调心托辊类型及结构特点

Type and structure characteristics of adjusting center roller

综合 1D 75,D X, DT且选型设计手册，可以看出目前较常用的调心托辊主要有槽形调心托辊、锥

Integrating 1D 75, D X, DT and selection design manual, we can see that the most commonly used aligning idlers are grooved aligning idlers and cones.

形调心托辊和摩擦调心托辊。

The shape adjusting roller and the friction center roller.

2.1 槽形调心托辊

2.1 groove center roller

(a) 托 辊 中 心 线 与 胶 带 中心线垂直

(a) the center line of the idler is perpendicular to the center line of the belt.

(b ) 托辊 中心 线 与 胶 带 中心线不垂直， 槽形调心托辊主要依据”)75,D X选型手册，3个槽形辊子和2个小立辊安装在上横梁上，下横梁连接在中间架上，上下横梁通过回转轴连接在一起，胶带跑偏时，带动上横梁绕回转轴旋转一定角度:，此时调心托辊给胶带施加横向推力F,，促使跑偏后的胶带自动回到原位，实现跑偏胶带的自动纠偏，确保胶带对中运行。其特点是在前倾调心的基础上增加了2个挡偏立辊，挡偏立辊可以在跑偏严重的情况下，直接阻止和限制胶带跑偏，促使胶带对中运行，使调心效果更好。

(b) the center line of the roller and the center line of the belt is not vertical, the groove shaped center roller is mainly based on ") 75, D X type selection manual, 3 groove rollers and 2 small vertical rollers are installed on the upper beam, the lower cross beam is connected to the middle frame, the upper and lower beams are connected through the rotating shaft, and when the tape runs off, the upper cross beam revolves around the rotary axis. A certain angle: at this time, the center rollers apply the lateral thrust of the tape to the belt F, which will make the tape after the running deviation back in place automatically, to realize the automatic deviation of the offset tape, and to ensure that the tape is running in the middle. It is characterized by adding 2 deflected vertical rollers on the basis of the forward tune, which can directly prevent and limit the deviation of the tape in the case of serious running deviation, so that the belt will run in the middle and the effect of the adjustment is better.

2.2 锥形调心托辊

2.2 conical aligning roller

锥形调心托辊主要依据DTII选型手册，2个锥形辊子分别安装在各自的回转轴上，2个回转架通过连杆机构实现同步，横梁直接连接在中间架上，胶带跑偏后带动回转架绕回转轴旋转一定角度。，此时调心托辊给胶带施加横向推力Fn,促使跑偏后的胶带回复原位，实现跑偏胶带的自动纠偏，确保胶带对中运行。其特点是把原前倾调心的槽形辊子换成了锥形辊子，由于锥形辊子两端的直径大不同，故辊子旋转时，辊子的大小头与胶带接触处的线速度不同，存在着速度差，从而改变了托辊的受力状况，使胶带跑偏后产生的横向推力增大，调心效果更加明显。由于 锥 形 调心托辊2个回转轴是分开的，回转轴强度较弱，大运量时出现回转轴弯曲现象，另外促使2个回转架实现同步的连杆机构，由于制造、安装等多种因素同步效果不太理想，影响自动调心效果。

The conical center roller is mainly based on the DTII selection manual. 2 tapered rollers are installed on their respective revolving axes respectively. The 2 revolving frames are synchronized through the connecting rod mechanism. The cross beam is directly connected to the middle frame, and the belt drives the rotating frame to rotate a certain angle around the rotary shaft after the belt runs. At this time, the center rollers apply the lateral thrust Fn to the tape, so that the tape after the deviation is back in place, and the deviation of the offset tape will be automatically corrected, so that the tape will run in the middle. It is characterized by changing the groove roller of the original forward tune into a conical roller, because the diameter of the two ends of the tapered roller is different, so when the roller rotates, the speed difference is different between the big head of the roller and the contact of the tape, thus the force condition of the roller is changed, and the lateral thrust of the tape is increased after the belt running. The effect of heart adjustment is more obvious. Because the 2 revolving axes of the conical adjusting roller are separated, the strength of the rotating shaft is weak, the turning axis is bending when the large volume is large, and the connecting rod mechanism that synchronizes the 2 revolving frames is not ideal because of many factors such as manufacturing and installation, which affects the effect of automatic heart adjustment.