Fixing device for PCCP (prestressed concrete cylinder pipe) construction

Abstract

The invention discloses a fixing device for PCCP (prestressed concrete cylinder pipe) construction. The fixing device comprises a bottom box, a pair of first stand columns, a transverse plate, a pair of second stand columns, four clamping mechanisms, a pair of first winding drums and a first rope body. The transverse plate is horizontally erected between the pair of first stand columns, and the two ends of the transverse plate are slidably connected with the pair of first stand columns correspondingly; the pair of second stand columns is located between the pair of first stand columns and arranged on the top face of the bottom box in a sliding mode; the four clamping mechanisms are connected with the bottom face of the transverse plate, the top face of the bottom box and the two opposite sides of the pair of second stand columns correspondingly; the pair of first winding drums are horizontally arranged in the bottom box and rotate reversely; and one end of the first rope body is wound on one of the first winding drums, sequentially penetrates through the interiors of the four clamping mechanisms and is wound on the other first winding drum, and the winding directions of the first rope body on the pair of first winding drums are opposite. The fixing device is applicable to construction of PCCPs with different pipe diameters, and has the beneficial effects of being convenient to adjust and high in stability.

Description

technical field [0001] The invention relates to the technical field of water conservancy construction. More specifically, the present invention relates to a fixture for PCCP pipeline construction. Background technique [0002] Prestressed steel cylinder concrete pipe (PCCP) is a water pipe made of steel plate, prestressed steel wire, concrete and cement mortar through steel cylinder forming, concrete pouring, application of prestress control technology, protective layer spraying, etc. It has high Sealing, high strength and high impermeability characteristics. [0003] PCCP is widely used in water conservancy projects such as long-distance water transmission trunk lines, urban water supply projects, and sewer pipes of power plant circulating water projects. When laying PCCP pipes, in order to prevent the pipe from shifting, a clamp ring is usually set on the pipe, but this kind of clamp ring is very easy to shift, the stability is poor, and the laying effect is affected. In...

AI Technical Summary

Problems solved by technology

When laying PCCP pipes, in order to prevent the pipe from shifting, a clamp ring is usually set on the pipe, but this kind of clamp ring is very easy to shift, the stability is poor, and the laying effect is affected. In the construction of water supply and drainage projects, PCCP pipes After the installation is completed, the laid water supply pipeline needs to be hydrostatically tested in sections. The hydrostatic test includes filling and pressurizing the pipeline, which will increase the pressure on the clamp ring, further affect the stability, and increase the difficulty of construction.

At the same time, the existing pipeline fixing devices cannot be applied to the construction of PCCP pipelines with different diameters, and the applicability is poor

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