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Magnetic liquid damping shock absorber with arc-shaped inner wall axial section

A magnetic liquid, shaft section technology, applied in the direction of spring/shock absorber, magnetic spring, spring, etc.

Inactive Publication Date: 2014-10-01
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a magnetic liquid damping shock absorber with a circular arc-shaped inner wall shaft section, which is suitable for vibration reduction of longer objects in spacecraft and solves the problem of vibration reduction of longer objects in spacecraft. question

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  • Magnetic liquid damping shock absorber with arc-shaped inner wall axial section

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Embodiment Construction

[0016] figure 1 Shown is the structural principle diagram of the invention. The permanent magnet (4) with the magnetic liquid (5) adsorbed is located inside the non-magnetic shell (1), and the inner wall of the non-magnetic shell (1) has a circular arc shape. The central angle θ corresponding to the inner wall surface (9) of the housing with an arc-shaped shaft section is 5°, and the two ends of the circumferential wall of the non-magnetic conductive housing (1) are provided with circular air holes (8) and air holes (10) respectively ,Such as figure 2 As shown, the number of pores is 8, and the diameter of the pores is 5mm, such as figure 2 Shown. The O-ring (7) is used for sealing, and the non-magnetic shell (1) and the non-magnetic shell (6) are rigidly connected through bolts (2) and nuts (3). The non-magnetic shell (1) and There is an annular gap between the non-magnetic shell (6), and the annular gap forms a connected body with the air hole (8) and the air hole (10), s...

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Abstract

The invention discloses a magnetic liquid damping shock absorber with an arc-shaped inner wall axial section, which is suitable for shock absorption for a long object in a spacecraft. The device comprises a non-magnetic-conducting shell (1), a bolt (2), a nut (3), a permanent magnet (4), a magnetic liquid (5), a non-magnetic housing (6), an O-shaped ring (7), air hole (8), a shell inner wall surface (9) with an arc-shaped inner wall axial section, an air hole (10) and an interlayer air gap (11), wherein connection among the various portions above is as follows: the permanent magnet (4) is installed in the non-magnetic-conducting shell (1), the magnetic liquid is coated on the permanent magnet (4), and the non-magnetic housing (6) and the non-magnetic-conducting shell (1) are sealed by the O-shaped ring (7), and rigidly connected by the bolt (2) and the nut (3); the inner wall axial section of the non-magnetic-conducting shell (1) is arc-shaped, and the corresponding central angle theta is 1-15 degrees. The device is quite sensitive to an inertia force, and capable of carrying out effective shock absorption on shock with the characteristics of a low frequency, a small displacement and a low accelerated speed.

Description

Technical field [0001] The invention relates to a magnetic liquid damping shock absorber with an arc-shaped inner wall axial section, which is suitable for damping long objects in a spacecraft. Background technique [0002] Magnetic fluid damping is a new type of damping method, which is highly sensitive to inertial force, has the advantages of simple structure, small size, large energy consumption and long life. It has been successfully applied in the aerospace field. Due to the special operating environment of spacecraft, its volume, weight, and energy are subject to certain restrictions, and the corresponding shock absorber should have the characteristics of small size, light weight and high reliability. There are some long objects (such as solar panels, satellite antennas, etc.) in the spacecraft that have local vibration reduction problems. These vibrations often exhibit the characteristics of low frequency, small displacement and small acceleration. This requires that the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F6/00
Inventor 王四棋李德才任旦元
Owner BEIJING JIAOTONG UNIV
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