The following are the selection precautions and usage instructions for the electric hoist dedicated to the conference hall:
Selection Precautions
1. Load - bearing Capacity
Determine the rated lifting capacity of the electric hoist based on the heaviest equipment or items to be lifted in the conference hall. It is necessary to reserve a certain safety margin. Generally, it is recommended that the actual operating weight does not exceed 80% of the rated lifting capacity. For example, if lighting equipment weighing 500 kg often needs to be lifted, an electric hoist with a rated lifting capacity of 1 ton or higher can be selected.
2. Lifting Height
Measure the distance from the ceiling of the conference hall to the lowest position where lifting is required to determine the lifting height of the electric hoist. Also, consider whether additional height is needed for installation and debugging, etc. Usually, the lifting height should be 1 - 2 meters higher than the actual demand.
3. Operating Speed
For the conference hall, if it is mainly used for installing and disassembling equipment, etc., the speed does not need to be too fast. Generally, a lifting speed of 5 - 10 meters per minute is more appropriate. If some rapid stage scene - switching operations are also required, an electric hoist with a two - speed function can be selected, with a high - speed of 10 - 20 meters per minute and a low - speed of 1 - 5 meters per minute.
4. Drive Method
Common drive methods include electric drive and chain drive. Electric drive runs smoothly, has low noise, and high efficiency, making it suitable for conference halls with high requirements for environmental noise. Chain drive is relatively more durable and has a lower maintenance cost, but it may produce some noise. A comprehensive consideration can be made according to the budget and usage frequency.
5. Control System
Give priority to selecting an electric hoist with an advanced control system, such as wireless remote control, wired remote control, or a control method integrated with the conference hall's intelligent system. This facilitates precise control by operators at different positions, and it is necessary to ensure that the control system is sensitive and safe and reliable.
6. Safety Devices
It must be equipped with complete safety devices, such as overload protection devices, limit switches, chain breakage protection, etc. The overload protection can prevent the electric hoist from operating when it exceeds the rated load. The limit switch can prevent the hook from exceeding the upper and lower limit positions. The chain breakage protection can prevent the heavy object from falling when the chain breaks.
7. Brand and After - sales Service
Choose electric hoists from well - known brands. Their product quality, craftsmanship, and reliability are more guaranteed, such as Demag, Konecranes, etc. At the same time, pay attention to after - sales service, including the warranty period, maintenance response time, spare parts supply, etc., to ensure that problems can be solved promptly during use.
Usage Instructions
1. Installation and Debugging
- Before installation, carefully read the installation instructions to ensure that the installers have professional knowledge and skills. Install it strictly in accordance with the requirements to ensure that the installation position of the electric hoist is correct and firmly fixed.
- After installation, conduct debugging. Check whether all components are operating normally, such as the motor, chain, braking device, etc. Adjust the limit switch to an appropriate position to ensure that the lifting and lowering range meets the requirements.
2. Operation Specifications
- Operators must undergo professional training, be familiar with the operation methods and safety precautions of the electric hoist, and hold the corresponding operation certificates.
- Before operation, check whether the appearance of the electric hoist is damaged, whether the chain is deformed or worn, and whether all safety devices are effective. Start the operation only after confirmation.
- During operation, operate smoothly, avoid sudden acceleration or deceleration, and strictly prohibit overloading, diagonal pulling, sudden starting and sudden stopping, and other illegal operations.
- During the lifting process, ensure the stable center of gravity of the heavy object, avoid shaking and collision. The operator should always pay attention to the state of the heavy object and the surrounding environment.
- When the electric hoist runs to the limit position, the limit switch will automatically stop the operation. At this time, do not force the operation. Check the cause and make adjustments before continuing to use.
3. Maintenance and Upkeep
- Regularly clean the electric hoist to remove surface dust, oil stains, etc., and keep the equipment clean.
- Lubricate each lubrication part, such as chains, gears, bearings, etc., according to the specified time and requirements to ensure smooth operation and reduce wear.
- Regularly inspect all components of the electric hoist, such as the elongation and wear of the chain, the insulation performance of the motor, the reliability of the braking device, etc. Replace or repair in a timely manner when problems are found.
- When not in use for a long time, cut off the power supply. After a comprehensive inspection and maintenance of the electric hoist, store it properly to prevent moisture, rust, etc.
When selecting and using the electric hoist dedicated to the conference hall, fully consider the actual needs and safety factors of the conference hall, and strictly abide by relevant specifications and requirements to ensure its safe, reliable, and efficient operation.