Hollow pipe

A hollow tube and tube wall technology, applied in the field of hollow tubes, can solve the problems that half parts cannot be folded into sheets, the transportation volume is small, and the occupied space is large.

Inactive Publication Date: 2007-06-06
邱则有
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the half part of this hollow thin-walled member cannot be folded into a plate shape, so the space occupied during transportation is still re...

Method used

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Embodiment Construction

[0049] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0050]As shown in the accompanying drawings, the present invention includes an annular pipe wall 1 and a sealing plate 4, and is characterized in that the annular pipe wall 1 is a pipe wall that can be folded into a plate shape, and the longitudinal folding part of the pipe wall is movable. The hinge 2 and the sealing plate 4 are connected to the pipe wall as male and female grooves 5 . In each accompanying drawing, 1 is a tube wall, and 2 is a living hinge. In the following accompanying drawings, those with the same numbering have the same description. As shown in Figure 5, the ring-shaped pipe wall 1 is a pipe wall that can be folded into a sheet shape, the longitudinal folding part of the pipe wall is a living hinge 2, and the sealing plate 4 is connected to the pipe wall as a male and female groove 5. .

[0051] The invention is characterized in t...

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PUM

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Abstract

The present invention relates to a hollow pipe, in particular, it relates to a square hollow pipe. It includes upper pipe wall plate, lower pipe wall plate and two side pipe wall plates which are mutually connected together and formed into the invented square hollow pipe. It is characterized by that every two adjacent pipe wall plates are connected by means of movable hinge, so that said square hollow pipe can be folded into the laminated plate form. Said folded square hollow pipe is convenient for transportation, and can be used for in-situ casting various reinforced concrete or prestressed reinforced concrete hollow slabs, hollow floor, roof, foundation bedplate, wall body and open-web bridge, etc.

Description

(1) Technical field [0001] The invention relates to a hollow tube. (2) Background technology [0002] At present, in the prior art, the hole-forming member of the cast-in-place reinforced concrete hollow slab is a permanent mandrel, such as a paper tube, a plastic tube, a metal bellows, and a mandrel made of lightweight materials. These tubular mandrels or components are mainly considered to evacuate the concrete and reduce the weight of the hollow slab. For example, the patent No. ZL99249775.8 applied by the applicant is a utility model patent named "fiber-reinforced thin-walled tube for filling cast-in-place reinforced concrete". It consists of a hard thin-walled tube and plugs at both ends. The two ends of the hard thin-walled tube are closed to form a closed cavity. The hard thin-walled tube wall is composed of a carcass and a cementing material. The carcass can be glass fiber or carbon fiber or organic fiber or non-woven fabric or fiber For braided fabrics, the bondin...

Claims

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Application Information

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IPC IPC(8): E04B5/16E04B5/36E04C1/00
Inventor 邱则有
Owner 邱则有
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