Reciprocating Electrorheological Damper

Abstract

The present invention provides a reciprocating electrorheological damper, which includes a cylinder body, a piston rod, a piston and an isolation mechanism, wherein one end of the cylinder body is open, and a connection portion connected to an external component is constructed at the other end of the cylinder body, one end of the piston rod is inserted into the cylinder body, and a sealing mechanism located between the cylinder body and the piston rod is fixed at the open end of the cylinder body, the piston is fixed to the insertion end of the piston rod, a damping channel running through the two ends of the piston is constructed on the piston or between the piston and the cylinder body, and an electrode unit for forming an electric field in the damping channel is provided on the piston, the isolation mechanism is fixed in the cylinder body adjacent to the piston, and the isolation mechanism is constructed to be elastically deformable in response to the sliding of the piston in the cylinder body. The reciprocating electrorheological damper described in the present invention has a simple structure, can obtain semi-active control of the vibration reduction system in response to external excitation, and has good practicality.

Description

Technical Field

[0001] The invention relates to the technical field of vibration reduction dampers, in particular to a reciprocating electrorheological damper. Background Art

[0002] In the prior art, most dampers use hydraulic dampers, which all achieve damping effect by dissipating energy through the throttle hole through the damping fluid. The damping fluid flow rate can be changed by adjusting the size of the throttle hole to adjust the damping coefficient of the damper. At the same time, the size of the damper output damping will also change with the change of the damper stroke. The output damping force of the existing hydraulic damper in response to the external vibration load is passive, which reduces the buffering performance and damping effect of the damper to a certain extent. For this reason, the electromagnetic damper as a new shock absorber structure has gradually been used. However, the existing electromagnetic damper also has the disadvantages of complex structure, the need to actively control the motor in the shock absorber, and high equipment maintenance requirements and costs.

[0003] Electrorheological fluid is an intelligent material whose rheological properties such as viscosity and plasticity change dramatically under the action of an external electric field. It can instantly change from a free-flowing liquid to a semi-solid under the action of an external electric field to present a controllable yield strength, and this change is reversible with the change of the electric field. Therefore, electrorheological dampers using electrorheological fluid as damping fluid are increasingly gaining attention from researchers. The controlled parameter of the electrorheological damper is mainly the viscosity of the electrorheological fluid. With the change of the electric field strength, the electrorheological fluid can achieve a continuously changing viscosity value, so that a continuously adjustable output damping force can be obtained. At the same time, combining the electric field control in the damper with sensors and controllers can also realize semi-active control of the vibration reduction system, and can obtain a damping effect that matches the change of external vibration excitation. As a new type of hydraulic damper, the electrorheological damper has a good application prospect due to its adjustable damping force, strong controllability, and good responsiveness. Therefore, it is undoubtedly of great practical significance to develop an electrorheological damper suitable for application. Summary of the invention

[0004] In view of this, the present invention aims to provide a reciprocating electrorheological damper that can perform buffering and vibration reduction in response to external vibration excitation and has good practicality.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] A reciprocating electrorheological damper, comprising:

[0007] A cylinder body, one end of which is open and the other end of which is provided with a connection portion connected to an external component;

[0008] A piston rod, one end of which is inserted into the cylinder body from the open end of the cylinder body, and a sealing mechanism located between the cylinder body and the piston rod is fixed at the open end of the cylinder body;

[0009] A piston is fixedly connected to the insertion end of the piston rod and slidably disposed in the cylinder body, a damping channel penetrating the piston and extending between the two ends along the axial direction of the cylinder body is constructed in the piston or between the piston and the cylinder body, and an electrode unit connected to an external circuit to form an electric field in the damping channel is disposed on the piston;

[0010] An isolation mechanism is adjacent to the piston and fixed in the cylinder body. Due to the separation of the isolation mechanism, an air cavity filled with high-pressure gas is formed in the cylinder body on one side of the isolation mechanism, and an oil injection cavity connected by the damping channel and filled with electrorheological fluid is formed on both sides of the piston. The isolation mechanism is constructed to have elastic deformation in response to the sliding of the piston in the cylinder body.

[0011] Furthermore, the damping channel is constructed between the piston and the cylinder body, an insulating bushing sleeved on the piston rod is provided in the piston, and the electrode unit is a built-in electrode fixed on the insulating bushing and inserted into the damping channel.

[0012] Furthermore, a wire threading channel communicating with each other is formed in the insulating bushing and the piston rod, and the built-in electrode is electrically connected to the outside through a wire inserted in the wire threading channel.

[0013] Furthermore, the isolation mechanism includes an elastic diaphragm fixed in the cylinder body through an annular frame, and a sealing surface is formed on the elastic diaphragm, which is in contact with the cylinder body due to the support of the diaphragm frame and extends along the axial direction of the cylinder body.

[0014] Furthermore, the annular skeleton is located in the air cavity, and the radial middle portion of the elastic diaphragm is configured to be concave toward one side of the annular skeleton.

[0015] Furthermore, the sealing mechanism includes a sealing seat sleeved on the piston rod and fixed in the open end of the cylinder body, a sealing ring located between the sealing seat and the cylinder body, and an oil seal arranged on the sealing seat at the open end of the cylinder body and sleeved on the piston rod; and also includes an electrorheological fluid reflux unit arranged in the sealing seat to form a one-way conduction between the oil seal and the oil filling chamber.

[0016] Furthermore, the electrorheological fluid reflux unit includes a reflux channel formed in the sealing seat and connected between the oil seal and the oil filling chamber, and a one-way valve component located in the reflux channel, and the one-way valve component is constructed to withstand the pressure in the oil filling chamber and block the reflux channel.

[0017] Furthermore, the one-way valve member is a Y-shaped sealing ring.

[0018] Furthermore, an oil scraper ring arranged around the piston rod is provided in the sealing seat.

[0019] Furthermore, adjacent to the oil scraper ring, an inner lining arranged around the piston rod is provided in the sealing seat.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] The reciprocating electrorheological damper of the present invention is filled with electrorheological fluid and provided with electrode units that can form an electric field in the damping channel. When in use, the intensity of the electric field can be changed by controlling the voltage of the electrode unit according to different external vibration excitations, thereby changing the flow characteristics of the electrorheological fluid in the damping channel, so that not only can the damping force be output through the flow of the electrorheological fluid between the oil filling chambers on both sides, but the output damping force can also be adjusted, so as to obtain a better damping control effect.

[0022] At the same time, the present invention adopts an elastically deformable isolation mechanism fixed in the cylinder body, which can not only improve the reliability of the sealing isolation between the air chamber and the oil injection chamber by the static sealing form, but also because there is no friction between the isolation sealing part and the cylinder body, it is more suitable for electrorheological fluid with particles and can also improve the adaptability to electrorheological fluid. Furthermore, when the piston rod moves, the volume compensation of the oil injection chamber and the air chamber can be achieved by relying on the elastic deformation of the isolation mechanism, which can make the damper have no starting friction and can also improve the response sensitivity of the damper.

[0023] In addition, the damper of the present invention is an integral structure composed of a cylinder body, a piston rod, a piston having a damping channel and an electrode unit, an isolation mechanism, a sealing mechanism, etc. Compared with the existing electromagnetic damper, its structure is simple, and it can also obtain semi-active control of the vibration reduction system in response to external excitation, and has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0025] Figure 1 It is a structural schematic diagram of a reciprocating electrorheological damper according to an embodiment of the present invention;

[0026] Figure 2 It is a structural schematic diagram of another arrangement form of the damping channel according to an embodiment of the present invention;

[0027] Figure 3 It is a structural schematic diagram of the isolation mechanism according to an embodiment of the present invention;

[0028] Figure 4 It is a structural schematic diagram of the sealing mechanism according to an embodiment of the present invention;

[0029] Figure 5 for Figure 1 The structural diagram of part A in the figure;

[0030] Description of reference numerals:

[0031] 1-cylinder barrel, 2-sealing head, 3-connecting hole, 4-piston rod, 5-threading channel, 6-connecting sleeve, 7-lead hole, 8-piston front cover, 9-piston housing, 10-insulating bushing, 11-built-in electrode, 12-nut, 13-oil filling chamber, 14-air chamber, 15-elastic diaphragm, 151-sealing surface, 152-recessed part, 16-annular skeleton, 161-butting surface, 162-card Grooving, 163-groove, 17-wire, 18-inflating nozzle, 181-air inlet, 19-external sealing seat, 20-oil seal, 201-oil seal skeleton, 21-inner sealing seat, 211-return hole, 212-notch, 22-oil scraper ring, 23-elastic sealing ring, 24-retaining ring, 25-lining, 26-Y-type sealing ring, 27-sealing ring, 28-sealing ring, 100-protrusion. DETAILED DESCRIPTION

[0032] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0033] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0034] This embodiment relates to a reciprocating electrorheological damper, such as Figure 1 As shown in , the overall structure of the damper includes a cylinder body with an opening at one end, a piston rod 4 inserted in the cylinder body at one end, and a piston connected to the insertion end of the piston rod 4, and also includes an isolation mechanism arranged in the cylinder body adjacent to the piston, and a sealing mechanism located between the open end of the cylinder body and the piston rod 4. Among them, due to the separation of the above isolation mechanism, an air cavity 14 located on one side of the isolation mechanism and an oil injection cavity 13 located on both sides of the piston are formed in the cylinder body, and a damping channel for connecting the oil injection cavities 13 on both sides is also provided between the piston and the cylinder body, and an electrode unit that can form an electric field in the damping channel is also provided in the piston.

[0035] In this embodiment, the oil filling chambers 13 on both sides and the damping channels connecting the oil filling chambers 13 on both sides are filled with electrorheological fluid, and the air chamber 14 is filled with high-pressure gas. In terms of specific structure, the cylinder body of this embodiment is composed of a steel cylinder barrel 1 and a head 2 sealed at one end of the cylinder barrel 1. A connecting portion for connecting with an external component is formed on the head 2, and the connecting portion is specifically a connecting hole 3 set on the head 2. An inner liner tube is also set in the connecting hole 3 to reduce the wear of the inner wall of the connecting hole 3. In addition, an air filling nozzle 18 for filling gas into the air chamber 14 is also connected to the head 2. The air filling nozzle 18 is connected to the air chamber 14 via an air inlet hole 181 set in the head 2, and the open end of the cylinder body mentioned above is also the end of the cylinder barrel 1 that is not connected to the head 2, and the piston rod 4 is inserted into the cylinder barrel 1 from this end.

[0036] The piston connected to the insertion end of the piston rod 4 in the present embodiment specifically includes a piston front cover 8 which is sleeved on the piston rod 4 and limited at the axial shoulder of the piston rod 4, an insulating bushing 10 which is stacked on the piston front cover 8 and is also sleeved on the piston rod 4, and a piston housing 9 which is located on the other side of the insulating bushing 10 relative to the piston front cover 8. Among them, the above-mentioned electrode unit is a built-in electrode 11 which is fixedly sleeved on the outer peripheral side of the insulating bushing 10, and in terms of specific structure, the insulating bushing 10 is arranged symmetrically along the axial direction of the piston rod 4, and the inner side of the built-in electrode 11 is clamped between the two insulating bushings 10, and at the same time, a nut 12 is also screwed on the end of the piston rod 4 outside the piston housing 9. By tightening the nut 12, the two insulating bushings 10 are clamped between the piston housing 9 and the piston front cover 8, so that the built-in electrode 11 can be fixed.

[0037] Still Figure 1 As shown in the figure, in this embodiment, a threading hole arranged along the axial direction is provided in the piston rod 4, and the end of the threading hole close to the piston is connected to the gap between the two insulating bushings 10. The gap and the threading hole in the piston rod 4 constitute a threading channel 5 for the wire 17 to be passed through, and the built-in electrode 11 is electrically connected to the outside through the wire 17 to supply power to the built-in electrode 11. In this embodiment, a connecting sleeve 6 for connecting to an external component is also connected to the end of the piston rod 4 located outside the cylinder barrel 1, and a lead-out hole 7 is also opened on the connecting sleeve 6 close to the end of the piston rod 4, and the lead-out hole 7 is for leading out the wire 17.

[0038] In this embodiment, a notch is provided on the outer peripheral side of the piston housing 9 that is abutted against the inner wall of the cylinder barrel 1. The notch is arranged along the axial direction of the cylinder barrel 1 and penetrates the piston housing 9. There may be a plurality of notches provided around the piston housing 9 to form a gap between the piston housing 9 and the inner wall of the cylinder barrel 1. In addition, the diameter of the piston front cover 8 of this embodiment is also set to be smaller than the inner diameter of the cylinder barrel 1, so that a gap is also left between the edge of the piston front cover 8 and the inner wall of the cylinder barrel 1.

[0039] Thus, the aforementioned damping channel between the piston and the cylinder body is formed through the communication of the gaps formed respectively between the piston housing 9 and the inner wall of the cylinder barrel 1, and between the piston front cover 8 and the inner wall of the cylinder barrel 1, namely, between the piston housing 9, the insulating bushing 10, the piston front cover 8 and the inner wall of the cylinder barrel 1. The damping channel penetrates the two ends of the piston along the axial direction of the cylinder barrel 1 to communicate with the oil injection chambers 13 on both sides, and the built-in electrode 11 fixed on the insulating bushing 10 is inserted into the damping channel to be arranged opposite to the inner wall of the cylinder barrel 1, and then when the built-in electrode 11 is energized, a parallel electric field is formed in the damping channel between the built-in electrode 11 and the steel cylinder barrel 1.

[0040] In this embodiment, in order to prevent the electrorheological fluid from entering the piston rod 4, a sealing ring is provided between the insulating bushing 10 and the piston rod 4, and between the built-in electrode 11 and the insulating bushing 10. In addition, in addition to making the piston adopt the above structure and making the damping channel located between the piston and the inner wall of the cylinder 1, in this embodiment, Figure 2 As shown in , the piston housing 9 can also adopt a structure with a "concave" cross-section. In this case, through holes are arranged in the piston housing 9 and the piston front cover 8, and the through holes constitute a damping channel located in the piston for connecting the oil filling chambers 13 on both sides. The built-in electrode 11 is still inserted into the damping channel, and when the built-in electrode 11 is energized, a parallel electric field can be formed in the damping channel between the built-in electrode 11 and the steel piston housing 9.

[0041] In this embodiment, the isolation mechanism located in the cylinder 1 is designed to produce elastic deformation in response to the sliding of the piston in the cylinder 1. Figure 3 Combined with Figure 1 As shown, the isolation mechanism includes an elastic diaphragm 15 disposed in the cylinder 1, and the elastic diaphragm 15 is fixed in the cylinder 1 by an annular frame 16. The annular frame 16 is inserted into the cylinder 1 by an interference fit through an abutment surface 161 at one end of its outer peripheral wall, and a groove 163 is provided on the abutment surface 161 to facilitate the insertion of the annular frame 16. Adjacent to the abutment surface 161, the other end of the annular frame 16 is necked, and an inwardly concave clamping groove 162 is provided on the outer peripheral wall of the necked end, and the edge of the elastic diaphragm 15 is clamped in the clamping groove 162.

[0042] In order to facilitate the stable installation in the card slot 162, the edge of the elastic diaphragm 15 located at the card slot 162 is set to have a circular cross-section. Figure 3As shown, a sealing surface 151 is formed on the elastic diaphragm 15, which can abut against the inner wall of the cylinder 1 due to the support of the annular skeleton 16, and the sealing surface 151 extends along the axial direction of the cylinder 1. The design of the sealing surface 151 can not only ensure the sealing between the elastic diaphragm 15 and the cylinder 1, but also reduce the quality requirements for the inner wall surface of the cylinder 1 due to the surface sealing form, so as to reduce the processing cost of the cylinder 1.

[0043] In the specific assembly of this embodiment, the annular skeleton 16 is located in the air cavity 14, and the radial middle part of the elastic diaphragm 15 is also recessed toward one side of the annular skeleton 16 to form a recessed portion 152 embedded in the inner hole of the annular skeleton 16. At the same time, the thickness of the center of the recessed portion 152 is also set to be greater than the thickness of its edge. This embodiment adopts a static seal isolation mechanism composed of the annular skeleton 16 and the elastic diaphragm 15. On the one hand, it has reliable sealing, no friction loss between the cylinder 1, stable structure, and is more suitable for electrorheological fluid with particles to improve the adaptability to electrorheological fluid; on the other hand, the volume compensation of the air cavity 14 and the oil injection cavity 13 is achieved by the deformation of the elastic diaphragm 15, which can make the damper have no starting friction and make it more sensitive.

[0044] The structure of the sealing mechanism in this embodiment is as follows: Figure 4 As shown in , it specifically includes a sealing seat composed of an outer sealing seat 19 and an inner sealing seat 21, which is sleeved on the piston rod 4 and fixed in the open end of the cylinder 1. The outer sealing seat 19 and the inner sealing seat 21 can both be steel structures, and the outer sealing seat 19 is arranged close to the open end of the cylinder 2, and the inner sealing seat 21 is stacked on one side of the outer sealing seat 19. A sealing ring 27 is also arranged between the outer sealing seat 19 and the inner sealing seat 21, and a sealing ring 28 is also arranged between the inner sealing seat 21 and the cylinder 1. At the same time, an oil seal 20 is also arranged at the open end of the cylinder 1, which is sleeved on the piston rod 4 and embedded in the end of the outer sealing seat 19. The oil seal 20 contains an oil seal skeleton 201 to ensure the stability of the oil seal 20 structure, and the oil seal 20 can use existing components.

[0045] The sealing mechanism of this embodiment further includes an electrorheological fluid reflux unit disposed in the above-mentioned sealing seat, and the electrorheological fluid reflux unit can constitute a one-way conduction between the oil seal 20 and the oil filling chamber 13, so that the electrorheological fluid entering the oil seal 20 can flow back into the oil filling chamber 13. In detail, the electrorheological fluid reflux unit includes a reflux channel formed in the sealing seat to connect the oil filling chamber 13 and the oil seal 20, and the reflux channel is specifically composed of a reflux hole 211 opened on the inner sealing seat 21, and a gap between the inner sealing seat 21 and the outer sealing seat 19 that penetrates the reflux hole 211, and the oil seal 20 is located on one side of the gap, and a space for storing electrorheological fluid is also formed at the oil seal 20.

[0046] A one-way valve is also provided in the reflux channel, and the one-way valve can bear the pressure from the oil injection chamber 13, thereby blocking the reflux channel, so that when the pressure in the oil injection chamber 13 is removed, the one-way valve can conduct the reflux channel to realize the reflux of the electrorheological fluid into the oil injection chamber 13. In this embodiment, the one-way valve is specifically a Y-shaped sealing ring 26 provided in the gap between the outer sealing seat 19 and the inner sealing seat 21. Of course, in addition to the Y-shaped sealing ring 26, the one-way valve can also be other existing one-way valve structures that can realize one-way conduction.

[0047] In this embodiment, an oil scraper ring 22 arranged around the piston rod 4 is further provided in the inner seal seat 21. The oil scraper ring 22 is supported by an elastic seal ring 23 located on one side thereof and is positioned by a retaining ring 24 clamped in the inner seal seat 21. In addition to the oil scraper ring 22, in this embodiment, an inner liner 25 arranged adjacent to the oil scraper ring 22 and sleeved on the piston rod 4 is also provided in the inner seal seat 21. The oil scraper ring 22 can be made of existing components, and the inner liner 25 can be made of SF-1 material. The provision of the oil scraper ring can scrape off particles on the outer peripheral wall of the piston rod 4 when the piston rod 4 moves upward, thereby protecting the oil seal 20. In addition, through the design of the electrorheological fluid reflux unit, the high-voltage electrorheological fluid entering the oil seal 20 can also be refluxed when the piston rod 4 moves downward, thereby also achieving the effect of protecting the oil seal 20.

[0048] When assembling the current damper of this embodiment, first install the sealing mechanism into the open end of the cylinder 1, and then insert it into the cylinder 1. Figure 5 As shown, the notch 212 at the end of the inner sealing seat 21 is inserted into place after it abuts against the protrusion 100 on the inner wall of the cylinder 1, and then the open end of the cylinder 1 is riveted to fix the sealing mechanism. Next, the piston rod 4 is inserted into the cylinder 1 through the sealing mechanism, and the insertion end of the piston rod 4 is first extended from the other end of the cylinder 1 to connect the piston. After the piston is connected, the piston rod 4 is retracted into the cylinder 1 and filled with electrorheological fluid. Then the isolation mechanism is embedded and fixed in the cylinder 1, and the head 2 is installed and welded to the cylinder 1. Finally, high-pressure gas is filled through the inflation nozzle 18 on the head 2 to complete the entire assembly.

[0049] When the electrorheological damper of this embodiment is in use, the damping force is generated by the flow of electrorheological fluid through the damping channel between the oil filling chambers 13 on both sides, and according to different external excitations, the electric field strength in the damping channel can be changed by controlling the voltage of the built-in electrode 11, thereby changing the flow characteristics of the electrorheological fluid in the damping channel, so that the damper can adjust the damping force in response to different external excitations, thereby obtaining a better damping and vibration reduction effect, and has good practicality.

[0050] 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 spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A reciprocating electrorheological damper, characterized in that: include: A cylinder body, one end of which is open and the other end of which is provided with a connection portion connected to an external component; A piston rod, one end of which is inserted into the cylinder body from the open end of the cylinder body, and a sealing mechanism located between the cylinder body and the piston rod is fixed at the open end of the cylinder body; A piston is fixedly connected to the insertion end of the piston rod and slidably disposed in the cylinder body, a damping channel penetrating the piston and extending between the two ends along the axial direction of the cylinder body is constructed in the piston or between the piston and the cylinder body, and an electrode unit connected to an external circuit to form an electric field in the damping channel is disposed on the piston; an isolation mechanism, adjacent to the piston and fixed in the cylinder body, wherein due to the separation of the isolation mechanism, an air cavity filled with high-pressure gas located on one side of the isolation mechanism and an oil injection cavity filled with electrorheological fluid located on both sides of the piston and connected by the damping channel are formed in the cylinder body, and the isolation mechanism is constructed to have elastic deformation in response to the sliding of the piston in the cylinder body; The isolation mechanism includes an elastic diaphragm fixed in the cylinder body through an annular frame, and a sealing surface is formed on the elastic diaphragm, which is in contact with the cylinder body due to the support of the annular frame and extends along the axial direction of the cylinder body. The annular frame is located in the air cavity, and the radial middle part of the elastic diaphragm is arranged to be concave toward one side of the annular frame to form a concave part embedded in the inner hole of the annular frame, and the thickness of the center of the concave part is greater than the thickness of its edge; The sealing mechanism includes a sealing seat composed of an outer sealing seat and an inner sealing seat, which is sleeved on the piston rod and fixed in the open end of the cylinder body, a sealing ring located between the inner sealing seat and the cylinder body, and an oil seal embedded in the end of the outer sealing seat at the open end of the cylinder body and sleeved on the piston rod; and also includes an electrorheological fluid reflux unit arranged in the sealing seat to form a one-way conduction between the oil seal and the oil injection chamber; The electrorheological fluid reflux unit comprises a reflux channel formed in the sealing seat and communicating between the oil seal and the oil injection chamber, and a one-way valve member located in the reflux channel, and the reflux channel is composed of a reflux hole opened on the inner sealing seat, and a gap between the inner sealing seat and the outer sealing seat that is connected to the reflux hole, the oil seal is located on one side of the gap, and a space for storing electrorheological fluid is formed at the oil seal; the one-way valve member is constructed to withstand the pressure in the oil injection chamber and block the reflux channel, and the one-way valve member is a Y-shaped sealing ring; When assembling the reciprocating electrorheological damper, the sealing mechanism is first installed into the open end of the cylinder body, and the notch at the end of the inner sealing seat abuts against the protrusion on the inner wall of the cylinder body during insertion and is then installed into place. The sealing mechanism is then riveted to fix the open end of the cylinder body, and then the piston rod is inserted into the cylinder body through the sealing mechanism, and the insertion end of the piston rod is first extended from the other end of the cylinder body to connect the piston. After the piston is connected, the piston rod is retracted into the cylinder body and filled with electrorheological fluid. Then the isolation mechanism is embedded and fixed in the cylinder body, and the end cap is installed and welded to the cylinder body, and finally high-pressure gas is filled through the inflation nozzle on the end cap.

2. The reciprocating electrorheological damper according to claim 1, characterized in that: The damping channel is constructed between the piston and the cylinder body. An insulating bushing sleeved on the piston rod is arranged in the piston. The electrode unit is a built-in electrode fixed on the insulating bushing and inserted into the damping channel.

3. The reciprocating electrorheological damper according to claim 2, characterized in that: A connecting wire passage is formed in the insulating bushing and the piston rod, and the built-in electrode is electrically connected to the outside through a wire inserted in the wire passage.

4. The reciprocating electrorheological damper according to claim 1, characterized in that: An oil scraper ring arranged around the piston rod is arranged in the sealing seat.

5. The reciprocating electrorheological damper according to claim 4, characterized in that: Adjacent to the oil scraper ring, an inner liner arranged around the piston rod is arranged in the sealing seat.

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