拉绳开关分为手动复位和自动复位两种,务必达到规定的IP级别。
自动复位:动作后能自动回到初始位置,但可能会致使误差启动。
手动复位:动作后有自锁装置能保持在操作位置上,务必手动操作复位遥杆可使其回到原始位置。
拉绳开关是皮带输送机必备的安全保护装置,防止事故扩大而带来重大损失。由于安装便捷,开关转换可靠,在带式运输现场得到广泛运用。
拉绳开关应设置于输送机两边具有检修通道的地区,安装位置应确保维修工人紧急情况下操作便捷。
1、将拉绳开关固定在机架上。
2、一侧的两部开关之间间距为50m上下,采用直径约Φ4的钢丝绳连接,紧松尽可能。
3、为减小钢丝绳自重对开关启动的影响,每隔3m在机架上用一个托环,以支撑钢丝绳。
4、钢丝绳的另一端绑在拉簧上(用绳扣固定),在不影响正常应用下用紧线器将两侧拉绳张紧,以确保两侧张力平衡。
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