When using the elevator, it is sometimes necessary to use the rapid descent, so how to carry out the rapid descent?

在确保电气接线无误，调整两个电动机转动一致。电源供电正常的情况下，把升降控制开关接到吊笼顶部平台上进行人操作空载试运行操作控制开关使吊笼在导轨架上下运行数次，吊笼运行平稳，无跳动、异响等故障，同时进一步检查导向轮、齿轮等啮合接触情况，正常后工作额载试运行，操作方法同上，并进一步检查电 动机、减速器的发热情况，在全部情况正常后允许投入正常安装运行。

After ensuring that the electrical wiring is correct, adjust the rotation of the two motors to be consistent. When the power supply is normal, connect the lifting control switch to the platform on the top of the cage for human operation and no-load test run. The control switch enables the cage to run on and off the guide rail frame for several times. The cage runs smoothly without jumping, abnormal noise and other faults. At the same time, further check the meshing contact of the guide wheel and gear. After normal operation, conduct the rated load test run. The operation method is the same as above, and further check the heating of the motor and reducer, It is allowed to put into normal installation and operation after all conditions are normal.

对于新安装的施工升降货运机，还应作超载25%的静载实验10分钟，检查吊笼各主梁刚度，及导向轮定位坚固等是否可靠，发现问题应及时解决。在施工升降货运机各部安装就绪后，在试运转同时应分别调整各部件相对位置及行程开关转臂长度，再分述如下隙调整后可进行吊笼运行实验。

For the newly installed construction lifting freight machine, the static load test with 25% overload shall be conducted for 10 minutes to check whether the rigidity of each main beam of the cage and the positioning of the guide wheel are reliable. Any problems found shall be solved in time. After the installation of each part of the construction lifting freight machine is completed, the relative position of each part and the length of the rotating arm of the travel switch shall be adjusted respectively during the test run, and then the cage operation test can be carried out after the following gap adjustment.

确保切断主机电源，然后把驻动电机与减速器连接的检查盖拆下，用撬棒插入机组连轴器连孔内，撬动时需要同时用手打开电动机尾端制动器的松闸并进行二次撬动准备，如次往复撬动使吊笼上升1m左右，与此同时检查吊笼在导轨架上的上升情况。

First, make sure to cut off the power supply of the main machine, then remove the inspection cover connected between the parking motor and the reducer, and insert the crowbar into the coupling hole of the unit coupling. When crowding, it is necessary to manually open the brake at the end of the motor and prepare for the second crowding. If the second reciprocating crowding makes the lifting cage rise by about 1m, at the same time, check the lifting of the lifting cage on the guide rail frame.

并随时调整各滚轮位置，使吊笼齿轮与齿条啮合位置准确，运行平衡，各滚轮与导轨架立柱管接触均匀，无碰撞等现象，然后用手轻拉松闸门把手，使吊笼缓缓下降，以上操作重复一次，确认可运行后，方可进行机械驱动试车。

The position of each roller shall be adjusted at any time to ensure that the meshing position of the cage gear and rack is accurate and the operation is balanced, and the contact between each roller and the guide rail frame column tube is uniform without collision, and then the gate handle shall be gently opened to make the cage slowly lower. The above operations shall be repeated once, and the mechanical drive commissioning can be carried out only after it is confirmed that it can be operated.

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