手电两用启闭机自身具有结构简单、安装方便、价格实惠等优点。该启闭机主要应用于灌溉渠道等地方，也可以在某些引水工程中作为闸门的启闭工具使用。现如今，有些工程项目中会有相关的保护措施去防护顶闸事故的发生，也有很多的工厂会在启闭机的上边安装上限位开关，但是尽管是这样，这个限位开关也只是起到了一个限位的作用，在使用的时候也会出现一些由于不注意而产生的压弯螺杆等情况。如果顶端的启闭机出现此意外情况的话还会将混凝土的上梁部分造成破坏，或者是启闭机的横梁出现旋转、位移、倾斜等现象，这种意外情况的出现很可能会出现职工伤亡的情况，或者是电机烧毁的情况发生。这样的情况不仅会对安全运行造成影响，也会使得职员的安全遭到威胁。
The dual-purpose flashlight hoist has the advantages of simple structure, convenient installation, and affordable price. This hoist is mainly used in irrigation channels and other places, and can also be used as a gate opening and closing tool in some water diversion projects. Nowadays, some engineering projects have relevant protective measures to prevent the occurrence of top gate accidents, and many factories install upper limit switches on the top of the hoist. However, despite this, this limit switch only serves as a limit, and some situations such as bending screws may occur due to carelessness during use. If this unexpected situation occurs with the top hoist, it may also cause damage to the upper beam of the concrete, or the crossbeam of the hoist may rotate, shift, tilt, etc. This unexpected situation is likely to result in employee injury or motor burnout. This situation not only affects the safe operation, but also poses a threat to the safety of employees.
所以我们要注意，要将手电两用启闭机出现事故的原因了解清楚，我们要了解人为操控或是非人为操控出现事故的原因了解一下，从而减少危险事故的发生。接下来我们就来大致介绍一下各种事故出现的原因。
So we need to pay attention to understanding the causes of accidents in dual-purpose flashlight hoists. We need to understand the reasons for accidents caused by human or non-human control, in order to reduce the occurrence of dangerous accidents. Next, let's roughly introduce the causes of various accidents.
人为操控出现事故的原因很可能是操作员工作不认真造成的，亦或者是原操作者或者是后操作者不在岗位，带班人员对启闭机程序不清楚不熟悉而盲目操作出现的事故。
The reason for accidents caused by human manipulation is likely due to the operator's careless work, or it may be due to the original operator or the subsequent operator not being on duty, and the shift leader being unclear or unfamiliar with the opening and closing machine program and blindly operating the accident.
非人为操控时，出现的原因一般是在闸门运行的过程中，遇到了一些石块、漂浮物等障碍物冲到了闸槽中，然后卡住，这个时候如果进行关闭闸门的话，闸门会因为未达到指定位置而产生反力。同时闸门未到相应的位置并不会给操作人员提示，所以启闭机会继续进行下关的动作。这时反作用力承受不住的话就会出现顶闸的事故。
When operated by non-human factors, the common cause is that during the operation of the gate, some obstacles such as stones and floating objects rush into the gate slot and get stuck. If the gate is closed at this time, it will generate a reaction force because it has not reached the designated position. At the same time, if the gate does not reach the corresponding position, it will not prompt the operator, so the opening and closing machine will continue to perform the downward closing action. If the reaction force cannot be sustained at this time, a top gate accident may occur.