Height adjusting device, suspension assembly and vehicle

Abstract

The utility model discloses a height adjusting device, a suspension assembly and a vehicle. The height adjusting device comprises an air bag, a lifting mechanism and a lifting mechanism, the hydraulic assembly is arranged below the air bag in a lifting mode, and the air bag is connected with the hydraulic assembly. The air bag is only responsible for bearing and absorbing vibration, and the hydraulic assembly is responsible for height adjustment, so that the suspension assembly and a brake system can be prevented from competing for an air source, the load rate of an air compressor is reduced, the service life of the air compressor is prolonged, the inflation and deflation frequency of the air bag due to height adjustment can be reduced, and the service life is prolonged. Height adjustment is implemented by the hydraulic assembly more efficiently, flexibly and conveniently, in addition, a large-volume gas storage device of the suspension assembly is reduced, and the available arrangement space of the vehicle is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a height adjustment device, a suspension assembly and a vehicle. Background Art

[0002] At present, with the development of vehicle suspension assemblies, users' requirements for suspension assemblies have expanded from previous structural reliability and comfort to operability.

[0003] In related technologies, the suspension assembly mainly uses air as the medium. The posture of the vehicle body can be controlled by adjusting the inflation degree of the airbag, achieving height adjustment actions such as rising, falling, and kneeling sideways, and the operation is sensitive and convenient.

[0004] However, the existing electronically controlled suspension also has significant defects: first, in order to ensure that the storage and retrieval process of the medium is safe and effective, a separate compressed air tank needs to be set up. Even if the air compressor is disconnected, the above-mentioned rising and falling stroke requirements can be achieved, and setting up a special air tank will take up more vehicle layout space; secondly, the suspension assembly will consume compressed air in the process of implementing the height adjustment action. When the compressed air pressure in the air tank is insufficient, it must rely on the air compressor for replenishment. Since the vehicle braking system also uses an air compressor, the pure air medium suspension assembly objectively increases the load rate of the air compressor, thereby increasing the failure rate of the air compressor and shortening its service life; in addition, the airbag of the suspension assembly will expand, contract and fold during the height adjustment action. Frequent use will accelerate the aging of the bag skin, and the side kneeling function is generally only implemented on the passenger door side, which will cause the aging rate of the airbags on both sides to be inconsistent. Utility Model Content

[0005] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a height adjustment device, which can increase the service life of the air compressor and the airbag, and also reduce the large volume of the air storage device of the suspension assembly, thereby increasing the available layout space of the vehicle.

[0006] The utility model further provides a suspension assembly.

[0007] The utility model further provides a vehicle.

[0008] According to the height adjustment device of the utility model, it comprises: an airbag; a hydraulic assembly, wherein the hydraulic assembly is movably arranged below the airbag, and the airbag is connected to the hydraulic assembly.

[0009] According to the height adjustment device of the present invention, the airbag is only responsible for bearing weight and absorbing vibration, while the height adjustment is transferred to the hydraulic component. This can avoid the suspension assembly and the braking system competing for air source, reduce the load rate of the air compressor, and increase the service life of the air compressor. It can also reduce the number of times the airbag is filled and deflated due to height adjustment, thereby extending the service life. In addition, the height adjustment is more efficient and flexible when implemented by the hydraulic component. In addition, the large-volume air storage device of the suspension assembly is reduced, thereby increasing the available layout space of the vehicle.

[0010] In some examples of the present invention, the hydraulic assembly includes: a hydraulic cylinder, and the hydraulic cylinder is connected to the airbag.

[0011] In some examples of the present invention, the hydraulic assembly also includes: a hydraulic oil tank and a hydraulic pump, the oil in the hydraulic oil tank selectively flows in the direction of the hydraulic cylinder, and the hydraulic pump is connected between the hydraulic cylinder and the hydraulic oil tank to control the lifting and lowering of the hydraulic cylinder.

[0012] In some examples of the present invention, the hydraulic component also includes: a hydraulic cylinder stroke sensor and a liquid level sensor, the hydraulic cylinder stroke sensor is arranged on the hydraulic pump, the hydraulic cylinder stroke sensor is suitable for detecting the movement stroke of the hydraulic cylinder, and the liquid level sensor is arranged in the hydraulic oil tank, and the liquid level sensor is suitable for detecting the height of the oil in the hydraulic oil tank.

[0013] The suspension assembly according to the utility model comprises: a vehicle frame; the height adjustment device mentioned above, and the airbag is connected to the vehicle frame.

[0014] In some examples of the present invention, the suspension assembly also includes: a height sensor and an air pressure sensor, wherein the height sensor is arranged on the frame, the height sensor is suitable for detecting the lifting value of the frame, and the air pressure sensor is arranged on the airbag, the air pressure sensor is suitable for detecting the air pressure in the airbag.

[0015] In some examples of the present invention, the suspension assembly also includes: a controller, the hydraulic component includes: a hydraulic pump, a hydraulic cylinder stroke sensor and a liquid level sensor, and the hydraulic pump, the hydraulic cylinder stroke sensor, the liquid level sensor, the height sensor and the air pressure sensor are electrically connected to the controller respectively.

[0016] In some examples of the present invention, the suspension assembly further includes: an air cylinder and an air pressure valve, wherein the air pressure valve is connected between the air bag and the air cylinder, and the air pressure valve is electrically connected to the controller.

[0017] In some examples of the present invention, the suspension assembly further includes: a detection component, the detection component is suitable for detecting a vehicle speed signal, a parking signal and a door opening and closing signal of the vehicle, and the detection component is electrically connected to the controller.

[0018] In some examples of the present invention, the suspension assembly also includes: a first mounting plate and a second mounting plate, the first mounting plate is connected to the bottom of the frame, the hydraulic assembly includes: a hydraulic cylinder, the second mounting plate is connected to the top of the hydraulic cylinder, and the airbag is connected between the first mounting plate and the second mounting plate.

[0019] In some examples of the present invention, the suspension assembly also includes: a guide member, one of the guide member and the second mounting plate is provided with a slide groove, and the other of the guide member and the second mounting plate is provided with a slider, and the slider slides up and down in cooperation with the slide groove.

[0020] In some examples of the present invention, the suspension assembly further includes: an axle, and the hydraulic component is liftably disposed on the axle.

[0021] The vehicle according to the utility model comprises: the suspension assembly mentioned above.

[0022] In some examples of the present invention, the vehicle further includes: a display alarm component, the suspension assembly includes: a controller, and the display alarm component is electrically connected to the controller.

[0023] In some examples of the present invention, the vehicle further includes: a control member, wherein the control member is electrically connected to the controller.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] Figure 1 is a schematic diagram of a suspension assembly according to an embodiment of the utility model;

[0027] Figure 2 This is a connection diagram of the controller.

[0028] Reference numerals:

[0029] 1. Suspension assembly;

[0030] 10. Frame; 20. Airbag; 30. Hydraulic assembly; 31. Hydraulic cylinder; 32. Hydraulic oil tank; 33. Hydraulic pump; 34. Hydraulic cylinder stroke sensor; 35. Liquid level sensor; 40. Height sensor; 50. Air pressure sensor; 60. Controller; 70. Air reservoir; 80. Air pressure valve; 90. Detection component; 100. First mounting plate; 110. Second mounting plate; 120. Guide component; 130. Axle; 140. Display alarm component; 150. Control component. DETAILED DESCRIPTION

[0031] The embodiments of the present utility model are described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model are described in detail below.

[0032] Reference below Figure 1 and Figure 2 A suspension assembly 1 according to an embodiment of the present utility model is described. The suspension assembly 1 may be an electronically controlled suspension assembly 1 .

[0033] like Figure 1 As shown, the suspension assembly 1 according to the embodiment of the utility model comprises: a frame 10 and a height adjustment device, and the height adjustment device comprises: an airbag 20 and a hydraulic assembly 30. The frame 10 is the main part of the vehicle, and can mainly play the role of installation and support, the airbag 20 can play the role of support and vibration absorption, and the hydraulic assembly 30 can be telescopic under the action of hydraulic pressure, so as to play the role of driving.

[0034] like Figure 1 As shown, the airbag 20 is connected to the frame 10, and the hydraulic assembly 30 is arranged below the airbag 20 in a movably movable manner, and the airbag 20 is connected to the hydraulic assembly 30. The airbag 20 is connected to the frame 10, so that the airbag 20 is mainly responsible for bearing the weight of the frame 10 and absorbing the vibration from the frame 10. The hydraulic assembly 30 is connected to the bottom of the airbag 20. First, the hydraulic assembly 30 can move up and down, so that the hydraulic assembly 30 can support the up and down movement of the airbag 20. The airbag 20 is connected to the frame 10, so that the frame 10 can be driven to move up and down, thereby controlling the posture of the vehicle body, realizing the height adjustment actions such as rising, falling, side kneeling, etc., and the operation is sensitive and convenient.

[0035] Therefore, the airbag 20 is only responsible for bearing weight and absorbing vibration, while the height adjustment is transferred to the hydraulic component 30. This can avoid the suspension assembly 1 and the braking system competing for air sources, reduce the load rate of the air compressor, and increase the service life of the air compressor. It can also reduce the number of times the airbag 20 is filled and deflated due to height adjustment, thereby extending the service life. In addition, the height adjustment is more efficient and flexible when implemented by the hydraulic component 30. In addition, the large-volume air storage device of the suspension assembly 1 is reduced, thereby increasing the available layout space of the vehicle.

[0036] Specifically, Figure 1 As shown, the hydraulic assembly 30 includes: a hydraulic cylinder 31 and a hydraulic oil tank 32. The hydraulic cylinder 31 is connected to the airbag 20, and the oil in the hydraulic oil tank 32 selectively flows in the direction of the hydraulic cylinder 31. The hydraulic cylinder 31 can mainly play the role of moving up and down. The hydraulic oil tank 32 is provided with oil. When the oil flows in the direction of the hydraulic cylinder 31, the oil will squeeze the hydraulic cylinder 31 upward, so that the hydraulic cylinder 31 can be driven to move upward. The hydraulic cylinder 31 is connected to the airbag 20, so that the hydraulic cylinder 31 can drive the airbag 20 and the frame 10 to move upward. Of course, when the oil flows back to the hydraulic oil tank 32, the hydraulic cylinder 31 will gradually move downward, so that the airbag 20 and the frame 10 can be driven to move downward, and then the height of the frame 10 can be adjusted.

[0037] Among them, Figure 1 As shown, the hydraulic assembly 30 also includes: a hydraulic pump 33, which is connected between the hydraulic cylinder 31 and the hydraulic oil tank 32 to control the lifting and lowering of the hydraulic cylinder 31. The hydraulic pump 33 can play the role of pumping oil. The hydraulic pump 33 is connected between the hydraulic cylinder 31 and the hydraulic oil tank 32, so that the hydraulic pump 33 can pump the oil in the hydraulic oil tank 32 into the hydraulic cylinder 31, driving the hydraulic cylinder 31 to move upward. Of course, the oil in the hydraulic oil tank 32 can also flow back to the hydraulic oil tank 32 through the hydraulic pump 33, so that the hydraulic cylinder 31 moves downward.

[0038] In addition, if Figure 1 As shown, the hydraulic assembly 30 also includes: a hydraulic cylinder stroke sensor 34 and a liquid level sensor 35. The hydraulic cylinder stroke sensor 34 is arranged in the hydraulic pump 33. The hydraulic cylinder stroke sensor 34 is suitable for detecting the movement stroke of the hydraulic cylinder 31. The liquid level sensor 35 is arranged in the hydraulic oil tank 32. The liquid level sensor 35 is suitable for detecting the height of the oil in the hydraulic oil tank 32. The hydraulic cylinder stroke sensor 34 is arranged in the hydraulic pump 33. The hydraulic cylinder stroke sensor 34 is mainly used to detect the movement stroke of the hydraulic cylinder 31 and whether the movement stroke of the hydraulic cylinder 31 meets the requirements, so that the movement of the hydraulic cylinder 31 can be controlled according to the detection result. The liquid level sensor 35 is arranged in the hydraulic oil tank 32. The liquid level sensor 35 is mainly used to detect the height of the oil in the hydraulic oil tank 32, so that it can be known whether the oil in the hydraulic oil tank 32 is consumed, so that the oil in the hydraulic oil tank 32 can be replenished in time.

[0039] Of course, if Figure 1As shown, the suspension assembly 1 further includes: a height sensor 40 and an air pressure sensor 50. The height sensor 40 is arranged on the frame 10, and the height sensor 40 is suitable for detecting the lifting value of the frame 10. The air pressure sensor 50 is arranged on the airbag 20, and the air pressure sensor 50 is suitable for detecting the air pressure in the airbag 20. The height sensor 40 is arranged on the frame 10, so that the height sensor 40 can detect the lifting value of the frame 10, and thus can detect whether the lifting of the frame 10 meets the adjustment requirements of the vehicle body. The air pressure sensor 50 is arranged on the airbag 20, so that the air pressure sensor 50 can detect the air pressure in the airbag 20, and detect whether the air pressure in the airbag 20 is normal and whether it meets the normal requirements, so that the air pressure in the airbag 20 can be replenished in time.

[0040] Furthermore, if Figure 1 As shown, the suspension assembly 1 further includes: a controller 60 , and the hydraulic pump 33 , the hydraulic cylinder stroke sensor 34 , the liquid level sensor 35 , the height sensor 40 and the air pressure sensor 50 are electrically connected to the controller 60 , respectively. The controller 60 mainly plays a control role. For example, when the hydraulic cylinder stroke sensor 34 detects that the movement stroke of the hydraulic cylinder 31 does not meet the demand, the information can be transmitted to the controller 60, and the controller 60 controls the hydraulic cylinder 31 to continue moving until the movement stroke of the hydraulic cylinder 31 meets the demand; when the liquid level sensor 35 detects that the height of the oil in the hydraulic oil tank 32 is insufficient, the oil in the hydraulic oil tank 32 is consumed, and the information can be transmitted to the controller 60. The controller 60 can issue an alarm to prompt that the oil in the hydraulic oil tank 32 needs to be replenished in time; when the height sensor 40 detects that the lifting of the frame 10 does not meet the adjustment requirements of the vehicle body, the information can be transmitted to the controller 60. Similarly, the controller 60 controls the hydraulic cylinder 31 to continue moving until the lifting value of the frame 10 meets the demand; when the air pressure sensor 50 detects that the air pressure in the airbag 20 is abnormal, the information can be transmitted to the controller 60, and the controller 60 can also issue an alarm to prompt that the air pressure in the airbag 20 needs to be replenished in time.

[0041] According to an optional embodiment of the present utility model, Figure 1As shown, the suspension assembly 1 further includes: an air reservoir 70 and an air pressure valve 80, the air pressure valve 80 is connected between the air bag 20 and the air reservoir 70, and the air pressure valve 80 is electrically connected to the controller 60. The air reservoir 70 can fill the air into the air bag 20, and the air pressure valve 80 can control the communication therebetween, the air pressure valve 80 is connected between the air bag 20 and the air reservoir 70, and the air pressure valve 80 is electrically connected to the controller 60, when the air pressure sensor 50 detects that the air pressure of the air bag 20 is insufficient, the controller 60 can transmit the control instruction to the air pressure valve 80, the air pressure valve 80 is opened, and the gas in the air reservoir 70 can be passed into the air bag 20, so that the air pressure in the air bag 20 returns to normal, thereby realizing the normal operation of the air bag 20, and in this way, the electric control can be achieved, the operation is simpler and faster, and the use of the air bag 20 is more stable and reliable.

[0042] It should be noted that if Figure 2 As shown, the suspension assembly 1 also includes: a detection member 90, which is suitable for detecting the vehicle speed signal, parking signal and door opening and closing signal of the vehicle, and the detection member 90 is electrically connected to the controller 60. When the vehicle performs the side kneeling operation, the vehicle needs to stop, enter the parking state, and the door is opened. The detection member 90 is electrically connected to the controller 60. When the detection member 90 detects that the vehicle speed is zero, it is in the parking state, and the door is open, the detection member 90 transmits the detection signal to the controller 60, and then the controller 60 controls the hydraulic cylinder 31 to work, so that the side kneeling operation can be performed more safely, thereby ensuring the reliability and effectiveness of the suspension assembly 1. Among them, the vehicle speed signal, parking signal and door opening and closing signal of the vehicle can be obtained from the vehicle CAN network.

[0043] In addition, if Figure 1 As shown, the suspension assembly 1 further includes: a first mounting plate 100 and a second mounting plate 110, wherein the first mounting plate 100 is connected to the lower part of the vehicle frame 10, the second mounting plate 110 is connected to the upper part of the hydraulic cylinder 31, and the airbag 20 is connected between the first mounting plate 100 and the second mounting plate 110. The first mounting plate 100 and the second mounting plate 110 can both play the role of auxiliary installation, and the first mounting plate 100 is connected to the lower part of the vehicle frame 10, so that the airbag 20 can be conveniently connected to the vehicle frame 10 through the first mounting plate 100, and similarly, the second mounting plate 110 is connected to the upper part of the hydraulic cylinder 31, so that the airbag 20 can be conveniently connected to the hydraulic cylinder 31 through the second mounting plate 110, thereby ensuring the firmness and reliability of the connection between the airbag 20 and the vehicle frame 10 and the hydraulic cylinder 31.

[0044] Alternatively, if Figure 1As shown, the suspension assembly 1 further includes: a guide member 120, one of the guide member 120 and the second mounting plate 110 is provided with a slide groove, and the other of the guide member 120 and the second mounting plate 110 is provided with a slider, and the slider slides up and down with the slide groove. The guide member 120 can play a guiding role, and two guide members 120 can be provided, and the two ends of the second mounting plate 110 can be respectively clamped on the two guide members 120, for example: the guide member 120 is provided with a slide groove, so that the two ends of the second mounting plate 110 are provided with sliders, and the sliders are matched in the slide groove, and the slide groove can limit the slider to a certain extent, and the slider can slide relative to the slide groove, so that the movement of the second mounting plate 110 can be more stable and convenient.

[0045] In addition, Figure 1 As shown, the suspension assembly 1 further includes: an axle 130, and the hydraulic assembly 30 is movably arranged on the axle 130. That is, when the hydraulic cylinder 31 drives the frame 10 to move up and down, the frame 10 moves up and down relative to the axle 130, so that the position of the axle 130 can be kept stationary, while the height and posture of the vehicle body can change with the hydraulic assembly 30.

[0046] The vehicle according to the embodiment of the utility model comprises: the suspension assembly 1 described in the above embodiment.

[0047] Among them, Figure 2 As shown, the vehicle further includes: a display alarm component 140, and the suspension assembly 1 includes: a controller 60, and the display alarm component 140 is electrically connected to the controller 60. The display alarm component 140 can play the role of display and alarm, for example: the display alarm component 140 can be an indicator light or other alarm device set on the instrument panel, which can transmit the system status to the user. The display alarm component 140 is electrically connected to the controller 60. When there is an abnormal sensor signal communication or a hydraulic component failure, the controller 60 can transmit the display and alarm signal to the display alarm component 140, so as to better play a prompting role, and the fault can be quickly repaired to ensure the normal use of the suspension assembly 1.

[0048] In addition, if Figure 2 As shown, the vehicle further includes: a control member 150, which is electrically connected to the controller 60. The control member 150 is mainly used for user operation, and can generally be arranged on the center console of the cab for user convenience. The control member 150 is electrically connected to the controller 60. When the vehicle needs to adjust the height, the user can operate the control member 150, and the control member 150 can transmit the command to the controller 60, and the controller 60 then transmits the command to the suspension assembly 1, so that the vehicle height can be adjusted.

[0049] It should be noted that all the above components are connected through the vehicle's circuit and CAN network.

[0050] The working process of the suspension assembly 1 in the vehicle will be described in detail below:

[0051] After the vehicle is powered on, the controller 60 is powered on and starts working. In the first step, the signals of various sensors in the system are checked. If there is any signal communication abnormality, the fault is reported to the display alarm 140. In the second step, if there is no fault, the air pressure of the airbag 20 is tested and calibrated. When the air pressure is less than the standard value written in the controller 60, the air pressure valve 80 is opened and the air cylinder 70 inflates the airbag 20 until its air pressure value matches the standard value.

[0052] After completing the above steps, the suspension assembly 1 enters the standby state. At this time, if the user operates the control member 150, the controller 60 receives the height adjustment signal. At this time, the controller 60 will use the vehicle speed signal, parking signal and door opening and closing signal obtained by the vehicle CAN to decide whether to execute the height adjustment instruction. If executed, the controller 60 drives the hydraulic pump 33 to work, so that the hydraulic cylinder 31 rises or falls. During the movement of the hydraulic cylinder 31, the controller 60 always obtains the frame 10 height change value signal from the height sensor 40 and the hydraulic cylinder 31 stroke value signal from the hydraulic cylinder stroke sensor 34, and compares the above two signal values ​​with the height adjustment target value.

[0053] When the height change value of the frame 10 is the same as the stroke value of the hydraulic cylinder 31 and is consistent with the height adjustment target value, it indicates that the system is working normally and the height adjustment target is achieved, and the workflow ends. Otherwise, it indicates that the target has not been achieved and the workflow continues. When the height change value of the frame 10 and the stroke value of the hydraulic cylinder 31 cannot change synchronously, it indicates a hydraulic component failure, and the controller 60 reports the failure to the display alarm 140.

[0054] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0055] In the description of the present utility model, "first feature" and "second feature" may include one or more of the features. In the description of the present utility model, "plurality" means two or more. In the description of the present utility model, the first feature "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact not directly but through another feature between them. In the description of the present utility model, the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

[0056] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0057] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A height adjustment device, characterized in that: include: Airbag (20); a hydraulic assembly (30), the hydraulic assembly (30) being arranged below the airbag (20) in a liftable manner, and the airbag (20) being connected to the hydraulic assembly (30); Wherein, the hydraulic assembly (30) comprises: a hydraulic cylinder (31), wherein the hydraulic cylinder (31) is connected to the airbag (20); The hydraulic assembly (30) further comprises: a hydraulic oil tank (32) and a hydraulic pump (33); the oil in the hydraulic oil tank (32) selectively flows in the direction of the hydraulic cylinder (31); the hydraulic pump (33) is connected between the hydraulic cylinder (31) and the hydraulic oil tank (32) to control the lifting and lowering of the hydraulic cylinder (31); The hydraulic assembly (30) further comprises: a hydraulic cylinder stroke sensor (34) and a liquid level sensor (35); the hydraulic cylinder stroke sensor (34) is arranged on the hydraulic pump (33); the hydraulic cylinder stroke sensor (34) is suitable for detecting the movement stroke of the hydraulic cylinder (31); the liquid level sensor (35) is arranged in the hydraulic oil tank (32); the liquid level sensor (35) is suitable for detecting the height of the oil in the hydraulic oil tank (32).

2. A suspension assembly (1), characterized in that: include: Frame (10); The height adjustment device as claimed in claim 1, wherein the airbag (20) is connected to the vehicle frame (10).

3. The suspension assembly (1) according to claim 2, characterized in that: Also includes: A height sensor (40) and an air pressure sensor (50), wherein the height sensor (40) is arranged on the vehicle frame (10), and the height sensor (40) is suitable for detecting the lifting value of the vehicle frame (10); and the air pressure sensor (50) is arranged on the airbag (20), and the air pressure sensor (50) is suitable for detecting the air pressure in the airbag (20).

4. The suspension assembly (1) according to claim 3, characterized in that: Also includes: A controller (60), wherein the hydraulic assembly (30) comprises: a hydraulic pump (33), a hydraulic cylinder stroke sensor (34) and a liquid level sensor (35), wherein the hydraulic pump (33), the hydraulic cylinder stroke sensor (34), the liquid level sensor (35), the height sensor (40) and the air pressure sensor (50) are electrically connected to the controller (60), respectively.

5. The suspension assembly (1) according to claim 4, characterized in that: Also includes: An air storage cylinder (70) and an air pressure valve (80), wherein the air pressure valve (80) is connected between the air bag (20) and the air storage cylinder (70), and the air pressure valve (80) is electrically connected to the controller (60).

6. The suspension assembly (1) according to claim 4, characterized in that: Also includes: A detection element (90), the detection element (90) being suitable for detecting a vehicle speed signal, a parking signal and a door opening / closing signal of the vehicle, the detection element (90) being electrically connected to the controller (60).

7. The suspension assembly (1) according to claim 2, characterized in that: Also includes: A first mounting plate (100) and a second mounting plate (110), wherein the first mounting plate (100) is connected to the bottom of the vehicle frame (10), the hydraulic assembly (30) comprises a hydraulic cylinder (31), the second mounting plate (110) is connected to the top of the hydraulic cylinder (31), and the airbag (20) is connected between the first mounting plate (100) and the second mounting plate (110).

8. The suspension assembly (1) according to claim 7, characterized in that: Also includes: A guide member (120), wherein one of the guide member (120) and the second mounting plate (110) is provided with a slide groove, and the other of the guide member (120) and the second mounting plate (110) is provided with a slider, and the slider is slidably matched with the slide groove up and down.

9. The suspension assembly (1) according to claim 2, characterized in that: Also includes: A vehicle axle (130), wherein the hydraulic assembly (30) is arranged on the vehicle axle (130) in a liftable manner.

10. A vehicle, characterized in that: include: The suspension assembly (1) according to any one of claims 2 to 9.

11. The vehicle according to claim 10, characterized in that Also includes: A display alarm component (140), the suspension assembly (1) comprising a controller (60), the display alarm component (140) being electrically connected to the controller (60).

12. The vehicle according to claim 11, characterized in that Also includes: A control member (150), wherein the control member (150) is electrically connected to the controller (60).

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