3results about How to "Impact resistant" patented technology

The utility model discloses a tethered lighting unmanned plane with air duct heat dissipation structure relates to unmanned plane technical field, this tethered lighting unmanned plane with air duct heat dissipation structure, including unmanned plane main part. The utility model discloses through annular air duct, air duct inner wall several heat dissipation fins, air duct side surface LED lighting module and the setting of heat pipe heat transfer structure, when using, utilize the downwash airflow of propeller to flow through air duct heat dissipation structure, effectively take away the heat of LED lighting module and produce, be applicable to high -power, long -time lighting task, secondly adopt heat pipe and air duct initiative heat dissipation structure, need not additional fan just can realize high -efficient cooling, and, air duct material is high -strength aluminum alloy material, possesses anti -impact and falling protection ability, and this unmanned plane system has high heat dissipation efficiency, strong structural safety and strong environmental adaptability etc. Characteristics, be applicable to emergency lighting, disaster rescue, night rescue etc. Variety scene.

The utility model relates to the technical field of core drilling, especially to a gearbox for core drilling machine. The gearbox comprises a box body, an input shaft, an intermediate rotating shaft, an output shaft and a shift fork mechanism. The input shaft is provided with a driving gear. The intermediate rotating shaft is provided with a driven gear, a clutch gear and an inner-outer connecting gear in sequence from top to bottom. The driving gear and the driven gear are in mesh with each other. The clutch gear rotates with the intermediate rotating shaft and moves up and down along the axial direction of the intermediate rotating shaft. The inner surface of the inner-outer connecting gear towards the clutch gear end is provided with internal teeth, and the outer surface of the inner-outer connecting gear away from the clutch gear end is provided with external teeth. The output shaft is provided with a second gear and a first gear in sequence from top to bottom along the axial direction. The shift fork mechanism drives the clutch gear to move up and down along the axial direction of the intermediate rotating shaft. The gearbox can switch the output shaft between low-speed rotation and high-speed rotation, so that the drill rod can meet various working requirements of low-speed heavy load and high-speed light load, and the working range of the drilling machine is improved.

This invention discloses a nano-deposited, heavy-duty anti-corrosion graphene composite nano-coating, which is composed of the following components by weight: 66-82 parts of a polyimide-toughened polyphthalonitrile resin composition solution; 1-2 parts of nano-calcium silicate; 1-2 parts of nano-silicon nitride; 1-2 parts of graphene; 3-5 parts of 1,3,5-tris(trimethoxysilylpropyl)isocyanurate; 2-3 parts of lead powder; 1-2 parts of chromium carbide powder; 1-2 parts of tungsten powder; 1-2 parts of cobalt powder; 1-2 parts of silicon carbide; 1-2 parts of tungsten carbide powder; 1-2 parts of nickel powder; 1-2 parts of boron powder; 1-2 parts of rhenium powder; 1-2 parts of zirconium carbide powder; and 1-2 parts of zirconium oxide powder. After baking, cross-linking, and curing, the coating forms a powder coating with properties such as high temperature resistance, resistance to rapid heating and cooling, fire resistance and scorching prevention, heat insulation and heat dissipation, resistance to damp heat, salt spray resistance, impact resistance, and low friction.