Adjustment structure of hob installation position for full-face hard rock tunnel boring machine

Abstract

The invention discloses a hob mounting position adjusting structure of a full face hard-rock tunnel boring machine. The hob mounting position adjusting structure comprises a hob supporting spindle and a supporting seat thereof. Two supporting side plates, which are respectively corresponding to two end portions of the hob supporting spindle, are arranged on the supporting seat. One end portion of the hob supporting spindle is supported on each of the two supporting side plates. Each of the two end portions of the hob supporting spindle is connected with the supporting side plate at the corresponding end through a mounting block. Each mounting block is a cylinder with three side faces, and the transverse section of each mounting block is an equilateral triangle. An axis of the hob supporting spindle deviates from the center of each mounting block. Through a corner of each mounting block, a supporting and clamping groove of each mounting block is formed in each supporting side plate, and a wedge block is fastened between one side face of each mounting block and one side wall of the corresponding supporting and clamping groove. The hob mounting position adjusting structure has the advantages that hob mounting height can be adjusted in a limited space, eccentric wear is avoided, accidental damage to tools is reduced, and service lives of the tools prolonged.

Description

technical field [0001] The invention belongs to the technical field of hard rock tunnel boring machine construction machinery, and in particular relates to a hob installation position adjustment structure of a full-section hard rock tunnel boring machine. Background technique [0002] The full-face hard rock roadheader (TBM) mainly relies on the disc-shaped hob installed on the cutter head to roll and break the rock formation on the excavation face. During the construction process, the cutting tool is a wearable part and needs to be replaced from time to time. Due to the different installation radii of different hobs on the TBM cutter head, the wear amount of each knife is different, and the phenomenon of partial wear will occur for a long time. At the same time, in order to avoid TBM vibration, the protruding cutter head of the disc-shaped hob is limited within a certain height, so that the wear amount of the TBM hob is limited. The existing hob installation structure can...

AI Technical Summary

Problems solved by technology

Due to the different installation radii of different hobs on the TBM cutter head, the wear amount of each knife is different, and the phenomenon of eccentric wear will occur for a long time

At the same time, in order to avoid TBM vibration, the protruding cutter head of the disc hob is limited within a certain height, so that the wear amount of the TBM hob is limited

The existing hob installation structure cannot adjust the installation height of the hob, so that the installation height of the hob cannot be adjusted according to specific conditions, which increases the possibility of abnormal damage to the hob

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