30results about How to "Lightweight advantage is obvious" patented technology

The utility model relates to a spatially expandable annular tensegrity integral antenna mechanism, which relates to an antenna mechanism. The invention solves the problems that a large number of mechanical connections are required in the process of unfolding and retracting the existing deployable loop antenna, resulting in large overall mass and low deployment reliability. The main-end firmware is fixedly connected to one end of the main-end connecting pipe through pins, and the other end of the main-end connecting pipe is fixedly connected to one end of the carbon fiber pipe. Two openings are processed on the side wall of the main-end connecting pipe along its length direction, each There is a locking leaf spring corresponding to each strip-shaped opening. The driving spring is located in the carbon fiber tube. The middle part of the guide slider is processed with an annular groove along its circumference. When the antenna mechanism is unfolded, the lower part of the locking leaf spring is clamped on the guide slider. At the annular groove of the block, the lower end of the guide slider is connected with the slider screw, the guide slider is located at the upper end of the driving spring, the auxiliary end firmware is fixed on the other end of the carbon fiber tube through the auxiliary end connector, and the tension of the overall rod The number is an even number. The invention is used in the field of wireless communication.

The production method of the pearlite matrix ultra-high strength ductile ductile iron crankshaft provided by the present invention selects low-sulfur and low-titanium pig iron, ordinary carbon steel and self-produced recycled iron as the main charge, and adds specific proportions of 75% ferrosilicon and 65% high-carbon manganese Iron, electrolytic copper and graphite-type recarburizers; smelted at a specific frequency in an intermediate frequency furnace, adding nodulizers, inoculants, silicon-calcium-manganese deoxidizers, and then tapped for nodularization. The nodularization process requires a specific tapping position, speed, and tapping The first step is to select a specific inoculant flow rate and total amount during the pouring process, and adopt a specific normalizing process for the crankshaft casting to prepare an ultra-high-strength ductile ductile iron material with a strength exceeding 1000 MPa, an elongation ≥ 5%, and a matrix material of pearlite type. Its comprehensive performance far exceeds that of ordinary ductile iron and ADI materials with the same tensile strength. The preparation method is applied to J4200 crankshaft, JX400 crankshaft and other parts to realize the preparation of ultra-high strength and toughness material with pearlite matrix, reduce the cost and obtain remarkable benefits.

The invention discloses an environmentally-friendly composite mineral thermal-insulation board and a preparation process thereof, belonging to the technical field of building materials. The compositemineral thermal-insulation board includes the following components: 15 to 85 parts of non-metallic minerals, 6 to 85 parts of expanded polystyrene, 0.3 to 26 parts of polystyrene fibers, 0.5 to 28 parts of titanium dioxide aerogel, and 3 to 23 parts of nanometer titanium dioxide particles. The preparation process comprises the following steps: preparing a composite aerogel composed of the nanometer titanium dioxide particles, the non-metallic minerals and titanium dioxide, and then subjecting the obtained mixture and polystyrene foam beads to heating and foaming so as to obtain the environmentally-friendly composite mineral thermal-insulation board. The thermal-insulation board has a large number of pores, rich pore structures, and good thermal insulation, sound insulation and flame retardant properties, and can meet the demands of building construction.

The invention relates to the technical field of metal materials, especially an Al 2 Y particle and carbon nanotube hybrid reinforced ultra-light magnesium-lithium-based composite material and preparation method, which comprises the following components in weight percent: 5-20wt.% micron-scale Al 2 Y particles, 1~5wt.% nanoscale Al 2 Y particles, 0.5-3wt% of nickel-coated carbon nanotubes on the surface, 11-25wt.% of Li, the balance of Mg, and the total amount of impurity elements Si, Fe, Cu and Ni is less than 0.02wt.%. Fabrication methods include micro / nanoscale Al 2 Three steps of Y particle pretreatment, carbon nanotube pretreatment and smelting. By using β-Li single-phase ultra-light magnesium-lithium alloy as the matrix and selecting a reinforcement phase with a lower density, the magnesium-lithium-based composite material still has excellent lightweight advantages; micron / nanoscale Al 2 Y particles and carbon nanotubes are used as reinforcing phases to play different roles in strengthening of different types and scales of reinforcing phases. Hybrid reinforcement is used to achieve synergistic strengthening effects, and the strengthening effect is far superior to that of traditional single-type and single-scale reinforcing phases. composite material.

The invention relates to a high-strength, flexible and wear-resistant aluminum oxynitride / polyphenylene sulfide bionic composite joint material and a preparation method, and belongs to the cross field of biomedicine and material science. The invention provides a wear-resistant bionic composite joint material, the composite joint material comprises raw materials in the following proportions: 35-90 parts by weight of polyphenylene sulfide and 10-65 parts by weight of aluminum oxynitride. In the present invention, a bionic composite joint material is prepared by compounding PPS and AlON for the first time, and the obtained compound joint material has low density, high strength, high toughness and excellent wear resistance.

The invention discloses an aluminum profile middle floor cross beam structure. The structure comprises an upper plate body, a lower groove body and a reinforcing rib plate, the upper plate body is arranged to be of a plane plate body structure, and the cross section of the lower groove body is in a door shape and comprises a horizontal plate and two side face supporting plates. The two side face supporting plates are located at the two ends of the horizontal plate, one end of each side face supporting plate is perpendicular to the horizontal plate, the other end of each side face supporting plate is perpendicularly fixed to the lower side face of the upper plate body, a supporting cavity is defined by the upper plate body and the lower groove body, and the reinforcing rib plate is supported in the supporting cavity and is perpendicular to the upper plate body. The aluminum profile middle floor beam structure is simple in production process and high in production efficiency, better sidecollision safety is guaranteed, and light weight is better, so the practicability is high.

The invention provides a sliding and oblique insertion type single sliding door mechanism for a passenger car. The sliding and oblique insertion type single sliding door mechanism for the passenger car includes driving actuating mechanisms, a fixed track door shaft, door body of a passenger door and a side wall of a car body. The driving actuating mechanisms are installed on the door body of the passenger door and the side wall of the car body simultaneously. The driving actuating mechanisms drive the door body of the passenger door to rotate through the fixed track door shaft. The action posture of "flat sliding, oblique insertion and pull back locking" of the passenger door is achieved, the problem of the discomfort of ears of a passenger caused by the sudden change of the internal pressure of the vehicle due to the overall movement of the door when the door is just opened or is to be closed while an existing sliding door is used in the small interior space of vehicles is solved. Atthe same time, compared with existing single sliding door series, the innovative door opening and closing action postures carried out by the novel sliding and oblique insertion type single sliding door mechanism can further improve the anti-pinching safety of the passenger door when the door is to be closed.