Application of Safety Monitoring Systems in Large Lifting Equipment

According to the GB/T 28264-2017 standard, large lifting equipment must be equipped with safety monitoring systems to ensure safe operation. These systems are designed to monitor and inspect the operational status of lifting machinery in real-time, thereby safeguarding operational safety.

Scope of Safety Monitoring Systems

Based on national standards, the following types of lifting equipment are required to be equipped with safety monitoring systems:

• General bridge cranes with a capacity of 200 tons and above
• Metallurgical bridge cranes with a capacity of 10 tons and above
• General gantry cranes with a capacity of 100 tons and above
• Shipbuilding gantry cranes
• Tire cranes with a capacity of 100 tons and above
• Crawler cranes with a capacity of 200 tons and above
• Portal cranes with a capacity of 60 tons and above

System Components

The safety monitoring system is primarily divided into two parts:

1. Video Monitoring

The video monitoring system is equipped with cameras, recorders, hard drives, and displays. During a work cycle, the monitoring screen allows real-time observation of critical areas such as lifting points and travel zones. After a work cycle is completed, relevant video information can be retrieved, with continuous recording saved for no less than 72 hours.

2. System Monitoring

The system monitoring component includes controllers, sensors, and encoders to monitor the operational status of the crane. Key monitoring aspects include:

• Load display of the crane
• Operational positions of various mechanisms
• Limit states of various mechanisms
• Status of safety interlock devices
• Wind speed gauge status
• Brake status of the lifting mechanism
• Overspeed protection status
• Working time and accumulated working time
• Operational commands, etc.

These critical data can be viewed in real-time and recorded, with system information retained for no less than 30 consecutive working days.

Data Openness

All data from safety monitoring systems are open, featuring external interfaces for data access. During system verification checks, recorded data can be safely exported, ensuring transparency and traceability of information.

Conclusion

Safety monitoring systems play a crucial role in the operation of large lifting equipment, ensuring the safe functioning of the machinery and the safety of personnel. Through real-time monitoring and data recording, these systems effectively prevent accidents and enhance operational efficiency. Understanding the components and functions of safety monitoring systems will aid in better management and maintenance of lifting equipment.