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单梁行车的电功葫芦都装有上升限位开关,以防吊钩滑轮上升时撞瘪葫芦外壳。尽管如此,在厂房高度较小的情况下,仍然常常发生电动葫芦顶撞事故,我厂四台单梁行车都先后发生过这种事故。其主要原因是:
Single beam driving electric hoist is equipped with an increase limit switch to prevent the hook pulley rise deflated hoist shell. In spite of this, in the case of smaller plant height, it is still common for electric hoist to collide with an accident. All four single-beam vehicles in our factory have happened this accident in succession. The main reason is: