In mines or stone production sites, a cone crusher suddenly emitting a violent impact sound and then shutting down is a situation many operators dread. This sudden malfunction not only affects production progress but may also indicate serious equipment damage.
So, what are the possible causes? And how can we respond quickly? This article will provide a practical guide from troubleshooting to resolution, based on common failure points.
I. Possible Main Causes Analysis
1. Foreign Objects Entering the Crushing Chamber
• For example：iron blocks or non-crushable materials accidentally falling in can cause a violent collision between the moving and stationary cones.
• Characteristics: A sharp and sudden sound, possibly accompanied by an overload protection trip.
2. Loose or Broken Components
• Loose Bolts: Loosening of critical fasteners such as the main shaft and liners can cause component impact.
• Broken Components: A broken main shaft or a detached liner can cause internal imbalance and abnormal noise.
3. Poor Lubrication or Damaged Bearings
• Insufficient oil or oil quality issues can cause bearing overheating and seizing, potentially leading to bearing failure and a metallic impact sound.
• Increased bearing wear leads to increased clearance, causing more severe shaking during equipment operation.
4. Motor or Transmission System Failure
• Belt slippage, damaged couplings, and abnormal power transmission may cause impact noise.
Symons Cone Crusher PDF, Download ↓↓↓
II. Emergency Troubleshooting and Handling Steps
1. Immediately Power Off and Shut Down the Machine
• Ensure the equipment is completely stopped before conducting any inspections to avoid secondary damage or safety hazards.
2. Inspect the Crushing Chamber and External Components
• Clean the crushing chamber, checking for foreign objects or detached liners;
• Check visible components such as bolts and the main shaft for looseness or breakage.
3. Lubrication System and Bearing Condition Inspection
• Check the oil level and quality, and check for blockages in the lubrication lines;
• Manually rotate the main shaft to check for bearing jamming or abnormal noise.
4. Contact Professional Maintenance Personnel
• If internal problems cannot be directly diagnosed, disassemble and inspect core components such as the moving cone and fixed cone to avoid blindly restarting the machine.
III. Preventive Measures: Reducing Sudden Failures
• Regular Tightening and Inspection: Focus on inspecting easily loosened parts such as liners and bolts, and record wear conditions.
• Standardized Lubrication Management: Change lubricating oil periodically and monitor for abnormal oil temperature and pressure.
• Install Protective Devices: Such as metal detectors to prevent foreign object entry and automatic overload protection systems.
Sudden abnormal noises and shutdowns of cone crushers are not minor issues and may involve multiple factors. Systematic troubleshooting and daily maintenance can effectively reduce the failure rate. In complex situations, it is recommended to contact professional technicians promptly to ensure long-term stable operation of the equipment!
