Drawworks brake troubleshooting involves inspecting and adjusting various components to ensure proper braking function. Key areas include the brake linkage, equalizer bar, brake bands, and cooling system. Regular inspections, proper adjustments, and maintenance are crucial for safe and reliable drawworks operation.
1. Inspection and Identification of Issues:
- Brake Linkage:Check for loose or damaged linkages, pins, and guards. Ensure proper spacing around the brake rollers and verify even spacing on the equalizer bar.
- Brake Bands and Equalizer Bar:Inspect the brake bands for wear and tear, and adjust the equalizer bar to ensure equal tension on both brake bands.
- Cooling System:Inspect the water supply system for leaks, ensure proper cooling water flow, and check for restrictions or deposits in the water path.
- Brake Pad and Disc Wear (for disc brakes):Check the wear rate of brake pads and discs against OEM recommendations.
- Water Brake System:Ensure the water brake system is functioning correctly and providing sufficient cooling.
2. Troubleshooting and Adjustments:
- Adjusting Brake Linkage:Adjust the nuts at the equalizer bar to control the brake handle height and ensure proper braking.
- Adjusting Equalizer Bar:Adjust the spacing on the equalizer bar with spacer nuts, ensuring equal spacing on each side of the equalizer bar between the bar and nuts.
- Cooling Water System:If overheating is an issue, address leaks, restrictions, and ensure proper water flow.
- Brake Disc and Pad Replacement:Replace worn-out brake pads and discs according to OEM recommendations.
- Water Brake Maintenance:Regularly inspect and maintain the water brake system, including cleaning the cooling water path and ensuring the water supply is adequate.
3. Safety Considerations:
- Lockout/Tagout:Implement lockout/tagout procedures before working on the drawworks to prevent accidental activation.
- Auxiliary Brake Function:Ensure the auxiliary braking system (e.g., water brake) is functional and functioning correctly, especially during tripping operations.
- Proper Cooling:Keep the drawworks brake system properly cooled, especially during hot weather and when tripping in the hole.
- Dry Brake Blocks:Ensure brake blocks are kept dry to prevent slippage and maintain braking efficiency.
4. Additional Tips:
- Regular Maintenance:Perform regular inspections and maintenance according to the manufacturer’s recommendations.
- Check for Leaks:Inspect for leaks in brake lines and cylinders, which can lead to reduced braking power.
- Use Proper Tools:Use the correct tools for adjustments and repairs.
- Consult Manuals:Refer to the drawworks manual for specific instructions and troubleshooting guidance.
