6results about How to "Uniform stiffness" patented technology

The application discloses a steam turbine moving blade root weight-reducing structure, a steam turbine moving blade and a manufacturing method thereof. The steam turbine moving blade root weight-reducing structure comprises a fir-type blade root and a blade root intermediate body connecting a blade body and the fir-type blade root, and a weight-reducing groove is arranged on the inner arc side of the blade root intermediate body. The opening area of the weight-reducing groove accounts for 60%-40% of the area of the inner arc side without the weight-reducing groove. After the assembly of adjacent blades is completed, the contact area of the inner arc side of the blade root intermediate body accounts for 40%-60% of the contact area of the inner arc side of the blade root intermediate body without the weight-reducing groove. The application has the advantages that the average stress level of the blade root area can be effectively reduced, the manufacturing cost of the blade is reduced, the processing difficulty of the blade is not increased, the blade root weight can be reduced, the strength and rigidity of the blade root can be effectively ensured, and the like.

The utility model relates to an embedded floating slab vibration reduction track structure, which has the advantages of an embedded track and a floating slab track by embedding a steel rail into a steel rail groove through a rail adjusting component and filler and supporting and mounting the steel rail through a floating track bed plate. The damping effect can be guaranteed, wheel track noise can be effectively reduced, for bridge floor lines and ground lines, noise radiated to the periphery by rail traffic is effectively reduced, the steel rails are almost completely embedded in the steel rail grooves in the floating roadbed slab, so that the surface of the floating roadbed slab is smooth, escape and evacuation of passengers in dangerous cases are facilitated, and the safety of the floating roadbed slab is improved. In addition, due to the fact that the bottom of the steel rail is continuously supported, the train runs more smoothly, and a series of problems caused by traditional fasteners can be avoided due to the fact that fasteners are not arranged.

This invention relates to the field of sound insulation technology and discloses a foamed aluminum-gypsum composite partition wall with high sound insulation performance. It employs a five-layer symmetrical composite structure: fire-resistant gypsum board, damping sound-insulating adhesive layer, gradient-pore-sized open-cell foamed aluminum core layer, damping sound-insulating adhesive layer, and fire-resistant gypsum board. Because the foamed aluminum core layer and fire-resistant gypsum board are bonded with environmentally friendly polyurethane structural adhesive and fixed with C-shaped cold-rolled galvanized light steel keel, the interlayer bonding is ensured to be firm and the overall rigidity uniform, preventing delamination and deformation during use. The partition wall joints utilize a double-sealing process of sealant and grooves. Internal flame-retardant sealant fills the gaps to block sound bridges and smoke passages, while external U-shaped PVC grooves combined with butyl rubber sound-insulating pads achieve full enclosure, improving long-term stability. It also boasts advantages such as lightweight, high strength, convenient construction, and good durability.

The invention discloses an elastic supporting device for a rotor system and an aero-engine, the elastic supporting device comprises a bearing seat, an elastic ring and a bearing, the elastic ring is arranged in the bearing seat and supports the bearing, the bearing is arranged in the elastic ring and is used for supporting a rotor assembly, the elastic ring comprises a sleeve, two annular bosses and a plurality of connecting ribs, and the two annular bosses are arranged in the sleeve. The sleeve is located between the two annular bosses, the connecting ribs are connected with the sleeve and the annular bosses respectively, the multiple connecting ribs are evenly distributed in the circumferential direction of the annular bosses at intervals, kidney-shaped holes are defined by the connecting ribs, the sleeve and the annular bosses, and the outer ring faces of the annular bosses and the outer ring face of the sleeve are arranged in a staggered mode in the radial direction. The inner ring face of the annular boss and the inner ring face of the sleeve are arranged in a staggered mode in the radial direction, the radial outer end of the elastic ring and the bearing seat define an outer extrusion oil film cavity, the radial inner end of the elastic ring and the bearing define an inner extrusion oil film cavity, and the kidney-shaped hole is communicated with the outer extrusion oil film cavity and the inner extrusion oil film cavity.

The application discloses a kind of composite fabric with double-sided hetero-functional and preparation method thereof, adopt the three-layer composite structure of first functional layer, intermediate layer, second functional layer from inside to outside in turn, interlayer is connected by adhesive, through the synergistic effect of double-charge surface and adhesive of intermediate layer, interlayer bonding is reinforced by electrostatic attraction direction, simultaneously charge repulsion effect blocks anion hydrophobic agent and cationic hydrophilic agent molecule mutual penetration, avoid function mutual interference;When the deformation of concave quadrilateral negative poisson's ratio structure, intermediate layer flexible base cooperates controllable gap deformation to absorb stress, prevent interlayer peeling or functional layer wrinkle, charge layer also keeps stable distribution due to electrostatic constraint;Finally realize the synergistic effect that structure stiffness is uniform under dynamic deformation, interlayer peeling strength is significantly improved, and the dual needs of structure stability and function reliability in dynamic scene such as intelligent wearing are considered.

A linear rolling guide rail and sliding guide rail combined motion guide rail pair belongs to the technical field of machinery. A rolling and friction composite guide rail structure is formed by two linear rolling friction guide rail pairs and eight sliding friction guide rail pairs. Wherein two linear rolling guide rails are used as reference guide rails for ensuring the movement precision, and the guide rail sliding block, the inclined pad and the slide carriage are tightly attached by adjusting the wedging depth of the 1-degree inclined pad. Each sliding friction guide rail pair is composed of an upper inlaid strip and a lower inlaid strip, and the sixteen inlaid strips form a three-dimensional surrounding structure with four symmetrical faces and distributed up and down. The back surface of the panel has 1: 50 inclination, and the front surface of the panel is a composite material soft belt veneer. By adjusting the wedging depth of the panel, a sliding friction pair between the front face of the panel and the ram is in an interference state. By means of the structure, the motion guide rail pair has the advantages of being moderate in friction coefficient, large in rigidity and good in anti-seismic damping characteristic.