Recently, the first mechanical clamping assist arm at Shendong Coal was officially put into service at the coil insertion team of the water pump repair workshop of the No. 3 Equipment Repair Plant. This has completely transformed the traditional manual handling and maintenance of large and medium-sized water pump stators, marking a departure from high-intensity manual operations and ushering in a new era of mechanized, intelligent, and safe maintenance for Shendong Coal’s water pump repair operations, thus laying a solid equipment foundation for improving frontline safety, productivity and quality.
The coil insertion team of the No. 3 Equipment Repair Plant is primarily responsible for core tasks such as coil insertion, maintenance, and repair of large and medium-sized water pump stators ranging from 15 kW to 45 kW, making it a key team ensuring the stable operation of various water pump units in the mining area. To effectively address on-site operational challenges, strengthen workplace safety responsibilities, and meet the requirements for reducing worker intensity while improving efficiency, the No. 3 Equipment Repair Plant conducted field research, operational condition analysis, repeated validation, and scientific equipment selection based on actual production needs and critical on-site requirements. This led to the precise implementation of the mechanical clamping assist arm retrofitting project, successfully completing equipment installation, debugging, trial operation, and official commissioning. The equipment has a rated load capacity of 100 kg, and its performance parameters fully cover the transfer and maintenance needs of all types of large and medium-sized water pump stators handled by the team. It is equipped with multiple safety protection systems, including hydraulic clamping, precise electronic control adjustment, and emergency locking protection, enabling fine and accurate control of clamping force and rotation angle. In addition, the equipment adapts to various complex working environment in the workshop and offers strong compatibility and practicality.
Compared with the traditional manual operation mode, the newly commissioned mechanical clamping assist arm represents a significant upgrade in operational methods. One worker along can independently complete the entire process of workpiece clamping, automatic lifting, smooth transfer, and precise positioning, completely replacing extra labor, high-intensity manual handling. Since its commissioning, the equipment has eliminated the safety risks and occupational health hazards associated with manual handling at the source, significantly reduced frontline workers’ labor intensity, and effectively prevented safety incidents such as workpiece collisions and personal injuries. At the same time, standardized mechanical operations have streamlined the maintenance process, improving the precision and efficiency of stator transfer and repair, shortening equipment maintenance lead times, and comprehensively enhancing the standardization and lean management of maintenance operations.
