Double-coil magneto-rheological damper with multiple axial liquid flow damping channels
A magneto-rheological damper and damping channel technology, which is applied in the direction of shock absorbers, shock absorbers, springs/shock absorbers, etc., can solve the problem of reduced damper adjustable range, insufficient output damping force, damper initial Increased damping force and other problems, to achieve the effect of large dynamic adjustment range of damping, increase of effective damping length, and enhancement of yield stress
Pending Publication Date: 2018-12-04
EAST CHINA JIAOTONG UNIVERSITY
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Problems solved by technology
[0004] The traditional single-coil magneto-rheological damper is widely used due to its simple structure, but due to structural limitations, it cannot generate a large output damping force
The emergence of the dual-coil magneto-rheological damper effectively solves the problem of insufficient output damping force, but due to the increase in the length of the damping gap, the initial damping force of the damper will also increase, so the adjustable range of the damper is greatly reduced
Magneto-rheological dampers have further limited their industrial applications due to problems such as damping force and adjustable range
Method used
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[0014] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:
[0015] figure 1 It is a structural representation of the present invention. Mainly include: left lifting ring 1, piston rod 2, left end cover 3, cylinder body 4, left excitation coil 5, left magnetic conducting ring 6, left magnetic separating ring 7, inner sleeve 8, right magnetic conducting ring 9, right magnetic separating ring Ring 10 , right excitation coil 11 , right end cover 12 and right suspension ring 13 .
[0016] figure 2 It is a sectional view of the cylinder body of the present invention, and the inner surface of the cylinder body 4 is processed with a left annular protrusion 14 and a right annular protrusion 15 .
[0017] image 3 Shown is a schematic diagram of the magnetorheological fluid flowing through the liquid flow channel when the piston rod of the present invention is pulled to the left. The area surrounded by the inner sleeve 8,...
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The invention discloses a double-coil magneto-rheological damper with multiple axial liquid flow damping channels. The damper is primarily composed of a piston rod, end covers, a cylinder, a magnet exciting coil, magnetic conductive rings, a magnetic isolating ring, an inner sleeve and the like. The first, second, third and fourth axial liquid flow damping channels are separately formed between the inner sleeve and the left magnetic conductive ring, between the inner sleeve and the left end cover, between the inner sleeve and the right magnetic conductive ring and between the inner sleeve andthe right end cover. When currents are separately introduced into the left and right magnet exciting coils, magnetic fields of certain amplitudes will be generated in the four axial liquid flow damping channels. The viscosities of magnetorheological fluids flowing through the axial liquid flow damping channels are increased and the yield stresses are increased, so that a pressure difference is formed between a container II and a container III of the magneto-rheological damper. By controlling the magnitude of currents applied, the damping forces are controlled effectively. The double-coil magneto-rheological damper disclosed by the invention is suitable for vibration attenuation and quake prevention systems of structures such as railways, automobiles and bridges.
Description
technical field [0001] The invention relates to a magneto-rheological damper, in particular to a double-coil magneto-rheological damper with multi-section axial fluid flow damping channels. Background technique [0002] The magnetorheological damper is a semi-active intelligent shock absorber made of the magnetorheological effect of magnetorheological fluid. Magnetorheological dampers have the advantages of large output damping force, continuous controllability and reversibility, and fast response speed. Therefore, it is widely used in various industrial vibration reduction fields, such as automobile suspension vibration reduction, housing construction vibration reduction, railway locomotive vibration reduction and heavy machinery vibration reduction, etc. [0003] The traditional magneto-rheological damper winds a set of exciting coils on the built-in piston head, and passing current can generate magnetic lines of force perpendicular to the damping gap. The viscosity of t...
Claims
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Login to View More IPC IPC(8): F16F9/53
CPCF16F9/535
Inventor 胡国良陈苗龙铭喻理梵丁孺琦
Owner EAST CHINA JIAOTONG UNIVERSITY