将链盒与电机连接并固定。将链盒前端的U形架固定到扭簧中心支架上面的木板上并居中，连接链盒。用带眼角钢做成“∏”支架，下端与电机用M8连接固定，上端用两个M8×70㎜的膨胀螺栓固定到天棚上。用M6.4×16㎜的自攻钉将钩座固定到顶门板顶部的中间位置上，连接钩子。接上电源，观察电机的运行情况，调整上下行程。
Connect and fix the chain box to the motor. The U-shaped frame at the front end of the chain box is fixed on the board above the torsion spring center bracket and centered to connect the chain box. The "bracket is made of angle steel with eyes. The lower end is connected with the motor by M8, and the www.zhangjiakoubanjia.cnwww.foxiangdiaoke.cnwww.yanglaoyua.cnwww.shiguanyin.cnwww.luomazhu.net.cn www.xingtaibanjia.com.cnupper end is fixed to the ceiling with two expansion bolts of M8*70_. The hook base is fixed to the middle position of the top of the top door plate with the self-tapping nail of M6.4 *16, and the hook is connected. Connect the power supply, observe the operation of the motor, adjust the up and down journey.