Composite joint for concrete pump truck boom

A technology of concrete pump trucks and composite materials, which is applied in the processing of building materials, construction, building construction, etc., and can solve problems such as inaccurate positioning of metal bushings, fiber damage at bolt connection holes, and insufficient strength of local materials. , to achieve the effects of easy implementation, compact structure and increased connection strength

Active Publication Date: 2014-07-30
AEROSPACE RES INST OF MATERIAL & PROCESSING TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, composite materials are generally used to directly connect with bolts, or in order to improve local strength, composite materials are used to embed metal bushings in the connection position, and then connected with bolts. The fiber damage is serious, which reduces the load-bearing effect; (2) Because the composite mat

Method used

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  • Composite joint for concrete pump truck boom
  • Composite joint for concrete pump truck boom
  • Composite joint for concrete pump truck boom

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Experimental program
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Embodiment Construction

[0022] Below in conjunction with accompanying drawing and specific embodiment the present invention will be described in further detail:

[0023] Such as figure 1 Shown is a structural schematic diagram of the concrete pump truck arm section related to the present invention. The composite boom section consists of a skeleton 1, a concrete delivery pipeline 2, a connecting bolt 3, a hydraulic mechanism 4 and a connecting pin 5; the skeleton 1 includes a large end joint at one end, a main body at the middle and a Small end connector;

[0024] The concrete delivery pipeline 2 is fixed on the side of the main body of the skeleton 1 through the connecting bolt 3; one end of the hydraulic mechanism 4 is movably connected to the bottom surface of the main body of the skeleton 1, and the other end of the hydraulic mechanism 4 is movably connected to one end of the connecting pin 5 , the middle part of the connecting pin 5 is movably connected to a connecting hole of the small end joi...

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PUM

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Abstract

The invention relates to a composite joint for a concrete pump truck boom and belongs to the technical field of concrete pump truck boom connection. The joint is of a composite sandwich structure and comprises a composite skin, a core material and a metal tenon, wherein the metal tenon is embedded in the core material, one end surface of the metal tenon is flush with the end surface of the core material, and the composite skin is positioned outside the core material and the metal tenon; the core material performs a shaping function, and the metal tenon and the composite skin are used as main bearing parts. According to the joint, higher structural efficiency can be obtained at lower mass cost to an utmost degree through the structure and size variation of a resin matrix composite, the core material and the tenon.

Description

technical field [0001] The invention relates to a composite material joint for a concrete pump truck boom, belonging to the technical field of concrete pump truck boom connection. 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 jib commonly used in the market is generally composed of 4-arm sections to 6-arm sections connected end-to-end in sequence. The boom part stretches greatly during work. It is a cantilever beam structure in mechanics, and the force is more complicated. The connection of the composite material jib section structure It is a great test. [0003] Due to the high specific strength and specific stiffness characteristics of composite materials, it is a light-weight and high-efficiency material. There have been exploration...

Claims

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Application Information

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IPC IPC(8): E04G21/04
Inventor 王建昌张会杰宋世伟冷霜尤洁颜鸿斌游少雄许晓燕
Owner AEROSPACE RES INST OF MATERIAL & PROCESSING TECH
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