Electronically controlled shock absorber with built-in proportional solenoid valve

Abstract

The present invention relates to the technical field of electronically controlled shock absorbers, and discloses an electronically controlled shock absorber with a built-in proportional solenoid valve, comprising a shock absorber housing and a solenoid valve body, wherein the shock absorber housing is fixed with a connecting pipe connected to the interior thereof, and the solenoid valve body is arranged at one end of the connecting pipe; the present invention also comprises: an annular fixing plate fixed to the end of the connecting pipe away from the shock absorber housing, an annular positioning plate fixed to the outer side of the solenoid valve body, and a sealing pipe for liquid circulation is fixed to the end of the annular positioning plate close to the annular fixing plate, and the sealing pipe and the connecting pipe are connected by a sealing ring. The present invention optimizes the existing detachable connection method between the solenoid valve and the piston, and the overall structural assembly of the solenoid valve body can be positioned on the outer side of the shock absorber through the designed fixing unit, so that the disassembly position of the solenoid valve body is better, eliminating the existing step of disassembling the shock absorber and the frame first, and shortening the time for maintenance and replacement of the solenoid valve.

Description

Technical Field

[0001] The invention relates to the technical field of electronically controlled shock absorbers, in particular to an electronically controlled shock absorber with a built-in proportional solenoid valve. Background Art

[0002] The electronically controlled shock absorber is mainly used to suppress the vibration caused by the rebound of the spring after shock absorption and the impact from the road surface. It fully filters the impact on the road surface by controlling the hardness of the shock absorber.

[0003] When the existing shock absorber is installed and used, it is necessary to manually adjust the damping of the shock absorber, which is very troublesome and impractical. At the same time, the solenoid valve is placed outside the shock absorber, which is easy to be damaged, bringing certain adverse effects to people's use process. In order to facilitate the adjustment of the damping, the existing Chinese patent document CN202322335843.4 discloses an electrically controlled shock absorber with adjustable damping and a normally closed built-in solenoid valve. The piston and the solenoid valve can be disassembled and connected through the provided threaded column and threaded hole, which is convenient for replacement and maintenance of the device.

[0004] Although the solenoid valve and the piston in the above scheme can be detachably connected, since the piston end is connected to the frame shock absorber spring, the piston end and the frame need to be disassembled before the solenoid valve and the piston can be disassembled during actual maintenance and use, resulting in a large workload during replacement and maintenance. In addition, the detachable connection using threads is sometimes affected by external vibrations, which may cause the threads to loosen, thereby affecting the stability and safety of the connection between the piston and the solenoid valve. Summary of the invention

[0005] The object of the present invention is to provide an electronically controlled shock absorber with a built-in proportional solenoid valve, so as to solve the problem of heavy workload in replacing and maintaining the solenoid valve proposed in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an electronically controlled shock absorber with a built-in proportional solenoid valve, comprising a shock absorber housing and a solenoid valve body, the shock absorber housing being fixed with a connecting pipe connected to the interior thereof, and the solenoid valve body being arranged at one end of the connecting pipe; further comprising: an annular fixing plate fixed to an end of the connecting pipe away from the shock absorber housing, an annular positioning plate being fixed to the outer side of the solenoid valve body, a sealing pipe for liquid circulation being fixed to the end of the annular positioning plate close to the annular fixing plate, the sealing pipe and the connecting pipe being connected by a sealing ring, four groups of fixing units being distributed in an annular array on the annular fixing plate, an installation cavity being arranged inside the annular fixing plate, and a transmission unit being installed in the installation cavity; a rotating unit installed on the annular fixing plate, the output end of the rotating unit being transmission-connected to the transmission unit, a limiter and a hidden member being respectively arranged on both sides of the annular fixing plate, and the limiter and the hidden member being respectively installed at both ends of the rotating unit.

[0007] Preferably, the fixing unit includes a rotating tube with an internal thread, the rotating tube is connected to a moving screw via the internal thread, a clamping plate is fixed to one end of the moving screw, the inner side of the clamping plate is pressed and matched with one side of the annular positioning plate, a locking pin is fixed to the end of the clamping plate away from the moving screw, a locking hole is provided between the annular fixing plate and the annular positioning plate for sliding insertion with the locking pin, first end covers are fixed on both sides of the annular fixing plate, a bearing is provided on the inner side of the first end cover, the rotating tube is rotationally limited by the bearing and the annular fixing plate, and the designed fixing unit can quickly fix the annular fixing plate and the annular positioning plate, so that the overall structural assembly of the solenoid valve body is positioned on the outside of the shock absorber, thereby optimizing the existing detachable connection method between the solenoid valve and the piston, and shortening the time for maintenance and replacement of the solenoid valve.

[0008] Preferably, the transmission unit includes a limiting ring fixed in the internal mounting cavity of the annular fixed plate, the outer side of the limiting ring is rotatably connected to a transmission gear ring, four groups of transmission gears are evenly distributed on the outer side of the transmission gear ring, the transmission gears are interference fit connected to the rotating tube, the output end of the rotating unit is transmission connected to the transmission gear, and the designed transmission unit can transmit power to fixed units in four positions at one time, which makes multi-point positioning of the solenoid valve more convenient and quick.

[0009] Preferably, the rotating unit includes a second end cover fixedly connected to one side of the annular fixing plate, a bearing is provided on the inner side of the second end cover, a driving rod is rotatably connected to the annular fixing plate through the bearing, a driving gear is interference-connected in the middle of the driving rod, the driving gear is meshingly connected with the transmission gear ring, the limiting part and the hidden part are respectively provided on the outer sides of both ends of the driving rod, and the designed rotating unit can rotate the transmission unit.

[0010] Preferably, the limiting member includes a movable rod that slides through and is connected to one end of the second end cover, a limiting block is fixed to one end of the movable rod located inside the second end cover, a first spring is fixed to one end of the driving rod, the other end of the first spring is fixed to the inner wall of the second end cover, and a limiting groove that matches the limiting block is also provided at one end of the driving rod. The designed limiting member can limit the driving rod to prevent it from rotating due to external vibration, so that the fixing unit will not loosen, thereby improving the stability and safety of the connection between the shock absorber and the solenoid valve.

[0011] Preferably, the hidden part includes a sealing cover fixedly connected to the outer side of the annular fixing plate, the sealing cover hides one end of the driving rod, and the end of the sealing cover away from the annular fixing plate is rotatably connected to a rotating plate through a hinge, and the rotating plate just closes the end of the sealing cover. A locking part is provided at the bottom of the rotating plate. The designed hidden part can hide the driving rod to prevent criminals from discovering the driving rod and rotating it, and then disassembling the solenoid valve body to commit theft.

[0012] Preferably, the locking member includes a first fixing block fixedly connected to the bottom end of the rotating plate, a second fixing block matching the first fixing block is fixed on the outer side of the sealing cover, the first fixing block and the second fixing block are seamlessly connected, and a fixing nail is slidably and interlacedly connected between the first fixing block and the second fixing block, a fixing cylinder is fixed on the side of the second fixing block away from the first fixing block, an iron ring is provided inside the fixing cylinder, the iron ring is sleeved on the outer side of the fixing nail, one end of the fixing nail is located inside the fixing cylinder, an iron ball is movably connected to one side of the iron ring, and a second spring is fixed on the other side of the iron ring, one end of the second spring away from the iron ring is fixedly connected to the inner wall of the fixing cylinder, a tightening groove matching the iron ball is provided on the outer side of the fixing nail, and one end of the fixing nail located outside the fixing cylinder is pressed and matched with one side of the first fixing block. The designed locking member has the effect that the working principle is not easily discovered, and can also be easily disassembled and opened to facilitate the operator to rotate the driving rod.

[0013] Preferably, a telescopic dust cover is provided on the outer side of the movable screw, one end of the movable screw is fixedly connected to the inside of the telescopic dust cover, and one end of the telescopic dust cover is fixedly connected to the first end cover. The designed telescopic dust cover can perform dust-proof treatment on the movable screw to prevent the movable screw exposed to the outside from rusting.

[0014] Preferably, a hexagonal groove is formed at one end of the driving rod located inside the sealing cover, and the hexagonal groove is compatible with a standard hexagonal wrench, so that the user can rotate it conveniently.

[0015] Preferably, rectangular through grooves are provided on the outer side of the annular positioning plate, and the number of the rectangular through grooves is equal to the number of the clamping plates, so that the operator can conveniently take out and put in the solenoid valve when installing it.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention optimizes the existing detachable connection between the solenoid valve and the piston. The overall structural assembly of the solenoid valve body can be positioned on the outside of the shock absorber through the designed fixing unit. The disassembly position of the solenoid valve body is better, eliminating the existing step of disassembling the shock absorber and the frame first, and shortening the time for maintenance and replacement of the solenoid valve.

[0018] 2. The hidden part designed in the present invention can hide the rotating unit, preventing criminals from discovering the driving rod and rotating it, and then disassembling the solenoid valve body to steal. Compared with the existing connection method using bolts exposed to the outside world, it is safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of the local structure of the present invention;

[0021] Figure 3 It is a schematic cross-sectional structural diagram of a single group of fixing units of the present invention;

[0022] Figure 4 It is a structural schematic diagram of the transmission unit of the present invention;

[0023] Figure 5 It is a schematic cross-sectional structural diagram of the rotating unit of the present invention;

[0024] Figure 6 It is a structural schematic diagram of the position limiting member of the present invention;

[0025] Figure 7 It is a schematic diagram of the structure of the hidden part and the locking part of the present invention;

[0026] Figure 8 It is a structural schematic diagram of the movable screw and the telescopic dust cover of the present invention;

[0027] Fig. 9 It is a structural schematic diagram of the annular positioning plate of the present invention;

[0028] Fig.10 It is a schematic structural diagram of the fixing nail of the present invention.

[0029] In the figure: 1, shock absorber housing; 2, solenoid valve body; 3, connecting pipe; 4, annular fixing plate; 5, annular positioning plate; 6, sealing pipe; 7, fixing unit; 8, transmission unit; 9, rotating unit; 10, limiting member; 11, hidden member; 12, rotating tube; 13, moving screw; 14, pressing plate; 15, locking pin; 16, locking hole; 17, first end cover; 18, limiting ring; 19, transmission gear ring; 20, transmission gear; 21, first end cover; 22, first end cover; 23, first end cover; 24, first end cover; 25, first end cover; 26, first end cover; 27, first end cover; 28, first end cover; 29, first end cover; 30, first end cover; 31, first end cover; 32, first end cover; 33, first end cover; 34, first end cover; 35, first end cover; 36, first end cover; 37, first end cover; 38, first end cover; 39, first end cover; 40, first end cover; 41, first end cover; 42, first end cover; 43, first end cover; 44, first end cover; 45, first end cover; 46, first end cover; 47, first end cover; 48, first end cover; 49, first end cover; 50, first end cover; 51, first end cover; 52, first end cover; 53, first end cover; 54, first end cover; 55, first end cover; 56, first end cover; 57, first end cover; 58, first end cover; 59, first end cover; 60, first end cover; 61, first end cover; 62, first end cover; 63, first end cover; 64, first end cover; 65, first end cover; 66 Two end covers; 22. Drive rod; 23. Drive gear; 24. Movable rod; 25. Limit block; 26. First spring; 27. Limit groove; 28. Sealing cover; 29. ​​Rotating plate; 30. Locking piece; 31. First fixed block; 32. Second fixed block; 33. Fixing nail; 34. Fixing cylinder; 35. Iron ring; 36. Iron bead; 37. Second spring; 38. Tightening groove; 39. Telescopic dust cover; 40. Hexagonal groove; 41. Rectangular through groove. DETAILED DESCRIPTION

[0030] 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.

[0031] Example 1: Please refer to Figure 1 and Figure 2 The electronically controlled shock absorber with a built-in proportional solenoid valve shown in the figure comprises a shock absorber housing 1 and a solenoid valve body 2. The shock absorber housing 1 is fixed with a connecting pipe 3 connected to the inside thereof. The solenoid valve body 2 is arranged at one end of the connecting pipe 3. The solenoid valve body 2 can regulate the flow direction and flow rate of the liquid so that the liquid enters the piston inside the shock absorber through the connecting pipe 3, thereby adaptively adjusting the damping according to the pressure ratio.

[0032] It also includes: an annular fixing plate 4 fixed to the end of the connecting pipe 3 away from the shock absorber housing 1, an annular positioning plate 5 is fixed to the outer side of the solenoid valve body 2, and a sealing pipe 6 for liquid circulation is fixed to the end of the annular positioning plate 5 close to the annular fixing plate 4, and the sealing pipe 6 and the connecting pipe 3 are connected by a sealing ring. Four groups of fixing units 7 are distributed in an annular array on the annular fixing plate 4, and an installation cavity is provided inside the annular fixing plate 4, and a transmission unit 8 is installed in the installation cavity. When disassembling, it is only necessary to drive the output ends of the four groups of fixing units 7 to move through the transmission unit 8, so as to quickly release the limiting effect of the four positions between the annular positioning plate 5 and the annular fixing plate 4, so as to facilitate the disassembly of the solenoid valve;

[0033] A rotating unit 9 is installed on the annular fixing plate 4, and the output end of the rotating unit 9 is transmission-connected with the transmission unit 8. The rotating unit 9 is convenient for the user to operate the transmission unit 8 for rotation. A limit piece 10 and a hidden piece 11 are respectively provided on both sides of the annular fixing plate 4. The limit piece 10 and the hidden piece 11 are respectively installed at both ends of the rotating unit 9, and the limit piece 10 and the hidden piece 11 can optimize the use effect of the rotating unit 9.

[0034] In summary, in the present solution, by optimizing the existing detachable connection method between the solenoid valve and the piston, the overall structural assembly of the solenoid valve body 2 can be positioned on the outside of the shock absorber through the designed fixing unit 7, and the disassembly position of the solenoid valve body 2 is better, thereby eliminating the existing step of disassembling the shock absorber and the frame first, and shortening the time for maintenance and replacement of the solenoid valve.

[0035] For further information, see Figure 3 The fixing unit 7 includes a rotating tube 12 with an internal thread inside, and the rotating tube 12 is connected to a moving screw 13 through the internal thread. A clamping plate 14 is fixed to one end of the moving screw 13. The inner side of the clamping plate 14 is pressed and matched with one side of the annular positioning plate 5. A locking pin 15 is fixed to the end of the clamping plate 14 away from the moving screw 13. A locking hole 16 for slidingly plugging with the locking pin 15 is opened between the annular fixing plate 4 and the annular positioning plate 5. First end covers 17 are fixed on both sides of the annular fixing plate 4 respectively, and a bearing is provided on the inner side of the first end cover 17. The rotating tube 12 is rotationally limited by the bearing and the annular fixing plate 4.

[0036] The principle of installing the solenoid valve body 2 is: first, insert the sealing pipe 6 at one end of the solenoid valve body 2 into the connecting pipe 3 at the corresponding position, and make the annular fixing plate 4 and the annular positioning plate 5 in close contact, then rotate the solenoid valve body 2, make the locking holes 16 on the annular fixing plate 4 and the annular positioning plate 5 correspond one to one, and then operate the rotating unit 9 to drive the transmission unit 8 to transmit, and the transmission unit 8 drives the four rotating tubes 12 to rotate synchronously, and the four rotating tubes 12 drive the four moving screws 13 to move together, thereby driving the clamping plate 14 at one end to move, and let the locking pin 15 on the clamping plate 14 be correspondingly inserted in the locking hole 16 until the clamping plate 14 is pressed on the annular positioning plate 5, thereby completing the quick installation between the solenoid valve body 2 and the connecting pipe 3.

[0037] For further information, see Figure 4 The transmission unit 8 includes a limit ring 18 fixed in the internal mounting cavity of the annular fixing plate 4, and the outer side of the limit ring 18 is rotatably connected with a transmission gear ring 19. Four groups of transmission gears 20 are evenly distributed on the outer side of the transmission gear ring 19. The transmission gear 20 is connected to the rotating tube 12 by interference fit, and the output end of the rotating unit 9 is transmission-connected to the transmission gear 20.

[0038] The principle of the transmission unit 8 driving the rotating tube 12 to rotate is as follows: by operating the rotating unit 9 to rotate, the output end of the rotating unit 9 will drive the transmission gear ring 19 to rotate. Since four groups of transmission gears 20 are evenly meshed on the outer side of the transmission gear ring 19, the rotation of the transmission gear ring 19 will drive the four groups of transmission gears 20 to rotate synchronously. Each transmission gear 20 is fixed with a rotating tube 12, thereby causing the four rotating tubes 12 to rotate together.

[0039] For further information, see Figure 5 The rotating unit 9 includes a second end cover 21 fixedly connected to one side of the annular fixing plate 4, a bearing is provided on the inner side of the second end cover 21, a driving rod 22 is rotatably connected to the annular fixing plate 4 through the bearing, a driving gear 23 is interference-connected in the middle of the driving rod 22, the driving gear 23 is meshed and connected with the transmission gear ring 19, and the limiting member 10 and the hidden member 11 are respectively provided on the outer sides of both ends of the driving rod 22;

[0040] In order to facilitate the user to rotate, a hexagonal groove 40 is formed at one end of the driving rod 22 located inside the sealing cover 28, and the hexagonal groove 40 is compatible with a standard hexagonal wrench.

[0041] The principle of the rotating unit 9 driving the transmission gear ring 19 to rotate is as follows: the user inserts the end of the hexagonal wrench into the hexagonal slot 40, and then operates the hexagonal wrench to rotate the drive rod 22, and the drive rod 22 drives the drive gear 23 to rotate, which in turn drives the transmission gear ring 19 to rotate.

[0042] For further information, see Fig. 9 , a rectangular through slot 41 is formed on the outer side of the annular positioning plate 5, and the number of the rectangular through slots 41 is equal to the number of the pressing plates 14;

[0043] It should be noted that when taking out or putting in the annular positioning plate 5 , the solenoid valve body 2 needs to be slightly rotated at a certain angle so that the rectangular through groove 41 on the annular positioning plate 5 is aligned with the position of the clamping plate 14 , so as not to block the movement of the annular positioning plate 5 .

[0044] Example 2: Please refer to Figure 6 , Figure 7 and Fig.10 This embodiment further explains the first embodiment, and the difference lies in optimizing the use environment of the driving rod 22.

[0045] Specifically, the limiting member 10 includes a movable rod 24 that is slidably connected to one end of the second end cover 21, and a limiting block 25 is fixed to one end of the movable rod 24 located inside the second end cover 21. A first spring 26 is fixed to one end of the driving rod 22, and the other end of the first spring 26 is fixed to the inner wall of the second end cover 21. A limiting groove 27 that is adapted to the limiting block 25 is also formed at one end of the driving rod 22.

[0046] It should be noted that: through the cooperation of the limit block 25 and the limit groove 27 and the elastic force of the first spring 26, the driving rod 22 can be locked, and then the driving rod 22 can be limited to prevent it from rotating due to external vibration, so that the fixing unit 7 will not loosen, thereby improving the stability and safety of the connection between the shock absorber and the solenoid valve; when releasing the locking effect, it is only necessary to pull the movable rod 24 to move, so that the limit block 25 at one end of the movable rod 24 is moved out of the limit groove 27.

[0047] At the same time, the hidden part 11 includes a sealing cover 28 fixedly connected to the outer side of the annular fixing plate 4, the sealing cover 28 hides one end of the driving rod 22, and the end of the sealing cover 28 away from the annular fixing plate 4 is rotatably connected to a rotating plate 29 through a hinge, and the rotating plate 29 just closes the end of the sealing cover 28, and a locking member 30 is provided at the bottom of the rotating plate 29;

[0048] It should be noted that: since one end of the driving rod 22 is sealed by the second end cover 21 and the other end is sealed by the sealing cover 28, the driving rod 22 is completely hidden on the annular fixing plate 4 after installation and will not be exposed to the outside world, thereby preventing criminals from disassembling the solenoid valve body 2 and stealing it.

[0049] At the same time, it is worth noting that the locking member 30 includes a first fixed block 31 fixedly connected to the bottom end of the rotating plate 29, a second fixed block 32 matched with the first fixed block 31 is fixed to the outer side of the sealing cover 28, the first fixed block 31 and the second fixed block 32 are seamlessly connected, and a fixing nail 33 is slidably inserted and connected between the first fixed block 31 and the second fixed block 32, a fixing cylinder 34 is fixed to the side of the second fixed block 32 away from the first fixed block 31, an iron ring 35 is provided inside the fixing cylinder 34, the iron ring 35 is sleeved on the outer side of the fixing nail 33, one end of the fixing nail 33 is located inside the fixing cylinder 34, an iron ball 36 is movably connected to one side of the iron ring 35, and a second spring 37 is fixed to the other side of the iron ring 35, one end of the second spring 37 away from the iron ring 35 is fixedly connected to the inner wall of the fixing cylinder 34, a tightening groove 38 matched with the iron ball 36 is provided on the outer side of the fixing nail 33, and one end of the fixing nail 33 located outside the fixing cylinder 34 is pressed and matched with one side of the first fixed block 31;

[0050] Locking principle: Since there is a pair of tightening grooves 38 on the rod of the fixing nail 33, when the fixing nail 33 is inserted between the first fixing block 31, the second fixing block 32 and the fixing tube 34, the iron ball 36 will slide to the position of the tightening groove 38 on the fixing nail 33, and the iron ring 35 on one side of the iron ball 36 will firmly clamp the iron ball 36 in the tightening groove 38 under the pressure of the second spring 37, so that the fixing nail 33 cannot be pulled out.

[0051] Unlocking principle: When a strong magnet is applied to the top of one side of the fixed tube 34 (this can only be done if the designer informs the operator), the iron ring 35 and the iron ball 36 are attracted by the strong magnet and compress the second spring 37 to move, so that the fixing nail 33 can be easily taken out from the mouth, thereby quickly releasing the locking effect between the rotating plate 29 and the sealing cover 28.

[0052] Example 3: Please refer to Figure 8 This embodiment further illustrates other embodiments, and the difference lies in that the use environment of the moving screw 13 is optimized.

[0053] Specifically, the fixing unit 7 includes a rotating tube 12 with an internal thread, the rotating tube 12 is connected to a moving screw 13 through the internal thread, a clamping plate 14 is fixed to one end of the moving screw 13, the inner side of the clamping plate 14 is pressed and matched with one side of the annular positioning plate 5, a locking pin 15 is fixed to the end of the clamping plate 14 away from the moving screw 13, a locking hole 16 for slidingly plugging with the locking pin 15 is opened between the annular fixing plate 4 and the annular positioning plate 5, first end covers 17 are fixed to both sides of the annular fixing plate 4, a bearing is provided on the inner side of the first end cover 17, and the rotating tube 12 is rotationally limited with the annular fixing plate 4 through the bearing; a telescopic dust cover 39 is provided on the outer side of the moving screw 13, one end of the moving screw 13 is fixedly connected to the inside of the telescopic dust cover 39, and one end of the telescopic dust cover 39 is fixedly connected to the first end cover 17.

[0054] It should be noted that: by putting the telescopic dustproof sleeve 39 on the outside of the moving screw 13, the moving screw 13 can be dust-proofed to prevent the moving screw 13 exposed to the outside from rusting; at the same time, since the telescopic dustproof sleeve 39 has a shrinking effect, one end of the moving screw 13 can pull it to shrink, thereby limiting the moving screw 13 and preventing it from rotating with the rotation of the rotating tube 12.

[0055] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0056] 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. Electrically controlled shock absorber with built-in proportional solenoid valve, including: A shock absorber housing (1) and a solenoid valve body (2), wherein the shock absorber housing (1) is fixed with a connecting pipe (3) which is in communication with the interior thereof, and the solenoid valve body (2) is arranged at one end of the connecting pipe (3); It is characterized by: also including: An annular fixing plate (4) is fixed to the end of the connecting pipe (3) away from the shock absorber housing (1), an annular positioning plate (5) is fixed to the outside of the solenoid valve body (2), a sealing pipe (6) for liquid circulation is fixed to the end of the annular positioning plate (5) close to the annular fixing plate (4), the sealing pipe (6) and the connecting pipe (3) are connected via a sealing ring, four groups of fixing units (7) are distributed in an annular array on the annular fixing plate (4), an installation cavity is provided inside the annular fixing plate (4), and a transmission unit (8) is installed in the installation cavity; A rotating unit (9) is mounted on the annular fixed plate (4), the output end of the rotating unit (9) being in transmission connection with the transmission unit (8), and a limiter (10) and a hidden member (11) are respectively provided on both sides of the annular fixed plate (4), and the limiter (10) and the hidden member (11) are respectively mounted on both ends of the rotating unit (9); the fixed unit (7) comprises a rotating tube (12) having an internal thread, the rotating tube (12) being connected to a moving screw (13) via the internal thread, a pressing plate (14) being fixed to one end of the moving screw (13), the inner side of the pressing plate (14) being pressed and matched with one side of the annular positioning plate (5), and the pressing plate (14) is pressed and matched with the inner side of the pressing plate (14) 4) A locking pin (15) is fixed at one end away from the moving screw (13); a locking hole (16) for slidingly plugging with the locking pin (15) is provided between the annular fixing plate (4) and the annular positioning plate (5); first end covers (17) are fixed on both sides of the annular fixing plate (4); a bearing is provided on the inner side of the first end cover (17); the rotating tube (12) is rotationally limited with the annular fixing plate (4) through the bearing; the transmission unit (8) comprises a limiting ring (18) fixed in the internal mounting cavity of the annular fixing plate (4); the outer side of the limiting ring (18) is rotatably connected to a transmission gear ring (19); the outer side of the transmission gear ring (19) is evenly distributed Four groups of transmission gears (20) are arranged, the transmission gears (20) are connected to the rotating tube (12) by interference fit, and the output end of the rotating unit (9) is transmission-connected to the transmission gears (20); the rotating unit (9) comprises a second end cover (21) fixedly connected to one side of the annular fixing plate (4), a bearing is provided on the inner side of the second end cover (21), a driving rod (22) is rotationally connected to the annular fixing plate (4) through the bearing, a driving gear (23) is interference-connected at the middle part of the driving rod (22), the driving gear (23) is meshingly connected to the transmission gear ring (19), the limiting member (10) and the hidden member (11) are respectively provided at the ends of the second end cover (21) and the second end cover (21). The outer sides of both ends of the driving rod (22); the limiting member (10) includes a movable rod (24) slidably connected to one end of the second end cover (21); a limiting block (25) is fixed at one end of the movable rod (24) located inside the second end cover (21); a first spring (26) is fixed to one end of the driving rod (22); the other end of the first spring (26) is fixed to the inner wall of the second end cover (21); a limiting groove (27) adapted to the limiting block (25) is also formed at one end of the driving rod (22); a rectangular through groove (41) is formed on the outer side of the annular positioning plate (5); the number of the rectangular through grooves (41) is equal to the number of the clamping plate (14).

2. The electronically controlled shock absorber with a built-in proportional solenoid valve according to claim 1, characterized in that: The hidden part (11) comprises a sealing cover (28) fixedly connected to the outer side of the annular fixing plate (4), the sealing cover (28) hiding one end of the driving rod (22), and one end of the sealing cover (28) away from the annular fixing plate (4) is rotatably connected to a rotating plate (29) via a hinge, the rotating plate (29) just closes the end of the sealing cover (28), and a locking part (30) is provided at the bottom of the rotating plate (29).

3. The electronically controlled shock absorber with a built-in proportional solenoid valve according to claim 2, characterized in that: The locking member (30) comprises a first fixing block (31) fixedly connected to the bottom end of the rotating plate (29); a second fixing block (32) matching the first fixing block (31) is fixedly provided on the outer side of the sealing cover (28); the first fixing block (31) and the second fixing block (32) are seamlessly connected; a fixing nail (33) is slidably inserted between the first fixing block (31) and the second fixing block (32); a fixing cylinder (34) is fixedly provided on a side of the second fixing block (32) away from the first fixing block (31); an iron ring (35) is provided inside the fixing cylinder (34); the iron ring (35) The fixing pin (33) is sleeved on the outside of the fixing pin (33), one end of the fixing pin (33) is located inside the fixing tube (34), one side of the iron ring (35) is movably connected with an iron bead (36), the other side of the iron ring (35) is fixed with a second spring (37), one end of the second spring (37) away from the iron ring (35) is fixedly connected to the inner wall of the fixing tube (34), the outer side of the fixing pin (33) is provided with a tightening groove (38) matched with the iron bead (36), and one end of the fixing pin (33) located outside the fixing tube (34) is pressed and matched with one side of the first fixing block (31).

4. The electronically controlled shock absorber with a built-in proportional solenoid valve according to claim 1, characterized in that: A telescopic dust cover (39) is provided on the outer side of the movable screw rod (13), one end of the movable screw rod (13) is fixedly connected to the inside of the telescopic dust cover (39), and one end of the telescopic dust cover (39) is fixedly connected to the first end cover (17).

5. The electronically controlled shock absorber with a built-in proportional solenoid valve according to claim 2, characterized in that: An inner hexagonal groove (40) is formed at one end of the driving rod (22) located inside the sealing cover (28), and the inner hexagonal groove (40) is compatible with a standard inner hexagonal wrench.

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