Shock absorber, shock absorption method and vehicle

Abstract

The invention discloses a shock absorber, a shock absorption method and a vehicle, and relates to the field of shock absorption devices. The shock absorber comprises an oil storage barrel. One end of the piston rod penetrates into the oil storage barrel from the open end of the oil storage barrel; the side wall of the piston rod and the opening of the oil storage barrel are sealed; an oil passing hole formed in the axial direction of the piston rod is formed in the piston rod; the main piston valve system is movably arranged in the oil storage barrel and divides the oil storage barrel into a first cavity and a second cavity, and the main piston valve system is fixedly connected with the end, located in the oil storage barrel, of the piston rod; one end of the nitrogen cylinder is connected with the end, away from the oil storage cylinder, of the piston rod through a connecting assembly. When the piston rod moves in the oil storage barrel in a reciprocating mode in the axial direction of the piston rod, part of oil in the oil storage barrel can be transferred between the first cavity and the second cavity through the main piston valve system, and the other part of oil in the oil storage barrel can be transferred between the first cavity and the nitrogen barrel through the oil hole. According to the shock absorber, the shock absorption method and the vehicle, the heat dissipation efficiency can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vibration damping devices, and in particular to a shock absorber, a vibration damping method and a vehicle. Background Art

[0002] Shock absorbers are generally installed on cars to accelerate the attenuation of frame and body vibrations to improve the car's driving smoothness. At the same time, they are used to suppress the impact of the road when passing through uneven roads to improve the car's driving performance.

[0003] Nitrogen shock absorbers are widely used due to their precise damping control and good stability. However, existing nitrogen shock absorbers directly connect the nitrogen cylinder to the connecting seat, or directly connect the nitrogen cylinder to the oil reservoir, or directly connect the nitrogen cylinder to the connecting seat / oil reservoir through a hydraulic oil pipe. The nitrogen cylinder and the piston rod do not have a direct structural connection device. Instead, force is transmitted more often through oil pressure. The oil in the oil reservoir directly enters the nitrogen cylinder under pressure to transmit force. The oil temperature of the shock absorber has a significant impact on the damping performance and sealing components of the product. In existing nitrogen shock absorbers, the oil is directly transferred between the oil reservoir and the nitrogen cylinder, and the heat dissipation area of ​​the oil is small, resulting in low heat dissipation efficiency.

[0004] Therefore, it is urgent to design a technical solution that can improve heat dissipation efficiency. Summary of the Invention

[0005] The object of the present invention is to provide a shock absorber, a vibration reduction method and a vehicle to solve the problems existing in the above-mentioned prior art and to improve the heat dissipation efficiency.

[0006] To achieve the above object, the present invention provides the following solutions: The present invention provides a vibration damper, comprising: An oil storage cylinder, wherein the oil storage cylinder is used to contain oil, and one end of the oil storage cylinder is open; A piston rod, one end of which penetrates into the oil storage cylinder from the open end of the oil storage cylinder, and a seal is provided between the side wall of the piston rod and the opening of the oil storage cylinder; an oil hole arranged along the axial direction of the piston rod is provided in the piston rod; a main piston valve system movably disposed in the oil reservoir, dividing the oil reservoir into a first cavity away from the opening and a second cavity near the opening, and the main piston valve system is fixedly connected to one end of the piston rod located in the oil reservoir; A nitrogen cylinder, one end of which is connected to the end of the piston rod away from the oil reservoir through a connecting assembly, and the nitrogen cylinder is communicated with the oil hole; when the piston rod reciprocates along the piston rod axis in the oil reservoir, part of the oil in the oil reservoir can be transferred between the first cavity and the second cavity through the main piston valve system, and another part of the oil in the oil reservoir can be transferred between the first cavity and the nitrogen cylinder through the oil hole.

[0007] Preferably, a sealing assembly is further included, which is fixedly sealed at the opening position of the oil reservoir, the piston rod is passed through the sealing assembly, and the side wall of the piston rod is in contact and sealed with the sealing assembly; the cavity between the sealing assembly and the main piston valve system forms the second cavity, and the cavity between the main piston valve system and the end of the oil reservoir away from the opening forms the first cavity.

[0008] Preferably, a floating piston is movably provided in the nitrogen cylinder, the outer side of the floating piston is in contact and sealed with the inner wall of the nitrogen cylinder, and the floating piston divides the nitrogen cylinder into a nitrogen chamber and an oil chamber, nitrogen can be introduced into the nitrogen chamber, and the oil chamber is connected to the oil hole of the piston rod.

[0009] Preferably, the connecting assembly includes a first connecting seat, which is fixedly connected to the end of the piston rod away from the oil storage cylinder and the end of the nitrogen cylinder close to the oil chamber respectively. A connecting assembly is provided in the connecting assembly, and the connecting assembly can connect the oil hole of the piston rod with the oil chamber.

[0010] Preferably, the connecting component includes a compression regulating valve and a connecting flow channel opened on the first connecting seat, one end of the connecting flow channel is connected to the oil chamber, and the other end is connected to the oil hole, the compression regulating valve is arranged in the connecting flow channel, and a through hole is opened in the compression regulating valve, the through hole can conduct the connecting flow channel, and the compression regulating valve can adjust the aperture of the through hole.

[0011] Preferably, a rebound regulating valve is provided on the first connecting seat, and a rebound regulating hole and an oil inlet hole are opened on the main piston valve system. The rebound regulating hole can flow the oil in the oil hole into the first cavity in one direction, and the rebound regulating valve can adjust the aperture of the rebound regulating hole; the oil inlet hole can flow the oil in the first cavity into the oil hole in one direction.

[0012] Preferably, the rebound adjustment assembly includes an adjusting wheel, a spherical ejector pin, a ejector rod and a rebound conical core; the adjusting wheel is threadedly connected to the internal threaded hole of the first connecting seat, and one end of the adjusting wheel located in the internal threaded hole is provided with a tapered portion, the diameter of the tapered portion gradually decreases from the outside to the inside, and the ejector rod is slidably connected to the oil hole of the piston rod, and a spherical ejector pin is fixed to one end of the ejector rod, and the end of the spherical ejector pin away from the ejector rod abuts against the side wall of the tapered portion, and the other end of the ejector rod is connected to a rebound conical core, the side wall of the rebound conical core contacts the orifice of the rebound adjustment hole close to the oil hole, and the ejector rod can drive the rebound conical core to move back and forth along the axial direction of the piston rod, thereby adjusting the size of the connecting area between the orifice of the rebound adjustment hole and the oil hole.

[0013] Preferably, a second connecting seat is fixedly provided at one end of the oil storage cylinder away from the opening, and the second connecting seat can be connected to the product to be vibration-damped.

[0014] The present invention also provides a vibration reduction method, using the vibration reducer as described above; the vibration reduction method comprises the following steps: When the shock absorber is in compression mode, the piston rod drives the main piston valve system to move axially toward one end of the oil reservoir. The oil pressure in the first chamber increases, and part of the oil flows through the main piston valve system into the second chamber. The other part of the oil flows through the oil hole of the piston rod and enters the nitrogen cylinder through the compression regulating valve, generating compression damping force. The floating piston compresses the nitrogen to compensate for the volume change of the piston rod in the oil reservoir under compression mode. When the shock absorber is in the tension condition, the piston rod drives the main piston valve system to move axially away from the end of the oil reservoir. Under the pressure of the nitrogen inside the nitrogen cylinder, the oil in the oil chamber of the nitrogen cylinder passes through the one-way return port on the compression regulating valve and enters the oil hole, and then passes through the rebound regulating hole on the main piston valve system and enters the first chamber of the oil reservoir; the oil in the second chamber opens the one-way recovery valve of the main piston valve system and enters the first chamber.

[0015] The present invention also provides a vehicle, comprising a vehicle body, wherein the vehicle body is provided with the shock absorber as described above.

[0016] Compared with the prior art, the present invention has achieved the following technical effects: The present invention has an oil hole in the piston rod, which connects the nitrogen cylinder with the oil hole at one end of the piston rod away from the oil storage cylinder. Therefore, when the shock absorber is compressed and reduced in vibration, a part of the oil is transferred between the first cavity and the second cavity of the oil storage cylinder through the main piston valve to provide damping force, and the other part of the oil enters the nitrogen cylinder through the oil hole of the piston rod to compress the nitrogen in the nitrogen cylinder. The oil is divided into two parts and circulates to different positions to provide damping force, thereby increasing the flow area of ​​the oil, thereby increasing the heat dissipation area compared with the traditional shock absorber, and further improving the heat dissipation efficiency of the oil. Since the temperature of the oil under pressure will increase during the compression and vibration reduction process of the shock absorber, excessively high oil temperature of the shock absorber will damage the damping performance and sealing performance of the equipment. Therefore, the present invention avoids the problem of excessive oil temperature by improving the heat dissipation efficiency of the oil, thereby improving the damping performance and sealing performance of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 A schematic cross-sectional view of a shock absorber in one or some embodiments of the present invention; Figure 2 A schematic structural diagram of a first connecting seat of a shock absorber in one or some embodiments of the present invention; Figure 3 Schematic diagram of the structure of the main piston valve system of the shock absorber in one or some embodiments of the present invention.

[0019] In the figure: 1-first connecting seat, 2-rebound regulating valve, 3-piston rod, 4-sealing assembly, 5-oil reservoir, 6-main piston valve system, 7-second connecting seat, 8-compression regulating valve, 9-floating piston, 10-nitrogen cylinder, 11-rebound regulating hole, 12-top rod, 13-oil hole. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0021] The object of the present invention is to provide a shock absorber, a vibration reduction method and a vehicle to solve the problems existing in the above-mentioned prior art and to improve the heat dissipation efficiency.

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] In the prior art, the nitrogen cylinder is directly connected to the oil reservoir, and the oil in the oil reservoir is then pressed into the nitrogen cylinder to achieve a vibration reduction effect. This arrangement of the nitrogen cylinder occupies a large space between the nitrogen cylinder and the oil reservoir, which easily causes the shock absorber to collide. In addition, the structure of the oil reservoir being directly connected to the nitrogen cylinder results in a small cross-sectional area of ​​the oil flow path in the oil reservoir, which results in a low heat dissipation efficiency of the oil. In order to solve this problem, the present invention provides a shock absorber, referring to Figure 1 、 Figure 2 and Figure 3As shown, it includes an oil reservoir 5, which is used to contain oil, and one end of the oil reservoir 5 is open; one end of the piston rod 3 penetrates into the oil reservoir 5 from the open end of the oil reservoir 5, and the side wall of the piston rod 3 contacts and seals with the opening of the oil reservoir 5; an oil hole 13 arranged along the axial direction of the piston rod 3 is opened in the piston rod 3; the main piston valve system 6 is movably arranged in the oil reservoir 5, dividing the oil reservoir 5 into a first cavity away from the opening and a second cavity close to the opening, and the main piston valve system 6 and the piston One end of the rod 3 is located in the oil reservoir 5 and is fixedly connected; one end of the nitrogen cylinder 10 is connected to the end of the piston rod 3 away from the oil reservoir 5 through a connecting assembly, and the nitrogen cylinder 10 is communicated with the oil hole 13; when the piston rod 3 moves back and forth along the axial direction of the piston rod 3 in the oil reservoir 5, part of the oil in the oil reservoir 5 can be transferred between the first cavity and the second cavity through the main piston valve system 6, and the other part of the oil in the oil reservoir 5 can be transferred between the first cavity and the nitrogen cylinder 10 through the oil hole 13. The present invention has an oil hole 13 in the piston rod 3, connecting the nitrogen cylinder 10 with the oil hole 13 at the end of the piston rod 3 away from the oil reservoir 5. When the shock absorber is compressed, part of the oil is transferred between the first cavity and the second cavity of the oil reservoir 5 through the main piston valve system 6 to provide damping force, and the other part of the oil enters the nitrogen cylinder 10 through the oil hole 13 of the piston rod 3 to compress the nitrogen in the nitrogen cylinder 10. The oil is divided into two parts and flows to different positions to provide damping force, thereby increasing the flow area of ​​the oil. Compared with traditional shock absorbers, the heat dissipation area is increased, thereby improving the heat dissipation efficiency of the oil. The hollow design of the piston rod 3 satisfies the oil flow function under the tension / compression conditions of the shock absorber and also plays a role in lightweighting. Since the oil temperature increases during the compression damping process of the shock absorber, excessively high oil temperature in the shock absorber will damage the damping performance and sealing performance of the device. Therefore, the present invention avoids the problem of excessive oil temperature by improving the heat dissipation efficiency of the oil, thereby improving the damping performance and sealing performance of the device. The shock absorber in the prior art connects the nitrogen cylinder 10 to the oil reservoir 5, and the piston rod 3 is located at the bottom of the oil reservoir 5, which is easily bumped. However, the present invention connects the nitrogen cylinder 10 to the piston rod 3 at an end away from the oil reservoir 5, and the piston rod 3 is placed at the top of the oil reservoir 5. The splash height of sand and gravel is limited, which can prevent sand and gravel from bumping and invading the piston rod 3, thereby enhancing the overall stability and durability of the system.

[0024] In order to achieve sealing inside the oil reservoir 5 and ensure that the piston rod 3 can move back and forth axially, a sealing component 4 is designed in one embodiment. The sealing component 4 is fixedly sealed at the opening position of the oil reservoir 5, and the piston rod 3 is passed through the sealing component 4, and the side wall of the piston rod 3 is in contact and sealed with the sealing component 4, so that the piston rod 3 can move axially along the inside of the sealing component 4, and the oil in the oil reservoir 5 will not leak during the movement; the structure of the sealing component 4 is not limited, and a sealing piston with a central opening can be used, or a sealing gasket or a sealing valve can be used, as long as the opening of the oil reservoir 5 can be sealed and the piston rod 3 can pass through it in a sealed manner; the sealing component 4 is connected to the oil reservoir 5, and the piston rod 3 can perform axial stretching and compression actions on the sealing component 4, and the sealing component 4 and the oil reservoir 5 together play a certain lateral supporting role for the piston rod 3. The cavity between the sealing assembly 4 and the main piston valve system 6 forms a second cavity, and the cavity at the main piston valve system 6 and the end of the oil storage cylinder 5 away from the opening forms a first cavity. The first cavity and the second cavity are separated by the main piston valve system 6. Two one-way flow channels are provided on the main piston valve system 6, and valve plates in different directions are provided on the flow channels. Under a certain pressure, the valve plates can open the corresponding flow channels; one of the flow channels cooperates with its valve plate to enable the oil in the first cavity to flow unidirectionally to the second cavity and cannot flow in the opposite direction; the other flow channel cooperates with its valve plate to enable the oil in the second cavity to flow unidirectionally to the first cavity and cannot flow in the opposite direction. By adjusting the position of the two valve plates, the maximum opening cross-sectional area of ​​the flow channel corresponding to the valve plate can be controlled, and then the flow rate of the oil between the first cavity and the second cavity can be controlled, thereby controlling the damping force of the shock absorber.

[0025] In one embodiment, a floating piston 9 is movably disposed within a nitrogen cylinder 10. A sealing ring is provided on the outer wall of the floating piston 9 to enhance the seal between the floating piston 9 and the nitrogen cylinder 10. The floating piston 9 divides the nitrogen cylinder 10 into a nitrogen chamber and an oil chamber. The nitrogen chamber is filled with nitrogen, and the oil chamber is connected to an oil hole 13 in the piston rod 3. A valve cap is provided at the end of the nitrogen cylinder 10 away from the oil hole 13, thereby sealing the nitrogen chamber. The valve cap can be secured with a retaining ring. Specifically, a retaining groove is provided at the valve cap and corresponding positions on the nitrogen cylinder 10. The retaining ring is installed in the two retaining grooves to secure the valve cap. Opening the valve cap exposes the valve at the bottom of the nitrogen cylinder 10, allowing nitrogen to be filled into the nitrogen cylinder 10. The valve cap structure is similar to that of a tire inflation port, enabling one-way gas injection into the nitrogen cylinder 10 but preventing reverse gas flow. This is a mature design.

[0026] In one embodiment, the connecting assembly includes a first connecting seat 1, which is fixedly connected to the end of the piston rod 3 away from the oil storage cylinder 5 and the end of the nitrogen cylinder 10 close to the oil chamber. A connecting assembly is provided in the connecting assembly, which can connect the oil hole 13 of the piston rod 3 with the oil chamber. The connecting assembly includes a compression regulating valve 8 and a connecting flow channel opened on the first connecting seat 1, one end of the connecting flow channel is connected to the oil chamber, and the other end is connected to the oil hole 13. The compression regulating valve 8 is provided in the connecting flow channel, and a through hole is opened in the compression regulating valve 8. The through hole can conduct the connecting flow channel, and the compression regulating valve 8 can adjust the aperture size of the through hole. The compression regulating valve 8 belongs to the structure in the prior art. Its structure and method of adjusting the aperture size and thus adjusting the flow rate are mature technologies, so they are not described in detail.

[0027] In one embodiment, a rebound regulating valve 2 is provided on the first connecting seat 1, and a rebound regulating hole 11 and an oil inlet hole are provided on the main piston valve system 6. The rebound regulating hole 11 allows oil in the oil hole 13 to flow unidirectionally into the first cavity. The rebound regulating valve 2 can adjust the diameter of the rebound regulating hole 11; the oil inlet hole allows oil in the first cavity to flow unidirectionally into the oil hole 13. In one embodiment, a hydraulic buffer piston device for compression conditions can be added to the main piston valve system 6 according to product positioning requirements to further enhance the damping force of the piston rod 3 during compression or extension. In this embodiment, the rebound adjustment assembly includes an adjusting wheel, a spherical ejector pin, a ejector rod 12 and a rebound conical core; the adjusting wheel is threadedly connected to the internal threaded hole of the first connecting seat 1, and the end of the adjusting wheel located in the internal threaded hole is provided with a tapered portion, the diameter of the tapered portion gradually decreases from the outside to the inside, and the ejector rod 12 is slidably connected to the oil hole 13 of the piston rod 3, and a spherical ejector pin is fixed to one end of the ejector rod 12, and the end of the spherical ejector pin away from the ejector rod 12 abuts against the side wall of the tapered portion, and the other end of the ejector rod 12 is connected to the rebound conical core, and the side wall of the rebound conical core contacts the orifice of the rebound adjustment hole 11 near the oil hole 13. The ejector rod 12 can drive the rebound conical core to move back and forth axially along the piston rod 3, thereby adjusting the size of the connecting area between the orifice of the rebound adjustment hole 11 and the oil hole 13.

[0028] In one embodiment, a second connecting seat 7 is fixedly provided at one end of the oil storage cylinder 5 away from the opening, and the second connecting seat 7 can be connected to the product to be damped.

[0029] The present invention also provides a vibration reduction method, using the above vibration reducer; the vibration reduction method comprises the following steps: When the shock absorber is in compression mode, the piston rod 3 drives the main piston valve system 6 to move axially toward one end of the oil reservoir 5, that is, the piston rod 3 is compressed, the oil pressure in the first chamber increases, and part of the oil flows into the second chamber through the main piston valve system 6; the other part of the oil flows through the one-way flow channel at the bottom of the main piston valve system 6, passes through the oil hole 13 of the piston rod 3, and enters the nitrogen cylinder 10 through the compression regulating valve 8, generating compression damping force. The floating piston 9 compresses the nitrogen to compensate for the volume change of the piston rod in the oil reservoir under compression mode, as shown in Figure 2. Figure 3 As shown, Figure 3 The two arrows in the figure indicate the flow path of the oil in the first chamber when the first chamber is compressed. Adjusting the position of the compression regulating valve 8 here can generate different pressure differentials, and thus different compression damping forces. The compression regulating valve 8 is a mature existing structure and will not be described in detail. The volume intrusion of the piston rod 3 under the compression condition is compensated by the nitrogen compressed by the floating piston 9. When the shock absorber is in the tensioning condition, the piston rod 3 drives the main piston valve system 6 to move axially toward the end away from the oil reservoir 5, that is, the piston rod 3 is stretched. Under the pressure of the nitrogen gas in the nitrogen cylinder 10, the oil in the oil chamber of the nitrogen cylinder 10 passes through the one-way return port on the compression regulating valve 8 and enters the oil hole 13, and then passes through the rebound regulating hole 11 on the main piston valve system 6 to enter the first chamber of the oil reservoir 5. By adjusting the gear position of the rebound regulating valve 2, different pressure differentials can be generated, and thus different restoring damping forces can be generated. Due to the stretching of the piston rod 3, the pressure in the second chamber formed by the main piston valve system 6 and the sealing assembly 4 increases. The oil in the second chamber opens the one-way flow passage for the return flow of the main piston valve system 6, allowing the oil to enter the first chamber formed by the main piston valve system 6 and the oil reservoir 5. Under high-speed tension / compression conditions, the shock absorber oil temperature will increase. The present invention changes the position of the nitrogen cylinder 10, thereby reducing direct collision and wear of the shock absorber piston rod 3 on the one hand and increasing the oil flow area on the other hand, thereby improving the heat dissipation efficiency of the shock absorber.

[0030] The present invention also provides a vehicle, including a vehicle body, on which the shock absorber as described above is provided. By rearranging the position of the nitrogen cylinder 10, the direct collision and wear of the shock absorber are reduced, and the heat dissipation efficiency of the shock absorber is simultaneously improved, thereby ensuring the driving performance of the vehicle and extending the service life of the shock absorber.

[0031] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A vibration absorber, characterized in that: include: An oil storage cylinder, wherein the oil storage cylinder is used to contain oil, and one end of the oil storage cylinder is open; A piston rod, one end of which penetrates into the oil storage cylinder from the open end of the oil storage cylinder, and a seal is provided between the side wall of the piston rod and the opening of the oil storage cylinder; an oil hole arranged along the axial direction of the piston rod is provided in the piston rod; a main piston valve system movably disposed in the oil reservoir, dividing the oil reservoir into a first cavity away from the opening and a second cavity near the opening, and the main piston valve system is fixedly connected to one end of the piston rod located in the oil reservoir; A nitrogen cylinder, one end of which is connected to the end of the piston rod away from the oil reservoir through a connecting assembly, and the nitrogen cylinder is communicated with the oil hole; when the piston rod reciprocates along the piston rod axis in the oil reservoir, part of the oil in the oil reservoir can be transferred between the first cavity and the second cavity through the main piston valve system, and another part of the oil in the oil reservoir can be transferred between the first cavity and the nitrogen cylinder through the oil hole.

2. The shock absorber according to claim 1, characterized in that: It also includes a sealing assembly, which is fixedly sealed at the opening position of the oil storage cylinder, the piston rod is passed through the sealing assembly, and the side wall of the piston rod is in contact and sealed with the sealing assembly; the cavity between the sealing assembly and the main piston valve system forms the second cavity, and the cavity between the main piston valve system and the end of the oil storage cylinder away from the opening forms the first cavity.

3. The shock absorber according to claim 1, characterized in that: A floating piston is movably provided in the nitrogen cylinder. The outer side of the floating piston is in contact and sealed with the inner wall of the nitrogen cylinder. The floating piston divides the nitrogen cylinder into a nitrogen chamber and an oil chamber. Nitrogen can be introduced into the nitrogen chamber, and the oil chamber is connected to the oil hole of the piston rod.

4. The shock absorber according to claim 3, characterized in that: The connecting assembly includes a first connecting seat, which is fixedly connected to the end of the piston rod away from the oil storage cylinder and the end of the nitrogen cylinder close to the oil chamber respectively. A connecting assembly is provided in the connecting assembly, and the connecting assembly can connect the oil hole of the piston rod with the oil chamber.

5. The shock absorber according to claim 4, characterized in that: The connecting component includes a compression regulating valve and a connecting flow channel opened on the first connecting seat, one end of the connecting flow channel is connected to the oil chamber, and the other end is connected to the oil hole. The compression regulating valve is arranged in the connecting flow channel, and a through hole is opened in the compression regulating valve. The through hole can conduct the connecting flow channel, and the compression regulating valve can adjust the aperture of the through hole.

6. The shock absorber according to claim 4, characterized in that: A rebound regulating valve is provided on the first connecting seat, and a rebound regulating hole and an oil inlet hole are opened on the main piston valve system. The rebound regulating hole can flow the oil in the oil hole into the first cavity in one direction, and the rebound regulating valve can adjust the aperture of the rebound regulating hole; the oil inlet hole can flow the oil in the first cavity into the oil hole in one direction.

7. The shock absorber according to claim 6, characterized in that: The rebound adjustment assembly includes an adjusting wheel, a spherical ejector pin, a ejector rod and a rebound conical core; the adjusting wheel is threadedly connected to the internal threaded hole of the first connecting seat, and one end of the adjusting wheel located in the internal threaded hole is provided with a tapered portion, the diameter of the tapered portion gradually decreases from the outside to the inside, and the ejector rod is slidably connected to the oil hole of the piston rod, and a spherical ejector pin is fixed at one end of the ejector rod, and the end of the spherical ejector pin away from the ejector rod abuts against the side wall of the tapered portion, and the other end of the ejector rod is connected to the rebound conical core, the side wall of the rebound conical core contacts the orifice of the rebound adjusting hole close to the oil hole, and the ejector rod can drive the rebound conical core to move back and forth along the axial direction of the piston rod, thereby adjusting the size of the connecting area between the orifice of the rebound adjusting hole and the oil hole.

8. The shock absorber according to claim 1, characterized in that: A second connecting seat is fixedly provided on one end of the oil storage cylinder away from the opening, and the second connecting seat can be connected to the product to be vibration-damped.

9. A vibration reduction method, characterized in that: The vibration damper according to any one of claims 1 to 8 is used; the vibration damping method comprises the following steps: When the shock absorber is in compression mode, the piston rod drives the main piston valve system to move axially toward one end of the oil reservoir. The oil pressure in the first chamber increases, and part of the oil flows through the main piston valve system into the second chamber. The other part of the oil flows through the oil hole of the piston rod and enters the nitrogen cylinder through the compression regulating valve, generating compression damping force. The floating piston compresses the nitrogen to compensate for the volume change of the piston rod in the oil reservoir under compression mode. When the shock absorber is in the tension condition, the piston rod drives the main piston valve system to move axially away from the end of the oil reservoir. Under the pressure of the nitrogen inside the nitrogen cylinder, the oil in the oil chamber of the nitrogen cylinder passes through the one-way return port on the compression regulating valve and enters the oil hole, and then passes through the rebound regulating hole on the main piston valve system and enters the first chamber of the oil reservoir; the oil in the second chamber opens the one-way recovery valve of the main piston valve system and enters the first chamber.

10. A vehicle, characterized in that: The vehicle comprises a vehicle body, on which is provided the shock absorber according to any one of claims 1 to 8.

Images