2results about How to "Promote lightweight development" patented technology

This invention relates to the field of rail vehicle technology, providing a train bogie and a rail vehicle. The train bogie includes a frame and a wheel drive system. The frame includes a load-bearing body and two leaf springs. A center pin channel is formed in the middle of the load-bearing body, and two mounting channels are formed along the longitudinal direction of the frame. The two leaf springs are respectively mounted in the two mounting channels. The wheel drive system includes a shaft core, a bushing, and two wheels. The shaft core is rotatably mounted inside the bushing. A gearbox is constructed on the bushing, and a driving gear is provided inside the gearbox. A driven gear is sleeved on the shaft core, and the driving gear and the driven gear mesh externally. The two wheels are respectively mounted on both ends of the bushing via bearings, and the two wheels are respectively connected to both ends of the shaft core via flexible plates. Each leaf spring has a pad at both ends, and the pad is connected to the bushing. The load-bearing body and leaf springs replace the original crossbeam and side beam structure, resulting in a significant weight reduction effect on the frame.

This utility model relates to a solid chemical oxygen generator, including a generator shell, a starting device, and an oxygen candle. The oxygen candle is housed inside the generator shell, with a heat insulation layer between the oxygen candle and the generator shell. A filter device is located on the outside of the oxygen candle, comprising a filter spiral tube coiled around the outside of the oxygen candle. The filter material is filled inside the filter spiral tube and fixed by metal meshes at both ends. The lower end of the filter spiral tube is connected to the bottom of the oxygen candle via a U-shaped conduit. This utility model integrates the spiral tube-shaped filter device inside the oxygen generator, eliminating the need for an additional filter device and facilitating the lightweight development of oxygen generators. The spiral tube structure ensures full contact between the gas and the filter material, and the heat generated by the decomposition of the oxygen candle accelerates the absorption of harmful gases by the filter material, reducing the amount of filter material required and improving filtration efficiency.