Accurate welding device for lock catch longitudinal seams between small-diameter pipe roofing pipes and construction method

Abstract

The invention relates to an accurate welding device for lock catch longitudinal seams between small-diameter pipe roofing pipes. The device comprises a walking motor, two sides of the walking motor are respectively provided with a roller group, each roller group comprises a fixed groove roller arranged on the left side of the walking motor and a free groove roller arranged on the right side of the walking motor, the fixed groove rollers and the free groove rollers are connected with the output end of the walking motor through roller shafts respectively, the walking motor is connected with a spring base, the spring base is connected with a welding gun, and the welding gun is connected with a welding machine through a welding machine pipeline set. The accurate welding device can automatically adapt to irregular changes of the operation space in lock catches, the difficulties that the longitudinal linear change of a pipe roofing structure is complex and the operation space between roofing pipes is narrow are overcome, precise welding of the lock catch longitudinal seams of the curved pipe roofing structure is achieved, and the transverse rigidity and integrity of the pipe roofing structure are effectively improved.

Description

technical field [0001] The invention belongs to the technical field of civil engineering, and relates to a precision welding device and a construction method for locking longitudinal seams between small-diameter pipe curtains. Background technique [0002] In the urban environment, when tunnels pass through sensitive structures such as existing tunnels, railways, ground buildings, and historic sites, pipe curtain structures are often used as pre-support, and then underground excavation construction is carried out under the protection of pipe curtain structures. A plurality of curtain tubes (usually prefabricated steel pipes) are jacked in sequence according to specific positions, and then through auxiliary measures such as grouting in the curtain tubes (and between curtain tubes), they are connected into a specific shape of the tube curtain pre-support structure. [0003] The tube curtain structure is formed by jacking up multiple curtain tubes sequentially and connected by ...

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Problems solved by technology

[0006] In order to solve the problems of limited internal space and difficult horizontal connection of small-diameter curtain tubes, the present invention provides a precise welding device and construction method for locking longitudinal seams between small-diameter curtain tubes, and overcomes the problem of pipe curtains by adapting to changes in the operating space of the welding trolley. Due to the engineering difficulties of complicated changes in the longitudinal line of the structure and the narrow operating space between the curtain tubes, the precise welding of the longitudinal joints of the locks between the curtain tubes can be effectively completed; concrete is used to fill the curtain tubes and the gaps between the curtain tubes to form an overall tube curtain structure, which effectively improves Lateral stability and overall stability of pipe curtain structure

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