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目前,国内有的煤矿,集中上山的单滚筒驱动胶带输送机,因发生过飞车事故而采取减少张紧重量的办法,使机器停车时,首先由机械抱闸将驱动滚筒闸死,让胶带在滚筒表面滑动摩擦,逐渐耗尽下运煤、胶带、转动部件的动能,使机器停车。这个办法在客观上起着滑动摩擦的作用,因此也可以称为滑动摩擦制动。但这种方法尚存在如下弊病,即由于张紧重量减小,运转中有时胶带打滑,打滑处滚筒与胶带接触部位温升很高,有引起燃烧和瓦斯爆炸的危险;打滑也使胶带及包胶滚筒急骤磨损。为
At present, some domestic coal mines and single-roller driven belt conveyors that are concentrated in the mountains adopt a method of reducing the tension weight due to a speeding accident. When the machine is stopped, the driven brake is first blocked by a mechanical brake to let the adhesive tape Roller friction sliding surface, the lower coal, tape, rotating parts of the kinetic energy, the machine parking. This approach objectively plays the role of sliding friction, it can also be called sliding friction braking. However, this method suffers from the following drawbacks: since the tension weight is reduced, the tape sometimes slips during operation, and the temperature rise at the contact portion of the drum and the tape at the slipper poses the risk of combustion and gas explosion; the slippage also causes the tape and the bag Plastic drum sharp wear. for