83results about How to "Easy modular assembly" patented technology

Polymeric nanoparticles encapsulating inhibitory ribonucleic acids (RNAs) and methods of their manufacture and use are provided. Advantageous properties of the nanoparticles include: 1) high encapsulation efficiency of inhibitory RNAs into the nanoparticles, 2) small size of the nanoparticles that increases cell internalization, and 3) sustained release of encapsulated inhibitory RNAs by the nanoparticles that allows for administration of an effective amount of inhibitory RNAs to cells or tissues over extended periods of time. Encapsulation efficiency of inhibitory RNAs into the nanoparticles is greatly increased by complexing the inhibitory RNAs to polycations prior to encapsulation. Methods of using the polymeric nanoparticles for treating or inhibiting diseases or disorders are provided.

The invention aims to provide an automobile wiring harness protective sleeve convenient for vehicle door wiring harness installation and later period maintenance. The automobile wiring harness protective sleeve comprises a hollow tubular main body (1), tubular fixed parts (2) and (3) are arranged at both ends of the main body (1), an annular groove (21) is arranged on the outer surface of the tubular body of the fixed part (2), and an annular groove (31) is arranged on the inner surface of the tubular body of the fixed part (3). The automobile wiring harness protective sleeve enables the butted point between the vehicle door wiring harness and the main wiring harness in the vehicle body to be transferred to the sheet metal hole from the inside of the vehicle body, thereby greatly simplifying the assembly procedures and facilitating the modular assembly of the vehicle door and the later period maintenance, and the automobile wiring harness protective sleeve has simple structure and low cost and is suitable for being widely popularized.

The invention relates to the fields of marine environment monitoring and optical-fiber sensing technology, and particularly to a marine multi-parameter integrated monitoring system based on a micro-nano optical-fiber half coupler and a method. The monitoring system includes a tunable wavelength scanning light source, an optical-fiber isolator, a 1x4 tunable optical switch, a CTD sensor, a magnetic-field sensor, a humidity sensor ,a harmful-gas sensor, a photodetector No.1, a photodetector No.2, a photodetector No.3, a photodetector No.4, a collection card and a signal processing computer. Thesystem of the invention has the advantages of a simple structure, low costs, high sensitivity, multi-parameter integrated sensing, high integration, convenient deployment, high data compatibility andthe like, and effectively satisfies multi-parameter integrated monitoring and information processing application demand of marine environments. The system is an optical-fiber sensing system, can be convenient for integration with an existing optical-fiber hydrophone system, and then provides a real-time in-situ high-precision marine dynamic environment guarantee.

The invention discloses an assembling and shaping fixture for a vehicle-mounted battery pack system module. The fixture comprises a bearing assembly, a pair of shaping assemblies and fixing assemblies, wherein the bearing assembly comprises a module assembling tray fixed on any fixture platform, and a pair of limiting baffle blocks arranged on the module assembling tray in parallel, and an accommodating area which is used for placing a battery pack is formed between the limiting baffle blocks; the pair of the shaping assemblies is respectively arranged at the two ends, without the limiting baffle blocks, of the accommodating area, and the pair of the shaping assemblies is respectively equipped with shaping pushing plates which can oppositely or reversely move along a direction parallel to the axial direction of the limiting baffle blocks; each fixing assembly comprises a steel belt bundled on the battery pack and a steel belt tightening mechanism connected with the steel belt. According to the invention, the bearing assembly is used for limiting a plurality of battery cells, the shaping assemblies are used for trimming the battery pack, and the fixing assemblies are used for fixing the size and the dimension of the battery pack, so that modularized assembling for the battery cells is conveniently completed with high stability and reliability, and thus, the production efficiency is improved.

The invention discloses a broadband electromagnetic wave absorption super material based on fusion of a foam medium-based material and a metal structure, and belongs to the technical field of electromagnetic wave absorption. The super material is composed of foam materials with different shapes and pore diameters and metal structures with different structural sizes. The combined metamaterial structure utilizes the advantages of light foam materials, large scattering loss, strong interface polarization loss and low impedance, and fully utilizes the flexible and controllable characteristics of the absorbing frequency band of the metal metamaterial structure so that the maximum flat reflectance of the metamaterial in the whole frequency range of 1-18 GHz is reduced to below 10 dB, and the flat panel reflectance of the key frequency band is reduced to below 15 dB, the surface density is less than 8kg/m2, and the super material has a good broadband electromagnetic wave absorption performance. The super material can achieve wide-band radar stealth, can solve the problems of narrow bands, large thickness and high surface density of the absorbing materials in the prior art, and achieves effective electromagnetic wave absorption.

The invention provides a crimp connection type IGBT internal package structure encapsulated in a ceramic tube casing. The structure comprises an IGBT/FRD chip and silicon carbide aluminum layers. Thesilicon carbide aluminum layers are located on the upper and lower sides of the IGBT/FRD chip. A soldering layer is arranged between the IGBT/FRD chip and each of the silicon carbide aluminum layers,and the upper and lower surfaces of the IGBT/FRD chip are provided with metal layers. The invention provides a silicon carbide aluminum-soldering layer-IGBT/FRD chip-welding layer-silicon carbide aluminum internal structure of a ceramic shell packaged crimp connection type IGBT, so the packaging process operation of the ceramic shell packaged crimp connection type IGBT is greatly simplified; double-sided heat dissipation of the crimp connection type IGBT is ensured; and requirement of high current flow and high reliability are met.

The invention provides a ball screw type eddy current damper with a negative-stiffness nonlinear energy trap. The ball screw type eddy current damper comprises an outer frame, a vertically-arranged guide rod, a supporting frame, a mass block, a spring, an alternate permanent magnet set, a conductor plate and an iron plate, wherein a set gap is reserved between the alternate permanent magnet set and the conductor plate. The damper further comprises a vertically-arranged ball screw, a nut, a flywheel and a thrust bearing. The damper further comprises a homonymous permanent magnet set and/ or a synonymous permanent magnet set which can generate the negative-stiffness nonlinear energy trap effect. When vibration energy of a controlled structure is transmitted to the damper, the mass block is caused to vibrate up and down, the homonymous permanent magnet set and/or the synonymous permanent magnet set capture/ captures resonance energy within a wide frequency range, the ball screw drives theflywheel to rotate at a high speed to generate the inertia mass effect, the conductor plate cuts magnetic induction lines of the alternate permanent magnet set, and the eddy current damping effect isformed; and back iron can reduce magnetic flux leakage and improve the damping energy consumption efficiency.

The invention discloses a horizontal spent fuel storage module for a nuclear power plant. A lower-layer structure of the horizontal spent fuel storage module comprises N lower-layer modules which areindependent of one another and are arranged side by side, and an upper-layer structure comprises N-1 upper-layer modules which are arranged side by side and are staggered with the lower-layer modules;main bodies of the upper-layer modules and the lower-layer modules are of hollow cuboid structures; a bottom plate of the upper-layer module clings to a top cover of the lower-layer module; an upper-layer module air inlet is formed in the middle of a bottom plate of the upper-layer module, first meshing plates nested into the upper-layer module air inlet are arranged on the two sides of a top cover of the lower-layer module respectively, a lower-layer module air outlet is formed in the middle of a top cover of the lower-layer module, and second meshing plates nested into the lower-layer module air outlet are arranged on the two sides of the bottom plate of the upper-layer module respectively. A Z-shaped meshing structure is formed between the bottom plate of the upper-layer module and thetop cover of the lower-layer module, and each upper-layer module is meshed and fixed on two adjacent lower-layer modules to form a staggered structure. The horizontal spent fuel storage module has the advantages of being good in stability, easy and convenient to assemble in a modular mode and small in occupied area.

The invention discloses an ultrasonic array interaction method and system fusing visual tactile perception. The method comprises the steps: collecting hand posture information, and calculating fingertip coordinates of a finger to form a position array; for the palm, calculating palm center coordinates and palm surface normal vector parameters to form a vector array; if the finger is detected, selecting to activate the ultrasonic array based on the distance according to the position array; if the palm is detected, starting a motion platform based on directivity selection according to the fingerposition array and the palm vector array, activating a corresponding ultrasonic array after the platform is parallel to the palm, and returning angle information; adopting focus information after homogeneous coordinate transformation to drive a transducer to emit ultrasonic waves to generate a focus point to form tactile feedback, and displaying the focus point, a virtual hand and surrounding scene information in real time, and completing visual tactile fusion perception. Multi-angle different forms of tactile feedback are provided for fingers and palms, the feeling is finer and more vivid, visual perception is fused, the interaction experience is enriched, and the interaction accuracy is improved.

The invention discloses a honeycomb-type vanadium-free denitrification catalyst for reducing the SO2 oxidation rate and a preparation method thereof. The preparation method comprises the following steps that a titanium source precursor is dissolved in acid to form a solution; a tungsten source precursor, a phosphorus source precursor and a magnesium source precursor are respectively dissolved to form a solution; the solutions are evenly mixed, a pH value is regulated to 7-12, precipitation and filtration are performed, then deionized water and a rare earth precursor solution are added, drying and calcination are performed directly after even mixing, and the mixture is grinded into powder; a solution prepared by an extrusion additive and the tungsten source precursor and a pore forming agent are added in the powder, water is added while stirring to form paste, then nano silica, glass fiber and a binder are added and are evenly mixed, and a honeycomb-type blank is extruded out by utilizing an extruding machine; the dried blank is firstly put in a silicon source precursor solution for impregnation, and a finished product is obtained after calcination. The prepared honeycomb-type vanadium-free denitrification catalyst overcomes the defects of active center imbalance and unstable activity of a denitrification catalyst in flue gas in the prior art.

The invention discloses a food processor with low noise. The food processor comprises a machine seat provided with a motor, a stirring cup connected with the machine seat and a grinding cutter arranged in the stirring cup; the upper end of the motor shaft of the motor is connected with the grinding cutter, the machine seat is provided with an air inlet and an air outlet, and the air outlet is located on one side of the lower part of the machine seat; and a heat dissipation air flue communicated with the air inlet is defined by the machine seat, a fan is arranged at the lower end of the motor shaft, a volute communicated with the heat dissipation air flue is arranged at the bottom of the machine seat, the volute is arranged at the periphery of the fan, a ventilation curve is arranged between the volute and the air outlet, wherein the arc length of the ventilation curve is L1, the arc length of the volute is L2, and the value of L1/L2 is higher than or equal to 0.5 and lower than or equal to 2. The food processor can effectively lower the noise, and thereby improving the user experience.

The invention discloses an installing worktable for cabinet bodies. The installing worktable comprises a table top; the upper part of the table top is glidingly provided with a first sliding plate anda second sliding plate; the first sliding plate and the second sliding plate are symmetrically arranged about the center line of the table top; the upper plane of the first sliding plate and the upper plane of the second sliding plate are respectively provided with a fixing plate used for fixing electrical cabinets; the lower part of the table top is symmetrically provided with tool boxes; the side face of each tool box is provided with a push rod; and the lower part of the table top is also connected with support legs with rollers through racks. The worktable is capable of realizing initialinstallation and transfer function of the cabinet bodies, is suitable for the cabinet bodies of various type specifications, and is simple to operate, safe and reliable.

The invention discloses a laminar flow purifying unit for a modular ceiling of a clean room and belongs to the technical field of an operating room air conditioning system. The laminar flow purifyingunit comprises a main case, a refrigerating case, a heating case and a humidifying fresh-air preheating case. A partition layer is arranged inside the main case and divides the inside of the main caseinto an air mixing layer and an air flow equalizing layer; a heating case communicating port and a refrigerating case communicating port are respectively preset in the front side wall and the back side wall of the main case; a humidifying fresh-air preheating case communicating port is preset in the right side wall of the main case; the refrigerating case is communicated with the refrigerating case communicating port, the heating case is communicated with the main case through the heating case communicating port, and the humidifying fresh-air preheating case is communicated with the main casethrough the humidifying fresh-air preheating case. According to the requirement on the level of the clean room, the laminar flow purifying unit realizes air supply, returning, fresh air supply, temperature and humidity regulation, sterilizing,purifying, filtering and silencing of the clean room are achieved.

The invention relates to a magnetic lead screw type eddy current damper with a negative stiffness nonlinear energy trap. The magnetic lead screw type eddy current damper comprises a spring mass system, an inertia mass system, an eddy current damping system, a negative stiffness system and a supporting system. The spring mass system comprises a spring and a balancing weight, the inertia mass systemcomprises a flywheel, a magnetic lead screw nut pair and a magnetic suspension thrust bearing, the eddy current damping system comprises a straight permanent magnet, a conductor plate and back iron,the supporting system comprises a guide rod, a supporting bracket and an outer frame, and the negative stiffness system comprises a synonym permanent magnet group and/or a homonymous permanent magnetgroup. According to the damper, the inerter principle is introduced, physical balance weight is reduced, the mass ratio of the device is increased, and meanwhile the spring net elongation of a low-frequency structure controlled by the device is reduced. The negative stiffness nonlinear energy trap element is introduced, and resonance energy can be captured in a wide frequency range. By adopting the magnetic lead screw nut pair, the friction between a lead screw and a nut is eliminated, and the working efficiency is improved. Meanwhile, the magnetic suspension thrust bearing is used cooperatively to ensure that the flywheel is suspended in a flywheel chamber to work normally.

The invention discloses a plate type low-temperature economizer. The economizer comprises a casing, a convergence box and a plate type heat exchange module; a smoke inlet channel and a smoke discharge channel are arranged at the upper end and the lower end of the casing; the smoke inlet channel comprises an inlet flange and a conical smoke inlet guiding barrel; the smoke discharge channel comprises an outlet flange and a conical smoke discharge guiding barrel; and the plate type heat exchange module comprises multiple heat exchange plates, flue supporting bulges and cold source channel supporting bulges are arranged on two sides of the heat exchange plates, cold source medium baffle runners are formed among the cold source channel supporting bulges of the adjacent heat exchange plates, and comprise multiple circumferential channels provided with independent medium inlets and outlets and pass partition plates arranged in the circumferential channels to enable cold source media to flow in a baffled manner, and discharged smoke once-through channels are formed among the flue supporting bulges of the adjacent heat exchange plates. Flow fields in the economizer are uniformly distributed, the medium contact area is large, the heat exchange efficiency is high, the smoke discharge resistance is small, meanwhile, spaces between the heat exchange plates are easy to clean and maintain, and the capability of the heat exchange plates for bearing pressure differences on the two sides is high.