Train door lock used inner triangular tube

Abstract

The invention discloses a train door lock used inner triangular tube, whose section is provided with a special-shaped structure, wherein the outer wall of the train door lock used inner triangular tube is round, and the inner wall of the train door lock used inner triangular tube is triangular. The train door lock used inner triangular tube provided by the invention has the advantages of high intensity, long service life, good abrasive resistance and high precision, can well utilize the special-shaped structure of the inner wall of the tube body to be adaptive to a lock head, so as to achieve the purpose of unlocking.

Description

technical field [0001] The invention relates to a special-shaped tube, in particular to an inner triangle tube for train door locks. Background technique [0002] The production of seamless steel pipes is one of the pillar industries of the country. With the development of the national economy, the demand for seamless steel pipes is increasing year by year. Seamless steel pipes are used to manufacture structural components such as automobiles, trains, airplanes, ships, and space launchers, as well as mechanical parts such as agriculture, mining, engineering, electrical engineering, textiles, and military industries. Seamless steel pipes are used in both civil and military fields. are very broad. Because the circular cross-section steel pipe is more uniform in bearing internal or external radial pressure, it is widely used, but in many cases, the circular cross-section steel pipe cannot meet the specific use requirements of structural components or mechanical components, so ...

AI Technical Summary

Problems solved by technology

Because the circular cross-section steel pipe is more uniform in bearing internal or external radial pressure, it is widely used, but in many cases, the circular cross-section steel pipe cannot meet the specific use requirements of structural components or mechanical components, so special special-shaped steel pipes are required. Steel pipes are used to manufacture structural parts or mechanical parts to achieve the purpose of improving material utilization, simplifying production processes, and shortening production cycles.

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