It is necessary to regularly check the use of the trolley line. Generally, the trolley line needs to check the angle steel brackets once a year to keep the angle steel brackets parallel.

Check the wear of the collector. When the brush head of the collector wears more than two-thirds, it is necessary to replace the collector or replace the carbon brush of the collector;

Check whether the aluminum joints, joint sheaths, hanging racks and other accessories of each trolley line are in good condition and whether they are loose. If there is, it needs to be replaced in time. Before checking these accessories, be sure to cut off the main power supply to avoid unnecessary safety hazards.