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　　There are a wide variety of suspenders, and semi-closed hook sets are very common among various suspenders of lifting machinery. Semi-closed hook sets are often suspended on the steel rope of the lifting mechanism by means of pulley sets and other components.

　　Due to the characteristics of the lifting industry itself, the weight of the lifting objects is often very heavy. Once decoupled, a serious accident will occur. Therefore, there are strict and complex requirements in terms of operation and daily maintenance. Next, let’s take a look at the safety precautions of the lifting hook:

　　1. Basic safety requirements

　　1. Adhere to daily pre-shift inspections and pay attention to any defects that may affect safety during the work.

　　2. Properly deal with hook defects that do not affect the performance of use before use.

　　3. For defects that affect performance, the crane manager should be reported to the crane manager in a timely manner and the hook should be replaced.

　　4. The threads of the semi-closed hook group shall not be corroded.

　　5. Welding and repairing defects of the hook are not allowed.

　　2. Daily inspection and maintenance should include at least the following contents:

　　1. Keep the main and secondary hooks clean.

　　2. Lubricate the pulley. When the oil nozzle is installed, the rotating part and other parts with butter nozzles are rotated.

　　3. All bolts and screws remain in a specified tightening state to ensure that all opening pins are complete and the opening is opened.

　　4. Check whether the pulley grooves and rim are worn uniformly, and check whether the pulley is loose or shaking. If there is any, it means that the bearing or bushing is damaged and should be replaced in time.

　　5. Check the matching of the semi-enclosed hook group wire rope and the wheel groove. The excessively thick wire rope will fracturing the pulley rim, which will in turn lead to aggravation of the wire rope and pulley. The wheel groove must be larger than the diameter of the wire rope, and the wheel groove should be smooth.

　　There are a wide variety of suspenders, and semi-closed hook sets are very common among various suspenders of lifting machinery. Semi-closed hook sets are often suspended on the steel rope of the lifting mechanism by means of pulley sets and other components.

　　Due to the characteristics of the lifting industry itself, the weight of the lifting objects is often very heavy. Once decoupled, a serious accident will occur. Therefore, there are strict and complex requirements in terms of operation and daily maintenance. Next, let’s take a look at the safety precautions of the lifting hook:

　　1. Basic safety requirements

　　1. Adhere to daily pre-shift inspections and pay attention to any defects that may affect safety during the work.

　　2. Properly deal with hook defects that do not affect the performance of use before use.

　　3. For defects that affect performance, the crane manager should be reported to the crane manager in a timely manner and the hook should be replaced.

　　4. The threads of the semi-closed hook group shall not be corroded.

　　5. Welding and repairing defects of the hook are not allowed.

　　2. Daily inspection and maintenance should include at least the following contents:

　　1. Keep the main and secondary hooks clean.

　　2. Lubricate the pulley. When the oil nozzle is installed, the rotating part and other parts with butter nozzles are rotated.

　　3. All bolts and screws remain in a specified tightening state to ensure that all opening pins are complete and the opening is opened.

　　4. Check whether the pulley grooves and rim are worn uniformly, and check whether the pulley is loose or shaking. If there is any, it means that the bearing or bushing is damaged and should be replaced in time.

　　5. Check the matching of the semi-enclosed hook group wire rope and the wheel groove. The excessively thick wire rope will fracturing the pulley rim, which will in turn lead to aggravation of the wire rope and pulley. The wheel groove must be larger than the diameter of the wire rope, and the wheel groove should be smooth.