To prevent fatigue damage to running pneumatic hoists, a comprehensive approach encompassing design, operation, maintenance, and environmental control is essential. Here are the key aspects to consider:

1. Design and Component Selection

Material Quality: Opt for high-strength, durable materials for critical components like chains, forks, and wheelsets. This enhances resistance to wear and fatigue.

Modular Design: Choose components that are easily disassembled for quick replacement and maintenance, reducing downtime and facilitating targeted repairs.

Vibration Isolation: Install shock absorbers in high-vibration environments to minimize dynamic stress on the hoist chain and other moving parts.

2. Operation Practices

Load Management: Avoid overloading the hoist beyond its rated capacity. Use overload sensors or limit switches to prevent excessive stress on components.

Smooth Operation: Minimize rapid cycling and abrupt starts/stops, which can accelerate fatigue. Train operators to handle loads gently and evenly.

Path Planning: In narrow spaces, plan transportation paths to avoid frequent turning, which may cause tire wear or frame deformation.

3. Maintenance Strategies

Regular Inspections:

Daily: Check for obvious damage, deformation, or leaks in connecting parts like hoses and joints.

Weekly: Clean surface oil stains, lubricate moving parts (e.g., chains, pulleys), and inspect hydraulic oil levels and quality.

Monthly: Verify hydraulic cylinder sealing, brake system sensitivity, and adjust brake pad clearance as needed.

Annually: Disassemble and inspect key components (e.g., frame, forks) for stress or wear, replacing high-strength steel parts if necessary.

Preventive Replacement: Regularly replace consumables like wire ropes, brake linings, and hydraulic oil to prevent overloading and fatigue.

Lubrication: Ensure moving parts are adequately lubricated to reduce friction and wear. Clean components before applying new lubricant.

4. Environmental Control

Corrosion Protection: In humid or corrosive environments, use corrosion-resistant materials or coatings (e.g., galvanizing, painting) to prevent surface degradation.

Temperature Management: Avoid operating the hoist at temperatures outside its recommended range, as extreme conditions can affect material properties and fatigue life.

Clean Storage: When not in use, store the hoist in a dry, ventilated area away from fire sources and corrosive substances. Regularly check storage conditions.

5. Safety and Monitoring Systems

Overload Protection: Install sensors or limit switches to prevent the hoist from exceeding its rated capacity.

Emergency Procedures: Develop plans for chain breakage or other failures, including shutdown, isolation, and rescue steps. Keep spare chains and tools on hand.

Intelligent Monitoring: Use sensors to track load cycles, operating hours, and stress levels, enabling proactive maintenance.

6. Operator Training and Awareness

Skill Development: Train operators on proper hoist use, including load handling, emergency procedures, and safety protocols.

Safety Culture: Foster awareness of fatigue-related risks and encourage reporting of unusual noises, vibrations, or performance issues.

7. Documentation and Record-Keeping

Usage Logs: Maintain records of load cycles, operating hours, and maintenance activities to track fatigue accumulation and schedule timely interventions.

Inspection Logs: Document inspection findings and corrective actions to ensure accountability and continuous improvement.

The main equipment produced by Hebei Makita: stage electric hoist, electric chian hoist, wire rope electric hoist，Hand chain hoist, lever hoist, pneumatic hoist and other lifting equipment