托辊的基本类型 The basic type of the roller 托辊是带式输送机的重要部件，种类多，数量大。作用是支承皮带，减少皮带运行阻力，并使皮带的垂直度不超过一定限度以保证皮带平稳地运行。 The roller is an important part of belt conveyor. The function is the supporting belt, reduces the resistance of the belt, and makes the belt more vertical than certain to keep the belt running smoothly. 托辊按其用途分类为调心托辊、缓冲托辊、槽型托辊、平行托辊。调心托辊的作用是纠正带式输送机的跑偏，通常输送机的重载段上安装回转式槽型调心托辊，空载段上安装平行调心托辊。缓冲托辊是根据实际情况应用于机尾架上的，受料时，可以降低物料对皮带的冲击，有利于沿长皮带的使用寿命。槽形托辊一般由两个侧托辊和一个平托辊组成，槽角度一般为30度，对于可拆卸式的带式输送机，槽形托辊的三个托辊互相铰接在一起，故称铰接托辊。平行托辊一般为一个长辊，它安装在承受压力的下端故称下托辊。 The roller is classified as the adjustment roll, cushioning roller, groove roller and parallel roller. Self-aligning roller is to correct the action of running deviation of belt conveyor, conveyor often overloaded section is installed on the self-aligning roller rotary groove, the light is installed on parallel self-aligning roller. The cushioning roller is based on the actual situation, which can reduce the impact of the material on the belt, which is beneficial to the service life of the long belt. Grooved roller generally consists of two side of roller and a pinto roller, groove Angle is 30 degrees commonly, for removable type belt conveyor, three roller trough idlers hinged together each other, therefore calls articulated roller. The parallel roller is usually a long roll, which is mounted on the lower end of the pressure.