JKB/2JKB Explosion-Proof Mine Hoist
- Type: JKB Single-drum explosion-proof mine hoist; 2JKB Double-drum explosion-proof mine hoist
- Drum Diameter: 2-3.5m
- Drum Width: 1.5-2.1m
- Application: JKB/2JKB explosion-proof mine hoist is suitable for flammable and explosive environments, such as coal mines and metal mines. It is widely used for material and personnel lifting and conveying in high-risk areas such as underground coal mines, metal mining, tunnel engineering, and emergency rescue.
Introduction Of JKB/2JKB Explosion-Proof Mine Hoist
The JKB/2JKB explosion-proof mine hoist, also known as the JKB/2JKB explosion-resistant mining elevator, is a single-rope winding hoist. It is a core transportation equipment specifically designed for mining environments with risks of flammable and explosive materials such as gas and coal dust.
- The JKB mine hoist has a single-cylinder structure, suitable for single-task hoisting scenarios, and is relatively inexpensive.
- The 2JKB mine hoist has a double-cylinder structure, allowing for simultaneous independent operation of two hoisting containers. It offers more flexible rope adjustment and is suitable for multi-level mining or mines requiring multiple transportation tasks simultaneously.
Both hoists meet the Ex d I Mb explosion-proof standard, strictly complying with mining industry regulations, and have passed national-level mining product safety certification. JKB/2JKB mine hoisting equipment is mainly responsible for personnel lifting, material transportation, and equipment dispatching in the main shaft, auxiliary shaft, inclined shaft, and vertical shaft of mines. The maximum hoisting speed can reach 12, and the applicable temperature range is -20℃ to +40℃. It can operate stably in the high humidity and high dust underground environment and is a key infrastructure in the modern mine safety production system. Compared to the conventional JK series mining hoists, the JKB/2JKB hoists are more efficient, have a higher safety rating, are explosion-proof, and operate more stably.
Application Scenarios
- Coal Mine Underground Transportation: Undertakes core transportation tasks in high-gas mines, including coal hoisting, personnel mobilization and demobilization, and production material lowering, meeting the continuous operation requirements under complex geological conditions.
- Deep Shaft Mining: For deep shaft mining scenarios in non-ferrous and non-metallic mines, achieves efficient hoisting of ore and waste rock, adapting to the transportation requirements of great depth and heavy loads.
- Hazardous Material Transportation: The JKB/2JKB explosion-proof mine hoist is used for the enclosed transfer of flammable, explosive, toxic, and hazardous ores underground.
- Mine Emergency Rescue Support: Enables rapid transfer of rescue personnel and disaster relief supplies, supporting long-term continuous operation in accident scenarios.
- Underground Expansion and Reconstruction Projects: Undertakes equipment hoisting and slag removal tasks during shaft construction, adapting to the flexible scheduling needs of temporary operations.
- Small Shaft Hoisting: Meets the daily production transportation and personnel commuting needs of small and medium-sized mine shafts.
principle & structure Of JKB/2JKB Explosion-Proof Mine Hoist
Working Principle
The JKB/2JKB explosion-proof mine hoist uses an explosion-proof electric motor as its power source. The power is transmitted to the reducer via a flexible coupling, and after reduction and torque amplification, it drives the main shaft to rotate the drum. The forward and reverse rotation of the drum realizes the winding and unwinding of the wire rope, thereby pulling the hoisting container (mining bucket or cage) to complete the lifting and lowering action inside the shaft.
Structural Features
- Explosion-proof motor: Flameproof housing, moisture-proof and corrosion-resistant, meeting underground safety standards.
- Drum assembly: JKB is a single drum, 2JKB is a double drum structure, made of high-strength alloy steel, wear-resistant.
- Braking system: Hydraulic + mechanical + emergency triple braking ensures instantaneous locking. Braking torque can be dynamically adjusted according to load.
- Depth indicator: Employs a dual-redundant design of encoder + mechanical depth indicator, displaying the hoisting container position in real time.
- Electrical control cabinet: Explosion-proof PLC control, supporting remote monitoring.
- Safety protection devices: Fall protection, overwind protection, overspeed protection, slack rope protection, and other safety mechanisms.
why choose JXSC JKB/2JKB Explosion-Proof Mine Hoist
features & Advantages
- Explosion-proof Compliance: The entire machine boasts an explosion-proof rating of Ex d I Mb, and all electrical components have passed national safety certifications, fully complying with coal mine safety regulations.
- Wide Applications: Supports stepless adjustment of lifting speed from 1 to 12, accommodating both heavy-load low-speed lifting and light-load high-speed transportation needs.
- Comprehensive Safety Protection: Features top-level fall protection + gas-linked shutdown mechanism, emergency braking response facilities, and multiple safety protection functions including undervoltage, overspeed, overload, and overwind protection, resulting in an extremely low failure rate.
- Convenient and Efficient Maintenance: Modular structural design allows for quick disassembly and replacement of key components. Built-in component lifespan warning function identifies potential failure risks in advance.
- Excellent Load Capacity: Drum diameter covers 2.0m-3.5m, maximum static tension reaches 115, and maximum lifting height exceeds 1600m, meeting the transportation needs of mines of different sizes.
- Strong Environmental Adaptability: High protection level allows for normal operation in underground environments with temperatures ranging from -20℃ to +40℃, high humidity, and high dust.
- High level of intelligence: Supports remote monitoring and centralized control, and can be connected to the mine’s intelligent management platform to achieve unattended, fully automated operation.
- Customizable: All electrical components of the JKB/2JKB are explosion-proof, meeting the safety standards for high-gas mines. Specific models can be selected based on the underground roadway layout and operational requirements.
models & specifications
| No. | Product Model | Number of Drums | Drum Diameter(m) | Drum Width(m) | Drum Center Distance() | Maximum Static Tension(kN) | Maximum Static Tension Difference(kN) | Maximum Wire Rope Diameter(mm) | Lifting Height/Transport Length (1st Layer) | Lifting Height/Transport Length (2nd Layer) | Lifting Height/Transport Length (3rd Layer) | Maximum Lifting Speed(m/s) |
| 1 | JKB-2X1.5P | 1 | 2.0 | 1.50 | / | 60 | / | 25 | 280 m | 605 m | 962 m | 7.0 |
| 2 | JKB-2X1.8P | 2.0 | 1.80 | / | 60 | / | 25 | 350 m | 746 m | 1176 m | 7.0 | |
| 3 | JKB-2X2P | 2.0 | 2.00 | / | 60 | / | 25 | 390 m | 826 m | 1305 m | 7.0 | |
| 4 | JKB-2.5X2P | 2.5 | 2.00 | / | 90 | 31 | 39 | 393 m | 832 m | 1312 m | 9.0 | |
| 5 | JKB-2.5X2.3P | 2.5 | 2.30 | / | 90 | 31 | 39 | 463 m | 974 m | 1528 m | 9.0 | |
| 6 | JKB-3X2.2P | 3.0 | 2.20 | / | 130 | 37 | 43 | 435 m | 917 m | 1447 m | 12.0 | |
| 7 | JKB-3X2.5P | 3.0 | 2.50 | / | 130 | 37 | 43 | 506 m | 1060 m | 1664 m | 12.0 | |
| 8 | JKB-3.5X2.8P | 3.5 | 2.80 | / | 170 | 43 | 50 | 501 m | 1049 m | 1654 m | 12.0 | |
| 9 | 2JKB-2X1P | 2 | 2.0 | 1.00 | 1090 | 60 | 40 | 25 | 163 m | 369 m | 605 m | 7.0 |
| 10 | 2JKB-2X1.25P | 2.0 | 1.25 | 1340 | 60 | 40 | 25 | 222 m | 487 m | 784 m | 7.0 | |
| 11 | 2JKB-2.5 X1.2P | 2.5 | 1.20 | 1290 | 90 | 55 | 31 | 245 m | 554 m | 908 m | 9.0 | |
| 12 | 2JKB-2.5 X1.5P | 2.5 | 1.50 | 1590 | 90 | 55 | 31 | 205 m | 453 m | 738 m | 9.0 | |
| 13 | 2JKB-3 X1.5P | 3.0 | 1.50 | 1590 | 130 | 80 | 37 | 276 m | 595 m | 953 m | 12.0 | |
| 14 | 2JKB-3 X1.8P | 3.0 | 1.80 | 1890 | 130 | 80 | 37 | 332 m | 715 m | 1145 m | 12.0 | |
| 15 | 2JKB-3.5 X1.7P | 3.5 | 1.70 | 1790 | 170 | 115 | 43 | 270 m | 584 m | 942 m | 12.0 | |
| 16 | 2JKB-3.5 X2.1P | 3.5 | 2.10 | 2190 | 170 | 115 | 43 | 341 m | 727 m | 1159 m | 12.0 |
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