Solution for Crane Torque Limitation

System Overview :

The Maixin torque limiting system collects real-time working state parameters of the crane through pressure, length, angle, and other state detectors. After processing, it accurately determines whether the crane is within the safe working range, and displays the actual working parameters of the crane in text/graphics on the LCD display: crane arm length (length L), elevation angle (angle A), working radius (amplitude R), rated lifting capacity (MW), actual lifting capacity (AW), and torque percentage (P), providing great convenience for crane operators to comprehensively understand the working status of the crane. When the crane exceeds 90% of its rated torque, the system will promptly issue a warning signal; When the set alarm value is reached, an alarm signal is issued and the crane control mechanism is used to quickly cut off the crane's movement in the dangerous direction, limiting the crane to only move in the safe direction until the dangerous state is lifted. The Maixin torque limiting system is controlled by a microcomputer and adopts a modular structure. It has made significant improvements in accuracy, safety and reliability, system operability, debugging methods, and standardization. Especially for installation and debugging, all use their own panel buttons for operation, and display prompts in graphics or text, making debugging simple, intuitive, and user-friendly.

The main monitoring interface is described as follows:

1. The green area represents the amplitude range corresponding to the rated torque between 0% and 90%

2. The yellow area represents the amplitude range corresponding to the rated torque between 90% and 99.9%

3. The red area represents the amplitude range when the rated torque exceeds 99.9%

4. When the progress bar reaches the boundary between the green and yellow areas, the force limiter will beep intermittently. When the progress bar moves to the boundary between the yellow and red areas, the force limiter will continue to beep and cut off the dangerous direction action.

System composition:

During the operation of various types of cranes, if the actual lifting weight (lifting capacity) exceeds the rated range, it will cause damage (breakage or cracking) to the main steel structural components of the crane or even the whole machine to overturn, with unimaginable consequences. The torque limiting system can provide safety assurance for your lifting equipment, effectively prevent overloading operation, avoid safety accidents of the crane, and fully utilize the potential of the equipment. The Maixin torque limiting system integrates microelectronics technology, intelligent fault diagnosis technology, and dynamic system monitoring technology, integrates hydraulic system mathematical modeling technology, adopts industrial grade high-resolution color display, and forms a new intelligent safety monitoring system with sensors and control modules. Adopting a large number of new research results in design, absorbing numerous advantages of similar products, and redesigning on this basis, the performance has been significantly improved and the reliability has been significantly enhanced. It is an intelligent monitoring system for construction machinery with advanced domestic level. The company is based in the construction machinery industry and is committed to exploring and innovating new technology applications in the fields of electronicization, electro-hydraulic integration, informatization, and complete system integration of Chinese construction machinery products. It promotes the research and industrialization of key components of construction machinery control systems and continuously enhances the core competitiveness of the enterprise in the industry technology field.

Function introduction:

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