Boom device and concrete pump truck

Abstract

The invention provides a boom device. The boom device comprises at least three sections of booms which are connected in turn, wherein a root end of a first section of boom (1) is connected to a turntable; some of the booms are bent booms at least occupying two rows of space; and when all the booms are under a folded state, at least three rows of space are occupied by the boom device. The boom device provided by the invention can be folded into at least three rows, thereby optimizing the arrangement of the arm sections, reducing a boom folding height of a multi-sectional arm concrete pump truck, being capable of increasing the section number of the booms in a limited upright space and reducing the length of a single section of boom under a condition of a constant overall length of the whole boom device, further reducing the length of the whole vehicle, efficiently reducing the minimum unfolding height of the boom device and being beneficial to the smooth unfolding of the boom device. Besides, the invention also discloses a concrete pump truck which comprises the boom device.

Description

technical field [0001] The invention relates to the technical field of engineering machinery, in particular to an arm support device. The present invention also relates to a concrete pump truck with the above boom device. Background technique [0002] The concrete pump truck is a kind of equipment that transports concrete along the pipeline to the required location of the construction project. During the working process of the concrete pump truck, the concrete needs to be transported to the designated position through the delivery pipe fixed on the boom device, and as the delivery position changes, the boom device needs to drive the delivery pipe to realize unfolding, folding and rotation. The boom device of the concrete pump truck generally includes a multi-section boom, and each section of the boom can be folded. [0003] At present, the folding methods used for concrete booms mainly include R-type, Z-type and RZ-type. The R-type folding method can make full use of the v...

AI Technical Summary

Problems solved by technology

[0005] With the increase of the concrete pumping height, the overall length of the boom also increases accordingly. At present, when the length of the boom needs to be increased, due to the limitation of the length of the whole vehicle, the length of the single-section boom cannot be infinitely extended. The jib section is added to the fourth jib frame, which can easily make the overall height of the jib frame super high, which is not conducive to the realization of multi-boom sections such as six-section jib

[0006] At the same time, when the working space of the concrete pump truck is relatively small, the longer the single-section boom is, the more difficult it is to deploy it.

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