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井下运输皮带机由于滚筒、托滚摩擦过热等原因,引起皮带火灾事故时有发生,其燃烧速度比一船巷道火灾的扩展快得多,而且燃烧时产生大量有毒害气体,对生产及工人的生命安全威胁极大。如果采用不延燃皮带,就能使一旦发生的皮带火灾局限化,产生的有毒害气体也少,减轻对人体安全及国家财产的威胁。 滚筒摩擦试验(图),是对皮带不延燃性试验的有效方法之一。其试验方法是将皮带试验片围包在旋转着的钢制滚筒上,一端固定,另一端悬挂荷重,判断直到皮带破断为止的时间内,有没有发生着火或者高温状态。
Belt conveyor belt due to drum, roller friction overheating and other causes of belt fire accidents have occurred, the burning rate of fire than the expansion of a much faster laneway fire, burning and produce a large number of toxic gases, the production and workers Life-threatening threat If you do not extend the belt, you can make the event of a belt fire limited, toxic gases generated less, reduce the threat to human safety and state property. Roller friction test (Figure) is one of the effective ways to test the belt without flame retardancy. The test method is to wrap the belt test piece around a rotating steel drum with one end fixed and the other end suspended to determine whether there is a fire or a high temperature during the time until the belt breaks.