Maintenance and Repair Guidelines for Wear-Resistant Parts in Concrete Mixers

1. Overview of Wear-Resistant Parts

The key wear-resistant components of a concrete mixer include:

• Mixing Blades: Used to thoroughly mix concrete materials.

• Mixing Arms: Connect the mixing blades to the mixer drum and transmit power.

• Liners: Installed on the inner wall of the drum to protect it from wear.

• Discharge Door: Controls the flow of concrete when discharging.

• Bearings: Support the rotation of the mixing drum.

These parts are prone to wear over time, which can affect mixing performance and the overall efficiency of the equipment.

2. Daily Maintenance

1. Cleaning

• After each workday, clean the inside of the mixer thoroughly using a high-pressure water jet to remove any remaining concrete.

• Regularly inspect the discharge door and weighing hopper valves to prevent blockage.

2. Lubrication

• Regularly lubricate all moving components to reduce friction and prolong service life.

• Check bearings and gears, and replace lubricants as needed.

3. Fastening Checks

• Regularly inspect all fasteners to prevent loosening, which can cause abnormal wear.

• Ensure the bolts securing blades and liners are tight.

3. Repair and Replacement Considerations

1. Scheduled Replacement

• Replace wear parts according to their wear levels to avoid unexpected downtime.

• Always use original manufacturer parts to ensure quality and proper fit.

2. Professional Operation

• All part replacement and repairs should be performed by trained professionals to prevent secondary damage.

• Ensure new blades match the original in size and shape when replacing.

3. Record Management

• Maintain detailed maintenance logs, recording each repair, replacement, and date. This helps with future management and traceability.

4. Tips for Extending Service Life

• Proper Operation

• Avoid overloading the mixer and schedule work efficiently to reduce equipment fatigue.

• Implement protective measures when operating in harsh environments to minimize external impact.

• Environmental Protection

• Inspect for corrosion regularly in humid or corrosive environments and apply protective treatment as needed.

• Avoid prolonged exposure to direct sunlight to prevent high-temperature damage.

• Operator Training

• Conduct regular training for operators to improve skills and maintenance awareness.

• Encourage timely reporting of operational issues to facilitate prompt resolution.