Hangcha (SH:603298) Jing Ji Guan Cha Wang·2025-09-07 12:55Core Viewpoint - Hangcha Group (603298) has recently published a patent for a "Heavy-duty Electric Forklift Hydraulic System," which aims to enhance the performance and efficiency of electric forklifts through innovative hydraulic design [1] Summary by Relevant Sections Patent Details - The patent describes a hydraulic system that includes a fuel tank, a fixed pump, and a variable pump, with the first motor driving the fixed pump and the second motor driving the variable pump [1] - The output of the fixed pump is connected to the lifting cylinder via a one-way overflow valve group, while the variable pump's output connects to the steering gear and the oil inlet of the multi-way valve through a priority valve [1] - The multi-way valve's working oil port connects to the lifting cylinder and the mast actuating components, and the return oil ports of the steering gear and multi-way valve connect back to the fuel tank [1] Performance Improvements - The design allows the multi-way valve to not need to simultaneously meet high pressure and large flow requirements, leading to significant improvements in size and cost control [1] - The system enables precise proportional control during the descent through the return oil of the multi-way valve, enhancing the lifting performance of the forklift while maintaining effective control over the mast's descent [1] - Overall, the comprehensive performance of the hydraulic system is improved, resulting in reduced system losses [1]