Patents
Literature
4results about How to "Achieve barrier" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
Cantilever beam type phononic crystal and parameter optimization method
ActiveCN116129846Bachieve barrierEasy to adjustSound producing devicesCantilevered beamVibration control
The present application belongs to the technical field of ship vibration control structure or method, and particularly relates to a cantilever beam type phononic crystal for vibration isolation and a parameter optimization method. The phononic crystal comprises a power-law prism base, a cross-shaped cantilever beam and a mass block. The power-law prism base comprises a power-law prism part and a base part. The cross-shaped cantilever beam is a cross-shaped flat plate structure, and the mass block is located at the end of the cross-shaped cantilever beam. The cantilever beam type phononic crystal based on the present application can be used for vibration control of different materials and different thicknesses. In actual application, only the material parameters and thickness of the flat plate need to be substituted, and the other part sizes and materials of the cantilever beam type phononic crystal are designed according to the flat plate size and vibration source frequency, so that the band gap frequency range covers the load frequency, and the vibration of the target frequency can be blocked. The structure of the cantilever beam type phononic crystal based on the present application can use materials with different elastic moduli to prepare the cross-shaped cantilever beam and materials with different densities to prepare the mass block, so that the band gap frequency range can be adjusted conveniently and quickly.
Owner:NAVAL UNIV OF ENG PLA
Non-contact combined labyrinth seal structure for gearboxes
ActiveCN115789222Bavoid streamingprevent leakageGear lubrication/coolingWind energy generationRotational axisLabyrinth seal
Owner:NO 703 RES INST OF CHINA SHIPBUILDING IND CORP
Construction safety management fence
ActiveCN224300566UGuaranteed stabilityImprove stabilityFencingBuilding material handlingMechanical engineeringBuilding construction
The utility model provides a kind of construction safety management fence, it includes: pedestal, pedestal surface is attached with bottom plate, bottom plate is fixedly connected with rail plate bottom, and the through-hole for ventilation is set in rail plate middle part, rail plate is fixedly connected with wind baffle, and every wind baffle inner wall is rotatably connected with adjusting plate;Between rail plate, vertical plate is equipped, and vertical plate is fixedly connected with pedestal and ground respectively by stable mechanism.The application installs rail plate using multiple pedestals, realizes the convenient assembly of assembled type, utilizes vertical plate to realize the connection between adjacent rail plate, and cooperates stable mechanism to realize the stable installation of vertical plate, cooperates the overall stability of fence to be ensured with counterweight function pedestal, and the blocking of construction area is realized using wind baffle, simultaneously can realize air circulation, and the rotatable adjusting plate for adjusting the size of air inlet channel is simultaneously set, can be quickly adjusted according to use needs, improve the use performance of fence.
Owner:XINJIANG SHUANGHE CONSTR & INSTALLATION ENG CO LTD
An alternator
The application provides an alternator, which comprises a motor shell, a stator assembly arranged in the motor shell, a rotor assembly arranged in the stator assembly and connected with the motor shell, a rectification assembly arranged on one side of the motor shell, a heat dissipation fan arranged on the other side of the motor shell, and a middle shaft for connecting the rectification assembly, the rotor assembly and the heat dissipation fan, characterized in that the motor shell is symmetrically provided with a rear end cover and a front end cover on both sides, respectively, and a belt transmission wheel is fixedly arranged at one end of the middle shaft and extends to the outside of the front end cover. The filter mechanism is arranged, so that the particulate matter is blocked on the surface of the annular blocking net when the heat dissipation fan rotates to send the external air into the motor shell, and the particulate matter blocked on the annular blocking net does not completely cover and accumulate on the surface due to the annular structure of the annular blocking net, so that the heat dissipation fan can interact with the external air to the maximum extent.
Owner:JIANGSU UNIV YANGZHOU (JIANGDU) NEW ENERGY VEHICLE IND RES INST