A mine electric hoist is a heavy-duty device driven by an electric motor, which uses a reducer to drive the drum to wind or unwind the steel wire rope, thereby enabling the lifting and lowering of containers such as cages and skips in the shaft. It is responsible for core tasks including ore hoisting, material lowering, and the transportation of personnel and equipment.
| Core Functions: |
| Primary Production Channel:Lifts extracted ores and coal from underground to the surface. |
| Personnel Transportation Hub:Transports miners to and from the shaft (using cages). |
| Material Supply Artery:Lowers equipment, support materials, tools, and other supplies. |
| Critical Safety Component:Serves as a key link in mine safety; its reliability directly impacts lives and property security. |
| Core components |
Mechanical components: Main Shaft Assembly: Includes the drum (or friction pulley), main shaft, bearings, etc. Braking System: Comprises service brakes (disc brakes) and safety brakes. Reducer: Reduces the high‑speed rotation of the motor to the low‑speed, high‑torque output required by the drum. Coupling: Connects the motor, reducer, and main shaft. Head Sheave/Guide Wheel: Installed at the top of the derrick to guide the wire rope. Wire Rope: Requires regular inspection and replacement. Hoisting Container: Cage or skip. |
Electrical components: Main motor:Provides power. Divided into DC motors and AC synchronous/asynchronous motors. Electrical control system:The "brain" of modern systems. Variable frequency speed control device:Enables smooth starting, speed regulation, and stopping, and is the core of modern electrical control. Programmable logic controller:Controls the entire hoisting process (starting, acceleration, constant speed, deceleration, stopping, protection, etc.). Monitoring and protection system:Monitors speed, position, overwind, overspeed, slack rope, brake shoe wear, motor status, etc., and triggers immediate Human-machine interface:Operator console and display screen, which show various parameters and statuses. |
Auxiliary and safety devices: Depth indicator:Displays the position of the container in the shaft in real time. Overwinding protection switch:The final mechanical and electrical protection to prevent the container from overrunning the top or bottom. Hydraulic station:Provides adjustable hydraulic pressure for the disc brakes. Lubrication system. |
Selection Considerations
Selecting the appropriate hoist for a mine is a complex systems engineering task, requiring consideration of the following factors:
Annual Mine Output:Determines hoisting capacity and the method (skip/cage).
Shaft Depth and Dimensions:Directly influence wire rope selection, hoist specifications, and power requirements.
Hoisting Method:Single-level or multi-level hoisting.
Geological and Working Conditions:Such as seismic risk, ambient temperature, humidity, etc.
Automation Level Requirements:Balancing initial investment with long-term operational costs.
Regulations and Standards:Must strictly comply with regulations set by the National Mine Safety Administration and other relevant standards.
Wanfeng Hoists & Winches – Dual Assurance for Efficiency and Safety in Mining
We employ over a hundred professional engineers with expertise in designing and executing multinational projects, ensuring full compliance and cost-effective operations. Through precise equipment selection and customized solutions, we provide mining operations with energy-efficient, power-saving hoisting systems tailored to your production needs—effectively avoiding issues like excessive power consumption and delays caused by improper equipment selection.
We offer one-stop technical solutions for shaft sinking and hoisting equipment, along with intelligent mine planning—all available with complimentary preliminary design services!
Contact Information
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•Website: www.mininghoist.com
•Catalog: https://www.mininghoist.com/upload/202510/11/202510110914407320.pdf
•Contact Us: https://www.mininghoist.com/contact.html
