1197 results about "Square Shape" patented technology

The invention discloses a construction method for an internal bent frame type structure frame body of a wind tunnel flow channel diffusion section. The construction method comprises the steps that P1, structural design is conducted on an inner steel formwork unit and a profile steel structure supporting frame unit; p2, after being machined, the inner steel formwork unit and the profile steel structure supporting frame unit are inspected to be qualified and conveyed to a construction site; p3, on-site positioning and paying-off of all the section sections of the inner steel formwork units are conducted; and P4, positioning installation of the inner steel formwork unit and the profile steel structure supporting frame unit is conducted, before installation, a BIM engineer makes installation animation demonstration through an inner steel formwork BIM model, visual disclosure is conducted on field management personnel and workers, and the workers conduct installation of an inner formwork supporting system according to the sequence of animation demonstration. According to the method, the wind tunnel flow channel diffusion section is gradually changed from a polygonal shape to a square shape in the horizontal direction, the construction problem of an ultra-large wind tunnel circular-to-square diffusion section is effectively solved, an internal mold supporting system meeting the construction precision requirement can be built by applying the method, and smooth construction is guaranteed.

The present invention relates to an adjustable center-mass weight assembly including a plurality of substantially concentric weights engaged by one or more capturing rods which can be extended from or retracted into a rotatable handle. As the handle is rotated in a first direction, the rods extend through consecutive weights to add weight and by rotating the handle in a second direction weight can be removed from the weight package. The weights can come in a variety of shapes but preferably they will be in the shape of cylinders, squares, or hexagons, for example, such that by disposing the handle across a central axis the weight can be centered.

The invention relates to a multistable mechanical metamaterial structure with a tension characteristic, which belongs to the field of mechanical metamaterials and mainly comprises a multistable mechanical metamaterial cell structure, and the multistable mechanical metamaterial cell structure comprises a tension integral structure component, a degree-of-freedom constraint component and a connecting component. Under the action of a tensioning integral structure, when the structure is not subjected to external load, the structure is subjected to interaction of internal stress, and the balance is achieved in a self-stabilization state; according to the multistable mechanical metamaterial cell element structure with the tension characteristic, the structure of the position where each side of the square outline is located has two steady-state configurations, and the cell element structures are connected through a rectangular array to form the multistable mechanical metamaterial structure with the tension characteristic. The tensegrity structure and the mechanical metamaterial structure are combined, the types of existing mechanical metamaterial cell element structures are enriched, and a brand new direction is opened up for design, analysis and application of the tensegrity mechanical metamaterial structure.

A differential feed dual-frequency dual-polarization microstrip filtering antenna comprises three layers of dielectric substrates which are arranged at intervals from top to bottom, and an octagonal annular coupling parasitic structure is loaded on the lower surface of the first layer of dielectric substrate; a rectangular radiation patch is printed on the upper surface of the second dielectric substrate and is loaded with four non-closed rectangular gaps which are distributed in a square shape and are mutually rotationally symmetrical. A cross-shaped parasitic branch knot and four L-shaped symmetrical open-circuit branch knots which are distributed in a rhombus shape and extend outwards along the diagonal direction of the rhombus are printed on the lower surface of the second dielectric substrate layer; the lower surface of the third dielectric substrate is a metal floor; the second layer of dielectric substrate and the third layer of dielectric substrate are connected through a coaxial feeder line; according to the dual-frequency dual-polarization filtering antenna, the mode of combining the differential feed technology and the microstrip antenna is adopted, the design of the dual-frequency dual-polarization filtering antenna with four radiation zero points is achieved, the antenna has good edge selectivity and good out-of-band rejection capacity, in-band gain is stable, and a directional diagram has good symmetry and directionality.

The utility model discloses a distributed breeze power generation cone type steel frame construction operation special platform which comprises a platform frame body, and the platform frame body comprises a fixed pedal, a movable pedal and a supporting mechanism. The fixed pedal is in a square plate shape, an avoiding notch used for avoiding the power generation tower is formed in the center of the fixed pedal, and the avoiding notch is in a square shape. The number of the supporting mechanisms is four, the four supporting mechanisms are fixedly connected to the bottom ends of the four end corner positions of the fixed pedal correspondingly, the length direction of the supporting mechanisms is consistent with the length direction of the diagonal lines of the fixed pedal, and the supporting mechanisms can conduct telescopic extrusion action in the direction of the receding notch. The movable pedals are arranged between the adjacent supporting mechanisms and detachably connected with the adjacent supporting mechanisms. Standing construction operation of different outer diameter areas of the power generation tower can be achieved only through one platform frame body structure, time and labor are saved, and meanwhile the installation and construction efficiency of the power generation tower is improved.

The utility model discloses a rotor punching sheet, comprising a rotor punching sheet body, the surface of the rotor punching sheet body is provided with a plurality of conducting bar groove groups, the number of the conducting bar groove groups is eight, the conducting bar groove groups are distributed on the surface of the rotor punching sheet body in an annular array mode, the center position of the rotor punching sheet body is provided with a center shaft hole, and the center shaft hole is provided with a through hole. A protruding part is arranged on the inner wall of the central shaft hole, the protruding part is in a square shape, chamfers are arranged at the corners of the extending portion of the protruding part, a groove is formed in the connecting position of the protruding part and the central shaft hole, and a fool-proof groove is further formed in the inner wall of the central shaft hole. The inner wall of the central shaft hole is provided with the projection part, the groove and the fool-proof groove, thereby improving the identification degree, providing convenience for the accurate installation of the rotor punching sheet body, effectively preventing the damage of the key and the groove caused by the installation dislocation, and improving the installation firmness of the rotor punching sheet body.

The rapid wiring device comprises a first shell and a second shell, the inner sides of the first shell and the second shell are provided with placing grooves, the placing grooves are arranged in a square shape, the inner sides of the first shell and the second shell are slidably connected with clamping blocks, and the clamping blocks are connected with the first shell and the second shell. A limiting mechanism is arranged at one end of each clamping block, the wires are placed on the inner sides of the first shell and the second shell, the clamping blocks and the extrusion blocks can clamp and fix the wires on the two sides under extrusion of the limiting rings by rotating the threaded rings and the limiting rings on the two sides in the opposite directions, inner cores of the wires on the two sides are tightly attached together, and therefore the wires on the two sides can be clamped and fixed. In addition, the device can complete operation by rotating the limiting rings and the threaded rings on the two sides, the working procedure is single, operation is easy, no special tool is needed, and the device is convenient for workers to use.

The utility model relates to the technical field of air tightness detection devices, and discloses a civil air defense door air tightness detection device which comprises a base, a bottom bin fixedly connected to the base, four hydraulic rods fixedly connected to the inner surface of the base, two supporting plates slidably connected to the bottom of the bottom bin, a placement groove formed in the inner surface of the bottom bin, and a door frame slidably connected to the interior of the placement groove. A containing groove is formed in the side, close to the containing groove, of the bottom bin, the containing groove is evenly formed in a square shape, an air bag is installed in the containing groove, a starting mechanism used for starting the air bag is arranged on the inner surface of the containing groove, a sealing groove is formed in the top of the bottom bin, and a sealing mechanism used for sealing the bottom bin is arranged in the sealing groove. Through the arrangement of the hydraulic rod, the phenomenon that the door plate is inconvenient to take can be avoided, after detection is completed, the hydraulic rod can be started to drive the door frame to move upwards, and the door frame can be completely exposed along with continuous upward movement of the hydraulic rod, so that the phenomenon that the door plate is inconvenient to take is avoided.

A modular structural element (20) which is arranged to be connected to another such element so as to form an assembled structure, wherein the modular structural element is of substantially square outline or of substantially hexagonal or half-hexagonal outline, and the element comprises a principal height dimension and a principle lateral dimension, wherein, a ratio of the two said principal dimensions is no more than 6.

The utility model discloses a bolted assembly type airport pavement structure, which comprises a plurality of adjacent prefabricated concrete upper cover plates and a plurality of prefabricated concrete base plates, the prefabricated concrete upper cover plates and the prefabricated concrete base plates are in bolted connection, each prefabricated concrete upper cover plate comprises an upper cover plate central part and four flange parts, the upper cover plate central part is a cube with the thickness of h, four flange parts with the thickness of h / 2 are arranged on the upper edges of the four side edges of the central part of the upper cover plate and partially extend outwards, the length of the long edge of each flange part is smaller than that of the central part of the upper cover plate, and the adjacent flange parts are not connected with each other; a boss is formed in the middle of the square precast concrete base plate with the thickness of h / 2, and the top face of the boss and the top face of the precast concrete upper cover plate are spliced to form a complete plane. The connecting mode is simple and practical, assembling and disassembling operation is easy and convenient, force transmission performance is excellent, and the stress requirement of an airport pavement structure is completely met.

The invention relates to the technical field of steel structure construction, and particularly discloses a steel structure welding butt joint device for steel structure construction, which comprises a fixing structure, a first supporting structure and a second supporting structure, the fixing structure is detachably clamped on a bearing column or a cross beam of a steel structure, the first supporting structure is detachably arranged on the fixing structure, and the second supporting structure is detachably arranged on the bearing column or the cross beam of the steel structure. The first supporting structures can be located on the front side and the rear side or the left side and the right side of the fixing structure, the first supporting structures are used for bearing and limiting steel structures in butt joint, the second supporting structures are detachably arranged on the fixing structure, and the second supporting structures can be located on the front side and the rear side of the fixing structure. The two sides of one side of the H-shaped steel frame are clamped and locked through the clamping bases, and stable clamping is achieved; meanwhile, steel frames in various shapes such as a rectangular shape, a square shape and a round shape can be clamped, fixed and subjected to bearing butt joint limiting through the clamping and bearing design, and butt joint devices do not need to be independently arranged for the steel frames in different shapes and specifications.

The invention relates to the technical field of processing equipment, and discloses a dicing device which comprises a placing platform, a rotating assembly, a cutter assembly and a lifting assembly, and the placing platform is provided with a placing area. The rotating assembly is suitable for driving the containing platform to rotate by 90 degrees between the first position and the second position. The cutter assembly comprises a plurality of blades which are transversely and sequentially arranged, and the blades are suitable for downward cutting. The lifting assembly is suitable for driving the cutter assembly to ascend and descend between the third position and the fourth position. When the whole material in the tray is cut, the tray is placed in the placing area on the placing platform, and the cutter assembly is lowered to the fourth position through the lifting assembly for first cutting. And after the placement platform is rotated by 90 degrees through the rotating assembly, the cutter assembly is lowered to the fourth position through the lifting assembly for secondary cutting, the two cutting lines are perpendicular, and therefore the materials are cut into square blocks. The whole material can be cut into square blocks only through one-time rotation and two-time cutting, and compared with manual cutting, the cutting efficiency is higher.

The invention discloses a composite material tensile sample reinforcing sheet bonding tool and a bonding method thereof. The bonding tool comprises a clamping plate, an upper top plate and a lower top plate, a plurality of screw holes are formed in the edge and the center of the clamping plate, and square cushion blocks with through holes in the centers are arranged at the positions of the screw holes in the two sides of the clamping plate; a plurality of sample grooves are formed in the clamping plate and penetrate through the clamping plate, and the sample grooves are matched with samples in shape; screw holes are formed in the edges and the centers of the upper top plate and the lower top plate; a plurality of reinforcing sheet grooves are symmetrically distributed in the upper sections and the lower sections of the upper ejection plate and the lower ejection plate along the vertical center line respectively, the reinforcing sheet grooves are matched with the sample grooves, a reverse ejection hole is formed in the center of each reinforcing sheet groove, and a glue overflow hole is formed in the corner of each reinforcing sheet groove. By controlling the position between the sample and the reinforcing sheet, fixing the bonding position between the sample and the reinforcing sheet and adopting pressurized demolding, the reinforcing sheet in the obtained composite material tensile sample is precise in bonding and excellent in bonding performance.

The invention provides a size detection device for glass production and manufacturing, and relates to the technical field of glass size detection. The size detection device for glass production and manufacturing comprises a working table, an adjusting mechanism is arranged in the working table, four positioning plates distributed in a square shape are arranged on the upper surface of the working table, the four positioning plates are concentric with the working table, the adjusting mechanism drives the four positioning plates to synchronously move towards or deviate from the central point, and the adjusting mechanism is arranged on the upper surface of the working table. The side walls of the two oppositely-distributed positioning plates are fixedly connected with a connecting plate, the outer side of the connecting plate is connected with a scale plate, the device further comprises a top plate and a moving mechanism which are located above the workbench, and the left side of the lower surface of the top plate is slidably connected with a downward laser range finder through the moving mechanism. And a detection mechanism is arranged in the middle of the top plate and drives to-be-detected glass to perform rotary detection. Through the adjusting mechanism and the positioning plate, the center point of the glass can be conveniently and accurately found, and then rapid measurement is achieved.

The invention relates to the technical field of nuclear power station welding seam detection, in particular to a measuring device and a measuring method for nuclear power station fillet welding seam nondestructive testing, the measuring device comprises a ruler plate, a sliding ruler and a stepped sliding groove, the main body of the ruler plate is a pentagon formed by cutting one corner of a square, and the inclined edge and the adjacent edge of the pentagon are arranged at 135 degrees; two sides, adjacent to the bevel edge, of the ruler plate are provided with stepped sliding grooves, the two stepped sliding grooves are perpendicular to each other in the same plane, the two stepped sliding grooves are in limited sliding connection with two sliding rulers respectively in the length direction, the opposite ends of the two sliding rulers abut against welding corners on the two sides of a T1 or H1 fillet weld respectively, and a marking line is carved at the outer side end of each sliding ruler. The ruler plate is provided with scales at the edges of the two stepped sliding grooves. The invention provides the measuring device and method for measuring the special fillet weld of the nuclear power station.

The invention relates to the technical field of composite material engineering, and discloses a basalt fiber glass fiber reinforced plastic insulating arm and a preparation process thereof, and an arm body of an insulating plate is prepared by pultrusion and subsequent machining of the following components: 50-75 parts by mass of basalt fiber or fabric thereof; 25-50 parts by mass of an epoxy resin system; the flame retardant comprises 0.5-2 parts by mass of a coupling agent and 1-5 parts by mass of a flame retardant. The arm body is a square tubular object, one end of the arm body is provided with a diagonal plane, five first round through holes distributed in a Z shape are formed in one side wall, close to one end of the diagonal plane, of the arm body, and four second round through holes distributed in a square shape are formed in one side wall of the other end of the arm body. A reinforced framework is constructed by basalt fibers, an epoxy resin matrix is combined, and a pultrusion technology is adopted. The finished insulation arm not only shows the end part bearing capacity of about 1 ton and the high insulation level of 200 kilovolts, but also has the characteristics of excellent chemical corrosion resistance and light weight.

A Zn—Al—Mg-based hot-dip plated steel sheet includes a hot-dip plated layer formed on a surface of a steel sheet, in which the hot-dip plated layer contains, as an average composition, Al: 5 to 22 mass % and Mg: 1.0 to 10 mass %, with a remainder including Zn and impurities, and in a case where a 5 mm square cross section parallel to a surface of the hot-dip plated layer is exposed at any position of a 3t / 4 position, a t / 2 position, and a t / 4 position from the surface with a thickness of the hot-dip plated layer represented by t, a ratio (B / A (%)) of an area fraction B of a [Zn phase] to a total area fraction A of a [Zn phase] and an [Al / MgZn2 / Zn ternary eutectic structure] of a plating microstructure in at least one cross section is 20% or more.

The invention discloses a rhombohedral octahedron mobile robot which comprises first to sixth vertex units and first to twelfth driving units, the first to sixth vertex units are connected through the driving units, in an initial state, each unit is in a square shape, and the whole robot is in a rhombohedral octahedron shape. A surface center driving deformation mode is adopted, deformation of each single-degree-of-freedom quadrilateral unit is achieved by controlling the rotating angle of a steering engine, then overall deformation is achieved, a triangular surface composed of quadrilateral connecting rod units or rod pieces can serve as a support to conduct rolling movement, rich deformation movement modes can be achieved, and the robot can move rapidly through the sphere-like appearance; the gridding structure enables the robot to have high rigidity and environment adaptability, and the robot can be used for unmanned detection tasks in the field environment.

An adjustable Aerolift leg comprising an outer tube, an inner tube, a lock mechanism and an adjustment rail. The inner tube may slidably fit into the outer tube. The inner tube and outer tube may be a square shape, a triangular shape, a circular shape or an eye shape. The shape of the inner tube may or may not depend on the shape of the outer tube. The lock mechanism may be located at an end of the inner tube, between the outer tube and the inner tube. The lock mechanism may lock relative movements therebetween. The adjustment rail may be disposed inside the inner cylindrical tube which may be inside the outer cylinder. The adjustment rail may receive the lock mechanism at one of several positions.

The invention discloses a three-view intercommunication calligraphy practicing method based on golden dot calligraphy practicing lattices. The golden dot calligraphy practicing lattices are combined with the three-view intercommunication method to achieve the calligraphy practicing effect. The golden point calligraphy practicing grid comprises square frame lines, the middle points of the adjacent sides of the square frame lines are connected through dotted lines to form an inscribed square auxiliary frame line, the middle points of the opposite sides of the square frame lines are connected through dotted lines to form a cross-shaped auxiliary line, and a golden section point I is arranged on the upper portion of the vertical line of the cross-shaped auxiliary line. A golden section point II is arranged at the left part of the horizontal line of the cross-shaped auxiliary line; the three-view intercommunication method is divided into three steps and nine steps. According to the three-view intercommunication calligraphy practicing method based on the golden point calligraphy practicing grid, through scientific visual space modeling, sensory collaborative training and a multi-dimensional evaluation system, the structural accuracy, stroke order logicality and line quality of Chinese character writing are improved; the training efficiency is high; the method is suitable for calligraphy education, children enlightenment education and adult hard-tipped pen / soft-tipped pen calligraphy improvement scenes.

The present disclosure is directed toward systems, methods, and non-transitory computer readable media that provide a differentiable tiling system that generates aesthetically plausible, periodic, and tile-able non-square imagery using machine learning and a text-guided, fully automatic generative approach. Namely, given a textual description of the object and a symmetry pattern of the 2D plane, the system produces a textured 2D mesh which visually resembles the textual description, adheres to the geometric rules which ensure it can be used to tile the plane, and contains only the foreground object. Indeed, the disclosed systems generate a plausible textured 2D triangular mesh that visually matches the textual input and optimizes both the texture and the shape of the mesh and satisfy an overlap condition and a tile-able condition. Using the described methods, the differentiable tiling system generates the mesh such that the edges and the vertices align between repeatable instances of the mesh.

A framing system for a construction set comprising a number of interchangeable elements which can be arranged to construct a variety of three-dimensional structures, as well as individual, stand-alone floors, which in turn are adapted to be stacked on one another. In some embodiments, the system comprises at least one central unit, a plurality of outer mid-columns, at least one tie beam corner unit, and / or at least one curved beam unit which cooperate to form a variety of stand-alone floors. The system comprises additional components which increase the stability of the construction set, including but not limited to internal corner brackets, cross pins, cross studs, square panels, and rectangular panels.

The invention relates to the technical field of PCB (printed circuit board) back drilling processing, and discloses a method for measuring board thickness by back drilling in PCB processing, which comprises the following operation steps of: manufacturing an inner-layer circuit and laminating a multilayer board, manufacturing the inner-layer circuit on a PCB, and combining the inner-layer circuit board with materials such as a copper foil and a prepreg into the multilayer board through a laminating process; drilling and thickness measurement preparation: drilling required through holes and back drilling hole positions on the multilayer board, preparing a thickness measurement drawing and a thickness measurement program, dividing square grids on the drawing according to a certain density, marking the positions and diameters of all back drilling holes, through holes and identification holes, and preparing the thickness measurement program corresponding to the drawing. The program contains alignment hole coordinates and grid coordinates and is used for guiding the operation of the automatic thickness measuring equipment. The method for measuring the board thickness through the back drill in the PCB processing aims at achieving program automation, the number of measuring point positions can be flexibly selected according to actual requirements, and the processing efficiency and accuracy are remarkably improved.

The utility model discloses a water body purification ecological floating island, and particularly relates to the technical field of ecological floating islands, the water body purification ecological floating island comprises a planting pot used for planting plants, a floating bed plate is arranged at the outer end of the planting pot, and the cross section of the floating bed plate is in a regular octagon shape; splicing assemblies used for connecting the multiple floating bed plates together are installed on the side edges of the floating bed plates. The splicing assembly comprises eight triangular floating plates, the eight triangular floating plates are movably connected with the eight side edges of the floating bed plate through hinges respectively, and the cross section of each triangular floating plate is in the shape of an equilateral right triangle. According to the utility model, the triangular floating plates at different positions are turned over downwards, so that the single ecological floating bed is square, all the triangular floating plates are turned over downwards, so that the single ecological floating bed is regular octagonal, the shapes and types of the single ecological floating bed are enriched, and the single ecological floating bed provided by the utility model can have different shapes after being spliced.

To provide a transparent three-dimensional maze that can be made without using a mold. [Solution] The three-dimensional maze is made up of squares including U-shaped and L-shaped sections that are created by cutting and bending a transparent plate with vertical and horizontal lines or shallow grooves that form the sides of the grid squares, and includes a box 7 with three sides.

A marking alignment tool in the form of a saddle square is provided. The square has first and second legs that define orthogonal workpiece abutment planes and an alignment point. A continuous angle marking channel is provided through the first leg and extends through a top and bottom surface thereof. The channel provides a plurality of marking channel portions that are radially and angularly offset from one another such that a marking tool can be guided at predetermined angular locations relative to a side of a workpiece to form desired marks thereon.

The utility model discloses a shading fabric which comprises first areas, second areas and a base cloth area, the first areas and the second areas are alternately arranged in the fabric breadth direction, the first areas are connected with the base cloth area, the second areas are connected with the base cloth area, each first area comprises two first convex areas and two first concave areas, and each first convex area comprises two first convex areas and two first concave areas. Each second area comprises two first rectangular areas and two second rectangular areas, the first convex areas and the first concave areas are square, and the first rectangular areas and the second rectangular areas are rectangular. According to the utility model, the two weaves and the plain weaves are connected and interwoven to form the rectangular and square alternate arrangement, so that the structure of the fabric is relatively compact, and the rectangular and square surfaces are concave-convex, so that light rays can be reflected for multiple times at different angles, the path length of the light rays on the surface of the fabric is increased, and the direct penetration of the light rays is reduced; therefore, the shading effect of the fabric is improved.

The invention discloses a method for determining the pile spacing of ultra-deep vibro-replacement gravel piles based on the pile-soil volume replacement rate, which comprises the following steps: before vibro-replacement gravel pile construction, selecting a plurality of representative construction sites in a construction area as ultra-deep vibro-replacement gravel pile construction pile spacing test sites; in each test site, taking a square, and constructing gravel piles for foundation reinforcement at four vertexes of the square to form four gravel piles distributed in a square shape; according to the square area of each test site and the depths of the four gravel piles, the pile-soil volume replacement rate of each test site is calculated; the pile-soil volume replacement rate obtained through calculation of each test site is compared with a pre-designed replacement rate, and the optimal pile-soil volume replacement rate is obtained; and according to the optimal pile-soil volume replacement rate, the pile spacing of the ultra-deep vibro-replacement gravel piles in the construction area is determined, so that the gravel piles are planned and constructed in the construction area according to the determined pile spacing.