The China National Intellectual Property Administration records indicate that Henan Weihua Heavy Machinery Co., Ltd. has obtained a patent titled "A Method for Fixed-Point Deep Excavation Control in Bucket Cranes," with the authorization announcement number CN121161888A, filed on September 2025.
The patent abstract reveals that the invention discloses a method for controlled deep excavation with a grab crane, involving the fields of grab crane handling technology and automated control technology. It includes a visual recognition module, a data processing module, a control execution module, and a safety protection module. The visual recognition module consists of a visual subsystem, a depth detection subsystem, and a force feedback subsystem. The data processing module features a data fusion unit for processing multi-sensor data and an excavation parameter optimization unit that adjusts based on soil resistance and depth requirements. The control execution module employs a frequency conversion drive unit to precisely position the grab and motor. This method for controlled deep excavation with a grab crane enables industrial cameras to recognize the target posture during lifting, calculate tilt angles and directions, and automatically follow crane control systems in response to push-pull directions. Through a technical architecture of "multi-sensor fusion perception—intelligent decision-making—precise execution," it addresses the core challenges of grab crane-controlled deep excavation, achieving multidimensional technological breakthroughs.
