The Automatic Safe Load Indicator (SLI) for Loader Cranes is a smart overload protection and lifting safety system designed for truck-mounted loader cranes. The system continuously monitors load, boom geometry, and lifting limits to prevent overload, structural damage, and unsafe lifting conditions.

This solution enhances operator awareness, protects equipment, and ensures safe and efficient material handling operations.

Key System Components

1. Tensiometer (Load Sensor)
Installed on the lifting rope, the tensiometer measures the actual load in real time.

Functions:
• Continuous load monitoring
• Overload detection and warning
• Provides accurate load data for safe lifting calculations

2. Cable Rolling Drum (Boom Angle & Length Sensor)
Installed on the boom, the cable rolling drum contains dual inbuilt sensors to measure boom angle and boom length.

Functions:
• Provides real-time boom geometry data
• Enables accurate working radius calculation
• Supports SLI safe load computation

3. Limit Switch (Anti Two Block Protection)
Installed near the boom tip, the limit switch prevents over-hoisting.

Functions:
• Prevents hook block collision with boom tip
• Protects crane structure and wire rope
• Enhances lifting safety

4. Monitoring Display Unit
Installed in the operator cabin, the monitoring display provides real-time lifting data and safety alerts.

Displays:
• Actual load and Safe Working Load (SWL)
• Boom angle and boom length
• Warning and alarm messages
• System status and operating mode

How the System Works
The SLI system gathers real-time data from sensors and processes it using built-in crane load charts. The system continuously calculates the safe lifting capacity based on crane configuration and operating conditions.

When unsafe conditions occur, the system provides:
• Visual warnings
• Audible alarms
• Overload alerts

Key Features
• Real-time load monitoring and overload protection
• Accurate boom angle and length measurement
• Anti-Two Block protection
• User-friendly monitoring display
• Designed for truck-mounted loader cranes
• Rugged and reliable for harsh working environments

Benefits
• Prevents crane overloading and equipment damage
• Improves operator awareness and safety
• Reduces downtime and maintenance costs
• Enhances lifting efficiency and productivity
• Promotes safe and compliant lifting operations