Socket and spigot embedded self-fastening type steel and plastic compound full-swing-direction dragging pipe

Abstract

The invention discloses a socket and spigot embedded self-fastening type steel and plastic compound full-swing-direction dragging pipe. The socket and spigot embedded self-fastening type steel and plastic compound full-swing-direction dragging pipe comprises steel pipes, limiting rings, connecting parts, elastic rings and seal rubber rings. Two ends of the steel pipes are provided with spigot segments and socket segments, the spigot segment of the previous steel pipe is inserted into the socket segment of the later steel pipe in every two adjacent steel pipes, the limiting rings are fixed to the spigot segments, one ends of the connecting parts are clamped to the socket segments, the elastic rings are embedded between the other ends of the connecting parts and the limiting steel rings, thespigot segments and the socket segments are in fastening connection, and the seal rubber rings are embedded in gaps between the spigot segments and the socket segments. According to the socket and spigot embedded self-fastening type steel and plastic compound full-swing-direction dragging pipe, the drawing force is large, the dragging distance is long, the pipe is suitable for 360-degree full-orientation swing, and the swing angle is large.

Description

Technical field [0001] The invention relates to the field of non-excavation pipeline construction with a diameter, in particular to a self-fixing steel-plastic composite full swing-direction dragging pipe with a socket and an embedded self-fixing. Background technique [0002] It is more and more difficult to bury DN80-DN1000 underground pipelines across urban roads, highways, railways, lakes and rivers. The emergence of the directional drilling drag construction method avoids road excavation and damage to other underground pipelines, and at the same time reduces the impact of underground pipeline construction on traffic and the environment. [0003] The directional drilling drag construction method is adopted, and the directional drilling trajectory is three-dimensional "snake-shaped" parabola. The length of the drag pipe of the directional drilling drag construction method ranges from tens of meters to thousands of meters. During the production process of the drag pipe, due to t...

AI Technical Summary

Problems solved by technology

The length of the dragging pipe in the directional drilling and dragging construction method ranges from tens of meters to thousands of meters. During the production process of the dragging pipe, due to the requirements of storage and transportation, the dragging pipe needs to be cut into sections. During construction, the short section of pipe needs to be connected into A long tube that meets the requirements and has the physical properties of being able to bend, while the existing drag tube generally uses a flexible HDPE plastic tube or a welded steel pipe that sacrifices the length to obtain the curvature. However, when the plastic material drag tube is dragged for too long , due to the shortcomings of insufficient tensile strength, insufficient surface hardness, and easy adulteration of plastic materials, it is easy to cause quality hazards such as dragged pipes being broken, caliber deformation, and severe scratches on the outer wall of the pipe. The hot-melt welding interface process is complex and tedious. Harsh, etc., while welded steel pipes are generally connected by five-oil three-cloth external anti-corrosion and interface welding process. When used to drag the pipe, the length is sacrificed to obtain the curvature and a large waste of materials increases the cost. Dragging and scraping in the hole with five oils and three cloths cannot meet the anti-corrosion requirements, which affects the service life of the pipeline, and the welding process is complicated and tedious, and the requirements are high.

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