In many fields of high-altitude operations, operators need to hang on the anti fall device rope to prevent falling from high altitude. Generally, anti fall devices are of the differential speed anti fall type, which uses a pair of elastic claws to connect to the rotating disc and cooperate with the internal gear disc linked to the bracket. When the rope is rapidly pulled down, the pawl is released by centrifugal force and locks the inner gear plate, causing the rotating plate to stop rotating and preventing personnel from falling. However, this type of stopping mechanism has a sudden action, and the impact force of the sudden stopping of the falling personnel is very strong, which may strain the human body. Moreover, if the operator moves too fast during normal work, the stopping mechanism may also suddenly stop the personnel, causing other accidents and affecting production safety. The country has established an external buffer as a transitional period. EMET is the first to introduce built-in buffering. In order to solve the problems of high impact force and low safety performance, the country actively encourages enterprises to develop Fall Arrester With Shock Absorber, responds to the national call, and increases research and development efforts. In 2020, it was the first to launch a built-in buffer type fall arrester in China, with product performance leading the industry.
Fall Arrester With Shock Absorber includes a housing, a bracket, a rotating disc, and a steel wire rope. The bracket is built into the housing, the rotating disc is connected to the bracket, and the steel wire rope is wound on the rotating disc. The end of the steel wire rope is exposed from the housing and connected to a hook. There are two anti rotation teeth hinged on the rotating disc, and an elastic connecting piece is set between the two anti rotation teeth to make them elastically retract. The bracket is fixedly connected to an inner toothed disc that corresponds to the anti rotation teeth, and the inner toothed disc is equipped with a friction plate, forming a friction buffering speed difference anti fall mechanism.
The principle and advantages of the Fall Arrester With Shock Absorber
During the falling process, the inner gear plate is slowly rotated and frictionally stopped by the centrifugal force exerted on it through the anti rotation teeth. It does not immediately lock, thus creating a buffering stage, reducing the impact force of the anti fall, preventing human injury, and preventing personnel from moving too quickly and being suddenly pulled, improving safety and ensuring operation safety. The setting of the friction plate ensures the stability of the inner gear plate, and the two anti rotation teeth are elastically retracted through an elastic connection piece, overcoming the noise of the ratchet wheel constantly hitting the end of the pawl when winding the steel wire rope in existing similar products, ensuring no noise during operation.
