Gas-liquid combined type shock absorber

Abstract

The invention discloses a gas-liquid combined type shock absorber, and relates to the technical field of shock absorbers. The problems that in the prior art, a traditional suspension of an automobile is composed of a shock absorber and a spring, the spring is a steel spring, the rigidity of the spring is initially designed and cannot be adjusted after production, and the comfort of a driver and passengers under different road conditions can be seriously affected due to the fact that the rigidity of the spring cannot be adjusted are solved. The device comprises a damper, a first energy storage device, a second energy storage device and a piston body, the piston upper cavity is communicated with the first energy storage device, the piston lower cavity is communicated with the second energy storage device, and a damper is arranged in an oil space formed by an oil space formed between the piston upper cavity and the first energy storage device, an oil space of the piston upper cavity and an oil space of the first energy storage device, so that oil flows through the damper when flowing, and the oil flows through the second energy storage device. The first energy storage device is arranged at the end of the piston cavity wall, and the second energy storage device is arranged at the end of the piston cavity wall.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle shock absorbers, and in particular to a gas-liquid composite shock absorber. Background Art

[0002] At present, the weight of new energy vehicles is gradually increasing due to the increase in cruising range and the weight of batteries. The inertia force in driving state increases due to the weight of the vehicle, which leads to the following problems. For example, when turning, the centrifugal force and inertia force will increase, which directly affects the driving experience and safety. How to adjust the body posture in time and quickly is particularly important, and new energy vehicles have sufficient power themselves, so the development direction of shock absorbers is electrification and intelligence, so as to realize the active control and intelligent control of shock absorbers.

[0003] The shock absorber is an important component in the vehicle suspension system. Conventional shock absorbers usually include a working cylinder filled with a damping fluid such as oil or gas, and a piston. The piston is arranged on a piston rod movably arranged in the cylinder. The function of the shock absorber is to quickly attenuate the vibration of the vehicle body and improve the vehicle's driving smoothness and ride comfort. The shock absorber damping is an important parameter for controlling its working resistance. Due to the complex and changeable road conditions, the corresponding required damping value also needs to be adjusted to better meet the comfort needs of the driver and passengers. Most of the dampers of existing types of shock absorbers cannot be adjusted electronically, so the dampers of the shock absorbers need to develop in the direction of electrification and intelligent control.

[0004] The traditional suspension of current cars is composed of shock absorbers and springs. The springs are steel springs, and the spring stiffness is initially designed and cannot be adjusted after production. The inability to adjust the hardness of the spring will seriously affect the comfort of the driver and passengers under different road conditions. The existing air springs have air bags that are exposed to the air and are easily affected by external environmental conditions and age quickly, such as strong ultraviolet rays, chemical pollution, etc. The air bags are easily damaged by foreign objects during driving, such as mud, sand, and gravel in the air bags, or sand, gravel, and other debris that may cause the air bags to rupture on the spot during driving, seriously affecting driving safety. Summary of the invention

[0005] The purpose of the present invention is to solve the problems mentioned in the above background technology, and further to provide a gas-liquid composite shock absorber, which can realize active control of the length, damping and "spring" stiffness of the shock absorber, and the adjustment function in three dimensions, thereby realizing the integrated high integration of spring, shock absorber and damper, so as to realize rapid adjustment of the vehicle body posture, and at the same time, the traditional spring can be omitted, further simplifying the vehicle body structure and reducing weight.

[0006] The technical solution adopted by the present invention to solve the above problems is: a gas-liquid composite shock absorber, comprising a damper, a first energy accumulator, a second energy accumulator and a piston body;

[0007] A piston rod is arranged inside the piston cavity wall of the piston body, and the interior of the piston cavity wall is a piston cavity, and the piston cavity is divided into an upper piston cavity and a lower piston cavity by a piston head at one end of the piston rod;

[0008] The upper chamber of the piston is communicated with the first energy accumulator, and the lower chamber of the piston is communicated with the second energy accumulator;

[0009] A damper is arranged inside the oil space formed between the upper chamber of the piston and the first accumulator, the oil space of the upper chamber of the piston, and the oil space of the first accumulator, so that the oil flows through the damper;

[0010] Or a damper is arranged inside the oil space formed by the oil space formed between the lower chamber of the piston and the second accumulator, the oil space of the lower chamber of the piston, and the oil space of the second accumulator, so that the oil flows through the damper;

[0011] Or a damper is arranged inside the oil space formed between the upper chamber of the piston and the first accumulator, the oil space of the upper chamber of the piston, and the oil space of the first accumulator, so that the oil flows through the damper; a damper is arranged inside the oil space formed between the lower chamber of the piston and the second accumulator, the oil space of the lower chamber of the piston, and the oil space of the second accumulator, so that the oil flows through the damper;

[0012] The first energy accumulator is arranged at the end of the piston cavity wall, and the second energy accumulator is arranged at the end of the piston cavity wall.

[0013] Furthermore, the first energy accumulator includes a first energy accumulator chamber and a first deformable gas storage chamber; the first deformable gas storage chamber is arranged inside the first energy accumulator chamber, and the first energy accumulator chamber is a chamber surrounded by a first energy accumulator outer wall, a first energy accumulator inner wall, a first energy accumulator upper wall and a first energy accumulator lower wall.

[0014] Further, a plurality of first energy accumulator oil grooves are evenly arranged on the circumference of one side of the outer wall of the first energy accumulator or the inner wall of the first energy accumulator close to the first deformable gas storage chamber, and a plurality of first energy accumulator oil passages are evenly arranged on the circumference of the upper wall of the first energy accumulator, and the first energy accumulator oil passages are connected to the corresponding first energy accumulator oil grooves;

[0015] Or a first energy accumulator oil partition is provided inside the first energy accumulator chamber, and the first energy accumulator oil partition is provided with a plurality of first energy accumulator oil holes;

[0016] Alternatively, a first energy accumulator oil passage groove and a first energy accumulator oil passage partition are simultaneously provided inside the first energy accumulator chamber.

[0017] Furthermore, the second energy accumulator includes a second energy accumulator chamber and a second deformable gas storage chamber; the second deformable gas storage chamber is arranged inside the second energy accumulator chamber, and the second energy accumulator chamber is a chamber surrounded by a second energy accumulator outer wall, a second energy accumulator inner wall, a second energy accumulator upper wall and a second energy accumulator lower wall.

[0018] Further, a plurality of second energy accumulator oil grooves are evenly arranged on the circumference of one side of the second energy accumulator outer wall or the second energy accumulator inner wall close to the second deformable gas storage chamber, and a plurality of second energy accumulator oil passages are evenly arranged on the circumference of the second energy accumulator lower wall, and the second energy accumulator oil passages are connected to the corresponding second energy accumulator oil grooves;

[0019] Or a second energy accumulator oil partition is provided inside the second energy accumulator chamber, and a plurality of second energy accumulator oil holes are provided on the second energy accumulator oil partition;

[0020] Alternatively, a second energy accumulator oil passage groove and a second energy accumulator oil passage partition are simultaneously provided inside the second energy accumulator chamber.

[0021] Furthermore, one end of the piston rod located inside the piston cavity is connected to a piston head, and the other end extending out of the piston cavity is provided with a fixed end, and a piston ring is installed on the piston head;

[0022] The oil space formed between the upper chamber of the piston and the first accumulator is an upper oil chamber, and the upper oil chamber is connected with the upper chamber of the piston through the first oil hole; or the upper chamber of the piston and the first accumulator are directly connected through the first oil hole;

[0023] The oil space formed between the piston lower chamber and the second accumulator is a lower oil chamber, and the lower oil chamber is connected with the piston lower chamber through the second oil hole; or the piston lower chamber and the second accumulator are directly connected through the second oil hole;

[0024] A one-way valve is arranged inside the oil space formed between the upper chamber of the piston and the first accumulator, the oil space of the upper chamber of the piston, and the oil space of the first accumulator;

[0025] Or a one-way valve is arranged inside the oil space formed by the oil space formed between the piston lower chamber and the second accumulator, the oil space of the piston lower chamber, and the oil space of the second accumulator;

[0026] Or a one-way valve is set inside the oil space formed between the upper chamber of the piston and the first accumulator, the oil space of the upper chamber of the piston, and the oil space of the first accumulator; a one-way valve is set inside the oil space formed between the lower chamber of the piston and the second accumulator, the oil space of the lower chamber of the piston, and the oil space of the second accumulator.

[0027] Furthermore, the shock absorber also includes a displacement sensor, which includes an electronic compartment, a measuring rod and a permanent magnetic ring;

[0028] The electronic chamber is arranged on the upper end cover, the permanent magnetic ring is arranged on the piston head, and the measuring rod is electrically connected with the electronic chamber; the measuring rod sequentially passes through the upper chamber of the piston and the permanent magnetic ring and then extends into the interior of the piston rod;

[0029] Or the shock absorber further includes a displacement sensor, which includes an electronic compartment, a measuring rod and a permanent magnetic ring;

[0030] The electronic compartment is fixedly connected to the fixed end of the piston rod, and the permanent magnetic ring is arranged on the lower end cover; the measuring rod is electrically connected to the electronic compartment; the measuring rod passes through the permanent magnetic ring and moves synchronously with the piston rod.

[0031] Further, the damper is an electromagnetic switch damper, which includes a base A, a switch plate A and a cover plate A; the cover plate A is fixedly connected to the base A, and the switch plate A is arranged between the base A and the cover plate A; a moving iron core A is installed on one side of the switch plate A close to the side wall of the base A, and a fixed iron core A is installed at a position corresponding to the moving iron core A on the side wall of the base A;

[0032] The cover plate A is provided with a cover plate fixing hole A and a cover plate oil passage A, and the bottom of the base A is provided with a base fixing hole A and a base oil passage A. The cover plate fixing hole A and the base fixing hole A are arranged correspondingly; the cover plate oil passage A and the base oil passage A constitute the damper oil passage.

[0033] The switch plate A is provided with an adjustment hole A and an adjustment auxiliary hole A, and the adjustment hole A and the adjustment auxiliary hole A are arranged at intervals from each other;

[0034] The upper and lower surfaces of the switch plate A are both provided with ball grooves A or concave-convex grooves, and the switch plate A is slidably connected with the base A and the cover plate A through the balls A in the ball grooves A or the concave-convex grooves;

[0035] The surface where the base A or the cover plate A contacts the switch plate A is provided with a gear limit bead A, the lower part of the gear limit bead A is provided with a gear limit spring A, and the contact surface between the switch plate A and the gear limit bead A is provided with a gear limit pit A according to the gear position.

[0036] Further, the damper is an adjustable plate damper B, which includes a fixed plate B, an adjustable plate B, a cover plate B and a rotating mechanism B; the adjustable plate B is rotatably connected between the fixed plate B and the cover plate B, the cover plate B and the fixed plate B are fixedly connected, the rotating mechanism B includes a transmission rod B, one end of the transmission rod B is fixedly connected to the rotating mechanism B, and the other end is fixedly connected to the adjusting plate B, and the rotating mechanism B drives the adjusting plate B to rotate through the transmission rod B;

[0037] The fixed plate B is divided into a plurality of sector-shaped areas, which are the same as the sector-shaped areas divided by the cover plate B and the adjustment plate B;

[0038] The fixed plate B is provided with a fixed plate fixed channel B, a fixed plate auxiliary channel B and a fixed plate oil passage B according to the sector-shaped area;

[0039] The cover plate B is provided with a cover plate fixing channel B and a cover plate auxiliary channel B according to the sector-shaped area. In the same sector-shaped area, the cover plate fixing channel B is arranged correspondingly to the fixing channel B of the fixing plate, and the cover plate auxiliary channel B is arranged correspondingly to the auxiliary channel B of the fixing plate;

[0040] The adjusting plate B is provided with adjusting channels B and adjusting auxiliary channels B according to the sector-shaped area. In the same sector-shaped area, the adjusting channels B are arranged corresponding to the fixed channels B of the fixing plate, and the adjusting auxiliary channels B are arranged corresponding to the auxiliary channels B of the fixing plate.

[0041] The upper and lower surfaces of the adjustment plate B are both provided with ball grooves B or concave-convex grooves, and the adjustment plate B is slidably connected with the fixed plate B and the cover plate B through the balls B in the ball grooves B or the concave-convex grooves;

[0042] The surface where the fixed plate B or the cover plate B contacts the adjusting plate B is provided with a gear limit bead B, and the lower part of the gear limit bead B is provided with a gear limit spring B; the contact surface between the adjusting plate B and the gear limit bead B is provided with a gear limit pit B according to the gear position;

[0043] The adjusting plate damper B also includes a total limiter B, which includes a total limit block B and a total limit slot B; the total limit block B is arranged on the adjusting plate B in contact with the cover plate B; the total limit slot B is arranged on the cover plate B in contact with the adjusting plate B, and the total limit block B is slidably connected to the total limit slot B.

[0044] Further, the damper is an adjustable cylinder damper, which includes an adjustable cylinder C, a fixed cylinder C and a rotating mechanism C; the rotating mechanism C includes a transmission rod C, one end of the transmission rod C is fixedly connected to the rotating mechanism C, and the other end of the transmission rod C is fixedly connected to the adjusting cylinder C, and the rotating mechanism C drives the adjusting cylinder C to rotate through the transmission rod C;

[0045] The fixed cylinder C is divided into a plurality of sector-shaped areas, which are the same as the sector-shaped areas divided by the adjustment cylinder C;

[0046] The fixed cylinder C is provided with a fixed cylinder fixed channel C and a fixed cylinder auxiliary channel C according to the sector-shaped area;

[0047] The adjusting tube C is provided with adjusting channels C and adjusting auxiliary channels C according to the sector-shaped area. In the same sector-shaped area, the adjusting channels C are arranged correspondingly to the fixed channels C of the fixing tube, and the adjusting auxiliary channels C are arranged correspondingly to the auxiliary channels C of the fixing tube.

[0048] The adjusting cylinder C is rotatably connected to the fixed cylinder C through the adjusting cylinder upper bearing C and the adjusting cylinder lower bearing C;

[0049] The adjustable cylinder damper also includes a fixed cylinder cover plate C; the surface of the fixed cylinder cover plate C in contact with the adjusting plate C is provided with a gear limit bead C, and the lower part of the gear limit bead C is provided with a gear limit spring C; the contact surface between the adjusting cylinder C and the gear limit bead C is provided with a gear limit pit C according to the gear position;

[0050] The adjustable cylinder damper also includes a total limiter C, which includes a total limit block C and a total limit groove C; the total limit block C is arranged on the adjustable cylinder C in contact with the fixed cylinder cover plate C; the total limit groove C is arranged on the fixed cylinder cover plate C in contact with the adjustable cylinder C, and the total limit block C is slidably connected to the total limit groove C.

[0051] Further description of the present invention:

[0052] 1. The use of the damper is not limited to the damper mentioned in this embodiment, and other dampers of the prior art that conform to this embodiment may also be used.

[0053] 2. The material of the deformable air storage chamber can be rubber, elastically deformable metal, etc.

[0054] 3. The shape and implementation of the deformable air storage chamber can be varied. It can be a complete deformable air storage chamber, or a deformable air storage chamber formed by combining the inner wall or outer wall of the shock absorber, etc.

[0055] 4. The one-way valve, as a directional opening and closing element, can control the opening and closing of the channel when the oil flows in different directions. The one-way valve used in the present invention can also be replaced by existing technologies with equivalent functions, such as spring plus steel ball, spring sheet, etc., and the present invention will not give detailed examples.

[0056] 5. The "outside" in the present invention refers to the outer edge of the structure, emphasizing the external surface where the structure is located.

[0057] 6. The "end" in the present invention refers to the terminal portion of an object or a component.

[0058] 7. The "external" in the present invention refers to the space outside the structure, emphasizing the external space where the structure is located. The energy accumulator is arranged outside the piston body, and is independent of the implementation method of the piston body. The energy accumulator and the piston body can be connected by a hard component, such as an oil chamber, or by a flexible pipe.

[0059] The present invention has the following beneficial technical effects:

[0060] First, the main structure of a gas-liquid composite shock absorber of the present invention has the following beneficial technical effects:

[0061] 1. From a functional perspective, the main structure realizes all the functions of the shock absorber and the spring: the spring's retractable and force-bearing functions, and the shock absorber's damping function during expansion and contraction, achieving a high degree of integration of structure and function.

[0062] Damping function, the present invention mentions that a damper is arranged inside the oil space formed by the oil space formed between the upper chamber of the piston and the first accumulator, the oil space of the upper chamber of the piston, and the oil space of the first accumulator, so that the oil flows through the damper;

[0063] Or a damper is arranged inside the oil space formed by the oil space formed between the lower chamber of the piston and the second accumulator, the oil space of the lower chamber of the piston, and the oil space of the second accumulator, so that the oil flows through the damper;

[0064] Or a damper is arranged inside the oil space formed between the upper chamber of the piston and the first energy accumulator, the oil space of the upper chamber of the piston, and the oil space of the first energy accumulator, so that the oil flows through the damper; a damper is arranged inside the oil space formed between the lower chamber of the piston and the second energy accumulator, the oil space of the lower chamber of the piston, and the oil space of the second energy accumulator, so that the oil flows through the damper. The damper is the position where damping is generated. When the piston moves, the oil passes through the damper, thereby generating a damping force, thereby realizing the function of a shock absorber.

[0065] The accumulator is equipped with a deformable gas storage chamber, which has the following functions:

[0066] (1) Prevent compressible gas from mixing with oil and causing emulsification.

[0067] (2) Prevent compressible gas from entering the damper and causing damping failure.

[0068] (3) Prevent compressible gas from entering the piston chamber, causing seal failure.

[0069] Spring function, the piston cavity used in the present invention is divided into an upper piston chamber and a lower piston chamber by a piston head at one end of a piston rod; the upper piston chamber is connected to a first energy accumulator, and the lower piston chamber is connected to a second energy accumulator. Such a structure enables the force to be transmitted to the oil through the piston rod and the piston, and then transmitted to the deformable air storage chamber through the oil. The deformable air storage chamber is compressed, and the gas pressure in the deformable air storage chamber increases, generating a rebound force, thereby realizing the function of a spring.

[0070] Traditional shock absorbers do not have spring functions, and do not achieve a high degree of integration of structure and function.

[0071] 2. From the perspective of mechanics, the force of the deformable air storage chamber: the force is transmitted to the oil through the piston rod and piston, and then transmitted to the force surface of the deformable air storage chamber through the oil in all directions. Compared with the traditional structural parts that directly contact and transmit the force to the deformable air storage chamber, it has great advantages. However, the existing traditional structural parts directly contact the deformable air storage chamber, and the force is directly transmitted between the contact surfaces of the two, which is easy to cause friction and uneven force, affecting the service life; or it is easy to produce creases on the non-contact surface, and the service life is short.

[0072] 3. From a mechanical point of view, the first accumulator is used as a force-bearing chamber and the second accumulator is used as a non-force-bearing chamber. The force-bearing chamber is used to directly bear the pressure transmitted by the piston; when the piston moves up and down, the volume of the piston lower chamber changes, and the non-force-bearing chamber is responsible for supplying and receiving the changed oil volume in the piston lower chamber; when the piston rod is extended to the longest, the deformable air storage chamber of the second accumulator is compressed to increase the pressure, and the pressure in the piston lower chamber increases, which puts pressure on the piston and prompts the piston to return, playing a certain auxiliary role. This ensures that when one wheel of the car is suspended in the air, the shock absorber does not extend all the way to the bottom, which plays a certain role in vehicle safety. Traditional shock absorbers do not have force-bearing chambers and non-force-bearing chambers, let alone the auxiliary function of non-force-bearing chambers.

[0073] 4. From the perspective of thermodynamics, the deformable air storage chamber soaked in oil has excellent heat dissipation because the thermal conductivity of the oil is high. When heat is generated, the oil can quickly transfer the heat to the shell and dissipate the heat in the air. The deformable air storage chamber can quickly conduct and dissipate heat, effectively avoiding the problem of aging of the deformable air storage chamber at high temperatures and extending the service life. However, the air bag in the prior art is exposed to the air, and the thermal conductivity of the air is low, and the heat transfer is slower. When the shock absorber moves violently, it is easy to generate heat accumulation inside, causing the temperature to be too high and affecting the service life.

[0074] The fixed iron core of the damper contains a coil, which has excellent heat dissipation when soaked in oil. Because the thermal conductivity of the oil is high, when the coil generates heat, the oil can quickly transfer the heat to the shell and dissipate the heat in the air. The coil of the fixed iron core can quickly conduct and dissipate heat, effectively avoiding the problem of aging of the coil of the fixed iron core at high temperatures and extending the service life. The coil of the prior art is exposed to the air, which has a low thermal conductivity and slower heat transfer. When the damper is adjusted quickly, at high frequency, and for a long time, it is easy to generate heat accumulation inside, resulting in excessive temperature and affecting the service life.

[0075] 5. From the perspective of safety, the deformable air storage chamber is inside the shock absorber and is protected by an outer wall. It has the following advantages: First, if the outer wall of the energy storage device is strong enough, the deformable air storage chamber will not burst; second, under the protection of the outer wall, it can be isolated from damage by external factors, such as strong ultraviolet rays, chemical pollution, mud, sand, and other foreign objects. However, the airbag of the existing air spring is exposed to the air and is easily affected by external environmental conditions and ages rapidly, such as strong ultraviolet rays, chemical pollution, etc.; the airbag is easily damaged by foreign objects during driving, for example, mud, sand, stones, etc. are caught in the airbag, or the airbag is easily impacted (impacted) by fragments such as sand and stones during driving, which directly causes the airbag to rupture on the spot, seriously affecting driving safety.

[0076] 6. From the perspective of controllability (expansion), the oil in the upper and lower chambers is adjustable, which can accurately and quickly control the movement of the piston, which provides the basic conditions for intelligent control or adjustment of the vehicle body.

[0077] 7. From the perspective of controllability (expansion), the pressure and volume of the upper and lower deformable air storage chambers are adjustable, and the hardness of the deformable air storage chambers can be controlled, which provides the basic condition for the adjustable stiffness of the "spring".

[0078] Second, the length adjustment of the gas-liquid composite shock absorber of the present invention

[0079] There are two ways: first, by adjusting the expansion degree of the deformable air storage chamber set in the accumulator through the charging and discharging holes; second, by adjusting the volume of the oil in the energy storage chamber and the piston cavity through the oil inlet and outlet. When the length is adjusted separately or simultaneously in the two ways, the vehicle body posture can be actively controlled at any time when the vehicle is moving or stationary, for example, the vehicle body can be actively adjusted to rise and fall, and the vehicle body can be actively adjusted to suppress the left and right tilts caused by turning during driving, the forward tilt caused by braking or going downhill, the backward tilt caused by accelerating or going uphill, and other vehicle body postures in various situations.

[0080] However, most of the existing shock absorbers cannot adjust the length of the shock absorber due to their structural form, and cannot achieve active control of the vehicle body posture. There are existing technologies that can adjust the lifting and lowering of the vehicle body, such as air suspension, but the existing air springs cannot accurately and quickly adjust the vehicle body posture. The main reason is that the volume of air under different pressures is different, so it is impossible to accurately and quickly adjust the required vehicle body posture. In addition, the outlet pressure and flow value of the air compressor pump are constantly changing, and a long reaction time is required. Therefore, most of them are only suitable for adjusting the vehicle height in a stationary state, and are not suitable for dynamic, rapid and accurate adjustment of the vehicle body posture.

[0081] Third, the damping adjustment of the gas-liquid composite shock absorber of the present invention

[0082] The three dampers used in the present invention control the gear position of the switch plate, the adjustment plate or the adjustment cylinder through the electronic control system, thereby adjusting the oil flow area of ​​the oil, and then adjusting the damping force of the shock absorber. The electronic control system controls the damping force of the shock absorber, and the response is faster, more sensitive, and more direct. This adjustment method is more flexible, so that active intelligent control of the vehicle body posture can be achieved. For example, the damping is increased during emergency braking to suppress the forward tilt of the vehicle; the damping is reduced on uneven roads to make the driving experience more comfortable; the damping is increased on flat or high-speed sections to make the vehicle more stable.

[0083] Traditional shock absorbers cannot actively adjust the size of the damping force; although the modified shock absorbers on the market can actively adjust the size of the damping force, they need to be manually adjusted when the vehicle is stationary. They cannot be adjusted at any time according to road conditions or emergencies while the vehicle is moving. They lack flexibility and are inconvenient to use.

[0084] The damper is equipped with an auxiliary channel, which is used to ensure the minimum oil flow area when the damper is adjusted to the maximum damping force or when it is misoperated, so as to ensure the normal use of the shock absorber. The auxiliary channel can be optimized according to different design parameters, leaving optional means for subsequent parameter design.

[0085] The damper is equipped with a gear limit bead, which serves the following purposes:

[0086] 1. As long as the limit bead moves to the edge of the limit pit, it can move smoothly to the center of the limit pit. This can avoid the electric control mechanism's insufficient accuracy, which will affect the switch plate, adjustment plate or adjustment cylinder's inability to accurately reach the gear position. If this affects the switch plate, adjustment plate or adjustment cylinder, the hole and the fixed hole cannot completely overlap, which will reduce the oil flow area of ​​the hole and affect the damping.

[0087] 2. Its function is also to limit the displacement of the switch plate, the adjustment plate or the adjustment cylinder when the limit bead and the limit pit are matched together, so that the damper can stop power supply after completing the damping adjustment, saving vehicle battery power.

[0088] Fourth, the "spring" stiffness adjustment of a gas-liquid composite shock absorber of the present invention

[0089] The present invention adjusts the hardness of the deformable air storage chamber by charging and discharging air holes to adjust the air pressure value in the deformable air storage chamber in the energy accumulator, thereby realizing the adjustment of the "spring" stiffness.

[0090] Fifth, the first and second energy accumulators of the present invention are provided with oil partitions or oil grooves. When the energy storage chamber is filled with oil, when the deformable air storage chamber is completely in contact with the inner cylinder wall, the oil is quickly passed to the contact surface, which plays a role in guiding the oil and prevents the deformable air storage chamber from being deformed when it is compressed, thereby achieving the purpose of quickly filling the energy storage chamber with oil; when the energy storage chamber is drained of oil, the deformable air storage chamber is prevented from being partially stored in the interior due to uneven pressure, so that the deformable air storage chamber can be completely in contact with the inner cylinder wall, thereby increasing the use efficiency of the deformable air storage chamber.

[0091] Sixth, the oil leakage risk of the present invention is relatively small

[0092] 1. Both the upper and lower piston chambers are connected to the energy accumulator, and the upper chamber serves as the main force-bearing chamber. The upper chamber is connected to the first energy accumulator, and the structure is closed, without the risk of oil leakage due to force.

[0093] 2. When the piston head works for a long time, there will be a risk of oil leakage, but this phenomenon only occurs between the internal cavities of the shock absorber, and there is no external leakage.

[0094] 3. The lower chamber is not the main force-bearing chamber, and the pressure is relatively small. The function of the second energy accumulator is to buffer and store oil, and the risk of oil leakage is relatively small.

[0095] Therefore, the sealing of the present invention is more reasonable and reliable.

[0096] Seventh, a one-way valve is provided in the present invention, and the one-way valve can preliminarily control the rebound speed of the shock absorber. Since different types of vehicles have different requirements for suspension stiffness, the installation direction and number of the one-way valve can be adjusted. The one-way valve preliminarily controls the flow rate of the oil and works together with the damper to meet the suspension stiffness requirements of different types of vehicles.

[0097] Eighth, in summary, the present invention has significant technical advancements in both technology and structure:

[0098] 1. Technically, it is possible to actively control the length, damping and "spring" stiffness of the shock absorber, with adjustment functions in three dimensions.

[0099] 2. Structurally, the gas-liquid composite shock absorber of the present invention realizes a highly integrated "spring", shock absorber and damper; the chassis can omit the traditional spring, further simplify the body structure, reduce the number of chassis parts, and realize a more streamlined chassis structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0100] Figure 1 It is a schematic diagram of the structure of the present invention;

[0101] Figure 2 is a cross-sectional view of the present invention;

[0102] Figure 3 is an axonometric view of the present invention;

[0103] Figure 4 is an exploded view of the present invention;

[0104] Figure 5 It is a structural schematic diagram of an electromagnetic switch damper;

[0105] Figure 6 yes Figure 5 A top view of

[0106] Figure 7 is a schematic structural diagram of a second embodiment of the present invention;

[0107] Figure 8 is a schematic structural diagram of a third embodiment of the present invention;

[0108] Fig. 9 is a schematic structural diagram of a fourth embodiment of the present invention;

[0109] Fig.10 is a schematic structural diagram of a fifth embodiment of the present invention;

[0110] Fig.11 is a structural schematic diagram of a sixth embodiment of the present invention;

[0111] Fig.12 is a schematic structural diagram of a seventh embodiment of the present invention;

[0112] Fig.13 is a schematic structural diagram of an eighth embodiment of the present invention;

[0113] Fig.14 is a schematic structural diagram of a ninth embodiment of the present invention;

[0114] Fig.15 is a schematic structural diagram of a tenth embodiment of the present invention;

[0115] Fig.16 is a schematic structural diagram of an eleventh embodiment of the present invention;

[0116] Fig.17 is a schematic structural diagram of a twelfth embodiment of the present invention;

[0117] Fig.18 It is a structural schematic diagram of an adjustable plate damper;

[0118] Fig.19 is a schematic structural diagram of an embodiment using an adjustable plate damper;

[0119] Fig. 20 It is a schematic diagram of the structure of the adjustable cylinder damper;

[0120] Fig.21 is a schematic structural diagram of an embodiment using an adjustable cylinder damper;

[0121] In the figure, 11, the first energy accumulator; 1110, the first energy accumulator chamber; 1120, the first deformable gas storage chamber; 1130, the first energy accumulator outer wall; 1131, the first charge and discharge hole; 1140, the first energy accumulator inner wall; 1141, the first energy accumulator oil groove; 1150, the first energy accumulator upper wall; 1151, the first energy accumulator oil passage; 1160, the first energy accumulator lower wall; 1170, the first energy accumulator oil partition; 1171, the first energy accumulator oil hole;

[0122] 12. Second energy accumulator; 1210. Second energy accumulator chamber; 1220. Second deformable gas storage chamber; 1230. Second energy accumulator outer wall; 1231. Second charge and discharge hole; 1240. Second energy accumulator inner wall; 1241. Second energy accumulator oil groove; 1250. Second energy accumulator upper wall; 1251. Second energy accumulator oil passage; 1260. Second energy accumulator lower wall; 1270. Second energy accumulator oil partition; 1271. Second energy accumulator oil hole;

[0123] 13. Piston body; 1310. Piston head; 1311. Piston ring; 1320. Piston upper chamber; 1330. Piston lower chamber; 1340. Piston chamber wall; 1350. Piston rod; 1351. Fixed end;

[0124] 14. Electromagnetic switch damper; 1410. Base A; 1411. Shift limit spring A; 1412. Shift limit bead A; 1413. Base fixing channel A; 1414. Base oil passage A; 1420. Switch plate A; 1421. Moving iron core A; 1422. Adjustment channel A; 1423. Adjustment auxiliary channel A; 1424. Shift limit pit A; 1425. Ball groove A; 1426. Ball A; 1430. Fixed iron core A; 1440. Cover plate A; 1441. Cover plate fixing channel A; 1442. Cover plate oil passage A;

[0125] 15. Upper oil passage chamber; 1510. Upper oil passage chamber; 1520. Upper oil passage chamber outer wall; 1530. Upper oil passage chamber lower wall; 1540. Upper oil passage chamber upper wall;

[0126] 16, lower oil chamber; 1610, lower oil chamber; 1620, outer wall of lower oil chamber; 1630, inner wall of lower oil chamber; 1640, upper wall of lower oil chamber; 1650, lower wall of lower oil chamber;

[0127] 17. Accessories and sealing structure; 1710. Lower end cover; 1711. Sealing oil seal; 1712. Dustproof oil seal; 1720. Sealing rubber sleeve; 1730. Sealing rubber sleeve lower end cover; 1740. Upper end cover; 1750. One-way valve; 1751. One-way valve retaining ring; 1760. First oil hole; 1770. Second oil hole; 1780. First oil inlet and outlet; 1790. Second oil inlet and outlet;

[0128] 18. displacement sensor; 1810. electronic compartment; 1820. measuring rod; 1830. permanent magnetic ring;

[0129] 19. Adjustment orifice plate motor damper; 1910. Fixed plate B; 1911. Fixed plate fixed channel B; 1912. Fixed plate auxiliary channel B; 1913. Fixed plate oil passage B; 1914. Shift limit spring B; 1915. Shift limit bead B; 1920. Adjustment plate B; 1921. Adjustment channel B; 1922. Adjustment auxiliary channel B; 1923. Ball groove B; 1 924, ball bearing B; 1925, gear limit pit B; 1930, cover plate B; 1931, cover plate fixing channel B; 1932, cover plate auxiliary channel B; 1940, rotating mechanism B; 1941, transmission rod B; 1942, transmission rod upper bearing B; 1943, transmission rod lower bearing B; 1950, total limiter B; 1951, total limit block B; 1952, total limit slot B;

[0130] 20. Adjustment cylinder damper; 2010. Adjustment cylinder C; 2011. Adjustment channel C; 2012. Adjustment auxiliary channel C; 2013. Adjustment cylinder upper bearing C; 2014. Adjustment cylinder lower bearing C; 2015. Gear limit pit C; 2020. Fixed cylinder C; 2021. Fixed cylinder fixed channel C; 2022. Fixed cylinder auxiliary channel C; 2030. Rotation mechanism C; 2031. Transmission rod C; 2032. Transmission rod upper bearing C; 2033. Transmission rod lower bearing C; 2040. Fixed cylinder cover C; 2041. Gear limit spring C; 2042. Gear limit bead C; 2050. Total limiter C; 2051. Total limit block C; 2052. Total limit groove C. DETAILED DESCRIPTION

[0131] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0132] Specific implementation method 1: Combination Figures 1 to 6 The present embodiment is described. In the embodiment, a gas-liquid composite shock absorber includes a damper, a first energy accumulator 11, a second energy accumulator 12 and a piston body 13; a piston rod 1350 is arranged inside the piston cavity wall 1340 of the piston body 13, and the interior of the piston cavity wall 1340 is a piston cavity, and the piston cavity is divided into an upper piston chamber 1320 and a lower piston chamber 1330 by a piston head 1310 at one end of the piston rod 1350; the upper piston chamber 1320 and the first The accumulator 11 is connected, and the lower chamber 1330 of the piston is connected to the second accumulator 12; a damper is arranged inside the oil space formed between the upper chamber 1320 of the piston and the first accumulator 11, the oil space of the upper chamber 1320 of the piston, and the oil space of the first accumulator 11, so that the oil flows through the damper; the first accumulator 11 is arranged at the end of the piston cavity wall 1340, and the second accumulator 12 is arranged at the end of the piston cavity wall 1340.

[0133] Notes on damper setting positions:

[0134] There are three ways to set the damper:

[0135] 1. A damper is arranged inside the oil space formed between the piston upper chamber 1320 and the first accumulator 11, the oil space of the piston upper chamber 1320, and the oil space of the first accumulator 11, so that the oil flows through the damper.

[0136] 2. A damper is arranged inside the oil space formed between the piston lower chamber 1330 and the second accumulator 12, the oil space of the piston lower chamber 1330, and the oil space of the second accumulator 12, so that the oil flows through the damper.

[0137] 3. A damper is arranged inside the oil space formed between the upper chamber 1320 of the piston and the first energy accumulator 11, the oil space of the upper chamber 1320 of the piston, and the oil space of the first energy accumulator 11, so that the oil flows through the damper; a damper is arranged inside the oil space formed between the lower chamber 1330 of the piston and the second energy accumulator 12, the oil space of the lower chamber 1330 of the piston, and the oil space of the second energy accumulator 12, so that the oil flows through the damper.

[0138] exist Figures 1 to 6In the described implementation mode, the damper is set in the first of the three options mentioned above. Through the position described in the first option, it is easy to think of the positions described in the second and third options, which is obvious. Therefore, the contents of the second and third options are no longer reflected in this embodiment.

[0139] In a preferred embodiment, the first energy accumulator 11 includes a first energy accumulator chamber 1110 and a first deformable gas storage chamber 1120; the first deformable gas storage chamber 1120 is arranged inside the first energy accumulator chamber 1110, and the first energy accumulator chamber 1110 is a chamber surrounded by a first energy accumulator outer wall 1130, a first energy accumulator inner wall 1140, a first energy accumulator upper wall 1150 and a first energy accumulator lower wall 1160.

[0140] In a preferred embodiment, a first accumulator inner wall 1140 is evenly provided with a plurality of first accumulator oil grooves 1141 on one side of the first deformable gas storage chamber 1120, and a first accumulator upper wall 1150 is evenly provided with a plurality of first accumulator oil passages 1151 on the circumference, and the first accumulator oil passages 1151 are communicated with the corresponding first accumulator oil grooves 1141;

[0141] In a preferred embodiment, the second energy accumulator 12 includes a second energy accumulator chamber 1210 and a second deformable gas storage chamber 1220; the second deformable gas storage chamber 1220 is arranged inside the second energy accumulator chamber 1210, and the second energy accumulator chamber 1210 is a chamber surrounded by a second energy accumulator outer wall 1230, a second energy accumulator inner wall 1240, a second energy accumulator upper wall 1250 and a second energy accumulator lower wall 1260.

[0142] In a preferred embodiment, a plurality of second energy accumulator oil grooves 1241 are evenly arranged on the circumference of one side of the second energy accumulator inner wall 1240 close to the second deformable gas storage chamber 1220, and a plurality of second energy accumulator oil passages 1261 are evenly arranged on the circumference of the second energy accumulator lower wall 1260, and the second energy accumulator oil passages 1261 are communicated with the corresponding second energy accumulator oil grooves 1241;

[0143] Description of the deformable gas storage chamber:

[0144] 1. The material of the deformable air storage chamber can be rubber, elastically deformable metal, etc.

[0145] 2. The shape and implementation of the deformable air storage chamber can be varied. It can be a complete deformable air storage chamber, or a deformable air storage chamber formed by combining the inner wall or outer wall of the shock absorber, etc.

[0146] Description of the oil tank:

[0147] When the energy storage chamber is filled with oil, when the deformable air storage chamber is completely in contact with the inner cylinder wall, the oil is quickly passed through the oil groove to the contact surface, which plays a role in guiding the oil and prevents the deformable air storage chamber from being deformed when being compressed, thereby achieving the purpose of quickly filling the energy storage chamber with oil; when the energy storage chamber is drained of oil, the deformable air storage chamber is prevented from being partially stored with oil due to uneven pressure, so that the deformable air storage chamber can be completely in contact with the inner cylinder wall, thereby increasing the use efficiency of the deformable air storage chamber.

[0148] In a preferred embodiment, the first deformable gas storage chamber 1120 is provided with a first charging and discharging hole 1131, and the first charging and discharging hole 1131 extends out of the first energy storage outer wall 1130; the second deformable gas storage chamber 1220 is provided with a second charging and discharging hole 1231, and the second charging and discharging hole 1231 extends out of the second energy storage outer wall 1230;

[0149] In a preferred embodiment, one end of the piston rod 1350 located inside the piston cavity is connected to the piston head 1310, and the other end extending out of the piston cavity is provided with a fixed end 1351, and a piston ring 1311 is installed on the piston head 1310;

[0150] The oil space formed between the piston upper chamber 1320 and the first accumulator 11 is an upper oil chamber 15, which is connected to the piston upper chamber 1320 through the first oil hole 1760; the oil space formed between the piston lower chamber 1330 and the second accumulator 12 is a lower oil chamber 16, which is connected to the piston lower chamber 1330 through the second oil hole 1770;

[0151] A one-way valve is arranged inside the oil space formed between the piston upper chamber 1320 and the first accumulator 11 , the oil space of the piston upper chamber 1320 , and the oil space of the first accumulator 11 .

[0152] In a preferred embodiment, the interior of the upper oil chamber 15 is an upper oil chamber 1510, and the upper oil chamber 1510 is a chamber surrounded by an upper oil chamber outer wall 1520, an upper oil chamber lower wall 1530, and an upper oil chamber upper wall 1540;

[0153] The interior of the lower oil chamber 16 is a lower oil chamber 1610 , which is a chamber surrounded by a lower oil chamber outer wall 1620 , a lower oil chamber inner wall 1630 , a lower oil chamber upper wall 1640 and a lower oil chamber lower wall 1650 .

[0154] The communication mode between the piston chamber and the energy accumulator in the present invention is as follows:

[0155] 1. The piston upper chamber 1320 is directly connected to the first energy accumulator 11 , or the piston upper chamber 1320 is connected to the first energy accumulator 11 through the upper oil chamber 15 .

[0156] 2. The piston lower chamber 1330 is directly connected to the second energy accumulator 12 , or the piston lower chamber 1330 is connected to the second energy accumulator 12 through the lower oil chamber 16 .

[0157] In this embodiment, the piston upper chamber 1320 is connected to the first accumulator 11 through the upper oil chamber 15, and the piston lower chamber 1330 is directly connected to the second accumulator 12. Other combinations of connection methods are obvious and are not shown in this embodiment.

[0158] Description of the one-way valve:

[0159] There are three ways to set up a one-way valve:

[0160] 1. A one-way valve is arranged inside the oil space formed between the piston upper chamber 1320 and the first accumulator 11 , the oil space of the piston upper chamber 1320 , and the oil space of the first accumulator 11 .

[0161] 2. A one-way valve is arranged inside the oil space formed between the piston lower chamber 1330 and the second accumulator 12 , the oil space of the piston lower chamber 1330 , and the oil space of the second accumulator 12 .

[0162] 3. A one-way valve 1750 is set inside the oil space formed between the upper chamber 1320 of the piston and the first accumulator 11, the oil space of the upper chamber 1320 of the piston, and the oil space of the first accumulator 11; a one-way valve 1750 is set inside the oil space formed between the lower chamber 1330 of the piston and the second accumulator 12, the oil space of the lower chamber 1330 of the piston, and the oil space of the second accumulator 12.

[0163] exist Figures 1 to 6 In the illustrated implementation mode, the setting position of the one-way valve 1750 is the first of the three options mentioned above, and through the position described in the first option, it is easy to think of the positions described in the second and third options, which is obvious. Therefore, the contents of the second and third items are no longer reflected in this embodiment, and the one-way valve 1750 is installed and fixed by the one-way valve retaining ring 1751.

[0164] The one-way valve 1750 can control the rebound speed of the shock absorber. Since different types of vehicles have different requirements for suspension stiffness, the installation direction and number of the one-way valve 1750 can be adjusted. The one-way valve 1750 preliminarily controls the flow of oil and works together with the damper to meet the requirements of different types of vehicles for suspension stiffness. In this embodiment, the cover plate A1440 is provided with a cover plate oil passage A1442, which is arranged inside the piston upper chamber 1320. Its function is that a part of the cover plate oil passage A1442 passes oil, and the other part of the cover plate oil passage A1442 is installed with the one-way valve 1750.

[0165] The one-way valve 1750, as a directional opening and closing element, can control the opening and closing of the channel when the oil flows in different directions. The one-way valve used in the present invention can also be replaced by existing technologies with equivalent functions, such as spring plus steel ball, spring sheet, etc., and the present invention will not give detailed examples.

[0166] In a preferred embodiment, the shock absorber further includes a displacement sensor 18, which includes an electronic compartment 1810, a measuring rod 1820 and a permanent magnet ring 1830; the electronic compartment 1810 is arranged on the upper end cover 1740, the permanent magnet ring 1830 is arranged on the piston head 1310, and the measuring rod 1820 is electrically connected to the electronic compartment 1810; the measuring rod 1820 sequentially passes through the piston upper chamber 1320 and the permanent magnet ring 1830 and then extends into the interior of the piston rod 1350;

[0167] In a preferred embodiment, the shock absorber further comprises an accessory and sealing structure 17, which comprises a lower end cover 1710, a sealing rubber sleeve 1720, a sealing rubber sleeve lower end cover 1730, and an upper end cover 1740. The lower end cover 1710 is arranged at the lower end of the shock absorber, and the upper end cover 1740 is arranged at the upper end of the shock absorber. A sealing oil seal 1711 and a dustproof oil seal 1712 are arranged in the lower end cover 1710; the lower end cover 1710 is connected to the end of the piston cavity wall 1340, the piston rod 1350 passes through the sealing rubber sleeve 1720, one end of the sealing rubber sleeve 1720 is installed on the lower end cover 1710, and the other end is installed on the sealing rubber sleeve lower end cover 1730.

[0168] In a preferred embodiment, the auxiliary and sealing structure 17 includes a first oil inlet and outlet 1780 and a second oil inlet and outlet 1790. The first oil inlet and outlet 1780 is used to fill and discharge oil into the upper chamber 1320 of the piston, and the second oil inlet and outlet 1790 is used to fill and discharge oil into the lower chamber 1330 of the piston.

[0169] In a preferred embodiment, the damper is an electromagnetic switch damper 14, which includes a base A1410, a switch plate A1420 and a cover plate A1440; the cover plate A1440 is fixedly connected to the base A1410, and the switch plate A1420 is arranged between the base A1410 and the cover plate A1440; a moving iron core A1421 is installed on one side of the switch plate A1420 close to the side wall of the base A1410, and a fixed iron core A1430 is installed on the side wall of the base A1410 corresponding to the moving iron core A1421;

[0170] The cover plate A1440 is provided with a cover plate fixing hole A1441 and a cover plate oil passage A1442, and the bottom of the base A1410 is provided with a base fixing hole A1413, and the cover plate fixing hole A1441 and the base fixing hole A1413 are provided correspondingly;

[0171] The switch plate A1420 is provided with an adjustment hole A1422 and an adjustment auxiliary hole A1423, and the adjustment hole A1422 and the adjustment auxiliary hole A1423 are arranged at intervals from each other; the upper and lower surfaces of the switch plate A1420 are both provided with ball grooves A1425 or concave-convex grooves, and the switch plate A1420 is slidably connected with the base A1410 and the cover plate A1440 through the balls A1426 in the ball grooves A1425 or the concave-convex grooves;

[0172] The surface where the base A1410 contacts the switch plate A1420 is provided with a gear limit bead A1412, the lower part of the gear limit bead A1412 is provided with a gear limit spring A1411, and the contact surface between the switch plate A1420 and the gear limit bead A1412 is provided with a gear limit pit A1424 according to the gear position.

[0173] Description of the electromagnetic switch damper hole:

[0174] The cover plate fixing channel A is arranged correspondingly to the base fixing channel A, and the adjustment channel A and the adjustment auxiliary channel A of the switch plate A are arranged at intervals. This design enables a single switch plate A to have two gears, namely:

[0175] 1. When the fixed iron core A is energized to generate a magnetic field and is attracted to the moving iron core A of the switch plate A, the adjustment channel A, the cover plate fixing channel A, and the base fixing channel A coincide with each other. At this time, the oil flow area in this area is the largest and the damping force is the smallest.

[0176] 2. When the fixed iron core A is energized to generate a magnetic field that repels the moving iron core A of the switch plate A, the auxiliary channel A, the cover plate fixed channel A, and the base fixed channel A are adjusted to coincide with each other. At this time, the oil flow area in this area is the smallest and the damping force is the largest.

[0177] The electromagnetic switch damper composed of multiple switch plates A can achieve multiple gear adjustments such as soft, medium and hard. At the same time, the setting of the auxiliary channel A is adjusted to ensure the minimum oil flow area when the damper is adjusted to the maximum damping force or when it is misoperated, ensuring the normal use of the shock absorber. The auxiliary channel A can be optimized according to different design parameters, leaving optional means for subsequent parameter design.

[0178] Description of the electromagnetic switch damper gear limit:

[0179] There are three ways to set the gear limit measures:

[0180] 1. Set at the contact surface between the switch plate A and the base A;

[0181] 2. Set at the contact surface between the switch plate A and the cover plate A;

[0182] 3. Set on the outer side of the switch plate.

[0183] exist Figures 1 to 6 In the illustrated implementation mode, the gear limit is set in the first of the three options above. Through the position described in the first option, it is easy to think of the positions described in the second and third options. It is obvious, so the contents of the second and third options are no longer reflected in this embodiment.

[0184] Description of the fixed iron core and the moving iron core:

[0185] The fixed iron core in this embodiment has a coil wound around its outer layer. When the coil is energized, the fixed iron core generates magnetic force, causing the moving iron core to move. This is common knowledge and will not be elaborated in the present invention.

[0186] Instructions for use of the damper:

[0187] The use of the damper is not limited to the electromagnetic switch damper in this embodiment, and other conventional dampers that conform to this embodiment may also be used.

[0188] Specific implementation method 2: Combination Figures 7 to 9 This embodiment is described. In this embodiment, Figure 7 is the change diagram of the position of the second energy storage device, Figure 8 is a graph showing the change in the positions of both the first and second energy storage devices. Fig. 9 This is a diagram showing the changes in the structural form of the first energy storage device.

[0189] Other components and connection relationships are the same as those in the first specific implementation mode.

[0190] Specific implementation method three: Combination Fig.10To illustrate this embodiment, in this embodiment, the position change of the displacement sensor is reflected: the displacement sensor 18 includes an electronic compartment 1810, a measuring rod 1820 and a permanent magnet ring 1830; the electronic compartment 1810 is fixedly connected to the fixed end 1351 of the piston rod, and the permanent magnet ring 1830 is arranged on the lower end cover 1710; the measuring rod 1820 is electrically connected to the electronic compartment 1810; the measuring rod 1820 passes through the permanent magnet ring 1830 and moves synchronously with the piston rod.

[0191] Other components and connection relationships are the same as those in the first specific implementation mode.

[0192] Specific implementation method four: Combination Figure 11 to Figure 12 This embodiment is described. In this embodiment, the oil-through partition embodiment is embodied:

[0193] The first accumulator 11 is arranged at the end of the piston cavity wall 1340, and the first accumulator 11 includes a first accumulator chamber 1110 and a first deformable gas storage chamber 1120; the first deformable gas storage chamber 1120 is arranged inside the first accumulator chamber 1110, and the first accumulator chamber 1110 is a chamber surrounded by a first accumulator outer wall 1130, a first accumulator inner wall 1140, a first accumulator upper wall 1150 and a first accumulator lower wall 1160.

[0194] A first accumulator oil-through partition 1170 is disposed inside the first accumulator chamber 1110 , and the first accumulator oil-through partition 1170 is provided with a plurality of first accumulator oil-through holes 1171 .

[0195] The second accumulator 12 is arranged at the end of the piston cavity wall 1340, and the second accumulator 12 includes a second accumulator chamber 1210 and a second deformable gas storage chamber 1220; the second deformable gas storage chamber 1220 is arranged inside the second accumulator chamber 1210, and the second accumulator chamber 1210 is a chamber surrounded by a second accumulator outer wall 1230, a second accumulator inner wall 1240, a second accumulator upper wall 1250 and a second accumulator lower wall 1260.

[0196] A second accumulator oil partition 1270 is disposed inside the second accumulator chamber 1210 , and a plurality of second accumulator oil holes 1271 are disposed on the second accumulator oil partition 1270 .

[0197] Other components and connection relationships are the same as those in the first specific implementation mode.

[0198] Specific implementation method five: Combination Fig.13To illustrate this embodiment, in this embodiment, a shock absorber with oil isolation is embodied, and the position of its displacement sensor changes: the displacement sensor 18 includes an electronic compartment 1810, a measuring rod 1820 and a permanent magnet ring 1830; the electronic compartment 1810 is fixedly connected to the fixed end 1351 of the piston rod, and the permanent magnet ring 1830 is arranged on the lower end cover 1710; the measuring rod 1820 is electrically connected to the electronic compartment 1810; the measuring rod 1820 passes through the permanent magnet ring 1830 and moves synchronously with the piston rod.

[0199] Other components and connection relationships are the same as those of the fourth specific implementation method.

[0200] Specific implementation method six: Combination Figures 14 to 17 This embodiment is described. In this embodiment, an embodiment in which an oil passage tank and an oil passage partition are used in combination is embodied.

[0201] The other components and connection relationships are the same as those of the first and fourth embodiments.

[0202] Specific implementation method seven: Combination Figure 18 to Figure 19 The present embodiment is described. The present embodiment is a gas-liquid composite shock absorber, wherein the damper is an adjustable plate damper 19, and the adjustable plate damper B19 comprises a fixed plate B1910, an adjustable plate B1920, a cover plate B1930 and a rotating mechanism B1940; the adjustable plate B1920 is rotatably connected between the fixed plate B1910 and the cover plate B1930, the cover plate B1930 and the fixed plate B1910 are fixedly connected, the rotating mechanism B1940 comprises a transmission rod B1941, one end of the transmission rod B1941 is fixedly connected to the rotating mechanism B1940, and the other end is fixedly connected to the adjusting plate B1920, and the rotating mechanism B1940 drives the adjusting plate B1920 to rotate through the transmission rod B1941;

[0203] The fixed plate B1910 is divided into a plurality of sector-shaped areas, which are the same as the sector-shaped areas divided by the cover plate and the adjustment plate; the fixed plate B1910 is provided with a fixed plate fixing channel B1911, a fixed plate auxiliary channel B1912 and a fixed plate oil passage B1913 according to the sector-shaped areas;

[0204] The cover plate 1930 is provided with a cover plate fixing hole B1931 and a cover plate auxiliary hole B1932 according to the sector-shaped area. In the same sector-shaped area, the cover plate fixing hole B1931 is arranged corresponding to the fixing plate fixing hole B1911, and the cover plate auxiliary hole B1932 is arranged corresponding to the fixing plate auxiliary hole B1912;

[0205] The adjusting plate B1920 is provided with adjusting channels B1921 and adjusting auxiliary channels B1922 according to the sector-shaped area. In the same sector-shaped area, the adjusting channel B1921 is provided corresponding to the fixing channel B1911 of the fixing plate, and the adjusting auxiliary channel B1922 is provided corresponding to the fixing channel B1912 of the fixing plate; the upper and lower surfaces of the adjusting plate B1920 are provided with ball grooves B1923 or concave-convex grooves, and the adjusting plate B1920 is slidably connected with the fixing plate B1910 and the cover plate B1930 through the balls B1924 in the ball grooves B1923 or the concave-convex grooves;

[0206] The surface where the fixed plate B1910 or the cover plate B1930 contacts the adjusting plate B1920 is provided with a gear limit bead B1915, and the lower part of the gear limit bead B1915 is provided with a gear limit spring B1914; the contact surface between the adjusting plate B1920 and the gear limit bead B1915 is provided with a gear limit pit B1925 according to the gear position;

[0207] The adjusting plate damper 19 also includes a total limiter B1950, which includes a total limit block B1951 and a total limit groove B1952; the total limit block B1951 is arranged on the adjusting plate B1920 in contact with the cover plate B1930; the total limit groove B1952 is arranged on the cover plate B1930 in contact with the adjusting plate B1920, and the total limit block B1951 is slidably connected to the total limit groove B1952.

[0208] Other components and connection relationships are the same as those in the first specific implementation mode.

[0209] Description of rotating mechanism B:

[0210] The rotating mechanism B may adopt existing technologies such as motor rotation adjustment, manual rotation adjustment, hydraulic rotation adjustment, etc., and this embodiment does not make any specific limitation.

[0211] Instructions for adjusting the plate damper hole:

[0212] Combination Fig.18 As shown, the cover plate B, the fixed plate B, and the adjustment plate B are divided into four fan-shaped areas. The cover plate B in each area is set corresponding to the fixed channel and auxiliary channel of the fixed plate B. The fixed channel is 3 columns with a total of 9 circular channels, and the auxiliary channel is 2 columns with a total of 4 square channels. The adjustment channel B of the adjustment plate B in each area is 3 columns with a total of 9 circular channels, and the adjustment auxiliary channel B is 2 columns with a total of 4 square channels. This design enables the adjustment plate damper to achieve three-speed adjustment. In the 1st gear, a total of 36 circular channels and 16 square channels are passed through oil; in the 2nd gear, a total of 28 circular channels and 24 square channels are passed through oil; in the 3rd gear, a total of 20 circular channels and 32 square channels are passed through oil, thereby achieving three-speed adjustment of soft, medium and hard. Multi-speed adjustment can also be set according to needs.

[0213] This hole design can increase the oil passage area of ​​each gear as a whole, increasing the comfort of each gear of the vehicle; it can increase the oil passage area of ​​the middle and low gears, reduce the difference with the oil passage area of ​​the high gear, and achieve fine adjustment of the vehicle comfort; according to the use functions of different vehicles, the auxiliary oil passage hole can be set as needed, reflecting the variability and applicability of the damper;

[0214] Instructions for adjusting the plate damper gear limit:

[0215] There are three ways to set the gear limit measures:

[0216] 1. Set at the contact surface between the adjustment plate B and the fixed plate B.

[0217] 2. Set at the contact surface between the adjustment plate B and the cover plate B.

[0218] 3. Set on the outer side of the adjustment plate.

[0219] exist Figure 18 to Figure 19 In the illustrated implementation mode, the gear limit is set in the first of the three options above. Through the position described in the first option, it is easy to think of the positions described in the second and third options. It is obvious, so the contents of the second and third options are no longer reflected in this embodiment.

[0220] Instructions for use of the damper:

[0221] The use of the damper is not limited to the adjustable plate damper in the present embodiment, and other dampers of the prior art that conform to the present embodiment may also be used.

[0222] Specific implementation method eight: Combination Figure 20 to Figure 21 The present embodiment is described. The present embodiment is a gas-liquid composite shock absorber. The damper is an adjustable cylinder damper 20. The adjustable cylinder damper 20 includes an adjustable cylinder C2010, a fixed cylinder C2020 and a rotating mechanism C2030. The rotating mechanism C2030 includes a transmission rod C2031. One end of the transmission rod C2031 is fixedly connected to the rotating mechanism C2030, and the other end is fixedly connected to the adjusting cylinder C2010. The rotating mechanism C2030 drives the adjusting cylinder C2010 to rotate through the transmission rod C2031.

[0223] The fixed cylinder C2020 is divided into a plurality of sector-shaped areas, which are the same as the sector-shaped areas divided by the adjustment cylinder C2010; the fixed cylinder C2020 is provided with a fixed cylinder fixed channel C2021 and a fixed cylinder auxiliary channel C2022 according to the sector-shaped areas;

[0224] The adjusting cylinder C2010 is provided with adjusting channels C2011 and adjusting auxiliary channels C2012 according to the sector-shaped areas. In the same sector-shaped area, the adjusting channels C2011 are arranged correspondingly to the fixed channels C2021 of the fixed cylinder, and the adjusting auxiliary channels C2012 are arranged correspondingly to the auxiliary channels C2022 of the fixed cylinder. The adjusting cylinder C2010 is rotatably connected to the fixed cylinder C2020 through the upper bearing C2013 of the adjusting cylinder and the lower bearing C2014 of the adjusting cylinder.

[0225] The adjustment cylinder damper 20 also includes a fixed cylinder cover plate C2040; the surface of the fixed cylinder cover plate C2040 in contact with the adjustment plate C2010 is provided with a gear limit bead C2042, and the lower part of the gear limit bead C2042 is provided with a gear limit spring C2041; the contact surface between the adjustment cylinder C2010 and the gear limit bead C2042 is provided with a gear limit pit C2015 according to the gear position;

[0226] The adjusting cylinder damper 20 also includes a total limiter C2050, which includes a total limit block C2051 and a total limit groove C2052; the total limit block C2051 is arranged on the adjusting cylinder C2010 in contact with the fixed cylinder cover plate C2040; the total limit groove C2052 is arranged on the fixed cylinder cover plate C2040 in contact with the adjusting cylinder 2010, and the total limit block C2051 is slidably connected to the total limit groove.

[0227] Other components and connection relationships are the same as those in the first specific implementation mode.

[0228] Description of the rotating mechanism C:

[0229] The rotating mechanism C may adopt existing technologies such as motor rotation adjustment, manual rotation adjustment, hydraulic rotation adjustment, etc., and this embodiment does not make any specific limitation.

[0230] Instructions for adjusting the holes of the cartridge damper:

[0231] Combination Fig. 20 As shown, the fixed cylinder C and the adjustment cylinder C are divided into four fan-shaped areas. The fixed cylinder fixed channel C in each area is 3 rows with 15 circular channels in total, and the auxiliary channel C of the fixed cylinder is 2 rows with 6 square channels in total. The adjustment channel C of the adjustment cylinder C in each area is 3 rows with 15 circular channels in total, and the auxiliary adjustment channel C is 2 rows with 6 square channels in total. This design enables the adjustment cylinder damper to achieve three-speed adjustment. In the 1st gear, a total of 60 circular channels and 24 square channels are oil-free; in the 2nd gear, a total of 40 circular channels and 36 square channels are oil-free; in the 3rd gear, a total of 20 circular channels and 48 square channels are oil-free, thereby achieving three-speed adjustment of soft, medium and hard. Multi-speed adjustment can also be set according to needs.

[0232] This hole design can increase the oil passage area of ​​each gear as a whole, thereby increasing the comfort of each gear of the vehicle; it can increase the oil passage area of ​​the middle and low gears, reduce the gap with the oil passage area of ​​the high gear, and achieve fine adjustment of the vehicle comfort; it increases the uniformity of oil passage, so that oil passes through all areas of the adjustment cylinder, preventing uneven deformation or impact of the deformable air storage chamber due to uneven oil passage, and increasing the service life of the deformable air storage chamber; according to the use functions of different vehicles, the auxiliary oil passage hole can be set as needed, reflecting the variability and applicability of the damper;

[0233] Instructions for use of the damper:

[0234] The use of the damper is not limited to the adjustable cylinder damper in the present embodiment, and other dampers of the prior art that conform to the present embodiment may also be used.

[0235] Working principle of the present invention:

[0236] There are two ways to adjust the length of the gas-liquid composite shock absorber of the present invention: first, by charging and discharging the air hole, the expansion degree of the deformable gas storage chamber is adjusted; second, by the oil inlet and outlet, the volume of the oil in the energy storage chamber and the oil cavity is adjusted. When the length is adjusted in the two ways separately or simultaneously, active control of the vehicle body posture can be achieved.

[0237] When the shock absorber suspension system is needed to lower the vehicle body height: the second deformable air storage chamber 1220 is inflated, the second oil inlet and outlet 1790 is filled with oil, the pressure in the piston lower chamber 1330 increases, and the piston rod 1350 moves upward, thereby achieving the purpose of lowering the vehicle body height.

[0238] When the shock absorber suspension system is needed to raise the vehicle height: the first deformable air storage chamber 1120 is inflated, the first oil inlet and outlet 1780 is filled with oil, the pressure in the piston upper chamber 1320 increases, and the piston rod 1350 moves downward, thereby achieving the purpose of raising the vehicle height.

[0239] When the damper of the present invention is an electromagnetic switch damper, its working principle is: the fixed iron core A1430 is energized, the fixed iron core A1430 generates a magnetic field, attracting or repelling the moving iron core A1421 on the switch plate A1420, and adjusting the position of the switch plate A1420 to adjust the oil flow area of ​​the oil, thereby achieving the adjustment of the damping force of the shock absorber.

[0240] When the damper of the present invention is an adjustable plate damper or an adjustable cylinder damper, its working principle is: the adjusting plate B1920 or the adjusting cylinder C2010 is driven to rotate according to the gear position through the rotating mechanism, thereby adjusting the oil flow area, and then realizing the adjustment of the damping force of the shock absorber.

[0241] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A gas-liquid composite shock absorber, characterized in that: The shock absorber comprises a damper, a first energy accumulator (11), a second energy accumulator (12) and a piston body (13); A piston rod (1350) is disposed inside the piston cavity wall (1340) of the piston body (13), and the interior of the piston cavity wall (1340) is a piston cavity, which is divided into an upper piston chamber (1320) and a lower piston chamber (1330) by a piston head (1310) at one end of the piston rod (1350); The piston upper chamber (1320) is in communication with the first energy accumulator (11), and the piston lower chamber (1330) is in communication with the second energy accumulator (12); A damper is arranged inside the oil space formed between the piston upper chamber (1320) and the first accumulator (11), the oil space of the piston upper chamber (1320), and the oil space of the first accumulator (11), so that the oil flows through the damper; Or a damper is arranged inside the oil space formed between the piston lower chamber (1330) and the second accumulator (12), the oil space of the piston lower chamber (1330), and the oil space of the second accumulator (12), so that the oil flows through the damper; Or a damper is arranged inside the oil space formed between the piston upper chamber (1320) and the first accumulator (11), the oil space of the piston upper chamber (1320), and the oil space of the first accumulator (11), so that the oil flows through the damper; a damper is arranged inside the oil space formed between the piston lower chamber (1330) and the second accumulator (12), the oil space of the piston lower chamber (1330), and the oil space of the second accumulator (12), so that the oil flows through the damper; The first energy accumulator (11) is arranged at the end of the piston cavity wall (1340), and the second energy accumulator (12) is arranged at the end of the piston cavity wall (1340).

2. The gas-liquid composite shock absorber according to claim 1, characterized in that: The first energy storage device (11) comprises a first energy storage device chamber (1110) and a first deformable gas storage chamber (1120); The first deformable gas storage chamber (1120) is arranged inside the first energy accumulator chamber (1110), and the first energy accumulator chamber (1110) is a chamber surrounded by a first energy accumulator outer wall (1130), a first energy accumulator inner wall (1140), a first energy accumulator upper wall (1150) and a first energy accumulator lower wall (1160).

3. The gas-liquid composite shock absorber according to claim 2, characterized in that: A plurality of first energy accumulator oil grooves (1141) are evenly arranged on the circumference of one side of the first energy accumulator outer wall (1130) or the first energy accumulator inner wall (1140) close to the first deformable gas storage chamber (1120), and a plurality of first energy accumulator oil passages (1151) are evenly arranged on the circumference of the first energy accumulator upper wall (1150), and the first energy accumulator oil passages (1151) are connected to the corresponding first energy accumulator oil grooves (1141); Or a first energy accumulator oil barrier (1170) is provided inside the first energy accumulator chamber (1110), and the first energy accumulator oil barrier (1170) is provided with a plurality of first energy accumulator oil holes (1171); Alternatively, a first energy accumulator oil passage groove (1141) and a first energy accumulator oil passage partition (1170) are simultaneously provided inside the first energy accumulator chamber (1110).

4. The gas-liquid composite shock absorber according to claim 1, characterized in that: The second energy storage device (12) comprises a second energy storage device chamber (1210) and a second deformable gas storage chamber (1220); The second deformable gas storage chamber (1220) is arranged inside the second energy accumulator chamber (1210), and the second energy accumulator chamber (1210) is a chamber surrounded by a second energy accumulator outer wall (1230), a second energy accumulator inner wall (1240), a second energy accumulator upper wall (1250) and a second energy accumulator lower wall (1260).

5. The gas-liquid composite shock absorber according to claim 4 is characterized in that: A plurality of second energy accumulator oil grooves (1241) are evenly arranged on the circumference of one side of the second energy accumulator outer wall (1230) or the second energy accumulator inner wall (1240) close to the second deformable gas storage chamber (1220), and a plurality of second energy accumulator oil passages (1261) are evenly arranged on the circumference of the second energy accumulator lower wall (1260), and the second energy accumulator oil passages (1261) are connected to the corresponding second energy accumulator oil grooves (1241); Or a second energy accumulator oil partition (1270) is provided inside the second energy accumulator chamber (1210), and a plurality of second energy accumulator oil holes (1271) are provided on the second energy accumulator oil partition (1270); Alternatively, a second energy accumulator oil passage groove (1241) and a second energy accumulator oil passage partition (1270) are simultaneously provided inside the second energy accumulator chamber (1210).

6. The gas-liquid composite shock absorber according to claim 1, characterized in that: One end of the piston rod (1350) located inside the piston cavity is connected to a piston head (1310), and the other end extending out of the piston cavity is provided with a fixed end (1351), and a piston ring (1311) is installed on the piston head (1310); The oil space formed between the piston upper chamber (1320) and the first accumulator (11) is an upper oil chamber (15), and the upper oil chamber (15) is connected to the piston upper chamber (1320) through the first oil hole (1760); or the piston upper chamber (1320) and the first accumulator (11) are directly connected through the first oil hole (1760); The oil space formed between the piston lower chamber (1330) and the second accumulator (12) is a lower oil chamber (16), and the lower oil chamber (16) is connected to the piston lower chamber (1330) through the second oil hole (1770); or the piston lower chamber (1330) and the second accumulator (12) are directly connected through the second oil hole (1770); A one-way valve (1750) is arranged inside the oil space formed between the piston upper chamber (1320) and the first accumulator (11), the oil space of the piston upper chamber (1320), and the oil space of the first accumulator (11); Or a one-way valve (1750) is arranged inside the oil space formed between the piston lower chamber (1330) and the second accumulator (12), the oil space of the piston lower chamber (1330), and the oil space of the second accumulator (12); Or a one-way valve (1750) is arranged inside the oil space formed between the piston upper chamber (1320) and the first accumulator (11), the oil space of the piston upper chamber (1320), and the oil space of the first accumulator (11); a one-way valve (1750) is arranged inside the oil space formed between the piston lower chamber (1330) and the second accumulator (12), the oil space of the piston lower chamber (1330), and the oil space of the second accumulator (12).

7. The gas-liquid composite shock absorber according to claim 1, characterized in that: The shock absorber further comprises a displacement sensor (18), wherein the displacement sensor (18) comprises an electronic compartment (1810), a measuring rod (1820) and a permanent magnetic ring (1830); The electronic chamber (1810) is arranged on the upper end cover (1740), the permanent magnetic ring (1830) is arranged on the piston head (1310), and the measuring rod (1820) is electrically connected to the electronic chamber (1810); the measuring rod (1820) sequentially passes through the piston upper chamber (1320) and the permanent magnetic ring (1830) and then extends into the interior of the piston rod (1350); Alternatively, the shock absorber further comprises a displacement sensor (18), wherein the displacement sensor (18) comprises an electronic compartment (1810), a measuring rod (1820) and a permanent magnetic ring (1830); The electronic chamber (1810) is fixedly connected to the fixed end (1351) of the piston rod (1350), and the permanent magnet ring (1830) is arranged on the lower end cover (1710); the measuring rod (1820) is electrically connected to the electronic chamber (1810); the measuring rod (1820) passes through the permanent magnet ring (1830) and moves synchronously with the piston rod (1350).

8. The gas-liquid composite shock absorber according to any one of claims 1 to 7, characterized in that: The damper is an electromagnetic switch type damper (14), which comprises a base A (1410), a switch plate A (1420) and a cover plate A (1440); the cover plate A (1440) is fixedly connected to the base A (1410), and the switch plate A (1420) is arranged between the base A (1410) and the cover plate A (1440); a moving iron core A (1421) is installed on one side of the switch plate A (1420) close to the side wall of the base A (1410), and a fixed iron core A (1430) is installed at a position corresponding to the moving iron core A (1421) on the side wall of the base A (1410); The cover plate A (1440) is provided with a cover plate fixing hole A (1441) and a cover plate oil passage A (1442); the bottom of the base A (1410) is provided with a base fixing hole A (1413) and a base oil passage A (1414); the cover plate fixing hole A (1441) and the base fixing hole A (1413) are provided correspondingly; the cover plate oil passage A (1442) and the base oil passage A (1414) constitute the damper oil passage. The switch plate A (1420) is provided with an adjustment hole A (1422) and an adjustment auxiliary hole A (1423), and the adjustment hole A (1422) and the adjustment auxiliary hole A (1423) are arranged at intervals from each other; The upper and lower surfaces of the switch plate A (1420) are both provided with ball grooves A (1425) or concave-convex grooves, and the switch plate A (1420) is slidably connected with the base A (1410) and the cover plate A (1440) through the balls A (1426) in the ball grooves A (1425) or the concave-convex grooves; The surface where the base A (1410) or the cover plate A (1440) contacts the switch plate A (1420) is provided with a gear position limiting bead A (1412), the lower part of the gear position limiting bead A (1412) is provided with a gear position limiting spring A (1411), and the contact surface between the switch plate A (1420) and the gear position limiting bead A (1412) is provided with a gear position limiting pit A (1424) according to the gear position.

9. The gas-liquid composite shock absorber according to any one of claims 1 to 7, characterized in that: The damper is an adjustable plate damper B (19), which comprises a fixed plate B (1910), an adjustable plate B (1920), a cover plate B (1930) and a rotating mechanism B (1940); the adjustable plate B (1920) is rotatably connected between the fixed plate B (1910) and the cover plate B (1930), the cover plate B (1930) and the fixed plate B (1910) are fixedly connected, the rotating mechanism B (1940) comprises a transmission rod B (1941), one end of the transmission rod B (1941) is fixedly connected to the rotating mechanism B (1940), and the other end is fixedly connected to the adjustable plate B (1920), and the rotating mechanism B (1940) drives the adjustable plate B (1920) to rotate through the transmission rod B (1941); The fixed plate B (1910) is divided into a plurality of sector-shaped areas, which are the same as the sector-shaped areas divided by the cover plate B and the adjustment plate B; The fixed plate B (1910) is provided with a fixed plate fixing channel B (1911), a fixed plate auxiliary channel B (1912) and a fixed plate oil passage B (1913) according to a sector-shaped area; The cover plate B (1930) is provided with a cover plate fixing channel B (1931) and a cover plate auxiliary channel B (1932) according to the sector-shaped area. In the same sector-shaped area, the cover plate fixing channel B (1931) is arranged corresponding to the fixing plate fixing channel B (1911), and the cover plate auxiliary channel B (1932) is arranged corresponding to the fixing plate auxiliary channel B (1912); The adjusting plate B (1920) is provided with adjusting channels B (1921) and adjusting auxiliary channels B (1922) according to the sector-shaped areas. In the same sector-shaped area, the adjusting channels B (1921) are arranged corresponding to the fixing channels B (1911) of the fixing plate, and the adjusting auxiliary channels B (1922) are arranged corresponding to the fixing channels B (1912) of the fixing plate. The upper and lower surfaces of the adjustment plate B (1920) are both provided with ball grooves B (1923) or concave-convex grooves, and the adjustment plate B (1920) is slidably connected with the fixed plate B (1910) and the cover plate B (1930) through the balls B (1924) in the ball grooves B (1923) or the concave-convex grooves; The surface where the fixed plate B (1910) or the cover plate B (1930) contacts the adjusting plate B (1920) is provided with a gear position limiting bead B (1915), and the lower part of the gear position limiting bead B (1915) is provided with a gear position limiting spring spring B (1914); the contact surface between the adjusting plate B (1920) and the gear position limiting bead B (1915) is provided with a gear position limiting pit B (1925) according to the gear position; The adjusting plate damper B (19) further comprises a total stopper B (1950), wherein the total stopper B (1950) comprises a total stopper block B (1951) and a total stopper groove B (1952); the total stopper block B (1951) is arranged on the adjusting plate B (1920) in contact with the cover plate B (1930); the total stopper groove B (1952) is arranged on the cover plate B (1930) in contact with the adjusting plate B (1920), and the total stopper block B (1951) is slidably connected to the total stopper groove B (1952).

10. The gas-liquid composite shock absorber according to any one of claims 1 to 7, characterized in that: The damper is an adjustable cylinder damper (20), which comprises an adjustable cylinder C (2010), a fixed cylinder C (2020) and a rotating mechanism C (2030); the rotating mechanism C (2030) comprises a transmission rod C (2031), one end of the transmission rod C (2031) is fixedly connected to the rotating mechanism C (2030), and the other end of the transmission rod C (2031) is fixedly connected to the adjusting cylinder C (2010); the rotating mechanism C (2030) drives the adjusting cylinder C (2010) to rotate via the transmission rod C (2031); The fixed cylinder C (2020) is divided into a plurality of sector-shaped areas, which are the same as the sector-shaped areas divided by the adjustment cylinder C (2010); The fixed cylinder C (2020) is provided with a fixed cylinder fixed channel C (2021) and a fixed cylinder auxiliary channel C (2022) according to a sector-shaped area; The adjusting tube C (2010) is provided with an adjusting hole C (2011) and an adjusting auxiliary hole C (2012) according to the sector-shaped area. In the same sector-shaped area, the adjusting hole C (2011) is arranged correspondingly to the fixed hole C (221) of the fixing tube, and the adjusting auxiliary hole C (2012) is arranged correspondingly to the auxiliary hole C (222) of the fixing tube. The adjusting cylinder C (2010) is rotatably connected to the fixing cylinder C (2020) via an adjusting cylinder upper bearing C (2013) and an adjusting cylinder lower bearing C (2014); The adjustable cylinder damper (20) further comprises a fixed cylinder cover plate C (2040); a gear position limiting bead C (2042) is arranged on the surface of the fixed cylinder cover plate C (2040) in contact with the adjusting plate C (2010); a gear position limiting spring C (2041) is arranged at the lower part of the gear position limiting bead C (2042); a gear position limiting pit C (2015) is arranged on the contact surface between the adjusting cylinder C (2010) and the gear position limiting bead C (2042) according to the gear position; The adjustable cylinder damper (20) further comprises a total stopper C (2050), the total stopper C (2050) comprising a total stopper block C (2051) and a total stopper groove C (2052); the total stopper block C (2051) is arranged on the adjustable cylinder C (2010) in contact with the fixed cylinder cover plate C (2040); the total stopper groove C (2052) is arranged on the fixed cylinder cover plate C (2040) in contact with the adjustable cylinder C (2010), and the total stopper block C (2051) is slidably connected to the total stopper groove C (2052).

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