Self-healing sealing device based on magneto-deformable rubber

Abstract

The invention discloses a self-healing sealing device based on mangneto deformation rubber. The self-healing sealing device at least comprises inner layer traditional rubber, first outer layer mangneto deformation rubber, second outer layer mangneto deformation rubber and an annular framework, wherein a radial magnetic field is added to the first outer layer mangneto deformation rubber, an axial magnetic field is added to the second outer layer mangneto deformation rubber, the annular framework is embedded inside the two pieces of mangneto deformation rubber and is used for maintaining the integral shape of the sealing device, the inner layer traditional rubber, the first outer layer mangneto deformation rubber and the second outer layer mangneto deformation rubber are respectively in an annular shape and are in coaxial radially attached arrangement, and a sealing cavity formed between the inner layer traditional rubber and a magnetic conduction body moving shaft is filled with lubricating grease. The self-healing sealing device can be used for similar reciprocating mechanisms such as high-speed-moving greater-pressure-difference high-speed rail trains or hanging shock absorbers of heavy locomotives, and similar rotating mechanisms such as helicopter rotors, rotating machinery and wind power generation equipment, the long-period dynamic sealing or static sealing can be realized, good self-healing functions are realized, and in addition, the relatively simple structure is adopted, so that the stability and the durability of the sealing device are improved.

Description

technical field [0001] The present invention relates to a kind of fields such as mechanical engineering, vehicle engineering or aerospace that require the use of sealing devices, in particular to a similar reciprocating mechanism that can be used for suspension shock absorbers of high-speed rail trains or heavy locomotives with high-speed movement and large pressure difference , and self-healing sealing devices based on magneto-deformable rubber for similar rotating mechanisms in helicopter rotors, rotating machinery, and wind power generation equipment. Background technique [0002] At present, rubber seals or magnetic liquid seals are mainly used to seal the annular gap between axial objects such as piston rods and the housing. In addition, some people have proposed and started to adopt the sealing device of magnetorheological rubber and magnetorheological grease, which has played a certain effect. [0003] According to whether there is relative movement between the two j...

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Problems solved by technology

These problems will eventually lead to seal failure

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