High Power Mining Winch
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High Power Mining Winch

The high power mining winch is the core power equipment for heavy-duty operations in large-scale mines. It focuses on scenarios such as heavy-duty towing in open-pit mines, transportation of underground deep equipment, material lifting in thick coal seams, and emergency rescue in mines. Equipped with customized high-power permanent magnet synchronous motors, its output torque can reach several thousand newton-meters. Combined with a reinforced reduction transmission system and wear-resistant drums, it can achieve smooth towing and precise positioning for heavy loads of hundreds of tons, and is suitable for diverse complex environments such as open-pit, underground, high-altitude, and high temperature differences.

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Product Introduction

Application Scenarios & Working Conditions

Operating environment:

Underground: Works in high‑gas, high‑dust, high‑humidity coal/metal mine tunnels. Needs explosion‑proof, dust‑proof, and moisture‑proof design.
Surface: For heavy‑duty lifting at large open‑pit mines. Resists sandstorms, corrosion, and high temperatures.

Mine types:

Coal mines: Meets explosion‑proof requirements for underground gas environments. Used for coal hoisting and roadway heading equipment hauling.
Metal mines: Handles high‑strength ore lifting – capable of continuous heavy‑duty work.

Typical jobs:

Hauling: Moving heavy mining equipment, transporting roof support materials, dispatching large mine cars.
Hoisting: Lifting ore in vertical/inclined shafts, personnel transport, lowering tunneling gear.
Transport: Long‑distance material moving in horizontal tunnels, heavy towing on ramps.
Mounting spots: Shaft top hoist rooms, pit bottom areas, inclined shaft hoist chambers, fixed work platforms at surface mines.

Structure & Key Components

Base load‑bearing structure: One‑piece welded high‑strength frame, box‑beam design – torsional strength 30% higher.

Core functional units:

Drum system: Large‑diameter multi‑layer winding drum (with auto rope guide), high‑strength rope anchor.
Drive system: Hardened helical gear reducer / planetary reducer, diaphragm coupling, heavy‑duty drive shaft.
Brake system: Disc brake + hydraulic power unit, emergency brake energy storage device.
Power system: High‑power explosion‑proof or standard motor, VFD control cabinet.
Safety system: Overload sensor, overwind / overrun protection, slack rope protection.

How It Works & Operating Logic

Load control:

Closed‑loop vector control – monitors rope tension and load in real time.
Constant‑power hoisting / constant torque output – automatically adjusts operating parameters.
Precise speed and position control – improves efficiency and cuts energy use.

Motor drive:

Underground: Flameproof asynchronous motor, 160–1000 kW. Supports VFD speed control.

Surface: Standard asynchronous or synchronous motor, 200–1250 kW. Has soft start.

Reduction & braking:

Reduction: Hardened gear reducer turns high speed low torque into low speed high torque – transmission efficiency ≥92%.

Braking: Two systems – service brake (hydraulic) and emergency brake (spring‑applied). Emergency brake response ≤0.2 s.

Key Technical Specs (Typical Configuration)

Parameter	Typical Range	Notes
Rated Load	50–500 t	Custom up to 800 t
Rope Speed	1.5–10 m/s	VFD gives 0.5–12 m/s stepless
Drum Capacity	200–2000 m of rope	Customized by shaft depth
Motor Power	160–1250 kW	Matches load and speed
Power Supply	380V / 660V / 1140V / 3300V	Underground: 660V / 1140V flameproof
Working Slope	0–45° (inclined) / 90° (vertical)	Add anti-slip for steep slopes

Safety & Mining Compliance

Explosion‑proof design:

Underground models meet GB 3836.1‑2010 – Exd I Mb flameproof certified.

All electrical parts are flameproof – prevents sparks that could ignite gas.

Safety protections:

Emergency brake: Automatically engages on power loss – deceleration ≤5 m/s².

Overload protection: Stops and alarms when load exceeds rated by 15%.

Multiple limits: Overwind / overrun protection, slack rope protection, extreme position limits.

Applicable standards:

GB/T 20961‑2007 Single‑rope winding mine hoists

MT/T 771‑2011 Technical conditions for mine hoisting winches

EU CE, US MSHA (optional)

Materials, Durability & IP Rating

Main structure: Q355B / Q460 high‑strength steel, welded and stress‑relieved by annealing.

Wear parts:

Drum surface hard‑faced with wear‑resistant alloy – hardness ≥HRC55 – 2x longer life.
Wire rope galvanized + plastic‑coated – breaking force ≥1.6× rated load.
Gear surfaces carburized and hardened – hardness ≥HRC60 – excellent wear resistance.
Environmental protection: IP55, works from -25°C to +45°C, 95% humidity.