Novel TBM hob cutter ring

• Main Authors: GOU BIN, MOU SONG, DUAN WENJUN, ZHOU ZHONGRONG, SU YEMAO, ZHANG MENGQI, MO JILIANG, ZHANG LONGGUAN
• Format: Patent
• Language: Chinese; English
• Published: 05.11.2021
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; GALLERIES; LARGE UNDERGROUND CHAMBERS; MINING; SHAFTS; TUNNELS

The invention discloses a novel TBM hob cutter ring, and belongs to the field of TBM hobs. The novel TBM hob cutter ring aims to solve the problems that in the prior art, a disc-shaped flat-head hob is large in rock contact area, rock is excessively broken, and the rock breaking specific energy is high. The novel TBM hob cutter ring comprises a cutter ring base body; a cutter hub mounting hole is formed in the center of the cutter ring base body; a cutting edge is machined on the outer edge of the cutter ring base body; main blades are machined on the two sides of the cutting edge; pressure relief grooves are uniformly formed in the cutting edges around the axis of the cutter ring; blade teeth are formed among the pressure relief grooves; and secondary blades are formed on two sides of the blade teeth. The novel TBM hob cutter ring aims at reducing the contact area of the hob cutter ring and rock, reducing the thrust of a cutter head, changing the shape and stress distribution of a dense core, reducing the tr