Composite material boom section for concrete pump truck boom

Abstract

The invention relates to a composite material cantilever section for a cantilever crane of a concrete pump truck and a manufacturing method of the composite material cantilever section for the cantilever crane of the concrete pump truck, and belongs to the technical field of concrete pump trucks. The composite material cantilever section comprises a framework, a concrete conveying pipeline, a connecting bolt, a hydraulic mechanism and a connecting pin shaft, wherein the framework comprises a large end connector located at one end, a main body located in the middle part, and a small end connector located at the other end. The composite material cantilever section for the cantilever crane of the concrete pump truck is stronger in design adaptability, and a higher structure effect is acquired with lower quality cost to the greatest extent through the changes of the designable composite material, structure size and process.

Description

technical field [0001] The invention relates to a composite material arm section for a concrete pump truck arm frame and a manufacturing method thereof, belonging to the technical field of concrete pump trucks. Background technique [0002] Concrete pump truck is a special machine for conveying and pouring concrete. It can continuously convey concrete along the pipeline to the pouring site, and gradually becomes an indispensable key equipment in building construction. At present, the pump truck boom commonly used in the market is generally composed of 4-arm sections to 6-arm sections connected end-to-end in sequence. The structural diagram of the concrete pump truck boom is composed of 5 arm sections connected end-to-end in sequence. Figure 5 As shown, the boom part stretches greatly during work, and it is a cantilever beam structure in mechanics, and the force is more complicated. [0003] The boom section for the concrete pump truck boom includes a boom section frame, a h...

AI Technical Summary

Problems solved by technology

In the prior art, steel is generally used as the boom frame. The disadvantages are: (1) the boom itself has a large structural weight, which increases the load on the chassis of the concrete pump truck, and the effective bearing capacity of the concrete pump truck is low; (2) the boom The heavy weight of its own structure is unfavorable to the anti-vibration performance of the boom of the concrete pump truck; (3) During the long-term operation, the metal fatigue performance is lower than that of the composite material

The characteristic is that the skeleton of the boom section made of composite material is a hollow tubular structure. This molding technology requires a simple structure due to the need for demoulding operability, which limits the designability of the structure and size of the boom section in certain directions.

CN201010524111.4 adopts hot pressing forming process, the forming process is complicated, and the production process cost is high

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