Built-in valve type magnetorheological damper with adjustable damping gap
A magneto-rheological damper and gap technology, applied in the direction of shock absorbers, shock absorbers, springs/shock absorbers, etc., can solve the problems of small length of effective damping channel, large stroke of adjusting device size, installation and use restrictions, etc. , to achieve fast response, increase the range of amplitude modulation, and improve the effect of response speed
Pending Publication Date: 2022-07-26
GUANGXI UNIVERSITY OF TECHNOLOGY
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Problems solved by technology
[0004] In the traditional built-in valve magneto-rheological damper, the liquid flow channel in the valve is mostly linear, which results in a small effective damping channel length, so that the output damping force is small
Among the existing built-in valve magnetorheological dampers, one is to increase the output damping force of the magnetorheological damper by changing the path and increasing the magnetic field in the magnetorheological damper, but their control range is limited; the other One is with a damping adjustment device, but the size or stroke of some adjustment devices is large, and the installation and use are limited
Method used
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Embodiment 1
[0031] like Figure 1-2 As shown, the built-in valve-type magnetorheological damper with adjustable damping gap further includes a piston rod 1, a left end cover 2, a cylinder block 4, a first piston head 5, and a second piston head 8;
[0032] The magnetorheological fluid 19 is injected into the inner space of the cylinder block 4; the right end of the piston rod 1 enters the cylinder block 4 through the piston hole in the middle of the left end cover 2, and can slide relative to the piston rod hole; the The right end of the piston rod 1 is fixedly connected to the middle of the top surface of the left end of the first piston head 5;
[0033] The right end face of the first piston head 5 is the stepped shaft of the stepped annulus, the left end face of the second piston head 8 is the stepped shaft of the stepped annulus, and the right end face of the first piston head 5 is the same as the stepped shaft. The left end faces of the second piston head 8 correspond to each other,...
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The invention aims to provide a built-in valve type magnetorheological damper with an adjustable damping gap. The built-in valve type magnetorheological damper comprises a piston rod, a left end cover, a cylinder body, a first piston head and a second piston head, the first piston head and the second piston head are combined to form an embedded symmetrical stepped damping channel, on one hand, the effective length of the damping channel is increased, on the other hand, the perpendicular cutting area of magnetic lines generated by magnetorheological fluid and the permanent magnet is increased, the response speed of the magnetorheological fluid is increased, and damping force output is rapidly achieved. The piston rod and the piston head move back and forth at the same time, large pressure is generated in the cylinder body, the spring I connected with the interior of the piston head is pressed, the damping gap is reduced, and the amplitude modulation range of output damping force is enlarged. The built-in valve type magnetorheological damper with the adjustable damping gap overcomes the defects that in the prior art, the amplitude modulation range is narrow, and the output damping force is small, and has the advantages of being easy and convenient to operate, large in amplitude modulation range, high in response speed and large in output damping force.
Description
technical field [0001] The invention relates to the field of mechanical engineering vibration reduction, in particular to a built-in valve-type magnetorheological damper with adjustable damping gap. Background technique [0002] Magnetorheological fluid is a new type of smart material, which is generally composed of micron- or nano-scale magnetizable particles, carrier fluid, and additives. When there is no external magnetic field, the magnetorheological fluid behaves as a fluid state with good fluidity. When a magnetic field is applied, the magnetorheological fluid can be converted into a viscoelastic solid within milliseconds, and the whole process is reversible, controllable and rapid. Therefore, it is widely used in the field of vibration reduction. [0003] The magnetorheological damper realizes the change of the output damping force through the difference of the input current. In practical applications, the damping stiffness can be automatically adjusted in a large ra...
Claims
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IPC IPC(8): F16F9/53F16F9/32
CPCF16F9/535F16F9/3207F16F9/3214
Inventor 杨小龙刘钰婷
Owner GUANGXI UNIVERSITY OF TECHNOLOGY