3results about How to "Increased longitudinal stiffness" patented technology

The application provides a small satellite platform structure which carries a large amount of propellant and is connected and separated in point mode, belongs to the technical field of spacecraft structure, and comprises a frame, a bottom plate, a lower cabin partition plate, a storage tank support rod, a middle layer plate, an upper cabin partition plate, a top plate and a side plate, so that the side plate surrounds the parallelly arranged bottom plate, middle layer plate and top plate into a closed box body, the bottom plate is connected to the frame, the storage tanks are arranged diagonally in the round holes on the bottom plate and the middle layer plate, and the storage tank support rods are uniformly distributed around the round holes; the middle layer plate separates the box body into an upper cabin and a lower cabin, the upper cabin partition plate is connected in the upper cabin, and the lower cabin partition plate is connected in the lower cabin. The application proposes a configuration of "point connection + storage tank sinking", meets the demand of the small satellite platform for carrying a large amount of propellant, effectively reduces the whole satellite center of mass, and improves the satellite dynamic environment; meanwhile, the bottom main load-bearing frame cooperates with a detachable adapter block, can adapt to different mechanical interfaces of launch vehicles, and realizes point connection and separation.

This invention discloses a low-floor all-aluminum vehicle chassis, consisting of a front axle, a central battery compartment, and a rear axle module connected sequentially. The central section is low, while the sides are higher, with a height difference of 240–250 mm. The load-bearing frame of the central battery compartment connects the crossbeams and longitudinal beams via mortise and tenon joints, forming a grid-like inner frame and three battery compartments, upon which the floor is mounted. The front and rear axle modules are connected to the frame and crossbeams via mortise and tenon joints, supplemented by mechanical reinforcement. This invention employs a three-segment all-aluminum height-difference structure, achieving lightweight, high rigidity, and high battery capacity synergistically for a 6-meter-class Class I low-floor minibus. The grid-like inner frame formed by the central grid-like mortise and tenon joints enhances rigidity and optimizes force transmission, while also forming three battery compartments, increasing battery capacity from 71 kWh to 105 kWh, significantly extending range. The all-aluminum design reduces weight by over 1 / 3, lowering energy consumption. The modular design improves assembly precision and efficiency, overcoming the technical bottleneck of adapting all-aluminum structures to Class I low-floor designs, providing an accessible, low-carbon, and highly reliable microbus chassis solution.

The invention discloses a modular assembly type concrete channel system suitable for abrupt slope mountainous regions, and relates to the technical field of hydraulic engineering and slope treatment, in particular to a modular assembly type concrete channel system suitable for abrupt slope mountainous regions, which comprises an anti-slide pile foundation and a channel main body module arranged on the anti-slide pile foundation. The channel body module is of a U-shaped structure, a male opening is formed in the front end of the channel body module, a female opening is formed in the rear end of the channel body module, and a rubber waterstop is embedded in the inner side of the female opening to achieve sealing connection. The multiple channel main body modules are in butt joint through male and female openings, and prestressed steel cables penetrate through the channel main body modules to enhance integrity. The upper end of the module is lapped with a cover plate, and the inner side wall is provided with drainage holes. The system adopts a modular assembly design, is simple and convenient to construct, can effectively adapt to abrupt slope terrains, and improves the anti-sliding stability and the anti-seepage performance.