JK/2JK(B) Mine Hoist
The JK series mine hoist is an intelligent hoisting equipment developed specifically for heavy-duty mining conditions. It can be adapted to various mining scenarios such as coal mines, metal mines, and non-metal mines, and meets all-around hoisting needs from ground and underground -30° inclined roadways to 800-meter deep vertical shafts.
Capacity: 6-17 Tons
Maximum Lifting Speed: 14 m/s
Application: Mining operations (coal, metals, minerals), personnel & machinery transport, deep and inclined shaft logistics
JK/2JK(B) Mine Hoist Overview
The JK(B)/2JK(B) single-rope mine hoist is a highly adaptable lifting solution, engineered for diverse applications across coal, metal, and non-metal mining operations. Available in multiple configurations, it accommodates varying load requirements, ensuring seamless material and personnel transport. Its robust, high-capacity design is optimized for both vertical shafts and sloped tunnels, delivering dependable performance even in demanding underground conditions.
As the standard variant, the JK/2JK series is designed for general-purpose mining hoisting with a focus on efficiency and durability. It features a single-drum (JK) or double-drum (2JK) configuration, offering flexibility for shallow to medium-depth mines. It features a single-rope winding design with a maximum lifting capacity of 17 tons and a maximum lifting speed of up to 12.3 meters per second. It is suitable for mining operations with lower annual output and shaft depths of less than 400 meters. The system excels in vertical shaft applications, integrating advanced braking and control mechanisms to ensure safe, continuous operation. Its modular design simplifies maintenance, while corrosion-resistant materials extend service life in harsh environments.
The JKB/2JKB mine hoist is an explosion-proof product in the JK series, specifically designed for mines with explosive gas environments such as methane and coal dust. The JKB features a single-drum structure, while the 2JKB has a double-drum structure. Both are equipped with a hydraulic rope-adjusting clutch for easy rope length adjustment to accommodate different hoisting depths. This model has a maximum hoisting speed of 8 m/s, an operating temperature range of -20℃ to +40℃, and an IP65 protection rating. It employs a triple closed-loop control system of “speed-torque-position” to achieve a speed accuracy of ±0.5% and a stopping accuracy of ±20mm. Equipped with an 8-level fall protection system and an automatic fault diagnosis system, it significantly enhances its intrinsic safety level.
JK/2JK(B) Mine Hoist Structural Features
- JK Single-rope Mine Hoist: Single-drum design, drum diameter ≥ 2 meters, constructed with a high-strength steel plate welded structure, main shaft made of 45# steel forgings, integrally annealed to ensure load-bearing strength.
- 2JK Single-rope Mine Hoist: Double-drum design, equipped with a radial toothed hydraulic rope adjusting clutch, allowing rope length adjustment without stopping the machine, adapting to different depth operation requirements.
- JKB Single-rope Mine Hoist: Explosion-proof design, specifically designed for underground coal mine environments containing flammable and explosive gases such as methane and coal dust, explosion-proof marking is Ex d I Mb, certified by the national “Safety Mark”.
- 2JKB Single-rope Mine Hoist: Double-drum explosion-proof type, double drums + hydraulic rope adjusting clutch, supports online rope adjustment, strong continuity of hoisting operations, suitable for continuous hoisting in medium and deep wells.
Advantages
JK, 2JK, JKB, and 2JKB mine hoists each possess advantages in structural design, applicable environments, and level of intelligence, meeting the transportation needs of various mine conditions.
JK Type (Single-Drum, Non-Explosion-Proof) Core Advantages
- Simple Structure, Convenient Maintenance: With a single-drum design, the machine has a compact structure with fewer components, enabling efficient daily inspection and maintenance.
- Low Cost, Strong Applicability: Requires no explosion-proof configuration, resulting in lower investment costs. Suitable for surface hoisting in metal mines, non-metal mines, and shallow coal mines without gas risks.
- Flexible Drive: Supports three electrical control schemes: resistance speed regulation, PLC control, and frequency conversion speed regulation, allowing for flexible selection based on budget and automation requirements.
2JK Type (Double-Drum, Non-Explosion-Proof) Core Advantages
- Double Hoisting Efficiency: The double-drum design enables alternating lifting of two containers, significantly improving transportation capacity per unit time and making it suitable for main shaft hoisting in high-yield mines.
- Online rope adjustment for continuous operation: Equipped with a radial toothed hydraulic rope adjustment clutch, the wire rope length can be adjusted without stopping the machine, adapting to the needs of multi-level mining.
- Smooth and safe operation: Utilizes a hardened toothed planetary reducer and disc brake system, achieving high transmission efficiency and low noise, while a depth indicator enables precise position control.
JKB type (single-tube explosion-proof type) Core Advantages
- Intrinsically safe design: Certified by Ex d I Mb for explosion protection, specifically designed for environments with gas and coal dust explosion risks, such as underground coal mines, ensuring safe operation in high-risk scenarios.
- Intelligent and precise control: Employs a triple closed-loop control system of “speed-torque-position,” achieving ±0.5% speed accuracy and ±20mm stopping accuracy, improving operational reliability.
- Energy-efficient and high-performance: Equipped with a variable frequency speed control system, energy consumption is reduced by 25% compared to traditional equipment. Supports four-quadrant operation, with feedback energy directly fed into the grid, resulting in significant energy savings.
2JKB Type (Double-Cylinder Explosion-Proof) Core Advantages
- High Efficiency + Explosion-Proof Dual Protection: Integrating explosion-proof design on the high-efficiency 2JK structure, it meets the needs of continuous transportation in deep wells and is suitable for explosive gas environments.
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- Multiple Safety Protections: Built-in 8-level fall protection mechanism, emergency braking response time ≤0.3s, combined with a gas concentration linkage protection system, achieves proactive safety control.
- Intelligent Operation and Maintenance, Cost Reduction and Efficiency Improvement: Supports remote monitoring, fault early warning, and predictive maintenance. Modular design reduces average repair time by 40%, significantly lowering the total lifecycle operating cost.
Structures & Working Principle
JK Mine Hoist Structure
The JK/2JK(B) mine hoist is mainly composed of the main shaft device, reducer, rope adjusting mechanism, disc brake device, hydraulic station, depth indicator, speed measuring generator device, elastic coupling, gear coupling, motor, operating table, and electrical control system.
Single Rope Winding Hoist Main Shaft Device
The main shaft device is the working mechanism of the winch and also the main load-bearing part of the winch. It bears all the torque of the winch and serves as a winding hoisting wire rope to withstand various loads. It is mainly composed of the main shaft, bearing, bearing seat, reel, support wheel, liner, high-strength bolt assembly, and other components.
JK(B)/2JK(B) Working Principle
The motor transmits the power to the reel wound with the wire rope through the reducer to realize the lifting and lowering of the container. The speed is adjusted through electrical control. The disc brake is braked by hydraulic and electrical control. The machine, electricity, and hydraulic joint control system, composed of various transmission sensors and control components, realizes the monitoring and protection of the whole machine, and realizes the information transmission inside and outside the hoist through computer and network technology.
Technical Parameters
| JK Series Single-rope Winding Mine Hoists Parameters | |||||||||
| Model | Hoisting Drum | Max. Static Tension | Wire Rope Max. Diameter | Hoisting Height / Transport Length | Max. Lifting Speed | ||||
| Number of Units | Diameter | Width | 1st layer | 2nd layer | 3rd layer | ||||
| m | kN | mm | m | m/s | |||||
| JK-2×1.5P | 1 | 2 | 1.5 | 60 | 25 | 280 | 605 | 962 | 7 |
| JK-2×1.8P | 1.8 | 350 | 746 | 1176 | |||||
| JK-2×2.0P | 2 | 390 | 826 | 1305 | |||||
| JK-2.5×2P | 2.5 | 2 | 90 | 31 | 393 | 832 | 1312 | 9 | |
| JK-2.5×2.3P | 2.3 | 463 | 974 | 1528 | |||||
| JK-3.0×2.2P | 3 | 2.2 | 130 | 37 | 435 | 917 | 1447 | 12 | |
| JK-3.0×2.5P | 2.5 | 506 | 1060 | 1664 | |||||
| JK-3.5×2.5P | 3.5 | 2.5 | 170 | 43 | 501 | 1049 | 1654 | 12 | |
| JK-3.5×2.8P | 2.8 | 572 | 1193 | 1871 | |||||
| JK-4×2.2P | 4 | 2.2 | 245 | 50 | 415 | 875 | 1395 | 14 | |
| JK-4×2.5P | 2.25 | 470 | 990 | 1576 | |||||
| JK-4×2.7P | 2.7 | 532 | 1110 | 1752 | |||||
| JK-4×3P | 3 | 560 | 1188 | 1890 | |||||
| JK-4.5×3P | 4.5 | 3 | 280 | 56 | 597 | 1242 | 1958 | ||
| JK-5×3P | 5 | 3 | 350 | 62 | 593 | 1232 | 1948 | ||
| JK-5×3.5P | 3.5 | 710 | 1469 | 2307 | |||||
| 2JK Single-Rope Winding Mine Hoist Parameters | |||||||||||
| Model | Drum | Max. Static Tension | Max. Static Tension Diff. | Maximum Wire Rope Diameter | Hoisting Height / Transport Length | Maximum Hoisting Speed | |||||
| unit | Diameter | Width | Double Drum Distance | 1st layer | 2nd layer | 3rd layer | |||||
| m | mm | kN | kN | mm | m | m/s | |||||
| 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 | ||
| JKB/2JKB Explosion-proof Single-Rope Winding Hoist Parameters | |||||||||||
| Model | Drum | Maximum Static Tension of Wire Rope | Maximum Static Tension Difference | Lifting Height or Transport Length | Lifting Speed | ||||||
| unit | Diameter | Width | Center distance between two drums | manned | manned | Load | 1st layer | 2nd layer | 3rd layer | ||
| m | mm | kN | m | m/s | |||||||
| JKB-2×1.5P | 1 | 2.0 | 1.50 | – | 60 | / | 25 | 280 | 605 | 962 | 7.0 |
| JKB-2×1.8P | 1.80 | 350 | 746 | 1176 | |||||||
| JKB-2×2P | 2.00 | 390 | 826 | 1305 | |||||||
| JKB-2.5×2P | 2.5 | 2.30 | 90 | 31 | 393 | 832 | 1312 | 9.0 | |||
| JKB-2.5×2.3P | 2.30 | 463 | 974 | 1528 | |||||||
| JKB-3.0×2.2P | 3.0 | 2.20 | 130 | 37 | 435 | 917 | 1447 | 12.0 | |||
| JKB-3.0×2.5P | 2.50 | 506 | 1060 | 1664 | |||||||
| JKB-3.5×2.8P | 2.80 | 501 | 1049 | 1654 | |||||||
| 2JKB-2×1P | 2 | 2.0 | 1.00 | 1090 | 62 | 40 | 25 | 163 | 369 | 605 | 7.0 |
| 2JKB-2×1.25P | 1.25 | 1340 | 222 | 487 | 784 | ||||||
| 2JKB-2.5×1.2P | 2.5 | 1.20 | 1290 | 83 | 55 | 31 | 245 | 554 | 908 | 9.0 | |
| 2JKB-2.5×1.5P | 1.50 | 1590 | 205 | 453 | 738 | ||||||
| 2JKB-3.0×1.5P | 3.0 | 1.50 | 1590 | 130 | 80 | 37 | 276 | 595 | 953 | 12.0 | |
| 2JKB-3.0×1.8P | 1.80 | 1890 | 332 | 715 | 1145 | ||||||
| 2JKB-3.5×1.7P | 3.5 | 1.70 | 1790 | 170 | 115 | 43 | 270 | 584 | 942 | ||
| 2JKB-3.5×2.1P | 2.10 | 2190 | 341 | 727 | 1159 | ||||||
