Round cutter box capable of having disc cutter replaced bidirectionally

Abstract

The invention relates to the technical field of tunnel boring machine engineering machinery, in particular to a round cutter box capable of having a disc cutter replaced bidirectionally. The round cutter box capable of having the disc cutter replaced bidirectionally comprises a ringlike cutter box body and two cutter shaft fastening units, wherein the ringlike cutter box body is fixed on a cutter disc and is in a cylindrical shape, the cutter shaft fastening units are arranged at the inner side of the cutter box body and are in central symmetry, and each cutter shaft fastening unit comprises a load-bearing guide bar, a limiting guide bar, a wedge-shaped pressing block, a tensioning block, a tension bolt and nuts, wherein each load-bearing guide bar is fixed to the inner wall of the cutter box body, each limiting guide bar is fixed to the inner wall of the cutter box body and arranged in a mode that the limiting guide bar corresponds to the corresponding load-bearing guide bar and a certain included angel is formed between the limiting guide bar and the corresponding load-bearing guide bar, and each wedge-shaped pressing block, the corresponding tensioning block, the corresponding tension bolt and the corresponding nuts are arranged between the corresponding load-bearing guide bar and the corresponding limiting guide bar in a matched mode. By means of the round cutter box, the disc cutter can be replaced from either the back side or the front side of the cutter disc, the cutter is replaced from the back side in the construction process of a tunnel boring machine, the cutter is replaced from the front side in the production, assembling and debugging process of the tunnel boring machine, and the cutter box body of the round cutter box is of a round structure, so that the cutter box body on the cutter disc is made to be capable of saving the space and being subjected to even stress.

Description

technical field [0001] The invention relates to the technical field of tunnel boring machine construction machinery, in particular to a circular cutter box capable of bidirectionally replacing disc-shaped hobs. Background technique [0002] The disc-shaped hob installed on the cutter head is the main tool for excavating the tunnel of the tunnel boring machine. During the construction process of the tunnel boring machine, the hob is a wearable part and needs to be replaced frequently. There are two ways to replace the hob at present, one is to replace it at the front side of the cutter head, and the other is to replace it at the back of the cutter head. [0003] When replacing the hob in front of the cutterhead, the cutterhead of the tunnel boring machine needs to be moved back a certain distance, and personnel enter the gap between the cutterhead and the tunnel face for replacement. This kind of operation not only has the risk of face instability, but also has the disadvant...

AI Technical Summary

Problems solved by technology

At present, the shape of the tool box that can be used for back tool change is rectangular. The rectangular tool box is a panel structure, and stress concentration is easy to occur at the four corners of the rectangle. The overall structure of the disc; in addition, the rectangular tool box that can meet the tool change on the back has a larger size in the direction of the long side of the rectangle, which leads to a reduction in the overall strength of the cutter head when more tool boxes are arranged on the cutter head

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