62results about How to "Meet different design needs" patented technology

The invention discloses a construction technique for ultralow-temperature high-property concrete for railway construction in frigid areas. The construction technique comprises the steps as follows: A, mixing ultralow-temperature high-property concrete: gelled materials, sand, crushed stone, an efficient water reducing agent, compound antifreeze and water are evenly mixed to obtain the ultralow-temperature high-property concrete; the gelled materials are made by evenly mixing cement and mineral admixtures in the weight ratio of (88-78):(12-22); the weight ratio of the compound antifreeze to the mineral admixtures is (3-6):100; the compound antifreeze comprises 30 to 35 wt% of nitrate, 30 to 33 wt% of organic compound, 0.5 to 1wt% of calcium formate, and water as the rest; the nitrate is calcium nitrate or calcium nitrite; and the organic compound is methanol or alcohol; B, pouring the ultralow-temperature high-property concrete; and C, curing the ultralow-temperature high-property concrete. The construction technique has the advantages of reasonable design, simplicity in construction steps, convenience in operation, fast construction progress, low construction cost, and good structural quality of concrete used in construction.

The invention discloses a coloring method, apparatus and device for multiple target areas in a picture, and a storage medium. The method comprises the steps of performing graying processing on a to-be-colored picture to obtain a grayscale picture; selecting a plurality of color standard pictures for performing design of different colors for the to-be-colored picture; coloring the grayscale picturethrough the selected color standard pictures; identifying and segmenting a plurality of colored target areas; and fusing the segmented target areas to the corresponding position of the to-be-coloredpicture. According to the coloring method, apparatus and device, the multiple target areas in the to-be-colored picture are colored through the multiple existing color standard pictures coordinated incolor to change color information of the target areas in the to-be-colored picture, so that a lot of time is saved, the color of the picture are not excessively monotonous, the diversity and flexibility of coloring are realized, and different design requirements are met.

The invention discloses a topological parameter hybrid optimization method for a nonlinear dynamic system structure of a high-speed light load mechanism. According to the method, a linear structure optimization iteration of a standard ESLM (equivalent static loads method) is defined into a single modification, so that a change of an inertial load caused by a structure modification is immediately reflected into an optimization model; a structure with the minimal equivalent load change is obtained; and aiming at a problem that a topological structure tending to 0 or 1 cannot be obtained by the single modification, the standard ESLM is further introduced to obtain a clear topological optimization structure, so that the hybrid optimization of the high-speed light load mechanism on the basis of a single or maximum iteration ESLM is achieved. According to the topological parameter hybrid optimization method, equivalent loads are considered into a function of a design variable; the optimization model is reconstructed; a corresponding determining method is provided; the residual amplitude can be lowered to the maximal extent under the condition of meeting optimization conditions; compared with standard equivalent static loads, the amplitude under the same motion condition can be lowered by a half; the properties of the high-speed light load mechanism are greatly improved; and different design requirements of the high-speed light load mechanism are met.

The invention discloses a method for preparing a thick film silicon nitride waveguide, comprising the steps of: sequentially forming a lower cladding layer and a sacrificial layer on a semiconductor substrate, wherein the height of the sacrificial layer is the same as the thickness of a preset waveguide; photoetching and etching the sacrificial layer to form a core layer groove by using an upper surface of the lower cladding layer as a termination layer, wherein the width of the core layer groove is greater than the width of the preset waveguide; depositing a core layer material in the core layer groove and on the sacrificial layer to form a first core layer; removing the excess first core layer by using a surface planarization process and by using the upper surface of the sacrificial layer as the termination layer; repeating the above step until the thickness of the core layer formed in the core layer groove reaches the thickness of the preset waveguide; removing the sacrificial layerand etching the core layer to form a preset waveguide structure by using the upper surface of the lower cladding layer as the termination layer; and forming an upper cladding layer on the preset waveguide structure on the lower cladding layer. By adopting the scheme, the high stress problem caused by the excess thickness of the thin film is solved, and the shape of the waveguide is optimized to reduce the sidewall roughness.

The invention discloses an ultralow temperature high-performance concrete composite anti-freezing agent and a preparation technology for the ultralow temperature high-performance concrete composite anti-freezing agent. The composite anti-freezing agent comprises the following components in percentage by weight: 30 to 35% of nitrate, 30 to 33% of organic compound, 0.5 to 1% of calcium formate, and the balance of water, wherein the nitrate is calcium nitrate or calcium nitrite, and the organic compound is methanol or ethanol; and the preparation technology comprises the following steps: 1, preheating the nitrate and calcium formate: heating the nitrate and calcium formate to 40 to 70 DEG C, respectively; and 2, uniformly mixing: uniformly mixing the water and the heated nitrate and calcium formate in step 1 based on a design ratio, thus obtaining the composite anti-freezing agent. The preparation technology disclosed by the invention is simple in steps, simple and convenient to operate, has low input cost and a good using effect, and a performance of the ultralow temperature high-performance concrete can be effectively improved.

The invention discloses an optical path rapid-switching device which comprises a lens fixing part, a cam part, an elastic piece, a mounting seat and a motor, wherein the lens fixing part and the cam part are all detachably mounted on the mounting seat; the cam part comprises a cam; a reflective lens is fixed at one end of the lens fixing part, and the other end of the lens fixing part is connected with one end of the elastic piece; a rolling wheel is arranged in the middle of the mounting seat; the rolling wheel is in contact with the circular arc section of the side wall of the cam under the tensioning force action of the elastic piece; when the cam rotates, the lens fixing part drives the reflective lens to rotate back and forth between two different positions, so that the reflection direction of the optical path incident on the reflective lens is changed. The optical path rapid-switching device is stable in operation, can flexibly regulate the angle of incidence of the incident light, can fully replace an oscillating mirror, and can further reduce the cost.

The invention discloses a production process of a metal gear shifting ball head and belongs to the field of gear shifting ball heads. The production process comprises the following steps of die casting, wherein after an aluminum alloy ingot material is molten, a part base material is formed through die casting formation; machining, wherein machining treatment is conducted on the part base materialthrough a CNC process; polishing, wherein mirror polish treatment is conducted on the surface of a part; cleaning, wherein the polished part is cleaned; copper plating, wherein copper plating treatment is conducted on the surface of the part; polishing, wherein high-glossiness polishing treatment is conducted on the surface of the part obtained after copper plating treatment; cleaning, wherein the part obtained after high-glossiness polishing treatment is cleaned; and surface electroplating and spraying process treatment, wherein copper plating, nickel plating and chrome plating are sequentially conducted on the surface of the part, and finally, painting treatment is conducted. According to the production process, the gear shifting ball head is formed by conducting die casting on the aluminum alloy ingot material; after surface copper plating is completed, polishing and electroplating treatment are conducted; wear resistance and temperature resistance of the gear shifting ball head are improved; and in addition, the metal gear shifting ball head is recyclable, and the problem that when a plastic material is adopted, the environment is polluted is avoided.

The invention discloses a dissipation type broadband wave-absorbing FSS structure and a preparation method. A patch type FSS unit structure is formed on a dielectric plate by adopting a carbon film spraying process; the FSS unit structure is a square fractal structure, and square grids are periodically arranged; the square of the fractal structure comprises a #-shaped structural patch in the center and big square patches in the four corners of the square; the end parts of four arms of the #-shaped structural patch are expanded to form a square cross-shaped structure; and small square patches are symmetrically arranged in the square cross-shaped structure. The special FSS structure, by virtue of the surface resistance characteristic, breaks through the fact that the conventional frequency selection surface stop band has the total reflection characteristic; a lossy network which is formed by the capacitor, inductor, resistor and transmission line is introduced, so that the stop band frequency band can be reduced effectively; and therefore, the technical problem that the application of the existing frequency selection surface is limited by the structural appearance is solved.

The invention discloses a novel brush type seal which comprises a steam seal block and a brush seal, wherein a brush seal groove is formed in the steam seal block; the brush seal is fixed in the brush seal groove and comprises two wire brush protecting plates and brush wires arranged between the two wire brush protecting plates; the two wire brush protecting plates are identical in height and are separately lower than the brush wires; a separation blade for preventing the brush wires from being inclined is arranged below the air outlet side of the brush seal groove; and the separation board and the steam seal block form an integrated structure. According to the novel brush type seal disclosed by the invention, in production of the novel brush type seal, a direct type brush seal is first produced, and then is subjected to rolling-bending forming, so that the defects that an existing process is troublesome in production, poor in generality and the like are overcome; the novel brush type seal can be produced on batch, and is effective in inventory and good in generality; the influence of clockwise and counter-clockwise rotation of a rotor on the arraying direction of the brush seal is eliminated, the rejection rate is reduced and an original wire arraying template is discarded; and by adopting an automatic wire winding process, labor intensity is reduced, the uniformity and the precision of arrayed wires are improved, and the production efficiency is greatly improved.

The invention relates to a horizontal negative stiffness device with a vertical damping function. The horizontal negative stiffness device comprises a spherical hinge upper connecting plate, a spherical hinge lower connecting plate, a spherical hinge, an arched spherical face, pre-pressing disc springs, viscous dampers, limiting rods, a bearing base, nuts and inside hexagonal bolts; the spherical hinge upper connecting plate and the spherical hinge lower connecting plate are fixedly connected through the inside hexagonal bolts, and the spherical hinge is embedded into the spherical hinge lower connecting plate for fixation and makes contact with the arched spherical face in a pressure-bearing mode; the upper portions of the pre-pressing disc springs are in welding connection with the arched spherical face, and the lower portions of the pre-pressing disc springs are in welding connection with the bearing base. The viscous dampers are arranged at the internal diameters of the pre-pressing disc springs, the upper portions of the viscous dampers are in welding connection with the arched spherical face, and the lower portions of the viscous dampers are in welding connection with the bearing base. The viscous dampers and the pre-pressing disc springs cooperatively work, and meanwhile negative stiffness and damping force are generated; and the limiting rods are connected with the arched spherical face and the bearing base through the nuts, the pre-pressing states of the disc springs are achieved, and the limiting rods are symmetrically arranged on the two sides of the arched spherical face.

The present disclosure relates to the technical field of seismic design, and provides a method for calculating a seismic bearing capacity of a structural element based on performance levels, including: setting different performance levels based on a maximum interlayer displacement angle of a structure, and calculating top displacements of the structure at different performance levels; according to a mass participation factor of a first mode shape and the top displacements of the structure at different performance levels, determining displacements of the first mode shape; according to the displacements of the first mode shape, obtaining a displacement of an equivalent single-degree-of-freedom system; selecting a plurality of ground motions suitable for a site, obtaining a plurality of seismic influence coefficients of the first mode shape at different performance levels; based on an average peak acceleration of the plurality of ground motions at different performance levels and according to a design response spectrum specified by a seismic code, obtaining a plurality of seismic influence coefficients; synthesizing a seismic action of the structure at different performance levels under the plurality of mode shapes; and calculating the bearing capacity. The seismic bearing capacity of the structural element is calculated based on the performance levels, and thus the seismic design method is more scientific.

The invention relates to the field of electric connectors and provides a USB (Universal Serial Bus) electric connector. The electric connector comprises a plurality of electric connecting units, a connecting mechanism, a positioning piece and a shielding shell, wherein each electric connecting unit comprises a terminal seat and at least two rows of conducting terminals embedded in the terminal seat; the conducting terminals are embedded in the terminal seat in a secondary molding mode, and one end of each conducting terminal is suitable for being connected with a USB plug, while the other endis suitable for being connected with a PCB (Printed Circuit Board); the connecting mechanism is used for connecting and fixing the plurality of electric connecting units; the positioning piece is used for fixing the ends of the conducting terminals connected with the PCB; and the shielding shell is wrapped outside the electric connector units, the connecting mechanism and the positioning piece. The USB electric connector guarantees the stable and good relative positions of the plurality of rows of conducting terminals.

The invention provides a multi-working-platform mobile phone. The multi-working-platform mobile phone comprises a main body and an outer shell, wherein the main body comprises a first working group and a second working group. The first working group comprises four working bodies, the second working group comprises four working bodies, wherein any working body of the first working group is connected with three adjacent working bodies of the second working group through a V-shaped hinge, the outer shell comprises twelve equant-shaped U-shaped elements, each U-shaped element comprises a first face and a second face, a connection piece is arranged at the junction of the first face and the second face, and the U-shaped elements are connected with the V-shaped hinges through the connection pieces. The main body and the outer shell form a sphere structure, two structure states are arranged between the main body and the outer shell, and the two structure states can switch mutually. A designer of the multi-working-platform mobile phone is capable of autonomously designing working platforms according to the need. A foldable outer shell structure is adopted, and the interestingness and the practicability are good.