The multi-rope friction hoist mainly consists of a motor, reducer, friction wheel, braking system, depth indicator, speed and overspeed protectionsystem, and control system. It can be driven by either an AC or DC motor. When using a low-speed motor, the reducer is not required, as the motor can be directly connected to the drum spindle, or the motor rotor can be mounted at the end of the drum spindle.
The braking system is a critical component to ensure safe hoist operation. In emergency situations, the hydraulic braking system provides a two- stage adjustable braking torque, allowing the hoist to stop safely and smoothly without excessive impact. For AC motor-driven hoists, the braking system also features highly sensitive torque adjustment to precisely control the operating speed when approaching the stopping point.
According to installation type, multi-rope friction hoists are divided into tower-mounted and floor-mounted models. They are mainly used in coal mines, metal mines, and non-metal mines for vertical shaft lifting of materials, personnel, and equipment.
Since the supporting electrical equipment is non-explosion-proof, these hoists are not suitable for environments with gas, coal dust, or other flammable and explosive media.
The JKMD and JKM series floor-mounted multi-rope friction hoists are designed and manufactured in compliance with: Q/HBWF006-2024 (Enterprise Standard for Multi-rope Friction Hoists)AQ1036-2007 (Safety Inspection Specifications for Multi-rope Friction Hoists in Coal Mines) GB/T10599-2023 (National Standard for Multi-rope Friction Hoists)Coal Mine Safety Regulations
This hoist adopts the principle of flexible friction transmission. The wire rope is wrapped around the friction pulley, and the lifting or lowering of heavy loads and personnel is achieved through the frictional force between the rope and the friction lining.
