JTP/JK permanent magnet mine hoists are hoisting winch for metal, non metal mines, suitable for surface yards, inclined roadways, and small to medium vertical shafts. They provide efficient, reliable, continuous hoisting of ore, equipment, and personnel. Compact structure and simple foundation make them ideal for space constrained mining projects.
Structure Features & Working Principle:
Magnet mine hoists new generation core mine hoisting equipment, adopting permanent magnet synchronous motor direct drive technology. Design eliminates intermediate transmission parts reducers couplings, forming ultra compact integrated motor drum drive structure.It surpasses conventional hoists in lifting efficiency, operational reliability, ease of maintenance and space utilization.
Power Generation: Inverter injects phase/frequency controllable 3 phase sine current into PM motor stator → forms rotating magnetic field in air gap.
Direct Drive Coupling: Rotating magnetic field interacts with PM rotor magnets → generates electromagnetic torque. Torque acts directly on drum, no intermediate losses.
Intelligent Control: Control system reads rotor (drum) position via encoder → achieves precise "Position Speed Torque" triple closed loop control:
○Position Loop: Controls final stopping accuracy of skip/cage (±10mm max).
○Speed Loop: Follows preset speed profile (e.g., S-curve) → smooth acceleration/deceleration.
○Torque Loop: Adjusts output torque in real time based on load → enables advanced functions (hold, anti slip).
High Efficiency Direct Drive: Permanent magnet synchronous motor directly drives drum efficiency over 96%. Energy traditional hoists (efficiency below 85%).
Ultimate Reliability: Greatly shortened drive chain → mechanical failure points reduced by >60%. reliability significantly improved.
Compact & Smart: Highly integrated design → footprint reduced 30%-50%. Deep integration dedicated VFD → speed control.
Easy Maintenance: Daily maintenance limited bearings, brakes, control system → workload reduced ~40% vs. conventional units.
