Dual-mode shock absorption energy conversion shock absorber

Abstract

The invention discloses a dual-mode shock absorption energy conversion shock absorber which solves the problems that an existing shock absorber is prone to generating large noise and poor in shock absorption effect in the using process and is achieved by arranging an electromagnetic conversion device and a hydraulic conversion device on the shock absorber. The electromagnetic conversion device structurally comprises a coil and a plurality of permanent magnets, wherein the coil and the permanent magnets are arranged on the cylinder and the piston respectively and can interact with each other. The hydraulic conversion device structurally comprises a connecting seat fixedly connected to the other end of the barrel, and the other lifting ring is fixedly connected to the connecting seat; the connecting seat extends towards the outer side of the barrel body, and a hydraulic motor is connected to the extending part of the connecting seat; the hydraulic motor is respectively communicated with the upper cavity and the lower cavity through two sets of oil ways; when the piston axially moves in the cylinder body, shock absorber oil is pushed to pass through the two sets of oil ways, so that one-way rotation of the hydraulic motor is achieved.

Description

Technical Field

[0001] This invention relates to a shock absorber installed on a vehicle, and more particularly to a shock absorber installed on a motorcycle that can convert shock absorption energy. Background Technology

[0002] With increasingly severe urban traffic congestion and the continued growth of personalized transportation demands, motorcycles, due to their flexible maneuverability, good passability, and low operating costs, continue to play an important role globally, especially in developing countries, in urban-rural commuting, and urban logistics. Their ownership shows a long-term upward trend, making them an indispensable and important component of the transportation system. Compared to traditional four-wheeled vehicles, motorcycles have a compact body structure, are lighter, and have a narrower wheelbase, making them more susceptible to uneven road surfaces, sudden impacts, or continuous bumps during operation. Frequent and severe vibrations not only affect riding comfort but also threaten vehicle handling and driving safety; therefore, the performance of the shock absorption system plays a decisive role in the overall dynamic quality of the vehicle.

[0003] Traditional motorcycles commonly use hydraulic damping shock absorbers. Their working principle involves a piston moving inside a cylinder, driving damping oil through a throttling orifice on the piston combined with a valve plate structure to achieve viscous damping and dissipate the vibration energy generated during motorcycle operation. This type of device is mature in structure, responds quickly, and is cost-effective, thus it has been widely used for a long time. However, this type of hydraulic shock absorber has a fundamental drawback: the mechanical energy generated during vibration is entirely dissipated as heat and cannot be recovered. For energy-constrained new models such as electric motorcycles, this means that recoverable kinetic energy is wasted, neither supplementing the energy management system nor improving the overall energy efficiency of the vehicle. Furthermore, the existing shock absorber structure, due to the cooperation between the valve plate and the oil orifice on the piston, is prone to causing the damping oil temperature to rise and viscosity to decrease during piston movement, thus altering the shock absorber's performance parameters. On the other hand, it also tends to produce sharp noise when the shock absorber is in operation.

[0004] In summary, existing motorcycle shock absorber systems still have significant technological gaps in integrating vibration suppression and energy recovery. On the one hand, a single form of energy recovery mechanism struggles to balance structural compactness and efficiency; on the other hand, while complex solutions possess high energy conversion potential, they are difficult to implement in the motorcycle context. Therefore, there is an urgent need for a novel, compact, efficient, and highly integrated energy regenerative shock absorber technology that can integrate electromagnetic and hydraulic energy recovery pathways. This technology should maximize the recovery of shock absorption energy while meeting the constraints of motorcycle space, weight, and environmental conditions, thereby providing technical support for optimizing overall vehicle energy efficiency and achieving sustainable development goals. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a dual-mode shock absorber with energy conversion, which can adapt well to the conversion of shock absorption energy.

[0006] To solve the aforementioned technical problem, the present invention provides the following technical solution: a dual-mode shock-absorbing energy conversion damper, comprising a damper that jointly performs shock absorption and a spring sleeved around the outer periphery of the damper. The damper includes a cylinder and a piston coaxially arranged together. The piston divides the interior of the cylinder into an upper chamber and a lower chamber. A piston rod coaxially connected to the piston extends to the outer side of one end of the cylinder. A lifting ring is fixed to the outer end of the piston rod, and another lifting ring is provided at the other end of the cylinder. The invention is characterized by further comprising: The electromagnetic conversion device includes coils and several permanent magnets that can interact with each other, respectively disposed on the cylinder and the piston; The hydraulic conversion device includes a connecting seat fixed to the other end of the cylinder, and another lifting ring fixed to the connecting seat; the connecting seat extends outward toward the outside of the cylinder, and a hydraulic motor is connected to the extended part of the connecting seat; the hydraulic motor communicates with the upper chamber and the lower chamber respectively through two sets of oil circuits; when the piston moves axially inside the cylinder, it pushes the shock absorber oil through the two sets of oil circuits to realize the unidirectional rotation of the hydraulic motor.

[0007] The electromagnetic conversion device converts mechanical energy into electrical energy during the shock absorption process; the hydraulic conversion device converts hydraulic energy into mechanical energy during the shock absorption process. An external resistor can be connected to the coil to dissipate the mechanical energy generated during shock absorption, or a booster circuit can be used to power the vehicle battery's charging port. During shock absorption, the shock absorber oil can drive a hydraulic motor to idle, dissipating the hydraulic energy generated. Alternatively, an electromagnetic conversion device can be installed at the hydraulic motor to generate electricity, which can then be used to power the vehicle battery's charging port via a booster circuit. The oil passage connecting to the lower chamber can be located on the outside of the cylinder, or it can pass through the piston rod as described below. However, typically, the oil passage connecting to the upper chamber passes through the inside of the connecting seat.

[0008] Furthermore, the permanent magnet is mounted on the piston, and the coil is disposed on the outer periphery of the cylinder. This facilitates installation and reduces the sealing requirements of the permanent magnet on the shock absorber oil.

[0009] Furthermore, the piston has a split structure, with an annular mounting groove formed on its outer circumference, within which multiple permanent magnets are arranged side-by-side. The permanent magnets can be annular or semi-annular opposed structures. The split structure of the piston also facilitates the fixing of the permanent magnets.

[0010] Further, the piston includes a hollow fixed column and at least one fixing body. The fixed column is sleeved on the piston rod, the fixing body is fixedly connected to the piston rod, and the fixed column is fixedly connected to the fixing body. The piston rod is fixed through the fixed column and the fixing body, with a simple structure, and can well achieve the installation and fixation of the permanent magnet.

[0011] Further, there are two fixing bodies, which are in a "convex" shape. The two fixing bodies are symmetrically arranged. The two ends of the fixed column are sleeved on the convex heads of the fixing bodies, and an installation groove is formed between the fixing body and the fixed column. Fixing nuts can be respectively arranged at both ends of the piston to achieve the clamping of the permanent magnet. Through the two fixing bodies, the fixed column is fixed, with a simple structure and facilitating the formation of a piston with a stable structure.

[0012] Further, the connecting seat is in a block shape, and both sets of oil circuits pass through the connecting seat, which makes the shock absorber have good structural compactness.

[0013] Further, in the two sets of oil circuits, one set of oil circuit directly leads to the upper cavity; an oil inlet hole communicating with the lower cavity is provided at the position of the lower cavity part on the piston rod, an oil through hole communicating with the oil inlet hole is provided axially in the piston rod, a hose is arranged in the upper cavity, and both ends of the hose are respectively communicated and connected with the oil through hole and the connecting seat, and the other set of oil circuit passes through the oil inlet hole, the oil through hole and the hose. The structure of this shock absorber is simple and can well meet the requirements of dual-mode shock energy conversion.

[0014] Further, a number of one-way check valves are provided in the extending part of the connecting seat. The one-way check valves are arranged in the two sets of oil circuits, so that the shock absorber oil in the upper cavity and the lower cavity respectively flows through the shock absorber oil input end of the hydraulic motor under the push of the piston. Through the setting of the one-way check valves, when the shock absorber works, the shock absorber oil can enter and exit from a fixed position of the hydraulic motor, so that the shock energy can be accumulated and superimposed on the hydraulic motor in the same direction through the shock absorber oil, continuously pushing the hydraulic motor to rotate.

[0015] [[ID= XV]]Further, the one-way check valves include two groups, and the two groups of one-way check valves are connected in parallel between the two sets of oil circuits; one group of one-way check valves cuts off the flow of the shock absorber oil in the same direction, and the other group of one-way check valves cuts off the flow of the shock absorber oil in the reverse direction; the group of one-way check valves that cuts off the reverse flow of the shock absorber oil leads to the shock absorber oil input end of the hydraulic motor, and the group of one-way check valves that cuts off the same-direction flow of the shock absorber oil leads to the shock absorber oil output end of the hydraulic motor. The setting of these two groups of one-way check valves can well control the flow direction of the shock absorber oil and meet the conversion requirements of the hydraulic motor for the kinetic energy of the shock absorber oil.

[0016] Furthermore, the connecting seat is provided with a mounting pit, and a reversing block is provided in the mounting pit. The one-way shut-off valve is installed in the reversing block. Two through holes are provided on the side of the reversing block corresponding to the positions of the two sets of oil circuits. The shock absorber oil in the two sets of oil circuits enters and exits the reversing block through the corresponding through holes. By setting the reversing block, the one-way shut-off valve can be installed well, resulting in a compact structure and convenient assembly.

[0017] The beneficial effects of this invention are as follows: In this shock absorber, the permanent magnet and coil are arranged to adapt to the movement of the piston, so that the mechanical energy generated by the piston during the movement is converted into electrical energy; the shock absorber oil is converted by the piston pushing the shock absorber oil through the hydraulic motor.

[0018] This shock absorber utilizes a dual-mode energy conversion mechanism, effectively combining it with the actual operating conditions of the shock absorber to fully convert damping energy. While fulfilling the basic functions of the shock absorber, it can also convert and absorb some energy, perfectly aligning with the environmental protection concept of "green transportation." It fully utilizes the mechanical energy generated by the piston movement of the shock absorber during motorcycle operation, achieving magneto-fluid dual-path energy conversion and improving overall energy recovery efficiency. Compared to traditional single-mode recovery devices, the energy harvesting capacity per unit stroke is significantly enhanced.

[0019] This dual-mode energy conversion eliminates the need for pistons and oil valves, resulting in lower noise levels during operation. The shock absorber's compact design makes it easy to install on vehicles with limited space, such as friction-type vehicles.

[0020] The hydraulic energy recovery subsystem adopts a four-set embedded one-way shut-off valve structure, which can automatically guide the oil flow direction, so that the rotation direction of the hydraulic motor is always consistent regardless of the piston's movement during the compression or rebound stroke. This avoids the reversal control problem in the energy recovery process and improves the system's stability and reliability.

[0021] This invention integrates an electromagnetic coil, a permanent magnet assembly, a hydraulic circuit, and an oil circuit control mechanism into a single shock absorber cylinder structure, eliminating the need for additional auxiliary equipment. It meets the stringent requirements of motorcycle suspension systems for size, weight, and ease of installation, and possesses excellent system compactness and engineering feasibility.

[0022] The oil circuit control valve, permanent magnet assembly, spring preload structure, etc. are all modularly designed, which facilitates manufacturing, assembly and maintenance. Furthermore, the parameters of each component (such as spring stiffness, electromagnetic coil specifications, hydraulic motor displacement, etc.) can be adjusted according to the vehicle model, which has good adaptability and expandability. Attached Figure Description

[0023] Figure 1 This is a 3D view of the shock absorber.

[0024] Figure 2 yes Figure 1 Exploded view.

[0025] Figure 3 This is a longitudinal sectional view of the shock absorber.

[0026] Figure 4 This is a side view of the commutator block.

[0027] Figure 5 yes Figure 4 A cross-sectional view along the AA direction.

[0028] Figure 6 yes Figure 4 A cross-sectional view along the BB direction.

[0029] Figure 7 This is a magnified view showing the polarity arrangement of the permanent magnets.

[0030] Figure 8 This is a simplified diagram of a four-way shut-off valve connection, with arrows indicating the flow direction of the shock absorber oil when the piston moves in one direction.

[0031] Figure 9 This is a simplified diagram of a four-way shut-off valve connection, with arrows indicating the flow direction of the shock absorber oil when the piston moves in another direction.

[0032] In the diagram, 1. Lifting ring; 2. Connecting seat; 3. Hydraulic motor; 4. Spring; 5. Reversing block; 51. Mounting hole; 52. Thrust spring; 53. Oil passage; 54. Steel ball; 6. Coil; 7. Piston rod; 71. Oil inlet; 72. Oil passage; 8. Permanent magnet; 9. Fixed column; 10. Adjusting nut; 11. Cylinder; 12. Hoses; 13. Fixing nut; 14. Electromagnetic isolation cover; 15. Tightening nut; 16. Fixing body. Detailed Implementation

[0033] With the emergence of concepts such as "green transportation," "energy recovery," and "carbon neutrality," energy recovery technology in transportation vehicles has become a research hotspot. The shock absorber in this application utilizes linear electromagnetic induction and shock absorber hydraulic propulsion for energy conversion and regeneration. It converts the vibration energy generated during motorcycle operation into relative linear motion between a permanent magnet 8 and a coil 6, thereby outputting electrical energy under electromagnetic induction. Such devices typically consist of a permanent magnet 8 and a fixed coil 6, offering advantages such as relatively simple structure, direct output, and ease of control. However, the limited space, short suspension travel, and strict weight constraints of motorcycles necessitate consideration of factors such as power generation efficiency, volume, and structural integration.

[0034] In addition to electromagnetic methods, this shock absorber also explores energy recovery via a hydraulic path. The principle involves introducing a hydraulic motor 3 or a hydraulic power generation module into the shock absorber, which guides the shock absorber oil driven by vibration energy to the power generation unit for secondary conversion. Theoretically, this method is compatible with existing hydraulic structures and does not require overly complex configurations.

[0035] In the structural design of the electromagnetic system, the arrangement of the permanent magnets 8 needs to be considered to improve magnetic flux utilization, achieve uniform magnetic flux density distribution, and reduce magnetic leakage, thereby ensuring the conversion efficiency of the electromagnetic energy recovery system. The Halbach array, as an asymmetric arrangement of permanent magnets 8, can form a unilateral enhanced magnetic field through phase modulation, significantly increasing the magnetic flux density in the induction region and suppressing magnetic leakage. It is expected to improve the power density and efficiency of linear electromagnetic energy recovery systems within limited structural dimensions. Figure 7 The image shows the Hallbeck array arrangement of permanent magnets 8, with the polarity direction of one permanent magnet 8 formed in the radial direction of the cylinder 11, and the polarity directions of two adjacent permanent magnets 8 formed in the axial direction of the cylinder 11.

[0036] Referring to the accompanying drawings, the structure of this dual-mode shock absorber includes a damper that works together to reduce vibration and a spring 4 sleeved around the outer periphery of the damper. The damper consists of a cylinder 11 and a piston coaxially mounted together. The piston divides the interior of the cylinder 11 into an upper and lower chamber, both filled with shock absorber oil. A piston rod 7, coaxially connected to the piston, extends to the outer side of one end of the cylinder 11. A lifting ring 1 is fixed to the outer end of the piston rod 7, and another lifting ring 1 is located at the other end of the cylinder 11. In ordinary shock absorbers, the two ends of the spring 4 abut against the two lifting rings 1 respectively. However, as shown in the figure, an adjusting nut 10 is threaded onto the outer circumferential surface of the other end of the cylinder 11, and a tightening nut 15 is located on the outer side of the adjusting nut 10. One end of the spring 4 presses against the inner end face of the adjusting nut 10. By rotating the adjusting nut 10, the compression of the spring 4 can be adjusted, thereby adjusting the stiffness of the shock absorber.

[0037] To achieve the conversion of damping energy, this shock absorber is equipped with an electromagnetic conversion device and a hydraulic conversion device. The electromagnetic conversion device converts damping energy into electrical energy through electromagnetic means; the hydraulic conversion device partially converts damping energy by driving the hydraulic motor 3 to rotate through the damper oil.

[0038] The electromagnetic conversion device comprises coils 6 and several permanent magnets 8, which interact with each other, respectively mounted on the cylinder 11 and the piston. The interaction here refers to the fact that the coils 6 and permanent magnets 8 generally overlap along the axial direction of the cylinder 11. When relative axial movement occurs between them, the coils 6 cut magnetic lines of force to generate electrical energy.

[0039] The structure of the hydraulic conversion device includes a connecting seat 2 fixedly connected to the other end of the cylinder body 11, and another lifting ring 1 is fixedly connected to the connecting seat 2. The connecting seat 2 extends outward toward the outside of the cylinder body 11, and a hydraulic motor 3 is connected to the extending part of the connecting seat 2. The hydraulic motor 3 is communicated with the upper cavity and the lower cavity respectively through two sets of oil circuits. The connecting seat 2 is in a block shape, and both sets of oil circuits pass through the connecting seat 2. When the piston moves axially in the cylinder body 11, it will push the shock absorber oil through the two sets of oil circuits to realize the rotation of the hydraulic motor 3. Under normal circumstances, by setting one-way check valves on the two sets of oil circuits, when the piston pushes the shock absorber oil, the shock absorber oil will push the hydraulic motor 3 to rotate in one direction.

[0040] The piston is of a split structure, and an annular installation groove is formed on the outer peripheral surface of the piston. A plurality of permanent magnets ⑧ are installed in the installation groove. These permanent magnets ⑧ are generally circular rings, and the plurality of permanent magnets ⑧ are arranged side by side in the installation groove. The coil 6 is wound around the outer periphery of the cylinder body 11, and a cylindrical electromagnetic isolation cover 14 is sleeved on the outer periphery of the coil 6. The electromagnetic isolation cover 14 is made of metal material. The piston includes a hollow fixed column 9 and at least one fixed body 16. The fixed column 9 is sleeved on the piston rod 7, the fixed body 16 is fixedly connected to the piston rod 7, and the fixed column 9 is fixedly connected to the fixed body 16. There are two fixed bodies 16, and the fixed body 16 is in a "convex" shape. The two fixed bodies 16 are symmetrically arranged. The two ends of the fixed column 9 are sleeved on the convex heads of the fixed body 16, and the installation groove is formed between the fixed body 16 and the fixed column 9. A fixing nut 13 is provided at each end of the piston. The fixing nut 13 is threadedly connected to the piston rod 7, and the two fixing nuts 13 axially position the two fixed bodies 16, thus forming a piston with a stable structure. The outer peripheral surface of the fixed body 16 is liquid-sealed with the inner peripheral surface of the cylinder body 11. In theory, the shock absorber oil will not enter the position of the permanent magnets ⑧.

[0041] Two oil ports are provided on the end surface of the connecting seat 2 facing the cylinder body 11, and the positions of the two oil ports are within the radial range of the cylinder body 11. In one of the two sets of oil circuits, one set of oil circuit is directly communicated with the upper cavity through one oil port. An oil inlet hole 71 communicated with the lower cavity is provided on the piston rod 7 at the position of the lower cavity. The oil inlet hole 71 is arranged along the radial direction of the piston rod 7 and penetrates through the piston rod 7. A through oil hole 72 communicated with the oil inlet hole 71 is arranged axially in the piston rod 7. A hose 12 is provided in the upper cavity. The two ends of the hose 12 are respectively communicated and connected with the through oil hole 72 and the other oil port on the connecting seat 2. The other set of oil circuit passes through the oil inlet hole 71, the through oil hole 72 and the hose 12. The hose 12 is generally made of soft rubber. On the basis of ensuring the passage of the shock absorber oil, the hose 12 can also well adapt to the axial movement of the piston.

[0042] Several one-way shut-off valves are installed in the protruding part of the connecting seat 2. These valves are located in two sets of oil circuits, allowing the shock absorber oil in the upper and lower chambers to flow from the shock absorber oil input end of the hydraulic motor 3 under the push of the piston. This means that regardless of the direction of piston movement, the flow direction of the shock absorber oil in the hydraulic motor 3 is the same. The one-way shut-off valve structure includes a steel ball 54, a thrust spring 52, and a locking stud. A conical or spherical surface is provided at the position of the steel ball 54 in the oil circuit. The thrust spring 52 is fixed by the locking stud, and the thrust spring 52 presses against the steel ball 54, which in turn contacts the conical or spherical surface, thus achieving forward flow control and reverse flow control of the shock absorber oil. The one-way shut-off valves consist of two sets, each containing two valves. Two sets of one-way shut-off valves are connected in parallel between the two oil circuits. One set of one-way shut-off valves blocks the flow of shock absorber oil in the same direction, while the other set blocks the flow of shock absorber oil in the opposite direction. The set of one-way shut-off valves that blocks the flow of shock absorber oil in the opposite direction is connected to the shock absorber oil input terminal of the hydraulic motor 3, while the set of one-way shut-off valves that blocks the flow of shock absorber oil in the same direction is connected to the shock absorber oil output terminal of the hydraulic motor 3.

[0043] Figure 8 , 9 The diagram illustrates the flow direction of shock absorber oil through the one-way shut-off valves. For clarity, the four one-way shut-off valves are labeled a, b, c, and d. One-way shut-off valves a and b form a group, blocking the flow of shock absorber oil in the opposite direction. One-way shut-off valves c and d form a group, blocking the flow of shock absorber oil in the same direction. The terms "same direction" and "opposite direction" are based on the midpoint of two one-way shut-off valves in a group. If both valves block the flow of shock absorber oil in the same direction, it is called "same direction"; if both valves block the flow in the opposite direction, it is called "opposite direction." In both diagrams, the oil passage on the left connects to the lower chamber of cylinder 11, and the oil passage on the right connects to the upper chamber of cylinder 11. See also... Figure 8 When the piston moves towards the upper chamber of cylinder 11, the shock absorber oil in the upper chamber enters the right-side oil passage, and the one-way shut-off valve b is open. One-way shut-off valves a and d shut off the shock absorber oil, which then enters the hydraulic motor 3 to drive the rotor. The shock absorber oil exiting the hydraulic motor 3 enters the lower chamber of cylinder 11 through the left-side oil passage. At this time, the one-way shut-off valve c is open. The shock absorber oil to the left of the one-way shut-off valve d is absorbed by the energy of the hydraulic motor 3, resulting in relatively low pressure. The shock absorber oil to the right of the one-way shut-off valve d is relatively high pressure. The pressure difference between the two sides causes the one-way shut-off valve d to be in a state of shutting off the flow of shock absorber oil. (See also...) Figure 9As the piston moves towards the lower chamber of cylinder 11, the damping oil in the lower chamber enters the hydraulic motor 3 through the oil passage on the left. At this time, one-way shut-off valve a is in the open state, while one-way shut-off valves b and c shut off the damping oil. One-way shut-off valve d is in the open state, and the damping oil that has completed energy conversion in the hydraulic motor 3 enters the upper chamber of cylinder 11 through the oil passage on the right through one-way shut-off valve d. This process repeats continuously, thus achieving the continuous conversion of some damping energy through the hydraulic motor 3.

[0044] The protruding part of the connecting seat 2 has a cylindrical mounting pit, the opening of which faces the cylinder 11. A cylindrical reversing block 5 is embedded in the mounting pit, and the one-way shut-off valve is disposed within the reversing block 5. Figure 4 , 5 6. Four mounting holes 51 with relatively large inner diameters are provided on the side of the reversing block 5. Each mounting hole 51 contains a set of steel balls 54, a thrust spring 52, and a locking stud (not shown in the figure). The inner end face of the mounting hole 51 is a conical or hemispherical surface. Under the action of the locking stud and the thrust spring 52, the steel balls 54 abut against the inner end face of the mounting hole 51. The elastic force of the thrust spring 52 is relatively small, only playing a supporting and restoring role. The elastic force of the thrust spring 52 can be easily overcome by the damper oil. To achieve a one-way cut-off function, the steel balls 54 are generally pressed against the inner end face of the mounting hole 51 by the pushing of the damper oil. The four mounting holes 51 are connected by oil passages 53 provided in the reversing block 5. The inner diameter of the oil passages 53 is smaller than the inner diameter of the mounting holes 51. There are multiple oil passages 53. Some oil passages 53 are located in the axial direction of the reversing block 5, and some oil passages 53 are located in a direction perpendicular to the axis of the reversing block 5. In order to achieve Figure 8 , 9 The flow direction of the shock absorber oil shown is such that the opening of the oil passage 53 located axially on the reversing block 5 is sealed by a plug on the end face of the reversing block 5. Two through holes are provided on the side of the reversing block 5 corresponding to the positions of the two sets of oil passages, and the shock absorber oil in the two sets of oil passages enters and exits the reversing block 5 from the corresponding through holes.

Claims

1. A dual-mode vibration damping energy conversion damper, comprising a damper that jointly performs vibration damping and a spring sleeved around the outer periphery of the damper, the damper comprising a cylinder and a piston coaxially arranged together, the piston dividing the interior of the cylinder into an upper chamber and a lower chamber, a piston rod coaxially connected to the piston extending to the outer side of one end of the cylinder, a lifting ring fixed to the outer end of the piston rod, and another lifting ring provided at the other end of the cylinder, characterized in that, Also includes: The electromagnetic conversion device includes coils and several permanent magnets that can interact with each other, respectively disposed on the cylinder and the piston; The hydraulic conversion device includes a connecting seat fixed to the other end of the cylinder, and another lifting ring fixed to the connecting seat; the connecting seat extends outward toward the outside of the cylinder, and a hydraulic motor is connected to the extended part of the connecting seat; the hydraulic motor communicates with the upper chamber and the lower chamber respectively through two sets of oil circuits; when the piston moves axially inside the cylinder, it pushes the shock absorber oil through the two sets of oil circuits to realize the unidirectional rotation of the hydraulic motor.

2. The dual-mode shock absorption energy conversion shock absorber according to claim 1, characterized in that, The permanent magnet is mounted on the piston, and the coil is mounted on the outer periphery of the cylinder.

3. The dual-mode shock absorption energy conversion shock absorber according to claim 2, characterized in that, The piston has a split structure, with an annular mounting groove formed on the outer circumference of the piston, and multiple permanent magnets arranged side by side in the mounting groove.

4. The dual-mode shock absorption energy conversion shock absorber according to claim 3, characterized in that, The piston includes a hollow fixed column and at least one fixed body. The fixed column is sleeved on the piston rod, the fixed body is fixedly connected to the piston rod, and the fixed column is fixedly connected to the fixed body.

5. The dual-mode damping energy conversion damper according to claim 4, characterized in that, The fixing body consists of two convex shapes, which are symmetrically arranged. The two ends of the fixing post are fitted onto the convex heads of the fixing body, and the mounting groove is formed between the fixing body and the fixing post.

6. The dual-mode damping energy conversion damper according to any one of claims 1 to 5, characterized in that, The connecting seat is block-shaped, and both sets of oil circuits pass through the connecting seat.

7. The dual-mode damping energy conversion damper according to claim 6, characterized in that, Of the two sets of oil circuits, one set of oil circuits leads directly to the upper cavity; an oil inlet hole communicating with the lower cavity is provided on the piston rod at the position of the lower cavity, and an oil passage hole communicating with the oil inlet hole is provided in the piston rod along its axial direction; a hose is provided in the upper cavity, and the two ends of the hose are respectively connected to the oil passage hole and the connecting seat; the other set of oil circuits passes through the oil inlet hole, the oil passage hole and the hose.

8. The dual-mode shock absorption energy conversion shock absorber according to claim 6, characterized in that, The extension of the connecting seat is equipped with several one-way shut-off valves, which are installed in two sets of oil circuits, so that the shock absorber oil in the upper and lower chambers flows from the shock absorber oil input end of the hydraulic motor through the hydraulic motor under the push of the piston.

9. The dual-mode damping energy conversion damper according to claim 8, characterized in that, The one-way shut-off valve includes two sets, which are connected in parallel between the two oil circuits; one set of one-way shut-off valves cuts off the flow of shock absorber oil in the same direction, and the other set of one-way shut-off valves cuts off the flow of shock absorber oil in the opposite direction; the set of one-way shut-off valves that cuts off the flow of shock absorber oil in the opposite direction is connected to the shock absorber oil input end of the hydraulic motor, and the set of one-way shut-off valves that cuts off the flow of shock absorber oil in the same direction is connected to the shock absorber oil output end of the hydraulic motor.

10. The dual-mode damping energy conversion damper according to claim 9, characterized in that, The connecting seat is provided with an installation pit, and a reversing block is provided in the installation pit. The one-way shut-off valve is located in the reversing block. Two through holes are provided on the side of the reversing block corresponding to the positions of the two sets of oil circuits. The shock absorber oil in the two sets of oil circuits enters and exits the reversing block from the corresponding through holes.

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