Patents
Literature
Patsnap Copilot is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Patsnap Copilot

171results about How to "Lower limit" patented technology

Permanent-magnet type eddy current tuned mass damper

ActiveCN101761146APrecise linear motionStructural damping dropBridge structural detailsTowersStress concentrationElectricity
The invention relates to a permanent-magnet type eddy current tuned mass damper which comprises a steel magnetic-conducting baseplate (10), wherein end plates (3) are respectively arranged at two ends of the baseplate (10). The permanent-magnet type eddy current tuned mass damper is characterized by also comprising a circular shaft (4) and a linear bearing seat (5), wherein two ends of the circular shaft (4) are respectively arranged on the corresponding end plates (3), and the linear bearing seat (5) is sleeved on the circular shaft (4) and can slide on the circular shaft (4); the lower part of the bearing seat (5) is connected with a mass block (6), and two ends of the mass block (6) are respectively connected with the corresponding end plates (3) through spiral springs (7); the lower part of the mass block (6) is connected with a permanent magnet (13), and a copper plate (12) is arranged below the permanent magnet (13) and connected with the baseplate (12) through a cushion block (11). By adopting an eddy current damping model with special design, the permanent-magnet type eddy current tuned mass damper realizes the damping adjustability of the damper in a larger range, realizes the complete separation between the system rigidity and the damper, and cancels the mechanical friction energy consumption and stress concentration elements, thereby avoiding the common TMD damage failure.
Owner:湖南省潇振工程科技有限公司 +1

Transformer

A transformer including a first magnetic core and a second magnetic core having the shape of a flat plate. In the first magnetic core, a middle leg and substantially L-shaped outer legs whose inner sides are formed as circular-arc-shaped surfaces are provided in a standing manner at the central portion and at the comers of a rectangular flat plate, respectively. In addition, in the first magnetic core, a winding accommodating portion is formed between the circular-arc-shaped surfaces of the corresponding outer legs and an outer peripheral surface of the middle leg. Three coil portions, formed by spiral winding operations in level states, are placed upon each other, and are inserted into the winding accommodating portion of the first magnetic core. Then, from above the coil portions, the second magnetic core is placed thereon in order to form an integral structure. At this time, at the side portions of the flat plate, an external line of the flat plate and an external line of the winding accommodating portion coincide with each other. Therefore, the footprint of the transformer becomes small. Accordingly, in the invention, the transformer can be made smaller and thinner as a result of making the dead space that exists during the mounting of the coil to the magnetic core as small as possible.
Owner:MURATA MFG CO LTD

Porous nickel-copper oxide nanowire array enzyme-free glucose sensor electrode on titanium substrate

The invention relates to a porous nickel-copper oxide nanowire array enzyme-free glucose sensor electrode on a titanium substrate. The electrode is of a porous nanowire array structure formed by alternately assembling nickel-copper oxide nanoparticles on the titanium substrate, wherein single nanowire has the top-end diameter of 20+ / -1 nm and the length of 2+ / -0.2 mu m; the nanowires are vertically, uniformly and compactly distributed on the surface of titanium metal so as to form an array; the single nanowire is formed by alternately assembling copper oxide and nickel oxide nanoparticles with particle size of 5+ / -0.2 nm; and nanopores with size of 5+ / -0.2 nm are uniformly distributed in the nanowires. The preparation method comprises the steps of: placing a clean titanium metal sheet in an aqueous solution of copper chloride dihydrate, nickel chloride hexahydrate and urea, sealing and heating in an autoclave with polytetrafluoroethylene inner lining to 120 DEG C and maintaining for 24 hours; naturally cooling, and taking out the titanium metal sheet to obtain a precursor (Ni,Cu)2(OH)2CO3 nanowire array film of an electrode sample; and respectively annealing the precursor sample in air at 350 DEG C and 500 DEG C to obtain the sensor electrode. The obtained electrode can be applied to biological, medical, electronic instruments and other products.
Owner:HUAZHONG NORMAL UNIV

Method of recycling residual alkali from sodium tungstate solution in tungsten smelting

The invention discloses a method of recycling residual alkali from sodium tungstate solution in tungsten smelting, which comprises the steps of: performing liquid-solid separation on mixed material solution discharged from a pressure cooking kettle through a press filter, pumping the filtrate into a three-effect evaporation crystallizer through a pump, firstly preheating the filtrate in a first preheating pipe, then conveying the filtrate into a first-effect evaporation crystallizer, using the secondary vapor generated by first-effect evaporation concentration as a heat source of second-effect evaporation concentration, and conveying sodium tungstate crystals separated out from a second-effect evaporation crystallizer into a plate-and-frame filter press to perform solid-liquid separation; conveying the concentrated solution into a third-effect concentrator, and performing solid-liquid separation on the sodium tungstate crystals separated out from a crystallization kettle of the third-effect evaporation crystallizer; performing solid-liquid separation on the crystals separated out by the second-effect evaporation crystallizer and the third-effect evaporation crystallizer in the plate-and-frame filter press; and conveying the filtrate into a storage tank to return to the pressure cooking procedure to prepare alkali, and discharging the filter residues in a dissolving tank. The method disclosed by the invention is mature in technique and equipment, high in automation degree, high in utilization rate of effective resources, good in energy-saving effect and high in recycled economic benefit, and the method is an important comprehensive recycling component in tungsten smelting.
Owner:ZHONGXIANG TUNGSTEN IND

Electric car battery current limiting protection method and system

The embodiment of the invention discloses an electric car battery current limiting protection method and system. The method comprises the steps that a battery management system collects current status information of a battery in real time, acquires the busbar voltage of the battery and the busbar current of the battery according to the current status information and the optimal charging current limiting value and the optimal discharging current limiting value suitable for the current status of the battery and transmits the busbar voltage of the battery and the busbar current of the battery, the optimal charging current limiting value and the optimal discharging current limiting value to a finished car control unit; a motor control unit collects the current rotational speed and the current busbar current of a motor and transmits the current rotational speed and the current busbar current of the motor to the finished car control unit; the finished car control unit acquires a first required torque satisfying the optimal charging current limiting value and the optimal discharging current limiting value according to the busbar voltage and the busbar current of the battery, the optimal charging current limiting value, the optimal discharging current limiting value and the current rotational speed and the current busbar current of the motor and transmits the first required torque to an MCU; and the torque of the motor is controlled according to the first required torque and is made to operate according to the first required torque.
Owner:SHANDONG YIXING ELECTRIC AUTO CO LTD

Special-specification vertical goods storing warehouse

The invention discloses a special-specification vertical goods storing warehouse which comprises a vertical warehouse body, a lifting device and a cargo carrying tray, wherein the vertical warehouse body, the lifting device and the cargo carrying tray are connected; the vertical warehouse body comprises an upper frame, warehouse body pillars connected with the upper frame, rear connecting beams connected with the warehouse body pillars on the rear side, front guide pillars on the two sides and bottom connecting beams connected with the left and right warehouse body pillars; the tops of the front guide pillars are connected with the upper frame, and a cargo carrying tray support seat is arranged between the two warehouse body pillars on the same side; an upper guide wheel set and a lower guide wheel set are respectively arranged at the upper part and the lower part of each front guide pillar, and the lifting device is connected with the upper guide wheel set and the lower guide wheel set. The special-specification vertical goods storing warehouse is compact in structure and convenient in storage, transportation, loading and unloading, improves the efficiency of loading and unloading cargos, reduces labor intensity, and can meet the goods with special size storage requirements such as plates and bar stocks.
Owner:SHANGDONG TONGLIDA INTELLIGENT MACHINERY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products