The rated load capacity of the chain in the fixed-speed stage hoist forms a precisely linked mechanism with the overall overload protection system of the hoist. When the lifting weight of the fixed-speed stage hoist exceeds the rated load capacity of the chain, the overload protection system will instantly trigger a chain reaction: on one hand, the driving motor of the hoist will immediately cut off power and stop running, avoiding irreversible damage to the chain caused by continuous overload; on the other hand, the built-in mechanical braking device will quickly lock the chain, preventing the

heavy objects from loosening and slipping due to overload. This fundamentally eliminates safety accidents such as equipment falling and casualties caused by chain breakage due to overload. This "dual protection" design ensures the stability of the fixed-speed stage hoist chain under extreme load conditions, providing the first safety barrier for stage construction and truss lifting operations.
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