Fabricated ballasting device for preventing shield tail from floating upwards

Abstract

The invention provides an assembly type weight device for preventing a shield tail from floating upwards, which comprises force application units oppositely arranged on the two sides of a segment feeder, one side of each force application unit is hinged to the segment feeder, each force application unit comprises a plurality of weight devices arranged along the laying direction of segments, a bearing plate is arranged on the lower side of each weight device, a steel framework is arranged on each bearing plate, and the steel framework is arranged on the lower side of each weight device. A plurality of balance weight grooves are formed in the steel framework, balance weight bodies are detachably arranged in the balance weight grooves, a plurality of walking force transmission wheels are arranged at the bottom of the bearing plate, and the walking force transmission wheels are connected with the pipe pieces in a sliding mode. The device is compact in structure and convenient to use, can be quickly mounted and assembled in a tunnel, is convenient to adjust and control, and ensures high efficiency in the construction process, high duct piece mounting accuracy and stable state.

Description

technical field [0001] The invention relates to the technical field of shield tunneling, in particular to a prefabricated weight device for preventing a shield tail from floating up. Background technique [0002] When the shield machine is excavating in the stratum, the segment that has just come out of the shield tail often floats up locally or as a whole, resulting in unsatisfactory attitude correction effect of the shield machine, misplaced segment and serious damage, and in severe cases, the axis of the formed tunnel is caused. Excessive deviation, etc. The main reasons are as follows: [0003] There is a gap between the excavation diameter of the cutter head and the outer diameter of the segment. If the gap cannot be filled in time by the synchronous grouting slurry, or the initial setting time of the slurry is long, the segment will be exposed to groundwater and injection after it is separated from the shield tail. Slurry and other packages float up; during the advan...

AI Technical Summary

Problems solved by technology

[0007] The invention provides an assembled weight device for preventing the shield tail from floating up, which solves the problem that the assembled and adjusted ballast cannot be quickly applied on site when the segments appear to float up during the shield tunneling process, and the relative weight of the ballast cannot be changed according to requirements. The location, the control effect is poor, and the problem that will affect the construction process

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