9results about How to "Reduce transmission efficiency" patented technology

The invention provides a hollow-core-to-hollow or solid-core-to-hollow optical fiber connection jumper wire and a preparation method thereof. The jumper wire comprises a transmission fiber and connectors connected to the two ends of the transmission fiber. The transmission fiber is a hollow-core optical fiber, the connector comprises an optical fiber fixing device and an integrated welding structure fixed in the optical fiber fixing device, the integrated welding structure comprises a transmission fiber, a coating film and a transition fiber which are fixedly connected in sequence, the coating film performs anti-reflection on a set wavelength, the transition fiber is a solid-core optical fiber, and the outer side end of the transition fiber serves as the output end of the connector; and the output ends of different connectors are oppositely arranged so as to realize transmission connection between different jumpers. Pluggable, stable and reliable connection between the hollow-core optical fibers or between the hollow-core optical fibers and the solid-core optical fibers is achieved.

The utility model relates to a multifunctional steam milk bar, including the tubular body, one end connects the steam source, and the other end sets up the blast hole, sleeve, sleeve sets up on the tubular body, the sleeve and the tubular body form the air cavity between, and the sleeve sets up the inflation hole intercommunication air cavity on, around the inflation hole, the surface of sleeve sets up the adjusting cylinder, adjusting sleeve, set up in the adjusting cylinder, adjusting sleeve sets up the air inlet groove A on, the air inlet groove A intercommunication inflation hole, adjusting head, extends into the adjusting cylinder, adjusting head sets up the air inlet groove B on, wherein, the sleeve opening sets up close to the blast hole one end, and the other end of sleeve and tubular body between seal connection, around the axis of rotation adjusting head adjusting head, the air inlet groove A and the air inlet groove B intercommunication or break off, the utility model discloses through the adjusting head on the sleeve, can intercommunication or break off the air inlet groove A and the air inlet groove B, realize the quick switching of multifunctional steam milk bar's work mode, and the switching mode is simple and quick, and the use efficiency of multifunctional steam milk bar is improved.

This invention discloses a three-dimensional angle-resistant wireless charging device and method, belonging to the field of wireless charging technology. The device includes first to sixth transmitting coils and first to third receiving coils. The six transmitting coils form a cubic spatial structure, with the first and second transmitting coils facing each other and serving as the front and back faces of the cubic space; the third and fourth transmitting coils facing each other and serving as the left and right faces of the cubic space; and the fifth and sixth transmitting coils facing each other and serving as the top and bottom faces of the cubic space. The three receiving coils form a sphere located at the center of the cubic space. This invention achieves omnidirectional, dead-angle-free magnetic field energy radiation.

The utility model discloses a ball screw for a braking system, which comprises a thread sleeve and a screw, the thread sleeve and the screw are respectively provided with a threaded channel, a plurality of balls are rotatably arranged in the threaded channels, the thread sleeve is rotatably connected, a reverser is arranged on the thread sleeve corresponding to the positions of the balls, and the reverser is connected with the screw. The threaded sleeve is provided with a flange in the length direction of the lead screw, a connecting spline is arranged on the flange, the lead screw is arranged in a hollow mode to form a connecting through hole, the reverser is provided with a guide groove used for being communicated with an adjacent threaded channel, the position, corresponding to the guide groove, of the reverser is provided with a lubricating window, and a grease storage device is inserted into the lubricating window. The structure is simple, the using effect is guaranteed, meanwhile, the balls are convenient to lubricate, and the good using effect is achieved.

The invention discloses a lithium-loving porous interface functional layer as well as a preparation method and application thereof. The preparation method comprises the following steps: dissolving a binder in a non-polar solvent to form a solution A; adding a lithium-loving porous framework material and an electronic conductor into the solution A through a water bath synthesis method, and stirring and reacting to form a solution B; adding a small amount of ionic conductor into the solution B for multiple times to form a solution C; and coating a current collector with the solution C, and drying to form the lithium-loving porous interface functional layer on the current collector. The invention also discloses a lithium-loving porous interface functional layer prepared by the preparation method, and a lithium negative electrode containing the functional layer. The lithium-loving porous interface functional layer comprises the lithium-loving framework, the hole wall of the lithium-loving framework comprises the electronic conductor, and the hole internally comprises the ionic conductor, so that the infinite volume expansion of lithium can be limited, the lithium ion flow is homogenized, the effective current density on the surface is reduced, and the growth of lithium dendrites is inhibited; and the high-capacity and long-cycle performance of the all-solid-state lithium metal battery is realized.

The invention belongs to the technical field of supercapacitor electrode materials, and relates to an all-solid-state supercapacitor based on a CuCo2O4-PDMT composite electrode and a preparation method thereof.The preparation method comprises the steps that copper nitrate and cobalt nitrate serve as metal sources, and a CuCo2O4 bottom layer is prepared through constant-potential electro-deposition-muffle furnace annealing; 2, 5-dimethylthiophene (DMT) is used as a monomer, a PDMT top layer is prepared through cyclic voltammetry electropolymerization, and a CuCo2O4-PDMT composite electrode is formed; polyethylene glycol (PEG) is used as a gel matrix, lithium perchlorate (LiClO4) is used as an ion source, nano TiO2 is used as a reinforcing agent, and the composite gel electrolyte is prepared through'microwave dissolution-ultraviolet curing '. The composite electrode and the gel electrolyte are assembled into the all-solid-state symmetrical supercapacitor, so that the defects of high electrode electron transmission impedance, low gel electrolyte ion conductivity and insufficient cycling stability of the existing all-solid-state supercapacitor are overcome, and the collaborative construction of the composite electrode conductive network and the gel electrolyte ion channel is realized; and the performance limitation of traditional single component optimization is broken through.

This utility model relates to the field of mechanical engineering, and more particularly to a protection device for a gantry dual-drive synchronous motion system with adjustable margin. The dual-drive synchronous mechanism consists of two transmission mechanisms, each containing a dual-axis motor, lead screw, pulley, and belt, providing power to the crossbeam. The crossbeam moving mechanism includes a crossbeam and a base, with lead screws connected to both ends of the crossbeam. Position sensors are installed on the crossbeam to detect the relative height of the two ends to ensure synchronization. The protection mechanism includes a limiting component and a tensioning component. The tensioning component is used to adjust the tension of the transmission belt, achieving adjustable margin to adapt to different working conditions. The limiting component not only restricts the movement range of the synchronous pulley, but its limiting position is also adjustable, thereby setting the allowable working range margin of the synchronous pulley. This invention ensures the motion synchronization of the gantry system through position sensor feedback and dual margin adjustment, and improves the reliability and adaptability of the system by protecting key components through limiting.

The invention discloses a stirring mill type powder reactor for processing calcium hydroxide with a high specific surface area, and relates to the technical field of calcium hydroxide processing equipment. The reactor comprises a mounting base, a stirring and grinding box and a reaction box are arranged on the mounting base, and a stirring and grinding crushing assembly and a mixing reaction assembly are arranged in the stirring and grinding box; high-activity calcium oxide powder is fed into the reaction box through the feeding box, and an aqueous solution and a dispersing agent which are supplied by the two proportioning boxes are transferred and conveyed to the reaction rotary drum and are matched with the turning plate to realize full reaction; and the reacted material enters the stirring and grinding drum through the blanking pipe, is crushed by the spiral stirring and grinding blade and the grinding tooth block, and is output by the conveying mechanism. An integrated structure is adopted, temperature control, sealing and pulse air supply design is matched, the mixing uniformity and the reaction efficiency are improved, the particle size of powder is refined, preparation of calcium hydroxide with the high specific surface area is assisted, the structure is compact, operation is convenient and fast, and practicability is high.

The utility model discloses an axial tooth thickness gradual change gear and a backlash suppression structure, and belongs to the field of machinery. The tooth thickness of the cylindrical surface characteristic gear is gradually changed, that is, the corresponding tooth thickness on each cross section is different and is monotonically gradually changed. When the two gears are used in a matched mode, the changes of the tooth thicknesses of the cross sections of the two gears are opposite, and the tooth contact backlash can be changed through axial displacement of one gear. Gaps between the teeth can be increased when the teeth are far away from each other, gaps between the teeth can be reduced when the teeth are close to each other, and even zero-gap contact is achieved at proper positions; tooth clearance suppression has three structures, namely an end face gasket increasing and decreasing structure, an end piece abrasion compensation structure and a taper abrasion compensation structure. The continuous high-precision operation of the gear system can be ensured; the device can be widely applied to the mechanical industry.