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托辊是胶带输送机的主要基础部件之一。本文阐述了托辊结构型式和主要技术要求，并对提高托辊使用寿命进行了探讨。
The idler roller is one of the main basic components of the belt conveyor. This paper describes the roller structure and the main technical requirements, and to improve the service life of the roller were discussed.