Structural Design and Performance Study of High Power Density All-electric Fire Tongs

In order to solve the problems of high weight, low power to weight ratio, low efficiency, and oil leakage in the hydraulic system of the existing hydraulic tongs, a fully electric fire fighting system with innovative structure, high integration, portability, and single person operation was developed. According to the system composition and specific structure of HPEFT, the core components of HPEFT were calculated, designed, and selected. The strength of the tong head shell and main shell was checked by using ANSYS Workbench software, and the dynamic performance of the system was simulated by using AMESim software. The results show that the strength of the main bearing parts meets the requirements, and the dynamic tracking performance of HPEFT system is good, with the lag time being not more than 0.1 s. The research results of this paper break through the structure of traditional hydraulic tongs. The driving realized by pure mechanical structure and the tong’s motion powered by all electricity do not need any hydraulic cylinder, pump station and other auxiliary equipment, realizing the miniaturization and portability of fire tongs, and providing a certain basis for the development of all-electric fire equipment.