Boom device and working machine

Abstract

The invention relates to the technical field of operation machinery, and provides an arm support device and operation machinery, the arm support device comprises at least six arm supports which are sequentially connected, the arm supports can be sequentially folded into at least three rows in the width direction of the operation machinery, the first arm support is connected with a rotary table, and the first to fifth arm supports occupy two rows of spaces; and the sixth section of arm frame is a turning arm frame and occupies the second column of space and the third column of space. The space in the width direction of the operation machine can be effectively utilized, it is guaranteed that the overall height of the operation machine is not too high and the overall length of the operation machine is not too long, meanwhile, the extending arm of the arm support device can be longer, and therefore the conveying height of the operation machine is increased; besides, the width of the arm support does not need to be reduced, so that the section of the arm support is reduced to make space for arranging the added arm support, the rigidity of the arm support is guaranteed, the stress of the arm support is reduced, and therefore a longer arm support or more sections of arm supports can be arranged under the conditions that the rigidity of the arm support is not lost and the stress requirement of the arm support is met.

Description

technical field [0001] The invention relates to the technical field of working machines, in particular to a boom device and a working machine. Background technique [0002] At present, there are many folding modes of the existing concrete boom device, which can be divided into R (winding type) type, Z (folding type) type, and RZ comprehensive type. At present, the bending direction of the boom is basically to fold down from the first section of the boom. After folding, each section of the boom is distributed on two longitudinal planes that are parallel and spaced apart from each other. This boom device is folded. In this way, the number of boom sections and space utilization are limited. Due to the structural limitation of the above-mentioned boom device, for large-scale long-boom pump trucks, the boom needs to have a long boom span, which leads to the need to set the length of the single-section boom to be longer or increase the number of boom sections, thus causing the wh...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a boom device and a working machine, which are used to solve the problems in the prior art that the length or height of the pump truck does not meet the transportation specifications or the rigidity of the boom is insufficient and the stress is too high after the boom is too long and folded. defect

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