted to integrate the pressure building module base (10) with the voltage accumulator (90).

25. The hydraulic suspension system according to claim 21, characterized in that, The pressure building module base (10) is also provided with an installation cavity, which is located in the portion of the liquid supply pipeline (121) between the fifth integrated port (112) and the third end; The single-axis integrated module (1) further includes a filter assembly (100), which is detachably disposed within the mounting cavity.

26. The hydraulic suspension system according to claim 24, characterized in that, The single-axis integrated module (1) further includes an attitude control module (110), which is located between the two first pipelines (221) and the second pipeline (12); The attitude control module (110) can switch between a first state, a second state, and a third state; When the attitude control module (110) is in the first state, the second pipe (12) is connected to a first pipe (221), and the second pipe (12) is disconnected from the other first pipe (221); When the attitude control module (110) is in the second state, the second pipe (12) is connected to the other first pipe (221), and the second pipe (12) is disconnected from the first pipe (221); When the attitude control module (110) is in the third state, the second pipeline (12) is connected to both first pipelines (221).

27. The hydraulic suspension system according to claim 26, characterized in that, The single-axis integrated module (1) further includes a valve block (120), and the pressure building module base (10) further includes an eighth integrated port. The eighth integrated port is located at the fourth end of the liquid supply pipeline (121), and the eighth integrated port is adapted to integrate and connect the valve block (120) with the pressure building module base (10). The attitude control module (110) includes a third pipeline (130) and a second control valve assembly (140); The third pipeline (130) is located inside the valve block (120) and is connected between the two first pipelines (221) and the second pipeline (12). The second control valve assembly (140) is located in the third pipeline (130).

28. The hydraulic suspension system according to claim 27, characterized in that, The third pipeline (130) includes a first pipeline section (1301) and a second pipeline section (1302) connected to each other; the first pipeline section (1301) is located between the second pipeline (12) and a first pipeline (221), and the second pipeline section (1302) is located between the second pipeline (12) and another first pipeline (221); The second control valve assembly (140) is adapted to realize independent on / off control of the first pipeline section (1301) and the second pipeline section (1302).

29. The hydraulic suspension system according to claim 28, characterized in that, The first pipeline section (1301) includes a first pipeline section (130A) and a second pipeline section (130B), and the second pipeline section (1302) includes a third pipeline section (130C) and a fourth pipeline section (130D); The first pipeline section (130A) and the third pipeline section (130C) are connected to the second pipeline (12) and are the same pipeline section. The second pipeline section (130B) is connected between the first pipeline (221) and the first pipeline section (130A). The fourth pipeline section (130D) is connected between the other first pipeline (221) and the first pipeline section (130A). The second control valve assembly (140) includes a third control valve (1401) and a fourth control valve (1402), wherein the third control valve (1401) is located in the second pipeline section (130B) and the fourth control valve (1402) is located in the fourth pipeline section (130D).

30. The hydraulic suspension system according to claim 29, characterized in that, The second control valve assembly (140) further includes a fifth control valve (1403), which is located in the first pipeline section (130A).

31. The hydraulic suspension system according to claim 30, characterized in that, At least a portion of the third pipeline section (130C) and the fourth pipeline section (130D) extend to the pressure-building module base (10) and connect to the fourth integration port (111).

32. The hydraulic suspension system according to claim 31, characterized in that, The valve block (120) is provided with a third sink (1201), and the second control valve assembly (140) is disposed in the third sink (1201).

33. The hydraulic suspension system according to claim 32, characterized in that, The valve block (120) includes a valve block body (1202) and a cover (1203). The second control valve assembly (140) is disposed inside the valve block body (1202). The cover (1203) is disposed on the side of the valve block body (1202) away from the pressure building module base (10) and covers the opening of the third sink (1201).

34. The hydraulic suspension system according to claim 33, characterized in that, The pressure building module base (10) includes a fourth side (10a) and a fifth side (10b) facing each other, and the fourth integration port (111) and the eighth integration port are respectively located on the fourth side (10a) and the fifth side (10b).

35. The hydraulic suspension system according to claim 34, characterized in that, The single-axis integrated module (1) also includes a circuit element (150), which is electrically connected to the pressure building device (70), the first control valve assembly (50), and the second control valve assembly (140).

36. A vehicle, characterized in that, Includes the hydraulic suspension system (03) as described in any one of claims 1-35.

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