Engineering machine and telescopic arm thereof

Abstract

The invention discloses a telescopic arm, which is used for engineering machines. A towing chain is arranged on a first section of arm of the telescopic arm and is provided with a fixed end and a moving end capable of moving along a second section of arm, wherein the fixed end is supported by a bracket which is fixedly arranged outside the first section of arm; and the moving end is inwards bent.Since the towing chain is inwards bent, the distance between the moving end of the telescopic arm and the first section of arm can be quite short and the space occupied by the towing chain in the operation can be greatly saved. On the premise of ensuring that the towing chain can normally work and the functions are smoothly achieved, the structural form becomes more compact. Meanwhile, the interference with other structures can be avoided. The invention also discloses an engineering machine comprising the telescopic arm.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a telescopic arm for engineering machinery. The invention also relates to a construction machine comprising a telescopic arm as described above. Background technique [0002] With the continuous development of modern industrial technology, mechanical control and drive are increasingly replaced by hydraulic transmission and electrical automatic control. There are many hydraulic tubes and cable tubes that move with the moving parts in both stand-alone and complete equipment. In order to make these The layout and installation of the follower pipe are more standardized and optimized, and drag chains are required. [0003] The drag chain is a load-bearing device composed of many unit chain links. The chain links can rotate freely. The unit chain links are composed of left and right chain plates and upper and lower cover plates. Some drag chains can be opened for each se...

AI Technical Summary

Problems solved by technology

This area cannot be used in most cases, and its existence will only lead to a larger operating space. If the space is relatively small, this installation method is not suitable for use

In addition, the current equipment layout tends to be compact, figure 1 The installation state will cause a waste of space, which is not conducive to the effective use of space

[0010] Secondly, the towline runs in a suspended manner, which has its own weight, and the hydraulic pipelines and cables in the towline also have weight. With the increase of the overhead part of the towline, the deflection of the towline (deformation due to force) is also increasing , limited by the height between the drag chain and the support and the bow of the drag chain, depending on the bow adjustment of the drag chain itself sometimes cannot guarantee that it will not interfere with other structures

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