1, according to the nameplate, overloading is strictly prohibited. When only a part of the pulley is used, the load is correspondingly reduced.

2. Before use, the pulley should be inspected for necessary disassembly and lubricated.

3. When selecting pulleys, attention should be paid to the matching of the groove diameter and the wire rope diameter. Generally, the wheel groove diameter should be larger than the wire rope diameter1-5 mm. When the number of pulleys is large (more than 5), the double tap threading method should be preferred, and when the traction machinery is insufficient, the big flower threading method should be preferred.

4, calculation of wire rope running force, must meet the traction conditions of traction machinery. In order to calculate the amount of rope, it is necessary to meet the rope accommodation conditions of traction machinery. The minimum distance condition between the moving pulley and crown block must be met.

5, meet the maximum allowable deflection conditions of running rope in and out of pulley.