Concrete pump truck arm support, concrete pump truck arm support assembly and concrete pump truck

Abstract

The invention belongs to the field of concrete pump truck arm supports, and particularly relates to a concrete pump truck arm support, a concrete pump truck arm support assembly and a concrete pump truck. The arm support comprises a first arm section, one end of an arm section oil cylinder is hinged with the first arm section, and the other end is hinged with the corresponding rotary table so as to drive the lower part of the arm frame to erect; the arm support further comprises a supporting arm section, one end of the supporting arm section is hinged to the root of the first arm section, theother end is hinged to the corresponding rotary table, and a hinge shaft of the supporting arm section and the first arm section and a hinge shaft of the arm section oil cylinder and the first arm section are parallel to each other; and a pitching driving device is arranged between the supporting arm section and the corresponding rotary table so as to drive the supporting arm sections to pitch upwards to compensate the height of the corresponding rotary table and drive the supporting arm section to pitch downwards to decrease the height. According to the arm support, arm support assembly and pump truck, the height of the arm support can be reduced, the highest point of the arm support assembly is prevented from restricting the whole vehicle trafficability of the corresponding concrete pumptruck, and the whole vehicle trafficability of the concrete pump truck is improved.

Description

technical field [0001] The invention belongs to the field of concrete pump truck booms, and in particular relates to a concrete pump truck boom, a concrete pump truck boom assembly and a concrete pump truck. Background technique [0002] Concrete pump truck is a special machine for conveying concrete. Its boom assembly includes a turntable and a boom hinged on the turntable. The boom is equipped with a concrete delivery pipe. Through a series of actions such as the rotation and expansion of the boom, the concrete is delivered to the specify the location. [0003] In actual operation, the front of the vehicle is an important construction area. In order to meet the construction requirements directly in front of the vehicle, such as figure 1 As shown, the top of the boom assembly turntable in the prior art is much higher than the top surface of the cab, so that the hinge point of the boom 2 on the turntable 1 is much larger than the height of the top surface of the cab, so tha...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a concrete pump truck boom to solve the technical problem in the prior art that after the concrete pump truck boom is installed on the corresponding car body, the highest point of the boom restricts the vehicle passability of the concrete pump truck The object of the present invention is also to provide a concrete pump truck arm frame assembly to solve the problem that the high point of the boom assembly group restricts the overall construction of the concrete pump truck after the concrete pump truck arm frame assembly is installed on the corresponding car body in the prior art. The technical problem of vehicle passability; at the same time, the present invention also provides a concrete pump truck to solve the technical problem of poor passability of the entire concrete pump truck in the prior art

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