A kind of safety system for returning and removing teeth of railway crane

Abstract

The invention discloses a returning and gear-disengaging safety system of a railway crane. The returning and gear-disengaging safety system of the railway crane is characterized by comprising a housing (1) and a center shaft (4), wherein two ends of the center shaft (4) are fixed on the housing (1); a gear (2) is assembled on the center shaft (4); the gear (2) is capable of sliding on the center shaft (4); a gear-hanging cylinder (5) is arranged at one end of the housing (1); the tail end of a piston rod of the gear-hanging cylinder (5) is connected with a shifting fork (7); the shifting fork (7) is connected with the gear (2); the gear-hanging cylinder (5) is connected with a train air pipe through an air pipe (10). The returning and gear-disengaging safety system of the railway crane can be accurately positioned at the required position, is provided with a multilayer logic safety mechanism, can ensure the returning and gear-disengaging reliability; meanwhile, the automatic control function can be implemented, so that the whole control process is accurate and convenient to control.

Description

technical field [0001] The invention relates to the technical field of locomotives, in particular to a safety system for returning and detaching gears of railway cranes. Background technique [0002] At present, railway hoisting is mainly used for the rescue of railway traffic accidents. It has two functions for the crane to travel: one is as a non-powered passenger car and freight car, which is pulled by the locomotive to quickly reach the rescue site or maintenance site, and returned to the locomotive depot. The running speed is relatively fast, commonly known as the "loopback" of the crane. The second is that the crane is equipped with a set of self-propelled walking by its own power and transmission mechanism. It uses two moving shafts to drive, the speed is slow, and the running distance is short. , Carry out cargo lifting operations. [0003] The self-propelled railway crane relies on its own diesel engine power. When the driving gear and the driven gear mesh, the dr...

AI Technical Summary

Problems solved by technology

Once the return spring is fatigued and the tension is not enough, or the return spring is damaged, or even the bit spring is broken, the main and driven gears may mesh, and the driven gear (fixed on the driving shaft) rotates at a high speed to drive the driving gear to rotate at a high speed, causing the hydraulic motor to rotate at a high speed , will inevitably damage the hydraulic motor or reducer, resulting in damage to the gearbox components and falling off, resulting in driving safety accidents

[0007] Regardless of whether the loopback de-tooth safety device adopts a mechanical tooth insert or a fork with an external return spring to de-tooth, there are hidden dangers to driving safety.

The mechanical tooth removal forgets to disengage the running gear, resulting in a driving accident; the mechanical tooth removal cardan shaft and the moving shaft are not disengaged, which is likely to cause damage to the cardan shaft and the bearing of the reduction box, resulting in driving safety accidents; Jaw-type tooth removal must be manually shaken, the production efficiency is low, and it has a certain labor intensity; once the reset spring is fatigued and the tension is not enough, it will cause a traffic safety accident; the external reset spring of the shift fork may appear. Damaged, resulting in driving safety accidents; once the external return spring of the shift fork breaks, causing driving safety accidents

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