Pretightening-force-adjustable nut automatic installing and detaching device

Abstract

The invention discloses a pretightening-force-adjustable nut automatic installing and detaching device which is composed of a self-propelled railway vehicle, a four-nut synchronous installing and detaching multifunctional device, a charging battery pack and inverter and a hydraulic system and control system box. The charging battery pack and inverter provides power for an oil pump and a control system. An oil tank, the oil pump, a hydraulic control system and an automatic control system are arranged in the hydraulic system and control system box. The pretightening-force-adjustable nut automatic installing and detaching device can be automatically and quickly aligned with a working position; four nuts are consistent in pretightening force, and the pretightening-force-adjustable nut automatic installing and detaching device can adapt to installation of nuts with different pretightening force requirements; sleeper end ballast collapse can be effectively stopped, and a guarantee is provided for quick replacement of a new sleeper; the railway vehicle can move back and forth on a railway track, so that train passage is avoided; and control is automatic, operation is convenient, and nut installation and detachment and sleeper end ballast collapse stop work efficiency is high.

Description

technical field [0001] The invention relates to a railway maintenance machine, in particular to an automatic device for installing and disassembling nuts with adjustable pretightening force. Background technique [0002] During the long-term use of railway sleepers, due to natural settlement and vibration, some railway sleepers sink and individual sleepers are damaged, which needs to be replaced in time. During the sleeper replacement process, it needs to be removed The nuts attached to the four bolts of the broken sleeper should be pulled out to prevent the ballast at the sleeper end from collapsing. After replacing the good sleeper, install the four nuts on the four bolts and pre-tighten the four bolts manually. Turning a single nut is time-consuming and laborious, and the work efficiency is low. It is difficult to achieve the same pretightening force of the four nuts. Contents of the invention [0003] The object of the present invention is to provide an automatic devi...

AI Technical Summary

Problems solved by technology

[0002] During the long-term use of railway sleepers, due to natural settlement and vibration, some railway sleepers sink, and individual sleepers are damaged, which needs to be replaced in time. During the sleeper replacement process, it needs to be removed. The nuts attached to the four bolts of the broken sleeper should be pulled out to prevent the ballast at the sleeper end from collapsing. After replacing the good sleeper, install the four nuts on the four bolts and pre-tighten the four bolts manually. Turning a single nut is time-consuming and labor-intensive, and the work efficiency is low. It is difficult to achieve the same pre-tightening force of the four nuts

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