Rotary disc for segment selection of shield tunneling machine

Abstract

The invention discloses a rotary disc for segment selection of a shield tunneling machine. The rotary disc comprises a stator and a rotor which are both disc-shaped, the stator is connected with the center of the rotor through a rotating shaft arranged at the center of the stator, the rotor can rotate by 360 degrees relative to the stator by centering on the rotating shaft, 12 positioning points are distributed on the upper surface of the stator uniformly along the circumferential direction, a circular ring taking the center of the rotor as the circle center is arranged on the upper surface of the rotor and composed of six areas which are connected, the connection sequence of the six areas is in accordance with the assembly sequence of segments in each circle, and a 'T'-shaped pointer is further arranged on the upper surface of the rotor. Only the rotor needs to be rotated to place a horizontal section of the 'T'-shaped pointer on the rotor at the minimum tail clearance position or maximum cylinder stroke position, so that a segment top sealing block can be positioned conveniently, quickly and accurately, and directives for construction are given quickly to guide construction.

Description

technical field [0001] The invention belongs to the technical field of shield machines, and in particular relates to a turntable for segment selection of shield machines. Background technique [0002] At present, in the construction of shield tunneling projects, the selection of segments is an important construction step. At the present stage, shield engineering technicians process logs or steel pipes into various segment styles in proportion, and realize the segment selection by simulating the segment assembly process. Inconvenience and other disadvantages. The shield tunneling project constructed under the guidance of existing technology can only be completed by relying on the theoretical support of segment assembly design and the spatial imagination ability of technicians. In the process of segment selection, the spatial imagination of technicians is different. Some construction workers often cannot get the accurate assembly point after hard thinking, especially for beg...

AI Technical Summary

Problems solved by technology

In the process of segment selection, technicians have different spatial imagination abilities, and some construction workers often cannot come up with accurate assembly points even after hard thinking, especially for beginners, they cannot quickly and correctly select the position of the capping block, resulting in Segment selection errors, point assembly errors, resulting in the already small shield tail gap becoming more tense, causing the outer edge of the segment to be pulled apart, serious water leakage in the formed tunnel, and seriously affecting the appearance quality of the tunnel, etc.

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