Magnetorheological landing mechanism and buffering method with repeatable buffering

A technology of magnetorheology and magnetorheological fluid, which is applied to the landing device of aerospace vehicles, the system of spacecraft returning to the earth's atmosphere, etc., can solve the problems of non-repeatable use, low reliability, complex structure, etc., and achieve improved device The effect of long life, high safety, and clear force transmission and energy consumption mechanism

Active Publication Date: 2022-07-08
SOUTHEAST UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

The metal permanent deformation method generally uses a multicellular metal such as aluminum honeycomb to absorb a large amount of energy smoothly during plastic deformation. This method has a stable buffering process and does not rebound after buffering, but it cannot be used repeatedly; the gas-liquid damping method has a stable buffering process and buffers There is no rebound in the process, but the structure is relatively complex and the reliability is low

Method used

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  • Magnetorheological landing mechanism and buffering method with repeatable buffering
  • Magnetorheological landing mechanism and buffering method with repeatable buffering

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Embodiment

[0035] In the embodiment, the outer cylinder 1 and the piston 4 are made of aluminum alloy, and the piston 4 is provided with a second sealing ring 14 to maintain the sealing between the piston 4 and the outer cylinder 1;

[0036] The piston 4 is symmetrically opened with two through holes, which connect the upper liquid chamber 2 and the lower liquid chamber 5. The upper liquid chamber 2 is filled with the magnetorheological fluid 8, and the lower liquid chamber 5 contains the magnetorheological fluid 8, and the liquid level exceeds the lower liquid chamber. connection to the outer catheter.

[0037] The lower end of the piston 4 is connected with the foot pad 6 through the push rod 11, and the three are mechanically connected;

[0038] The upper end of the piston 4 is connected with the lower end of the spring 3 , and the upper end of the spring 3 is fixed on the inner side of the top of the outer cylinder 1 .

[0039] The bottom of the outer cylinder 1 is open, and a cylin...

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Abstract

The invention discloses a magnetorheological landing mechanism with repeatable buffering and a buffering method. The mechanism includes an outer cylinder, a cylinder cover, a foot pad, a push rod, a magnetic inner catheter and an outer catheter. The outer cylinder is provided with a piston, which is divided into an upper liquid chamber and a lower liquid chamber; the upper end of the piston is connected with the lower end of the spring, the lower end of the piston is connected with the upper end of the push rod, the piston is provided with two through holes, and the through holes are A magnetic inner conduit and a check valve are provided; the lower end of the push rod is connected with the foot pad; the outer conduit is connected with the upper liquid chamber and the lower liquid chamber, and a check valve is arranged in the middle. The magnetorheological landing mechanism with repeatable buffering of the present invention has the advantages of simple structure, no external energy source, and repeated use.

Description

technical field [0001] The invention belongs to the field of landing buffers, and in particular relates to a magnetorheological landing mechanism with repeatable buffering. Background technique [0002] The key to realizing the soft landing of the probe is the landing buffer mechanism, whose main purpose is to buffer the large amount of impact energy generated by the probe during the landing process. Most soft landing buffer mechanisms are composed of 3-4 landing legs, the soft landing attitude is easy to control, and multiple landing legs can form a platform after the buffer is over. [0003] At present, the buffer energy absorption methods used for landing legs are generally metal permanent deformation method and gas-liquid damping method, and electromagnetic damping method, magnetorheological fluid method, friction damping method, etc. are also the research trends. The metal permanent deformation method generally uses a multicellular metal such as aluminum honeycomb to a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B64G1/62
CPCB64G1/62
Inventor 徐赵东杨启航杨建中景兴建朱汪
Owner SOUTHEAST UNIV
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