Bolt assembling and dismantling mechanical wrench for transmitting large torque in long and narrow space

Abstract

The invention discloses a bolt assembling and dismantling mechanical wrench for transmitting large torque in long and narrow space, and belongs to the technical field of bolt assembling technology. According to the wrench, a mechanical arm composed by a multi-stage flexible rope transmission mechanism and a transmission arm assembly is of a foldable multi-stage structural design, so that the mechanical arm conveniently and smoothly enter and leave the space, and the demands of the operation in long and narrow space are met; the upper end of a rotary arm extends to the upper portion of a connecting plate to be taken as a torque input end to facilitate the combining assembling with an automatic rotary torque input mechanism, and the implementation of automation is convenient; structures of a lifting and lowering assembly, a pulling rod, a rotary arm, a transmission gear group, a transmission arm assembly, a multi-stage flexible rope transmission mechanism and the like are reasonably assembled to allow a nut sleeve to achieve uninterrupted linear motion and rotary motion so as to achieve the continuous screwing and loosening of a bolt, the assembling efficiency is high, and the assembling cost is reduced; the flexible rope on the lowest transmission wheel winds the transmission wheel for multiple laps, and the leading directions of two flexible ropes on the flexible rope on the transmission wheel are opposite so as to conveniently offset the positive pressure on the lowest transmission wheel and improve the transmission torque.

Description

technical field [0001] The invention relates to the technical field of bolt assembly, in particular to a bolt loading and unloading mechanical wrench used for transmitting large torque in a long and narrow space. Background technique [0002] In the process of mechanical assembly, the problem of loading and unloading bolts with high torque in a long and narrow space is often encountered. The current multi-stage gear drive wrench is not easy to pass through the space smoothly, has low transmission efficiency, is easy to break, and cannot be automated. Assembly efficiency is reduced. [0003] Aiming at the problem of bolt loading and unloading in similar small spaces, domestic experts and scholars have proposed mechanical wrenches based on ordinary belt drive and toothed belt drive designs, but these structures cannot meet the requirement that the structural size when entering and leaving the space is much smaller than the structural size in the narrow and long operating space...

AI Technical Summary

Problems solved by technology

[0002] In the process of mechanical assembly, the problem of loading and unloading bolts with high torque in a long and narrow space is often encountered. The current multi-stage gear drive wrench is not easy to pass through the space smoothly, has low transmission efficiency, is easy to break, and cannot be automated. Reduced assembly efficiency

[0003] Aiming at the problem of bolt loading and unloading in similar small spaces, domestic experts and scholars have proposed mechanical wrenches based on ordinary belt drive and toothed belt drive designs, but these structures cannot meet the requirement that the structural size when entering and leaving the space is much smaller than the structural size in the narrow and long operating space. It is also impossible to achieve high torque transmission; the hydraulic wrench based on the design of the rotary propulsion hydraulic transmission structure proposed by domestic experts and scholars can achieve high torque, but it cannot meet the operation requirements in narrow and long spaces

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