Adjustable damping shock absorber

Abstract

The invention relates to the technical field of automobile shock absorbers, and particularly discloses an adjustable damping shock absorber which comprises a liquid storage barrel and a working cylinder installed in the liquid storage barrel, shock absorber oil is arranged in the liquid storage barrel, a piston rod is vertically and slidably connected into the working cylinder, and a first piston is arranged at the bottom of the piston rod; a recovery cavity is formed between the first piston and the working cylinder, and the recovery cavity is communicated with the liquid storage barrel through an upper cavity hole; a connecting plate is fixed in the liquid storage cylinder, a compression cavity is formed between the first piston and the connecting plate, and an energy storage cavity used for storing an energy storage device is formed in the bottom of the connecting plate and the bottom of the liquid storage cylinder; and a power mechanism is arranged on the outer side of the liquid storage cylinder. When the shock absorber is used, shock absorber oil in the liquid storage cylinder is driven to flow into (or flow out) the recovery cavity from the compression cavity and the energy storage cavity through the upper cavity hole, so that the pressure in the recovery cavity is increased (reduced), wheel lifting (wheel descending) operation can be actively achieved, the comfort of a vehicle is improved, and the practicability of the shock absorber is improved.

Description

Technical Field

[0001] The invention relates to the technical field of automobile shock absorbers, in particular to an adjustable damping shock absorber. Background Art

[0002] The automobile suspension system refers to the entire support system composed of springs and shock absorbers between the car body and the tires. The function of the suspension system is to support the car body and improve the riding experience. Different suspension settings will give the driver different driving experiences. The seemingly simple suspension system integrates multiple forces and determines the stability, comfort and safety of the car.

[0003] The suspension system refers to the entire support system composed of springs and shock absorbers between the car body and the tires. The function of the suspension system is to support the car body and improve the riding feeling. Different suspension settings will give the driver different driving experience. The seemingly simple suspension system integrates multiple forces to determine the stability, comfort and safety of the car. It is one of the most critical components of modern cars. The structural feature of the non-independent suspension is that the wheels on both sides are connected by an integral axle, and the wheels and the axle are suspended under the frame or body through elastic suspension. The non-independent suspension has the advantages of simple structure, low cost, high strength, easy maintenance, and small changes in the front wheel positioning during driving. However, due to its poor comfort and handling stability, it is basically no longer used in modern cars and is mostly used in trucks and buses.

[0004] In the prior art, there is a Chinese patent with application number 201921060032.5, authorization announcement number CN210565968U, and name of an adjustable damping shock absorber. The above patent discloses an adjustable damping shock absorber; it includes a hollow piston rod, a core rod, a throttling core shaft, a secondary piston, a secondary compression valve plate, a secondary circulation valve plate, a gasket, and a compression valve plate, and the outer diameter of the secondary piston is smaller than the piston; the secondary piston is arranged between the piston and the guide seat; the secondary piston, the secondary circulation valve plate, and the piston are fastened to the hollow piston rod; the core rod and the throttling core shaft are interference fit, and the core rod and the throttling core shaft can rotate in the hollow piston rod; the secondary piston and the piston reciprocate together in the working cylinder; the end of the hollow piston rod has symmetrical circulation holes; one pair of circulation holes is connected to the inner cavity of the piston; two pairs of circulation holes are connected to the inner cavity of the secondary piston; the secondary piston has a straight hole connected to the inner cavity.

[0005] The stepper motor in the above patent is connected to the core rod at the end. The stepper motor rotates at different angles to drive the core rod to rotate. When the core rod rotates, the oil flow has three states: fully connected, partially connected and fully closed, which produces different damping force values ​​to achieve the adjustment of the shock absorber damping. However, the shock absorber in the prior art cannot automatically adjust the height of the wheel according to the road conditions so that the vehicle can pass through the road in a more stable posture and improve the comfort of the vehicle, which has certain shortcomings. Summary of the invention

[0006] The object of the present invention is to provide an adjustable damping shock absorber to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an adjustable damping shock absorber, comprising a liquid storage cylinder and a working cylinder installed inside the liquid storage cylinder, shock absorber oil is arranged in the liquid storage cylinder, a piston rod is vertically slidably connected inside the working cylinder, and a first piston is arranged at the bottom of the piston rod; a recovery chamber is formed between the first piston and the working cylinder, and the recovery chamber is connected to the liquid storage cylinder through an upper chamber hole; a connecting plate is fixed inside the liquid storage cylinder, a compression chamber is formed between the first piston and the connecting plate, and an energy storage chamber for storing an energy accumulator is arranged between the connecting plate and the bottom of the liquid storage cylinder; a power mechanism is arranged on the outside of the liquid storage cylinder, and the power mechanism drives the shock absorber oil in the liquid storage cylinder to flow inside the compression chamber, the energy storage chamber and the recovery chamber to realize the active up and down movement of the wheel.

[0008] Furthermore, the liquid storage cylinder is provided with a compression solenoid valve transition sleeve and a recovery solenoid valve transition sleeve, a compression CDC solenoid valve is arranged inside the compression solenoid valve transition sleeve, a recovery CDC solenoid valve is installed inside the recovery solenoid valve transition sleeve, and the recovery CDC solenoid valve is connected to the liquid storage cylinder through the seventh oil hole and the tenth oil hole.

[0009] Furthermore, a restoring transition cylinder and a compression transition cylinder are respectively provided at the upper and lower ends of the outer side of the working cylinder. The restoring transition cylinder and the compression transition cylinder are respectively floated on the outer side of the working cylinder through an O-ring interference fit, and form a first annular cavity and a second annular cavity. The first annular cavity is connected to the compression cavity through a ninth oil hole.

[0010] Furthermore, the compression chamber is connected to the first annular chamber through a first oil hole, a first annular channel and a second annular channel are provided on the compression solenoid valve transition sleeve, a third annular channel and a fourth annular channel are provided on the recovery solenoid valve transition sleeve, and the first annular chamber is connected to the second annular channel.

[0011] Furthermore, a sixth oil hole is provided on the liquid storage cylinder, and a fifth oil hole is provided between the second annular channel and the energy storage chamber; the shock absorber inside the energy storage chamber passes through the sixth oil hole and the fifth oil hole in sequence and then enters the second annular channel, and a first one-way valve is provided between the fifth oil hole and the second annular channel.

[0012] Furthermore, the power mechanism includes an external gear pump, a first pump valve block is arranged inside the outer valve sleeve of the first solenoid valve, and a first gear pump port is arranged on the first pump valve block; a second pump valve block is arranged inside the outer valve sleeve of the second solenoid valve, and a second gear pump port is arranged on the second pump valve block; the gear pump is connected with the compression solenoid valve transition sleeve through the first gear pump port, and the gear pump is connected with the restoration solenoid valve transition sleeve through the second gear pump port, and a third annular channel is arranged between the second gear pump and the second annular cavity, and the second annular cavity is connected with the restoration cavity through the upper cavity hole.

[0013] Furthermore, the energy storage chamber and the third annular channel are communicated with each other through an eighth oil hole, and a second one-way valve is arranged at the position of the eighth oil hole.

[0014] Furthermore, a first oil hole is provided between the first annular cavity and the compression cavity, and the shock absorber oil enters the compression cavity through the first annular cavity and the first oil hole.

[0015] Furthermore, the first annular cavity and the first annular channel are connected through the third oil hole, and the first annular channel and the third annular cavity are connected through the fourth oil hole; an eighth oil hole is provided between the second annular cavity and the third annular cavity, and the shock absorber oil passes through the third oil hole, enters the first annular channel, enters the third annular cavity through the fourth oil hole, and then passes through the eighth oil hole, so that the shock absorber oil enters the second annular cavity.

[0016] Furthermore, a second one-way valve is provided between the third annular cavity and the second annular cavity.

[0017] Furthermore, a compression solenoid valve transition block is arranged outside the compression solenoid valve transition sleeve, and a restoration solenoid valve transition block is arranged inside the outer valve sleeve of the restoration solenoid valve.

[0018] Furthermore, a second piston or a diaphragm is slidably connected inside the liquid storage cylinder, and the second piston or the diaphragm and the bottom of the liquid storage cylinder are filled with nitrogen.

[0019] Furthermore, the outer valve sleeve of the compression solenoid valve and the liquid storage cylinder are connected via a second oil hole to facilitate the circulation of shock absorber oil.

[0020] Furthermore, a safety valve is provided on the first piston to relieve pressure when the pressure is higher than a set value.

[0021] Furthermore, a guide is installed on the top of the liquid storage cylinder, and the guide is installed on the liquid storage cylinder through a locking gasket.

[0022] Furthermore, the compression solenoid valve transition sleeve and the recovery solenoid valve transition sleeve are in different horizontal planes.

[0023] Compared with the prior art, the beneficial effect of the present invention is that the adjustable damping shock absorber, through the coordination between the liquid storage cylinder, the working cylinder, the first piston, the restoring chamber, the connecting plate, the compression chamber and the power mechanism, when encountering uneven road surface in actual use, is scanned by laser radar, etc., and then the power mechanism is started by the algorithm, so that the power mechanism drives the shock absorber oil inside the liquid storage cylinder to flow (or flow out) from the compression chamber and the energy storage chamber through the upper chamber hole to the restoring chamber, so that the pressure inside the restoring chamber increases (decreases), thereby being able to actively realize the wheel lifting (lowering) operation, so that the vehicle can pass through the road surface in a more stable posture, thereby improving the comfort of the vehicle and greatly improving the practicality of the shock absorber. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0025] Figure 1 A schematic diagram of an overall cross-sectional structure provided by an embodiment of the present invention;

[0026] Figure 2 for Figure 1 Schematic diagram of the enlarged structure of the A area in the middle;

[0027] Figure 3 for Figure 1 Schematic diagram of the structure of the enlarged structure of the middle B area;

[0028] Figure 4 This is a schematic structural diagram of a diaphragm installation method provided in an embodiment of the present invention.

[0029] Description of the accompanying drawings: 1. piston rod; 2. liquid storage cylinder; 3. upper cavity hole; 4. recovery cavity; 5. working cylinder; 6. safety valve; 7. first piston; 8. recovery transition cylinder; 9. compression transition cylinder; 10. first oil hole; 11. second oil hole; 12. compression solenoid valve transition block; 13. first one-way valve; 14. first gear pump port; 15. compression solenoid valve transition sleeve; 16. compression CDC solenoid valve; 17. third oil hole; 18. first annular channel; 19. first pump valve block; 20. fourth oil hole; 21. second annular channel; 22. compression solenoid valve outer valve sleeve; 23. fifth oil hole; 24. sixth oil hole; 25 , nitrogen; 26, accumulator; 27, second piston; 28, energy storage chamber; 29, connecting plate; 30, compression chamber; 31, first annular chamber; 32, seventh oil hole; 33, eighth oil hole; 34, recovery solenoid valve transition block; 35, second one-way valve; 36, recovery solenoid valve transition sleeve; 37, ninth oil hole; 38, third annular channel; 39, fourth annular channel; 40, recovery solenoid valve outer valve sleeve; 41, recovery CDC solenoid valve; 42, tenth oil hole; 43, second pump valve block; 44, second gear pump port; 45, second annular chamber; 46, third annular chamber; 47, guide; 48, locking pad; 49, diaphragm. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-4 The present invention provides a technical solution: an adjustable damping shock absorber, comprising a liquid storage cylinder 2 and a working cylinder 5 installed inside the liquid storage cylinder 2, shock absorber oil is arranged in the liquid storage cylinder 2, a piston rod 1 is vertically slidably connected inside the working cylinder 5, and a first piston 7 is arranged at the bottom of the piston rod 1; a recovery chamber 4 is formed between the first piston 7 and the working cylinder 5, and the recovery chamber 4 is connected to the liquid storage cylinder 2 through an upper cavity hole 3; a connecting plate 29 is fixed inside the liquid storage cylinder 2, a compression chamber 30 is formed between the first piston 7 and the connecting plate 29, and an energy storage chamber 28 for storing an energy accumulator 26 is arranged at the connecting plate 29 and the bottom of the liquid storage cylinder 2; a power mechanism is arranged on the outside of the liquid storage cylinder 2, and the power mechanism drives the shock absorber oil in the liquid storage cylinder 2 to flow inside the compression chamber 30, the energy storage chamber 28 and the recovery chamber 4, so as to realize the active up and down movement of the wheel.

[0032] Specifically, the adjustable damping shock absorber includes a liquid storage barrel 2 and a working cylinder 5 installed inside the liquid storage barrel 2. The liquid storage barrel 2 is provided with shock absorber oil. Preferably, the shock absorber oil is usually a high-viscosity liquid with good temperature stability and chemical stability. It needs to maintain a stable damping effect under high temperature and high pressure conditions, and its performance will not be reduced due to long-term use. At the same time, the shock absorber oil also needs to have a low bubble anti-emulsification property to prevent bubbles and emulsification from being generated in the shock absorber system. A piston rod 1 is vertically slidably connected inside the working cylinder 5, and a first piston 7 is provided at the bottom of the piston rod 1. A recovery chamber 4 is formed between the first piston 7 and the working cylinder 5, and the recovery chamber 4 is connected to the liquid storage barrel 2 through the upper cavity hole 3. A connecting plate 29 is fixed inside the liquid storage cylinder 2, and a compression chamber 30 is formed between the first piston 7 and the connecting plate 29. An energy storage chamber 28 for storing the energy accumulator 26 is provided at the connecting plate 29 and the bottom of the liquid storage cylinder 2. The compression chamber 30 is separated from the energy accumulator 26 by a partition, that is, the compression chamber 30, the recovery chamber 4 and the energy storage chamber 28 are independent chambers. A power mechanism is provided on the outside of the liquid storage cylinder 2, and the power mechanism drives the shock absorber oil in the liquid storage cylinder 2 to flow inside the compression chamber 30, the energy storage chamber 28 and the recovery chamber 4 to realize the active up and down movement of the wheel. Therefore, in actual use, when encountering uneven road conditions, a laser radar or the like is used to scan the road, and then the power mechanism is started through an algorithm, so that the power mechanism drives the shock absorber oil inside the liquid storage cylinder 2 to flow (or flow out) from the compression chamber 30 and the energy storage chamber 28 through the upper chamber hole 3 into the restoration chamber 4, so that the pressure inside the restoration chamber 4 increases (decreases), thereby actively realizing the wheel lifting (lowering) operation, so that the vehicle can pass through the road in a more stable posture, thereby improving the comfort of the vehicle and greatly improving the practicality of the shock absorber.

[0033] In the embodiment provided by the present invention, the liquid storage cylinder 2 is provided with a compression solenoid valve transition sleeve 15 and a recovery solenoid valve transition sleeve 36, the compression solenoid valve transition sleeve 15 is provided with a compression CDC solenoid valve 16, the recovery solenoid valve transition sleeve 36 is installed with a recovery CDC solenoid valve 41, and the recovery CDC solenoid valve 41 is connected to the liquid storage cylinder 2 through the seventh oil hole 32 and the tenth oil hole 42.

[0034] In the embodiment provided by the present invention, a restoring transition cylinder 8 and a compression transition cylinder 9 are respectively provided at the upper and lower ends of the outer side of the working cylinder 5. The restoring transition cylinder 8 and the compression transition cylinder 9 are respectively floated on the outer side of the working cylinder 5 through O-ring interference fit, and form a first annular cavity 31 and a second annular cavity 45. The first annular cavity 31 is connected to the compression cavity 30 through the ninth oil hole 37.

[0035] In the embodiment provided by the present invention, the compression chamber 30 is connected to the first annular chamber 31 through the first oil hole 10, the compression solenoid valve transition sleeve 15 is provided with a first annular channel 18 and a second annular channel 21, the recovery solenoid valve transition sleeve 36 is provided with a third annular channel 38 and a fourth annular channel 39, and the first annular chamber 31 is connected to the second annular channel 21.

[0036] In the embodiment provided by the present invention, a sixth oil hole 24 is provided on the liquid storage cylinder 2, and a fifth oil hole 23 is provided between the second annular channel 21 and the energy storage chamber 28; the shock absorber inside the energy storage chamber 28 passes through the sixth oil hole 24 and the fifth oil hole 23 in sequence and then enters the second annular channel 21, and a first one-way valve 13 is provided between the fifth oil hole 23 and the second annular channel 21.

[0037] In the embodiment provided by the present invention, the power mechanism includes an external gear pump, a first pump valve block 19 is arranged inside the outer valve sleeve of the first solenoid valve, and a first gear pump port 14 is arranged on the first pump valve block 19; a second pump valve block 43 is arranged inside the outer valve sleeve of the second solenoid valve, and a second gear pump port 44 is arranged on the second pump valve block 43; the gear pump is connected to the compression solenoid valve transition sleeve 15 through the first gear pump port 14, and the gear pump is connected to the recovery solenoid valve transition sleeve 36 through the second gear pump port 44, and the third annular channel 38 is arranged between the second gear pump and the second annular cavity 45, and the second annular cavity 45 is connected to the recovery cavity 4 through the upper cavity hole 3.

[0038] During work:

[0039] Active control mode: lifting the wheel, the compression CDC solenoid valve 16 and the restoration CDC solenoid valve 41 are powered on and closed, the shock absorber oil in the compression chamber 30 enters the first annular cavity 31 through the first oil hole 10, and then enters the second annular channel 21 from the first annular cavity 31, and at the same time, the shock absorber oil in the energy storage cavity 28 passes through the sixth oil hole 24, and then from the fifth oil hole 23, pushes open the first check valve 13 and enters the second annular channel 21, and then the shock absorber oil passes through the first gear pump port 14 from the gear pump through the second gear pump port 44 to enter the third annular channel 38, and then from the second annular cavity 45, from the upper cavity hole 3 to enter the restoration cavity 4, the pressure in the restoration cavity 4 increases, pushing the liquid storage cylinder 2 to move upward, thereby achieving the lifting of the wheel.

[0040] In the embodiment provided by the present invention, the energy storage chamber 28 and the third annular channel 38 are communicated with each other through the eighth oil hole 33 , and a second one-way valve 35 is provided at the position of the eighth oil hole 33 .

[0041] In the embodiment provided by the present invention, a first oil hole 10 is provided between the first annular cavity 31 and the compression cavity 30 , and the shock absorber oil enters the compression cavity 30 through the first annular cavity 31 and the first oil hole 10 .

[0042] In the embodiment provided by the present invention, the first annular cavity 31 and the first annular channel 18 are communicated with each other through the third oil hole 17, and the first annular channel 18 and the third annular cavity 46 are communicated with each other through the fourth oil hole 20; an eighth oil hole 33 is provided between the second annular cavity 45 and the third annular cavity 46, and the shock absorber oil passes through the third oil hole 17, enters the first annular channel 18, enters the third annular cavity 46 through the fourth oil hole 20, and then passes through the eighth oil hole 33, so that the shock absorber oil enters the second annular cavity 45.

[0043] In the embodiment provided by the present invention, a second one-way valve 35 is provided between the third annular cavity 46 and the second annular cavity 45 .

[0044] Active control mode: lowering the wheel is the reverse operation of raising the wheel

[0045] Lowering the wheel: The compression CDC solenoid valve 16 and the recovery CDC solenoid valve 41 are powered on and closed, and the shock absorber oil in the recovery chamber 4 enters the second annular chamber 45 through the upper chamber hole 3, and then enters the third annular channel 38. At the same time, the shock absorber oil in the energy storage chamber 28 passes through the eighth oil hole 33, pushes open the second one-way valve 35 and enters the third annular channel 38. Then the shock absorber oil passes through the second gear pump port 44 from the gear pump through the first gear pump port 14 and enters the second annular channel 21, and then enters the first annular chamber 31, and then enters the compression chamber 30 through the first oil hole 10. The pressure in the compression chamber 30 increases, pushing the liquid storage cylinder 2 to move downward, thereby achieving lowering the wheel.

[0046] In the embodiment provided by the present invention, a compression solenoid valve transition block 12 is further provided on the outside of the compression solenoid valve transition sleeve 15 , and a restoration solenoid valve transition block 34 is further provided inside the restoration solenoid valve outer valve sleeve 40 .

[0047] CDC shock absorber damping mode: compression damping process

[0048] Compression damping: The compression CDC solenoid valve 16 and the restoration CDC solenoid valve 41 are both energized and are in the damping state required by the system. The piston rod 1 and the first piston 7 move downward, and the shock absorber oil in the compression chamber 30 enters the first annular chamber 31 through the first oil hole 10. The compression CDC solenoid valve 16 is energized (the size change of the solenoid valve damping hole is realized according to the algorithm) and opened. The shock absorber oil in the first annular chamber 31 passes through the third oil hole 17 and enters the first annular channel 18, enters the third annular chamber 46 through the fourth oil hole 20, and then passes through the eighth oil hole 33 to push open the second one-way valve 35 and enter the second annular chamber 45. At the same time, the shock absorber oil in the annular chamber passes through the second annular channel 21, from the first gear pump port 14, from the gear pump through the second gear pump port 44, into the third annular channel 38 and flows into the second annular chamber 45, and then enters the restoration chamber 4 through the upper chamber hole 3, realizing the shock absorber compression damping force.

[0049] CDC shock absorber damping mode: recovery damping process

[0050] Restoration damping: The compression CDC solenoid valve 16 and the restoration CDC solenoid valve 41 are both energized and are in the damping state required by the system. The piston rod 1 and the first piston 7 move upward, and the shock absorber oil in the restoration chamber 4 enters the second annular chamber 45 through the upper chamber hole 3. The restoration CDC solenoid valve 41 is energized (the size change of the solenoid valve damping hole is realized according to the algorithm) and opened. The shock absorber oil in the second annular chamber 45 passes through the upper chamber hole 3 and enters the fourth annular channel 39, enters the third annular chamber 46 through the ninth oil hole 37, and then pushes open the first one-way valve 13 through the fifth oil hole 23 to enter the first annular chamber 31. At the same time, the shock absorber oil in the annular chamber passes through the third annular channel 38, from the second gear pump port 44, from the gear pump through the first gear pump port 14, enters the second annular channel 21 and flows into the first annular chamber 31, and then enters the compression chamber 30 through the first oil hole 10 to realize the restoration damping force of the shock absorber.

[0051] In the embodiment provided by the present invention, the liquid storage cylinder 2 is also slidably connected with a second piston 27 or a diaphragm 49, and the second piston 27 or the diaphragm 49 and the bottom of the liquid storage cylinder 2 are filled with nitrogen 25, wherein the nitrogen 25 is high-pressure nitrogen 25, and the nitrogen 25 is inflated in the small hole at the bottom of the liquid storage cylinder 2 using a special inflating welding integrated machine to ensure that there is no leakage. In other embodiments, the principle of the diaphragm 49 is equivalent to the principle of the second piston 27.

[0052] In the embodiment provided by the present invention, the outer valve sleeve 22 of the compression solenoid valve is communicated with the liquid storage cylinder 2 through the second oil hole 11 to facilitate the circulation of the shock absorber oil.

[0053] In the embodiment provided by the present invention, a safety valve 6 is provided on the first piston 7 to relieve pressure when the pressure is higher than a set value.

[0054] In the embodiment provided by the present invention, a guide 47 is installed on the top of the liquid storage cylinder 2, and the guide 47 is installed on the liquid storage cylinder 2 through a locking pad 48. Figure 1 As shown, the flange of the upper end of the liquid storage cylinder 2 is pressed onto the locking pad 48 to improve the sealing performance of the liquid storage cylinder 2 and also improve the stability of the guide 47 during installation.

[0055] In the embodiment provided by the present invention, the compression solenoid valve transition sleeve 15 and the recovery solenoid valve transition sleeve 36 are at different horizontal planes, which can meet the installation requirements of different vehicles.

[0056] It should be noted that the electrical equipment involved in this application can be powered by batteries or external power supply.

[0057] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0058] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable damping shock absorber, comprising a liquid reservoir (2) and a working cylinder (5) installed inside the liquid reservoir (2), wherein shock absorber oil is arranged in the liquid reservoir (2), characterized in that: A piston rod (1) is vertically slidably connected inside the working cylinder (5), and a first piston (7) is arranged at the bottom of the piston rod (1); A recovery chamber (4) is formed between the first piston (7) and the working cylinder (5), and the recovery chamber (4) is connected to the liquid storage cylinder (2) through the upper chamber hole (3); A connecting plate (29) is fixed inside the liquid storage cylinder (2), a compression chamber (30) is formed between the first piston (7) and the connecting plate (29), and an energy storage chamber (28) for storing an energy accumulator (26) is provided between the connecting plate (29) and the bottom of the liquid storage cylinder (2); A power mechanism is arranged outside the liquid storage cylinder (2), and the power mechanism drives the shock absorber oil in the liquid storage cylinder (2) to flow inside the compression chamber (30), the energy storage chamber (28) and the recovery chamber (4), so as to realize the active up and down movement of the wheel.

2. The adjustable damping shock absorber according to claim 1, characterized in that: The liquid storage cylinder (2) is provided with a compression solenoid valve transition sleeve (15) and a recovery solenoid valve transition sleeve (36); a compression CDC solenoid valve (16) is arranged inside the compression solenoid valve transition sleeve (15); a recovery CDC solenoid valve (41) is installed inside the recovery solenoid valve transition sleeve (36); the recovery CDC solenoid valve (41) is communicated with the liquid storage cylinder (2) through the seventh oil hole (32) and the tenth oil hole (42).

3. The adjustable damping shock absorber according to claim 2, characterized in that: A restoring transition cylinder (8) and a compression transition cylinder (9) are respectively arranged at the upper and lower ends of the outer side of the working cylinder (5); the restoring transition cylinder (8) and the compression transition cylinder (9) are respectively floated on the outer side of the working cylinder (5) through an O-ring interference fit, and form a first annular cavity (31) and a second annular cavity (45); the first annular cavity (31) is connected to the compression cavity (30) through a ninth oil hole (37).

4. The adjustable damping shock absorber according to claim 3, characterized in that: The compression chamber (30) is connected to the first annular chamber (31) through a first oil hole (10); a first annular channel (18) and a second annular channel (21) are provided on the compression solenoid valve transition sleeve (15); a third annular channel (38) and a fourth annular channel (39) are provided on the recovery solenoid valve transition sleeve (36); and the first annular chamber (31) is connected to the second annular channel (21).

5. The adjustable damping shock absorber according to claim 4, characterized in that: The liquid storage cylinder (2) is provided with a sixth oil hole (24), and a fifth oil hole (23) is provided between the second annular channel (21) and the energy storage chamber (28); The shock absorber inside the energy storage chamber (28) passes through the sixth oil hole (24) and the fifth oil hole (23) in sequence and then enters the second annular channel (21), and a first one-way valve (13) is provided between the fifth oil hole (23) and the second annular channel (21).

6. The adjustable damping shock absorber according to claim 5, characterized in that: The power mechanism comprises an external gear pump, a first pump valve block (19) is arranged inside the outer valve sleeve of the first solenoid valve, and a first gear pump port (14) is arranged on the first pump valve block (19); A second pump valve block (43) is arranged in the outer valve sleeve of the second solenoid valve, and a second gear pump port (44) is arranged on the second pump valve block (43); The gear pump is connected to the compression solenoid valve transition sleeve (15) through the first gear pump port (14), and the gear pump is connected to the recovery solenoid valve transition sleeve (36) through the second gear pump port (44). The third annular channel (38) is arranged between the second gear pump and the second annular cavity (45), and the second annular cavity (45) is connected to the recovery cavity (4) through the upper cavity hole (3).

7. The adjustable damping shock absorber according to claim 6, characterized in that: The energy storage chamber (28) and the third annular channel (38) are in communication with each other via an eighth oil hole (33), and a second one-way valve (35) is provided at the position of the eighth oil hole (33).

8. The adjustable damping shock absorber according to claim 7, characterized in that: A first oil hole (10) is provided between the first annular cavity (31) and the compression cavity (30), and the shock absorber oil enters the compression cavity (30) through the first annular cavity (31) and the first oil hole (10).

9. The adjustable damping shock absorber according to claim 4, characterized in that: The first annular cavity (31) and the first annular channel (18) are in communication with each other through a third oil hole (17), and the first annular channel (18) and the third annular cavity (46) are in communication with each other through a fourth oil hole (20); An eighth oil hole (33) is provided between the second annular cavity (45) and the third annular cavity (46); the shock absorber oil passes through the third oil hole (17) into the first annular channel (18), enters the third annular cavity (46) through the fourth oil hole (20), and then passes through the eighth oil hole (33) so that the shock absorber oil enters the second annular cavity (45).

10. The adjustable damping shock absorber according to claim 9, characterized in that: A second one-way valve (35) is provided between the third annular cavity (46) and the second annular cavity (45).

11. The adjustable damping shock absorber according to claim 3, characterized in that: A compression solenoid valve transition block (12) is also arranged outside the compression solenoid valve transition sleeve (15), and a restoration solenoid valve transition block (34) is also arranged inside the restoration solenoid valve outer valve sleeve (40).

12. The adjustable damping shock absorber according to claim 1, characterized in that: The liquid storage cylinder (2) is also slidably connected with a second piston (27) or a diaphragm (49), and the second piston (27) or the diaphragm (49) and the bottom of the liquid storage cylinder (2) are filled with nitrogen (25).

13. The adjustable damping shock absorber according to claim 1, characterized in that: The compression solenoid valve outer valve sleeve (22) and the liquid storage cylinder (2) are also connected via a second oil hole (11) to facilitate the circulation of shock absorber oil.

14. The adjustable damping shock absorber according to claim 1, characterized in that: The first piston (7) is provided with a safety valve (6) to relieve pressure when the pressure exceeds a set value.

15. The adjustable damping shock absorber according to claim 1, characterized in that: A guide (47) is installed on the top of the liquid storage cylinder (2), and the guide (47) is installed on the liquid storage cylinder (2) through a locking pad (48).

16. The adjustable damping shock absorber according to claim 2, characterized in that: The compression solenoid valve transition sleeve (15) and the recovery solenoid valve transition sleeve (36) are at different levels.

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