为了防止操作者在某种情况下操作失误,或者桥式起重机的电器、机械的机件突然损坏、失灵,从而造成设备和人身事故。因而桥式起重机必须装有一定的安全装置。 一、过卷扬限制器 过卷扬限制器是防止吊钩、抓斗及攫吊装置在提升过程中,超过最高提升限度而与卷筒相顶撞,致使钢丝绳 In order to prevent the operator in some cases, operational errors, or bridge crane electrical, mechanical parts suddenly damaged, failure, resulting in equipment and personal accident. Therefore, the overhead crane must be equipped with a certain safety device. First, over winch limiter winch limiter is to prevent the hook, grab and grab lifting device in the lifting process, exceeding the maximum lifting limit and the drum phase collision, resulting in rope