195 results about "Arcuate shape" patented technology

The invention discloses a T-shaped composite material stiffened wallboard co-curing forming mold and a forming method, in a wallboard forming mold in the forming mold, the forming molded surface of the upper end face of a mold frame is consistent with the outer molded surface of a skin of a stiffened wallboard and is used for paving and forming a combination of a skin blank and a T-shaped stringer blank on the skin blank; and co-curing and forming the stiffened wall plate. The T-shaped stringer blanks are arranged on the skin blank in an inverted mode at intervals; an edge cleaning strip is placed on the end face of a web of each uncured T-shaped stringer blank, the two sides of each T-shaped stringer blank are each provided with an L-shaped core mold, the upper portions of the L-shaped core molds are arranged on the two sides of the corresponding edge cleaning strip in a clamped mode, a soft mold is placed between every two adjacent T-shaped stringer blanks, and all the soft molds are placed on uncured skin blanks; and the outer sides of the L-shaped core molds on the two sides of the T-shaped stringer blank are clamped and fixed through a bow-shaped clamp. According to the method, the problem that the quality of the stiffened wall plate is difficult to meet the product requirement to different degrees due to the existing co-curing stiffened wall plate mode is solved.

The invention belongs to the technical field of PCB detection, particularly relates to a PCB ceramic substrate appearance laser measuring instrument, and aims to solve the problem that tiny cracks hidden on a substrate are difficult to find when the substrate is not stressed in the actual detection process, the following scheme is provided: the PCB ceramic substrate appearance laser measuring instrument comprises a counterweight seat, support rods are fixed on the upper surface of the counterweight seat close to four corners, and the support rods are fixed on the upper surface of the counterweight seat; the top ends of the four supporting rods are fixedly provided with the same workbench, the middle of the workbench is rotationally connected with a vertical supporting pipe, the top end of the supporting pipe is fixedly provided with an arch-shaped supporting plate, and the two ends of the arch-shaped supporting plate are provided with bearing modules which are of the same structure and are symmetrical to each other respectively. According to the invention, the ceramic plate body can be extruded before surface defect detection, so that the residual stress of the ceramic plate body can be amplified to a certain extent, some potential surface micro-defects are forced to be amplified, a laser probe can find the surface micro-defects more easily, and potential quality defects of the ceramic plate body can be detected.

A box magazine fed firearm includes pinch tabs in the receiver of the firearm. In one embodiment, the pinch tabs are opposing pieces of spring steel extending upwardly and inwardly from opposing lateral sides of the receiver. In one embodiment, the pinch tabs are sections of flat spring steel bent into an arcuate shape and secured to the receiver by screws. In one embodiment, tension screws are used to adjust an inward bias of each of the pinch tabs.

A lumbar interbody fusion device includes a first wing, a second wing, and a bridge. The bridge has an arcuate resting shape and include a first end connected to the first wing, a second end connected to the second wing, and at least one aperture extending through the bridge in a radial direction relative to the arcuate resting shape of the bridge. The bridge is elastically deformable such that a distance between the first wing and the second wing may vary according to elastic deformation of the bridge.

The utility model relates to the technical field of teaching equipment, in particular to Chinese pinyin teaching equipment which comprises a showing stand, the middle of the showing stand is in a grid shape and forms a plurality of storage spaces, syllable blocks are clamped in the storage spaces, and a sliding frame capable of sliding up and down is arranged in front of the showing stand. The display rack has the advantages that the middle of the display rack is in the grid shape to form a plurality of storage spaces, the syllable blocks are placed in the storage spaces, the arch-shaped elastic plates are fixedly connected to the two sides of the outer surfaces of the syllable blocks, the syllable blocks can be fixedly installed in the storage spaces through bending of the arch-shaped elastic plates, and installation and disassembly are convenient. The front of the showing stand is connected with the sliding frame in a sliding mode, the sliding frame is a rectangular frame, the syllable blocks can also be clamped in the sliding frame, a teacher can conveniently combine and identify different syllables, the sliding frame can shield other syllables, and interference to the identification process of children is avoided.

The present application belongs to the technical field of part processing, and relates to a fork head arc surface grinding device and method for a shift fork type part. The device comprises a mounting bracket, a pressing center, an adjusting center and an arc-shaped bracket. The pressing center and the adjusting center are coaxially arranged on the mounting bracket from top to bottom. The arc-shaped bracket is arranged between the pressing center and the adjusting center. The upper end surface of the arc-shaped bracket is in contact with the pressing center, and the lower end surface of the arc-shaped bracket is in contact with the adjusting center. The arc-shaped bracket rotates around the axial direction of the pressing center. The present application provides a fork head arc surface grinding device and method for a shift fork type part, which has stable processing quality, high efficiency, low cost, convenient processing operation and strong adaptability.

This utility model relates to the field of dustproof technology, and provides a dustproof structure for the driven wheel of a packaging clamping and shaping machine. It includes a dustproof cover sleeved on a rotating shaft, which mates with the arc-shaped sealing surfaces at both ends of the rotating shaft. Sealing oil is filled between the dustproof cover and the rotating shaft. Annular grooves for storing the sealing oil are formed on both the arc-shaped sealing surfaces of the dustproof cover and the rotating shaft. Through this dual design of the arc-shaped sealing surface mating and the sealing oil filling the annular grooves, comprehensive protection of the rotating shaft is achieved, effectively reducing the risk of jamming or wear caused by dust intrusion, extending the service life of the rotating shaft, reducing downtime maintenance frequency, and ensuring continuous and stable operation of the production line.

The invention belongs to the technical field of cable manufacturing, and particularly relates to a novel pressure-bearing power cable which comprises wires, an insulating material, a filler and an outer sheath, the wires are molded line structures made of annealed soft copper wires, the wires are wrapped by the insulating material, a plurality of wires wrapped by the insulating material are gathered into a whole, and the outer sheath is sleeved with the filler. The insulating material wraps the insulating material, the insulating material wraps the insulating material, the insulating material wraps the insulating material, the insulating material wraps the insulating material, the insulating material wraps the insulating material, the insulating material wraps the insulating material, the insulating material wraps the insulating material, the insulating material wraps the insulating material, the insulating material wraps the insulating material, and the insulating material wraps the insulating material. The lead, the insulating material and the filler are all positioned in the middle of the arch; the power cable can bear materials such as vehicles to pass through the surface by means of the special structure of the power cable, and has the advantages of being waterproof and not prone to breakage.

The utility model discloses a dismounting device for a large-diameter bolt in a narrow space, which is characterized in that in a bolt push-out assembly, a pressure transmission module is fixedly arranged on the inner side end face of one side plate of a bow-shaped clamp, and the other side plate of the bow-shaped clamp is in threaded connection with a hexagon bolt through a threaded hole in the middle; the groove-shaped cavity of the cushion block is arranged on the bolt head of the product bolt in a sleeving mode, the threaded end of the product bolt makes contact with the sensing end of the pressure transmission module, the hexagon bolt is screwed to enable pressure to act on the top end of the cushion block, counter-acting force acts on the threaded end of the product bolt through the pressure transmission module, and the product bolt is pushed out. The bolt head generates the displacement of being pushed out in the groove-shaped cavity of the cushion block; the bolt pulling-out assembly is arranged on the bolt head of the product bolt in a sleeving mode through the concave clamping groove in the end, and pulling-out force is applied to the product bolt through the concave clamping groove so that the product bolt can be pulled out of the machine body structure. The utility model solves the problem that the surface and the hole wall of the bolt are damaged due to local deformation of the butt-joint bolt easily caused by the traditional dismounting mode of the bolt.

This invention discloses a pressure and airtightness test fixture for a rectifier support casing and its usage method. The test fixture includes a base plate and a cover plate connected to the upper space of the base plate via Class B equal-length double-ended studs. A first sealing ring and a second sealing ring are respectively fitted on the base plate and the cover plate. Several screw holes are provided on the cover plate. A first pressure plate and a second pressure plate are fixed between the base plate and the cover plate by an arc-shaped bracket and C-type hexagonal head clamping screws. A first sealing gasket and a second sealing gasket are respectively fitted on the first pressure plate and the second pressure plate, and an adapter is connected to the first pressure plate. This fixture enables pressure and airtightness testing of the entire weld seam of a part, solving the prominent problem of slow efficiency in testing weld seams of individual plates, and improving the quality of pressure and airtightness testing and the efficiency of part processing.

The invention discloses a multifunctional operating handle of a power distribution switch. The multifunctional operating handle comprises a crank and a plurality of operating joints, the crank comprises an arch-shaped transmission rod, a handle and a connecting piece, the connecting piece is arranged at the first end of the arch-shaped transmission rod, the handle is arranged at the second end of the arch-shaped transmission rod, the operation connector comprises an operation part and a connecting part, the connecting part is detachably connected with the connecting piece, and the operation part comprises two operation heads. The multifunctional operating handle of the power distribution switch has the advantages that the handle adapts to various types of operating joints, and the operating efficiency is high.

The invention relates to the technical field of poultry farming, and discloses a goose massage semen collection device and a using method, the goose massage semen collection device comprises a fixing table, an arc-shaped concave part is arranged on the fixing table, and an arc-shaped outer frame is fixed on the outer side of the fixing table; the shading head and neck fixing pipe is fixed to the fixing table and located on the left side of the arc-shaped concave part, the shading head and neck fixing pipe is used for constraining the head and neck of the male goose so as to reduce the stress response of the male goose, the arch-shaped climbers are located on the fixing table and located on the front side and the rear side of the arc-shaped concave part, and constraining pieces for fixing goose limbs are installed on the arch-shaped climbers; the nervous mood of the male goose is reduced through the shading head and neck fixing pipe, meanwhile, the stimulation process in the natural mating environment is simulated through the back massage mechanism, the stimulation effect of sexual reflex is improved, meanwhile, the designed cloaca bionic mechanism can be accurately in butt joint with a semen discharge opening, and the sexual reflex effect is improved. Semen discharge is further promoted through the alternate inflation and deflation function of the pinching and pressing air bag, and therefore the semen collection quality and quantity are guaranteed.

The invention belongs to the technical field of grinding wheel dressing machining, and provides a large-range spherical arc grinding wheel dressing device. The trimming device comprises a diamond pen and a rotating arm, the rotating arm is in an arch shape, a first through hole perpendicular to the extending direction of the rotating arm is formed in the middle of the arch shape of the rotating arm, the two ends of the arch shape of the rotating arm are located on the same vertical straight line, and the trimming device further comprises a positioning device with one end for fixing the diamond pen. The end, away from the diamond pen, of the positioning device can adjust the relative position of the diamond pen and the swing axis of the rotating arm. Through the arrangement, the feeding amount of the diamond pen can be adjusted in a large range, large-range curvature radius dressing is achieved, and the adaptability of the grinding wheel dressing device is improved; cutting force can be monitored in real time, and the abrasion state of the diamond pen is indirectly judged; the feeding precision of the diamond pen is improved, and stepless adjustment of the relative positions of the diamond pen and the swing axis of the rotating arm is achieved.

The application discloses a restraining module for preventing arch deformation in a bidirectional stretching process and a bidirectional stretching device, and the restraining module comprises a fixed frame, a power source is installed on the fixed frame, the power source drives the arc surface of an arc roller to rotate, the arc roller can be adjusted to form different arc heights, two sets of expander rollers are arranged on the two sides of the fixed frame, the two sets of expander rollers are located downstream of the arc roller, the two sets of expander rollers have initial angles which are perpendicular to the length of the film, and the two sets of expander rollers can be unfolded and form different unfolding angles relative to the initial angles. The arc height of the arc roller is dynamically adjusted to change the travel of the film along the conveying direction when the film is stretched in the transverse direction, and the unfolding angle of the two sets of expander rollers is dynamically adjusted to generate a forward oblique pulling force on the film, which can effectively offset the arch deformation of the film, reduce the orientation anisotropy of the film at different positions, make the mechanical properties and thermal shrinkage rate of the film uniform, and improve the surface flatness and thickness uniformity.

To realize a structure having a non-linear cylindrical hole inside by using a mold.SOLUTION: A mold comprises a fixed mold and a movable mold. The movable mold has an arcuate shape and a slide core that is movable in an arcuate manner. The slide core is integrally formed with an arcuate rod-shaped member.SELECTED DRAWING: Figure 3

The application relates to a stress-preventing processing tool for an insert piece casting, which comprises a base, a support table, a special block, a clamping unit and a height limiting unit, the special block is detachably installed above the support table, the clamping unit is arranged on the two sides of the special block, the clamping unit comprises a base, an arcuate frame, a first telescopic spring and a pressing block, a T-shaped groove is arranged above the arcuate frame, a limiting block is arranged in the T-shaped groove, and the two ends of the first telescopic spring are fixedly connected with the base and the limiting block, the height limiting unit comprises an L-shaped support, a telescopic rod, a pressing rod and a locking nut, a T-shaped sliding rail is arranged in the L-shaped support, and the telescopic rod is matched with the T-shaped sliding rail. The special block is used for fixing the insert piece, the clamping units on the two sides are used for pressing the whole insert piece, the insert piece is prevented from being deformed, the height limiting unit is used for reinforcing the clamping units and detecting the height change of the pressing rod, and the effect is excellent.

The application discloses a detection device of a wave energy device and belongs to the technical field of marine device detection devices. The device comprises a horizontal cross beam, an arc-shaped guide rail and a suspension mechanism. The horizontal cross beam and the arc-shaped guide rail form an arc-shaped structure. The suspension mechanism is slidably connected with the arc-shaped guide rail. One end of the horizontal cross beam is provided with a first lifting ring, and the other end of the horizontal cross beam is provided with at least three second lifting rings along the length direction of the horizontal cross beam. When lifting, the lifting speed of the two ends of the horizontal cross beam is changed to generate a speed difference in the vertical direction, then the horizontal movement is generated through the transverse sliding of the suspension mechanism, and the random motion track is generated through the mutual composition of multiple movements, so that the motion state of the sea wave can be more truly simulated. The application effectively solves the problems that the existing detection device has a single fitted motion track and cannot restore the actual working environment, so that the detected data is distorted and has low reference value.

The embodiment of the utility model provides a belt conveyor head part. The belt conveyor head part comprises a first stand column, a second stand column and a third stand column which are arranged at intervals. The first bottom plate and the second bottom plate are respectively used for connecting the adjacent stand columns; the first electric roller is vertically installed on the side face of the second stand column, a brake disc is installed on the first electric roller, and a brake is installed on the portion, located on one side of the first electric roller, of the first bottom plate; the second electric roller is horizontally mounted on the second bottom plate through a roller frame with an arch-shaped opening; the bottom of the unloading upper frame is connected with the tops of the three stand columns, and one end, extending out of the outer side of the first stand column, of the unloading upper frame is provided with an unloading roller; the machine head carrier roller sets are arranged on the unloading upper frame at intervals. A horizontal and vertical roller mounting mode is adopted, mounting space is provided for the brake disc and the brake, dropped coal accumulation below the rollers is cleaned through the arch-shaped openings, the overall structure is compact, strength is high, stability and transmission efficiency are both considered, and the device is suitable for the field of belt conveying equipment.

This invention belongs to the technical field of band saws, specifically relating to a metal band saw. It includes a worktable and a hydraulic lifting rod fixedly mounted on the worktable. A saw frame is fixedly mounted on the hydraulic lifting rod. The saw frame has a driving wheel and a driven wheel, with a saw band positioned between them. A sliding component is slidably mounted on the saw frame, and an arc-shaped plate connects the saw frame and the sliding component. A guide component is mounted on the arc-shaped plate. For adjusting the saw band tension, an adjustment mechanism works in conjunction with a shaft frame. The position of the driven wheel is adjusted via a handwheel and a lead screw to ensure the saw band maintains appropriate tension. Regarding the adjustment of the cutting angle, a rotating mechanism is linked to an arc-shaped rack. After adjusting the handwheel position, the handwheel drives the various components, allowing the sliding component to move flexibly. A worm gear self-locking mechanism ensures the sliding frame's position is fixed. Furthermore, the arc-shaped plate deflects with the sliding frame, ensuring the guide component always clamps the saw band, guaranteeing stable cutting.

The present invention is a toilet paper adapter device designed to stabilize toilet paper and paper towel rolls on non-spring-loaded holders. The adapter includes a pair of arcuate members forming symmetrical halves, each member is equipped with at least two restrictors to provide frictional resistance against the interior surface of a paper roll core. A spring is connected to each restrictor, enabling flexibility and adaptability to different roll diameters. Adjustable screws are provided on each arcuate member to modify the spacing between the arcuate members, thereby modifying a diameter of the paper adapter device to accommodate varying diameters of paper holder arms. In another embodiment, a central tubular spacer aligns the arcuate members and facilitates mounting on a free-standing holder. The adapter is versatile, easy to use, and compatible with existing holder systems and offers a secure and efficient paper roll stabilization solution.

The present invention relates to a front body reinforcement structure provided to improve a frontal collision response performance of a vehicle. The front body reinforcement structure includes front side members provided at left and right sides of a front body to extend in a front-rear direction of the body. A cross member is installed to be connected between the front side members at the left and right sides, the cross member having a shape curved in an arc shape. Further, support brackets are installed to be connected between left and right side portions of the cross member and the front side members to support the cross member at each of the front side members.

A ball-guided retainer for a ball bearing is provided with at least one annular part and a plurality of column parts which have the radial width of the annular part and are provided upright from the annular part in the axial direction. The plurality of pillar portions are disposed at positions that are divided into pocket portions at equal intervals in the circumferential direction of the annular portion. The surface of the pillar section facing the pocket section has a plane parallel to the axial direction or an axial cylindrical surface parallel to the axial direction. The surface of the annular portion facing the pocket portion is a concave curved surface having a partially arcuate shape in the circumferential direction, and the shape of the axial cross-section is equal over the entire circumferential direction.

The utility model discloses an undercarriage and an aircraft, and relates to the technical field of equipment. The frame body is used for being installed at the bottom of the aircraft, the frame body comprises an arch-shaped beam used for being connected with the aircraft and skid pipes connected with the two ends of the arch-shaped beam, the skid pipes are used for making contact with a supporting face, and a boosting assembly is arranged on the frame body and used for applying thrust in the direction opposite to the descending direction of the aircraft so as to reduce the descending speed of the aircraft. According to the undercarriage provided by the invention, the boosting assembly is arranged on the frame body of the undercarriage, and the thrust can be applied in the direction opposite to the descending direction of the aircraft through the boosting assembly, so that the descending speed of the aircraft is reduced, and the risk that the aircraft is damaged when falling to the ground can be reduced.

A portable misting fan including a body having interconnected upper and lower sections thereby circumferentially defining a passageway with respective open ends therebetween, said upper section comprising an arcuate internal reservoir therein, said internal reservoir having an inlet and at least one outlet, a fan assembly arranged at least partially within said passageway, a sonic disk in communication with said at least one outlet and positioned in front of said fan assembly, and a mounting arm pivotably connected to said body about an axis perpendicularly arranged with respect to said open ends of said passageway, where the sonic disk assembly is designed to selectably atomize and disperse water—the water communicated from the internal reservoir—from the sonic disk assembly in a continuous or intermittent manner.

The invention discloses an arch-shaped switching structure and a gas compressor which are used for being connected with an inner casing and an outer casing correspondingly. Comprising a first axial part, a first radial part, a second axial part and a second radial part, wherein the first axial part is formed by extending in the first direction in the axial direction; the first radial part is formed by extending the first end of the first axial part outwards in the radial direction; the second axial part is formed by extending the outer end of the first radial part towards the second direction in the axial direction; the first radial part is used for being connected with the inner casing in the axial direction through a fastener and abutting against the outer side wall of the inner casing in the radial direction, and the second radial part is used for being connected with the outer side wall of the inner casing in the radial direction. The third axial part is used for being in radial abutting connection with the inner wall face of the outer casing, the third radial part is used for being connected with the outer casing through a fastener in the axial direction, the first direction is opposite to the second direction, and the axial length of the first axial part is larger than the axial length of the second axial part and the axial length of the third axial part.

The invention relates to a centering device (1) comprising a gripping unit consisting of two gripping jaws (2, 3) which can be moved linearly in a gripping actuation direction (B) for opening and closing the gripping unit and which each have a tool (4, 5) with a tool contour (6, 7), a first gripping jaw (2) of the two gripping jaws (2, 3) having an arm (8), the arm extends starting from the tool (4) in a substantially arcuate course, the opening of the arcuate course being oriented perpendicular to the gripping actuation direction (B) and perpendicular to the cable supply direction (Z). The invention further relates to a system consisting of a processing station for processing a cable and a centering device (1) and to a method for operating a centering device (1).

The utility model relates to the technical field of concrete connecting structures, and discloses a steel reinforced concrete frame connecting node, which solves the problem that a frame is inconvenient to align with a connecting part when being spliced, and comprises a main column body, a profile steel plate is arranged on one side of the main column body, and concrete is filled in the profile steel plate. When the profile steel plates are spliced, the frame grooves of the profile steel plates are aligned with the mounting plates, the guide inserting plates are aligned with the positioning grooves along with downward pressing of the profile steel plates, then the profile steel plates are pressed downwards, the mounting plates are clamped into the frame grooves, meanwhile, the guide inserting plates are clamped into the positioning grooves, and the effect of facilitating alignment is achieved; in addition, the arch-shaped frame is clamped into the fixing groove, after the arch-shaped frame is completely clamped into the fixing groove, a bolt B penetrates through a threaded groove D and a threaded groove B to conduct threaded connection, splicing and fixing are completed, and finally the purposes that splicing is assisted through the guide structure, and efficiency is improved are achieved.

A fixation device for a catheter assembly having a catheter hub and a cannula configured to be inserted into a patient's skin at an insertion site includes a base assembly. The base assembly includes a base mount and a slider track including a first coupling feature. The first coupling feature includes a first arcuate shape. The fixation device further includes a hub assembly including a hub slider. The second coupling feature of the hub slider includes a second arcuate shape similar to the first arcuate shape. The second coupling feature slidably engages at least partially with the first coupling feature such that the hub slider is slidable relative to the base assembly along the slider track. The hub assembly further includes a hub base. Furthermore, the hub assembly is slidably movable relative to the base assembly along the slider track to a desired position.

The utility model provides an adjustable arch-shaped elastic automatic drag hook which comprises a first spring plate and a second spring plate, one end of the first spring plate and one end of the second spring plate are provided with a fixing shaft, and the other end of the first spring plate is also provided with the fixing shaft. The side walls of the first spring plate and the second spring plate are slidably connected with fixing buckles. A connecting plate is installed on the side wall of the fixing shaft, and a first drag hook used for dragging the incision is clamped to the surface of the connecting plate. The adjustable arch-shaped elastic automatic drag hook has the advantages that an incision can be automatically dragged, and assistance of medical staff is not needed.

The present application relates to the field of engineering machinery, and discloses a kind of field road finishing vibration soil breaking land leveling device.The device includes arc back plate, inner side is equipped with arc-shaped shovel and broken lining, outside elastic connecting beam is connected with rotating support and soil breaking roller;Rotating support is equipped with second hydraulic motor, and the roller is driven by planetary gear drive mechanism, the rotating shaft in the roller is equipped with eccentric weight, and the device is connected with traction carrier through the connecting mechanism containing bow-shaped beam and triangular support, is equipped with hydraulic lifting, angle adjusting and buffering component, the outer wall of the roller has spiral scraper, and can be integrated paving and breaking, when encountering large block of soil and stone, the magnetic coupling slips and vibrates, prevent soil and stone accumulation, improve work efficiency and adaptability to complex terrain.