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JKM-2.25*4(I) multi-rope mine hoist

Model: JKM-2.25*4(I)

The JKM-2.25*4(I) multi-rope mine hoist is a compact, floor-mounted friction hoist designed for medium-depth shafts. Utilizing 4-rope technology, it offers enhanced safety and load distribution compared to single-rope systems. It is ideal for mines with limited space that still require high lifting efficiency.

Lifting Capacity: 23 Tons (Vertical) / 23–46 Tons (Inclined)
Reel Dimensions: 2.25m Diameter
Wire Rope: 24mm Diameter
Lifting Speed: 10m/s
Number of wire ropes: 4

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Product Overview

The JKM & JKMD Series Multi-Rope Friction Mine Hoist represents the cutting edge of deep-shaft hoisting technology. Unlike single-rope winding hoists, the multi-rope friction system utilizes the friction between the steel wire ropes and the driving pulley to lift loads. This design is the industry standard for deep vertical shafts, offering unmatched safety, efficiency, and load-carrying capacity.

Key Technical Features

High-Strength Drum System

The drum is made of Q345 high-strength low-alloy steel plate. It is rolled by a plate rolling machine, then precision machined by a vertical lathe (to prevent drum eccentricity), tempered, and subjected to vibration aging treatment before assembly. After the drum is welded and formed, the welds are inspected by flaw detection, and it can be put into use only after passing the inspection.

Advanced Braking System

The new disc brake device and the hydraulic station form the braking system of the mine hoist. The pipeline adopts a ferrule-type joint for connection. The oil cylinder, piston and seals are optimally designed with reference to foreign products (ABB). The piston adopts low-temperature carbonitriding (QPQ) technology to enhance wear resistance and ensure zero leakage.

Precision Control

The PLC control system for the variable frequency electric control device of mine hoists is a core control unit built on Programmable Logic Controllers (PLCs). It achieves precise logical control over the variable frequency speed regulation process of the hoist through industrial-grade programming. This system integrates closed-loop speed control, precise position detection, multi-speed operation modes, and fault self-diagnosis functions.

depth indication

The depth indicator in a mine hoist is a key device ensuring the accuracy and safety of hoisting operations. It can display the real-time position and operating speed of the hoisting container in the shaft, transmit depth signals to operators through mechanical or electronic means, and is equipped with an overwinding protection function.

Technical Specifications

Model Friction wheel diameter (m) Number of wire ropes Maximum static tension diference of wire rope (KN) Maximum static tension of wire rope (KN) Maximum wire rope diameter (mm) Maximum lifting speed (m/s) Reducer
model Speed Ratio
JKM-2.25*4(I) 2.25 4 80 230 24 10 Xp800 73.5

Application Scenarios

Vertical Shafts

Inclined Roadways

Surface

Underground

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  • 🛠 Selection Guide & FAQ

The difference primarily lies in the installation structure and drive configuration:
JKM Series (Tower-Mounted): The “M” stands for Multi-rope. This model is typically installed at the top of a hoisting tower (Gantry). The hoist sits directly above the shaft, which saves ground space and eliminates the need for large headsheaves.
JKMD Series (Floor-Mounted): The “D” often refers to its configuration for floor-level installation. The hoist is located in a hoist house on the ground, and the ropes are guided into the shaft via headsheaves on a headframe.

You must calculate the total weight of:
The maximum load (ore, materials, or equipment).
The weight of the skip/cage.
The weight of the wire rope itself (based on the maximum depth). Refer to our technical table

Yes. However, safety regulations (AQ1033-2007) are stricter for personnel. When lifting people:
The drum-to-rope diameter ratio must meet specific safety standards.
We recommend models with a drum diameter of 1.2m or larger for personnel transport.

VFD (Variable Frequency Drive): Strongly recommended. It offers smoother starting/stopping, precise positioning, and reduces mechanical wear.

1. Application Environment: Is it for a surface mine or underground? Does it require explosion-proof certification?
2. Lifting Purpose: Will it be used for lifting materials only, or for transporting personnel as well?
3. Shaft Type: Is it a Vertical Shaft or an Inclined Roadway?(If inclined: Please specify the inclination angle (e.g., 25°).)
4. Lifting Depth/Length: The total travel distance (meters) of the container or skip.
5. Maximum Payload: The weight of the materials/equipment per trip (kg/ton).
6. Speed Requirements: Your desired lifting speed (m/s).
7. Power Supply: Your local voltage and frequency (e.g., 380V/50Hz, 440V/60Hz, etc.).

If you provide us with your shaft depth (m), inclination angle (°), and payload (kg), our engineers can provide a technical proposal and a 3D layout.

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