Load Moment Indicator System
A Load Moment Indicator (LMI) is a safety device commonly used in cranes and lifting equipment to monitor the load moment, which is the combination of the load’s weight and its distance from the equipment’s center of rotation. It continuously evaluates this load moment during lifting operations, providing real-time feedback to operators to ensure that they remain within safe operating limits. The LMI alerts operators when the load moment approaches or exceeds predefined thresholds, helping to prevent overloading and potential accidents. Overall, the LMI plays a crucial role in promoting safe lifting practices and minimizing the risk of accidents or equipment damage.Â
With Perfect Vision’s Load Moment Indicator (LMI) systems, safety for workers is ensured by continuously monitoring load moments during lifting operations. These systems offer real-time feedback and alerts to help operators maintain safe working conditions and prevent accidents. By prioritizing proper load handling practices, Perfect Vision’s LMI systems contribute significantly to a safer environment for all workers involved.Â
LMI Specification
| Components | Articulated Crane | Crawler Crane | Broom Truck | Mobile Crane (Telescopic) | Forklift | Excavator | Side Broom Truck |
|---|---|---|---|---|---|---|---|
| Display Screen | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Load Cell | Optional | ✓ | ✓ | ✓ | ✓ | ||
| A2B Switch | ✓ | ✓ | ✓ | ✓ | |||
| Length Sensor | ✓ | ✓ | ✓ | ||||
| Angle Sensor | ✓ | ✓ | ✓ | ✓ | |||
| Pressure Sensor | ✓ | Optional | Optional | Optional | |||
| Control Unit | ✓ | ✓ | ✓ | ✓ | |||
| Anemometer | ✓ | Optional | |||||
| Tilt Angle Sensor | ✓ |
Different Types of Load Moment Indicator
Articulated Crane LMI
Designed for articulated cranes, this LMI monitors the load moment during lifting operations, providing real-time feedback to operators to prevent overloading and accidents.
Crawler Crane LMI
Catering to crawler cranes, this LMI ensures safe lifting operations by continuously monitoring the load moment and alerting operators to potential risks or overloads.
Boom Truck LMI
Used in boom trucks for various lifting tasks, this LMI monitors load moments to prevent overloading and maintain safe lifting practices in construction and utility work.
Mobile Crane (Telescopic) LMI
Tailored for mobile cranes with telescopic booms, this LMI system offers real-time monitoring of load moments, contributing to safe and efficient lifting operations across various construction and industrial settings.
Forklift LMI
Developed for forklifts, this LMI system enhances safety by monitoring load moments and providing operators with critical feedback to prevent overloading and ensure safe material handling.
Excavator LMI
Designed for excavators, this LMI system monitors load moments during digging and lifting operations, ensuring safe and efficient excavation tasks in construction and mining environments.
Side Boom Truck LMI
The Side Boom Truck LMI is a safety system tailored for side boom trucks used in pipeline construction, monitoring load moments to ensure safe material handling during lifting operations.
Manlift LMI
A manlift LMI is a safety system for aerial work platforms, preventing overloading and ensuring secure elevation of personnel and materials. It offers vital real-time feedback for safety in industrial and construction contexts.
Understanding the Functionality of Load Moment Indicator (LMI)
The Load Moment Indicator (LMI) operates by continuously monitoring the load being lifted by a crane or other heavy equipment and calculating the load moment, which is the product of the load weight and its distance from the center of rotation. Using sensors and advanced algorithms, the LMI assesses the load moment in real-time throughout the lifting operation. If the load moment approaches or exceeds safe limits, the LMI triggers visual and audible alarms to alert the operator. These alarms prompt the operator to take corrective action, such as reducing the load or adjusting the equipment’s position, to prevent overloading and potential accidents. By providing immediate feedback and safety warnings, the LMI helps ensure safe lifting practices and protects both personnel and equipment from harm.Â
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