1． 通过对环链电动葫芦控制系统的操纵，驱动装置将动力能量输入转变为机械能，将作用力和运动速度传递给取物装置。 1. Through the manipulation of link chain electric hoist control system, drive input power energy into mechanical energy, pass force and speed to fetch device. 2． 取物装置再把被搬运物料与起重机联系起来，通过工作机构单独或组合运动，完成物料搬运任务。 Take the material and link the material to the crane, and carry out the material handling task through the work mechanism alone or combined. 3． 可移动的金属结构将各组成部分连接成一个整体，并承载起重机的自重和吊重。 The movable metal structure connects each component to a single integral and carries the crane's weight and weight. 4． 环链电动葫芦的起升机构、运行机构、变幅机构和旋转机构，被称为起重机的四大机构。起重机通过某一机构的单独运动或多机构的组合运动，达到搬运物料的目的。 The hoist mechanism, the operating mechanism, the variable organ and the rotating body, are called the four great institutions of the crane. A crane moves through a single movement of an organization or a combination of multiple agencies to achieve the purpose of carrying material.