A mine gear, more accurately referred to as mine headgear or a headframe, is a structure erected above a mine shaft to support the mechanisms used for raising and lowering materials and personnel.
Purpose and Function of Mine Headgear
Mine headgear serves several crucial functions in underground mining operations:
- Supporting Winding Mechanisms: The primary function is to support the winding gear (also known as a hoist), which includes wheels (sheaves) and cables used to raise and lower the cage or skip inside the mine shaft.
- Transporting Workers and Ore: These structures are essential for safely and efficiently transporting workers to and from the mine and bringing ore or other extracted materials to the surface.
- Shaft Access: They provide a secure and organized point of access to the mine shaft.
Components of Mine Headgear
While designs vary, common components include:
- Structural Frame: A robust frame, often made of steel or reinforced concrete, providing overall support.
- Sheave Wheels: Large wheels mounted at the top of the frame, guiding the winding cables.
- Winding Cable: Heavy-duty cables connecting the cage/skip to the winding engine.
- Cage or Skip: The conveyance used to transport personnel, ore, or equipment within the shaft.
- Headframe Platform: A working platform at the top of the headframe for maintenance and inspection.
Iconic Symbol of Mining
Mine headgear has become an iconic symbol representing the mining industry, often appearing in logos, landmarks, and depictions of mining operations. Their distinctive appearance makes them easily recognizable reminders of the underground world and the efforts involved in extracting valuable resources.
