As an indispensable core sound reinforcement device for various performance activities, stage audio is responsible for delivering stage sound effects and ensuring an optimal auditory experience. It can amplify various audio signals such as human voices and musical instrument sounds on stage, effectively overcoming the distance limitations of sound propagation and enabling audiences in different areas of the venue to clearly capture every sound detail. Prior to the official lifting operation, a series of preparatory work and safety checks are essential, which serve as the core prerequisite for preventing lifting accidents.
First of all, the staff must accurately confirm the actual weight of the audio equipment to be lifted. Accurate data can be obtained by consulting the product manual of the audio equipment or using professional weighing tools. Then, compare the data with the rated load parameters of the stage hand chain hoist to ensure that the weight of the audio equipment does not exceed the maximum load-bearing capacity of the hand chain hoist. Overloading must be resolutely prohibited-overloading may not only cause chain breakage and component damage of the hand chain hoist, but also lead to serious safety accidents such as audio equipment falling, endangering the lives of on-site personnel and the safety of equipment and property. Secondly, a comprehensive pre-operation inspection of the stage hand chain hoist is required. Focus on checking whether the chain has damages such as rust, deformation or fracture, whether the anti-disengagement device of the hook is intact and effective, and whether the transmission components run flexibly. If any abnormalities are found, the hoist must be immediately taken out of service for maintenance or replacement. At the same time, it is also necessary to check the load-bearing performance of the stage truss, confirm that its connection points are firm and reliable and can bear the total weight of the audio equipment and the hand chain hoist, so as to avoid overall collapse caused by insufficient load-bearing capacity of the truss.