A Quickly Disassembled Sliding Bearing Raise Drilling Rig Inserted Hob

Abstract

The invention discloses a sliding bearing raise-boring machine inserted tooth hob capable of being disassembled quickly. The sliding bearing raise-boring machine inserted tooth hob capable of being disassembled quickly comprises a hob shell, a hob shaft and a rock breaking inserted tooth. The hob shell and the hob shaft are connected through a sliding bearing. The rock breaking inserted tooth is installed on the outer side wall of the hob shell. The hob shell is designed in a spilt mode, a hob shell core is forged by bearing steel and has higher impact resistance, and the surface on which thehob shell core is in contact with the sliding bearing can be subjected to chromizing to improve the wear resistance of the surface; an outer hob shell is forged with a single metal wear-resistant material to further improve the mechanical properties of the outer hob shell, and a split structure can make full use of the advantages of the two materials and simplify the bimetal casting process, so that manufacturing cost of the hob shell is reduced. When the rock breaking inserted tooth is worn and needs to be replaced, the outer hob shell and the hob shell core can be quickly disassembled by thesliding bearing and replaced with a new hob outer shell and a new hob shell core, and then the new hob outer shell and the new hob shell core are mounted on the hob shaft through the sliding bearing.

Description

technical field [0001] The invention relates to the technical field of mine exploration. Specifically, it is a quick-detachable insert hob for a sliding bearing raise drilling rig. Background technique [0002] In extremely hard rock conditions, the existing cemented carbide rock-breaking hobs wear fast and have a low service life, and the life is limited to the wear of the rock-breaking inserts. When the rock-breaking inserts reach the end of their service life, all rock-breaking hobs need to be replaced , the cost is extremely high. Simultaneously, the outer wall surface of the cutter casing of the rock-breaking hob in contact with the rock face requires high wear resistance, but the surface of the cutter casing in contact with the sliding bearing should have high impact resistance. In the prior art, in order to meet the dual requirements of the wear resistance and impact resistance of the knife shell, it is necessary to use a single metal wear-resistant material or a bi...

AI Technical Summary

Problems solved by technology

In the prior art, in order to meet the dual requirements of the wear resistance and impact resistance of the knife shell, it is necessary to use a single metal wear-resistant material or a bimetal casting material. The single-metal wear-resistant material must take into account the dual requirements of wear resistance and impact resistance. Expensive, with limited material choices; bimetallic casting materials require a bimetallic casting process, which is very complex and costly

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