The manual chain hoist, a common lifting device, is widely used across various industries due to its portability and high efficiency. Whether it is for hoisting stage lighting and audio equipment during stage construction, lifting exhibition props in booth setup, or moving small heavy loads in factory workshops, this compact and easy-to-operate tool has become an indispensable asset for on-site operations.
Beneath its seemingly simple mechanical structure, however, lies a critical component directly related to life safety-the friction plate. Though small in size and uncomplicated in structure, this part serves as the last line of defense in the entire safety protection system of the manual chain hoist. Any performance degradation or complete failure of the friction plate can directly lead to brake malfunction, triggering severe safety incidents such as heavy load falling, which poses a fatal threat to the lives of on-site personnel and the property safety of surrounding equipment.
During the operation of a manual chain hoist, always pay close attention to the equipment's running noise and braking response. If you hear abnormal slipping sounds or friction noises during braking, or notice sluggish brake reaction and slight downward movement of the heavy load, these are likely "warning signs" of friction plate performance degradation or malfunction. In such cases, immediately stop all lifting operations, take the device out of service, and arrange for professional personnel to conduct a comprehensive inspection and maintenance. Only after the fault is completely eliminated can the operation be resumed.