Short-stroke inflatable damper for high-speed train

Abstract

The invention relates to a short-stroke inflatable damper for a high-speed train. The short-stroke inflatable damper comprises an oil reservoir casing and a piston rod, wherein one end of the oil reservoir casing is provided with a first cylindrical bottom and connected with a first connecting ring, the other end of the oil reservoir casing is provided with a sealing cover, and the oil reservoir casing and the sealing cover are matched in a sealed mode; a piston cylinder is arranged in the oil reservoir casing, and the piston cylinder and the oil reservoir casing are spaced from each other; the two ends of the piston cylinder abut against the first cylindrical bottom of the oil reservoir casing and the sealing cover of the oil reservoir casing, a rod hole is formed in the center of the sealing cover, the inner end of a piston rod stretches into the piston cylinder through the rod hole and is connected with a piston, and a second connecting ring is arranged at the outer end of the piston rod. The short-stroke inflatable damper is characterized in that a cylindrical dust cover is arranged on the outer side of the piston rod, a second cylindrical bottom is arranged at one end of the dust cover and located between the second connecting ring and the adjacent end of the piston rod, and the inner diameter of the dust cover is larger than the outer diameter of the oil reservoir casing. By the adoption of the short-stroke inflatable damper, the situation that passengers feel uncomfortable due to the fact that a damper loses efficacy to make the high-speed train bump during running can be avoided, and the vibration amplitude of the high-speed train during traveling can be reduced.

Description

Technical field [0001] The invention relates to a train shock absorber. Specifically, it is a short-stroke pneumatic shock absorber used to reduce the vibration amplitude during high-speed trains. Background technique [0002] It is known in the field of high-speed train production that short-stroke inflatable shock absorbers are installed on high-speed trains in order to reduce the vibration amplitude during high-speed trains. This short-stroke inflatable shock absorber includes an oil storage cylinder and a piston rod. One end of the oil storage cylinder has a cylinder bottom and is connected with a first connecting ring for connecting with the carriage in the installed state, and the other end of the oil storage cylinder There is a cover and the two are in a sealed fit. There is a piston cylinder in the oil storage cylinder with a distance between the two. The two ends of the piston cylinder respectively abut against the cylinder bottom and the cover of the oil storage cyli...

AI Technical Summary

Problems solved by technology

[0003] Since this kind of short-stroke pneumatic shock absorber is only composed of an oil storage cylinder, a piston cylinder in the oil storage cylinder, and a piston rod with a piston connected at one end, there is no dust-proof measure. During the running of a high-speed train, rainwater, mud and air The corrosive substances in the oil will damage the seal between the piston rod and the oil storage cylinder. In severe cases, it will cause the shock absorber to fail, causing the high-speed train to bump during operation and bring discomfort to passengers.

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