descent control device

descent control device

Product Information

  • Name : descent control device
  • SKU : BLT-30
  • Category : descenders

The slow descent device is a specialized self-rescue escape apparatus for high-rise fire emergencies. It is a reciprocating lifesaving device, mainly composed of a wire rope reel, a damping speed control main unit, a safety belt, and a fixed hanging strap. The overall structure is compact and can be wall-mounted on windowsills or anchor points on walls. It comes in single-person and multi-person reciprocating models. By relying on an internal mechanical friction structure, it controls the descent speed uniformly and can be reused. It is suitable for situations in high-rise residential buildings, office buildings, hotels, and other structures where people cannot evacuate via staircases during a fire, allowing them to slowly descend from windows for escape. It is a standard fire escape device for households and buildings.

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descent control device

Working Principle Inside the main unit of the device, a centrifugal damping friction braking mechanism is installed. When a person wearing a safety harness is suspended at the end of the rope and falls, the steel cable drives the internal wheel to rotate at high speed. The centrifugal block expands under centrifugal force, pressing against the friction surface. The friction counteracts the gravitational force of the fall, controlling the descent speed within a safe range and preventing rapid falls and injuries. After reaching the bottom, pulling the other end of the rope retrieves the lifting unit back to the rooftop, allowing repeated use for multiple people to escape in sequence. Application Areas 1. Residential buildings: Emergency escape from windows in high-rise residential buildings when elevators are out of service and stairwells are filled with smoke during a fire. 2. Commercial buildings: Self-rescue and evacuation of trapped individuals in hotels, office buildings, and apartment complexes during sudden fires. 3. Fire rescue assistance: Firefighters can use the descent device to quickly descend from high floors for search and rescue operations. 4. Old buildings without fire escape routes: Serves as a basic backup escape tool in scenarios lacking stairwell fire safety facilities.