JXSC Machinery

2JK Double-Drum Mining Hoist

2JK Double-Drum Mining Hoist

  • Drum diameter: 2-4m
  • Maximum wire rope diameter: 25-50 mm
  • Maximum hoisting speed: 7-14 m/s
  • Application: The 2JK double-drum mining hoist is a crucial “choke point” device connecting the underground working face of a mine with the surface production system. It is mainly used for the vertical transportation of personnel, minerals, and equipment during mining operations, such as ore and gangue in metal mines, non-metal mines, and coal mines.
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Introduction Of 2JK Double-Drum Mining Hoist

The 2JK double-drum mining hoist, also known as the 2JK two-roller mine lifting machine, double-cylinder mine winder, is a key large-scale piece of hoisting equipment connecting underground and surface transportation in mines. It is primarily used in vertical or inclined shafts of coal, metal, and non-metal mines, handling the vertical or inclined transport of personnel, materials, and production equipment. The 2JK model features a double-drum independent configuration, capable of simultaneously pulling two lifting containers; during operation, one container ascends while the other descends. Suitable for balanced lifting or multi-point transportation needs, it significantly improves transportation cycle efficiency and is currently the mainstream choice for hoisting systems in small and medium-sized mines. This 2JK mining hoist is designed and manufactured in strict accordance with national and industry standards, has passed the national mining product safety certification, and can be widely used in various non-explosive gas mining scenarios with stable operation. Furthermore, the 2JK double-drum hoist can be integrated with mineral processing equipment (such as ball mills and flotation machines) to form a complete ore conveying system, optimizing the mining production process.

Compared to the JK single-drum hoist, the 2JK model offers higher efficiency, stronger multi-level adaptability, and lower long-term operating costs. For coal mines with high gas and coal dust explosion risks, a customized 2JKB explosion-proof version is also available to meet safety requirements under special operating conditions. The model can be flexibly selected based on the mine’s actual production capacity needs, the number of mining levels, and well depth parameters.

Application Scenarios

  • Metal mine shaft hoisting: Suitable for vertical transportation scenarios in iron, copper, and gold mines at depths of 300-1000 meters.
  • Coal mine safety hoisting: The dual-drum design allows independent control of two cages, enabling simultaneous transport of personnel and materials.
  • Deep shaft construction support: Used for heavy equipment hoisting in underground water conservancy projects and tunnel construction.
  • Mineral sorting process: The mining hoist works in conjunction with flotation machines or ball mills to achieve continuous ore and rock transport.

principle & structure Of 2JK Double-Drum Mining Hoist

2JK Double-Drum Mining Hoist

Working Principle

The 2JK double-drum mining hoist uses a variable frequency motor to drive a reducer, which in turn drives two independent drums to wind wire ropes for lifting and lowering. During operation, the main control system monitors the load and speed in real time. When one drum lowers the cage, the other drum simultaneously lifts the corresponding counterweight. The braking system employs a dual protection system of hydraulic disc brakes and safety brakes, which can be immediately locked in the event of a sudden power failure.

Structural Features

  1. Drum Assembly: High-precision forged drum with grooves engraved on the surface to secure the wire rope; diameters from 2 to 4 meters are available.
  2. Transmission System: Includes main motor, reducer, coupling, and hydraulic torque limiting device.
  3. Braking Unit: Dual protection with hydraulic and mechanical braking, providing both working and safety braking functions.
  4. Motor and Control Cabinet: Variable frequency motor for stepless speed regulation; PLC-controlled automated operation.
  5. Safety Monitoring: Overwind protection, slack rope detection, speed monitoring, and anti-reverse device.
  6. Bearing Frame: High-strength steel welded base, shock-resistant and deformation-resistant, adaptable to complex geological conditions in mines.

why choose JXSC 2JK Double-Drum Mining Hoist

features & Advantages

  • High-efficiency dual-drum design: Enables simultaneous reverse movement of two containers, synchronizing hoisting and lowering operations, increasing efficiency by over 40%. Fully adaptable to the high-intensity production demands of medium to large-scale mines.

  • Strong operational stability: The main shaft utilizes a forged structure, and the drum is designed based on elasticity theory, welded from high-strength steel plates, offering excellent fatigue resistance.

  • Low cost: Key components can be disassembled for transport and easy underground assembly. Modular construction facilitates individual replacement and simplifies maintenance.

  • Intelligent maintenance system: Real-time monitoring of the status of key components such as bearings and gears, enabling predictive maintenance to reduce failure rates.

  • Ultra-high safety: Complies with GB/T20961 mine hoist standards, with a dual braking system ensuring emergency stops. Equipped with multiple safety protections against overwinding, overspeed, and overload, ensuring an exceptionally long service life.

  • High adaptability: Drum width can be customized to user needs, and the number of wire rope winding layers can be adjusted according to the type of material being transported, adapting to the needs of mines at different depths.

  • Flexible and Convenient: The mining hoist is equipped with a hydraulic rope-adjusting clutch, and the wire rope length can be quickly adjusted to adapt to the operational needs of different mining depths.

  • Wide Range of Applications: Dustproof and moisture-proof design, suitable for various mining scenarios such as multi-level, vertical shaft, and inclined shaft operations. Particularly suitable for small and medium-sized mines with multiple intermediate sections.

    Global Certification: The 2JK double-drum hoist has passed CE and MA certifications, meeting the safety and performance requirements of the international market.

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models & specifications

Model Drum Max. Static  Tension(kN) Max. Static    Tension Diff.(kN) Maximum     Wire Rope    Diameter(mm) Hoisting Height / Transport Length Maximum Hoisting Speed(m/s)
No. Diameter(m) Width(m) Double Drum  Distance(mm) 1st layer(m) 2nd layer(m) 3rd layer(m)
2JK-2×1.0P 2 2.0 1.00 1090 60 40 25 163 369 605 7.0
2JK-2×1.25P 1.25 1340 222 487 784
2JK-2×1.5P 1.50 1590 245 554 908
2JK-2.5×1.2P 2.5 1.20 1290 90 55 31 205 453 738 9.0
2JK-2.5×1.5P 1.50 1590 276 595 953
2JK-2.5×1.8P 1.80 1890 332 715 1145
2JK-3×1.5P 3.0 1.50 1590 130 80 37 270 584 942 12.0
2JK-3×1.8P 1.80 1890 341 727 1159
2JK-3×2.0P 2.00 2090 378 807 1286
2JK-3×2.2P 2.20 2290 416 888 1415
2JK-3.5×1.7P 3.5 1.70 1790 170 115 43 312 667 1074
2JK-3.5×2.1P 2.10 2190 407 858 1364
2JK-3.5×2.4P 2.40 2490 464 978 1555 14.0
2JK-3.5×2.6P 2.60 2690 502 1056 1680
2JK-4×1.7P 4.0 1.70 1790 245 165 50 318 670 1072
2JK-4×2.1P 2.10 2190 392 828 1324
2JK-4.5×2.2P 2.20 2290 280 185 56 410 864 1385
2JK-5×2.3P 5.0 2.30 2390 350 230 62 429 900 1446
2JK-5.5×2.4P 5.5 2.40 2490 425 280 68 447 936 1506
2JK-6×2.5P 6.0 2.50 2590 500 320 75 457 957 1543

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