Precautions for the operation and trial load of stage electric hoist

　　1、 Preparation work before trial load

　　(1) Check the appearance of the electric hoist

　　Before conducting the test load, the appearance of the electric hoist should be checked for any damage, deformation, or cracks. At the same time, it is necessary to check for wear, cracks, or deformation in components such as hooks, chains, and wire ropes. If any problems are found, they should be repaired or replaced in a timely manner.

　　(2) Check the electrical system of the electric hoist

　　Check if the electrical system of the electric hoist is functioning properly, including power cords, plugs, switches, controllers, and other components. Ensure that the electrical system is free from short circuits, open circuits, leakage, and other issues. If any problems are found in the electrical system, they should be repaired or replaced in a timely manner.

　　(3) Choose a suitable test load

　　Select a suitable test load based on the rated load of the electric hoist. The weight of the test load should gradually increase to simulate different load situations in actual use. At the same time, the center of gravity of the test load should be on the same vertical line as the hook of the electric hoist to ensure the accuracy and safety of the test load.

　　(4) Determine the testing site

　　Choose a flat, solid, and obstacle free site for trial loading. The testing site should be spacious enough to ensure that the electric hoist has enough space to operate during the testing process. At the same time, the test loading site should be kept away from crowds and flammable and explosive materials to ensure the safety of the test loading.

　　2、 Precautions during the trial load process

　　(1) Requirements for Operators

　　During the trial load process, operators must undergo professional training and be familiar with the operation methods and safety precautions of electric hoists. Operators should wear necessary personal protective equipment, such as helmets, seat belts, gloves, etc. At the same time, operators should remain focused and not leave their operating positions without authorization.

　　(2) Steps and methods for trial loading

　　The trial load should be carried out in the order of empty load, light load, and then heavy load. During the trial load process, the weight of the trial load should be gradually increased, and the increase in weight each time should not be too large. At the same time, attention should be paid to observing the operation of the electric hoist, including lifting speed, descent speed, braking performance, noise, etc. If any abnormal situation is found during the test load of the electric hoist, the test load should be stopped immediately, and inspection and maintenance should be carried out.

　　(3) Safety protection measures

　　During the trial load process, necessary safety protection measures should be set up, such as warning lines, warning signs, etc. At the same time, a dedicated person should be arranged to be responsible for on-site safety supervision to ensure safety during the trial load process. If an unexpected situation occurs during the trial load process, the emergency plan should be immediately activated for emergency rescue.

　　3、 Inspection and maintenance after trial load

　　(1) Check the performance of the electric hoist

　　After the test load is completed, the performance of the electric hoist should be checked for normality, including lifting speed, descent speed, braking performance, noise, etc. If it is found that the performance of the electric hoist has decreased or abnormal conditions during the trial load process, it should be inspected and repaired in a timely manner.

　　(2) Check the components of the electric hoist

　　After the trial load is completed, the components of the electric hoist should be checked for damage, deformation, or wear. At the same time, components such as hooks, chains, and wire ropes should be inspected for cracks, deformations, or wear. If any problems are found with the components of the electric hoist, they should be repaired or replaced in a timely manner.

　　(3) Maintenance and upkeep of electric hoist

　　After the trial load is completed, the electric hoist should be maintained and serviced, including cleaning, lubrication, fastening, etc. At the same time, electric hoists should be regularly inspected and maintained to ensure their stable performance, safety, and reliability.