Heading machine main bearing outer ring and heading machine main bearing

Abstract

The invention discloses a heading machine main bearing outer ring and a heading machine main bearing. The heading machine main bearing outer ring comprises an outer ring body and a ferrule raceway which are split, wherein the ferrule raceway is provided with a raceway surface used for making contact with a roller of the main bearing in a matching mode, a groove is formed in the matching surface, used for matching with the ferrule raceway, of the outer ring body, an elastic buffer device is embedded in the groove and is used for making contact with the ferrule raceway so as to buffer the stressof the ferrule raceway, the heading machine main bearing outer ring is applied to the heading machine main bearing, and when a main shaft bears huge impact force, the buffer device is stressed to deform, so that the ferrule raceway becomes a floating raceway to buffer the stress of the ferrule raceway and improve the impact resistance of the main bearing, the main bearing is not easy to damage under the action of external impact force, the service life of the heading machine main bearing is prolonged, and the safety and reliability of heading machine construction are improved, The heading machine main bearing is not prone to damage under the action of the external impact force and has longer service life.

Description

technical field [0001] The invention relates to the technical field of bearing structures, and more specifically relates to an outer ring of a roadheader main bearing. In addition, the present invention also relates to a roadheader main bearing comprising the above-mentioned roadheader main bearing outer ring. Background technique [0002] Roadheader, also known as TBM (Tunnel Boring Machine), is a new type of advanced tunnel construction machine integrating drilling, tunneling, support and other functions. widely used. [0003] The roadheader uses rotary cutters for excavation. The rotary cutters are installed on the main bearing of the roadheader through the cutter head. The main bearing of the roadheader supports the cutter head and transmits the excavation power to the cutter head to provide positive Reverse digging power, and at the same time bear the reaction force generated by the cutter head when digging. [0004] However, because the TBM machine is usually used f...

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Problems solved by technology

[0004] However, because the TBM machine is usually used for tunnel excavation work in hard rock environment, it is subject to a large load, that is, the main bearing of the roadheader is a typical low-speed and heavy-duty bearing. Therefore, during the construction process of the roadheader, the main bearing of the roadheader The inner and outer ring raceways and rollers of the bearing are prone to fatigue damage or wear, which will lead to the failure of the main bearing of the roadheader

[0005] After the main bearing of the roadheader fails, it needs to be dismantled and replaced. Due to the limitation of the construction environment, it is necessary to dig a shaft hanging opening of sufficient size above the construction tunnel to disassemble and replace the main bearing through the shaft space. Significantly increased the construction time and economic loss of the roadheader

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