1753 results about "Square Shape" patented technology

The invention relates to an angular, in particular rectangular, bursting disc (1) made of a sheet metal, with an edge region (11) with which the bursting disc (1) can be attached to an opening of a container or a pipe, and with a central region (12) with which the opening can be sealed up to a bursting pressure, and with predetermined breaking lines along which the bursting disc (1) tears open when the bursting pressure is reached, so that the central region (12) opens completely or partially, wherein the bursting disc (1) has a fold in the edge region (11) which has a first, folded part of the sheet metal and a second part of the sheet metal to which the folded part is parallel or predominantly parallel.

The invention relates to the technical field of plate welding, and discloses a welding clamp for metal plates and a using method thereof.The welding clamp comprises a support, a mounting plate is fixedly connected to the top of the support, two electric telescopic rods are fixedly connected to the inner wall of the mounting plate, and before use, two plates needing to be welded are placed on the tops of balls; power sources of electric telescopic rods at the two ends are switched on, the electric telescopic rods at the two ends drive the corresponding pushing plates and the plates to move towards the center of the mounting plate, first gears rotate in a meshed mode along the outer walls of supporting rods, the first gears drive rolling wheels to rotate clockwise through second gears, and the plates placed at the tops of balls are pushed by the two rolling wheels to move towards the center of the mounting plate; and displacement is generated under supporting of the balls, one end of each plate is forced to be attached to the side face of the pushing plate, the welding faces of the two plates are kept in smooth butt joint under the influence that the appearance of the plates is square, and automatic adjustment of the equipment angle is achieved.

The utility model relates to a cross-shaped three-dimensional force touch sensor. The sensor comprises a contact, a base and four sensing units, the square base comprises a platform and a PCB (Printed Circuit Board); wherein a square groove is formed in the middle of the upper surface of the platform; the PCB is in a frame shape and covers the outer edge of the square groove. The structure of each sensing unit is composed of a TMR element, a vertical plate, a square permanent magnet and an iron gallium wire; the vertical plate is fixed in the middle of the inner wall of the square groove, and the TMR element is attached to the outer wall of the vertical plate; one end of the iron gallium wire passes through the through hole and is connected with the TMR element, and the other end is inserted into a circular hole of a pillar 4 of the contact. The four iron gallium wires of the four sensing units are jointly inserted into the four round holes of the contact pillar 4 to form a cross structure. The sensor provided by the utility model has the advantages of small overall size, high sensitivity and strong stability, and also shows good dynamic performance, and has short response time and recovery time.

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.

This disclosure relates generally to a novel form of racing course designed for combat-enabled racing drones for entertainment purposes. The racing course consists of multiple modules designed in multiple thicknesses, colors, and shapes including but not limited to circles, squares, triangles, cubes, double-stacked squares, pentagons, and diamonds. These racing modules can be inflated with an air pump and can be arranged as per the player's choice wherein to start the user connects velcro LED light strips, connect to the battery bank, and places the battery bank in the integrated pocket. After that race timer is initiated to start the racing competition.

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 cold formed beam formed from a single sheet of steel having an upper member and a lower member (e.g., square, rectangular, other shape) separated by a web. The web may include stamped apertures and / or embossments around at least a portion of the stamped apertures. The cold formed beam may include beam connections that operatively couple the ends of the steel sheet used to form the beam to a portion of the beam (e.g., the web). The beam connections may by interference connectors formed from deformation of two or more layers of beam (e.g., clinching, or the like). Among other benefits, forming the cold formed beam from a single sheet, stamping of the web, and / or the using deformation connections (e.g., clinching, or the like) of the ends of the sheet allows for the pre-coating (e.g., galvanized, painting, or the like) of the sheet before the forming.

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 invention discloses a motion suppression floating type wind power foundation structure based on a liquid damping effect. The motion suppression floating type wind power foundation structure comprises a floating ball, a connecting rod, an inclined strut and a damper base. The four floating balls are arranged in a square shape, the floating balls are connected through the connecting rods, the damper base is located on the central axis of the square defined by the four floating balls and located below the floating balls, and each floating ball is connected with the damper base through the corresponding inclined strut. The damper base is provided with a mounting seat for mounting a fan tower; a hollow channel is formed in the inclined strut; a crossed partition plate is arranged in the damper base and divides the interior of the damper base into four spaces with the same volume, a damping hole is formed in the partition plate between every two adjacent spaces, and each space is correspondingly communicated with the hollow channel of one inclined strut; and liquid is filled in the damper base and the hollow channel of the inclined strut. When the floating type foundation shakes, the liquid damping system can play a good role in damping force.

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 invention belongs to the technical field of agriculture, and particularly relates to a novel driving and steering system which comprises a supporting mechanism, the supporting mechanism comprises fixing plates which are symmetrically arranged in a square shape, the surface of each fixing plate is fixedly connected with a sleeve, a supporting rod is arranged between the two sleeves, and the supporting rod is fixedly connected with the fixing plates. The two ends of the supporting rod are connected with the inner wall of the sleeve in a sliding mode. According to the novel driving and steering system, by arranging the driving component, when the novel driving and steering system encounters obstacles with different heights, the overall height of equipment can be adjusted through extension or contraction of the electric telescopic rod so that the equipment can better cross the obstacles, meanwhile, the height adjustment of the equipment can be completed within a short time through the quick response characteristic of the electric telescopic rod, and the practicability is high. The working efficiency of the equipment is improved, when the electric telescopic rod is kept at a specific position, the electromagnetic brake can rapidly brake, and the stability of the equipment is ensured through cooperation with the electric telescopic rod.

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 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.

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 discloses a porous metamaterial energy absorption device based on a paper folding and cutting forming process, which is prepared by adopting the paper folding and cutting forming process and comprises tetrakaidecahedron units which are arranged in a staggered manner, each tetrakaidecahedron unit comprises two square surfaces, four upper regular hexagonal surfaces and four lower regular hexagonal surfaces, wherein the two square surfaces are oppositely arranged up and down; the four upper regular hexagonal surfaces share the same edge with the upper square surfaces and are obliquely arranged downwards; the four lower regular hexagonal surfaces share the same edge with the lower square surfaces and are obliquely arranged upwards; and the four square hollow surfaces are formed after the upper regular hexagonal surfaces and the lower regular hexagonal surfaces are in butt joint. By utilizing the characteristic of flexible design of a paper folding and cutting technology, the preparation of converting a three-dimensional structure into a two-dimensional plane structure is more beneficial to precision control, the cost is greatly reduced, and meanwhile, the precision control is improved; by analyzing a deformation mechanism and deducing a function relational expression between structural energy absorption efficiency and structural parameters, structural optimization design with a controllable energy absorption effect is achieved, and the porous metamaterial energy absorption device meeting different requirements is obtained.

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 utility model discloses a geometric figure motion trail display device, which relates to the technical field of math teaching aids and comprises a vertical plate, a transverse plate is fixedly mounted on the lower side of the vertical plate, a first supporting column and a second supporting column are fixedly mounted on two sides of the transverse plate, notches are arranged on the upper sides of the first supporting column and the second supporting column, and racks and clamping grooves are placed in the notches. The clamping groove is located on the upper side of the rack, the interior of the clamping groove is of a hollow structure, a sliding groove is further formed in the clamping groove, a center rod is arranged in the sliding groove in a matched mode, the diameter of the center rod is the same as that of the sliding groove, the center rod can rotate and slide in the sliding groove, and a polygonal plate is installed on the center rod and can be in the shape of a regular triangle, a square, a regular pentagon, a regular hexagon and the like. According to the technical scheme, the rotating center rod can drive the polygonal plate to rotate, the motion state is clearly displayed, and observation is facilitated; the movement track of the polygonal plate can be recorded on paper through a pen, and recording and contrast learning are facilitated.

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.