The measures to ensure the safety of stage electric hoists in different scenarios are as follows: Indoor Theater Scenario - **Pre - use Inspection**: Carefully check whether the mechanical components of the electric hoist, such as gears, chains, and drums, are worn or loose. Examine whether the wires of the electrical system are damaged, aged, and whether the insulation is good. Check if safety devices like limiters and brakes are sensitive and reliable. Also, inspect whether the suspension points on the top of the stage are firm and if their load - bearing capacity meets the requirements. - **Implementation of Operating Specifications**: Assign dedicated operators. The operators must undergo professional training and be familiar with the equipment's performance and operation procedures. Lift loads strictly in accordance with the rated load, and do not overload. Ensure that the items are firmly bundled and the center of gravity is balanced during lifting. During the lifting and lowering processes, operate smoothly and avoid sudden stops and starts. - **On - site Management and Maintenance**: Set up obvious safety warning signs and prohibit unrelated personnel from entering the operation area. Regularly maintain the electric hoist, clean dust and oil stains, replace worn - out parts in a timely manner, and take measures such as moisture - proofing for the electrical system and preventing rodent damage. Indoor Multifunctional Hall Scenario - **Consideration of Venue Layout**: Before use, based on the layout of the multifunctional hall and the activity requirements, reasonably plan the running route and lifting position of the electric hoist to avoid collisions with lighting equipment, audio equipment, stage decorations, etc. - **Personnel Communication and Coordination**: Since various activities may be held in the multifunctional hall, involving the collaboration of multiple teams, the operators need to maintain close communication with event planners, stage setup personnel, etc., to ensure accurate information transfer and safe and orderly operation. - **Attention to Environmental Factors**: Pay attention to changes in indoor temperature and humidity. In a humid environment, strengthen the moisture - proof treatment of electrical equipment. When the temperature is high, pay attention to the heat dissipation of components such as the motor and reducer of the electric hoist to prevent overheating and damage. Outdoor Open - air Stage Scenario - **Response to Severe Weather**: Stop the operation before the arrival of severe weather such as thunderstorms, strong winds, and heavy rains. Fix and protect the electric hoist, for example, cover the electrical part with a rainproof cloth, raise and fix the hook. In case of strong winds, judge whether to continue the operation according to the wind force. Generally, when the wind force exceeds level 6, the lifting operation should be stopped. - **Stabilization of Ground Foundation**: Check whether the ground foundation of the stage is solid and flat to prevent the electric hoist from shaking or tilting during operation due to uneven ground. If the stage is built on soft ground, reinforce the ground, such as laying steel plates. - **Safety of Temporary Power Supply**: Ensure that the installation of the temporary power supply line meets safety standards. The wires and cables should be laid overhead or buried to avoid getting wet or being crushed. Set up a leakage protection device and regularly check whether the grounding resistance meets the requirements. TV Studio Scenario - **Electromagnetic Environment Assessment**: Due to the large number of electronic devices in the studio, there may be electromagnetic interference. Before using the electric hoist, assess the on - site electromagnetic environment to ensure that the electrical system of the electric hoist will not be interfered with, resulting in control failures and other problems. Take shielding measures if necessary. - **Requirements for Precise Operation**: Program recording in the studio usually has high requirements for stage effects, so the operation of the electric hoist needs to be more precise. The operators should undergo special training, be familiar with the equipment layout and program process in the studio, be able to perform accurate lifting, translation, and other operations according to the director's requirements, and closely cooperate with other departments such as lighting and camera.

- **Equipment Cleaning and Maintenance**: The studio has high requirements for environmental cleanliness. Regularly clean the electric hoist to prevent dust, oil stains, etc., from polluting the studio environment. This is also beneficial to the heat dissipation and normal operation of the equipment.