托辊按其用途分类为调心托辊、缓冲托辊、槽形托辊、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形调心托辊，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，它州苗木 保定通风管道 丝网立柱模具 尼龙输送带 保定空压机 高碑店养老院装在承受压力的下端故称下托辊。
Idlers are classified into centering idlers, buffering idlers, groove idlers, and parallel idlers according to their purpose. The function of the centering roller is to correct the deviation of the belt conveyor. Usually, a rotary groove shaped centering roller is installed on the heavy-duty section of the conveyor, and a parallel centering roller is installed on the unloaded section. The buffer roller is applied to the tail frame of the machine according to the actual situation. When receiving materials, it can reduce the impact of materials on the belt, which is beneficial for the service life of the long belt. The groove roller is generally composed of two side rollers and one flat roller, with a groove angle of 30 degrees. For detachable belt conveyors, the three rollers of the groove roller are hinged together, hence it is called the articulated roller. The parallel roller is generally a long roller, which is installed at the lower end under pressure, hence it is called the lower roller.
托辊在材质上分为钢质和塑料托辊两种。托辊的轴承座有铸铁的和钢板冲压的和酚醛塑料等三种。
There are two types of rollers in terms of material: steel rollers and plastic rollers. There are three types of bearing seats for idlers: cast iron, stamped steel plate, and phenolic plastic.
托辊的密封有钢和塑料之分。它们的密封都是内部填充润滑脂。托辊的好坏直接影响带式输送机的电能消耗和皮带的寿命。因此防尘密封，润滑良好是重要使用标准。
The sealing of the roller can be divided into steel and plastic. Their seals are internally filled with lubricating grease. The quality of the roller directly affects the electrical energy consumption and belt life of the belt conveyor. Therefore, dustproof sealing and good lubrication are important usage standards.