Combined type automobile shock absorber convenient to install and preparation method of combined type automobile shock absorber

Abstract

The invention relates to the technical field of automobile shock absorbers, and discloses a combined type automobile shock absorber convenient to install and a preparation method thereof.The combined type automobile shock absorber comprises a main body mechanism, an auxiliary mechanism is arranged at the top of the main body mechanism, and a buffering mechanism is arranged in the main body mechanism; the main body mechanism comprises a first mounting plate, the top of the first mounting plate is fixedly connected with an outer cylinder, the interior of the outer cylinder is fixedly connected with a bottom valve, the interior of the outer cylinder is movably connected with a piston, the top of the piston is fixedly connected with a piston rod, and the top of the outer cylinder is fixedly connected with an oil seal; the auxiliary mechanism comprises a second mounting plate, a sleeve is fixedly connected to the bottom of the second mounting plate, and a damping spring is arranged at the bottom of the second mounting plate; the buffering mechanism comprises a lead screw, and the surface of the lead screw is in threaded connection with a connecting plate. According to the combined type automobile shock absorber convenient to install and the preparation method thereof, the effects of being easy and convenient to install and good in shock absorption effect are achieved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of automobile shock absorbers, in particular to a combined automobile shock absorber convenient to install and a preparation method thereof. BACKGROUND

[0002] The term "shock absorber" is a general term in the automobile chassis industry, and an automobile shock absorber is actually a vibration damper. The shock absorber is not only used in suspension in an automobile, but also applied in other positions. For example, the shock absorber is used in a driver's cabin, a seat, a steering wheel, etc., and can also be used as a bumper on a vehicle bumper. In a suspension system, a shock absorber is installed in parallel with an elastic element to improve the riding comfort of an automobile. The shock absorber used in the suspension system of an automobile is usually a hydraulic shock absorber. When a frame (or a vehicle body) and an axle have relative movement due to vibration, a piston in the shock absorber moves up and down, and oil in a cavity of the shock absorber repeatedly flows into another cavity through different apertures. At this time, the friction between the aperture wall and the oil and the internal friction between the oil molecules form a damping force for the vibration, so that the vibration energy of the automobile is converted into heat energy of the oil, and then the heat energy is absorbed by the shock absorber and dissipated into the atmosphere. When the cross section of the oil passage and other factors remain unchanged, the damping force increases or decreases with the increase or decrease of the relative movement speed between the frame and the axle (or the wheel), and is related to the viscosity of the oil.

[0003] Therefore, the application provides a combined automobile shock absorber convenient to install and a preparation method thereof to solve the problems of inconvenient installation and poor damping effect of the traditional automobile shock absorber. SUMMARY

[0004] The application aims to provide a combined automobile shock absorber convenient to install and a preparation method thereof to solve the problems of inconvenient installation and poor damping effect of the traditional automobile shock absorber.

[0005] In order to solve the above technical problems, the application provides the following technical scheme: a combined automobile shock absorber convenient to install and a preparation method thereof, which comprises a main body mechanism, an auxiliary mechanism is arranged at the top of the main body mechanism, and a buffer mechanism is arranged in the main body mechanism.

[0006] The main body mechanism comprises a first mounting plate, an outer cylinder is fixedly connected to the top of the first mounting plate, a bottom valve is fixedly connected to the inner side of the outer cylinder, a piston is movably connected to the inner side of the outer cylinder, a piston rod is fixedly connected to the top of the piston, and an oil seal is fixedly connected to the top of the outer cylinder.

[0007] The auxiliary mechanism comprises a second mounting plate, a sleeve is fixedly connected to the bottom of the second mounting plate, and a shock absorbing spring is arranged at the bottom of the second mounting plate.

[0008] Preferably, the first mounting plate bottom is provided with a first threaded hole, a lower connecting rod is threadedly connected in the first threaded hole, and a lower connecting ring is fixedly connected to an end of the lower connecting rod away from the first mounting plate.

[0009] Preferably, the second mounting plate top is provided with a second threaded hole in the opposite direction of the first threaded hole in the first mounting plate bottom, an upper connecting rod is threadedly connected in the second threaded hole, an upper connecting ring is fixedly connected to an end of the upper connecting rod away from the second mounting plate, and fixing holes are provided in the four corners of the first mounting plate and the second mounting plate.

[0010] Preferably, the outer cylinder is provided with hydraulic oil inside, and a plurality of return holes penetrating through the bottom of the piston are provided on the surface of the piston.

[0011] Preferably, an end of the piston rod penetrates through the oil seal and extends to the outside of the oil seal.

[0012] Preferably, a threaded groove is provided on the top end of the piston rod and the inner wall of the bottom of the sleeve, the sleeve is threadedly connected with the piston rod through the threaded groove, and the sleeve is sleeved on the outside of the outer cylinder.

[0013] Preferably, the damping spring is sleeved on the outside of the sleeve and the outer cylinder, one end of the damping spring is arranged at the bottom of the second mounting plate, and the other end of the damping spring is arranged at the top of the first mounting plate.

[0014] Preferably, the buffer mechanism comprises a lead screw, a connecting plate is threadedly connected to the surface of the lead screw, and an upper damping shaft and a lower damping shaft are fixedly connected to the upper and lower ends of the lead screw, respectively.

[0015] Preferably, inner grooves are provided on the inner walls of the left and right sides of the outer cylinder, two lead screws and two upper and lower damping shafts are provided, the two lead screws and the upper and lower damping shafts are arranged in the inner grooves provided on the inner walls of the left and right sides of the outer cylinder, and two connecting plates are fixedly connected to the left and right surfaces of the piston rod, respectively.

[0016] Due to the threaded connection of the lead screw and the connecting plate, the lead screw will rotate, and during this rotation, due to the friction, viscosity or other resistance mechanisms inside the material, a damping force will be generated, which will unload part of the pressure, thereby reducing the continuous depression of the vehicle body. The upper and lower damping shafts generate friction with the inner wall of the outer cylinder when the lead screw moves, thereby consuming vibration energy.

[0017] A preparation method of a combined shock absorber for automobile, which is convenient to install, comprises an installation step,

[0018] S1: By placing the shock-absorbing spring on the outside of the outer cylinder, and then placing the sleeve on the outside of the outer cylinder, and by having a matching threaded groove on the inner wall of the bottom of the sleeve and the piston rod top, the sleeve is rotated to install the sleeve on the top of the piston rod, and then the bottom of the second mounting plate and the top of the first mounting plate are connected to both ends of the shock-absorbing spring.

[0019] S2: The shock absorber body is connected to the vehicle by fixing holes at the four corners of the first and second mounting plates, or the upper connecting rod is aligned with the top of the second mounting plate and has a second threaded hole in the opposite direction to the first threaded hole at the bottom of the first mounting plate. The upper connecting rod is rotated to connect with the second mounting plate, and then the lower connecting rod is aligned with the bottom of the first mounting plate and has a first threaded hole. The lower connecting rod is rotated to connect with the first mounting plate, and the upper connecting ring at one end of the upper connecting rod and the lower connecting ring at one end of the lower connecting rod are connected to the vehicle.

[0020] S3: When the car is driving on an uneven road surface, the up and down movement of the wheels causes the piston rod and piston to move up and down inside the outer cylinder. During this process, the hydraulic oil at the bottom flows through the bottom valve and the small hole on the piston, generating damping force, thereby reducing the vibration of the car body. When the main mechanism cannot completely absorb the vibration, the shock absorber spring will play an additional buffering role, further reducing the vibration and protecting the main mechanism from damage.

[0021] S4: When the vehicle vibrates during operation, the piston rod moves inside the outer cylinder, and the connecting plate connected to the outside of the piston rod moves on the lead screw. Due to the threaded connection between the lead screw and the connecting plate, the lead screw will rotate. During this rotation, due to the friction, viscosity or other resistance mechanisms inside the material, a damping force will be generated, which will relieve some of the pressure and reduce the continued downward pressure on the vehicle body. The upper damping shaft and the lower damping shaft will rub against the inner wall of the outer cylinder when the lead screw moves, which will consume vibration energy and further enhance the shock absorption effect.

[0022] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0023] First, in this invention, the shock absorber body is connected to the vehicle by fixing holes at the four corners of both the first and second mounting plates, or by aligning the upper connecting rod with the top of the second mounting plate and having a second threaded hole in the opposite direction to the first threaded hole at the bottom of the first mounting plate, rotating the upper connecting rod to connect with the second mounting plate, and then aligning the lower connecting rod with the bottom of the first mounting plate and having a first threaded hole, rotating the lower connecting rod to connect with the first mounting plate. The upper connecting ring at one end of the upper connecting rod and the lower connecting ring at one end of the lower connecting rod are connected to the vehicle. When the car is driving on an uneven road surface, the up-and-down movement of the wheels drives the piston rod and piston to move up and down inside the outer cylinder. During this process, the hydraulic oil at the bottom flows through the bottom valve and the small hole on the piston, generating damping force, thereby reducing the vibration of the vehicle body, achieving the effect of simple installation and good shock absorption.

[0024] Secondly, in this invention, by sleeved a shock-absorbing spring on the outside of the outer cylinder, and then sleeved a sleeve on the outside of the outer cylinder, and by having a matching threaded groove on the top of the piston rod and the inner wall of the bottom of the sleeve, the sleeve is rotated to install the sleeve on the top of the piston rod, and then the bottom of the second mounting plate and the top of the first mounting plate are connected to the two ends of the shock-absorbing spring. When the main body mechanism cannot completely absorb the vibration, the shock-absorbing spring will play an additional buffering role, further reducing the vibration and protecting the main body mechanism from damage.

[0025] Third, in this invention, when vibration occurs during vehicle operation, the piston rod moves inside the outer cylinder, and the connecting plate connected to the outside of the piston rod moves on the lead screw. Due to the threaded connection between the lead screw and the connecting plate, the lead screw will rotate. During this rotation, due to friction, adhesion, or other resistance mechanisms within the material, damping force is generated, which relieves some of the pressure, thereby reducing the continued downward pressure on the vehicle body. The upper and lower damping shafts rub against the inner wall of the outer cylinder when the lead screw moves, consuming vibration energy and further enhancing the shock absorption effect and improving ride comfort. Attached Figure Description

[0026] Figure 1 This is a perspective view of the overall structure of the present invention;

[0027] Figure 2 This is a three-dimensional view of the auxiliary mechanism structure of the present invention;

[0028] Figure 3 This is a partial three-dimensional view of the structure of the present invention;

[0029] Figure 4 This is a perspective view of the three-dimensional planing mechanism of the present invention;

[0030] Figure 5 For the present invention Figure 4 A magnified 3D view of point A;

[0031] Figure 6 This is a plan view of the cross-section of the present invention;

[0032] Figure 7 For the present invention Figure 6 Enlarged plan view at point B.

[0033] The components are as follows: 1. Main structure; 101. First mounting plate; 102. Outer cylinder; 103. Bottom valve; 104. Piston; 105. Piston rod; 106. Oil seal; 107. Lower connecting rod; 108. Lower connecting ring; 2. Auxiliary mechanism; 201. Second mounting plate; 202. Sleeve; 203. Shock-absorbing spring; 204. Upper connecting rod; 205. Upper connecting ring; 3. Buffer mechanism; 301. Lead screw; 302. Connecting plate; 303. Upper damping shaft; 304. Lower damping shaft. Detailed Implementation

[0034] The technical solutions of specific embodiments of the present invention will now be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described specific embodiments are only a part of the present invention, and not all of it. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Specific Implementation Method 1

[0036] The following is a detailed implementation of a conveniently installed modular automotive shock absorber and its manufacturing method.

[0037] Please see Figures 1-7 A modular shock absorber for automobiles that is easy to install and its manufacturing method include a main body 1, an auxiliary mechanism 2 on the top of the main body 1, and a buffer mechanism 3 inside the main body 1.

[0038] The main body 1 includes a first mounting plate 101, an outer cylinder 102 fixedly connected to the top of the first mounting plate 101, a bottom valve 103 fixedly connected inside the outer cylinder 102, a piston 104 movably connected inside the outer cylinder 102, a piston rod 105 fixedly connected to the top of the piston 104, and an oil seal 106 fixedly connected to the top of the outer cylinder 102.

[0039] Specifically, the bottom of the first mounting plate 101 is provided with a first threaded hole, and a lower connecting rod 107 is threadedly connected inside the first threaded hole. A lower connecting ring 108 is fixedly connected to the end of the lower connecting rod 107 away from the first mounting plate 101.

[0040] Specifically, the outer cylinder 102 is filled with hydraulic oil, and the piston 104 has multiple return holes on its surface that extend to the bottom of the piston 104.

[0041] Specifically, one end of the piston rod 105 passes through the oil seal 106 and extends to the outside of the oil seal 106.

[0042] Through the above technical solution, the shock absorber body is connected to the vehicle by fixing holes at all four corners of the first mounting plate 101 and the second mounting plate 201, or the upper connecting rod 204 is aligned with the top of the second mounting plate 201 and has a second threaded hole in the opposite direction to the first threaded hole at the bottom of the first mounting plate 101. The upper connecting rod 204 is rotated to connect with the second mounting plate 201, and then the lower connecting rod 107 is aligned with the bottom of the first mounting plate 101 and has a first threaded hole. The lower connecting rod 107 is rotated to connect with the first mounting plate 101. The upper connecting ring 205 at one end of the upper connecting rod 204 and the lower connecting ring 108 at one end of the lower connecting rod 107 are connected to the vehicle. When the car is driving on an uneven road surface, the up and down movement of the wheels drives the piston rod 105 and the piston 104 to move up and down inside the outer cylinder 102. During this process, the hydraulic oil at the bottom flows through the bottom valve 103 and the small hole on the piston 104, generating damping force, thereby reducing the vibration of the car body. Specific Implementation Method Two

[0044] The following is a detailed implementation of an auxiliary mechanism 2 for a conveniently installed combined automotive shock absorber and its manufacturing method.

[0045] An auxiliary mechanism 2 for a conveniently installed combined automotive shock absorber and its manufacturing method includes a second mounting plate 201, a sleeve 202 fixedly connected to the bottom of the second mounting plate 201, and a shock-absorbing spring 203 provided at the bottom of the second mounting plate 201.

[0046] Specifically, the top of the second mounting plate 201 has a second threaded hole in the opposite direction to the first threaded hole at the bottom of the first mounting plate 101. An upper connecting rod 204 is threaded inside the second threaded hole. An upper connecting ring 205 is fixedly connected to the end of the upper connecting rod 204 away from the second mounting plate 201. Fixing holes are provided at the four corners of both the first mounting plate 101 and the second mounting plate 201.

[0047] Specifically, the top of the piston rod 105 and the bottom inner wall of the sleeve 202 are provided with matching threaded grooves. The sleeve 202 is threadedly connected to the piston rod 105 through the threaded grooves and is sleeved on the outside of the outer cylinder 102.

[0048] Specifically, the shock-absorbing spring 203 is sleeved on the outside of the sleeve 202 and the outer cylinder 102. One end of the shock-absorbing spring 203 is located at the bottom of the second mounting plate 201, and the other end of the shock-absorbing spring 203 is located at the top of the first mounting plate 101.

[0049] Through the above technical solution, by sleeved the shock-absorbing spring 203 on the outside of the outer cylinder 102, and then sleeved the sleeve 202 on the outside of the outer cylinder 102, and by having a matching threaded groove on the top of the piston rod 105 and the bottom inner wall of the sleeve 202, the sleeve 202 is rotated to install the sleeve 202 on the top of the piston rod 105, and then the bottom of the second mounting plate 201 and the top of the first mounting plate 101 are connected to both ends of the shock-absorbing spring 203. When the main body mechanism 1 cannot completely absorb the vibration, the shock-absorbing spring 203 will play an additional buffering role, further reducing the vibration and protecting the main body mechanism 1 from damage.

[0050] Example 3

[0051] The following is a detailed implementation of the buffer mechanism 3 of a conveniently installed combined automotive shock absorber and its manufacturing method.

[0052] A conveniently installed combined automotive shock absorber and its manufacturing method includes a buffer mechanism 3 comprising a lead screw 301, a connecting plate 302 threadedly connected to the surface of the lead screw 301, and an upper damping shaft 303 and a lower damping shaft 304 fixedly connected to the upper and lower ends of the lead screw 301, respectively.

[0053] Specifically, inner grooves are provided on the inner walls of the left and right sides of the outer cylinder 102. Two lead screws 301 are provided with the upper damping shaft 303 and the lower damping shaft 304. Both lead screws 301 and the upper damping shaft 303 and the lower damping shaft 304 are provided in the inner grooves provided on the inner walls of the left and right sides of the outer cylinder 102. Two connecting plates 302 are provided. The two connecting plates 302 are fixedly connected to the left and right sides of the piston rod 105 respectively.

[0054] With the above technical solution, when vibration occurs during vehicle operation, the piston rod 105 moves inside the outer cylinder 102, and the connecting plate 302 connected to the outside of the piston rod 105 moves on the lead screw 301. Due to the threaded connection between the lead screw 301 and the connecting plate 302, the lead screw 301 will rotate. During this rotation, due to the friction, adhesion or other resistance mechanisms inside the material, damping force will be generated, which will relieve part of the pressure and reduce the continued downward pressure on the vehicle body. The upper damping shaft 303 and the lower damping shaft 304 will rub against the inner wall of the outer cylinder 102 when the lead screw 301 moves, which will consume vibration energy, further enhance the shock absorption effect, and improve ride comfort.

[0055] Example 4

[0056] The following is a detailed implementation method for manufacturing a conveniently installed modular automotive shock absorber, including installation steps.

[0057] S1: By placing the shock-absorbing spring on the outside of the outer cylinder, and then placing the sleeve on the outside of the outer cylinder, and by having a matching threaded groove on the inner wall of the bottom of the sleeve and the piston rod top, the sleeve is rotated to install the sleeve on the top of the piston rod, and then the bottom of the second mounting plate and the top of the first mounting plate are connected to both ends of the shock-absorbing spring.

[0058] S2: The shock absorber body is connected to the vehicle by fixing holes at the four corners of the first and second mounting plates, or the upper connecting rod is aligned with the top of the second mounting plate and has a second threaded hole in the opposite direction to the first threaded hole at the bottom of the first mounting plate. The upper connecting rod is rotated to connect with the second mounting plate, and then the lower connecting rod is aligned with the bottom of the first mounting plate and has a first threaded hole. The lower connecting rod is rotated to connect with the first mounting plate, and the upper connecting ring at one end of the upper connecting rod and the lower connecting ring at one end of the lower connecting rod are connected to the vehicle.

[0059] S3: When the car is driving on an uneven road surface, the up and down movement of the wheels causes the piston rod and piston to move up and down inside the outer cylinder. During this process, the hydraulic oil at the bottom flows through the bottom valve and the small hole on the piston, generating damping force, thereby reducing the vibration of the car body. When the main mechanism cannot completely absorb the vibration, the shock absorber spring will play an additional buffering role, further reducing the vibration and protecting the main mechanism from damage.

[0060] S4: When the vehicle vibrates during operation, the piston rod moves inside the outer cylinder, and the connecting plate connected to the outside of the piston rod moves on the lead screw. Due to the threaded connection between the lead screw and the connecting plate, the lead screw will rotate. During this rotation, due to the friction, viscosity or other resistance mechanisms inside the material, a damping force will be generated, which will relieve some of the pressure and reduce the continued downward pressure on the vehicle body. The upper damping shaft and the lower damping shaft will rub against the inner wall of the outer cylinder when the lead screw moves, which will consume vibration energy and further enhance the shock absorption effect.

[0061] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0062] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A combined shock absorber for vehicles which is easy to install and a method of manufacturing the same, comprising a main body mechanism (1), characterized in that: The main body mechanism (1) top is provided with auxiliary mechanism (2), the main body mechanism (1) inside is provided with buffer mechanism (3); ​ The main body mechanism (1) includes a first mounting plate (101), a top of the first mounting plate (101) is fixedly connected with an outer cylinder (102), an inner part of the outer cylinder (102) is fixedly connected with a bottom valve (103), an inner part of the outer cylinder (102) is movably connected with a piston (104), a top of the piston (104) is fixedly connected with a piston rod (105), a top of the outer cylinder (102) is fixedly connected with an oil seal (106); The auxiliary mechanism (2) includes a second mounting plate (201), a bottom of the second mounting plate (201) is fixedly connected with a sleeve (202), and a shock absorbing spring (203) is arranged on the bottom of the second mounting plate (201).

2. A combined shock absorber for vehicles, which is easy to assemble, according to claim 1, wherein: A first threaded hole is formed in the bottom of the first mounting plate (101), a lower connecting rod (107) is threadedly connected in the first threaded hole, and a lower connecting ring (108) is fixedly connected to an end of the lower connecting rod (107) away from the first mounting plate (101).

3. A combined shock absorber for vehicles, which is easy to assemble, according to claim 1, wherein: The outer cylinder (102) is provided with hydraulic oil, and a plurality of return holes penetrating through the bottom of the piston (104) are formed on the surface of the piston (104).

4. A combined shock absorber for vehicles, which is easy to assemble, according to claim 1, wherein: One end of the piston rod (105) penetrates the oil seal (106) and extends to the outside of the oil seal (106).

5. A combined shock absorber for vehicles, which is easy to assemble, according to claim 1, wherein: A second threaded hole is formed in the top of the second mounting plate (201) in the opposite direction of the first threaded hole in the bottom of the first mounting plate (101), an upper connecting rod (204) is threadedly connected in the second threaded hole, an upper connecting ring (205) is fixedly connected to an end of the upper connecting rod (204) away from the second mounting plate (201), and a fixing hole is formed in each corner of the first mounting plate (101) and the second mounting plate (201).

6. A combined shock absorber for vehicles, which is easy to assemble, according to claim 1, wherein: A threaded groove is formed in the bottom inner wall of the sleeve (202) and the top end of the piston rod (105), the sleeve (202) is threadedly connected with the piston rod (105) through the threaded groove, and the sleeve (202) is sleeved outside the outer cylinder (102).

7. A combined shock absorber for vehicle according to claim 1, wherein: The shock absorbing spring (203) is sleeved outside the sleeve (202) and the outer cylinder (102), one end of the shock absorbing spring (203) is arranged on the bottom of the second mounting plate (201), and the other end of the shock absorbing spring (203) is arranged on the top of the first mounting plate (101).

8. A combined shock absorber for vehicle according to claim 1, wherein: The buffer mechanism (3) includes a lead screw (301), a connecting plate (302) is threadedly connected to the surface of the lead screw (301), and an upper damping shaft (303) and a lower damping shaft (304) are fixedly connected to the upper and lower ends of the lead screw (301), respectively.

9. A ready-to-mount combined shock absorber for vehicles and a method for manufacturing the same according to claim 8, characterized in that: The inner wall of the outer cylinder (102) is provided with an inner groove, the lead screw (301) is provided with two upper and lower damping shafts (303) and (304), the two lead screws (301) are arranged in the inner groove of the left and right inner walls of the outer cylinder (102), and the connecting plates (302) are arranged on the left and right sides of the piston rod (105).

10. The method of claim 1-9, wherein the method is characterized by: The method comprises a mounting step, S1: by sleeving the damping spring on the outer side of the outer cylinder, then sleeving the sleeve on the outer side of the outer cylinder, by the threaded groove matched with the bottom inner wall of the sleeve at the top end of the piston rod, rotating the sleeve to install the sleeve on the top of the piston rod, then connecting the first mounting plate top and the second mounting plate bottom with the two ends of the damping spring. S2: the shock absorber body is connected with the vehicle by the fixing holes arranged at the four corners of the first mounting plate and the second mounting plate, or the upper connecting rod is aligned with the second threaded hole opposite to the first threaded hole arranged at the bottom of the first mounting plate, the upper connecting rod is connected with the second mounting plate by rotating, then the lower connecting rod is aligned with the first threaded hole arranged at the bottom of the first mounting plate, the lower connecting rod is connected with the first mounting plate by rotating, and the vehicle is connected through the upper connecting ring at one end of the upper connecting rod and the lower connecting ring at one end of the lower connecting rod. S3: when the automobile runs on uneven road surface, the up-down movement of the wheel drives the piston rod and the piston to move up and down in the outer cylinder, in this process, the hydraulic oil at the bottom flows through the bottom valve and the small hole on the piston, and the damping force is generated, so as to slow down the vibration of the vehicle body, when the main mechanism cannot completely absorb the vibration, the damping spring will play an additional buffering role, further reducing the vibration and protecting the main mechanism from damage. S4: when the vehicle generates vibration during driving, the piston rod moves in the outer cylinder, and the connecting plate connected outside the piston rod moves on the lead screw, since the lead screw is threadedly connected with the connecting plate, the lead screw will rotate, and in this rotation process, due to the internal friction, viscosity or other resistance mechanism of the material, the damping force will be generated, part of the pressure will be unloaded, so as to reduce the continuous depression of the vehicle body, the upper and lower damping shafts generate friction with the inner wall of the outer cylinder when the lead screw moves, consume vibration energy, and further enhance the damping effect.

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