Overhead working engineering machine and side foldable boom thereof

Abstract

The invention discloses a side foldable boom, which comprises a No.1 arm and a No.2 arm which is hinged with the head of the No.1 arm. In a nonworking state, the hinging axis of the No.2 arm and the No.1 arm and a horizontal plane form a proper included angle, and the cylinder axis of the No.2 arm is arranged above the cylinder axis of the No.1 arm and is in parallel with the cylinder axis of the No.1 arm. During the working of the side foldable boom, when the No.2 arm rotates around the hinging axis, the cylinder axis of the No.2 arm gradually tilts to the middle perpendicular plane of the No.1 arm, i.e. the distance between the mass center of the No.2 arm and the middle perpendicular plane of the No.1 arm is gradually reduced, the lateral bending moment of the No.2 arm to the No.1 arm is reduced, the lateral bending deformation of the No.1 arm is effectively reduced and the working safety is improved. The invention additionally discloses an overhead working engineering machine comprising the side foldable boom.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a side-mounted folding boom of an aerial work engineering machinery. In addition, the present invention also relates to a construction machine for high-altitude operation comprising the above-mentioned side folding boom. Background technique [0002] With the rapid development of my country's economic construction, the market demand for high-altitude construction machinery is also increasing. [0003] In order to solve the technical problem of super high vehicle height in the driving state, most of the boom structures of aerial work construction machinery adopt the arrangement of folded side. The side-mounted folding jib set refers to two sets of telescopic arms whose centers are not in the same luffing plane. One end is hinged end to end and driven by the luffing mechanism to realize the expansion and recovery of one set of telescopic arms relative to the other se...

AI Technical Summary

Problems solved by technology

[0010] During the working process, the No. 1 arm 101 is also subjected to comprehensive external forces such as lateral wind load F, which further increases the lateral bending moment on the No. 1 arm 101. Under the action of the total lateral bending moment M1, The amount of lateral deformation of the No. 1 arm 101 will be larger (shown in figure 2 Middle), the stability of the No. 1 arm 101 structure and the ability to work safely are seriously affected

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