Hinged seal grease pipeline structure of shield machine

Abstract

The invention discloses a shield machine hinged sealing grease pipeline structure, which comprises a central shield outer ring, a grease seat integrally formed with the central shield outer ring at the front end, and a hinged seal on the inner side of the central shield outer ring There is a longitudinal grease hole in the grease seat, one end of the longitudinal grease hole communicates with the hinged sealing cavity through a side hole, a horizontal grease hole is arranged in the grease seat, the horizontal grease hole communicates with the longitudinal grease hole, and the other end of the longitudinal grease hole One end is welded with a plug. The hinged sealing grease pipeline structure of the shield machine of the present invention has a simple, compact and reasonable structure. The outer ring of the middle shield and the grease seat are integrally formed. The rounding treatment of the plate rolling machine can meet the requirements of use, completely avoid the phenomenon of weld cracking, greatly improve the quality of the outer ring of the shield, reduce manufacturing costs, and improve work efficiency.

Description

technical field [0001] The invention relates to the technical field of shield machines, in particular to a shield machine hinged sealing grease pipeline structure. Background technique [0002] The hinge seal grease pipeline on the shield machine is a pipeline for injecting seal grease into the hinge seal cavity. The hinge sealing grease pipeline on the existing shield machine is arranged in a separate grease seat, and the sealing grease is injected into the hinge sealing cavity through the hole on the grease seat. However, when making the grease seat, it is first necessary to gas-cut the grease seat installation hole on the outer ring of the center shield, and then weld the grease seat to the installation hole, but welding and installing the grease seat will cause local deformation of the center shield outer ring, and due to the welding There is welding stress in the position, which leads to cracking of the weld seam around the grease seat. The production of the above grea...

AI Technical Summary

Problems solved by technology

However, when making the grease seat, it is first necessary to gas-cut the grease seat installation hole on the outer ring of the center shield, and then weld the grease seat to the installation hole, but welding and installing the grease seat will cause local deformation of the center shield outer ring, and due to the welding There is welding stress in the position, which will cause cracks in the weld seam around the grease seat. The production of the above grease seat is not only time-consuming and laborious, but also greatly affects the product quality.

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