A gantry crane multi-machine combined hoisting cooperation system with high bearing capacity and fatigue resistance

Through the coordinated action of the state perception module and the control calculation module, the real-time strain energy dissipation of the gantry crane multi-machine hoisting system is realized when facing sudden load impacts and steady-state resonance, which solves the system fatigue damage and overturning risk and improves the system's fatigue resistance and stability.

CN122403290APending Publication Date: 2026-07-17JIANGSU HANTONG WING HEAVY IND CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGSU HANTONG WING HEAVY IND CO LTD
Filing Date
2026-04-10
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

When faced with sudden load impacts and structural steady-state resonance, the conventional rigid synchronous control strategy of existing gantry crane multi-machine hoisting systems cannot effectively dissipate strain energy, which makes the main beam and related nodes prone to fatigue damage. Furthermore, the existing yield control mechanism lacks multi-dimensional load dynamic transfer and distribution under anti-overturning constraints and low-level electrical rapid response means.

Method used

Data is collected by the state perception module, the dynamic impedance yield weight matrix is ​​calculated, and the constraint optimization model of the control solution module and the frequency converter of the torque execution module are combined to realize controlled micro-yield displacement dissipation of high-frequency fatigue strain energy. First-order differential logic unit and fast Fourier transform logic unit are used to process transient impact and steady-state resonance characteristics in parallel. Space load transfer prediction unit and global energy interlocking unit are configured for safety control.

Benefits of technology

This improves the real-time performance of the system's response to multidimensional alternating stress states, avoids computational delays and the risk of load overturning under traditional control methods, effectively dissipates the fatigue strain energy of the main beam, and ensures the stability and safety of the system.

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Abstract

本发明涉及起重设备协同控制技术领域,公开了一种高承载抗疲劳的龙门吊多机联吊协同系统,包括状态感知模块采集空间高程、动态张力与结构应力数据,提取瞬态冲击与稳态共振特征,计算动态阻抗屈服权重矩阵并输出全局状态空间矩阵,控制解算模块基于约束寻优模型处理上述矩阵,输出包含目标速度偏差指令与目标转矩限幅参数的最优控制向量,扭矩执行模块通过变频驱动器将同步参考基准速度与目标速度偏差指令叠加,依据目标转矩限幅参数对执行电机的最大电磁转矩输出能力进行动态钳位,控制起重机节点产生受控微退让位移。本发明通过底层电气级动态限幅主动耗散结构疲劳应变能,并在退让过程中保障全局防倾覆安全。
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