Active suspension device
By using the electromagnet and armature adjustment device of the active suspension device to dynamically adjust the clamping force of the first friction plate and the second friction plate, the problem of the single damping characteristics of the traditional suspension device is solved, and the shock absorption effect and driving comfort are improved.
Patent Information
- Application Number
- CN202520347810.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-02-28
AI Technical Summary
Traditional rubber suspension devices have a single damping characteristic and cannot be dynamically adjusted according to different driving conditions and engine status, resulting in a single shock absorption effect and affecting driving comfort.
An active suspension device is adopted, and the clamping force between the first friction plate and the second friction plate is adjusted by an electromagnet and an armature adjustment device to achieve dynamic adjustment of damping and adapt to different road conditions and engine status.
It enables damping adjustment based on different road conditions and engine status, improving shock absorption and driving comfort.
Smart Images
Figure CN223750647U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of automobile damping, more particularly to an active suspension device. BACKGROUND
[0002] The engine is a device for providing power for the automobile, is the heart of the automobile, decides the power performance, the economy and the environmental protection of the automobile. At present, the engine used by the automobile is mostly heat energy power device, is called heat engine. The heat engine is the heat energy produced by the combustion of fuel into mechanical energy by means of the state change of working medium. In this process, the vibration of the engine is caused inevitably. The vibration of the engine not only influences the comfort of the driver and passenger of the automobile, but also causes the damage to the structure of the automobile and the engine, and influences the service life of the automobile and the engine. With the continuous improvement of the requirement of the driving comfort, the attenuation of the engine vibration is paid more and more attention, so the engine is generally installed on the automobile through the suspension. The suspension is the device for connecting the engine and the frame, which can reduce the vibration of the engine transmitted to the frame, improves the stability and the comfort when the vehicle is running, and the performance of the suspension system will directly influence the stability and the comfort of the vehicle running.
[0003] In the prior art, the rubber suspension is generally used, the mechanical energy generated by the engine vibration is absorbed by the deformation of the rubber, so as to achieve the damping effect. However, the stiffness and the damping characteristics of the traditional rubber suspension are single, cannot dynamically adjust the different damping required by the engine under different kinds and states, the damping effect is single, cannot guarantee the comfort of the automobile under different road conditions and engine states during the use process, and influences the experience of the driver and passenger. UTILITY MODEL CONTENTS
[0004] In order to solve the above problems, the active suspension device can adjust the damping, so that the vehicle selects different damping under different driving conditions and engine states, improves the damping effect of the engine, and improves the driving comfort.
[0005] The utility model provides an active suspension device, including the shell, the top of shell is provided with the slide hole, the load for connecting engine is slidably installed in the slide hole, the shell is the shell structure of inside hollow, the bottom surface of load is provided with the piston, the piston with the inner wall surface of shell is connected in sliding, the lower extreme of piston is provided with the first friction piece, the below of the shell inside is fixedly installed with the driven shaft, the driven shaft is horizontally arranged, the second friction piece is connected in sliding with on the driven shaft, the second friction piece sets up at least two, the first friction piece inserts between two second friction pieces of adjacent, the first friction piece with second friction piece is connected in sliding, still be provided with the adjusting device of the clamping force between two second friction pieces of adjacent on the driven shaft, the adjusting device includes the electromagnet and armature, the electromagnet is fixedly installed in one end of driven shaft, the armature is slidably installed in the other end of driven shaft, and the second friction piece is arranged between the electromagnet and the armature.
[0006] In the technical solution, the engine is installed on the load, the load is inserted into the shell through the sliding hole, the shell is a hollow shell structure, and space is provided for the installation of various parts. The engine vibration drives the load to slide in the sliding hole. A piston is arranged below the load, and the piston is in sliding connection with the inner wall surface of the shell, thereby increasing the contact area with the shell and making the sliding of the load in the vertical direction more stable. The lower end of the piston is provided with a first friction plate, and the inside of the shell is provided with a second friction plate. The first friction plate and the second friction plate are in sliding connection therebetween, and the first friction plate and the second friction plate have a friction force therebetween, thereby forming a damping. The load needs to overcome the damping between the first friction plate and the second friction plate to move in the vertical direction, thereby realizing the consumption of the mechanical energy of the load. The second friction plate is provided with at least two, and the first friction plate is inserted between the two adjacent second friction plates, so that the single first friction plate has two contact surfaces with the second friction plate, thereby increasing the friction force between the first friction plate and the second friction plate, so that it can provide greater damping. The two second friction plates are clamped on both sides of the first friction plate, and the position of the first friction plate is limited, so that the first friction plate and the second friction plate will not be separated from each other to cause the friction force to disappear and lose the damping effect. The size of the friction force between the first friction plate and the second friction plate is determined by the pressure therebetween, and the pressure therebetween can be adjusted to adjust the friction force therebetween, thereby realizing the adjustment of the damping. The second friction plate is installed in the shell through a passive shaft, and the second friction plate is in sliding connection with the passive shaft. By applying different pressures between the adjacent second friction plates, the first friction plate located between the two second friction plates has different clamping forces, so that the first friction force and the second friction force have different friction forces. The load needs to overcome different dampings when moving under the drive of the engine, thereby achieving the effect of dynamic adjustment of the damping. The adjusting device installed on the passive shaft can adjust the pressure between the adjacent second friction plates to adjust the clamping force, thereby realizing the adjustment of the damping, thereby adapting to different road conditions and engine states, and achieving better damping effect. The adjusting device includes an electromagnet and an armature, and the electromagnet and the armature are arranged on both sides of the second friction plate. The electromagnet can generate a magnetic force to attract the armature after being electrified. The electromagnet can generate different magnetic forces to attract the armature according to the size of the current, thereby generating a clamping force. The second friction plate is arranged between the electromagnet and the armature, and the clamping force between the electromagnet and the armature is transmitted to the second friction plate after contacting the second friction plate, thereby increasing the clamping force of the first friction plate between the two second friction plates, thereby forming greater damping. When the magnetic force of the electromagnet decreases, the attraction force of the armature decreases, thereby reducing the clamping force of the first friction plate on the second friction plate, thereby obtaining smaller damping. Finally, the damping is adjusted.
[0007] Preferably, two ends of the passive shaft are fixedly connected with the shell, the passive shaft comprises a first shaft segment and a second shaft segment, the electromagnet is mounted on the first shaft segment, the second friction plate and the armature are mounted on the second shaft segment, and a fixing structure for fixing the position of the electromagnet is arranged between the first shaft segment and the second shaft segment.
[0008] Preferably, the diameter of the first shaft segment is smaller than the diameter of the second shaft segment, a stepped surface is formed, the fixing structure is the stepped surface, and the electromagnet abuts against the stepped surface.
[0009] Preferably, the passive shaft is a spline structure, a first spline hole is formed in the second friction plate, a second spline hole is formed in the armature, and the first spline hole and the second spline hole are in sliding connection with the passive shaft.
[0010] Preferably, a first shaft hole and a second shaft hole are arranged on the side wall surface of the shell, the first shaft hole and the second shaft hole are oppositely arranged, two ends of the passive shaft are mounted in the first shaft hole and the second shaft hole respectively, a first end cover is detachably mounted on the shaft hole, and a second end cover is detachably mounted on the second shaft hole.
[0011] Preferably, the load comprises a load block, an outer wall surface of the load block is in sliding connection with the sliding hole, a top end of the load block is provided with a mounting hole for mounting an engine, a bottom plate is further fixedly connected below the load block, and a piston is fixedly connected below the bottom plate, an outer wall surface of the piston is in sliding connection with an inner wall surface of the shell.
[0012] Preferably, the application further comprises a driving shaft, two ends of the driving shaft are fixedly mounted at the bottom of the piston, the driving shaft is parallel to the passive shaft, and the first friction plate is in sliding connection with the driving shaft.
[0013] Preferably, the piston is a hollow structure with an open bottom end, and the driving shaft is mounted on an inner wall surface of the piston.
[0014] Preferably, the driving shaft is a spline structure, a third spline hole is arranged on the first friction plate, and the third spline hole is in sliding connection with the driving shaft.
[0015] Preferably, the shell comprises a shell body, the shell body is open at the bottom end, a base is detachably mounted at the bottom end of the shell body, the base seals the bottom end of the shell body, and a fixing hole is arranged on the base.
[0016] Compared with the prior art, the utility model discloses the beneficial effects are: through the first friction plate and the second friction plate of being located on the load sliding connection, the damping is formed through the friction between the first friction plate and the second friction plate, and the mechanical energy that the load moves produces under the engine vibration is consumed, realizes the damping effect. The number of second friction plate is at least two, and different second friction plate is clamped in the first friction surface two sides, and the contact area of first friction plate and second friction plate is increased, so that the greater friction between them can have greater damping, and the second friction plate can be slidably installed on the driven shaft, and the friction of the second friction plate to the first friction plate can be adjusted by adjusting the distance between the adjacent second friction plates, so that different dampings are obtained. The adjusting device is arranged on the driven shaft and is used for adjusting the clamping force between the adjacent second friction plates. The adjusting device includes an electromagnet and an armature, and the clamping force between the adjacent second friction plates can be provided by the attraction of the electromagnet to the armature. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is the perspective view of the active suspension device of the utility model;
[0018] Figure 2 It is the half cutaway view of the active suspension device of the utility model;
[0019] Figure 3 It is the explosion view of the active suspension device of the utility model;
[0020] In the drawings: 1, shell;2, load;3, first friction plate;4, driven shaft;5, second friction plate;6, adjusting device;7, driving shaft;11, sliding hole;12, first shaft hole;13, second shaft hole;14, first end cover;15, second end cover;16, shell;17, base;18, fixed hole;21, support block;22, mounting hole;23, bottom plate;24, cylindrical structure;41, first shaft section;42, second shaft section;43, step surface;61, electromagnet;62, armature. DETAILED DESCRIPTION
[0021] The drawings are only for example illustration, can not be understood as the limitation of this patent;In order to better illustrate this embodiment, some components of the drawings can be omitted, enlarged or reduced, and do not represent the size of actual product;For those skilled in the art, some well-known structures in the drawings and their description can be omitted, which is understandable. The positional relationship in the drawings is only for example illustration, can not be understood as the limitation of this patent.
[0022] The same or similar reference signs in the drawings of the embodiments of the present application correspond to the same or similar components; in the description of the present application, it is understood that if the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "long", "short" and the like are based on the orientations or positional relationships shown in the drawings, they are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation and be operated, therefore the terms describing the positional relationships in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the present patent, and for those skilled in the art, the specific meanings of the above terms can be understood according to the specific circumstances.
[0023] The technical scheme of the present application will be further specifically described below by means of specific embodiments and in combination with the drawings:
[0024] Embodiment 1
[0025] As Figure 1 , 2As shown, an active suspension device, including a shell 1, the top end of the shell 1 is provided with a sliding hole 11, the load 2 for connecting the engine is slidably installed in the sliding hole 11, the shell 1 is a hollow shell structure, the bottom surface of the load 2 is provided with a piston 24, the piston 24 is slidably connected with the inner wall surface of the shell 1, the lower end of the piston 24 is provided with a first friction plate 3, the lower part inside the shell 1 is fixedly installed with a driven shaft 4, the driven shaft 4 is horizontally arranged, the driven shaft 4 is slidably connected with a second friction plate 5, the second friction plate 5 is provided with at least two, the first friction plate 3 is inserted between the adjacent two second friction plates 5, the first friction plate 3 is slidably connected with the second friction plate 5, the driven shaft 4 is further provided with an adjusting device 6 for adjusting the clamping force between the adjacent two second friction plates 5, the adjusting device 6 includes an electromagnet 61 and an armature 62, the electromagnet 61 is fixedly installed on one end of the driven shaft 4, the armature 62 is slidably installed on the other end of the driven shaft 4, the second friction plate 5 is arranged between the electromagnet 61 and the armature 62. The engine is installed on the load, the load 2 is inserted into the shell 1 through the sliding hole 11, the shell 1 is a hollow shell structure, which provides space for the installation of various parts. The engine vibration drives the load 2 to slide in the sliding hole 22. The load 2 is provided with a piston 24 below, the piston 24 is slidably connected with the inner wall surface of the shell 1, which increases the contact area with the shell 1, making the sliding of the load 2 in the vertical direction more stable. The lower end of the piston 24 is provided with a first friction plate, the inside of the shell 1 is provided with a second friction plate 5, the first friction plate 3 is slidably connected with the second friction plate 5, there is a friction force between the first friction plate 3 and the second friction plate 5, forming a damping. The load 2 needs to overcome the damping between the first friction plate 3 and the second friction plate 5 to move in the vertical direction, thereby realizing the consumption of the mechanical energy of the load 2. The number of second friction plates 5 is at least two, the first friction plate 3 is inserted between the adjacent two second friction plates 5, so that there are two contact surfaces between the single first friction plate 3 and the second friction plate 5, thereby increasing the friction force between the first friction plate 3 and the second friction plate 5, so that it can provide greater damping. The two second friction plates 5 are clamped on both sides of the first friction plate 3, which limits the position of the first friction plate 3, and can ensure that the first friction plate 3 and the second friction plate 5 will not be separated from each other to cause the friction force to disappear and lose the damping effect. The size of the friction force between the first friction plate 3 and the second friction plate 5 is determined by the clamping force therebetween, which can be adjusted by adjusting the clamping force of the second friction plate 5 on the first friction plate 3 to adjust the friction force therebetween, thereby realizing the adjustment of the damping.The second friction plate 5 is installed in the shell 1 through the driven shaft 4, the second friction plate 5 is in sliding connection with the driven shaft 4, the adjacent second friction plates 5 have different clamping forces on the first friction plate 3 located between the two by adjusting the pressure between the adjacent second friction plates 5, so that the first friction plate 3 and the second friction plate 5 have different friction forces, and the engine needs to overcome different dampings to move the load 2, so as to achieve the effect of dynamic adjustment of damping. The adjusting device 6 installed on the driven shaft 4 can adjust the distance between the adjacent second friction plates 5 and thus adjust the clamping force, so as to adjust the damping and thus adapt to different road conditions and engine states, so as to achieve better damping effect. The electromagnet 61 can generate magnetic force to attract the armature 62 after being electrified. The electromagnet 61 can generate different sizes of magnetic force to attract the armature 62 according to the size of the current input, so as to generate clamping force. The second friction plate 5 is arranged between the electromagnet 61 and the armature 62, the clamping force between the electromagnet 61 and the armature 62 is transmitted to the second friction plate 5 after contacting the second friction plate 5, so that the clamping force of the adjacent second friction plates 5 on the first friction plate 3 located between the two increases to form greater damping. When the magnetic force of the electromagnet 62 becomes smaller, the attraction force of the armature 61 decreases, so that the clamping force of the second friction plate 5 on the first friction piece 3 decreases, so as to obtain smaller damping. Finally, the adjustment of the damping is realized.
[0026] As shown in Figure 2 The two ends of the driven shaft 4 are fixedly connected with the shell 1, the driven shaft 4 includes a first shaft section 41 and a second shaft section 42, the electromagnet 61 is installed on the first shaft section 41, the second friction plate 5 and the armature 62 are both installed on the second shaft section 42, and a fixing structure for fixing the position of the electromagnet 61 is arranged between the first shaft section 41 and the second shaft section 42. The first shaft section 41 is used for installing the electromagnet 61, the second shaft section 42 is used for installing the armature 62 and the second friction plate 5, and the fixing structure is arranged between the first shaft section 41 and the second shaft section 42 to fix the position of the electromagnet 61, so as to avoid the position of the electromagnet 61 from being deviated.
[0027] As shown in Figure 2 The diameter of the first shaft section 41 is smaller than that of the second shaft section 42 to form a stepped surface 43, the fixing structure is the stepped surface 43, and the electromagnet 61 abuts against the stepped surface 43. By abutting the electromagnet 61 against the stepped surface 43, the sliding of the electromagnet 61 to the second shaft section 42 can be limited, and the position of the electromagnet 61 can be fixed.
[0028] As shown in Figure 3As shown, the passive shaft 4 is a spline structure, the second friction plate 5 is provided with a first spline hole, the armature 62 is provided with a second spline hole, and the first spline hole and the second spline hole are both in sliding connection with the passive shaft 4. Under the action of the first friction plate 3, the second friction plate 5 may rotate around the passive shaft 4 under excessive pressure, and the armature 62 may also rotate. The passive shaft 4 is provided as a spline structure, the armature 62 is provided with a first spline hole, the armature 62 is provided with a second spline hole, and the spline structure of the passive shaft 4 is matched with the first spline hole and the second spline hole, so as to limit the rotation of the second friction plate 5 and the armature 62 around the passive shaft 4.
[0029] As shown in the figure, Figure 2 As shown, the side wall surface of the shell 1 is provided with a first shaft hole 12 and a second shaft hole 13, the first shaft hole 12 and the second shaft hole 13 are oppositely arranged, the two ends of the passive shaft 4 are respectively installed in the first shaft hole 12 and the second shaft hole 13, the first end cover 14 is detachably installed on the shaft hole 12, and the second end cover 15 is detachably installed on the second shaft hole 13. When it is necessary to disassemble the passive shaft 4, it is only necessary to directly insert or pull out the passive shaft 4 from the shell 1 from the first shaft hole 12 or the second shaft hole 13. The first shaft hole 12 and the second shaft hole 13 are covered by the first end cover 14 and the second end cover 15 respectively, and the passive shaft 4 can be prevented from sliding out of the first shaft hole 12 or the second shaft hole 13 by covering the first shaft hole 12 and the second shaft hole 13 with the first end cover 14 and the second end cover 15, and at the same time, the dustproof function is achieved, so that dust cannot enter the shell 1 through the first shaft hole 12 or the second shaft hole 13 to affect the normal work of other components.
[0030] Embodiment 2
[0031] This embodiment is similar to the above-mentioned embodiment 1, and the difference lies in that, as shown in the figure, Figure 2 As shown, the load 2 includes a load block 21, the outer wall surface of the load block 21 is in sliding connection with the sliding hole 11, the top end of the load block 21 is provided with a mounting hole 22 for mounting an engine, the bottom of the load block 21 is further fixedly connected with a bottom plate 23, the bottom of the bottom plate 23 is fixedly connected with a piston 24, and the outer wall surface of the piston 24 is in sliding connection with the inner wall surface of the shell 1. The engine is fixedly installed on the load block 21 through the mounting hole 22, and the vibration of the engine 21 drives the load block 21 to move. The load block 21 is inserted into the shell 1 through the sliding hole 11, and the outer wall surface of the load block 21 is in sliding connection with the sliding hole 11, so that the sliding hole 11 limits the moving direction of the load block 21. The bottom plate 23 is fixedly connected below the load block 21, and the area of the bottom plate 23 is larger than the area of the sliding hole 11, so that the load block 21 cannot pass through the sliding hole 11 and cannot fall off from the sliding hole 11. At the same time, the bottom plate 23 provides a larger connecting area for connecting with the piston 24, so that the connection with the piston 24 is more stable.
[0032] As shown in the figure, Figure 2As shown, the device further comprises a driving shaft 7, two ends of the driving shaft 7 are fixedly installed on the bottom of the piston 24, the driving shaft 7 is parallel to the driven shaft 4, and the first friction plate 3 is slidably connected to the driving shaft 7. The second friction plate 5 can slide along the axial direction of the driven shaft 4, so that the clamping position is changed. By slidably installing the first friction plate 3 on the driving shaft 7 parallel to the driven shaft 4, the first friction plate 3 can be displaced along the axial direction of the driving shaft 7 to adapt to the change of the position of the second friction plate 5.
[0033] As shown in the drawings, Figure 2 The piston 24 is a hollow structure with an open bottom, and the inner wall of the piston 24 is provided with the driving shaft 7. This arrangement ensures that the piston 24 has a sufficient contact area with the inner wall of the housing 1, and fully utilizes the internal space of the piston 24, thereby reducing the height of the device.
[0034] Embodiment 3
[0035] This embodiment is similar to the above-mentioned embodiment 1, and the difference is that, as shown in the drawings, Figure 3 The driving shaft 7 is a spline structure, and the first friction plate 3 is provided with a third spline hole, and the third spline hole is slidably connected to the driving shaft 7. The first friction plate 3 is provided with a third spline hole, and the third spline hole is slidably connected to the driving shaft 7. By setting the driving shaft 7 as a spline structure and cooperating with the third spline hole on the first friction plate 3, the rotation of the first friction plate 3 around the driving shaft 7 can be prevented.
[0036] As shown in the drawings, Figure 2 The housing 1 comprises a shell 16, the bottom end of the shell 16 is open, and the bottom end of the shell 16 is detachably provided with a base 17, the base 17 closes the bottom end of the shell 16, and the base 17 is provided with a fixing hole 18. By detaching the base 17, the bottom end of the shell 16 is opened, and the equipment inside the housing 1 can be installed, inspected, maintained and replaced through the open surface. The base 17 is provided with a fixing hole 18 for fixing and installing the device on the vehicle body.
[0037] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, it is not necessary and impossible to enumerate all the embodiments. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.
Claims
1. An active suspension device characterized by comprising: The utility model provides a load connecting device of engine, including shell (1), the top of shell (1) is provided with slide hole (11), the load (2) for connecting engine is slidably installed in slide hole (11), shell (1) is the shell structure of inside hollow, the bottom surface of load (2) is provided with piston (24), piston (24) is slidably connected with the inner wall surface of shell (1), the lower end of piston (24) is provided with first friction plate (3), the lower portion inside shell (1) is fixedly installed with passive shaft (4), passive shaft (4) is horizontally arranged, passive shaft (4) is slidably connected with second friction plate (5), second friction plate (5) is provided with at least two, first friction plate (3) is inserted between adjacent two second friction plate (5), first friction plate (3) is slidably connected with second friction plate (5), passive shaft (4) is further provided with adjusting device (6) of the clamping force between adjacent two second friction plate (5), adjusting device (6) includes electromagnet (61) and armature (62), electromagnet (61) is fixedly installed on one end of passive shaft (4), armature (62) is slidably installed on the other end of passive shaft (4), and second friction plate (5) is arranged between electromagnet (61) and armature (62).
2. An active suspension device according to claim 1, wherein Both ends of passive shaft (4) are fixedly connected with shell (1), passive shaft (4) includes first shaft section (41) and second shaft section (42), electromagnet (61) is installed on first shaft section (41), second friction plate (5) and armature (62) are both installed on second shaft section (42), and fixed structure for fixing the position of electromagnet (61) is arranged between first shaft section (41) and second shaft section (42).
3. An active suspension device according to claim 2, wherein The diameter of first shaft section (41) is less than the diameter of second shaft section (42) to form stepped surface (43), the fixed structure is stepped surface (43), electromagnet (61) abuts against stepped surface (43).
4. An active suspension device according to claim 1, wherein Passive shaft (4) is a spline structure, first spline hole is formed in second friction plate (5), second spline hole is formed in armature (62), and first spline hole and second spline hole are slidably connected with passive shaft (4).
5. An active suspension device according to claim 1, wherein First shaft hole (12) and second shaft hole (13) are arranged on the side wall surface of shell (1), first shaft hole (12) and second shaft hole (13) are oppositely arranged, both ends of passive shaft (4) are installed in first shaft hole (12) and second shaft hole (13) respectively, first end cover (14) is detachably installed on shaft hole (12), and second end cover (15) is detachably installed on second shaft hole (13).
6. An active suspension device according to claim 1, wherein The load (2) comprises a load block (21), the outer wall surface of the load block (21) is in sliding connection with the sliding hole (11), the top end of the load block (21) is provided with a mounting hole (22) for mounting an engine, and the load block (21) is further fixedly connected with a bottom plate (23) below, the bottom plate (23) is fixedly connected with a piston (24) below, and the outer wall surface of the piston (24) is in sliding connection with the inner wall surface of the shell (1).
7. An active suspension device according to claim 1, wherein Further comprising a driving shaft (7), both ends of the driving shaft (7) are fixedly installed at the bottom of the piston (24), the driving shaft (7) is parallel to the driven shaft (4), and the first friction plate (3) is in sliding connection with the driving shaft (7).
8. An active suspension device according to claim 7, wherein The piston (24) is a hollow structure with an open lower end, and the inner wall surface of the piston (24) is provided with the driving shaft (7).
9. An active suspension device according to claim 1, wherein The driving shaft (7) is a spline structure, the first friction plate (3) is provided with a third spline hole, and the third spline hole is in sliding connection with the driving shaft (7).
10. The active suspension device of claim 1, wherein The shell (1) comprises a shell body (16), the shell body (16) is open at the bottom end, the shell body (16) is detachably mounted with a base (17) at the bottom end, the base (17) seals the bottom end of the shell body (16), and the base (17) is provided with a fixing hole (18).