10results about How to "Reduce drag coefficient" patented technology

This utility model provides a front wheel dam and a vehicle, belonging to the field of automotive parts technology. It includes a dam positioned in front of the vehicle's front wheel, with a guide vane at its bottom edge. The bottom end of the guide vane is inclined towards the front wheel, and a vertically positioned flap is located at the bottom of the guide vane. This utility model can guide airflow, preventing it from directly impacting the wheels, while also reducing the drag of the dam itself, thus helping to reduce the vehicle's drag coefficient.

The application provides a solid-state laser radar built in a vehicle headlamp and a point cloud processing method, comprising: a vehicle lamp shell, which is internally separated into an illumination cabin and a radar cabin, and a heat insulation layer is arranged between the illumination cabin and the radar cabin; a solid-state laser radar is arranged in the radar cabin and comprises a VCSEL emission array, a SPAD receiving array and a signal processing and control circuit; a heat dissipation layer is arranged in the radar cabin; based on the above structure, the application provides a solid-state laser radar point cloud processing method built in a vehicle headlamp, wherein the solid-state laser radar is two, a first solid-state laser radar installed in a left front vehicle lamp and a second solid-state laser radar installed in a right front vehicle lamp, which can not only improve the field of view range, but also form a field of view overlapping area in front of the vehicle, so that the point cloud monitoring density and accuracy in the overlapping area are significantly improved.

The utility model discloses a geotextile positioning device for concrete guardrail maintenance, and belongs to the technical field of geotextile positioning. A geotextile positioning device for concrete guardrail maintenance comprises a device body, the device body comprises a rotating shaft, a first positioning piece and a second positioning piece which are hinged to each other are arranged at the rotating shaft, and the first positioning piece is provided with a first attaching part attached to the outer wall of the outer side of a concrete guardrail; the second positioning piece is provided with a second attaching part attached to the outer wall of the inner side of the concrete guardrail; the first positioning piece and the second positioning piece are each provided with a balance weight piece. The first attaching part of the first positioning piece is attached to the outer wall of the outer side of the concrete guardrail, and the second attaching part of the second positioning piece is attached to the outer wall of the inner side of the concrete guardrail, so that the geotechnical cloth covering the guardrail is fixed, and the phenomenon that the geotechnical cloth is not attached to the surface of the guardrail due to the influence of the external environment is prevented.

The utility model relates to the technical field of rainwater collection, and provides a motor home rainwater collection device which comprises a water tank and further comprises a filtering assembly arranged in the water tank, the filtering assembly comprises two clamping grooves which are formed in the centers of the opposite faces in the water tank, and clamping plates are movably arranged in the two clamping grooves; the two filter screen plates are fixedly arranged on the opposite surfaces of the two clamping plates; the collecting assembly is arranged on the outer surface of the water tank; the two filter screen plates are embedded into the water tank through the clamping plates, the two clamping plates are embedded into the clamping grooves, the stability of the two filter screen plates can be improved, the two filter screen plates are more stably embedded into the water tank, collected rainwater is filtered, a certain gap is formed between the two filter screen plates, impurities in the rainwater are better filtered, and the rainwater collecting efficiency is improved. The filtering openings of the two filtering net plates are different, and the filtering holes close to the lower ends are small, so that small impurities in rainwater are intercepted, and the cleanliness of the rainwater is improved.

This invention relates to the field of overhead power transmission conductor technology, and in particular to a tenon-and-mortise interlocking ultra-high strength aluminum alloy steel core conductor and its preparation method. The conductor comprises an ultra-high strength steel core and an outer ultra-high strength aluminum alloy conductive layer. The ultra-high strength steel core is a G3A grade galvanized steel core, and the ultra-high strength aluminum alloy conductive layer is composed of 3-4 layers of S / Z type tenon-and-mortise interlocking wires concentrically stranded. The S / Z type tenon-and-mortise interlocking wires are a single-layer, single-wire concave-convex interlocking structure. This invention optimizes the Mg-Si-Zr-RE-B multi-element alloy composition system, achieving a Mg to Si mass ratio of 1.0-1.4, and combines this with a "solution-cold drawing-double-stage aging" process. This maintains high conductivity while increasing tensile strength to ≥360MPa, achieving an excellent match of high strength and high conductivity, and significantly improving strength while ensuring unchanged conductivity.

The application provides a high altitude balloon launching method and a composite high altitude balloon. The high altitude balloon launching method comprises the following steps: putting the high altitude balloon into a windproof air bag, and connecting the high altitude balloon, a cable and a gondola in sequence; arranging winch pull ropes on the periphery of the windproof air bag, and arranging cutters on the winch pull ropes respectively; filling air into the windproof air bag and filling helium into the high altitude balloon, and controlling the pressure difference between the windproof air bag and the high altitude balloon within a preset pressure difference range after the filling is completed; releasing the windproof air bag and synchronously releasing the winch pull ropes; cutting the winch pull ropes by using the cutters when the distance between the gondola and the ground is greater than a first safety height; and detaching the windproof air bag to make the windproof air bag separate from the high altitude balloon when the distance between the gondola and the ground is greater than a second safety height. The high altitude balloon launching method and the composite high altitude balloon provided by the application aim to solve the problem that the wind resistance of the high altitude balloon is weak and the high altitude balloon is easy to be damaged in the launching process in the prior art.

The application discloses a trailer mounting method for a deep water test pool and relates to the technical field of deep sea engineering, which comprises the following steps: S1, basic frame manufacturing and installation: taking the center line of the on-site pool as the X-Y trailer installation reference, manufacturing and installing the basic frame; S2, X-Y trailer main body installation (including the wheel set); S3, drive device installation; S4, auxiliary trailer installation; S5, hydraulic brake system installation; S6, guide device installation; S7, cleaning device installation; S8, speed measuring device installation; S9, welding and fixing the buffer support according to the on-site actual measurement size, synchronously welding the front and rear buffer blocks of the X-Y trailer; installing the hydraulic buffer on the buffer support; S10, electric control cabinet positioning base and electric control circuit installation; and S11, power supply system installation: the slide wire is hung on the installation support through the insulator, and the carbon brush slider of the current collector on the main trailer is kept in close contact with the lower surface of the slide wire. The application effectively solves the installation problem caused by the space sealing of the laboratory through the step-by-step assembly scheme.

The invention relates to a framework structure of a flexible pipeline, the flexible pipeline and a machining method of the flexible pipeline, and the framework structure comprises a framework unit which is coaxially arranged with the flexible pipeline; the framework unit comprises a framework; the framework extends in the circumferential direction of the flexible pipeline to form a spirally-wound S-shaped interlocking structure. A gap is formed in the framework in the axial direction of the flexible pipeline; the shielding unit comprises a shielding body, the shielding body is wound along the inner side of the framework to form a spiral structure, the shielding body and the framework are embedded, and the shielding body is close to the side, where a medium is located, in the flexible pipeline; the shielding body comprises a body and a bending part, and the bending part extends to the gap. The shielding body is installed in the framework and can shield gaps of the pipeline framework, so that the flow-induced pulsation phenomenon is effectively restrained, the flow choking coefficient of a rough pipeline is reduced, and the conveying efficiency of a medium is improved; the problems of tedious operation, low inhibition effect and high cost in the prior art are solved.

This utility model relates to a wind-resistant vehicle body, comprising a main body consisting of a front fascia, side fascias, a roof, a floor, and a tailgate. The three sides of the roof facing away from the tail are curved beams with a smoothly transitioning curved surface structure. One side of the tail is a non-curved beam with a tail fin installed. Multiple teardrop-shaped air guides arranged in a predetermined direction are integrally formed on its corrugated plate. Curved columns are installed on both sides with extended end faces. After installation, these extended end faces overlap and connect with corresponding parts of the front and side fascias, forming a curved surface structure at the transition between the front and side fascias. An arc-shaped cover is installed at the junction of the curved columns and the roof, completely enclosing the junction to form a curved surface structure. This utility model, through the curved beams, curved columns, and arc-shaped cover forming multiple smoothly transitioning curved surface structures, effectively reduces airflow impact and eddies caused by traditional right-angle or acute-angle connections. The teardrop-shaped air guides guide the orderly flow of air from the roof, reducing turbulence interference.

This application relates to the field of vehicle component technology, and discloses a fixed glass assembly, a vehicle door, and a vehicle. The fixed glass assembly includes: a glass element; a bright strip frame having a first surface facing outwards along the width direction of the vehicle, the first surface including a first region and a second region distributed from front to rear along the length direction of the vehicle, the second region being recessed from the first region, at least the front edge of the inner surface of the glass element being fixed to the second region, and the outer surface of the glass element being flush with the first region; a support frame located on the edge of the inner surface of the glass element in a region not covered by the bright strip frame; the bright strip frame and the support frame are respectively used for connection with the door sheet metal of the vehicle door. The fixed glass assembly of this application, with its coordinated design of the bright strip frame and the glass element, eliminates the visual difference between the glass element and the vehicle body components, maintains the overall harmony of the vehicle's appearance, and also reduces wind noise and drag coefficient.