6results about How to "Improve the distribution pattern" patented technology

The invention discloses a porous gas thrust bearing with an elastic ring type squeeze film damper, and belongs to the technical field of mechanical bearings. Comprising a bearing base internally provided with a damper mounting groove, an elastic ring, a grading ring, an oil seal and a fan-shaped transmission element which are sequentially arranged in the damper mounting groove from bottom to top, a bearing cover arranged on the outer side of the damper mounting groove and connected to the end face of the bearing base, and a tilting pad and a porous mass block which are arranged on the outer side of the bearing cover. T-shaped connecting plates are connected to the outer end faces of the fan-shaped transmission elements through flexible pivots, T-shaped grooves are formed in the inner end faces of the tilting pads, and the T-shaped connecting plates of the fan-shaped transmission elements are connected with the molded surfaces of the T-shaped grooves in a matched mode through penetrating rectangular holes formed in the outer side faces of the bearing covers in a penetrating mode. The T-shaped groove is connected with the T-shaped connecting plate in a matched mode, elastic bending deformation is generated through the flexible pivot to drive the tilting pad to swing in a self-adaptive mode, the bearing structure is simplified, the service life of the bearing is prolonged, and the reliability of the bearing is improved.

A novel row lens comprises a light incident surface and a light emergent surface, the light incident surface is a plane, and the novel row lens is characterized in that the light emergent surface comprises two side light emergent surfaces which are distributed on the two sides of a central division surface of the light emergent surface and are symmetrical to each other; three to six side light-emitting planes which are sequentially and linearly connected end to end are distributed on the side light-emitting face. And the three to six side light emitting planes are symmetrically distributed along the orthogonal plane of the central dividing plane.

The invention relates to a high thermal conductivity and high ductility aluminum alloy material and a preparation method thereof, belonging to the technical field of aluminum alloy materials. The aluminum alloy material comprises the following components by mass percentage: Si: 8.50-10.50wt%; Cu: 0.02-0.05wt%; Mn: 0.35-0.60wt%; Mg: 0.01-0.06wt%; Ti: 0.05-0.15wt%; Sr: 0.015-0.025wt%; B: 0.03-0.1wt%; Y: 0.5-1.0wt%; the balance is Al; the content of inevitable impurities is less than 0.05wt%. The invention adds aluminum-copper alloy and aluminum-magnesium alloy, and refines the grain structure of the system with aluminum-titanium alloy, strengthens the grain boundary in the system with aluminum-titanium-boron rod, and enhances the ductility of the finished product; in addition, yttrium, strontium and boron are used for composite modification to synergistically increase the thermal conductivity of the finished product.

The invention relates to the technical field of medical equipment, in particular to a portable acupuncture and massage electromagnetic head therapeutic apparatus which comprises a helmet and further comprises a gradient installation ring, the gradient installation ring gradually expands outwards in a spiral shape from top to bottom, and a plurality of iron cores are fixedly installed at the bottom of the gradient installation ring. The multiple iron cores are spirally distributed along the bottom of the gradient mounting ring, two U-shaped mounting grooves are formed in the bottom of each iron core, and magnet assemblies are arranged in the two mounting grooves respectively. The device has the advantages that the device better fits the irregular shape of the head, a magnetic field uniformly covers the whole head, it is guaranteed that the head receives a balanced magnetic field effect, a magnetic field effect blind area is avoided, the overall treatment effect is improved, the mounting groove guides the magnetic field trend, magnetic field leakage and disordered diffusion are reduced, the magnetic field acts on a treatment area more intensively, and the treatment effect is improved. The utilization efficiency of the magnetic field is improved, more magnetic energy is concentrated on a part needing treatment, the magnetic field intensity of the treatment side is improved, and therefore the treatment effect is enhanced.

The invention relates to high-strength anti-cracking GH3536 alloy powder for additive manufacturing based on niobium-lanthanum synergistic modification and a preparation method thereof, and relates to the technical field of powder for metal additive manufacturing. Niobium is added in the mother alloy smelting stage, lanthanum is excessively added for deep purification, and harmful impurities are removed; then, according to the atomization powder manufacturing process type, the time for adding the lanthanum element for the second time is accurately selected; in the solid electrode atomization process, adding is compensated through vacuum self-consuming remelting in the process of preparing a solid alloy electrode bar; the molten metal atomization process is added after alloy liquid is melted down and before atomization is started. Through step-by-step accurate regulation and control, the lanthanum content in the final powder is in a proper range, the formation of grain boundary continuous brittle carbides is effectively inhibited, the crack resistance is improved, meanwhile, the niobium element generates fine carbides in situ to play the roles of fine grain strengthening and dispersion strengthening, and the tensile strength of the material is improved.

The utility model discloses a vertical type strong solution micro -nano gas dissolving device, including base, the base both sides are equipped with first gas dissolving tank and second gas dissolving tank, first gas dissolving tank with second gas dissolving tank opposite side all are equipped with the air distribution subassembly for the even delivery air to the gas dissolving tank, first gas dissolving tank outer wall one side is connected with equal diameter tee, and the equal diameter tee lower side port is equipped with first water inlet pipe, and the other end of first water inlet pipe is connected with the elbow pipe, and the other end of elbow pipe is worn in first gas dissolving tank inside, to the first gas dissolving tank in -line delivery backflow water and carry out preliminary gas dissolving, the second water inlet pipe is connected between first gas dissolving tank with second gas dissolving tank, makes backflow water enter second gas dissolving tank secondary gas dissolving, and the water outlet pipe is connected with second gas dissolving tank far from second water inlet pipe one side, the utility model discloses, has the characteristics such as gas dissolving and gas dissolving efficiency high.