A magnetorheological damper

Abstract

The present invention belongs to the technical field of magnetorheological dampers, and specifically discloses a magnetorheological damper, comprising a shell and a rod body, wherein the lower end of the rod body penetrates the shell and extends to the interior of the shell, and a piston is fixedly connected to the bottom of the rod body, and the surface of the piston is provided with evenly distributed through holes. By arranging an anti-sedimentation mechanism, the sedimentation of magnetic particles in the magnetorheological fluid can be effectively reduced under the action of the anti-sedimentation mechanism, and the magnetorheological fluid can be timely dissipated and cooled to reduce the influence of heat generated by friction on it. By utilizing the cold energy and heat energy generated by the cold surface and the hot surface of a semiconductor refrigeration plate, the cold energy is utilized to dissipate the heat of the magnetorheological fluid to reduce the influence of heat on it, and the heat energy is utilized to heat the air inside a power cavity to form an air pressure difference between the power cavity and the drive cavity, so that the turntable and the blades can be driven to stir the magnetorheological fluid under the action of a stirring component to reduce its sedimentation.

Description

Technical Field

[0001] The invention belongs to the technical field of magnetorheological dampers, and in particular relates to a magnetorheological damper. Background Art

[0002] With the development of science and technology and the improvement of production level, a new type of intelligent material, magnetorheological fluid, has been widely used. Magnetorheological fluid is a suspension composed of tiny soft magnetic particles with high magnetic permeability and low magnetic hysteresis and non-magnetic conductive fluid. Magnetorheological fluid exhibits low viscosity Newtonian fluid characteristics under zero magnetic field conditions and high viscosity and low fluidity Bingham body characteristics under strong magnetic field. By using the principle that the mechanical properties of magnetorheological fluid can be controlled under the action of magnetic field, good research results and technical applications have been achieved in mechanical vibration, automobile suspension, civil engineering and other occasions where vibration reduction is required.

[0003] The existing magnetorheological damper has the following problems during use:

[0004] 1. Since the density of magnetic particles in magnetorheological fluid is generally 7-8 g / cm3, which is 7-8 times that of the carrier fluid, magnetic particles dispersed in the carrier fluid are prone to sedimentation, which seriously affects the rheological properties of the magnetorheological fluid;

[0005] 2. The heat generated by friction after long-term use causes the temperature of the magnetorheological fluid to rise, thus affecting the use effect of the magnetorheological fluid.

[0006] Therefore, those skilled in the art have proposed a magnetorheological damper to solve the problems raised in the above background technology. Summary of the invention

[0007] The purpose of the present invention is to solve the shortcomings in the prior art and to propose a magnetorheological damper.

[0008] To achieve the above purpose, the present invention provides a magnetorheological damper, comprising a shell and a rod body, the lower end of the rod body passes through the shell and extends to the interior of the shell, and a piston is fixedly connected to the bottom of the rod body, and the surface of the piston is provided with evenly distributed through holes; an anti-settling mechanism, the anti-settling mechanism comprises a stirring assembly and an auxiliary assembly; an adjusting mechanism, the adjusting mechanism is arranged inside the rod body, and the adjusting mechanism is used to adjust the damping force; wherein the stirring assembly comprises a partition fixedly connected to the inner wall of the shell, a connecting shell is fixedly connected between the top of the partition and the inner top wall of the shell, a damping chamber is formed between the top of the partition and the inner side of the connecting shell, the piston is slidably connected to the inner wall of the damping chamber, a reflux chamber is formed between the outer edge of the connecting shell and the inner wall of the shell, the damping chamber and the reflux chamber are both filled with magnetorheological fluid, a notch is provided on the surface of the connecting shell, and an installation chamber is formed between the bottom of the partition and the inner wall of the shell.

[0009] In the above technical solution, further, a mounting block is fixedly connected to the inner wall of the mounting cavity, a driving cavity is formed between the top of the mounting block and the inner wall of the mounting cavity, a power cavity is formed between the bottom of the mounting block and the inner wall of the mounting cavity, a mounting groove is provided at the bottom of the mounting block, a rotating shaft is rotatably connected to the top of the mounting block, the top of the rotating shaft passes through the partition and is fixedly connected to a turntable located on the bottom wall of the damping cavity, and evenly distributed blades are fixedly connected to the top of the turntable.

[0010] In the above technical solution, further, a semiconductor cooling sheet is fixedly connected to the inner top wall of the installation groove, and a cold surface of the semiconductor cooling sheet is in contact with the inner top wall of the installation groove.

[0011] In the above technical solution, further, evenly distributed conduits are arranged inside the driving cavity, the cross-sectional shape of the conduits is U-shaped, one end of the conduits is connected to the damping cavity, and the other end of the conduits is connected to the reflux cavity.

[0012] In the above technical solution, further, a driving groove is opened on the surface of the rotating shaft, a spring is fixedly connected to the inner top wall of the driving cavity, the other end of the spring is fixedly connected to a connecting block, the surface of the connecting block is fixedly connected to a driving rod, and the other end of the driving rod extends to the interior of the driving groove and is slidably connected to the inner wall of the driving groove.

[0013] In the above technical solution, further, a sliding groove is provided on the surface of the mounting block, and a sliding rod is slidably connected to the inner wall of the sliding groove. The upper end of the sliding rod passes through the sliding groove and is fixedly connected to the bottom of the connecting block. The bottom surface of the sliding rod is flush with the bottom surface of the mounting block, and a through groove is provided at the bottom of the sliding rod.

[0014] In the above technical solution, further, a compensation hole connected to the power chamber is opened at the bottom of the shell, a first one-way valve is arranged inside the compensation hole, and an air inlet hole connected to the drive chamber is opened on the surface of the shell, a second one-way valve is arranged inside the air inlet hole.

[0015] In the above technical solution, further, the auxiliary component includes a dust cover fixedly connected to the surface of the rod body, the inner wall of the dust cover is slidably connected to the surface of the outer shell, the inner edge of the dust cover is provided with evenly distributed sliding grooves, the surface of the outer shell is provided with evenly distributed and integrally formed protrusions, the protrusions are slidably connected to the inner walls of the sliding grooves, and the interior of the protrusions is provided with a flow channel connected to the interior of the dust cover, and the inner wall of the driving chamber is provided with a vent hole connected to the flow channel, the top of the dust cover is connected to a connecting pipe, and the interior of the connecting pipe is provided with a third one-way valve.

[0016] In the above technical solution, further, the adjusting mechanism includes a connecting ring rotatably connected to the inner wall of the rod body, the lower end of the connecting ring is fixedly connected to a rotating ring, the outer edge of the rotating ring passes through the rod body and is fixedly connected to a shielding plate staggered with the through hole, and the bottom surface of the shielding plate is in contact with the top surface of the piston.

[0017] In the above technical solution, further, the adjustment mechanism also includes a motor arranged on the inner top wall of the dust cover, the output shaft of the motor is fixedly connected with a gear, the surface of the connecting ring is fixedly connected with a semi-toothed ring, and the semi-toothed ring passes through the rod body and is meshed with the gear.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. By setting up an anti-sedimentation mechanism, the sedimentation of magnetic particles in the magnetorheological fluid can be effectively reduced under the action of the anti-sedimentation mechanism, and the magnetorheological fluid can be timely cooled and cooled to reduce the influence of the heat generated by friction on it. By utilizing the cold energy and heat energy generated by the cold and hot surfaces of the semiconductor refrigeration plate, the cold energy is used to dissipate the heat of the magnetorheological fluid to reduce the influence of heat on it, and the heat energy is used to heat the air inside the power cavity to form an air pressure difference between the power cavity and the drive cavity. Under the action of the stirring component, the turntable and the blades can be driven to stir the magnetorheological fluid to reduce its sedimentation;

[0020] 2. Through the cooperation of the conduit, the notch, the connecting shell and the partition, the fluidity of the magnetorheological fluid can be enhanced, and the possibility of sedimentation can be further reduced. At the same time, when the magnetorheological fluid flows in the conduit, the cold energy generated by the cold surface of the semiconductor refrigeration plate can be used to dissipate heat and cool it down. In addition, when the dust cover moves up and down, the cold energy can be carried through the flow channel by the airflow, thereby enhancing the contact area between the cold energy and the magnetorheological oscillator and further improving the cooling effect.

[0021] 3. The setting of the adjustment mechanism can drive the gear to rotate through the motor according to actual needs. Under the joint action of the gear ring, the connecting ring and the rotating ring, the shielding area of ​​the through hole of the shielding plate can be adjusted to achieve less magnetorheological fluid passing through the through hole, further increasing the damping force and effectively improving the adjustment range of the magnetorheological shock absorber. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of a magnetorheological damper proposed by the present invention;

[0023] Figure 2 A cross-sectional schematic diagram of a magnetorheological damper proposed by the present invention;

[0024] Figure 3 A schematic diagram of the distribution of a shielding plate and through holes of a magnetorheological damper proposed by the present invention;

[0025] Figure 4 A schematic diagram of the connection between the third one-way valve and the connecting pipe of a magnetorheological damper proposed by the present invention;

[0026] Figure 5 A partial cross-sectional schematic diagram of a magnetorheological damper proposed by the present invention;

[0027] Figure 6 for Figure 4 A magnified view of middle;

[0028] Figure 7 for Figure 5 Enlarged view of B.

[0029] In the figure: 1, housing; 101, rod body; 102, piston; 103, through hole; 2, anti-settling mechanism; 21, stirring assembly; 2101, connecting shell; 2102, conduit; 2103, turntable; 2104, blade; 2105, partition; 2106, mounting block; 2107, first one-way valve; 2108, semiconductor cooling sheet; 2109, sliding rod; 2110, connecting block; 2111, second one-way valve; 2 112. Spring; 2113. Rotating shaft; 2114. Driving groove; 2115. Driving rod; 22. Auxiliary component; 2201. Protrusion; 2202. Dust cover; 2203. Slide groove; 2204. Connecting pipe; 2205. Third one-way valve; 2206. Air vent; 3. Adjusting mechanism; 301. Semi-toothed ring; 302. Gear; 303. Connecting ring; 304. Rotating ring; 305. Shielding piece; 306. Motor. DETAILED DESCRIPTION

[0030] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] like Figure 1-Figure 7A magnetorheological damper is shown, comprising a housing 1 and a rod 101, wherein the lower end of the rod 101 penetrates the housing 1 and extends to the interior of the housing 1, and a piston 102 is fixedly connected to the bottom of the rod 101, and a surface of the piston 102 is provided with evenly distributed through holes 103; an anti-settling mechanism 2, wherein the anti-settling mechanism 2 comprises a stirring component 21 and an auxiliary component 22; an adjusting mechanism 3, wherein the adjusting mechanism 3 is arranged inside the rod 101, and the adjusting mechanism 3 is used to adjust the damping force; wherein the stirring component 21 comprises a fixed connection A partition 2105 is provided on the inner wall of the housing 1, a connecting shell 2101 is fixedly connected between the top of the partition 2105 and the inner top wall of the housing 1, a damping chamber is formed between the top of the partition 2105 and the inner side of the connecting shell 2101, the piston 102 is slidably connected to the inner wall of the damping chamber, a reflux chamber is formed between the outer edge of the connecting shell 2101 and the inner wall of the housing 1, the insides of the damping chamber and the reflux chamber are both filled with magnetorheological fluid, a notch is provided on the surface of the connecting shell 2101, and a mounting chamber is formed between the bottom of the partition 2105 and the inner wall of the housing 1;

[0032] A coil is provided inside the piston 102 to control the damping state of the magnetorheological fluid. This technical means is a common technical means in the art, so it will not be described in detail.

[0033] When the rod body 101 is subjected to force, it drives the piston 102 to move up and down along the inner wall of the damping chamber. In this process, the damping of the magnetorheological fluid can be increased under the action of the coil. Part of the magnetorheological fluid passes through the through hole 103, and the rest is squeezed by the piston 102 and can move according to the moving direction of the piston 102.

[0034] The inner wall of the installation cavity is fixedly connected with a mounting block 2106, a driving cavity is formed between the top of the mounting block 2106 and the inner wall of the mounting cavity, a power cavity is formed between the bottom of the mounting block 2106 and the inner wall of the mounting cavity, a mounting groove is provided at the bottom of the mounting block 2106, a rotating shaft 2113 is rotatably connected to the top of the mounting block 2106, the top of the rotating shaft 2113 passes through the partition 2105 and is fixedly connected with a rotating disk 2103 located on the bottom wall of the damping cavity, and the top of the rotating disk 2103 is fixedly connected with evenly distributed blades 2104;

[0035] The rotating shaft 2113 can be rotated to drive the rotating disk 2103 connected thereto to rotate, so that the blades 2104 can rotate in the damping chamber, thereby achieving the effect of stirring the magnetorheological fluid, preventing the magnetic particles in the magnetorheological fluid from settling in the carrier fluid, improving the stability during use, maintaining a good damping effect, and thus achieving a good suspension function of the vehicle;

[0036] The inner top wall of the installation groove is fixedly connected with a semiconductor cooling sheet 2108, and the cold surface of the semiconductor cooling sheet 2108 is in contact with the inner top wall of the installation groove;

[0037] The driving cavity is provided with uniformly distributed conduits 2102, the cross-section of the conduits 2102 is U-shaped, one end of the conduits 2102 is connected to the damping cavity, and the other end of the conduits 2102 is connected to the reflux cavity;

[0038] The cold energy generated by the cold surface of the semiconductor refrigeration sheet 2108 cools down the driving cavity through the mounting block 2106, and part of the magnetorheological fluid squeezed by the piston 102 can flow through the conduit 2102. Since most of the conduit 2102 is located inside the driving cavity, the magnetorheological fluid flowing in the conduit 2102 can be cooled, thereby avoiding a large amount of heat generated by friction during the long-term vibration reduction and buffering process, which affects the use effect of the magnetorheological fluid.

[0039] The heat energy generated by the semiconductor cooling sheet 2108 heats the air inside the power cavity. As the temperature of the air inside the power cavity increases, the air pressure increases, thereby forming an air pressure difference between the driving cavity and the power cavity.

[0040] A driving groove 2114 located inside the driving cavity is formed on the surface of the rotating shaft 2113, and a spring 2112 is fixedly connected to the inner top wall of the driving cavity. The other end of the spring 2112 is fixedly connected to a connecting block 2110, and a driving rod 2115 is fixedly connected to the surface of the connecting block 2110. The other end of the driving rod 2115 extends to the interior of the driving groove 2114 and is slidably connected to the inner wall of the driving groove 2114.

[0041] The surface of the mounting block 2106 is provided with a sliding groove, the inner wall of which is slidably connected with a sliding rod 2109, the upper end of the sliding rod 2109 passes through the sliding groove and is fixedly connected to the bottom of the connecting block 2110, the bottom surface of the sliding rod 2109 is flush with the bottom surface of the mounting block 2106, and a through groove is provided at the bottom of the sliding rod 2109;

[0042] When a pressure difference is formed in the driving chamber and the power chamber, the sliding rod 2109 can be pushed to slide along the inner wall of the sliding groove under the action of pressure and drive the connecting block 2110 to move upward. In this process, the spring 2112 can be squeezed and the driving rod 2115 can be driven to move upward synchronously. The driving groove 2114 can be driven by the driving rod 2115 to push the inner wall of the driving groove 2114 to drive the rotating shaft 2113 to rotate, so as to achieve the effect of driving the rotating disk 2103 to rotate the blade 2104, thereby stirring the magnetorheological fluid in the damping chamber to prevent it from settling. The guide tube 2102 can enhance the fluidity of the magnetorheological fluid, further preventing the possibility of magnetorheological fluid settling.

[0043] Until the through slot on the slide bar 2109 is connected with the drive chamber, the air pressure in the power chamber and the drive chamber can be balanced under the action of the connection, and the slide bar 2109 can be driven to reset under the action of the spring 2112 to facilitate re-triggering;

[0044] A compensation hole connected to the power chamber is provided at the bottom of the housing 1, a first one-way valve 2107 is provided inside the compensation hole, an air inlet hole connected to the drive chamber is provided on the surface of the housing 1, a second one-way valve 2111 is provided inside the air inlet hole;

[0045] The first one-way valve 2107 allows external air to enter the power chamber in one direction, and can introduce external air into the power chamber for compensation when the air pressure inside the power chamber is lower than the external air pressure. The second one-way valve 2111 allows external air to enter the drive chamber in one direction.

[0046] The auxiliary component 22 includes a dust cover 2202 fixedly connected to the surface of the rod body 101, the inner wall of the dust cover 2202 is slidably connected to the surface of the shell 1, the inner edge of the dust cover 2202 is provided with evenly distributed slide grooves 2203, the surface of the shell 1 is provided with evenly distributed and integrally formed protrusions 2201, the protrusions 2201 are slidably connected to the inner wall of the slide groove 2203, and the protrusions 2201 are provided with a flow channel connected to the inside of the dust cover 2202, and the inner wall of the driving cavity is provided with a vent hole 2206 connected to the flow channel, the top of the dust cover 2202 is connected to a connecting pipe 2204, and the inside of the connecting pipe 2204 is provided with a third one-way valve 2205;

[0047] The third one-way valve 2205 can be provided to allow the air between the dust cover 2202 and the top of the housing 1 to be introduced into the outside through the third one-way valve 2205 in one direction;

[0048] During the downward movement of the rod body 101, the dust cover 2202 can be driven to move synchronously, thereby reducing the space between the dust cover 2202 and the top of the shell 1, so that the air stored inside can be discharged through the third one-way valve 2205 and the connecting pipe 2204. When the rod body 101 drives the dust cover 2202 to move upward, the air between the two is discharged through the third one-way valve 2205, so that the space between the dust cover 2202 and the top of the shell 1 is increased during the upward movement, so that negative pressure is formed inside. During this process, due to the setting of the flow channel and the vent hole 2206, the air stored in the driving cavity can be introduced into the internal space of the dust cover 2202 and the shell 1 through the flow channel. In this process, cold energy can be carried through the flow channel, further enhancing the heat dissipation effect of the magnetorheological shock absorber.

[0049] The adjusting mechanism 3 includes a connecting ring 303 rotatably connected to the inner wall of the rod body 101, a rotating ring 304 is fixedly connected to the lower end of the connecting ring 303, the outer edge of the rotating ring 304 passes through the rod body 101 and is fixedly connected to a shielding piece 305 staggered with the through hole 103, and the bottom surface of the shielding piece 305 contacts the top surface of the piston 102;

[0050] The adjustment mechanism 3 further includes a motor 306 disposed on the inner top wall of the dust cover 2202, the output shaft of the motor 306 is fixedly connected to the gear 302, the surface of the connecting ring 303 is fixedly connected to the semi-toothed ring 301, the semi-toothed ring 301 passes through the rod body 101 and is meshed with the gear 302;

[0051] By starting the motor 306, the gear 302 can be driven to rotate, and then the half-toothed ring 301 can be driven to rotate. Under the rotation of the half-toothed ring 301, the connecting ring 303, the rotating ring 304 and the shielding plate 305 can be driven to rotate synchronously, so that the shielding plate 305 can block the through hole 103. By blocking different areas of the through hole 103, less magnetorheological fluid can pass through, which further increases the damping force and effectively improves the adjustment range of the magnetorheological shock absorber.

[0052] Working principle: The cold energy generated by the cold surface of the semiconductor refrigeration plate 2108 cools down the driving cavity through the mounting block 2106, and part of the magnetorheological fluid squeezed by the piston 102 can flow through the conduit 2102. Since most of the conduit 2102 is located inside the driving cavity, the magnetorheological fluid flowing in the conduit 2102 can be cooled, thereby avoiding the large amount of heat generated by friction during long-term shock absorption and buffering, which affects the use effect of the magnetorheological fluid. The heat energy generated by the semiconductor refrigeration plate 2108 heats the air inside the power cavity. As the air temperature inside the power cavity increases, the air pressure can also increase, thereby forming an air pressure difference between the driving cavity and the power cavity, so that under the joint action of the sliding rod 2109, the connecting block 2110, the spring 2112, the driving rod 2115, the driving slot 2114 and the rotating shaft 2113, the turntable 2103 can be driven to rotate, which can make the blade 2104 rotate, thereby stirring the damping. The magnetorheological fluid in the cavity is prevented from settling, and the fluidity of the magnetorheological fluid can be enhanced in conjunction with the conduit 2102, further preventing the possibility of the magnetorheological fluid settling. At the same time, the dust cover 2202 can be driven to move synchronously during the downward movement of the rod body 101, thereby reducing the space between the dust cover 2202 and the top of the shell 1, so that the air stored inside can be discharged through the third one-way valve 2205 and the connecting pipe 2204. When the rod body 101 drives the dust cover 2202 to move upward, the air between the two is discharged through the third one-way valve 2205, so that the space between the dust cover 2202 and the top of the shell 1 is increased during the upward movement, so that a negative pressure is formed inside. In this process, due to the setting of the flow channel and the vent hole 2206, the air stored in the driving cavity can be introduced into the internal space of the dust cover 2202 and the shell 1 through the flow channel. In this process, cold energy can be carried through the flow channel, further enhancing the heat dissipation effect of the magnetorheological damper.

[0053] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A magnetorheological damper, comprising a housing (1) and a rod (101), It is characterized in that The lower end of the rod body (101) passes through the outer shell (1) and extends into the interior of the outer shell (1), and the bottom of the rod body (101) is fixedly connected to a piston (102), and the surface of the piston (102) is provided with evenly distributed through holes (103); An anti-settling mechanism (2), the anti-settling mechanism (2) comprising a stirring component (21) and an auxiliary component (22); An adjusting mechanism (3), wherein the adjusting mechanism (3) is arranged inside the rod body (101), and the adjusting mechanism (3) is used to adjust the damping force; The stirring assembly (21) comprises a partition (2105) fixedly connected to the inner wall of the outer shell (1); a connecting shell (2101) is fixedly connected between the top of the partition (2105) and the inner top wall of the outer shell (1); a damping chamber is formed between the top of the partition (2105) and the inner side of the connecting shell (2101); the piston (102) is slidably connected to the inner wall of the damping chamber; a reflux chamber is formed between the outer edge of the connecting shell (2101) and the inner wall of the outer shell (1); the interiors of the damping chamber and the reflux chamber are both filled with magnetorheological fluid; a notch is provided on the surface of the connecting shell (2101); and a mounting chamber is formed between the bottom of the partition (2105) and the inner wall of the outer shell (1); A mounting block (2106) is fixedly connected to the inner wall of the mounting cavity, a driving cavity is formed between the top of the mounting block (2106) and the inner wall of the mounting cavity, a power cavity is formed between the bottom of the mounting block (2106) and the inner wall of the mounting cavity, a mounting groove is provided at the bottom of the mounting block (2106), a rotating shaft (2113) is rotatably connected to the top of the mounting block (2106), the top of the rotating shaft (2113) passes through the partition (2105) and is fixedly connected to a rotating disk (2103) located on the bottom wall of the damping cavity, and evenly distributed blades (2104) are fixedly connected to the top of the rotating disk (2103); A semiconductor refrigeration sheet (2108) is fixedly connected to the inner top wall of the installation groove, and a cold surface of the semiconductor refrigeration sheet (2108) is in contact with the inner top wall of the installation groove; The driving cavity is provided with uniformly distributed conduits (2102), the cross-section of the conduits (2102) being U-shaped, one end of the conduits (2102) being connected to the damping cavity, and the other end of the conduits (2102) being connected to the reflux cavity; A driving groove (2114) is formed on the surface of the rotating shaft (2113); a spring (2112) is fixedly connected to the inner top wall of the driving cavity; the other end of the spring (2112) is fixedly connected to a connecting block (2110); a driving rod (2115) is fixedly connected to the surface of the connecting block (2110); the other end of the driving rod (2115) extends into the interior of the driving groove (2114) and is slidably connected to the inner wall of the driving groove (2114); A sliding groove is provided on the surface of the mounting block (2106), and a sliding rod (2109) is slidably connected to the inner wall of the sliding groove. The upper end of the sliding rod (2109) passes through the sliding groove and is fixedly connected to the bottom of the connecting block (2110). The bottom surface of the sliding rod (2109) is flush with the bottom surface of the mounting block (2106), and a through groove is provided at the bottom of the sliding rod (2109).

2. A magnetorheological damper according to claim 1, It is characterized in that A compensation hole connected to the power chamber is provided at the bottom of the housing (1), a first one-way valve (2107) is provided inside the compensation hole, and an air inlet hole connected to the drive chamber is provided on the surface of the housing (1), a second one-way valve (2111) is provided inside the air inlet hole.

3. A magnetorheological damper according to claim 1, It is characterized in that The auxiliary component (22) comprises a dust cover (2202) fixedly connected to the surface of the rod body (101), the inner wall of the dust cover (2202) being slidably connected to the surface of the outer shell (1), the inner edge of the dust cover (2202) being provided with evenly distributed sliding grooves (2203), the surface of the outer shell (1) being provided with evenly distributed and integrally formed protrusions (2201), the protrusions (2201) being slidably connected to the inner wall of the sliding grooves (2203), the protrusions (2201) being provided with a flow channel connected to the interior of the dust cover (2202), the inner wall of the driving chamber being provided with a vent hole (2206) connected to the flow channel, the top of the dust cover (2202) being connected to a connecting pipe (2204), the interior of the connecting pipe (2204) being provided with a third one-way valve (2205).

4. A magnetorheological damper according to claim 1, It is characterized in that The regulating mechanism (3) comprises a connecting ring (303) rotatably connected to the inner wall of the rod body (101); the lower end of the connecting ring (303) is fixedly connected to a rotating ring (304); the outer edge of the rotating ring (304) passes through the rod body (101) and is fixedly connected to a shielding sheet (305) staggered with the through hole (103); the bottom surface of the shielding sheet (305) is in contact with the top surface of the piston (102).

5. A magnetorheological damper according to claim 4, It is characterized in that The adjustment mechanism (3) further comprises a motor (306) arranged on the inner top wall of the dust cover (2202); the output shaft of the motor (306) is fixedly connected to a gear (302); the surface of the connecting ring (303) is fixedly connected to a semi-toothed ring (301); the semi-toothed ring (301) passes through the rod body (101) and is meshingly connected to the gear (302).

Images