Magnetorheological damper composite work mode high output method and damper

A magneto-rheological damper and working mode technology, applied in shock absorbers, shock absorbers, springs/shock absorbers, etc., can solve the problem of a single effective damping channel length in the working mode, to increase the effective damping channel length, The effect of reducing manufacturing cost and large damping output

Active Publication Date: 2018-07-13
NORTHEASTERN UNIV
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem of single working mode of magneto-rheological damper and insufficient length of effective damping channel

Method used

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  • Magnetorheological damper composite work mode high output method and damper
  • Magnetorheological damper composite work mode high output method and damper
  • Magnetorheological damper composite work mode high output method and damper

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings. Such as figure 1 As shown, the present invention includes connector end cap 1, connector body 2, lead screw piston rod 3, end cap 4, magnetorheological fluid 5, cylinder wall 6, hysteresis ring 7, induction coil 8, piston 9, seal ring 10, ball nut pair 11, bearing 12, fixed nut 13 and effective damping channel 14; the cylinder body is filled with magnetorheological fluid 5, and the two ends of the piston rod 5 protrude from the cylinder body; the screw rod piston rod 3 is provided with a piston 9 , sliding in the cylinder, the piston 9 is provided with an annular groove, the induction coil 8 is wound in the groove, and the induction coil 8 is connected with a wire. In order to avoid the influence brought by the rotation of the screw piston rod 3, the two ends of the damper are provided with a connection device consisting of a connector end cover 1, a connector body 2 an...

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Abstract

The invention discloses a magnetorheological damper composite work mode high output method and a damper. A piston rod is provided with a lead screw thread matched with a ball nut pair on a cylinder. When the piston rod does the linear movement relative to the cylinder under the action of outer loads, the piston rod can rotate around the axis of the piston rod through a ball screw motion pair, meanwhile, a piston is driven to linearly move relative to the cylinder and rotate around the axis of the piston, the piston needs to overcome dual damping in the axial direction and the circumferential direction, and two typical work modes of two magnetorheological dampers are combined. A magnetic hysteresis ring is arranged on the peripheral surface of the piston, distribution of magnetic inductionlines is more reasonable, the effective work length of a damping channel is increased, and efficient damping force output can be achieved from the two above aspects. The magnetorheological damper composite work mode high output method and the damper have the beneficial effects that firstly, the two work modes are integrated; secondly, the magnetic path optimization potential is large; and thirdly,the structure is simple and feasible.

Description

technical field [0001] The invention relates to a vibration control technology of an engineering structure, in particular to a magneto-rheological damper. Background technique [0002] The magneto-rheological damper is a semi-active control damper that uses the smart material magneto-rheological body as the working medium. By controlling the input current or voltage, the strength of the electromagnetic field loaded on the magneto-rheological body changes. Furthermore, the rheological properties of the magnetorheological fluid can be changed within tens of milliseconds, thereby providing controllable damping and stiffness. Magneto-rheological dampers have the characteristics of millisecond-level response speed, large control range and large damping force output, and have become excellent semi-active actuators in industrial applications. At present, magnetorheological dampers have been widely used in vibration reduction and anti-seismic systems of buildings and bridges, and v...

Claims

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Application Information

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IPC IPC(8): F16F9/53F16F9/32
Inventor 史啸天李鹤
Owner NORTHEASTERN UNIV
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