Hoisting and overturning method of super-large cross-section rectangular pipe joint and its applicable device

Abstract

The invention discloses a hoisting and turnover method for an ultralarge section rectangular pipe joint and an applicative device thereof. The method comprises the following steps that the pipe jointis connected with a vertical lifting tool; the vertical lifting tool and pin holes in the left side and the right side of the pipe joint are connected through bearing pins, and the vertical lifting tool and the pipe joint are fixed; the pipe joint is connected with a horizontal lifting tool; and the horizontal lifting tool is mounted on a lifting system, the lifting system drives the horizontal lifting tool to move to the position above the pipe joint, the horizontal lifting tool is connected with the pin holes in the left side and the right side of the pipe joint through bearing pins, and thehorizontal lifting tool and the pipe joint are fixed. Through cooperative use of the horizontal lifting tool, the vertical lifting tool and a turnover frame, actions horizontal lifting, turnover andvertical lifting of the pipe joint are achieved. Before the pipe joint turns over, a turnover shaft of the vertical lifting tool is used as the support to achieve turnover, the vertical lifting tool effectively converts two-point supporting force generated during the turnover action into multi-point stress on the pipe joint, and the situation that the pin holes of the pipe joint are damaged due totoo large local stress during the turnover action is avoided.

Description

technical field [0001] The invention relates to the technical field of pipe joint hoisting, in particular to a method for hoisting and overturning a rectangular pipe joint with a super-large section and an applicable device thereof. Background technique [0002] The rectangular pipe jacking method for construction of urban underground tunnels has the advantages of no traffic interruption, little environmental impact, and low construction cost compared with the traditional "open cut and buried method". It has been widely used in underground pipe gallery projects and expressway underpasses. Engineering, urban road pedestrian crossing channel project, subway entrance and exit channel project and other urban construction. However, with the rapid development of cities, the demand for large sections of rectangular tunnels has also been rapidly increased, and the width of tunnel sections has gradually increased from the initial 6m (pedestrian passage) to 10m (two-lane) and even 15m...

AI Technical Summary

Problems solved by technology

However, with the rapid development of cities, the demand for large sections of rectangular tunnels has also been rapidly increased, and the width of tunnel sections has gradually increased from the initial 6m (pedestrian passage) to 10m (two-lane) and even 15m (three-lane). Hoisting and transportation of pipe joints brings great challenges

[0003] Due to the large cross-sectional size of the super-large rectangular pipe section, the weight of each section exceeds 100 tons. From the production of the pipe section, transportation transition, on-site end face treatment, hoisting and downhole installation, it needs to go through horizontal hoisting, vertical turning, and vertical hoisting, etc. There are multiple working conditions, the existing hanger for rectangular pipe joints, such as the application number 201910217301.2, and the patent name is a kind of turning hanger and turning method for prefabricated pipe gallery pipe joints, which are only suitable for lifting small pipe joints with light weight. The form is no longer suitable for the lifting and transportation of large-section and heavy-duty pipe joints, especially during the overturning action. The conventional way of overturning the pipe joints is to use two pin holes supporting the pipe joints on two overturning shafts. risk of breakage, fall

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