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Device for forming diameter-expanded prefabricated hole

A technology of prefabricated holes and driving rods, which is applied to the on-site preparation of building components, formwork/template/work frame, construction, etc., can solve problems such as weak shear strength, strengthen connection performance, increase mechanical engagement Easy and fast installation

Active Publication Date: 2017-03-29
HUAQIAO UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In prefabricated buildings, anchor holes (prefabricated grouting holes or connection holes) must be reserved for the connection positions of components. Strict requirements often require other compensatory measures

Method used

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  • Device for forming diameter-expanded prefabricated hole
  • Device for forming diameter-expanded prefabricated hole
  • Device for forming diameter-expanded prefabricated hole

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Embodiment Construction

[0024] The present invention will be further described in detail below with reference to the drawings and embodiments.

[0025] In order to solve the prior art lack of a prefabricated hole device that is convenient for installation and disassembly, and cannot balance the contradiction between convenient operation, shear strength, and grouting process, the present invention provides a device for forming expanded diameter prefabricated holes, such as figure 1 , figure 2 As shown, it includes a spreading device, an elastic sleeve 40, and a driving rod. The driving rod is connected with the spreading device, and the elastic sleeve 40 is sleeved outside the spreading device; the drive rod is pressed in, and the spreading device and the driving rod are linked to expand, from The middle position expands the elastic sleeve 40 outwards; the drive rod is drawn out, the expansion device and the drive rod are linked to contract, and the elastic sleeve 40 is reset. Before pouring concrete int...

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Abstract

The invention relates to a device for forming a diameter-expanded prefabricated hole. A diameter-expanded profile with the big middle and the small two ends can be formed through a expanding device, the device for forming the diameter-expanded prefabricated hole is mounted on the prefabricated hole position of a component before concrete is poured to the prefabricated component, after hardening, the expanding device contracts, a die is disassembled, the expanding device can be easily taken out from the cured prefabricated component, and the diameter-expanded prefabricated hole is manufactured; and the connecting performance between a later grouting material and the hole wall can be enhanced, the mechanical bite force between the grouting material and the prefabricated hole is enhanced, and the shear resistance and the anchor performance after the prefabricated slurry anchor component is connected are enhanced. According to the device for forming the diameter-expanded prefabricated hole, the slope of rhombus inclined edges obtained after the prefabricated hole is formed is controlled by adjusting the position and the length of a fixing arm or the length of a sliding groove, and the device has the beneficial effects of being convenient and fast to mount and high in control accuracy and is especially suitable for being used in mass production in a factory.

Description

Technical field [0001] The invention relates to a civil engineering tool, and more specifically, to a device for forming an enlarged diameter prefabricated hole. Background technique [0002] In recent years, the State Council has issued relevant documents to vigorously promote the construction and application of fabricated structures. The prefabricated structure is prefabricated in the processing plant according to the design dimensions, and assembled by hoisting on site. It has the advantages of less environmental pollution, low noise, fast construction speed, saving workload, and less affected by environmental factors. In prefabricated buildings, anchor holes (prefabricated grouting holes or connecting holes) must be reserved for the connection position of the components. The anchor holes are mostly straight holes or internally threaded holes, which are convenient to make and dismantle the mold, but the shear strength is weak. The requirements are strict and other remedial m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G15/04
CPCE04G15/04
Inventor 王卫华董毓利王冬晔霍静思
Owner HUAQIAO UNIVERSITY
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