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一引言如果要用轴来转动水平(或接近水平)的圆筒形设备时,由于种种原因,往往是不利的、或实际上是不可能的。譬如,化学工业上所通用的圆筒形转窑,有时长达30至40公尺,重达几十吨甚至几百吨。这样巨大的设备,如用轴来转动,则轴径非要1至2公尺粗不可。此外,窑内温度很高(1200至1400℃),轴和幅要求复杂的冷却装置,实际上未必能办到。所以在这类场合以及其他适宜场合里,是在圆筒体上装设两个以上的胎环,而这些胎环则安置于托轮上面。传动方式有两种:其一是将齿轮固定于圆筒体外周,轮动齿轮而驱动圆筒体,
I. INTRODUCTION It is often disadvantageous, or practically impossible, to use a shaft to rotate a horizontal (or nearly horizontal) cylindrical device for a variety of reasons. For example, the cylindrical kiln commonly used in the chemical industry, sometimes as long as 30 to 40 meters, weighing tens or even hundreds of tons. Such a huge equipment, such as rotating with the shaft, the shaft diameter must not be 1-2 meters rough. In addition, the kiln temperature is very high (1200 to 1400 ℃), shaft and amplitude of the complex requirements of the cooling device, in fact may not be able to do so. Therefore, in such occasions and other suitable occasions, the cylinder is equipped with more than two fetal rings, which are placed in the above-mentioned fetal wheel. Transmission There are two ways: First, the gear is fixed to the outer circumference of the cylinder, wheel gear and drive the cylinder,