启闭机是用于各类大型给排水、水利水电工程。用于控制各类大、中型铸铁闸门及钢制闸门的升降达到开启与关闭的目的。
Hoist is used in various large water supply and drainage, water conservancy and Hydropower projects. The utility model is used for controlling the lifting of various large and medium-sized cast iron gates and steel gates to achieve the purpose of opening and closing.
启闭机按类型分为：液压启闭机，卷扬启闭机，门机，手轮启闭机，手摇启闭机，螺杆式启闭机等。
Headstock type is divided into: hydraulic hoist, hoist hoist, door machine, hand wheel hoist, hand hoist, screw hoist and so on.
启闭机结构特点：
Hoist structure features:
1、启闭机包括电机、启闭机、机架、防护罩等组成；采用三级减速方式，用螺旋付传动，输出转距更大。启闭机配套钢架克服土建不平整，以减少整机噪声及振动。
1, headstock gear, including motor, headstock, rack, shield and other components; using three speed reduction method, with spiral drive, output greater distance. The hoist is equipped with steel frame to overcome the unevenness of civil construction so as to reduce the noise and vibration of the whole machine.
2、采用户外型长时工作制电机，防护等级≥IP155。行程控制机构采用十进制计数器原理，控制行程的误差0.5%。转距保护控制是通过蜗杆产生轴向位移触动微动开关，来达到保护电器的原理。
2, outdoor with long working motor, protection grade is greater than or equal to IP155. The travel control mechanism adopts the decimal counter principle, and the error of the control stroke is 0.5%. The distance protection control is to achieve the principle of protecting electric equipment by generating axial displacement of the worm and touching the microswitch.
3、操作维护简便，可实现现场和远控操作。
3, convenient operation and maintenance, can realize on-site and remote control operation.