Switchable vehicle semi-active suspension and method thereof

Abstract

The invention relates to the technical field of vehicle suspensions, in particular to a switchable vehicle semi-active suspension which comprises a mounting block, a rotating shaft is rotationally mounted in the center of the mounting block, one end of the rotating shaft is connected with a wheel mounting disc, the top of the mounting block is connected with a supporting connecting rod, and the top of the supporting connecting rod is connected with a connecting plate. One end of the connecting plate is connected with a first mounting frame, the bottom of the mounting block is connected with a connecting bottom plate, one end of the connecting bottom plate is connected with two damping spring pieces, the top ends of the damping spring pieces are connected with a second mounting frame, and the damping spring pieces are connected with a buffer adjusting mechanism. According to the switchable vehicle semi-active suspension and the method thereof, by arranging the buffer adjusting mechanism, two damping modes are set for a vehicle and used for being suitable for different road conditions, the first-stage damping mode is used for the road conditions with small vibration, the second-stage damping mode is used for the road conditions with large vibration, and the vehicle experience can be greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle suspensions, and in particular to a switchable vehicle semi-active suspension and a method thereof. Background Art

[0002] Suspension is the general term for all force-transmitting connection devices between the frame (or load-bearing body) and the axle (or wheel) of a car. Its function is to transmit the force and torque acting between the wheel and the frame, and to buffer the impact force transmitted to the frame or body by the uneven road surface, and reduce the vibration caused thereby, so as to ensure that the car can run smoothly. The shock absorber is the main component that generates the damping force. Its function is to quickly attenuate the vibration of the car, improve the driving smoothness of the car, and enhance the adhesion between the wheel and the ground. In addition, the shock absorber can reduce the dynamic load of the car body and extend the service life of the car. The shock absorbers widely used in cars at present are mainly cylinder-type hydraulic shock absorbers. However, most of the existing vehicle shock absorbers have fixed structures and the shock absorption effect is the same. They cannot make adaptive adjustments when facing different road conditions, and this needs to be improved. Summary of the invention

[0003] The object of the present invention is to provide a switchable vehicle semi-active suspension and a method thereof to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a switchable vehicle semi-active suspension, comprising a mounting block, a rotating shaft rotatably mounted at the center of the mounting block, one end of the rotating shaft being connected to a wheel mounting plate, a supporting link being connected to the top of the mounting block, a connecting plate being connected to the top of the supporting link, one end of the connecting plate being connected to a first mounting frame, a connecting base plate being connected to the bottom of the mounting block, one end of the connecting base plate being connected to two groups of shock-absorbing spring members, the top end of the shock-absorbing spring member being connected to a second mounting frame, and the shock-absorbing spring member being connected to a buffer adjustment mechanism.

[0005] Preferably, the mounting block is rotatably connected to the supporting connecting rod and the connecting base plate.

[0006] Preferably, a sliding track is provided on the connecting plate, a connecting slider is slidably provided in the sliding track, the connecting slider and the top of the supporting connecting rod are movably connected, two groups of secondary shock-absorbing spring parts are provided in the sliding track, and the ends of the secondary shock-absorbing spring parts are fixed to the ends of the connecting slider.

[0007] Preferably, two groups of mounting clamping plates are welded on the side walls of the first mounting frame, two connecting ears are welded on the ends of the connecting plates, and the two connecting ears are rotatably mounted in the middle of the two groups of mounting clamping plates.

[0008] Preferably, a rotating connecting block is respectively provided at the upper and lower ends of the shock-absorbing spring member, the connecting base plate is a U-shaped structure, the rotating connecting blocks at the bottom of the two groups of shock-absorbing spring members are rotatably connected to the ends of the connecting base plate, a docking cross plate is provided on one side of the second mounting frame, and the rotating connecting blocks at the top of the two groups of shock-absorbing spring members are respectively rotatably connected to the two ends of the docking cross plate.

[0009] Preferably, the buffer adjustment mechanism includes a central tube, a connecting duct is provided at the upper end of each of the two groups of shock-absorbing spring parts, the connecting duct connects the interior of the shock-absorbing spring parts with the central tube, a secondary buffer disk is connected to each of the two ends of the central tube, and an electromagnetic valve is provided at the connection between the two ends of the central tube and the secondary buffer disk.

[0010] Preferably, a central cavity is provided inside the secondary buffer disk, and a plurality of side chambers connected to the central cavity are provided around the central cavity. An inner movable block is slidably provided inside the side chamber, and a buffer spring is connected between one side of the inner movable block and the inner end side wall of the side chamber.

[0011] Preferably, a sealing plate is provided on the top of the side chamber, the sealing plate is embedded above the side chamber, and the sealing plate is fixed on the side chamber by a plurality of screws.

[0012] Preferably, the secondary buffer disk is assembled by docking a fixed cover and a main disk body, a sealing ring is arranged inside the main disk body, a sealing groove is arranged inside the fixed cover, and the sealing ring is embedded in the sealing groove;

[0013] A plurality of corresponding fixed side grooves are provided on the side walls of the fixed cover and the main disk body, a first fixed clamping block is inserted in the fixed side groove of the side wall of the fixed cover, a second fixed clamping block is inserted in the fixed side groove of the side wall of the main disk body, a connecting bolt passes through the second fixed clamping block and is screwed into the first fixed clamping block, a clamping protrusion is provided at the bottom of the first fixed clamping block and the second fixed clamping block, a clamping groove is provided inside the fixed side groove, and the clamping protrusion is clamped in the clamping groove;

[0014] A side hole is provided on the side wall of the second fixed block, and a fixed socket is provided on one side of the connecting bolt, the fixed socket and the side hole are aligned, a rotating disk is rotatably installed on one side wall of the main disk body, a plurality of side frames are provided on the side wall of the rotating disk, each side frame corresponds to each group of the first fixed block and the second fixed block one by one, a fixed plug column is provided on the side wall at the end of the side frame, the fixed plug column corresponds to the side hole and the fixed socket, the end of the side frame is made of permanent magnet material, and the end of the side frame can be adsorbed on the side walls of the first fixed block and the second fixed block.

[0015] A method for adjusting a switchable semi-active suspension of a vehicle according to any one of the claims, comprising the following steps:

[0016] S1: monitor the vibration of the vehicle, set up multiple sets of sensors to monitor various vibration data during the vehicle's driving, and display the monitoring structure on the display screen;

[0017] S2: Select the adjustment method. The driver can select manual adjustment or automatic adjustment of shock absorption mode through the control panel.

[0018] S3: shock absorption mode adjustment. When the amplitude of vibration to which the vehicle is subjected is too large, the shock absorption effect is increased by manually or automatically adjusting the shock absorption mode. The vehicle usually adopts the first-level shock absorption mode. When it is subjected to a larger amplitude, the second-level shock absorption mode is adopted. When the second-level shock absorption mode is started, the solenoid valve is opened to connect the internal space of the shock absorbing spring component with the center tube and the second-level buffer disk. At this time, when the shock absorbing spring component is squeezed, the buffer inside the shock absorbing spring component can enter the center tube and the center cavity in the second-level buffer disk through the connecting conduit. Then the buffer squeezes the inner movable block to compress the buffer spring to provide additional buffer space, so that the shock absorbing spring component can continue to be compressed, thereby increasing the additional buffer stroke, thereby improving the shock absorption effect.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] 1. The present invention proposes a switchable vehicle semi-active suspension and method thereof. By providing a buffer adjustment mechanism, two shock absorption modes are provided for the vehicle to be suitable for different road conditions. The first shock absorption mode is used for road conditions with less vibration, and the second shock absorption mode is used for road conditions with greater vibration, which can greatly improve the vehicle experience.

[0021] 2. The vehicle normally adopts the primary shock absorption mode, and adopts the secondary shock absorption mode when it is subjected to a larger amplitude. When the secondary shock absorption mode is started, the solenoid valve is opened to connect the internal space of the shock absorbing spring component with the center tube and the secondary buffer disk. At this time, when the shock absorbing spring component is squeezed, the buffer inside the shock absorbing spring component can enter the center tube and the central cavity in the secondary buffer disk through the connecting conduit. Then the buffer squeezes the inner movable block to compress the buffer spring to provide additional buffer space, so that the shock absorbing spring component can continue to be compressed, thereby increasing the additional buffer stroke, thereby improving the shock absorption effect. When using the primary shock absorption mode, the solenoid valve is closed, and the structure inside the secondary buffer disk does not need to be used, thereby reducing losses.

[0022] 3. After the equipment has been used for a long time, faults may occur inside the secondary buffer disk, which needs to be disassembled and repaired. The secondary buffer disk is combined with the main disk body through a fixed cover, and then inserted into the respective fixed side grooves through the first fixed block and the second fixed block, and then fixed with connecting bolts. The clamping protrusion is clamped in the internal clamping groove of the fixed side groove, and the connection is stable and easy to disassemble and assemble; when the vehicle is driving, there will be high-frequency continuous vibration, which may cause the connecting bolts to loosen, and then cause the connection of the secondary buffer disk to be unstable. Structures such as a rotating disk, a side frame and a fixed plug column are provided. The side frame can be adsorbed on the side walls of the first fixed block and the second fixed block. At this time, the fixed plug column is inserted into the fixed socket through the side hole, thereby preventing the secondary buffer disk from loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the device of the present invention.

[0024] Figure 2 This is another perspective view of the device structure of the present invention.

[0025] Figure 3 This is a connection structure diagram of the shock-absorbing spring member of the present invention.

[0026] Figure 4 This is a schematic diagram of the structure of the secondary buffer disk of the present invention.

[0027] Figure 5 It is a schematic diagram of the structure of the first fixed card block and the second fixed card block of the present invention.

[0028] Figure 6 It is a schematic diagram of the structure of the rotating disk of the present invention.

[0029] Figure 7 This is a diagram showing the internal structure of the main disk body of the present invention.

[0030] Figure 8 This is a diagram of the internal connection structure of the central cavity of the present invention.

[0031] In the figure: mounting block 1, wheel mounting plate 2, direction adjustment rod connecting block 3, supporting connecting rod 4, connecting plate 5, first mounting frame 6, connecting base plate 7, shock absorbing spring member 8, second mounting frame 9, connecting conduit 10, center tube 11, secondary buffer disk 12, fixed cover 1201, main disk body 1202, fixed side groove 1203, sealing ring 1204, first fixed clamping block 1205, second fixed clamping block 1206, clamping protrusion 1207, connecting bolt 1208, side hole 1209, rotating disk 1210, side frame 1211, fixed plug column 1212, solenoid valve 13, central cavity 14, side cavity chamber 15, sealing plate 16, inner movable block 17, buffer spring 18. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figures 1 to 8 The present invention provides a technical solution: a switchable vehicle semi-active suspension, comprising a mounting block 1, a rotating shaft is rotatably mounted at the center of the mounting block 1, one end of the rotating shaft is connected to a wheel mounting plate 2, the top of the mounting block 1 is connected to a supporting link 4, the top of the mounting block 1 and the bottom of the supporting link 4 are rotatably connected, the top of the supporting link 4 is connected to a connecting plate 5, a sliding track is arranged on the connecting plate 5, a connecting slider is slidably arranged in the sliding track, the connecting slider and the top of the supporting link 4 are movably connected, two groups of secondary shock-absorbing spring members are arranged in the sliding track, and the ends of the secondary shock-absorbing spring members are fixed to the ends of the connecting sliders, which can play a buffering and compensation effect.

[0034] One end of the connecting plate 5 is connected to the first mounting frame 6, and two groups of mounting clamps are welded on the side wall of the first mounting frame 6. Two connecting ears are welded at the end of the connecting plate 5, and the two connecting ears are rotatably mounted in the middle of the two groups of mounting clamps. A connecting base plate 7 is connected to the bottom of the mounting block 1, and the bottom of the mounting block 1 is rotatably connected to the top surface of the connecting base plate 7. One end of the connecting base plate 7 is connected to two groups of shock-absorbing spring members 8, and a rotating connecting block is respectively arranged at the upper and lower ends of the shock-absorbing spring members 8. The connecting base plate 7 is a U-shaped structure, and the rotating connecting blocks at the bottom of the two groups of shock-absorbing spring members 8 are rotatably connected to the ends of the connecting base plate 7. A docking cross plate is arranged on one side of the second mounting frame 9, and the rotating connecting blocks at the top of the two groups of shock-absorbing spring members 8 are rotatably connected to the two ends of the docking cross plate.

[0035] The top end of the shock-absorbing spring component 8 is connected to a second mounting frame 9, and the shock-absorbing spring component 8 is connected to a buffer adjustment mechanism. The buffer adjustment mechanism includes a center tube 11. A connecting conduit 10 is provided at the upper end of each of the two groups of shock-absorbing spring components 8. The connecting conduit 10 connects the interior of the shock-absorbing spring component 8 with the center tube 11. A secondary buffer disk 12 is connected to each of the two ends of the center tube 11, and a solenoid valve 13 is provided at the connection between the two ends of the center tube 11 and the secondary buffer disk 12.

[0036] The secondary buffer disk 12 is assembled by docking a fixed cover 1201 and a main disk body 1202. A sealing ring 1204 is provided inside the main disk body 1202, and a sealing groove is provided inside the fixed cover 1201. The sealing ring 1204 is embedded in the sealing groove, thereby increasing the sealing effect of the two.

[0037] A central cavity 14 is provided inside the secondary buffer disk 12, and a plurality of side chambers 15 connected thereto are provided around the central cavity 14. A sealing plate 16 is provided on the top of the side chamber 15, and the sealing plate 16 is embedded in the upper part of the side chamber 15. The sealing plate 16 is fixedly mounted on the side chamber 15 by a plurality of screws. An inner movable block 17 is slidably provided inside the side chamber 15, and a buffer spring 18 is connected between one side of the inner movable block 17 and the inner end side wall of the side chamber 15. The vehicle usually adopts the primary shock absorption mode, and adopts the secondary shock absorption mode when subjected to a large amplitude. When the secondary shock absorption mode is started, the solenoid valve 13 is opened to make the vehicle The internal space of the shock-absorbing spring component 8 is connected with the central tube 11 and the secondary buffer disk 12. At this time, when the shock-absorbing spring component 8 is squeezed, the buffer inside the shock-absorbing spring component 8 can enter the central tube 11 and the central cavity 14 in the secondary buffer disk 12 through the connecting conduit 10, and then the buffer squeezes the internal movable block 17 to compress the buffer spring 18 to provide additional buffer space, so that the shock-absorbing spring component 8 can continue to be compressed to increase the additional buffer stroke, thereby improving the shock absorption effect. When using the first-level shock absorption mode, the solenoid valve 13 is closed, and the structure inside the secondary buffer disk 12 does not need to be used, thereby reducing losses.

[0038] A plurality of corresponding fixed side grooves 1203 are provided on the side walls of the fixed cover 1201 and the main disk body 1202. A first fixed clamping block 1205 is inserted into the fixed side groove 1203 of the side wall of the fixed cover 1201, and a second fixed clamping block 1206 is inserted into the fixed side groove 1203 of the side wall of the main disk body 1202. A connecting bolt 1208 passes through the second fixed clamping block 1206 and is screwed into the first fixed clamping block 1205. A clamping protrusion 1207 is provided at the bottom of the first fixed clamping block 1205 and the second fixed clamping block 1206. A clamping groove is provided inside the fixed side groove 1203, and the clamping protrusion 1207 is clamped into the clamping groove.

[0039] A side hole 1209 is provided on the side wall of the second fixed block 1206, and a fixed socket is provided on one side of the connecting bolt 1208. The fixed socket and the side hole 1209 are aligned. When the connecting bolt 1208 is used to connect the first fixed block 1205 and the second fixed block 1206, when the connecting bolt 1208 is screwed to the bottom, the side hole 1209 is automatically aligned with the fixed socket. A rotating disk 1210 is rotatably installed on one side wall of the main disk body 1202. A plurality of side frames 1211 are arranged on the side wall of 10, each side frame 1211 corresponds to each group of the first fixed block 1205 and the second fixed block 1206, a fixed plug post 1212 is arranged on the side wall at the end of the side frame 1211, the fixed plug post 1212 corresponds to the side hole 1209 and the fixed plug hole, the end of the side frame 1211 is made of permanent magnet material, and the end of the side frame 1211 can be adsorbed on the side wall of the first fixed block 1205 and the second fixed block 1206; when After the equipment has been used for a long time, the secondary buffer disk 12 may malfunction internally, and it needs to be disassembled and repaired. The secondary buffer disk 12 is combined with the main disk body 1202 through the fixed cover 1201, and then inserted into the respective fixed side grooves 1203 through the first fixed block 1205 and the second fixed block 1206, and then screwed and fixed with the connecting bolts 1208, and the clamping protrusions 1207 are clamped in the internal clamping grooves of the fixed side grooves 1203, so that the connection is stable and easy to disassemble and assemble; when the vehicle is driving, there will be high-frequency continuous vibration, which may cause the connecting bolts 1208 to loosen, and then cause the connection of the secondary buffer disk 12 to be unstable, and structures such as a rotating disk 1210, a side frame 1211 and a fixed plug 1212 are provided. The side frame 1211 can be adsorbed on the side walls of the first fixed block 1205 and the second fixed block 1206. At this time, the fixed plug 1212 is inserted into the fixed socket through the side hole 1209, thereby preventing the secondary buffer disk 12 from loosening.

[0040] A method for adjusting a switchable semi-active suspension of a vehicle comprises the following steps:

[0041] S1: monitor the vibration of the vehicle, set up multiple sets of sensors to monitor various vibration data during the vehicle's driving, and display the monitoring structure on the display screen;

[0042] S2: Select the adjustment method. The driver selects manual adjustment or automatic adjustment of the shock absorption mode through the control panel. The automatic mode is a control mode change of the vehicle internal control system. When the vibration value reaches a certain value, the shock absorption mode can be automatically changed to control the opening and closing of the solenoid valve 13.

[0043] S3: shock absorption mode adjustment. When the amplitude of vibration to which the vehicle is subjected is too large, the shock absorption effect is increased by manually or automatically adjusting the shock absorption mode. The vehicle normally adopts the first-level shock absorption mode. When it is subjected to a larger amplitude, the second-level shock absorption mode is adopted. When the second-level shock absorption mode is started, the solenoid valve 13 is opened to connect the internal space of the shock absorbing spring component 8 with the center tube 11 and the second-level buffer disk 12. At this time, when the shock absorbing spring component 8 is squeezed, the buffer inside the shock absorbing spring component 8 can enter the center tube 11 through the connecting conduit 10 and can enter the center cavity 14 in the second-level buffer disk 12. Then the buffer squeezes the inner movable block 17 to compress the buffer spring 18 to provide additional buffer space, so that the shock absorbing spring component 8 can continue to be compressed, thereby increasing the additional buffer stroke, thereby improving the shock absorption effect.

[0044] The present invention proposes a switchable vehicle semi-active suspension and method thereof. By providing a buffer adjustment mechanism, two shock absorption modes are provided for the vehicle to be suitable for different road conditions. The first shock absorption mode is used for road conditions with less vibration, and the second shock absorption mode is used for road conditions with greater vibration, which can greatly improve the vehicle experience. The vehicle normally adopts the primary shock absorption mode, and adopts the secondary shock absorption mode when it is subjected to a larger amplitude. When the secondary shock absorption mode is activated, the solenoid valve 13 is opened to connect the internal space of the shock absorbing spring component 8 with the central tube 11 and the secondary buffer disk 12. At this time, when the shock absorbing spring component 8 is squeezed, the buffer inside the shock absorbing spring component 8 can enter the central tube 11 through the connecting conduit 10 and can enter the central cavity 14 in the secondary buffer disk 12. Then the buffer squeezes the inner movable block 17 to compress the buffer spring 18 to provide additional buffer space, so that the shock absorbing spring component 8 can continue to be compressed, thereby increasing the additional buffer stroke, thereby improving the shock absorption effect. When using the primary shock absorption mode, the solenoid valve 13 is closed, and the structure inside the secondary buffer disk 12 does not need to be used, thereby reducing losses. The main structure of the shock absorbing spring component 8 is basically the same as the common devices on the existing market, but the shock absorption stroke is a little longer. In the primary shock absorption mode, the compressible stroke is the same, and it can be further compressed in the secondary shock absorption mode. After the equipment has been used for a long time, faults may occur inside the secondary buffer tray 12, which needs to be disassembled and repaired. The secondary buffer tray 12 is combined with the main tray body 1202 through the fixed cover 1201, and then inserted into the respective fixed side grooves 1203 through the first fixed block 1205 and the second fixed block 1206, and then screwed and fixed with the connecting bolts 1208, and the clamping protrusions 1207 are clamped in the internal clamping grooves of the fixed side grooves 1203, so that the connection is stable and easy to disassemble and assemble; when the vehicle is driving, there will be high-frequency continuous vibration, which may cause the connecting bolts 1208 to loosen, and then cause the connection of the secondary buffer tray 12 to be unstable, and structures such as a rotating disk 1210, a side frame 1211 and a fixed plug 1212 are provided. The side frame 1211 can be adsorbed on the side walls of the first fixed block 1205 and the second fixed block 1206. At this time, the fixed plug 1212 is inserted into the fixed socket through the side hole 1209, thereby preventing the secondary buffer tray 12 from loosening.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art 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 appended claims and their equivalents.

Claims

1. A switchable semi-active suspension for a vehicle, comprising a mounting block (1), characterized in that: A rotating shaft is rotatably mounted at the center of the mounting block (1), one end of the rotating shaft is connected to a wheel mounting plate (2), the top of the mounting block (1) is connected to a supporting connecting rod (4), the top of the supporting connecting rod (4) is connected to a connecting plate (5), one end of the connecting plate (5) is connected to a first mounting frame (6), the bottom of the mounting block (1) is connected to a connecting base plate (7), one end of the connecting base plate (7) is connected to two groups of shock-absorbing spring components (8), the top end of the shock-absorbing spring component (8) is connected to a second mounting frame (9), and the shock-absorbing spring component (8) is connected to a buffer adjustment mechanism.

2. A switchable vehicle semi-active suspension according to claim 1, characterized in that: The mounting block (1) is rotatably connected to the supporting connecting rod (4) and the connecting base plate (7).

3. The switchable vehicle semi-active suspension according to claim 1, characterized in that: The connecting plate (5) is provided with a sliding track, a connecting slider is slidably provided in the sliding track, the connecting slider is movably connected to the top of the supporting connecting rod (4), two groups of secondary shock-absorbing spring parts are provided in the sliding track, and the ends of the secondary shock-absorbing spring parts are fixed to the ends of the connecting slider.

4. The switchable vehicle semi-active suspension according to claim 1, characterized in that: Two groups of mounting clamping plates are welded on the side walls of the first mounting frame (6), and two connecting ears are welded on the ends of the connecting plates (5), and the two connecting ears are rotatably mounted in the middle of the two groups of mounting clamping plates.

5. The switchable vehicle semi-active suspension according to claim 1, characterized in that: The upper and lower ends of the shock-absorbing spring member (8) are each provided with a rotating connection block, the connecting base plate (7) is a U-shaped structure, the rotating connection blocks at the bottom of the two groups of shock-absorbing spring members (8) are rotatably connected to the ends of the connecting base plate (7), a docking cross plate is provided on one side of the second mounting frame (9), and the rotating connection blocks at the top of the two groups of shock-absorbing spring members (8) are respectively rotatably connected to the two ends of the docking cross plate.

6. The switchable semi-active suspension for a vehicle according to claim 1, characterized in that: The buffer adjustment mechanism comprises a central tube (11), a connecting conduit (10) is arranged at the upper end of each of the two groups of shock absorbing spring members (8), the connecting conduit (10) connects the interior of the shock absorbing spring members (8) and the central tube (11), a secondary buffer disk (12) is connected to each of the two ends of the central tube (11), and a solenoid valve (13) is arranged at each of the connection points between the two ends of the central tube (11) and the secondary buffer disk (12).

7. The switchable semi-active suspension for a vehicle according to claim 6, characterized in that: The secondary buffer disk (12) is provided with a central cavity (14) inside, and a plurality of side chambers (15) connected to the central cavity (14) are provided around the central cavity, and an inner movable block (17) is slidably provided inside the side chamber (15), and a buffer spring (18) is connected between a side surface of the inner movable block (17) and an inner end side wall of the side chamber (15).

8. The switchable semi-active suspension for a vehicle according to claim 7, characterized in that: A sealing plate (16) is provided on the top of the side chamber (15). The sealing plate (16) is embedded above the side chamber (15). The sealing plate (16) is fixed on the side chamber (15) by a plurality of screws.

9. The switchable semi-active suspension for a vehicle according to claim 6, characterized in that: The secondary buffer disk (12) is assembled by docking a fixed cover (1201) and a main disk body (1202); a sealing ring (1204) is arranged inside the main disk body (1202); a sealing groove is arranged inside the fixed cover (1201); and the sealing ring (1204) is embedded in the sealing groove; A plurality of groups of corresponding fixed side grooves (1203) are provided on the side walls of the fixed cover (1201) and the main disk body (1202); a first fixed clamping block (1205) is inserted into the fixed side groove (1203) of the side wall of the fixed cover (1201); a second fixed clamping block (1206) is inserted into the fixed side groove (1203) of the side wall of the main disk body (1202); a connecting bolt (1208) passes through the second fixed clamping block (1206) and is screwed into the first fixed clamping block (1205); a clamping protrusion (1207) is provided at the bottom of the first fixed clamping block (1205) and the second fixed clamping block (1206); a clamping groove is provided inside the fixed side groove (1203); the clamping protrusion (1207) is clamped into the clamping groove; A side hole (1209) is provided on the side wall of the second fixed block (1206), a fixed socket is provided on one side of the connecting bolt (1208), the fixed socket and the side hole (1209) are aligned, a rotating disk (1210) is rotatably mounted on one side wall of the main disk body (1202), a plurality of side frames (1211) are provided on the side wall of the rotating disk (1210), each side frame (1211) and each group of first fixed blocks are connected to each other. The first fixed block (1205) and the second fixed block (1206) correspond to each other one by one, and a fixed plug post (1212) is arranged on the side wall of the end of the side frame (1211), and the fixed plug post (1212) corresponds to the side hole (1209) and the fixed plug hole, and the end of the side frame (1211) is made of permanent magnet material, and the end of the side frame (1211) can be adsorbed on the side walls of the first fixed block (1205) and the second fixed block (1206).

10. A method for adjusting a switchable semi-active suspension of a vehicle according to any one of claims 1 to 9, characterized in that: The following steps are included: S1: monitor the vibration of the vehicle, set up multiple sets of sensors to monitor various vibration data during the vehicle's driving, and display the monitoring structure on the display screen; S2: Select the adjustment method. The driver can select manual adjustment or automatic adjustment of shock absorption mode through the control panel. S3: shock absorption mode adjustment. When the amplitude to which the vehicle is subjected is too large, the shock absorption mode is adjusted manually or automatically to increase the shock absorption effect. The vehicle normally adopts the primary shock absorption mode. When the amplitude to which the vehicle is subjected is relatively large, the secondary shock absorption mode is adopted. When the secondary shock absorption mode is activated, the solenoid valve (13) is opened so that the internal space of the shock absorption spring component (8) is connected with the interior of the central tube (11) and the secondary buffer disk (12). At this time, when the shock absorption spring component (8) is squeezed, the buffer inside the shock absorption spring component (8) can enter the central tube (11) and the central cavity (14) in the secondary buffer disk (12) through the connecting conduit (10). Then, the buffer squeezes the inner movable block (17) so that the buffer spring (18) is compressed to provide additional buffer space, thereby allowing the shock absorption spring component (8) to continue to be compressed, thereby increasing the additional buffer stroke, thereby improving the shock absorption effect.

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