Displacement segmentation self-control type magnetorheological damper

Abstract

The invention relates to the technical field of dampers, and discloses a displacement segmentation self-control type magnetorheological damper which comprises a damper body, a piston rod is movably connected with an inner cavity of the damper body in a sleeved mode, a battery pack is fixedly assembled on the outer wall of the damper body, and a push-pull assembly is arranged on the outer wall of the piston rod. A sealing plug is installed on the outer edge of the damper body. According to the displacement segmentation self-control type magnetorheological damper, a push-pull assembly is arranged on the outer wall of a piston rod, and along with front-back movement of the piston rod, the position of a movable frame is transversely adjusted, so that two driving gears are driven by driving plates on the outer walls of the two sides of the movable frame correspondingly; the first driven gear can be driven to rotate under the action of the two driving gears, and the second driving gear can be driven in the process, so that the power generator is driven, and electric quantity is continuously generated and stored in the battery pack.

Description

Technical Field

[0001] This invention relates to the field of damper technology, specifically to a displacement-segmented self-controlled magnetorheological damper. Background Technology

[0002] A magnetorheological damper is a device that provides resistance to motion and reduces the energy of motion. Using damping to dissipate energy and reduce vibration is not a new technology; various types of dampers have long been used in industries such as aerospace, aviation, military, artillery, and automobiles to reduce vibration and dissipate energy.

[0003] Traditional magnetorheological dampers, during their reciprocating motion, control the yield stress of the magnetorheological fluid by adjusting the power supply to the current coil inside the damper. This, in turn, controls the damping force of the piston rod entering the damper, thus achieving a shock-absorbing effect. However, during operation, magnetorheological dampers require frequent power supply to the current coil within a short period to control the shape of the magnetorheological fluid. This results in high energy consumption and a higher operating cost. Summary of the Invention

[0004] This invention provides a displacement segmented self-controlled magnetorheological damper, which solves the problems mentioned in the background art.

[0005] The present invention provides the following technical solution: a displacement segmented self-controlled magnetorheological damper, comprising a damper body, a piston rod movably sleeved in the inner cavity of the damper body, a battery pack fixedly mounted on the outer wall of the damper body, a push-pull assembly provided on the outer wall of the piston rod, a sealing plug installed on the outer edge of the damper body, a drive assembly provided on the outer wall of the sealing plug, a support frame fixedly mounted on the outer wall of the damper body, and a moving assembly provided on the outer wall of the damper body.

[0006] As a preferred embodiment of the present invention: the push-pull assembly includes a support frame, a support rod is fixedly mounted on the outer wall of the support frame, an electric push rod is fixedly mounted on the top of the support frame, a movable frame is movably sleeved on the outer wall of the support rod, a first drive plate is fixedly mounted on the outer wall of the movable frame, and a second drive plate is fixedly mounted on the outer wall of the movable frame.

[0007] As a preferred embodiment of the present invention: the drive assembly includes a mounting plate, a first driven gear is rotatably connected to the outer wall of the mounting plate, a first drive gear is fixedly mounted on the outer wall of the first driven gear, a second drive gear is rotatably connected to the outer wall of the mounting plate, a generator is fixedly mounted on the outer wall of the damper body, a second driven gear is fixedly mounted on the power output shaft of the generator, and a transmission belt is tumbledly connected to the outer wall of the second drive gear.

[0008] As a preferred embodiment of the present invention: the moving component includes a fixed plate, a fixed cylinder is fixedly mounted on the top of the fixed plate, an installation shaft is fixedly mounted in the inner cavity of the fixed cylinder, a drive spring is movably sleeved on the outer wall of the installation shaft, a moving block is movably sleeved on the outer wall of the installation shaft, a vertical plate is mounted on the top of the fixed plate, a trigger plate is mounted in the inner cavity of the vertical plate, and a trigger rod is fixedly mounted on the outer wall of the moving block.

[0009] As a preferred embodiment of the present invention: the outer wall of the first driven gear meshes with the outer wall of the second driven gear, and the outer wall diameter of the first driven gear is larger than the outer wall diameter of the second driven gear; the outer wall of the transmission belt at the end away from the second driving gear is in rolling connection with the outer wall of the first driving gear.

[0010] As a preferred embodiment of the present invention: the outer wall of the movable frame is provided with a movable groove, the outer wall of the support rod passes through the inner cavity of the movable groove, the power output shaft of the electric push rod is connected to the outer wall of the movable frame, and the outer wall of the movable frame passes through the inner cavity of the support frame.

[0011] As a preferred embodiment of the present invention: the two ends of the outer wall of the drive spring are in contact with the inner walls of the moving block and the fixed cylinder respectively, and the static length of the drive spring when it is not under force is greater than the inner cavity length of the fixed cylinder, and the length of the fixed cylinder is greater than the maximum stroke of the piston rod extension and retraction.

[0012] As a preferred embodiment of the present invention: there are four trigger plates, and the four trigger plates are arranged and installed on the outer wall of the upright plate. The outer wall of the moving component is equipped with a controller and a frequency analyzer, and the controller is electrically connected to the frequency analyzer and the trigger plates respectively.

[0013] As a preferred embodiment of the present invention: the outer wall of the first drive gear does not contact the outer wall of the second drive gear, the transmission belt is made of vulcanized rubber, and the generator and the battery pack are electrically connected.

[0014] As a preferred embodiment of the present invention: a support ring and a limiting ring are respectively installed on the outer wall of the support rod, and the support ring is in contact with the bottom of the movable frame, and the limiting ring is in contact with the top of the movable frame.

[0015] The present invention has the following beneficial effects:

[0016] 1. This displacement segmented self-controlled magnetorheological damper uses a push-pull assembly on the outer wall of the piston rod. As the piston rod moves back and forth, the position of the moving frame is adjusted laterally, causing the drive plates on both sides of the moving frame to drive two drive gears respectively. Under the action of the two drive gears, the first driven gear can be rotated, which in turn drives the second drive gear, thereby driving the generator to continuously generate electricity and store it in the battery pack.

[0017] 2. This displacement-segmented self-controlled magnetorheological damper uses an electric push rod installed on the outer wall of the support frame. Under the action of the electric push rod, the moving frame can be driven. This allows the first and second drive plates installed on the outer walls of both sides of the moving frame to drive the first and second drive gears respectively. As the piston rod reciprocates, it can drive the generator in one direction, thereby enabling the generator to continuously generate electricity. This electricity is then supplied to the current coil in the damper body, reducing the amount of electricity that needs to be supplied to the current coil, thus reducing the additional electrical energy required by the equipment and saving operating costs.

[0018] 3. This displacement-segmented self-controlled magnetorheological damper, through a fixed plate set on the outer wall of the damper body and a fixed cylinder set on the outer wall of the fixed plate, can push the moving block and drive the trigger rod to move when the moving frame moves with the piston rod. Under the action of the frequency analyzer, the moving frequency of the moving block is identified, and under the action of the controller, the number of times it contacts the trigger plate is identified, thereby determining its moving stroke. Based on the moving stroke and frequency of the piston rod, the power supply to the current coil in the damper body is controlled, thereby better adjusting the yield stress of the magnetorheological fluid, so that the damper achieves a better shock absorption effect. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a schematic diagram of the damper body structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the piston rod structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the mobile frame structure of the present invention;

[0023] Figure 5 This is a schematic diagram of the drive component structure of the present invention;

[0024] Figure 6 This is a schematic diagram of the push-pull component structure of the present invention;

[0025] Figure 7 This is a schematic diagram of the structure of the mobile component of the present invention;

[0026] Figure 8 This is a schematic diagram of the support frame structure of the present invention.

[0027] In the diagram: 1. Damper body; 2. Piston rod; 3. Battery pack; 4. Push-pull assembly; 5. Sealing plug; 6. Drive assembly; 7. Support frame; 8. Moving assembly;

[0028] 401. Support frame; 402. Support rod; 403. Electric push rod; 404. Moving frame; 405. Drive board No. 1; 406. Drive board No. 2;

[0029] 601. Mounting plate; 602. Driven gear No. 1; 603. Drive gear No. 1; 604. Drive gear No. 2; 605. Generator; 606. Driven gear No. 2; 607. Drive belt;

[0030] 801. Fixed plate; 802. Fixed cylinder; 803. Mounting shaft; 804. Drive spring; 805. Moving block; 806. Vertical plate; 807. Trigger plate; 808. Trigger rod. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figure 1 - Figure 8 A displacement segmented self-controlled magnetorheological damper includes a damper body 1, a piston rod 2 movably sleeved in the inner cavity of the damper body 1, a battery pack 3 fixedly mounted on the outer wall of the damper body 1, a push-pull assembly 4 on the outer wall of the piston rod 2, a sealing plug 5 installed on the outer edge of the damper body 1, a drive assembly 6 on the outer wall of the sealing plug 5, a support frame 7 fixedly mounted on the outer wall of the damper body 1, and a moving assembly 8 on the outer wall of the damper body 1.

[0033] In the above structure, by setting a piston rod 2 in the inner cavity of the damper body 1, filling the inner cavity of the damper body 1 with magnetorheological fluid, and then passing current through the current coil, the magnetism of the current coil is changed under the action of the current, so that the shape of the magnetorheological fluid can be changed under the action of the magnetic field, thereby adjusting the resistance in the inner cavity of the damper body 1, and thus achieving the effect of vibration reduction.

[0034] In a preferred embodiment: the push-pull assembly 4 includes a support frame 401, a support rod 402 is fixedly mounted on the outer wall of the support frame 401, an electric push rod 403 is fixedly mounted on the top of the support frame 401, a movable frame 404 is movably sleeved on the outer wall of the support rod 402, a first drive plate 405 is fixedly mounted on the outer wall of the movable frame 404, and a second drive plate 406 is fixedly mounted on the outer wall of the movable frame 404.

[0035] In the above structure, the support frame 401 installed on the outer wall of the piston rod 2 allows the moving frame 404 to move along with the piston rod 2 as the piston rod 2 moves. This causes the outer wall of the first drive plate 405 to mesh with the outer wall of the first drive gear 603, thereby driving the first drive gear 603. This causes the first drive gear 603 and the first driven gear 602 to rotate synchronously. In turn, the first driven gear 602 drives the second driven gear 606, causing the generator 605 to rotate and generate current.

[0036] In a preferred embodiment: the drive assembly 6 includes a mounting plate 601, a driven gear 602 is rotatably connected to the outer wall of the mounting plate 601, a drive gear 603 is fixedly mounted on the outer wall of the driven gear 602, a second drive gear 604 is rotatably connected to the outer wall of the mounting plate 601, a generator 605 is fixedly mounted on the outer wall of the damper body 1, a second driven gear 606 is fixedly mounted on the power output shaft of the generator 605, and a transmission belt 607 is rollably connected to the outer wall of the second drive gear 604.

[0037] In the above structure, by setting a first drive gear 603 and a second drive gear 604 on the outer wall of the mounting plate 601, when the piston rod 2 is compressed into the inner cavity of the damper body 1, the first drive plate 405 can drive the first drive gear 603. When the piston rod 2 moves out of the inner cavity of the damper body 1, the position of the moving frame 404 is adjusted by the electric push rod 403, so that the outer wall of the second drive plate 406 meshes with the outer wall of the second drive gear 604, thereby driving the outer wall of the second drive gear 604. Under the action of the transmission belt 607 at the bottom of the second drive gear 604, the first drive gear 603 and the first driven gear 602 are driven, and the generator 605 is driven again.

[0038] In a preferred embodiment: the moving component 8 includes a fixed plate 801, a fixed cylinder 802 is fixedly mounted on the top of the fixed plate 801, a mounting shaft 803 is fixedly mounted in the inner cavity of the fixed cylinder 802, a drive spring 804 is movably sleeved on the outer wall of the mounting shaft 803, a moving block 805 is movably sleeved on the outer wall of the mounting shaft 803, a vertical plate 806 is mounted on the top of the fixed plate 801, a trigger plate 807 is mounted in the inner cavity of the vertical plate 806, and a trigger rod 808 is fixedly mounted on the outer wall of the moving block 805.

[0039] In the above structure, by using the movable block 805 set on the top of the mounting shaft 803 and the drive spring 804 movably sleeved on the outer wall of the mounting shaft 803, when the movable frame 404 moves with the piston rod 2, the outer wall of the movable frame 404 will contact the outer wall of the movable block 805, thereby driving the movable block 805 and enabling the movable block 805 to move along the outer wall of the mounting shaft 803. At this time, the trigger rod 808 will move on the outer wall of the vertical plate 806, thereby triggering the trigger plate 807 at the corresponding position.

[0040] In a preferred embodiment: the outer wall of the first driven gear 602 meshes with the outer wall of the second driven gear 606, and the outer wall diameter of the first driven gear 602 is larger than the outer wall diameter of the second driven gear 606. The outer wall of the transmission belt 607 at the end away from the second driving gear 604 is in rolling connection with the outer wall of the first driving gear 603.

[0041] In the above structure, the first drive gear 603, which is set on the outer wall of the mounting plate 601, drives the first drive plate 405 when the piston rod 2 is pressed into the damper body 1. At this time, the generator 605 can be driven directly by the first drive gear 603 and the first driven gear 602. When the piston rod 2 moves out of the inner cavity of the damper body 1, the second drive plate 406 drives the second drive gear 604. Then, the first drive gear 603 is driven by the transmission belt 607, so that the first drive gear 603 drives the first driven gear 602 to rotate, and drives the second driven gear 606 again, so that the second driven gear 606 can rotate in one direction, thereby better driving the generator 605 to generate electricity.

[0042] In a preferred embodiment: the outer wall of the movable frame 404 is provided with a movable groove, the outer wall of the support rod 402 passes through the inner cavity of the movable groove, the power output shaft of the electric push rod 403 is connected to the outer wall of the movable frame 404, and the outer wall of the movable frame 404 passes through the inner cavity of the support frame 7.

[0043] In the above structure, the position of the movable frame 404 can be adjusted by the movable groove opened on the outer wall of the movable frame 404 and the electric push rod 403 set on the top of the support frame 401. This allows the first drive plate 405 and the second drive plate 406 on the outer wall of the movable frame 404 to mesh with the outer walls of the first drive gear 603 and the second drive gear 604 in turn, thereby better driving the first driven gear 602 and the second driven gear 606, so that the generator 605 can generate a continuous amount of electricity during the reciprocating motion of the piston rod 2.

[0044] In a preferred embodiment: the two ends of the outer wall of the drive spring 804 are in contact with the inner walls of the moving block 805 and the fixed cylinder 802 respectively, and the static length of the drive spring 804 when it is not under force is greater than the inner cavity length of the fixed cylinder 802, and the length of the fixed cylinder 802 is greater than the maximum stroke of the piston rod 2.

[0045] In the above structure, the drive spring 804 provided on the outer wall of the mounting shaft 803 and the moving block 805 provided on the outer wall of the mounting shaft 803 can move the moving block 805 to the side of the fixed cylinder 802 close to the moving frame 404 under the action of the drive spring 804. When the moving frame 404 moves upward under the action of the piston rod 2, the moving block 805 will compress the drive spring 804 under the action of the moving frame 404, so that the trigger rod 808 is on the outer wall of the trigger plate 807 and generates an electrical signal. The trigger plate 807 at different positions can generate different electrical signals.

[0046] In a preferred embodiment, there are four trigger plates 807, and the four trigger plates 807 are arranged and installed on the outer wall of the upright plate 806. A controller and a frequency analyzer are installed on the outer wall of the moving component 8, and the controller is electrically connected to the frequency analyzer and the trigger plates 807 respectively.

[0047] In the above structure, multiple trigger plates 807 are installed on the outer wall of the vertical plate 806. When the moving block 805 moves upward under the action of the moving frame 404, the outer wall of the trigger rod 808 will trigger the trigger plate 807 at the corresponding position. The depth of the piston rod 2 retracted into the inner cavity of the damper body 1 is determined by the number of trigger plates 807 triggered by the trigger rod 808. When the trigger rod 808 triggers all four trigger plates 807 multiple times, it can be indicated that the piston rod 2 is compressed into the inner cavity of the damper body 1 to a greater depth within a certain period of time. This indicates that the required damping force is increased, thereby increasing the current supplied to the current coil under the action of the controller, which increases the damping force of the magnetorheological fluid and makes it more suitable for actual vibration reduction.

[0048] In a preferred embodiment: the outer wall of the first drive gear 603 does not contact the outer wall of the second drive gear 604, the transmission belt 607 is made of vulcanized rubber, and the generator 605 is electrically connected to the battery pack 3.

[0049] In the above structure, the movable frame 404 is provided on the outer wall of the piston rod 2, and the first drive plate 405 and the second drive plate 406 are provided on the outer wall of the movable frame 404. During the reciprocating motion of the piston rod 2, the movable frame 404 is driven, and the first drive gear 603 and the second drive gear 604 are driven by the movable frame 404. The first drive gear 603 and the second drive gear 604 drive the first driven gear 602, and drive the generator 605 to rotate, generating a continuous supply of electricity. This electricity can be used to supply the permanent magnet, thereby achieving better control of the piston rod 2.

[0050] In a preferred embodiment: a support ring and a limiting ring are respectively installed on the outer wall of the support rod 402, and the support ring contacts the bottom of the movable frame 404, and the limiting ring contacts the top of the movable frame 404.

[0051] In the above structure, the support ring and the limiting ring provided on the outer wall of the support rod 402 can support the outer wall of the moving frame 404 under the action of the support ring and the limiting ring, so that the moving frame 404 can move better under the action of the electric push rod 403. This allows the outer walls of the first drive plate 405 and the second drive plate 406 to mesh with the outer walls of the first drive gear 603 and the second drive gear 604 respectively, thereby driving the generator 605.

[0052] Working principle: During use, when the piston rod 2 is under pressure, it contracts into the inner cavity of the damper body 1. During this movement, power is supplied to the current coil within the damper body 1. Since the inner cavity of the damper body 1 is filled with magnetorheological fluid, the current changes the magnetism of the current coil, causing the shape of the magnetorheological fluid to change under the influence of the magnetic field. This prevents the piston rod 2 from moving into the inner cavity of the damper body 1. As the piston rod 2 contracts into the inner cavity, its outer wall drives the movement of the moving frame 404. At this time, the outer wall of the first drive plate 405 meshes with the outer wall of the first drive gear 603. As piston rod 2 moves, the moving frame 404 and the first drive plate 405 drive the first drive gear 603, causing the first drive gear 603 to rotate the first driven gear 602. Under the action of the first driven gear 602, the first driven gear 602 drives the second driven gear 606, causing the generator 605 to generate electricity. Then, when piston rod 2 moves outward, the electric push rod 403 rapidly adjusts the moving frame 404 laterally, causing the outer wall of the moving frame 404 to move within the inner cavity of the support frame 7. This causes the outer wall of the first drive plate 405 to separate from the outer wall of the first drive gear 603, and the outer wall of the second drive plate 406 to adhere to the outer wall of the second drive gear 604. Subsequently, as piston rod 2 moves towards the damper body 1... When the inner cavity moves outward, the outer wall of the second drive plate 406 drives the second drive gear 604, causing the second drive gear 604 to rotate. At this time, under the action of the second drive gear 604 and the transmission belt 607, the first drive gear 603 and the first driven gear 602 are driven, which in turn drives the second driven gear 606 and the generator 605 to rotate. During the reciprocating motion of the piston rod 2, the outer walls on both sides of the moving frame 404 drive the first drive gear 603 and the second drive gear 604 respectively, which can cause the second driven gear 606 to rotate in one direction. This allows the generator 605 to continuously generate electricity and store it in the battery pack 3, so as to supply current to the inner cavity of the damper body 1. The coil is powered, and as the piston rod 2 reciprocates within the damper body 1, the moving frame 404 moves accordingly. When the moving block 805 moves upward under the action of the moving frame 404, the outer wall of the trigger rod 808 triggers the corresponding trigger plate 807. The depth to which the piston rod 2 retracts into the damper body 1 is determined by the number of trigger plates 807 triggered by the trigger rod 808. When the trigger rod 808 triggers all four trigger plates 807 multiple times, it indicates that the piston rod 2 has been compressed into the damper body 1 to a greater depth over a period of time, thus indicating that the required damping force is increasing. Consequently, under the action of the controller, the current supplied to the current coil is increased, thereby increasing the damping force of the magnetorheological fluid.Furthermore, the vibration environment is determined based on the extension and retraction stroke of the piston rod 2. This allows for more precise power supply to the current coil under the control of the controller, thereby better controlling the yield stress of the magnetorheological fluid within the damper body 1 and achieving a better damping effect.

[0053] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0054] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A displacement segmented self-controlled magnetorheological damper, comprising a damper body (1), characterized in that: The inner cavity of the damper body (1) is movably sleeved with a piston rod (2); the outer wall of the damper body (1) is fixedly equipped with a battery pack (3); the outer wall of the piston rod (2) is provided with a push-pull assembly (4); a closing plug (5) is installed on the outer edge of the damper body (1); the outer wall of the closing plug (5) is provided with a driving assembly (6); the outer wall of the damper body (1) is fixedly equipped with a support frame (7); and the outer wall of the damper body (1) is provided with a moving assembly (8).

2. The displacement segmented self-controlled magnetorheological damper according to claim 1, characterized in that: The push-pull assembly (4) comprises a support frame (401), the outer wall of the support frame (401) is fixedly equipped with a support rod (402), the top of the support frame (401) is fixedly equipped with an electric push rod (403), the outer wall of the support rod (402) is movably sleeved with a moving frame (404), the outer wall of the moving frame (404) is fixedly equipped with a first drive plate (405), and the outer wall of the moving frame (404) is fixedly equipped with a second drive plate (406).

3. The displacement segmented self-controlled magnetorheological damper according to claim 1, characterized in that: The driving assembly (6) comprises a mounting plate (601), the outer wall of the mounting plate (601) is rotatably connected to a first driven gear (602), the outer wall of the first driven gear (602) is fixedly mounted with a first driving gear (603), the outer wall of the mounting plate (601) is rotatably connected to a second driving gear (604), the outer wall of the damper body (1) is fixedly mounted with a generator (605), the power output shaft of the generator (605) is fixedly mounted with a second driven gear (606), and the outer wall of the second driving gear (604) is rollingly connected with a transmission belt (607).

4. The displacement segmented self-controlled magnetorheological damper according to claim 1, characterized in that: The moving assembly (8) comprises a fixed plate (801), a fixed cylinder (802) is fixedly mounted on the top of the fixed plate (801), a mounting shaft (803) is fixedly mounted in the inner cavity of the fixed cylinder (802), a driving spring (804) is movably sleeved on the outer wall of the mounting shaft (803), a moving block (805) is movably sleeved on the outer wall of the mounting shaft (803), a vertical plate (806) is mounted on the top of the fixed plate (801), a trigger plate (807) is mounted in the inner cavity of the vertical plate (806), and a trigger rod (808) is fixedly mounted on the outer wall of the moving block (805).

5. The displacement segmented self-controlled magnetorheological damper according to claim 3 is characterized in that: The outer wall of the first driven gear (602) is meshed with the outer wall of the second driven gear (606), and the outer wall diameter of the first driven gear (602) is larger than the outer wall diameter of the second driven gear (606). The outer wall of the transmission belt (607) away from the end of the second driving gear (604) is rollingly connected with the outer wall of the first driving gear (603).

6. The displacement segmented self-controlled magnetorheological damper according to claim 2, characterized in that: The outer wall of the movable frame (404) is provided with a movable groove, the outer wall of the support rod (402) passes through the inner cavity of the movable groove, the power output shaft of the electric push rod (403) is connected to the outer wall of the movable frame (404), and the outer wall of the movable frame (404) passes through the inner cavity of the support frame (7).

7. The displacement segmented self-controlled magnetorheological damper according to claim 4, characterized in that: The two ends of the outer wall of the driving spring (804) are in contact with the inner wall of the moving block (805) and the fixed cylinder (802) respectively, and the static length of the driving spring (804) without force is greater than the inner cavity length of the fixed cylinder (802), and the length of the fixed cylinder (802) is greater than the maximum stroke of the piston rod (2).

8. The displacement segmented self-controlled magnetorheological damper according to claim 4, characterized in that: There are four trigger plates (807), and the four trigger plates (807) are arranged and installed on the outer wall of the vertical plate (806). The outer wall of the moving component (8) is installed with a controller and a frequency analyzer, and the controller is electrically connected to the frequency analyzer and the trigger plate (807) respectively.

9. The displacement segmented self-controlled magnetorheological damper according to claim 3, characterized in that: The outer wall of the first driving gear (603) does not contact the outer wall of the second driving gear (604), the transmission belt (607) is made of vulcanized rubber, and the generator (605) is electrically connected to the battery pack (3).

10. The displacement segmented self-controlled magnetorheological damper according to claim 2, characterized in that: A supporting ring and a limiting ring are respectively installed on the outer wall of the supporting rod (402), and the supporting ring contacts the bottom of the moving frame (404), and the limiting ring contacts the top of the moving frame (404).

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