4results about How to "Prevent mutual attraction" patented technology

This utility model discloses a plate dumbbell, relating to the field of fitness equipment technology. The plate dumbbell consists of a connector, dumbbell plates, and a dumbbell bar. The screw of the connector passes through the dumbbell plates and is inserted into the dumbbell bar. Locking devices are provided on the connecting terminals at both ends of the dumbbell bar. One end of the locking device engages with the screw of the connector to fix the screw, so that the end of the connector and the connecting terminal clamp the dumbbell plates to form the plate dumbbell. When the screw is disengaged from the dumbbell bar, the screw can slide relative to the dumbbell bar, which facilitates quick adjustment of the position of the connector and completes the assembly and disassembly of the dumbbell plates, realizing the rapid assembly of the plate dumbbell. By moving the locking device, the fixing and loosening of the connector can be controlled, thereby completing the assembly and disassembly of the dumbbell plates and adjusting the weight of the plate dumbbell. The locking device in this plate dumbbell has a simple structure and is easy to operate.

This invention belongs to the field of ceramic slurry technology, specifically disclosing an alumina ceramic slurry, its preparation method, and its application. The alumina ceramic slurry comprises the following components by mass percentage: 5-8% acrylic resin composition, 0.1-0.3% dispersant, 8-14% resin solvent, 11-17% solvent, 0.93-1.42% inorganic sintering aid, and 59.28-74.97% alumina. The acrylic resin composition contains polydopamine-modified graphene material, acrylic resin, and ethyltoluenesulfonamide. The alumina ceramic slurry of this invention exhibits excellent stability, uniform dispersion, and casting performance. It does not crack or break during casting and can be matched with existing casting preparation processes. Its stability is 85-95%, its flowability is 120-140s, and its absolute Zeta potential is 30-33mV.

The utility model discloses a magnet steel positioning installation clamp of permanent magnet synchronous motor relates to magnet steel installation technical field. The utility model discloses a mould is provided with a plurality of magnet steel at the top, the upper portion of mould is provided with the rotor, still includes: installation component, installation component sets up inside the mould. The utility model discloses through setting up installation component, specifically is magnet steel is prevented and is adsorbed to the outer surface two -proof adsorption strip of lift column and is blocked, prevents adsorbing to lift column, and the rotor bottom pivot is inserted into the placement groove, and the position is made and prevents the displacement strip alignment positioning block tip, and the rotor pivot is pressed down, and the magnet steel bottom is blocked and fixed when lift column is down, and after falling to the limit position, the rotor bottom is flush with the top of mould, and magnet steel is adsorbed to the outer surface of rotor, and prevents the displacement strip and prevents adjacent magnet steel and each other, and when pulling out the rotor after installation, the distance between the anti -hand -clamping ring and lift column is equal to the thickness of magnet steel, and the excess magnet steel is blocked, and it remains in the positioning groove, and magnet steel is avoided from being injured finger because of magnetic force.

The invention relates to a high-performance vacuum brazing diamond product and a preparation process thereof, the high-performance vacuum brazing diamond product comprises a steel substrate, an adhesive layer, a diamond body, a metal alloy coating and a mixed brazing filler metal layer, and the adhesive layer is one or more of a thermosetting adhesive and a thermoplastic adhesive; the diamond body in the prepared diamond product does not have obvious corrosion marks, so that the surface smoothness of the diamond is effectively protected, the surface corrosion of the high-temperature liquid brazing filler metal to the diamond body is prevented, and the basic special properties of low surface friction coefficient and small abrasion of the diamond body are kept; the friction resistance in the grinding process can be effectively reduced, the grinding efficiency is improved, and the service life of a product is prolonged. By adding the metal alloy coating on the surface of the diamond body, uniform mixing or regular and ordered arrangement with a brazing filler metal layer is facilitated, diamond particles are more uniformly distributed, agglomeration and accumulation are avoided, more diamond particles can effectively participate in the grinding process due to uniform particle distribution, the grinding efficiency is improved, and the service life of the diamond is prolonged. Meanwhile, the problem of stress concentration caused by agglomeration and accumulation is avoided, and the strength and durability of the product are improved.