Flexible and rigid pipe universal crushing head and method for pipe explosion method construction

Abstract

The invention discloses a flexible and rigid pipe universal crushing head and method for pipe explosion method construction. A tool bit used for cutting and crushing is arranged on a crushing head main body, and the head of the crushing head main body is slidably provided with a protective cover structure; the protective cover structure is internally provided with a casing pipe, and the casing pipe is fixedly connected with the crushing head main body; a main sliding groove is machined in one end of the casing pipe, and combined slideway structures are reversely and symmetrically machined on the inner side wall of the other end of the casing pipe; elastic unlocking pieces are arranged in the combined slideway structures in a sliding fit mode, and one end of each elastic unlocking piece is connected with a main rope; and the other end of each elastic unlocking piece is connected with an auxiliary rope, and the auxiliary ropes are connected with the protective cover structure. The method can be used for pipe explosion method construction of a pipeline directly connected with a rigid pipe and a flexible pipe under the condition that an inspection well is not added.

Description

technical field [0001] The invention relates to the technical field of pipeline repair construction, in particular to a breaking head and a method for common flexible and rigid pipeline construction by split pipe method. Background technique [0002] Broken (cracked) pipe method is a common method for the repair of urban drainage pipes, which can reduce excavation to a certain extent, and has little impact on urban traffic and civilization. [0003] see figure 1 It is the construction principle diagram. During the specific construction, for rigid pipes such as reinforced concrete, the original pipe is generally broken by using the expanding crushing head. For flexible pipes such as double-wall corrugated pipes, the blade is generally welded at the front of the crushing head for cutting and crushing. . However, due to the lack of strict quality control when some pipelines are buried, there are direct connections between rigid pipes (such as concrete pipes) and flexible pipe...

AI Technical Summary

Problems solved by technology

However, due to the lack of strict quality control when some pipelines are buried, there are direct connections between rigid pipes (such as concrete pipes) and flexible pipes (such as double-wall corrugated pipes) (generally not allowed in the design, but in the old pipe network exist)

In this way, the cracking and cutting crushing heads are not applicable. Generally, the method of building a new inspection well at the pipe changing position is adopted to solve this problem, but the disadvantage is that the excavation volume is increased, the construction period is prolonged, and the repair cost is increased.

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