Huashengming crusher mini(such as double-roll, jaw, and hammer models) require maintenance that combines daily operating procedures with regular inspections to ensure equipment longevity and operational efficiency.
crusher mini
1. Daily Inspection and Cleaning
Pre-startup Checks
Fasteners: Daily inspection of bolts and nuts for looseness (e.g., crushing chamber mounting bolts, motor base screws), tightening as needed.
Crushing Chamber Cleaning: Remove residual material to prevent blockages or component corrosion; verify unobstructed inlet/outlet ports.
Electrical System: Inspect cable and control box insulation to eliminate leakage risks.
Monitoring During Operation
Abnormal Vibration and Noise: Immediately shut down upon detecting anomalies to investigate bearing wear or rotor imbalance.
Lubrication Status: Observe for grease leakage and verify normal bearing temperatures (shut down for inspection if overheating occurs).
Post-Shutdown Maintenance
Complete Chamber Cleaning: Ensure no residual material remains in the crushing chamber before shutdown to prevent material caking.
Surface Cleaning: Remove dust and oil residue from equipment surfaces to prevent corrosion (avoid direct high-pressure water jets on electrical components).
2. Lubrication System Maintenance
Regular Lubrication
Bearing Lubrication: Check grease level per shift; replenish every 8 operating hours. Completely replace grease every 3-6 months (use high-temperature grease in summer, low-temperature grease in winter).
Hydraulic System: Inspect hydraulic oil cleanliness; filter or replace regularly (repair hydraulic cylinder leaks immediately).
Lubrication Operation Standards
Clean oil nozzles before filling to prevent contamination; replace grease after cleaning bearings if it deteriorates (darkening, clumping).
3. Wear Parts Inspection and Replacement
Critical Wear Parts List
| Components | Inspection Cycle | Replacement Criteria |
|---|---|---|
| Hammer Head/Liner Plate | Daily | Wear exceeding 30% of original thickness or cracks appearing |
| Roller Shell (Twin Rollers) | Weekly | Uneven wear or groove depth exceeding 5mm |
| Jaw Plate | Weekly | Tooth tips worn flat or localized fractures |
Replacement Precautions
Operate with power disconnected. Post a “Warning Sign” and assign dedicated supervision.
Huashengming patented high-chromium alloy roll liners typically last 2-3 years, but inspection frequency should be adjusted based on material hardness.
4. Operating Procedures and Safety
Startup/Shutdown Process
Before startup, confirm no foreign objects in the crushing chamber. Run idle for 1-2 minutes before feeding material. Before shutdown, stop feeding, clear the chamber, then disconnect power.
Safety Precautions
Disconnect main power during maintenance. For hydraulic system repairs, release internal pressure (slowly loosen grease nipples).
Wear protective gear during dynamic maintenance and coordinate start/stop signals with operators.
5. Scheduled Maintenance Plan
| Maintenance Level | Cycle | Main Tasks |
|---|---|---|
| Routine Maintenance | Daily | Cleaning, bolt tightening, lubrication point inspection, recording operating parameters |
| Level 1 Maintenance | Monthly | Comprehensive tightening, lubrication system flushing, electrical circuit inspection |
| Level 2 Maintenance | Semi-annually | Wear assessment of vulnerable components, hydraulic system seal replacement, motor insulation testing |
| Seasonal Maintenance | At seasonal transitions | Replace with temperature-appropriate grease, inspect cooling system (if applicable) |
