Multi-stage adjustable automobile shock absorber

Abstract

The invention belongs to the technical field of automobile shock absorbers, and discloses a multi-stage adjustable automobile shock absorber which comprises a hydraulic prop body, a top mounting seat, a spring mounting disc and a main spring, the hydraulic prop body comprises an outer cylinder, an inner cylinder and a piston mechanism, and the top ends of the outer cylinder and the inner cylinder are fixedly connected with a mounting part; and the inner cylinder is fixedly sleeved with the outer cylinder. Heat is quickly sucked into an ethanol-water mixture through the heat exchange copper pipes, the temperature of oil liquid is reduced through evaporation of the ethanol-water mixture after heat absorption, the problem that the oil liquid is too high under the continuous damping effect is avoided, the multiple sets of heat exchange copper pipes are immersed in the oil liquid, heat is effectively absorbed, and the service life of the oil liquid is prolonged. And boil-off gas of the ethanol-water mixture is guided upwards to the mounting storage cover, is located on the outer side of the outer barrel, is condensed again along with gas cooling and then flows back into the heat exchange copper pipe, so that the oil temperature is rapidly reduced under continuous shock absorption damping treatment, and the problems of oil viscosity reduction and other risks caused by overheating are avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of automotive shock absorbers, and specifically relates to a multi-stage adjustable automotive shock absorber. Background Art

[0002] The strut-type automotive shock absorber is a suspension system that integrates a shock absorber and a suspension spring, and is widely used in the front suspension of modern automobiles. When the wheel moves up and down, the spring compresses or stretches, and at the same time, the piston inside the shock absorber moves in the hydraulic oil, generating a damping force to absorb and dissipate energy. Usually, the internal valve is multi-stage adjustable, and it is a shock absorber that can adjust the damping force according to driving conditions or driver needs. By changing the opening degree of the valve inside the shock absorber, the damping characteristics can be changed to adapt to different road conditions or driving styles, thereby improving the comfort, handling, and stability of the vehicle.

[0003] In the multi-stage adjustable automotive shock absorber in the prior art, during use, through the hydraulic oil in the inner and outer cylinders of the shock absorber, the shock damping effect is achieved under the action of the valve and the throttle hole, and the vibration energy is converted into heat of the hydraulic oil and dissipated through the outer cylinder. However, when actually dealing with continuous shock absorption, during continuous shock absorption and damping treatment, the internal hydraulic oil will quickly heat up due to frequent compression and stretching movements. At present, it only relies on the heat dissipation of the outer cylinder, and the heat dissipation is incomplete, which leads to overheating of the hydraulic oil, resulting in a decrease in the viscosity of the hydraulic oil and a decline in performance. Moreover, after the hydraulic oil overheats, the damping force becomes unstable, resulting in problems such as bumps, shakes, or a decline in handling during vehicle driving, and the actual effect of dealing with continuous shock absorption is not good. Summary of the Invention

[0004] The purpose of the present invention is to provide a multi-stage adjustable automotive shock absorber to solve the problems raised in the above background art.

[0005] To achieve the above object, the present invention provides the following technical solution: a multi-stage adjustable automotive shock absorber, comprising a hydraulic strut body, a top mounting seat, a spring mounting disc and a main spring. The hydraulic strut body includes an outer cylinder, an inner cylinder and a piston mechanism. The top ends of the outer cylinder and the inner cylinder are fixedly connected with a mounting portion. The inner cylinder is fixedly sleeved inside the outer cylinder. One end of the piston mechanism is movably sleeved in the inner cylinder, and the other end is fixed in the top mounting seat. A storage cavity is provided between the inner cylinder and the outer cylinder. A heat exchange copper tube is provided inside the storage cavity. The inner end of the heat exchange copper tube is sealed. The other end of the heat exchange copper tube passes through the outer cylinder and extends to the outside. An ethanol-water mixture is stored in the heat exchange copper tube. An installation storage cover is fixedly sleeved outside the outer cylinder. A pushing component and a separating ring are provided inside the installation storage cover. The separating ring is fixed in the installation storage cover and divides an upper chamber and a lower chamber in the installation storage cover. The upper chamber is filled with lubricating oil. The upper end of the heat exchange copper tube is located in the installation storage cover and is internally communicated with the pushing component. A spraying component is provided on the mounting portion. The spraying component is communicated with the upper chamber in the installation storage cover.

[0006] Preferably, the piston mechanism includes a piston rod and a piston head. Hydraulic valve parts are provided in the bottom of the inner cylinder and the piston head. Hydraulic oil is filled inside the inner cylinder and in the storage cavity. Nitrogen is filled in the storage cavity above the hydraulic oil.

[0007] Preferably, the number of the spring mounting discs is two. The two spring mounting discs are respectively fixed in the top mounting seat and the mounting portion. The main spring is located between the two spring mounting discs. A sealing seat is fixedly provided at the top of the mounting portion. The sealing seat is located outside the piston rod. A dust cover is sleeved outside the piston rod.

[0008] Preferably, the pushing component includes a movable ring, a connecting sleeve, a push rod and an auxiliary spring. The movable ring is located in the upper chamber. The connecting sleeve is located in the lower chamber and is fixedly connected to the bottom surface of the separating ring. One end of the push rod is fixed to the bottom surface of the movable ring, and the other end is movably sleeved in the connecting sleeve. One end of the auxiliary spring is fixedly connected in the connecting sleeve, and the other end is fixedly connected to the push rod. The side surface of the connecting sleeve is fixedly connected to the heat exchange copper tube. The heat exchange copper tube is internally communicated with the connecting sleeve.

[0009] Preferably, the upper end of the heat exchange copper tube is located below the lower end of the push rod. The upper end of the heat exchange copper tube is horizontally oriented and aligned with the bottom of the inner cavity of the connecting sleeve.

[0010] Preferably, the ejection assembly includes a curved pipe, ejection holes, and a curved cavity. The curved cavity is formed inside the installation part. The bottom of the installation part is fixedly connected to the top of the installation storage cover. The curved cavity passes through the bottom of the installation part and communicates with the upper chamber of the installation storage cover. The curved pipe is fixedly sleeved on the top of the installation part and communicates with the curved cavity. The upper end of the curved pipe is inclined towards the main spring. The ejection holes are formed on the upper end surface of the curved pipe.

[0011] Preferably, a separation assembly is fixedly arranged inside the storage cavity. The separation assembly is fixedly sleeved on the outer side of the heat exchange copper pipe. One side of the separation assembly is connected to the inner wall of the outer cylinder. There is a first annular gap between the other side of the separation assembly and the inner cylinder.

[0012] Preferably, the separation assembly includes a guiding ring, a filtering ring, filtering holes, a bottom platform, and a round table surface. The filtering ring is fixed on the outer side of the guiding ring. The filtering ring is fixedly connected to the inner wall of the outer cylinder. The filtering holes are formed in the filtering ring. The first annular gap is located between the guiding ring and the inner cylinder. The bottom platform is fixedly connected to the bottom of the guiding ring. The round table surface is arranged on the top of the bottom platform and is located below the filtering ring. There is a second annular gap formed between the outer side edge of the bottom platform and the inner wall of the outer cylinder.

[0013] The beneficial effects of the present invention are as follows:

[0014] (1) By utilizing the heat exchange copper pipe and the ethanol-water mixture stored inside, when the temperature of the oil liquid in the storage cavity between the outer cylinder and the inner cylinder rises, the heat is quickly absorbed into the ethanol-water mixture through the heat exchange copper pipe. By using the evaporation of the ethanol-water mixture after heat absorption, the temperature of the oil liquid is reduced, avoiding the problem of excessive oil liquid temperature under continuous shock absorption and damping. Multiple heat exchange copper pipes are immersed in the oil liquid, effectively absorbing heat. And the evaporation gas of the ethanol-water mixture is led upward to the installation storage cover and is located outside the outer cylinder. After cooling and re-condensing, it flows back into the heat exchange copper pipe, realizing the rapid reduction of the oil temperature under continuous shock absorption and damping treatment, and avoiding the problems of reduced viscosity of the oil liquid caused by overheating and other risk problems.

[0015] (2) By utilizing the above heat exchange copper tube and the ethanol-water mixture stored therein, and cooperating with the pushing component arranged in the installation storage cover and the spraying component at the top of the installation part, during the continuous shock absorption process, as a large amount of ethanol-water mixture in the heat exchange copper tube absorbs heat and evaporates, the formed mixed gas is introduced into the pushing component to squeeze the lubricating oil in the upper cavity of the installation storage cover. Cooperating with the spraying component to squeeze and spray the emulsified oil, on the one hand, by using the pushing component to cooperate with the spraying of the lubricating oil, the energy is finally converted into spraying kinetic energy to consume the gas kinetic energy. On the other hand, it realizes the spraying treatment of the lubricating oil towards the main spring, and cooperates with the atomized lubricating oil to attach the lubricating oil to the outer surface of the main spring, realizing oil seal protection, reducing the oxidation corrosion speed, providing elastic deformation movement of the main spring after lubrication, and improving the service life.

[0016] (3) By adding a separation component between the outer cylinder and the inner cylinder, during the shock absorption work of the shock absorber, as the oil is squeezed into the storage cavity between the outer cylinder and the inner cylinder, the oil level rises and floods above the separation component, and when the oil level drops, it is filtered relative to the separation component to filter out the solid impurities in the oil. Cooperating with the flow channel design of the separation component, after the oil level rises and drops repeatedly, the solid impurities are fully separated and intercepted in the separation component, and gradually all the working damping oil in the shock absorber is separated in the separation component, avoiding affecting the hydraulic valve parts and ensuring the stable operation of the shock absorber. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present invention;

[0018] Figure 2 is a schematic cross-sectional view of the present invention;

[0019] Figure 3 is a schematic cross-sectional view of the inner cylinder and the outer cylinder of the present invention;

[0020] Figure 4 is a schematic connection diagram of the heat exchange copper tube and the pushing component of the present invention;

[0021] Figure 5 is a schematic cross-sectional view of the mounting seat and the installation storage cover of the present invention;

[0022] Figure 6 is a schematic cross-sectional view of the pushing component and the isolation ring of the present invention;

[0023] Figure 7 is a schematic diagram of the separation component of the present invention;

[0024] Figure 8 is a schematic cross-sectional view of the separation component of the present invention.

[0025] In the figure: 1. Outer cylinder; 2. Inner cylinder; 3. Piston mechanism; 4. Top mounting seat; 5. Spring mounting disc; 6. Main spring; 7. Dust cover; 8. Mounting part; 9. Heat exchange copper tube; 10. Mounting and storage cover; 11. Pushing component; 111. Movable ring; 112. Connecting sleeve; 113. Push rod; 114. Auxiliary spring; 12. Spraying component; 121. Curved tube; 122. Spraying hole; 123. Curved cavity; 13. Sealing seat; 14. Separation component; 141. Guide ring; 142. Filter ring; 143. Filter hole; 144. Bottom table; 145. Round table surface; 15. Isolation ring. Detailed implementation mode

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] As Figures 1 to 8 shown, the embodiment of the present invention provides a multi-stage adjustable automobile shock absorber, which includes a hydraulic strut body, a top mounting seat 4, a spring mounting disc 5 and a main spring 6. The hydraulic strut body includes an outer cylinder 1, an inner cylinder 2 and a piston mechanism 3. The top ends of the outer cylinder 1 and the inner cylinder 2 are fixedly connected with a mounting part 8. The inner cylinder 2 is fixedly sleeved inside the outer cylinder 1. One end of the piston mechanism 3 is movably sleeved in the inner cylinder 2, and the other end is fixed in the top mounting seat 4. A storage cavity is provided between the inner cylinder 2 and the outer cylinder 1. A heat exchange copper tube 9 is provided inside the storage cavity. The inner end of the heat exchange copper tube 9 is sealed. The other end of the heat exchange copper tube 9 passes through the outer cylinder 1 and extends to the outside. Ethanol-water mixture is stored in the heat exchange copper tube 9. An installation and storage cover 10 is fixedly sleeved outside the outer cylinder 1. A pushing component 11 and an isolation ring 15 are provided inside the installation and storage cover 10. The isolation ring 15 is fixed in the installation and storage cover 10 and divides an upper chamber and a lower chamber in the installation and storage cover 10. The upper chamber is filled with lubricating oil. The upper end of the heat exchange copper tube 9 is located in the installation and storage cover 10 and is internally communicated with the pushing component 11. A spraying component 12 is provided on the mounting part 8. The spraying component 12 is communicated with the upper chamber in the installation and storage cover 10.

[0028] Embodiment 1: When the shock absorber works, the piston rod in the piston mechanism 3 drives the piston head to move along the inside of the inner cylinder 2 and compresses the hydraulic oil. The temperature of the hydraulic oil in the storage cavity rises significantly under the throttling effect. The ethanol-water mixture inside the heat exchange copper tube 9 in the storage cavity quickly absorbs the heat of the oil through the heat exchange copper tube 9. Moreover, the ethanol-water mixture in the heat exchange copper tube 9 absorbs heat and vaporizes. The temperature of the hydraulic oil decreases, and the vaporized gas is introduced into the connecting sleeve 112 of the pushing component 11, and quickly pushes the push rod 113 to move upward along the inside of the connecting sleeve 112, and pushes the movable ring 111 to move along the upper cavity, compressing the lubricating oil stored inside the upper cavity, so that the lubricating oil flows into the curved cavity 123 in the spraying component 12 and sprays atomized lubricating oil toward the main spring 6 along the spraying hole 122.

[0029] First of all, by using the heat exchange copper tube 9 and the ethanol-water mixture stored inside, when the temperature of the oil in the storage cavity between the outer cylinder 1 and the inner cylinder 2 rises, the heat is quickly absorbed into the ethanol-water mixture through the heat exchange copper tube 9. By using the evaporation of the ethanol-water mixture after absorbing heat, the temperature of the oil is reduced, avoiding the problem of excessive oil temperature under continuous shock damping. Multiple groups of heat exchange copper tubes 9 are immersed in the oil, effectively absorbing heat, and the evaporation gas of the ethanol-water mixture is led upward to the installation storage cover 10 and is located outside the outer cylinder 1. After re-condensing with the cooling of the gas, it flows back into the heat exchange copper tube 9, realizing the rapid reduction of the oil temperature under continuous shock damping treatment and avoiding the problems of reduced oil viscosity and other risks caused by overheating.

[0030] In addition, by using the above heat exchange copper tube 9 and the ethanol-water mixture stored inside, and cooperating with the pushing component 11 arranged in the installation storage cover 10 and the spraying component 12 at the top of the installation part 8, during the continuous shock damping process, as a large amount of ethanol-water mixture in the heat exchange copper tube 9 absorbs heat and evaporates, the formed mixed gas is introduced into the pushing component 11 and realizes the extrusion of the lubricating oil in the upper cavity of the installation storage cover 10. Cooperating with the spraying component 12 to extrude and spray the emulsified oil. On the one hand, using the pushing component 11 to cooperate with the spraying of the lubricating oil to finally convert the energy into spraying kinetic energy, realizing the consumption of gas kinetic energy. On the other hand, realizing the spraying treatment of the lubricating oil toward the main spring 6, cooperating with the atomized lubricating oil to attach the lubricating oil to the outer surface of the main spring 6, realizing oil seal protection, reducing the oxidation corrosion speed, providing the elastic deformation action of the lubricated main spring 6, and improving the service life.

[0031] Among them, the piston mechanism 3 includes a piston rod and a piston head. Hydraulic valve components are provided at the bottom of the inner cylinder 2 and in the piston head. The interior of the inner cylinder 2 and the storage cavity are both filled with hydraulic oil. Nitrogen is filled in the storage cavity above the hydraulic oil. The number of spring mounting plates 5 is two, and the two spring mounting plates 5 are respectively fixed in the top mounting seat 4 and the mounting portion 8. The main spring 6 is located between the two spring mounting plates 5. A sealing seat 13 is fixedly provided at the top of the mounting portion 8. The sealing seat 13 is located outside the piston rod. A dust-proof cover 7 is sleeved outside the piston rod.

[0032] By utilizing the up and down movement of the piston head in the inner cylinder 2, damping throttling treatment of the hydraulic oil is achieved. The hydraulic valve component controls the throttling opening of the oil fluid to achieve multi-stage adjustment, which is an existing structure and is usually realized in cooperation with electromagnetic control. While ensuring internal sealing under nitrogen filling, by utilizing the compressibility of nitrogen, the change of the hydraulic oil level and the compressibility of nitrogen are permitted. The main spring 6 is used to achieve auxiliary elastic buffering. The sealing seat 13 realizes the oil seal treatment of the piston rod. The dust-proof cover 7 is an elastic cover that can be telescoped, which is an existing structure to achieve dust prevention for the piston rod.

[0033] Among them, the pushing component 11 includes a movable ring 111, a connecting sleeve 112, a push rod 113, and an auxiliary spring 114. The movable ring 111 is located in the upper chamber. The connecting sleeve 112 is located in the lower chamber and is fixedly connected to the bottom surface of the isolation ring 15. One end of the push rod 113 is fixed to the bottom surface of the movable ring 111, and the other end is movably sleeved in the connecting sleeve 112. One end of the auxiliary spring 114 is fixedly connected in the connecting sleeve 112, and the other end is fixedly connected to the push rod 113. The side surface of the connecting sleeve 112 is fixedly connected to the heat exchange copper tube 9. The heat exchange copper tube 9 is internally connected to the connecting sleeve 112. The upper end of the heat exchange copper tube 9 is located below the lower end of the push rod 113. The upper end of the heat exchange copper tube 9 is horizontally oriented and is aligned with the bottom of the inner cavity of the connecting sleeve 112.

[0034] The pushing component 11 is in communication with the upper end of the heat exchange copper tube 9 to achieve the export of the heat-absorbing evaporated gas, and cooperate with the push rod component to convert the gas kinetic energy into the moving mechanical energy of the movable ring 111. The auxiliary spring 114 facilitates elastic reset and resets after the gas liquefies and loses the driving force.

[0035] Among them, the ejection component 12 includes a curved tube 121, ejection holes 122, and a curved cavity 123. The curved cavity 123 is opened inside the mounting portion 8. The bottom of the mounting portion 8 is fixedly connected to the top of the mounting storage cover 10. The curved cavity 123 passes through the bottom of the mounting portion 8 and is in communication with the upper chamber of the mounting storage cover 10. The curved tube 121 is fixedly sleeved on the top of the mounting portion 8 and is in communication with the curved cavity 123. The upper end of the curved tube 121 is inclined towards the main spring 6. The ejection holes 122 are opened on the upper end surface of the curved tube 121.

[0036] The ejection component 12 cooperates with the pushing component 11 to achieve the extrusion and ejection of the stored lubricating oil under extrusion. On the one hand, it lubricates the surface of the main spring 6, and on the other hand, it releases energy.

[0037] Among them, a separation component 14 is fixedly arranged inside the storage cavity. The separation component 14 is fixedly sleeved outside the heat exchange copper tube 9. One side of the separation component 14 is connected to the inner wall of the outer cylinder 1, and there is a first annular gap between the other side of the separation component 14 and the inner cylinder 2.

[0038] Among them, the separation component 14 includes a guiding ring 141, a filtering ring 142, filtering holes 143, a bottom platform 144, and a conical surface 145. The filtering ring 142 is fixed outside the guiding ring 141. The filtering ring 142 is fixedly connected to the inner wall of the outer cylinder 1. The filtering holes 143 are opened on the filtering ring 142. The first annular gap is located between the guiding ring 141 and the inner cylinder 2. The bottom platform 144 is fixedly connected to the bottom of the guiding ring 141. The conical surface 145 is arranged on the top of the bottom platform 144 and is located below the filtering ring 142. An annular gap two is formed between the outer side edge of the bottom platform 144 and the inner wall of the outer cylinder 1.

[0039] The first annular gap allows the liquid level of the oil in the storage cavity to rise and flow through. The second annular gap is used for the return direction of the filtered oil. With the design of the conical surface 145, it is ensured that when the liquid level rises, it mainly rises from the first annular gap. The filtering ring 142 realizes the filtration and interception of solid particles, and comprehensively realizes effective separation and treatment.

[0040] Embodiment 2: During the operation of the shock absorber, after the hydraulic oil is compressed into the storage cavity between the outer cylinder 1 and the inner cylinder 2, the amount of hydraulic oil inside the storage cavity increases, the liquid level moves upward, compresses the compressible nitrogen in the storage cavity, and the hydraulic oil driving the internal mixed impurity particles to rise along the first annular gap between the guiding ring 141 and the inner cylinder 2 enters above the filtering ring 142. When the internal oil pressure in the storage cavity reversely flows back into the inner cylinder 2, the oil flows out along the filtering holes 143 and the conical surface 145 on the filtering ring 142, and the solid particle impurities are filtered on the filtering ring 142, completing the separation and independent storage of the internal particle impurities.

[0041] First, by adding a separation component 14 between the outer cylinder 1 and the inner cylinder 2, during the shock absorption work of the shock absorber, as the oil is extruded into the storage cavity between the outer cylinder 1 and the inner cylinder 2, the liquid level of the oil rises and overflows above the separation component 14. When the liquid level of the oil decreases, it is filtered relative to the separation component 14, filtering the solid impurities in the oil. With the flow channel design of the separation component 14, after the oil level rises and falls repeatedly, the solid impurities are fully separated and intercepted in the separation component 14, and gradually all the working damping oil in the shock absorber is separated in the separation component 14, avoiding affecting the hydraulic valve parts and ensuring the stable operation of the shock absorber.

[0042] Working principle and usage process of the present invention: When the shock absorber works, the piston rod in the piston mechanism 3 drives the piston head to move along the inside of the inner cylinder 2, compressing the hydraulic oil. The temperature of the hydraulic oil in the storage cavity rises significantly due to throttling. The ethanol-water mixture inside the heat exchange copper tube 9 in the storage cavity quickly absorbs the heat of the oil through the heat exchange copper tube 9, and the ethanol-water mixture in the heat exchange copper tube 9 absorbs heat and vaporizes. The temperature of the hydraulic oil decreases, and the vaporized gas is introduced into the connecting sleeve 112 of the pushing component 11, quickly pushing the push rod 113 to move upward along the inside of the connecting sleeve 112, and pushing the movable ring 111 to move along the upper cavity, compressing the lubricating oil stored inside the upper cavity, so that the lubricating oil flows into the curved cavity 123 in the spraying component 12 and sprays atomized lubricating oil toward the main spring 6 along the spraying hole 122. During the operation of the shock absorber, after the hydraulic oil is compressed into the storage cavity between the outer cylinder 1 and the inner cylinder 2, the amount of hydraulic oil inside the storage cavity increases, the liquid level moves upward, compressing the compressible nitrogen in the storage cavity, and guiding the hydraulic oil with the rising liquid level to drive the mixed impurity particles inside to move upward along the annular gap one between the guiding ring 141 and the inner cylinder 2 into the upper part of the filtering ring 142. When the oil pressure inside the storage cavity reversely flows back into the inner cylinder 2, the oil flows out through the filtering holes 143 and the round table surface 145 on the filtering ring 142, and the solid particle impurities are filtered on the filtering ring 142, completing the separation and independent storage of the internal particle impurities.

[0043] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-stage adjustable automobile shock absorber, comprising a hydraulic support body, a top mounting seat (4), a spring mounting plate (5) and a main spring (6), characterized in that: The hydraulic support body comprises an outer cylinder (1), an inner cylinder (2) and a piston mechanism (3); the top ends of the outer cylinder (1) and the inner cylinder (2) are fixedly connected with a mounting portion (8); the inner cylinder (2) is fixedly sleeved inside the outer cylinder (1); one end of the piston mechanism (3) is movably sleeved in the inner cylinder (2), and the other end is fixed in the top mounting seat (4); a storage cavity is provided between the inner cylinder (2) and the outer cylinder (1); a heat exchange copper tube (9) is provided inside the storage cavity; the inner end of the heat exchange copper tube (9) is sealed; the other end of the heat exchange copper tube (9) passes through the outer cylinder (1) and extends to the outside; the heat exchange copper tube (9) stores An ethanol-water mixture is provided, wherein the outer side of the outer cylinder (1) is fixedly sleeved with a mounting storage cover (10), the interior of the mounting storage cover (10) is provided with a pushing assembly (11) and an isolating ring (15), the isolating ring (15) is fixed in the mounting storage cover (10), and separates an upper chamber and a lower chamber in the mounting storage cover (10), the interior of the upper chamber is filled with lubricating oil, the upper end of the heat exchange copper tube (9) is located in the mounting storage cover (10), and is communicated with the interior of the pushing assembly (11), the mounting portion (8) is provided with a spray assembly (12), and the spray assembly (12) is communicated with the upper chamber in the mounting storage cover (10).

2. A multi-stage adjustable automobile shock absorber according to claim 1, characterized in that: The piston mechanism (3) comprises a piston rod and a piston head, a hydraulic valve is provided at the bottom of the inner cylinder (2) and in the piston head, the interior of the inner cylinder (2) and the storage chamber are filled with hydraulic oil, and the storage chamber is filled with nitrogen above the hydraulic oil.

3. A multi-stage adjustable automobile shock absorber according to claim 2, characterized in that: The number of the spring mounting disks (5) is two, and the two spring mounting disks (5) are respectively fixed in the top mounting seat (4) and the mounting portion (8). The main spring (6) is located between the two spring mounting disks (5). A sealing seat (13) is fixedly provided on the top of the mounting portion (8). The sealing seat (13) is located on the outer side of the piston rod. The outer side of the piston rod is provided with a dust cover (7).

4. The multi-stage adjustable automobile shock absorber according to claim 3, characterized in that: The pushing assembly (11) comprises a movable ring (111), a connecting sleeve (112), a push rod (113) and an auxiliary spring (114); the movable ring (111) is located in the upper chamber, the connecting sleeve (112) is located in the lower chamber and is fixedly connected to the bottom surface of the isolation ring (15); one end of the push rod (113) is fixed to the bottom surface of the movable ring (111), and the other end is movably sleeved in the connecting sleeve (112); one end of the auxiliary spring (114) is fixedly connected in the connecting sleeve (112), and the other end is fixedly connected to the push rod (113); the side surface of the connecting sleeve (112) is fixedly connected to the heat exchange copper tube (9), and the heat exchange copper tube (9) is connected to the inside of the connecting sleeve (112).

5. The multi-stage adjustable automobile shock absorber according to claim 4, characterized in that: The upper end of the heat exchange copper tube (9) is located below the lower end of the push rod (113), and the upper end of the heat exchange copper tube (9) is horizontally oriented and aligned with the bottom of the inner cavity of the connecting sleeve (112).

6. The multi-stage adjustable automobile shock absorber according to claim 5, characterized in that: The spray assembly (12) comprises a curved tube (121), a spray hole (122) and a curved cavity (123); the curved cavity (123) is arranged inside the mounting portion (8); the bottom of the mounting portion (8) is fixedly connected to the top of the mounting storage cover (10); the curved cavity (123) passes through the bottom of the mounting portion (8) and is communicated with the upper chamber of the mounting storage cover (10); the curved tube (121) is fixedly sleeved on the top of the mounting portion (8) and is communicated with the curved cavity (123); the upper end of the curved tube (121) is inclined toward the main spring (6); and the spray hole (122) is arranged on the upper end surface of the curved tube (121).

7. The multi-stage adjustable automobile shock absorber according to claim 6, characterized in that: A separation component (14) is fixedly provided inside the storage chamber. The separation component (14) is fixedly sleeved on the outside of the heat exchange copper tube (9). One side of the separation component (14) is connected to the inner wall of the outer tube (1), and an annular gap is provided between the other side of the separation component (14) and the inner tube (2).

8. The multi-stage adjustable automobile shock absorber according to claim 7, characterized in that: The separation assembly (14) comprises a guide ring (141), a filter ring (142), a filter hole (143), a bottom platform (144) and a truncated cone surface (145); the filter ring (142) is fixed to the outside of the guide ring (141); the filter ring (142) is fixedly connected to the inner wall of the outer cylinder (1); the filter hole (143) is provided on the filter ring (142); the annular gap 1 is located between the guide ring (141) and the inner cylinder (2); the bottom platform (144) is fixedly connected to the bottom of the guide ring (141); the truncated cone surface (145) is arranged on the top of the bottom platform (144) and is located below the filter ring (142); and annular gap 2 is formed between the outer edge of the bottom platform (144) and the inner wall of the outer cylinder (1).

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