Automatic connection device and construction method for supporting arch nodes of fabricated underground engineering

Abstract

The invention discloses an assembled underground engineering support arch frame joint automatic connection device and a construction method. The device comprises a fixed guide plate and a pressure bearing plate which are respectively fixed at the two ends of one section of arch frame, wherein the guide plate and the pressure bearing plate are provided with mutually matched pin shaft connecting mechanisms; the arch frames are connected through the pin shaft connecting mechanisms; a dismountable automatic eject-out device is arranged in the combined pressure bearing plate; through the effect of an inside spring, the front end of a fixing pin extends out of a hole; when the fixed guide plate rotates around the movable pin shaft, a vertical plate guide structure extrudes the fixing pin; the spring inwards contracts; when the two steel plates are attached, the fixing pin ejects out and is clamped with the pin hole of the guide vertical plate; the jionts are tightly locked and connected; the clamping connection of the joints is realized. The assembled underground engineering support arch frame joint automatic connection device has the advantages that the structure is simple; the welding and the installation are convenient; the device is applicable to different arch frames; the number of workers and the work intensity are reduced; the field construction safety is improved; the favorable conditions are provided for arch frame support mechanical construction; the underground engineering support development progress is further promoted.

Description

technical field [0001] The invention relates to an automatic connecting device and a construction method for an assembled underground engineering supporting arch node. Background technique [0002] In recent years, with the continuous development of cities, my country's underground engineering construction has achieved world-renowned achievements, and has become the largest country in the world in terms of scale and speed of underground engineering construction. At the same time, the level of design and construction technology has also been greatly improved. With the rapid development of construction scale and speed, the requirements for the construction safety and efficiency of the initial support of underground engineering are getting higher and higher. However, the steel arch frame used as the support of underground engineering in my country is still manually installed on site. A large number of workers are required to carry out long-term high-intensity construction operat...

AI Technical Summary

Problems solved by technology

Most of the existing arch frames are connected by flanges and sleeves, and a large amount of manual work is required for on-site installation.

[0005] (2) Poor safety and slow construction speed

During the arch connection process, workers need to carry out long-term construction in the unsupported space, which is difficult to guarantee safety, and manual assembly is time-consuming and laborious, which seriously affects the construction speed

[0006] (3) None of the existing arch connection methods can match the mechanized on-site construction of the arch

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