A shock absorber with energy recovery

Abstract

The present invention discloses a shock absorber with energy recovery, the technical solution of which includes a telescopic rod slidably arranged in a shock-absorbing sleeve, the surface of which is provided with a thread groove that cooperates with the inner thread of the shock-absorbing sleeve, so that it rotates while moving up and down. The power generation component includes a potential energy disk and a generator, and the rotational energy of the potential energy disk is converted into electrical energy through a transmission component. The uniqueness of the present invention lies in that the thread groove of the telescopic rod is designed with a pitch that gradually decreases from the middle to the two ends, so as to achieve dynamic damping adjustment and optimize shock absorption performance. In the case of slight vibration, the design provides a quick response, and in the case of severe vibration, it enhances the damping effect and effectively suppresses the shaking of the vehicle body. At the same time, a one-way bearing and a ratchet mechanism are used to ensure the one-way transmission of energy and avoid energy loss caused by reverse movement.

Description

Technical Field

[0001] The invention relates to the technical field of shock absorbers, and in particular to a shock absorber with energy recovery. Background Art

[0002] At present, most cars use hydraulic shock absorbers or spring shock absorbers to reduce the vibration of the body after the car body is vibrated. Usually, when the car is in motion, the shock absorber under the car body will shake up and down with the vibration of the car body. The energy generated by the vibration will be consumed through the shock-absorbing spring or other structures used for buffering and shock absorption, and cannot be reused, so that the mechanical energy generated by the vibration will be wasted, which is a pity.

[0003] In order to realize the reuse of the mechanical energy of the shock absorber, there are some shock absorbers that can convert the mechanical energy generated by the up and down reciprocating motion of the shock absorber into rotational potential energy in one direction through a rack and pinion mechanism, and then drive the output shaft to rotate by allowing this rotational potential energy to drive the generator to rotate to achieve power generation, thereby realizing energy recovery. However, in actual practice, the vibration of the car is often generated instantaneously, and the process of driving the up and down reciprocating motion of the rack is almost completed instantaneously. Therefore, when the rack drives the gear, the meshing part between the two will be subjected to huge impact loads and stress concentration, thereby causing damage to the rack and pinion mechanism and affecting the service life of the device. Summary of the invention

[0004] The present invention provides a shock absorber with energy recovery, which solves the problem in the prior art that the shock absorber generates impact loads during operation that cause damage to the rack and pinion structure.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a shock absorber with energy recovery, comprising a shock-absorbing sleeve that drives an inner cavity and a telescopic rod slidably arranged in the shock-absorbing sleeve, a connecting head is rotatably arranged on the top of the telescopic rod, and a thread groove that cooperates with the inner cavity thread of the shock-absorbing sleeve is arranged on the circumferential surface of the telescopic rod, and the thread groove is used to make the telescopic rod rotate when it slides up and down relative to the shock-absorbing sleeve; it also includes a power generation component, the power generation component includes a potential energy disk and a generator, the output end of the generator is connected to an energy storage device, the potential energy disk is fixed to the telescopic rod in the circumferential direction and is connected to the input end of the generator through a transmission component; the transmission component is used to transmit the force generated by the rotation of the potential energy disk to the input end of the generator when the telescopic rod slides up and down and rotates relative to the shock-absorbing sleeve.

[0006] The present invention is further configured such that the potential energy disk includes a mounting frame which is fixed in a circumferential position relative to the shock-absorbing sleeve, and a gear ring which is rotatably provided on the mounting frame and is transmission-connected to the transmission assembly and a one-way bearing provided on the telescopic rod, wherein the inner ring of the one-way bearing is fixedly connected to the telescopic rod, and the outer ring of the one-way bearing is connected to the gear ring via a coil spring; a limiting mechanism is also provided between the outer ring of the one-way bearing and the mounting frame, and the limiting mechanism is used to make the outer ring of the one-way bearing rotate in one direction, and also includes a locking mechanism for locking or unlocking the gear ring according to the up and down movement of the telescopic rod relative to the shock-absorbing sleeve.

[0007] The present invention is further configured such that the transmission mechanism includes a generator fixedly mounted on a mounting frame, an input end of the generator is connected to an output shaft, and the output shaft and the gear ring are meshed with each other through a gear mechanism to achieve transmission.

[0008] The present invention is further configured such that two potential energy disks are provided, namely potential energy disk A and potential energy disk B, both of which are connected to the output shaft through a gear mechanism, and the potential energy disk A and potential energy disk B are distributed up and down along the length direction of the telescopic rod, and the outer rings and gear rings of the one-way bearings in the potential energy disk A and the potential energy disk B have opposite one-way rotation directions.

[0009] The present invention is further configured such that the gear mechanism includes a linkage shaft meshing with the output shaft gear, the linkage shaft and the output shaft correspond to the gear rings on the potential energy disk A and the potential energy disk B respectively, and transmission gears corresponding to the positions of the gear rings are fixedly arranged on the linkage shaft and the output shaft, and when the gear ring rotates, the transmission gear drives the linkage shaft or the output shaft to rotate; when the gear ring is in a locked state, the transmission gear idles.

[0010] The present invention is further configured such that the transmission gear includes a mounting ring fixedly mounted on a linkage shaft or an output shaft, a plurality of movable grooves are equidistantly arranged on the outer circumference of the mounting ring, a tooth block is swingably arranged in the movable groove and abuts against the tooth ring, an elastic reset member is arranged between the tooth block and the mounting ring, and when the mounting ring drives the tooth block to move relative to the tooth ring, the tooth block swings into the movable groove to move away from the tooth ring; when the tooth ring rotates relative to the mounting ring, the tooth block is in a locked state.

[0011] The present invention is further configured such that a swing surface and a drive surface are arranged on the tooth block, and the mounting ring is arc-shaped. When the mounting ring drives the tooth block to rotate relative to the tooth ring, the swing surface abuts against the tooth ring; when the tooth ring rotates relative to the mounting ring, the drive surface abuts against and cooperates with the tooth ring.

[0012] The present invention is further configured such that the locking mechanism includes a guide member arranged on a mounting frame, a metal pin is slidably arranged in the guide member and a return spring is arranged between the metal pin and the guide member, a plurality of locking grooves which are plugged and matched with the metal pin are arranged on the side of the gear ring, and an electromagnet is arranged at one end of the guide member away from the gear ring; and also includes a sensor assembly arranged on the shock-absorbing sleeve, the sensor assembly is electrically connected to the electromagnet, and is used to detect the moving direction of the telescopic rod so as to control the movement of the metal pin through the electromagnet.

[0013] The present invention is further configured such that the thread pitch of the thread groove gradually decreases from the middle portion to both ends of the telescopic rod.

[0014] In summary, the beneficial effects of the present invention are:

[0015] Compared with the prior art, the present application sets a thread groove on the surface of the telescopic rod that matches the thread of the shock-absorbing sleeve. When the vehicle body is bumped and vibrated and drives the telescopic rod to move up and down, the threaded cooperation between the thread groove and the shock-absorbing sleeve will naturally convert the up and down movement of the telescopic rod into rotational movement, and the sliding conversion process of the thread is gradual, and there will be no instantaneous strong impact in the movement, which effectively disperses the force in the movement and will not produce instantaneous impact like the rack-pinion system. At the same time, the friction during the rotation process is small, reducing the mechanical loss between components. The potential energy disk that cooperates with the telescopic rod and can rotate unidirectionally with the lifting and lowering of the telescopic rod can transmit the rotation of the telescopic rod to the output shaft through the potential energy disk, and then to the generator. The generator converts the mechanical potential energy into electrical energy and transmits it to the energy storage device for storage, realizing the utilization of mechanical potential energy in the shock absorption process and saving energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural diagram of this embodiment.

[0017] Figure 2 It is a partial exploded view of this embodiment.

[0018] Figure 3 This is a schematic diagram of the explosion of the potential energy disk.

[0019] Figure 4 Schematic diagram of the gear mechanism of this embodiment.

[0020] Figure 5 It is a schematic diagram of the transmission gear.

[0021] Figure 6 It is a schematic diagram of the locking mechanism.

[0022] Figure 7 This is an enlarged view of the ratchet mechanism.

[0023] 1. Shock-absorbing sleeve; 2. Telescopic rod; 3. Connector; 4. Threaded groove; 5. Guide block; 6. Power generation assembly; 61. Generator; 62. Potential energy disk; 621. Mounting frame; 622. One-way bearing; 623. Coil spring; 624. Gear ring; 63. Transmission assembly; 631. Output shaft; 632. Gear mechanism; 6321. Linkage shaft; 64. Limiting mechanism; 641. Ratchet; 642. Ratchet pawl; 643. Slot; 644. Elastic member; 65. Locking mechanism; 651. Guide member; 652. Metal pin; 653. Electromagnet; 654. Locking groove; 7. Transmission gear; 71. Mounting ring; 72. Movable groove; 73. Gear block; 731. Swinging surface; 732. Driving surface; 74. Elastic reset member. DETAILED DESCRIPTION

[0024] The following will be combined with 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 the present invention.

[0025] Embodiment 1

[0026] like Figure 1-7 As shown, this embodiment discloses a shock absorber with energy recovery, including a shock absorbing sleeve 1 driving an inner cavity and a telescopic rod 2 slidably arranged in the shock absorbing sleeve 1, the bottom of the shock absorbing sleeve 1 will be connected to the wheel, the top of the telescopic rod 2 will be connected to the vehicle body, and an elastic element is arranged between the shock absorbing sleeve 1 and the telescopic rod 2 to support the telescopic rod 2; for example, the elastic element can be a coil spring, which is arranged in the shock absorbing sleeve 1 and abuts against the telescopic rod 2, so that when the vehicle is bumpy, the telescopic rod 2 and the shock absorbing sleeve 1 can slide up and down relatively to achieve shock absorption of the vehicle foundation.

[0027] At the same time, a connector 3 is rotatably provided at the top of the telescopic rod 2. The rotatably provided connector 3 can connect the vehicle body to the telescopic rod 2 while ensuring the free rotation of the telescopic rod 2. A thread groove 4 is provided on the circumferential surface of the telescopic rod 2 to match the inner cavity thread of the shock-absorbing sleeve 1. A guide block 5 is convexly provided at the opening of the shock-absorbing sleeve 1, that is, at one end of the shock-absorbing sleeve 1 close to the telescopic rod 2 to match the thread groove 4. Through the provision of the guide block 5 on the inner wall of the shock-absorbing sleeve 1, the telescopic rod 2 will rotate forward or reverse when sliding up and down relative to the shock-absorbing sleeve 1, and the up and down movement of the telescopic rod 2 will be naturally converted into a rotational movement. The sliding conversion process of the thread is gradual, and there will be no instantaneous strong impact in the movement, which effectively disperses the force in the movement and will not produce instantaneous impact like the rack-pinion system. At the same time, the friction force in the rotation process is small, which reduces the mechanical loss between components.

[0028] It also includes a power generation component 6, which includes a potential energy disk 62 that rotates synchronously with the telescopic rod 2 and a generator 61. The output end of the generator 61 is connected to an energy storage device, which can be a rechargeable battery connected to the equipment in the car. When the telescopic rod 2 rotates, it will drive the potential energy disk 62 to rotate synchronously, and the potential energy disk 62 is connected to the input end of the generator 61 through a transmission component 63; the transmission component 63 can transmit the force generated by the rotation of the potential energy disk 62 to the input end of the generator 61, so that the generator 61 can start to generate electricity. After generating electricity, the generator 61 will transmit the electrical energy to the energy storage device for storage, and finally realize the recovery of the potential energy generated by the up and down movement of the shock absorber caused by the bumps of the vehicle, thereby realizing the effective recovery of vibration energy, avoiding the waste of energy in traditional shock absorbers, and improving the energy efficiency of the vehicle.

[0029] like Figure 2-3 As shown, the potential energy disk 62 includes a mounting frame 621 which is fixed in a circumferential position relative to the shock-absorbing sleeve 1, and a gear ring 624 which is transmission-connected to the transmission assembly 63 and a one-way bearing 622 which is arranged on the telescopic rod 2 are rotatably arranged on the mounting frame 621. The inner ring of the one-way bearing 622 is fixedly connected to the telescopic rod 2, and the outer ring of the one-way bearing 622 is connected to the gear ring 624 via a coil spring 623. A limiting mechanism 64 is also arranged between the outer ring of the one-way bearing 622 and the mounting frame 621, and the limiting mechanism 64 is used to make the outer ring of the one-way bearing 622 rotate in one direction.

[0030] Among them, the mounting frame 621 is fixedly connected to the vehicle body. When the telescopic rod 2 slides up and down relative to the shock-absorbing sleeve 1 and rotates, it will drive the inner ring of the one-way bearing 622 to rotate synchronously. The one-way bearing 622 is a prior art and can only drive its outer ring to rotate in one direction, while it will idle in the other direction. When the telescopic rod 2 descends, the telescopic rod 2 will rotate counterclockwise, thereby driving the inner ring of the one-way bearing 622 of the potential energy disk 62 to rotate counterclockwise. The inner ring is in a linkage state with the outer ring at this time, so the outer ring will rotate synchronously with the inner ring, and the outer ring is connected to the gear ring 624 through the coil spring 623, and the gear ring 624 will be locked by the locking mechanism 65, so the rotation of the outer ring will cause the coil spring 623 to contract to achieve energy storage.

[0031] When the telescopic rod 2 rises and rotates clockwise, the locking mechanism 65 contacts the locking state of the gear ring 624, and the inner ring of the one-way bearing 622 also rotates clockwise. At this time, the inner ring and the outer ring are in a clutch state, and the outer ring is locked with the ratchet mechanism between the mounting frame 621 in the clockwise rotation direction. Therefore, the outer ring of the one-way bearing 622 will not be driven by the inner ring and will be in a fixed state. At this time, the coil spring 623 releases energy, thereby driving the gear ring 624 to rotate. The force generated by the rotation of the gear ring 624 will be transmitted to the generator 61 by the transmission mechanism, so that the generator 61 generates electrical energy.

[0032] In the above structure, the telescopic rod 2 is flexibly connected to the gear ring 624 through the coil spring 623. When the potential energy generated by the vibration of the vehicle is transmitted to the telescopic rod 2, the potential energy received by the telescopic rod 2 will be absorbed by the coil spring 623. The coil spring 623 absorbs the impact force through elastic deformation and converts the instantaneous impact into slowly released elastic energy. This buffering effect reduces the instantaneous load on the gear ring 624 and the bearing in the transmission system, protects the generator 61 and other transmission components, makes the output of the generator 61 more stable, and avoids fatigue damage to gears or bearings caused by repeated impacts.

[0033] The ratchet mechanism between the outer ring of the one-way bearing 622 and the mounting frame 621 ensures that the gear ring 624 can rotate freely in a predetermined direction and is locked in the reverse direction, thereby locking the movement in the non-working direction and avoiding the reverse rotation that may cause ineffective friction or mechanical interference of the meshing parts, accelerate the wear of the parts, and reduce the waste of mechanical energy.

[0034] like Figure 7 As shown, the ratchet mechanism is a conventional means in the field, including an elastically swingable pawl 642 and a ratchet tooth 641 arranged according to the movement path of the pawl 642. In this embodiment, the ratchet tooth 641 is annular, and the pawl 642 is arranged in a slot 643 of the outer ring of the one-way bearing 622, and an elastic member 644 is arranged between the slot 643. The elastic member 644 can ensure that the pawl 642 and the ratchet tooth 641 always maintain abutment and fit.

[0035] like Figure 6 As shown, the locking mechanism 65 includes a guide member 651 arranged on the mounting frame 621, a metal pin 652 is slidably arranged in the guide member 651, and a return spring is arranged between the metal pin 652 and the guide member 651. The connection method between the return spring and the metal pin 652 and the position of the return spring in the guide member 651 are conventional means in the field, so they are not elaborated in detail; a plurality of locking grooves 654 are arranged on the side of the gear ring 624, which are plugged into and matched with the metal pin 652, and an electromagnet 653 is arranged at one end of the guide member 651 away from the gear ring 624; and also includes a sensor assembly arranged on the shock-absorbing sleeve 1, the sensor assembly is electrically connected to the electromagnet 653, and is used to detect the moving direction of the telescopic rod 2 so as to control the movement of the metal pin 652 through the electromagnet 653.

[0036] The sensor can be a Hall sensor, which is arranged on the shock-absorbing sleeve 1 and can detect whether the telescopic rod 2 rises or falls. When the Hall sensor detects the movement of the telescopic rod 2, it will transmit a signal to the control module of the car, and then the control module will control the on and off of the electromagnet 653, thereby controlling the movement of the metal pin 652, and then realizing the locking and unlocking of the gear ring 624.

[0037] like Figure 4 As shown, the transmission mechanism includes a generator 61 fixedly mounted on a mounting frame 621 , an input end of the generator 61 is connected to an output shaft 631 , and the output shaft 631 and the gear ring 624 are meshed with each other through a gear mechanism 632 to achieve transmission.

[0038] The gear mechanism 632 can be an ordinary gear fixedly connected to the output shaft 631 and meshing with the gear ring 624. When there is only one potential energy disk 62, an ordinary gear can be used to connect the output shaft 631 and the potential energy disk 62. At this time, the unidirectional rotation of the potential energy disk 62 will drive the output shaft 631 to rotate through the gear mechanism 632, and when the coil spring 623 is in the energy storage state, the output shaft 631 is in a stopped state, so there will be no interference with the potential energy disk 62.

[0039] When there are two potential energy disks 62, namely potential energy disk 62A and potential energy disk 62B, both are connected to the output shaft 631 through a gear mechanism 632, and the potential energy disk 62A and the potential energy disk 62B are distributed up and down along the length direction of the telescopic rod 2, and the outer rings of the one-way bearings 622 and the gear ring 624 in the potential energy disk 62A and the potential energy disk 62B have opposite one-way rotation directions; the outer rings of the one-way bearings 622 and the gear ring 624 of the potential energy disk 62A and the potential energy disk 62B rotate in opposite directions, so that when the telescopic rod 2 slides up and down and rotates, different potential energy disks 62 can be driven to rotate, when the telescopic rod 2 rises, the potential energy disk 62A stores energy and the potential energy disk 62B releases energy; when the telescopic rod 2 descends, it works in the opposite direction to ensure that energy recovery can be achieved during the up and down movement, thereby improving the efficiency of energy recovery and ensuring that the system can continue to generate electricity in any state of motion.

[0040] When two potential energy disks 62 are used, Figure 4-5 As shown, the gear mechanism 632 includes a linkage shaft 6321 that is gear-engaged with the output shaft 631. The linkage shaft 6321 and the output shaft 631 correspond to the toothed ring 624 on the potential energy disk 62A and the potential energy disk 62B respectively. A transmission gear 7 corresponding to the position of the toothed ring 624 is fixedly arranged on the linkage shaft 6321 and the output shaft 631. When the toothed ring 624 rotates, the transmission gear 7 drives the linkage shaft 6321 or the output shaft 631 to rotate; when the toothed ring 624 is in a locked state, the transmission gear 7 idles.

[0041] The transmission gear 7 includes a mounting ring 71 fixedly arranged on the linkage shaft 6321 or the output shaft 631, and a plurality of movable grooves 72 are arranged at equal distances on the outer side of the circumference of the mounting ring 71. A tooth block 73 is swingably arranged in the movable groove 72 to abut against the gear ring 624, and an elastic reset member 74 is arranged between the tooth block 73 and the mounting ring 71. When the mounting ring 71 drives the tooth block 73 to move relative to the gear ring 624, the tooth block 73 swings into the movable groove 72 to move away from the gear ring 624; when the gear ring 624 rotates relative to the mounting ring 71, the tooth block 73 is in a locked state.

[0042] The linkage shaft 6321 and the output shaft 631 are meshed by gears, so that no matter whether the potential energy disk 62A or the potential energy disk 62B rotates, the output shaft 631 always keeps the same rotation direction; at the same time, since there is always a toothed ring 624 in a rotating state, the output shaft 631 and the linkage shaft 6321 will always be in a rotating state. When the transmission gear 7 drives the tooth block 73 to move, the tooth block 73 can swing into the movable groove 72 to move away from the toothed ring 624; when the toothed ring 624 rotates, the tooth block 73 is in a locked state to ensure power transmission. This design ensures the efficient use of multiple potential energy disks 62, reduces energy loss, improves the overall efficiency of the system, and avoids mutual interference between the two potential energy disks 62.

[0043] The tooth block 73 is provided with a swing surface 731 and a driving surface 732, and the mounting ring 71 is arc-shaped. When the mounting ring 71 drives the tooth block 73 to rotate relative to the tooth ring 624, the swing surface 731 abuts against the tooth ring 624; when the tooth ring 624 rotates relative to the mounting ring 71, the driving surface 732 abuts against and cooperates with the tooth ring 624. The arc-shaped swing surface 731 can reduce the friction between the tooth block 73 and the tooth ring 624 when the tooth block 73 moves in contact with the tooth ring 624, thereby reducing the wear at the connection; and the swing surface 731 can ensure that the tooth ring 624 abuts against the tooth block 73, so that the tooth ring 624 can stably drive the rotation of the transmission gear 7 through the tooth block 73 to realize the transmission of kinetic energy.

[0044] like Figure 2 As shown, the thread pitch of the thread groove 4 on the surface of the telescopic rod 2 gradually decreases from the middle to the ends of the telescopic rod 2. The pitch of the thread groove 4 determines the sliding speed and rotation amplitude of the telescopic rod 2 in the shock-absorbing sleeve 1. When the pitch is larger, the rotation resistance is smaller; when the pitch is smaller, the rotation resistance increases.

[0045] At the beginning of the vibration, the shock absorber rod is in the middle position. At this time, lower damping is required to quickly respond to smaller vibrations. This design can improve the system's sensitivity to slight vibrations and avoid excessive initial resistance affecting the shock absorption effect. When the shock absorber rod moves to both ends (that is, close to the compression or tension limit position), the pitch becomes smaller, which increases the resistance and makes the damping effect stronger. This design can effectively suppress larger impact forces, avoid violent shaking of the vehicle body, and enhance the stability of the vehicle and ride comfort.

[0046] At the same time, the thread groove 4 is not only responsible for the sliding of the shock absorber rod, but also determines the amplitude of its rotational movement. The change in pitch will affect the efficiency of the telescopic rod 2 rotating to drive the potential energy disk 62; in the slight vibration stage, the shock absorber rod rotates faster, which helps to improve the initial energy recovery efficiency. When the shock absorber rod moves to the extreme position, the thread groove 4 provides higher resistance, making the movement of the potential energy disk 62 more stable, improving the running stability of the generator 61, and reducing idling and loss.

[0047] On the basis of the above, in order to improve the smoothness of sliding between the thread groove 4 and the guide block 5, thereby reducing the friction between the telescopic rod 2 and the shock-absorbing sleeve 1, the guide block 5 can be a ball disposed on the shock-absorbing sleeve 1, and the ball can reduce the friction between the two, thereby improving the smoothness of the operation of the device.

[0048] In the first embodiment, Figure 1 As shown, the mounting frame 621 of the potential energy disk 62 is fixedly arranged at the end of the telescopic rod 2 away from the shock-absorbing sleeve 1, and the relative position between the mounting frame 621 and the telescopic rod 2 in the axial direction is fixed.

[0049] Embodiment 2

[0050] There are additional options for the installation position of the potential energy disk 62; the mounting frame 621 of the potential energy disk 62 can be fixed on the shock absorbing sleeve 1 and located at the connection between the shock absorbing sleeve 1 and the telescopic rod 2, wherein the inner ring of the one-way bearing 622 in the potential energy disk 62 and the telescopic rod 2 are relatively fixed in the circumferential direction, but can slide relatively in the axial position; in order to achieve this effect, the inner ring of the one-way bearing 622 and the telescopic rod 2 are connected by a slide groove and a slide rail, and the slide groove runs through the axial direction of the telescopic rod 2, thereby ensuring that the telescopic rod 2 can slide up and down relative to the one-way bearing 622.

[0051] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the design concept of the present invention should be included in the protection scope of the present invention.

Claims

1. A shock absorber with energy recovery, comprising a shock absorbing sleeve (1) driving an inner cavity and a telescopic rod (2) slidably arranged in the shock absorbing sleeve (1), characterized in that: The top end of the telescopic rod (2) is rotatably provided with a connector (3); the circumferential surface of the telescopic rod (2) is provided with a thread groove (4) that cooperates with the inner thread of the shock-absorbing sleeve (1); the thread groove (4) is used to make the telescopic rod (2) rotate when sliding up and down relative to the shock-absorbing sleeve (1); and also includes a power generation component (6); the power generation component (6) includes a potential energy disk (62) and a generator (61); the output end of the generator (61) is connected to an energy storage device; the potential energy disk (62) is fixed to the telescopic rod (2) in the circumferential direction and is connected to the input end of the generator (61) via a transmission component (63); the transmission component (63) is used to transmit the force generated by the rotation of the potential energy disk (62) to the input end of the generator (61) when the telescopic rod (2) slides up and down and rotates relative to the shock-absorbing sleeve (1).

2. A shock absorber with energy recovery according to claim 1, characterized in that: The potential energy disk (62) comprises a mounting frame (621) fixed in a circumferential position relative to the shock-absorbing sleeve (1); a gear ring (624) transmission-connected to the transmission assembly (63) and a one-way bearing (622) arranged on the telescopic rod (2) are rotatably arranged on the mounting frame (621); the inner ring of the one-way bearing (622) is fixedly connected to the telescopic rod (2); the outer ring of the one-way bearing (622) is connected to the gear ring (624) via a coil spring (623); a limiting mechanism (64) is also arranged between the outer ring of the one-way bearing (622) and the mounting frame (621); the limiting mechanism (64) is used to make the outer ring of the one-way bearing (622) rotate in one direction; and the locking mechanism (65) is used to lock or unlock the gear ring (624) according to the upward and downward movement of the telescopic rod (2) relative to the shock-absorbing sleeve (1).

3. A shock absorber with energy recovery according to claim 1 or 2, characterized in that: The transmission mechanism comprises a generator (61) fixedly arranged on a mounting frame (621); an input end of the generator (61) is connected to an output shaft (631); the output shaft (631) and a gear ring (624) are meshed with each other through a gear mechanism (632) to achieve transmission.

4. A shock absorber with energy recovery according to claim 3, characterized in that: The potential energy disk (62) is provided with two, namely, the potential energy disk (62) A and the potential energy disk (62) B, both of which are connected to the output shaft (631) through a gear mechanism (632), and the potential energy disk (62) A and the potential energy disk (62) B are distributed up and down along the length direction of the telescopic rod (2), and the outer rings of the one-way bearings (622) and the gear rings (624) in the potential energy disk (62) A and the potential energy disk (62) B have opposite one-way rotation directions.

5. A shock absorber with energy recovery according to claim 4, characterized in that: The gear mechanism (632) comprises a linkage shaft (6321) meshing with a gear of an output shaft (631); the linkage shaft (6321) and the output shaft (631) correspond to the toothed rings (624) on the potential energy disk (62) A and the potential energy disk (62) B, respectively; a transmission gear (7) corresponding to the position of the toothed ring (624) is fixedly arranged on the linkage shaft (6321) and the output shaft (631); when the toothed ring (624) rotates, the transmission gear (7) drives the linkage shaft (6321) or the output shaft (631) to rotate; when the toothed ring (624) is in a locked state, the transmission gear (7) idles.

6. A shock absorber with energy recovery according to claim 5, characterized in that: The transmission gear (7) comprises a mounting ring (71) fixedly arranged on a linkage shaft (6321) or an output shaft (631); a plurality of movable grooves (72) are arranged at equal distances on the outer circumference of the mounting ring (71); a tooth block (73) is swingably arranged in the movable groove (72) and is in abutment with the tooth ring (624); an elastic reset member (74) is arranged between the tooth block (73) and the mounting ring (71); when the mounting ring (71) drives the tooth block (73) to move relative to the tooth ring (624), the tooth block (73) swings into the movable groove (72) to move away from the tooth ring (624); when the tooth ring (624) rotates relative to the mounting ring (71), the tooth block (73) is in a locked state.

7. A shock absorber with energy recovery according to claim 6, characterized in that: The tooth block (73) is provided with a swing surface (731) and a driving surface (732); the mounting ring (71) is arc-shaped; when the mounting ring (71) drives the tooth block (73) to rotate relative to the toothed ring (624), the swing surface (731) abuts against the toothed ring (624); when the toothed ring (624) rotates relative to the mounting ring (71), the driving surface (732) abuts against and cooperates with the toothed ring (624).

8. The shock absorber with energy recovery according to claim 2, characterized in that: The locking mechanism (65) comprises a guide member (651) arranged on the mounting frame (621), a metal pin (652) being slidably arranged in the guide member (651), a return spring being arranged between the metal pin (652) and the guide member (651), a plurality of locking grooves (654) being arranged on the side of the gear ring (624) and being plugged into and matched with the metal pin (652), and an electromagnet (653) being arranged at one end of the guide member (651) away from the gear ring (624); and a sensor assembly being arranged on the shock absorbing sleeve (1), the sensor assembly being electrically connected to the electromagnet (653) and being used for detecting the moving direction of the telescopic rod (2) so as to control the movement of the metal pin (652) through the electromagnet (653).

9. The shock absorber with energy recovery according to claim 1, characterized in that: The thread pitch of the thread groove (4) gradually decreases from the middle of the telescopic rod (2) to both ends.

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