Fatigue-resistant doubling device for adjustable integral dropper

Abstract

A fatigue-resistant doubling device for an adjustable integral dropper comprises a doubling bolt, a pressing block and a locking nut. A mounting groove is formed in a screw rod of the doubling bolt inthe radial direction, and the mounting groove extends to the root of the screw rod; a first bushing, a second bushing and a pressing block are inserted into the mounting groove, and the second bushing is located between the first bushing and the pressing block; a first doubling groove matched with the first lining is formed in the inner end surface of a bolt head of the doubling bolt, and the first doubling groove is connected with the root of the mounting groove; and a second doubling groove matched with the second bush is formed in the inner end surface of the pressing block, the locking nut is arranged on the screw rod of the doubling bolt in a sleeving mode, the locking nut is rotated, and the two dropper wires are clamped together through the first bush and the second bush. Accordingto the invention, the dropper wires are in direct contact with the bushings during doubling, and as the hardness of the bushing material is matched with that of the dropper material, the damage of the bushings to the dropper wires is smaller under the working condition of long-time vibration, and the fatigue resistance of the dropper wires is improved.

Description

technical field [0001] The invention belongs to the technical field of rail transit catenary, and in particular relates to a fatigue-resistant doubling device for adjustable suspension strings. Background technique [0002] The adjustable body hanging string is widely used in ballast track railways, which is convenient for adjusting the structural height between the catenary cable and the contact line during construction, installation and operation and maintenance, so as to ensure the height guide of the contact line. The adjustment of the parallel device is completed. The existing paralleling device clamps the hanging string through the paralleling bolt and the pressing block to ensure the axial sliding load of the hanging string. However, during the operation of the line, after a long period of vibration conditions, the suspension strings were broken at the junction of the doubling bolts and the briquetting blocks, and serious broken lines occurred, which affected driving...

AI Technical Summary

Problems solved by technology

However, during the operation of the line, after a long period of vibration conditions, the suspension strings were broken at the junction of the doubling bolts and the briquetting block, and serious broken lines occurred, which affected driving safety.

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