Suspension system and vehicle

Abstract

The invention discloses a suspension system and a vehicle. The suspension system comprises a hydraulic assembly and at least one shock absorption assembly, each shock absorption assembly corresponds to one first oil way (10) and one second oil way (20), each shock absorption assembly comprises a first shock absorber (40) and a second shock absorber (50), the first shock absorber (40) is provided with a first upper cavity (41) and a first lower cavity (42), and the second shock absorber (50) is provided with a second upper cavity (51) and a second lower cavity (52); the first oil way (10) is connected with at least one first energy accumulator (60), the first upper cavity (41) and the second upper cavity (51) are communicated through the first oil way (10), the second oil way (20) is connected with at least one second energy accumulator (70), the first lower cavity (42) and the second lower cavity (52) are communicated through the second oil way (20), and the hydraulic assembly is communicated with the first oil way (10) and the second oil way (20). The hydraulic assembly is used for mutually transferring oil in the first oil way (10) and oil in the second oil way (10). The arrangement space occupied by the suspension system is small, and the adjusting efficiency is high.

Description

Suspension system and vehicle Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a suspension system and a vehicle. Background Art

[0002] As the most common means of transportation, automobiles are increasingly valued for their comfort and safety. The suspension system, a crucial component in ensuring vehicle safety and comfort, primarily transmits force and torque between the wheels and the vehicle frame, cushions impact forces transmitted to the frame or body from uneven road surfaces, and reduces resulting vibrations.

[0003] In the prior art, the suspension system is generally an air suspension, which occupies a large space, has a poor shock absorption effect, and is less efficient in adjusting the vehicle body height.

[0004] Summary of the Invention

[0005] The present application provides a suspension system that occupies a small space, has a good shock absorption effect and is highly efficient in adjusting the height of the vehicle body.

[0006] In the first aspect, the present application provides a suspension system, which may include a hydraulic component and at least one group of shock-absorbing components, each group of shock-absorbing components corresponding to a first oil circuit and a second oil circuit, one end of the shock-absorbing component is used to be installed on the body of the vehicle, and the other end of the shock-absorbing component is used to be installed on the wheel of the vehicle, each group of shock-absorbing components includes a first shock absorber and a second shock absorber, the first shock absorber has a first upper chamber and a first lower chamber, and the second shock absorber has a second upper chamber and a second lower chamber; at least one first accumulator is connected to the first oil circuit, and the first oil circuit connects the first upper chamber and the second upper chamber, at least one second accumulator is connected to the second oil circuit, and the second oil circuit connects the first lower chamber and the second lower chamber, the hydraulic component is connected to the first oil circuit and the second oil circuit, and the hydraulic component is used to transfer the oil in the first oil circuit and the oil in the second oil circuit to each other. Specifically, the hydraulic assembly controls the amount of oil in the first and second oil circuits, thereby controlling the height of the first and second shock absorbers to adjust the vehicle body height. Hydraulic height adjustment offers a high adjustment rate and eliminates the need for bulky components such as compressors and air tanks, thereby reducing the space required for the suspension system. Furthermore, when vertical forces act on the first and / or second shock absorbers, the first and second accumulators act to suppress them, thereby enhancing the suspension system's damping capacity.

[0007] The number of the first accumulator and the second accumulator can be adjusted according to actual needs and is not specifically limited here.

[0008] In one possible embodiment, to adjust the flow rate of oil in the first and second oil circuits, the suspension system may further include a first adjustment assembly and a second adjustment assembly, wherein the first adjustment assembly is disposed in the first oil circuit and the second adjustment assembly is disposed in the second oil circuit. Specifically, the first adjustment assembly may include a first damping adjustment valve and / or at least one first throttle valve, and the second adjustment assembly may include a second damping adjustment valve and / or at least one second throttle valve.

[0009] In one possible embodiment, to detect the oil pressure in the first oil circuit and / or the second oil circuit, the suspension system may further include an oil pressure sensor. Two oil pressure sensors may be provided, one for detecting the oil pressure in the first oil circuit and the other for detecting the oil pressure in the second oil circuit. Alternatively, a single oil pressure sensor may be provided, one for detecting the oil pressure in the first oil circuit or the second oil circuit. The oil pressure sensor may also detect the force applied by the shock absorber.

[0010] In one possible embodiment, at least one set of shock absorbing assemblies may include a single shock absorbing assembly, which may be mounted on the front axle or the rear axle of the vehicle. The hydraulic assembly may include a first electric motor and a first bidirectional hydraulic motor, the first bidirectional hydraulic motor being connected to the first electric motor. One outlet of the first bidirectional hydraulic motor is connected to a first oil circuit corresponding to the shock absorbing assembly, and the other outlet of the first bidirectional hydraulic motor is connected to a second oil circuit corresponding to the shock absorbing assembly. With this arrangement, the height of the vehicle body relative to the front axle or rear axle can be adjusted, and the pitch and tilt attitude of the vehicle body can be suppressed.

[0011] In one possible embodiment, at least one set of shock absorbing assemblies may include a first shock absorbing assembly and a second shock absorbing assembly. The first shock absorbing assembly may be provided on the front axle of the vehicle, and the second shock absorbing assembly may be provided on the rear axle of the vehicle. One outlet of the hydraulic assembly is connected to a first oil circuit corresponding to the first shock absorbing assembly and a first oil circuit corresponding to the second shock absorbing assembly, respectively. Another outlet of the hydraulic assembly is connected to a second oil circuit corresponding to the first shock absorbing assembly and a second oil circuit corresponding to the second shock absorbing assembly, respectively. In this manner, the height of the entire vehicle body, or the position corresponding to the vehicle body and the front axle, or the position corresponding to the vehicle body and the rear axle can be adjusted.

[0012] In the above embodiment, the hydraulic assembly may include a second motor, a second bidirectional hydraulic motor, a first intermediate oil circuit, a second intermediate oil circuit, a first control valve, and a second control valve. The second bidirectional hydraulic motor is drivingly connected to the second motor. The first intermediate oil circuit connects the first port of the first control valve to the first port of the second control valve, and the first intermediate oil circuit connects to an outlet of the second bidirectional hydraulic motor. The second intermediate oil circuit connects the second port of the first control valve to the second port of the second control valve, and the second intermediate oil circuit connects to an outlet of the second bidirectional hydraulic motor. The third port of the first control valve connects to the first oil circuit corresponding to the first shock absorber assembly, the fourth port of the first control valve connects to the second oil circuit corresponding to the first shock absorber assembly, the third port of the second control valve connects to the first oil circuit corresponding to the second shock absorber assembly, and the fourth port of the second control valve connects to the second oil circuit corresponding to the second shock absorber assembly. Specifically, when adjusting the height of the entire vehicle body, or the position corresponding to the vehicle body and the front axle, or the position corresponding to the vehicle body and the rear axle, the adjustment can be achieved by controlling the rotation direction of the second bidirectional hydraulic motor and controlling the opening and closing of each port on the first and second control valves. The first and second control valves can both be two-position, four-way valves.

[0013] In one possible embodiment, at least one shock absorbing assembly may include a first shock absorbing assembly and a second shock absorbing assembly. The first shock absorber in the first shock absorbing assembly is disposed on the front axle of the vehicle, and the second shock absorber in the first shock absorbing assembly is disposed on the rear axle of the vehicle. The first shock absorber in the second shock absorbing assembly is disposed on the front axle of the vehicle, and the second shock absorber in the second shock absorbing assembly is disposed on the rear axle of the vehicle. This means that the first shock absorbing assembly is disposed on the left side of the vehicle, and the second shock absorbing assembly is disposed on the right side of the vehicle. In this manner, the height of the left and / or right side of the vehicle body can be adjusted, and the posture of the left and right sides of the vehicle body can be adjusted.

[0014] The hydraulic assembly may include a first hydraulic structure and a second hydraulic structure, wherein one outlet of the first hydraulic structure is connected to the first oil circuit in the first shock absorber assembly, and another outlet of the first hydraulic structure is connected to the second oil circuit in the first shock absorber assembly, one outlet of the second hydraulic structure is connected to the first oil circuit in the second shock absorber assembly, and another outlet of the second hydraulic structure is connected to the second oil circuit in the second shock absorber assembly. The first hydraulic structure may include a third motor and a third bidirectional hydraulic motor, wherein the third motor drives the third bidirectional hydraulic motor to rotate to adjust the amount of oil in the first and second oil circuits corresponding to the first shock absorber assembly, thereby adjusting the height of the left side of the vehicle body; the second hydraulic structure may include a fourth motor and a fourth bidirectional hydraulic motor, wherein the fourth motor drives the fourth bidirectional hydraulic motor to rotate to adjust the amount of oil in the first and second oil circuits corresponding to the second shock absorber assembly, thereby adjusting the height of the left side of the vehicle body.

[0015] In a second aspect, the present application further provides a vehicle comprising a vehicle body, wheels, and a suspension system according to any of the above technical solutions, wherein the suspension system is disposed between the vehicle body and the wheels. A vehicle having such a suspension system can achieve good shock absorption, and can also improve vehicle comfort and handling stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] FIG1 is a schematic structural diagram of a suspension system provided in an embodiment of the present application;

[0017] FIG2 is another structural schematic diagram of a suspension system provided in an embodiment of the present application;

[0018] FIG3 is another structural schematic diagram of a suspension system provided in an embodiment of the present application;

[0019] FIG4 is another structural schematic diagram of a suspension system provided in an embodiment of the present application;

[0020] FIG5 is another structural schematic diagram of a suspension system provided in an embodiment of the present application.

[0021] Reference numerals:

[0022] 1-body; 2-wheel; 10, 10a, 10b, 10c, 10d-first oil circuit; 20, 20a, 20b, 20c, 20d-second oil circuit; 30-hydraulic assembly; 31-first motor; 32-first bidirectional hydraulic motor; 33-second motor; 34-second bidirectional hydraulic motor; 35-first intermediate oil circuit; 36-second intermediate oil circuit; 37-first control valve; 38-second control valve; 301-third motor; 302-third bidirectional hydraulic motor; 303-fourth motor; 304-fourth bidirectional hydraulic motor; 40, 40a, 40b, 40c, 40d-first shock absorber; 41, 41a, 4 1b, 41c-first upper chamber; 42, 42a, 42b, 42c-first lower chamber; 43-first piston; 44-first piston rod; 50, 50a, 50b, 50c, 50d-second shock absorber; 51, 51a, 51b, 51c-second upper chamber; 52, 52a, 52b, 52c-second lower chamber; 53-second piston; 54-second piston rod; 60-first accumulator; 70-second accumulator; 80-first adjusting assembly; 81-first damping regulating valve; 82-first throttle valve; 90-second adjusting assembly; 91-second damping regulating valve; 92-second throttle valve; 100-oil pressure sensor. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of this application clearer, this application will be further described in detail below with reference to the accompanying drawings.

[0024] In the prior art, the suspension of a vehicle is generally an air suspension, which includes a compressor and an air tank, resulting in the air suspension occupying a large layout space. Moreover, the air suspension is less efficient in adjusting the height between the vehicle body and the chassis.

[0025] To this end, an embodiment of the present application provides a suspension system that can improve the adjustment effect and reduce the occupied space.

[0026] In order to make the purpose, technical solutions and advantages of the present application clearer, the optical device provided by the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] The terms used in the following embodiments are only for the purpose of describing specific embodiments and are not intended to limit the present application. As used in the specification and appended claims of this application, the singular expressions "a", "an", "said", "above", "the", and "this" are intended to also include expressions such as "one or more", unless the context clearly indicates otherwise.

[0028] References to "one embodiment" or "some embodiments" in this specification mean that a particular feature, structure, or characteristic described in conjunction with that embodiment is included in one or more embodiments of the present application. Thus, phrases such as "in one embodiment," "in some embodiments," "in other embodiments," and "in yet other embodiments" appearing in various places in this specification do not necessarily refer to the same embodiment, but rather mean "one or more but not all embodiments," unless otherwise specifically emphasized. The terms "including," "comprising," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0029] The present application provides a suspension system, primarily for use in vehicles. A vehicle may include a body and a chassis, with the body mounted on the chassis and the suspension system disposed between the two. The chassis is provided with four wheels. Vehicles equipped with this suspension system exhibit enhanced comfort and stability. An elastic member may also be disposed between the chassis and the body, positioned near the suspension system to enhance shock absorption. Specifically, the elastic member may be, but is not limited to, a spring or an air spring.

[0030] 1 , the suspension system may include a hydraulic assembly and at least one set of shock absorbing assemblies, one end of the shock absorbing assembly being mounted on a vehicle body 1 and the other end being mounted on a wheel 2 of the vehicle. Each set of shock absorbing assemblies corresponds to a first oil circuit 10 and a second oil circuit 20 . The first oil circuit 10 is connected to one outlet of the hydraulic assembly 30 , and the second oil circuit 20 is connected to another outlet of the hydraulic assembly 30 . The hydraulic assembly 30 can transfer oil in the first oil circuit 10 and the second oil circuit 20 . Each set of shock absorbing assemblies may include a first shock absorber 40 and a second shock absorber 50 . The first shock absorber 40 has a first upper chamber 41 and a first lower chamber 42 , and the second shock absorber 50 has a second upper chamber 51 and a second lower chamber 52 . The first oil circuit 10 connects the first upper chamber 41 with the second upper chamber 51 , and at least one first accumulator 60 may be provided on the first oil circuit 10 . The second oil circuit 20 connects the first lower chamber 42 with the second lower chamber 52 , and at least one second accumulator 70 may be provided on the second oil circuit 20 . Specifically, the hydraulic assembly can transfer and redistribute the oil in the first upper chamber 41, the second upper chamber 51, and the first oil circuit 10 for connecting the first upper chamber 41 and the second upper chamber 51, and the oil in the first lower chamber 42, the second lower chamber 52, and the second oil circuit 20 for connecting the first lower chamber 42 and the second lower chamber 52, so as to control the height of the first shock absorber 40 and the second shock absorber 50, thereby adjusting the height of the vehicle body; and when the first shock absorber 40 and / or the second shock absorber 50 are subjected to a vertical downward force When a force is applied to the first and second shock absorbers 40 and 50, at least a portion of the oil in the first lower chamber 42 and / or the second lower chamber 52 enters the second accumulator 70. The second accumulator 70 can suppress the vertical compression of the first shock absorber 40 and / or the second shock absorber 50, thereby suppressing the vertical movement of the vehicle body and improving the shock absorption capability. When the first and second shock absorbers 40 and 50 are subjected to a vertical upward force, the first accumulator 60 can also suppress the vertical compression of the first and second shock absorbers 40 and / or 50. By controlling the amount of oil in the first and second oil circuits 10 and 20 through the hydraulic assembly, the vehicle body height can be adjusted quickly, and the hydraulic circuits occupy less space, thereby improving vehicle comfort.

[0031] The first shock absorber 40 may include a first piston 43 and a first piston rod 44. The first end of the first piston rod 44 is slidably disposed within the first piston 43. The first end of the first piston rod 44 divides the interior of the first piston 43 into a relatively isolated first upper chamber 41 and a first lower chamber 42. The second end of the first piston rod 44 is connected to the vehicle body 1 or the wheel 2. By controlling the amount of oil in the first upper chamber 41 and / or the first lower chamber 42, the movement trajectory of the first piston rod 44 can be controlled, thereby adjusting the height of the vehicle body.

[0032] The second shock absorber 50 may include a second piston 53 and a second piston rod 54. The second end of the second piston rod 54 is slidably disposed within the second piston 53. The second end of the second piston rod 54 divides the interior of the second piston 53 into a relatively isolated second upper chamber 51 and second lower chamber 52. The second end of the second piston rod 54 is connected to the vehicle body 1 or the wheel 2. By controlling the amount of oil in the second upper chamber 51 and / or the second lower chamber 52, the movement trajectory of the second piston rod 54 can be controlled, thereby adjusting the height of the vehicle body.

[0033] Continuing to refer to Figure 1, the two wheels 2 in Figure 1 are two front wheels or two rear wheels. In the specific implementation process, when the shock absorber assembly is a group, the first shock absorber 40 and the second shock absorber 50 included in the shock absorber assembly can be respectively arranged between the front wheels at both ends and the vehicle body, that is, the shock absorber assembly is arranged on the front axle of the vehicle; or, the first shock absorber 40 and the second shock absorber 50 included in the shock absorber assembly can be respectively arranged between the two rear wheels and the vehicle body, that is, the shock absorber assembly is arranged on the rear axle of the vehicle. At this time, the hydraulic assembly 30 may include a first motor 31 and a first bidirectional hydraulic motor 32 connected to the first motor 31, the first bidirectional hydraulic motor 32 is connected to the first oil circuit 10 and the second oil circuit 20, and a first adjusting assembly 80 and two first accumulators 60 may also be provided on the first oil circuit 10 in which the first upper chamber 41 of the first shock absorber 40 is connected to the second upper chamber 51 of the second shock absorber 50, and the first adjusting assembly 80 may include two first damping adjusting valves 81 and two first throttle valves 82, two The first damping regulating valve 81 can be respectively arranged at the outlet of the first upper chamber 41 and the outlet of the second upper chamber 51. The first damping regulating valve 81 can better control the flow of oil in the first oil circuit 10. The two first throttle valves 82 are respectively arranged at the outlets of the two first accumulators 60, which can play a buffering role for the first accumulator 60. A second adjusting assembly 90 and two second accumulators 70 can also be arranged on the second oil circuit 20 connected to the first lower chamber 42 of the first shock absorber 40 and the second lower chamber 52 of the second shock absorber 50, and the second adjusting assembly 90 may include two second damping regulating valves 91 and two second throttle valves 92. The two second damping regulating valves 91 can be respectively arranged at the outlet of the first lower chamber 42 and the outlet of the second lower chamber 52. The second damping regulating valve 91 can better control the flow of oil in the second oil circuit. The two second throttle valves 92 are respectively arranged at the outlets of the two second accumulators 70, which can play a buffering role for the second accumulator 70.In this setting, by controlling the first bidirectional hydraulic motor 32, the amount of oil in the first oil circuit 10 and the second oil circuit 20 can be adjusted, thereby adjusting the height of the front axle or rear axle of the vehicle; specifically, the first bidirectional hydraulic motor 32 can quickly and quantitatively pump the oil in the first oil circuit 10 into the second oil circuit 20. The reduction in the amount of oil in the first oil circuit 10, that is, the reduction in the amount of oil in the first upper chamber 41 and the second upper chamber 51, causes a pressure drop. The increase in the amount of oil in the second oil circuit 20 causes a pressure increase, and the pressure difference will act on the first shock absorber 40 and the second shock absorber 50, so that the first shock absorber 40 and the second shock absorber 50 is stretched, thereby generating thrust on the vehicle body and wheels to increase the height of the vehicle body; the first bidirectional hydraulic motor 32 can also be used to quickly and quantitatively pump the oil in the second oil circuit 20 into the first oil circuit 10. The reduction in the amount of oil in the second oil circuit 20, that is, the reduction in the amount of oil in the first lower chamber 42 and the second lower chamber 52, causes the pressure to drop. The increase in the amount of oil in the first oil circuit 10 causes the pressure to rise, and the pressure difference will act on the first shock absorber 40 and the second shock absorber 50 to compress the first shock absorber 40 and the second shock absorber 50, thereby generating tension on the vehicle body and wheels to lower the height of the vehicle body.

[0034] When the vehicle undergoes large vertical vibration or large pitching motion, the first oil circuit 10 or the second oil circuit 20 is in a compressed state. When the first oil circuit 10 is compressed, the oil in the first oil circuit 10 will enter the two first accumulators 60. The oil flowing into the first accumulators 60 will compress the gas in the first accumulators 60 to form pressure, generating a reverse force. Similarly, when the second oil circuit 20 is compressed, the oil in the second oil circuit 20 will enter the two second accumulators 70. The oil flowing into the second accumulators 70 will compress the gas in the second accumulators 70 to form pressure, generating a reverse force, thereby suppressing the pitch and vertical postures, thereby improving the comfort and operational stability of the vehicle.

[0035] In the above embodiment, the number of the first damping regulating valve 81 in the first oil circuit 10 may be one, and the number of the second damping regulating valve 91 in the second oil circuit 20 may be one.

[0036] In order to detect the oil pressure in the first oil circuit 10 and the second oil circuit 20, an oil pressure sensor 100 may be provided in both the first oil circuit 10 and the second oil circuit 20. In the specific implementation process, the oil pressure sensor 100 may also be installed only in the first oil circuit 10 or the second oil circuit 20.

[0037] 2 , in a possible embodiment, when the shock absorbing assembly is a group, the first shock absorber 40 and the second shock absorber 50 included in the shock absorbing assembly can be respectively arranged between the front wheels at both ends and the vehicle body, that is, the shock absorbing assembly is arranged on the front axle of the vehicle; or the first shock absorber and the second shock absorber can be respectively arranged between the two rear wheels and the vehicle body, that is, the shock absorbing assembly is arranged on the rear axle of the vehicle. In this case, the hydraulic assembly 30 may include a first motor 31 and a first bidirectional hydraulic motor 32 connected to the first motor 31, the first bidirectional hydraulic motor 32 is connected to the first oil circuit 10 and the second oil circuit 20, and the first upper chamber 41 of the first shock absorber 40 is connected to the second shock absorber. A first accumulator 60 may also be provided on the first oil circuit 10 connected to the second upper chamber 51 on 50, and a second adjusting component 90 and a second accumulator 70 may also be provided on the second oil circuit 20 connected to the first lower chamber 42 of the first shock absorber 40 and the second lower chamber 52 on the second shock absorber 50, and the second adjusting component may include two second throttle valves 92, and the two second throttle valves 92 may be respectively provided at the outlet of the first lower chamber 42 and the outlet of the second lower chamber 52. When the second throttle valve 92 is specifically provided, the second throttle valve 92 may be calibrated to ensure the regulation of the oil in the second oil circuit 20.

[0038] In this embodiment, in order to detect the oil pressure in the first oil circuit 10 and the second oil circuit 20, an oil pressure sensor 100 can be provided in both the first oil circuit 10 and the second oil circuit 20. In the specific implementation process, the oil pressure sensor 100 can also be installed only in the first oil circuit 10 or the second oil circuit 20.

[0039] 3 , in a possible embodiment, the shock absorber assembly is a group, and the first shock absorber 40 and the second shock absorber 50 in the shock absorber assembly can be respectively arranged between the front wheels at both ends and the vehicle body, that is, the shock absorber assembly is arranged on the front axle of the vehicle; or the first shock absorber and the second shock absorber can be respectively arranged between the two rear wheels and the vehicle body, that is, the shock absorber assembly is arranged on the rear axle of the vehicle. In this case, the hydraulic assembly 30 may include a first motor 31 and a first bidirectional hydraulic motor 32 connected to the first motor 31, the first bidirectional hydraulic motor 32 is connected to the first oil circuit 10 and the second oil circuit 20, and the first shock absorber 31 is connected to the first oil circuit 10 and the second oil circuit 20. A first adjusting assembly 80 and two first accumulators 60 may also be provided on the first oil circuit 10 that connects the first upper chamber 41 of the shock absorber 40 with the second upper chamber 51 on the second shock absorber 50. The first adjusting assembly 80 may include four first throttle valves 82, two of which are respectively arranged at the outlet of the first upper chamber 41 and the outlet of the second upper chamber 51 to control the flow rate of the oil in the first oil circuit 10; the other two first throttle valves 82 are respectively arranged at the outlets of the two first accumulators 60, which can serve as a buffer for the first accumulator 60. Similarly, a second adjusting assembly 90 and two second accumulators 70 may also be provided on the second oil circuit 20 connecting the first lower chamber 42 of the first shock absorber 40 and the second lower chamber 52 on the second shock absorber 50, and the second adjusting assembly 90 may include four second throttle valves 92, of which two second throttle valves 92 are respectively arranged at the outlet of the first lower chamber 42 and the outlet of the second lower chamber 52 to control the flow rate of the oil in the second oil circuit 20; the other two second throttle valves 92 are respectively arranged at the outlets of the two second accumulators 70, which can serve as a buffer for the second accumulator 70.

[0040] Referring to Figure 4, in a possible embodiment, at least one group of shock-absorbing assemblies may include a first shock-absorbing assembly and a second shock-absorbing assembly. The first shock-absorbing assembly may be arranged on the front axle of the vehicle, and the second shock-absorbing assembly may be arranged on the rear axle of the vehicle. The first oil circuit 10a corresponding to the first shock-absorbing assembly and the first oil circuit 10b corresponding to the second shock-absorbing assembly are both connected to one outlet of the hydraulic assembly, and the second oil circuit 20a corresponding to the first shock-absorbing assembly and the second oil circuit 20b corresponding to the second shock-absorbing assembly are both connected to the other outlet of the hydraulic assembly. More specifically, the first shock absorber 40a in the first shock absorber assembly can be arranged between the left wheel of the front axle and the vehicle body, the second shock absorber 50a in the first shock absorber assembly can be arranged between the right wheel of the front axle and the vehicle body, the first shock absorber 40b in the second shock absorber assembly can be arranged between the left wheel of the rear axle and the vehicle body, and the second shock absorber 50b in the second shock absorber assembly can be arranged between the right wheel of the rear axle and the vehicle body. The first upper chamber 41a of the first shock absorber 40a in the first shock absorber assembly and the second upper chamber 51a of the second shock absorber 50a in the first shock absorber assembly are connected through the first oil passage 10a corresponding to the first shock absorber assembly, and the first lower chamber 42a of the first shock absorber 40a in the first shock absorber assembly and the second lower chamber 42a of the second shock absorber 50a in the first shock absorber assembly are connected. The second lower chamber 52a of the shock absorber 50a is connected through the second oil circuit 20a corresponding to the first shock absorber assembly; similarly, the first upper chamber 41b of the first shock absorber 40b in the second shock absorber assembly and the second upper chamber 51b of the second shock absorber 50b in the first shock absorber assembly are connected through the first oil circuit 10b corresponding to the second shock absorber assembly, the first lower chamber 42b of the first shock absorber 40b in the second shock absorber assembly and the second lower chamber 52b of the second shock absorber 50b in the second shock absorber assembly are connected through the second oil circuit 20b corresponding to the second shock absorber assembly, and the first oil circuit 10a and the second oil circuit 20a corresponding to the first shock absorber assembly can be connected with the first oil circuit 10b and the second oil circuit 20b corresponding to the second shock absorber assembly through a hydraulic assembly. By controlling the hydraulic assembly, the front axle of the vehicle body can be raised or lowered individually, the rear axle of the vehicle body can be raised or lowered individually, and the entire vehicle body can be raised or lowered. The first accumulator, the second accumulator, the first adjustment assembly and the second adjustment assembly are arranged in the first oil circuit and the second oil circuit in the first shock absorber assembly and / or the second shock absorber assembly, which can also suppress the vertical or pitch of the vehicle body.

[0041] 4 , a1 in FIG4 is the first port of the first control valve, a2 is the second port of the first control valve, a3 is the third port of the first control valve, and a4 is the fourth port of the first control valve; b1 is the first port of the second control valve, b2 is the second port of the second control valve, b3 is the third port of the second control valve, and b4 is the fourth port of the second control valve; the hydraulic assembly may include a second motor 33, a second bidirectional hydraulic motor 34, a first intermediate oil circuit 35, a second intermediate oil circuit 36, a first control valve 37, and a second control valve 38. The first port a1 of the first control valve 37 and the first port b1 of the second control valve 38 are connected through the first intermediate oil circuit 35, and the first intermediate oil circuit 35 is also connected to an outlet of the second bidirectional hydraulic motor 34. The second port a2 of the first control valve 37 and the second port b2 of the second control valve 38 are connected through the second middle oil circuit 36, and the second middle oil circuit 36 ​​is connected to the other outlet of the second bidirectional hydraulic motor 34, the third port a3 of the first control valve 37 is connected to the first oil circuit 10a corresponding to the first shock absorber assembly, the fourth port a4 of the first control valve 37 is connected to the second oil circuit 20a corresponding to the first shock absorber assembly, the third port b3 of the second control valve 38 is connected to the first oil circuit 10b corresponding to the second shock absorber assembly, and the fourth port b4 of the second control valve 38 is connected to the second oil circuit 20b corresponding to the second shock absorber assembly.

[0042] When it is necessary to raise the position corresponding to the vehicle body and the front axle separately, the first control valve 37 can be controlled to be connected and the second control valve 38 can be disconnected, that is, the first port a1 of the first control valve 37 is connected to the third port a3 of the first control valve 37, and the second port a2 of the first control valve 37 is connected to the fourth port a4 of the first control valve 37. Under the action of the second bidirectional hydraulic motor 34, the oil in the first oil circuit 10a corresponding to the first shock absorber assembly can be quickly and quantitatively supplied through the third port a3, the first port a1 and the first intermediate oil circuit 35 of the first control valve 37 to the second bidirectional hydraulic motor 34, and then through the second intermediate oil circuit 36, the second port a2 and the fourth port a4 of the first control valve 37 to the second oil circuit 20a corresponding to the first shock absorber assembly. In this way, the amount of oil in the first oil circuit 10a corresponding to the first shock absorber assembly decreases, that is, the amount of oil in the first upper chamber 41a of the first shock absorber 40a and the second upper chamber 51a of the second shock absorber 50a included in the first shock absorber assembly decreases, resulting in a pressure drop. The amount of oil in the second oil circuit 20a corresponding to the first shock absorber assembly increases, that is, the amount of oil in the first lower chamber 42a of the first shock absorber 40a and the second lower chamber 52a of the second shock absorber 50a included in the first shock absorber assembly increases, resulting in a pressure increase. The pressure difference will act on the first shock absorber 40a and the second shock absorber 50a in the first shock absorber assembly, causing the first shock absorber 40a and the second shock absorber 50a to expand, thereby generating thrust on the vehicle body and the wheels, thereby increasing the height of the vehicle body above the front axle.

[0043] When it is necessary to lower the position corresponding to the vehicle body and the front axle separately, the first control valve 37 is controlled to be connected and the second control valve 38 is disconnected, that is, the first port a1 of the first control valve 37 is connected to the third port a3 of the first control valve 37, and the second port a2 of the first control valve 37 is connected to the fourth port a4 of the first control valve 37. Under the action of the second bidirectional hydraulic motor 34, the oil in the second oil circuit 20a corresponding to the first shock absorber assembly can be quickly and quantitatively supplied to the second bidirectional hydraulic motor 34 through the fourth port a4 of the first control valve 37, the second port a2, and the second middle oil circuit 36, and then through the first middle oil circuit 35, the first control valve 37, and the second middle oil circuit 36. The first port a1 and the third port a3 of the first shock absorber assembly 7 enter the first oil circuit 10a corresponding to the first shock absorber assembly. In this way, the amount of oil in the second oil circuit 20a corresponding to the first shock absorber assembly decreases, that is, the amount of oil in the first lower chamber 42a and the second lower chamber 52a of the first shock absorber assembly decreases, resulting in a pressure drop. The increase in the amount of oil in the first oil circuit 10a corresponding to the first shock absorber assembly causes a pressure increase. The pressure difference will act on the first shock absorber 40a and the second shock absorber 50a in the first shock absorber assembly, causing the first shock absorber 40a and the second shock absorber 50a to be compressed, thereby generating a pulling force on the vehicle body and the wheels, thereby lowering the height of the vehicle body above the front axle.

[0044] When it is necessary to raise or lower the position corresponding to the vehicle body and the rear axle separately, the specific method is the same as raising or lowering the position corresponding to the vehicle body and the front axle separately, and will not be described in detail here.

[0045] When the vehicle body needs to be raised, both the first control valve 37 and the second control valve 38 need to be opened. The first port a1 of the first control valve 37 is connected to the third port a3 of the first control valve 37, the second port a2 of the first control valve 37 is connected to the fourth port a4 of the first control valve 37, the first port b1 of the second control valve 38 is connected to the third port b3 of the second control valve 38, and the second port b2 of the second control valve 38 is connected to the fourth port b4 of the second control valve 38. In this way, the oil in the first oil passage 10a corresponding to the first shock absorber assembly and the oil in the first oil passage 10b corresponding to the second shock absorber assembly can be driven by the second bidirectional hydraulic motor 34 to enter the second oil passage 20a of the first shock absorber assembly and the second oil passage 20b corresponding to the second shock absorber assembly, respectively. This causes the first shock absorber 40a and the second shock absorber 50a of the first shock absorber assembly, as well as the first shock absorber 40b and the second shock absorber 50b of the second shock absorber assembly, to expand, thereby generating thrust on the vehicle body and wheels, thereby raising the vehicle body. The method of lowering the overall height of the vehicle body is similar to the method of raising the height of the vehicle body. The oil in the second oil circuit 20a corresponding to the first shock absorber assembly and the oil in the second oil circuit 20b corresponding to the second shock absorber assembly can enter the first oil circuit 10a corresponding to the first shock absorber assembly and the first oil circuit 10b corresponding to the second shock absorber assembly under the action of the second bidirectional hydraulic motor 34.

[0046] The first control valve 37 and the second control valve 38 can both be two-position four-way valves.

[0047] 5 , in a possible embodiment, at least one group of shock-absorbing assemblies includes a first shock-absorbing assembly and a second shock-absorbing assembly, the first shock absorber 40c in the first shock-absorbing assembly may be arranged at the front axle of the vehicle (the left front wheel of the vehicle), the second shock absorber 50c in the first shock-absorbing assembly may be arranged at the rear axle of the vehicle (the left rear wheel of the vehicle), the first shock absorber 40d in the second shock-absorbing assembly may be arranged at the front axle of the vehicle (the right front wheel of the vehicle), and the second shock absorber 50d in the second shock-absorbing assembly may be arranged at the rear axle of the vehicle (the right rear wheel of the vehicle); the hydraulic assembly may include a first hydraulic structure and a second hydraulic structure, one outlet of the first hydraulic structure is connected to the first oil circuit 10c corresponding to the first shock-absorbing assembly, another outlet of the first hydraulic structure is connected to the second oil circuit 20c corresponding to the first shock-absorbing assembly, one outlet of the second hydraulic structure is connected to the first oil circuit 10d corresponding to the second shock-absorbing assembly, and another outlet of the second hydraulic structure is connected to the second oil circuit 20d corresponding to the second shock-absorbing assembly. Among them, the first hydraulic structure may include a third motor 301 and a third bidirectional hydraulic motor 302, and the second hydraulic structure may include a fourth motor 303 and a fourth bidirectional hydraulic motor 304; wherein, the first accumulator, the second accumulator, the first adjustment component and the second adjustment component arranged in the first oil circuit 10c and the second oil circuit 20c corresponding to the first shock absorber component, and / or the first oil circuit 10d and the second oil circuit 20d corresponding to the second shock absorber component can also play a role in suppressing the vertical or lateral posture of the vehicle body. At this time, the first adjustment component can be but is not limited to a first damping adjustment valve, and the second adjustment component can be but is not limited to a second damping adjustment valve.

[0048] When it is necessary to raise the position of the left side of the vehicle body alone, the third bidirectional hydraulic motor 302 can be used to quickly and quantitatively pump the oil in the first oil circuit 10c corresponding to the first shock absorber assembly into the second oil circuit 20c corresponding to the first shock absorber assembly, so that the amount of oil in the first oil circuit 10c corresponding to the first shock absorber assembly is reduced, that is, the amount of oil in the first upper chamber 41c of the first shock absorber 40c in the first shock absorber assembly and the second upper chamber 51c of the second shock absorber 50c in the first shock absorber assembly are reduced, resulting in a pressure drop, and the increase in the amount of oil in the second oil circuit 20c That is, the amount of oil in the first lower chamber 42c of the first shock absorber 40c included in the first shock absorber assembly and the second lower chamber 52c of the second shock absorber 50c increases, resulting in an increase in pressure. The pressure difference will act on the first shock absorber 40c and the second shock absorber 50c corresponding to the first shock absorber assembly to cause the first shock absorber 40c and the second shock absorber 50c to stretch, thereby generating thrust on the vehicle body and the wheels to increase the height of the left side of the vehicle body; similarly, the method for raising the position of the right side of the vehicle body separately is the same as the method for raising the position of the left side of the vehicle body separately, which will not be repeated here.

[0049] To adjust the height of both the left and right sides of the vehicle body simultaneously, the third bidirectional hydraulic motor 302 and the fourth bidirectional hydraulic motor 304 are driven simultaneously. To lower the left or right side of the vehicle body individually, or to lower both sides, the direction of the third bidirectional hydraulic motor 302 or the fourth bidirectional hydraulic motor 304 is simply adjusted.

[0050] When the vehicle undergoes large vertical vibration or large lateral movement, the first oil circuit 10c or the second oil circuit 20c corresponding to the first shock absorber assembly is in a compressed state, and / or the first oil circuit 10d or the second oil circuit 20d corresponding to the second shock absorber assembly is in a compressed state. When the first oil circuit 10c and / or the first oil circuit 10d is compressed, the oil in the first oil circuit 10c and / or the first oil circuit 10d will enter the two first accumulators, and the oil flowing into the first accumulator will compress the gas in the first accumulator to form pressure, generating a reverse force; similarly, when the second oil circuit 20c and / or the second oil circuit 20d is compressed, the oil in the second oil circuit 20c and / or the second oil circuit 20d will enter the two second accumulators, and the oil flowing into the second accumulator will compress the gas in the second accumulator to form pressure, generating a reverse force, thereby suppressing the lateral and vertical posture, thereby improving the comfort and operational stability of the vehicle.

[0051] The above are only specific embodiments of the present application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A suspension system, characterized in that: It includes a hydraulic assembly and at least one set of shock absorbing assemblies, and each set of the shock absorbing assemblies corresponds to a first oil circuit and a second oil circuit; One end of the shock absorbing assembly is used to be mounted on the body of the vehicle, and the other end of the shock absorbing assembly is used to be mounted on the wheel of the vehicle. Each set of the shock absorbing assembly includes a first shock absorber and a second shock absorber. The first shock absorber has a first upper cavity and a first lower cavity, and the second shock absorber has a second upper cavity and a second lower cavity. At least one first accumulator is connected to the first oil circuit, and the first oil circuit connects the first upper chamber and the second upper chamber; At least one second accumulator is connected to the second oil circuit, and the second oil circuit connects the first lower chamber and the second lower chamber; The hydraulic component is connected to the first oil circuit and the second oil circuit, and is used to transfer the oil in the first oil circuit and the oil in the second oil circuit to each other.

2. The suspension system according to claim 1, wherein: The suspension system further includes a first regulating component, which is disposed in the first oil circuit and is used to regulate the flow rate of the oil in the first oil circuit.

3. The suspension system according to claim 2, characterized in that The suspension system further includes a second adjusting component, which is disposed in the second oil circuit and is used to adjust the flow rate of the oil in the second oil circuit.

4. The suspension system according to claim 3, characterized in that The first regulating assembly includes a first damping regulating valve and / or a first throttle valve, and the second regulating assembly includes a second damping regulating valve and / or a second throttle valve.

5. The suspension system according to any one of claims 1 to 4, characterized in that: The suspension system further includes an oil pressure sensor for detecting the oil pressure in the first oil circuit and / or the second oil circuit.

6. The suspension system according to any one of claims 1 to 5, characterized in that: The at least one set of shock absorbing assemblies includes a shock absorbing assembly, and the shock absorbing assembly is arranged on the front axle of the vehicle or the rear axle of the vehicle; The hydraulic assembly includes a first motor and a first bidirectional hydraulic motor connected to the first motor, one outlet of the first bidirectional hydraulic motor is connected to the first oil circuit corresponding to the shock absorber assembly, and the other outlet of the first bidirectional hydraulic motor is connected to the second oil circuit corresponding to the shock absorber assembly.

7. The suspension system according to any one of claims 1 to 5, characterized in that: The at least one set of shock absorbing assemblies includes a first shock absorbing assembly and a second shock absorbing assembly, wherein the first shock absorbing assembly is arranged on the front axle of the vehicle and the second shock absorbing assembly is arranged on the rear axle of the vehicle; One outlet of the hydraulic component is connected to the first oil circuit corresponding to the first shock absorber component and the first oil circuit corresponding to the second shock absorber component, and the other outlet of the hydraulic component is connected to the second oil circuit corresponding to the first shock absorber component and the second oil circuit corresponding to the second shock absorber component.

8. The suspension system according to claim 7, wherein: The hydraulic assembly includes a second motor, a second bidirectional hydraulic motor, a first intermediate oil circuit, a second intermediate oil circuit, a first control valve and a second control valve; The second bidirectional hydraulic motor is transmission-connected to the second motor, the first middle oil circuit connects the first port of the first control valve and the first port of the second control valve, and the first middle oil circuit is connected to an outlet of the second bidirectional hydraulic motor, the second middle oil circuit connects the second port of the first control valve and the second port of the second control valve, and the second middle oil circuit is connected to an outlet of the second bidirectional hydraulic motor, the third port of the first control valve is connected to the first oil circuit corresponding to the first shock absorber assembly, the fourth port of the first control valve is connected to the second oil circuit corresponding to the first shock absorber assembly, the third port of the second control valve is connected to the first oil circuit corresponding to the second shock absorber assembly, and the fourth port of the second control valve is connected to the second oil circuit corresponding to the second shock absorber assembly.

9. The suspension system according to claim 8, wherein: The first control valve and the second control valve are both two-position four-way valves.

10. The suspension system according to any one of claims 1 to 5, characterized in that: The at least one group of shock-absorbing assemblies includes a first shock-absorbing assembly and a second shock-absorbing assembly, the first shock absorber in the first shock-absorbing assembly is arranged on the front axle of the vehicle, and the second shock absorber in the first shock-absorbing assembly is arranged on the rear axle of the vehicle; the first shock absorber in the second shock-absorbing assembly is arranged on the front axle of the vehicle, and the second shock absorber in the second shock-absorbing assembly is arranged on the rear axle of the vehicle.

11. The suspension system according to claim 10, wherein: The hydraulic assembly includes a first hydraulic structure and a second hydraulic structure; one outlet of the first hydraulic structure is connected to the first oil circuit corresponding to the first shock absorber assembly, and another outlet of the first hydraulic structure is connected to the second oil circuit corresponding to the first shock absorber assembly; one outlet of the second hydraulic structure is connected to the first oil circuit corresponding to the second shock absorber assembly, and another outlet of the second hydraulic structure is connected to the second oil circuit corresponding to the second shock absorber assembly.

12. A vehicle, characterized in that: The vehicle comprises a vehicle body, wheels, and the suspension system according to any one of claims 1 to 11, wherein the suspension system is arranged between the vehicle body and the wheels.

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