Skywheel
- Material : Cast steel or alloy steel, wheel groove surface hardness HB300-350, corrosion-resistant treatment.
- Diameter range : Φ1.5m-Φ8m, customized according to lifting height and wire rope tension.
- Wire rope specifications : Diameter 16mm-60mm, wrap angle range 15°-180°.
-
Check Items :
It is recommended to check the wheel groove wear and bearing lubrication status once a quarter.
- INTRODUCTION
- SPECIFICATION
- RELATED
- INQUIRY
Mine Head Sheave Technical Specifications
1. Overview
The head sheave is a critical component in mine hoisting systems, installed atop the headframe to guide and support hoist ropes. Compliant with GB/T 25707-2010 and ISO 4306-1 standards, it ensures safe material/personnel transport in vertical shafts.
2. Structural Components
Main Assembly
Wheel: ZG270-500 cast steel or welded steel with PU/Nylon liners
Groove Design: 1.1-1.3× rope diameter for optimal wear resistance
Bearings: Double-row spherical roller bearings (22300 series)
3. Technical Features
| Parameter | Specification |
|---|---|
| Load Capacity | 50-3,000 kN |
| Diameter Range | 1.5-6m (80-100× rope diameter) |
| Service Life | 100,000+ cycles (liner replacement) |
4. Applications
Underground Mining: Coal/metallic ore shafts
Construction: Tower crane guidance systems
Cable Transport: Ropeway installations
5. Technical Parameters
| Diameter | Max Load | Rope Size | Weight |
|---|---|---|---|
| 1.5m | 50 kN | 16mm | 2t |
| 6m | 3,000 kN | 65mm | 30t |
6. Maintenance Protocol
Daily: Check groove wear (≥50% thickness)
Quarterly: Lubricate bearings (NLGI 2 grease)
Annual: 650-800 N·m bolt torque verification
7. Component Comparison
| Feature | Head Sheave | Guide Pulley |
|---|---|---|
| Load Capacity | 3000 kN | 100 kN |
| Installation | Shaft top | Shaft bottom |
8. Compliance Standards
GB/T 25707-2010 (Mine Sheaves)
ISO 4306-1 (Lifting Terminology)
9. Summary
Critical for deep shaft operations (-40℃ to +50℃), head sheaves require FEA-optimized designs and regular UT/MT inspections. Multi-groove versions recommended for friction hoist systems.
| Model | Sheave Diameter (m) | Wire Rope Diameter (mm) | Bearing Span (mm) | Max Travel Distance (mm) |
|---|---|---|---|---|
| TZG-800/16 | 0.8 | 16 | 500 | - |
| TZG-1000/20 | 1.0 | 20 | 550 | - |
| TZD-1000/800 | 1.0 | 20 | 1250 | 800 |
| JKMD 3.5×4(III) | 3.5 | 36 | 950 | 300 |
Key Technical Specifications:
Construction Types:
Cast steel structure (≤3m diameter)
Welded structure (≥3.5m diameter)
Stamped steel rim structure
Bearing System: SKF spherical roller bearings (30,000+ hours service life)[6,9](@ref)
Groove Liners: Nylon/urethane composite material[6,8](@ref)
Safety Features:
Temperature monitoring (PT100 sensors)[6](@ref)
Dual lubrication channels
Anti-corrosion coating
Standards Compliance:
MT/T 327-2011 (Coal Industry Standard)[1,3](@ref)
GB/T 11352-1989 (Cast Steel Components)
ISO 4301 (Cranes Design Standards)
* Technical data verified under 25℃ ambient temperature
** TZG-series for fixed applications, TZD-series for traveling sheaves
† 3-year industrial warranty included
