JKZ/2JKZ Mine Hoist
The JKZ/2JKZ series shaft-sinking mine hoist is a specialized temporary hoisting equipment developed exclusively for mine shaft construction periods. It can be adapted to shaft excavation scenarios such as coal mines, metal mines, and non-metal mines, and meets the multi-functional hoisting needs of lifting gangue, lowering concrete, suspending sinking platforms, and transporting construction equipment during shaft sinking.
Motor Speed: < 750 r/m
Maximum Lifting Height: 3100 m
Working Temperature: -40℃~40℃
Scope of Application: Widely applicable to the construction or renovation and expansion of vertical shaft projects in various types of mines, such as coal mines, metal mines, and non-metal mines.
JKZ/2JKZ Mine Hoist Overview
The JKZ/2JKZ Mine Shaft Sinking Hoist is a type of hoisting equipment used in vertical mine shaft construction (sinking). It is designed for lowering and raising personnel, materials, and equipment during the excavation of new mine shafts or the deepening of existing ones.
Types & Models
- JKZ– Single-drum mine shaft sinking hoist.
- 2JKZ– Double-drum sinking hoist for more complex operations.
JKZ/2JKZ Mine Sinking Hoist’s Main Purpose
- Lifting the rock in the pit
- Lifting personnel and all kinds of machinery and equipment for shaft sinking
- Transportation of Concrete for walls
- Lowering and lifting shaft sinking equipment (e.g., kibbles, temporary platforms).
Characteristics of the JKZ/2JKZ Mine Shaft Hoist Winch
- Large difference in static tension
- Large Lifting load
- High lifting speed during shaft sinking
- Complex velocity diagram (at least nine stages speed chart)
- Higher control precision and Better speed performance
Application Scope
Exclusively used for the construction phase of new or expanded vertical shafts. This is temporary construction equipment that must be replaced with a permanent production hoist once the mine is completed and put into operation, to ensure the essential safety of the mine’s production operation stage.
JKZ Mine Shaft Sinking Hoist vs JK/2JK(B) Mine Hoist
The core differences between the JKZ shaft sinking hoist and the JK series production hoist lie in their application stage, design conditions, and equipment positioning.
| Comparison Dimensions | JKZ Series Shaft Sinking Hoist | JK Series Mine Hoist |
Application Stage | Mine construction phase (shaft drilling) | Mine production and operation phase |
| Core Purpose | Lifting of waste rock, concrete, and construction equipment; suspending of suspended platforms, formwork, and umbrella drills, etc. | Daily lifting of personnel, coal, ore, materials and equipment |
Service Life | Temporary equipment; it needs to be dismantled and moved to the next construction site after the well is drilled. | Permanent fixed equipment, serving the entire life cycle of the mine. |
| Structural Features | Compact structure, lightweight, easy to assemble and disassemble, suitable for frequent handling | Stable structure, long-term fixed installation, no need for frequent relocation |
| Load Characteristics | Large load variations (alternating empty/full load), large static tension difference | Relatively stable load, standardized lifting tasks |
| Speed Control | Supports complex velocity maps (at least nine stages) and high dynamic response. | The speed mode is fixed, the speed adjustment is smooth, and the focus is on operating efficiency. |
| Drum Design | Single-drum (JKZ type) or double-drum (2JKZ type), mostly double-drum (2JKZ type), supporting multi-task parallel operation. | Single drum (JK type) or double drum (2JK type) for single container or balanced lifting. |
| Safety Standards | Designed for special working conditions during the mine construction phase, meeting the temporary construction requirements of the “Coal Mine Safety Regulations”. | Manufactured according to standards such as GB/T20961-2007, and certified with “Safety Mark”. |
| Mandatory Replacement | After well construction is completed, the hoist must be replaced with a production-type hoist. | Long-term use as formal production equipment |
Advantages
JKZ/2JKZ Mine Hoist Core Advantages as follows:
1. Strong Adaptability to Construction Conditions
Tailored to the complex working conditions of shaft construction, it features a large static tension difference to cope with extreme load changes between empty and fully loaded buckets.
2. Precise Dynamic Control Performance
The speed control system supports at least nine-stage complex speed diagrams, ensuring high-precision dynamic response to meet the diverse needs of lifting personnel, materials, and heavy construction equipment.
3. Portable and Reusable Structure
Designed for frequent relocation after shaft completion, the equipment adopts a compact and modular structure with high-rigidity detachable components. It can be quickly disassembled, transported, and reinstalled at new construction sites, effectively reducing the time and cost of equipment transfer between projects.
4. Integrated Safety Protection System
Equipped with a disc brake device, dedicated hydraulic station, and intelligent electrical control system, it integrates multiple protection functions such as overwinding, overspeed, and overload. The closed-loop safety control system realizes real-time monitoring of the lifting process and can automatically trigger emergency braking in abnormal situations, ensuring the safety of personnel and equipment during the high-risk shaft construction period.
5. Efficient Parallel Operation Capability
2JKZ double-drum model supports independent operation of two drums, enabling simultaneous execution of different tasks such as gangue lifting and concrete lowering. This parallel operation mode significantly improves the efficiency of shaft construction and shortens the overall construction period.
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6. Dedicated Equipment Ensures Intrinsic Safety
As temporary equipment used during the mine construction phase, it is designed to strictly meet the specific requirements of the construction environment. Once the mine is completed, it must be replaced with a permanent production hoist to avoid the significant safety hazards associated with mixed use.
Structures & Working Principle
JKZ/2JKZ Mine Shaft Sinking Winch Structures
The hoist comprises four core systems:
- Main Shaft Assembly: Dual drums (2JKZ) or single cylinder (JKZ) for rope winding.
- Rope Adjustment Mechanism: Ensures precise alignment and tension control.
- Hydraulic Station: Powers braking and auxiliary functions.
- Electrical Control System: Centralized PLC-based controls with fail-safe protections (e.g., overspeed sensors, emergency brakes).
Additional components include heavy-duty reducers, couplings, and reinforced base frames to withstand dynamic loads.
JKZ/2JKZ Mine Shaft Sinking Winch Working Principle
- Power Transmission: The motor drives the main shaft via couplings and reducers, converting rotational force to drum movement.
- Direction Control: Motor rotation reversal switches between lifting/lowering modes by winding/unwinding wire ropes.
- Load Handling: Ropes connected to buckets or platforms move vertically, transporting materials/personnel between shaft top and bottom.
- Safety Monitoring: Sensors detect anomalies (e.g., overspeed, overwinding), triggering automatic brakes or shutdowns.
- Mobility Cycle: Post-sinking, modular components are disassembled for transport to new sites, ensuring rapid redeployment.
Technical Parameters
| JKZ/2JKZ Technical Specifications of Shaft Hoist Winch | ||||||||
| Product Model | Drum | Maximum Static Tension | Maximum Wire Rope Diameter | Hoisting Height /Transport Length | Wire Rope Capacity | Motor Speed (Not Exceeding) | ||
| Quantity | Diameter | Width | ||||||
| piece(s) | m | kN | mm | m | m/s | r/min | ||
| JKZ-2.8×2.2P | 1 | 2.8 | 2.2 | 180 | / | 1259 | 5.68 | 750 |
| JKZ-3.2×2.6P | 3.2 | 2.6 | 200 | 1663 | ||||
| JKZ-3.2X3P | 3 | 1919 | 6.48 | |||||
| JKZ-3.6X3P | 3.6 | 220 | 2038 | 7.3 | ||||
| JKZ-4X3P | 4 | 285 | 1976 | 7.85 | 600 | |||
| JKZ-4X3.5P | 3.5 | 285 | 2332 | |||||
| JKZ-4.5X3.7P | 4.5 | 3.7 | 340 | 2490 | 7.94 | |||
| JKZ-5X4P | 5 | 4 | 410 | 2700 | 7.85 | |||
| JKZ-5.5X5P | 5.5 | 5 | 500 | 3100 | 8.64 | |||
| 2JKZ-3X1.8P | 2 | 3 | 1.8 | 180 | 155 | 1080 | 6.08 | |
| 2JKZ-3.6X1.85P | 3.6 | 1.85 | 220 | 180 | 1199 | 7.3 | ||
| 2JKZ-4X2.65P | 4 | 2.65 | 285 | 255 | 1726 | 8.11 | ||
| 2JKZ-5X3P | 5 | 3 | 410 | 290 | 1959 | 7.85 | ||
| 2JKZ-5.5X4P | 5.5 | 4 | 590 | 410 | 2500 | 8.64 | ||
