Boom device and concrete pump truck

Abstract

The invention discloses a boom device, which comprises a plurality of boom segments hinged in sequence. The first boom segment is hinged to a rotary table of an engineering machine, the rotary table is disposed in the middle of the engineering machine, the first boom segment is disposed upside down, the second boom segment is hinged to the first boom segment and folded above the first boom segment, and all of from the second boom segment to the final boom segment penetrates through a body of the engineering machine. The rotary table is disposed in the middle of the engineering machine, the first boom segment is disposed upside down and extends towards the tail of the engineering machine or towards a cab of the engineering machine, all of from the second boom segment to the final boom segment can penetrate through the body of the whole engineering machine, namely penetrating from the cab of the engineering machine to the tail thereof lengthwise along the engineering machine, and accordingly, arrangement of an ultra-long boom can be achieved, extension height of the whole boom device is further increased so as to extend the distribution range of the boom device. The invention further provides a concrete pump truck.

Description

technical field [0001] The invention relates to the technical field of concrete pumping, 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] With the rapid development of my country's economic construction, the market demand for construction machinery, especially concrete pump trucks, is increasing. [0003] The boom in the concrete pump truck is generally multi-section, and each section of the boom can be folded. 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, and as the delivery position changes, the boom needs to drive the delivery pipe to realize unfolding, folding and rotation. [0004] Such as figure 1 Shown is a schematic diagram of the structure of a typical concrete pump truck. The boom device of the concrete pump truck includes a turntable 1',...

AI Technical Summary

Problems solved by technology

Therefore, in this type of boom arrangement, the length of each section of the boom is limited, and in order to increase the deployment length of the boom device, it is necessary to increase the number of sections of the boom; however, due to the arrangement below the first boom 21' The space is limited, and the increase in the number of jib sections is limited

[0007] Under the current development trend of concrete pump trucks towards ultra-high pumping height and ultra-wide distribution range, the arrangement of booms in the prior art cannot satisfy the arrangement of ultra-long booms

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