Door Lifting
Power Winch
Safety and control are paramount when lifting heavy Coke Oven doors. This Power Winch features a high-ratio Worm Reducer Gearbox that acts as a natural brake system, ensuring loads hold steady even during power failures. Powered by a robust 5-7.5 HP motor, it offers a lifting capacity of up to 5 tons.
Precision Lifting for Critical Operations
The Manual Tools Company **Door Lifting Power Winch** is designed specifically for the vertical lifting of heavy industrial doors, particularly in Coke Oven Batteries. Unlike standard construction winches, this unit prioritizes stability and load holding over speed.
The core advantage lies in its **Worm Reducer Gearbox**. This design provides a high reduction ratio in a compact space and offers an inherent safety feature: the gear cannot be back-driven by the load. This prevents the door from accidentally dropping if the motor brake fails or power is cut.
Technical Parameters
| Parameter | Specification Value |
|---|---|
| Lifting Capacity | 2.5 Tons – 5 Tons |
| Motor Power | 5 HP – 7.5 HP (3-Phase) |
| Gearbox Type | Worm Reducer (Self-Locking) |
| Gear Material | Cast Steel / Phosphor Bronze |
| Drum Type | Grooved Steel Drum for Wire Rope |
| Base Frame | Heavy Fabricated Steel Channel |
Safe Lifting Cycle
Drive Activation
The 5-7.5 HP electric motor is engaged. Power is transmitted through a coupling to the input shaft of the Worm Gearbox.
Torque Multiplication
The worm shaft drives the worm wheel. This reduces speed significantly while multiplying lifting torque, ensuring a smooth, non-jerky lift.
Vertical Lift
The output shaft rotates the grooved drum, winding the steel wire rope. The load (Coke Oven Door) is lifted vertically to the desired height.
Coke Oven Doors
The primary application. Used on the bench for lifting and positioning heavy oven doors during charging.
Heavy Dampers
Used in power plants and steel mills to vertically lift heavy isolation dampers in flue gas ducts.
Maintenance Bays
General purpose vertical lifting for equipment maintenance where overhead cranes are not available.
Lubrication & Care
- Gearbox: Maintain oil level (SAE-90/140). Worm gears generate heat, so oil quality is vital.
- Wire Rope: Apply heavy lubricant/grease to prevent corrosion from coke oven fumes.
- Drum Bushings: Grease nipples on the drum shaft monthly.
Mechanical Inspection
- Inspect foundation bolts. Vibration can loosen them over time.
- Verify the limit switch functionality to prevent over-winding.
