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选煤厂的原煤入洗和精煤进仓所用的皮带运输机一般具有运输量大、距离长、倾斜安装的特点,为了防止生产中负载时突然停车,所以必须设置皮带逆转装置。目前通常在电动机轴端装置闸轮,采用电磁制动。这种制动方式虽然使用方便,工作灵活可靠,但缺点是要消耗一定的电力,闸轮和闸瓦磨损较快,需要经常更换,制动机构需要经常调整。尤其当电磁
Belt conveyors for raw coal washing and coal storage in coal preparation plants generally have the features of large volume, long distance and inclined installation. In order to prevent the sudden stop of the load during production, a belt reversing device must be provided. At present, usually in the motor shaft device gate brake, the use of electromagnetic brake. Although this braking mode is easy to use and work flexibly and reliably, the disadvantage is that it consumes a certain amount of power and the brake pads and brake shoes wear faster and need to be replaced frequently. The brake mechanism needs to be adjusted frequently. Especially when the electromagnetic