To ensure the safe operation of suspended platforms (commonly referred to as gondolas), it is essential to establish a routine maintenance and inspection system. This system should involve both operators and dedicated personnel to regularly check and maintain the equipment. The goal is to ensure the platform remains in optimal condition and prevents accidents during its use.
1. Safety Inspections
1.1 General Guidelines
Suspended platforms that are newly installed, recently repaired, or have been idle for over one year—or suspended for more than two months—must undergo thorough inspections. These checks should be carried out by trained professionals before the platform is put into operation. Only after successful inspection and approval can the platform be used.
1.2 Inspection Items
Structural Components:
Inspect the main load-bearing parts, including the suspended platform and hanging brackets, for permanent deformations or cracks in welds.
Ensure that all critical structural elements are intact and free from visible damage.
Fasteners and Connections:
Check all fasteners at connection points to ensure they are secure and not missing or loose.
Hanging Mechanism:
Verify that the hanging mechanism is installed securely and meets the required standards.
Check that counterweights are sufficient and properly positioned.
Steel Wire Ropes:
Inspect for severe rust, kinks, or broken strands.
Ensure there are no loose wires or improper twisting.
Confirm that the steel rope clamps are properly installed and secure.
Electrical Systems:
Test the electrical control system to ensure it operates smoothly.
Check the locking and unlocking functions for proper operation.
Safety Locks:
Ensure the safety locks function correctly, including both locking and unlocking mechanisms.
Lifting and Lowering Functions:
Verify that both manual and automatic lifting/lowering mechanisms are functioning properly.
Check that the electromagnetic brake clearance meets the required standards.
Operational Components:
Inspect for unusual noises, motor overheating, smoke, or burnt odors.
Confirm there are no obstructions or issues during operation.
Gearboxes and Transmission Systems:
Ensure the gearboxes and transmission systems are properly lubricated and free of leaks.
Limit Blocks and Counterweights:
Verify that limit blocks and counterweights are installed as required and function correctly.
2. Daily Inspections
2.1 Pre-Operation Checks
Before starting daily operations, operators must:
Conduct a complete inspection of the suspended platform.
Record findings in a maintenance log.
Evaluate the platform’s condition and address any issues immediately.
2.2 Key Daily Inspection Points
Structural integrity and stability of the platform.
Secure connection of all fasteners.
Functionality of safety locks, brakes, and electrical components.
Condition of steel ropes, including tension and wear.
Proper lubrication of all moving parts.
3. Periodic Inspections and Maintenance
3.1 General Requirements
Periodic inspections are necessary to ensure the long-term safety and functionality of the platform. These inspections should be conducted at regular intervals and documented in detail.
3.2 Key Periodic Inspection Tasks
Steel Wire Ropes:
Perform a comprehensive inspection for broken strands, loose wires, and bends.
Replace steel ropes if they meet the criteria for scrapping.
Electromagnetic Brake and Cables:
Every two months, inspect the electromagnetic brake for wear on the friction pads.
Check the power cables for damage or wear.
Safety Lock Calibration:
Every six months, safety locks must be tested and recalibrated.
If users lack the proper equipment, send the locks to the manufacturer for testing.
Lubrication:
After the first three months of use, replace the gearbox lubrication oil.
Thereafter, lubricate monthly and replace oil every six months.
Apply rust-preventive oil to safety lock components after each use.
Electrical Systems:
Ensure all electrical circuits, components, and connections remain clean and dry.
Avoid accumulation of grease, dirt, or moisture.
4. Maintenance Guidelines and Fault Management
Immediate Fault Response:
If faults, abnormal wear, or other issues are detected during inspections, suspend platform use immediately.
Only qualified personnel may carry out repairs. “Operating with defects” is strictly prohibited.
Component Replacement:
Replace load-bearing or worn components promptly when they reach the end of their service life.
Documentation:
Maintain a comprehensive equipment log for each platform, detailing inspection and maintenance records.
5. Long-Term Maintenance Strategies
Comprehensive Equipment Records:
Keep an updated archive of maintenance and inspection records for each platform.
Scheduled Overhauls:
Plan for major overhauls at regular intervals based on usage intensity and environmental factors.
Environment-Specific Maintenance:
For platforms used in harsh environments, such as coastal areas or industrial zones with corrosive gases, increase inspection frequency and apply additional protective measures, such as anti-corrosion coatings.
6. Final Notes on Safe Operation
Suspended platforms are critical for high-altitude operations, and ensuring their safety is a shared responsibility between operators and maintenance personnel. By adhering to the outlined inspection and maintenance procedures, potential hazards can be identified and resolved before they lead to accidents.
Through consistent application of these practices, operators can ensure the longevity of the equipment, improve operational efficiency, and safeguard the well-being of workers.
