37results about How to "Promote lightweight development" patented technology

The invention discloses a chassis of a full-aluminum carriage. The chassis of the full-aluminum carriage comprises a bottom edge frame, sub longitudinal beams and transverse beams, wherein the bottom edge frame comprises four edge frame beams which are connected with each other to form a rectangle, wherein the two parallel edge frame beams are transverse edge frame beams; and the other two edge frame beams are longitudinal edge frame beams; at least one the sub longitudinal beam is arranged in the bottom edge frame; the two ends of the sub longitudinal beam are connected with a transverse edge frame beam in an inserted way; at least one transverse beam is arranged in the bottom edge frame; the two ends of the transverse beam are connected with a longitudinal edge frame beam in an inserted way; each transverse beam is connected with each sub longitudinal beam in an inserted way at the crossed part; and the edge frame beams, the sub longitudinal beams and the transverse beams are all made of aluminum alloys. According to the invention, as the beams are connected with each other in an inserted way, the carriage framework forms an integrated structure so that the carriage obtains enough rigidity and strength to satisfy loading requirements. According to the invention, as the sub longitudinal beams are connected with the transverse beams in an inserted way, the end parts of the sub longitudinal beams are inserted in the transverse edge frame beams and the end parts of the transverse beams are inserted in the longitudinal edge frame beams, the chassis forms an integrated structure so that the chassis obtains enough rigidity and strength to satisfy loading requirements of the carriage.

The invention discloses a polypropylene composite material automobile water tank cross beam and a preparation method thereof, and belongs to the field of composite materials. The water tank cross beam includes the following components by the mass percentage: 40%-80% of polypropylene, 0%-30% of a toughening agent, 5%-60% of a fiber reinforcement body, 0.3%-0.5% of an antioxidant, 0%-1% of a color master batch and 0.5%-3% of a compatibilizer. The preparation method of the water tank cross beam comprises the steps: extruding the above components by a double-screw extruder, granulating, and then carrying out injection molding through an injection molding process to obtain the polypropylene composite material automobile water tank cross beam. The prepared water tank cross beam is smaller in density, better in rigidity and better in impact performance, the weight of the water tank cross beam is significantly reduced, weight reduction of an automobile body is facilitated, and the technical indexes of the water tank cross beam are met. With adopting of the polypropylene material, the cost is lower, the processing technology is simple, molding is easy, and the production economy and efficiency of the water tank cross beam are improved.

The invention discloses a design and calculation method for the wall thickness of a steel valve body of an industrial valve, which belongs to the field of industrial valve design. The present invention overcomes the deficiencies in the prior art, and provides a new design and calculation method to calculate the wall thickness of the valve body, which includes the following steps: first calculate the wall thickness of the base valve body and the branch roads outside the bifurcation area, and then calculate the The wall thickness of the fork area; according to the shape characteristics and forming methods of the basic valve body and branch, different calculation methods are used to obtain the initial wall thickness; the wall thickness of the bifurcation area is calculated and checked by force balance, based on The pressure load area and the compensated effective metal cross-sectional area size determine the wall thickness in the bifurcation region. The invention comprehensively considers the shape and forming method of the valve body, thereby making the design of the valve more reasonable, reducing the wall thickness of the valve body, reducing the weight of the valve body, improving the existing design method of the valve body, and promoting the lightweight development of the valve , which has scientific guiding significance for guiding valve design calculations.