9results about How to "Solve the cracking problem" patented technology

An ultra-wideband end-fire antenna with a common aperture embedded in a metal carrier includes a metal cavity with a coaxial cable compartment on one side. A radiator module is connected to the bottom of the metal cavity via a radiator fixing slot. The radiator module includes a common aperture antenna substrate. A low-frequency radiator is printed on the side of the common aperture antenna substrate closer to the coaxial cable compartment, and a high-frequency radiator is printed on the side farther from the coaxial cable compartment. This invention utilizes a dual-band antenna in a common aperture design to enhance the channel capacity and anti-fading capability of the communication system. At the same time, by achieving the antenna's carrier conformal characteristics, high isolation, and miniaturization, it enriches the antenna's application scenarios and improves the overall performance of the communication system.

The utility model relates to steel combined beam engineering technical field, concretely relates to a UHDC corrugated steel combined bent cap, including bent cap body, the cantilever end of bent cap body is provided with straight web, the upper surface of bent cap body is provided with super high ductility concrete (UHDC) layer, the below of super high ductility concrete layer is provided with ordinary concrete (NC) layer, super high ductility concrete layer and ordinary concrete layer are connected through connecting structure, the middle position of bent cap body is provided with corrugated steel web, prolongs maintenance cycle and bent cap bears negative bending moment, and the upper and lower layer concrete forms occlusal connection through dentiform interface, can improve the durability and security of bent cap greatly.

The invention discloses a crack-free heat treatment method for additive manufacturing of nickel-based superalloy, and relates to the technical field of heat treatment of superalloy, in particular to a crack-free heat treatment method for additive manufacturing of nickel-based superalloy. The invention aims to solve the technical problem that an existing additive manufacturing nickel-based superalloy is extremely easy to generate intergranular cracks in a subsequent heat treatment temperature rise stage, so that a component is directly scrapped. According to the method, the heating rate of the additive manufacturing nickel-based superalloy at the initial stage of heat treatment is increased to be not lower than 40 DEG C / min, so that precipitation of carbide M23C6 at the grain boundary in the heating process is effectively inhibited, heat treatment cracks are avoided, the method is particularly suitable for IN738LC alloy and other similar precipitation strengthening superalloy, and the method is suitable for industrial production. And an effective scheme is provided for realizing defect-free heat treatment of the additive manufacturing high-temperature alloy component. The rapid heating step can be used as pretreatment and is seamlessly connected with subsequent heat treatment for various purposes, and the application window is wide.

The utility model belongs to an equipment belt for a ceiling, which is provided with two structural forms and comprises a mounting plate forming an equipment belt main body, a groove is arranged on the upper surface of the mounting plate and divides the mounting plate into two parts, namely an inner plate in the middle and a flash on the outer ring, the inner plate in one structural form is designed to be concave, a plurality of holes are arranged on the upper surface of the inner plate, and the flash is arranged on the outer ring of the inner plate. The upper surface of the flash is a plane or a texture surface, the bottom surface of the mounting plate is provided with a rail groove and a fixed hanger, and an inclined plane or a vertical plane is arranged at the intersection of the flash and the outer side of the groove. The equipment belt is of an integrated structure, is mainly applied to ceilings of storefronts, and solves the problem that equipment installed on the top ceilings can crack under the natural loss of houses for a long time. When an equipment belt is installed, the keel on any ceiling does not need to be broken, the structural stability and installation performance of the ceiling keel are guaranteed, installation is convenient, and the early-stage installation pressure of constructors is reduced.

This utility model discloses a prefabricated slab installation design structure, belonging to the field of building decoration technology. It includes: a partition wall with a structural floor slab at its bottom, and a supporting layer on the structural floor slab; a keel frame, installed on the partition wall via mounting components; and metal dry-hanging components, fixed to the keel frame with screws. The slab composite panel is fixed to the metal dry-hanging components with screws. This utility model connects the slab to an aluminum honeycomb panel and then to the keel frame via metal dry-hanging components. This structure allows the aluminum honeycomb panel to absorb and disperse the expansion stress of the slab during thermal expansion and contraction, providing a "buffer zone" and preventing cracking or deformation due to direct rigid constraint. Similarly, in cold seasons, when the slab contracts, the aluminum honeycomb panel adjusts accordingly to maintain the overall stability of the structure, further enhancing its adaptability to thermal expansion and contraction.

The utility model discloses convenient photovoltaic energy supply equipment, which comprises a shell, a photovoltaic panel and a storage battery are respectively arranged in the shell, an interface is fixedly connected below the front surface of the shell, the convenient photovoltaic energy supply equipment further comprises a storage device, and the storage device is arranged on the side wall of the shell; the protection device is arranged outside the shell; and the supporting device is arranged below the photovoltaic panel. The utility model relates to the technical field of photovoltaic energy, and according to the convenient photovoltaic energy supply equipment, through cooperation of the box body, the worm, the hand wheel, the worm gear, the stand column, the connecting plate, the frame body, the guide part and the auxiliary part, the storage of the photovoltaic panel is realized, and the problem that most of the photovoltaic panels on the photovoltaic energy supply equipment are fixed on the equipment, so that the equipment is inconvenient to use is solved. The problems that the overall size of the equipment is large due to the fact that the photovoltaic panel cannot be stored, the overall equipment is heavy when being carried, and the convenience of the photovoltaic energy supply equipment is reduced in the prior art are solved.

This invention belongs to the field of ceramic materials and processing technology, and relates to a stable glazed ceramic hot-bent slab and its preparation method. The invention includes a green body and a glaze. The green body adopts a multi-component composite flux system, including 20-25 parts quartz, 18-22 parts calcined kaolin, 18-22 parts potassium feldspar, 22-25 parts sodium feldspar, 8-12 parts wollastonite, 2-3 parts magnesium oxide, 0.2-0.5 parts iron oxide, and 0.1-0.3 parts titanium dioxide. The glaze includes 50-70 parts frit glaze, 0.5-5 parts coloring oxide, 2-6 parts alumina, and 1-4 parts zinc oxide. Through innovative green body and glaze formulations and optimized secondary hot-bending heat treatment processes, this invention achieves a hot-bending temperature ≤1150℃ and a holding time ≤60min. The resulting ceramic hot-bent slab has advantages such as high forming accuracy, no surface cracks, good strength retention, small glaze color difference, and low energy consumption, and has good prospects for industrial application.

The offshore photovoltaic structure combined with the jacket comprises a jacket foundation, the jacket foundation is of a space truss structure composed of a plurality of pile bodies, side face cross connecting rods and transverse connecting rods, and the side face cross connecting rods are fixedly connected between every two pile bodies adjacent in the circumferential direction. Transverse connecting rods are fixedly connected to the two ends of the side cross connecting rods, a plurality of supporting rods are fixedly connected to the pile body, a supporting frame is fixedly connected to the tops of the supporting rods, a plurality of purlines are fixed to the supporting frame, the purlines are used for bearing photovoltaic modules, the main structure can be prefabricated ashore, less welding on the sea is achieved, and the offshore operation time is shortened; the jacket foundation is adopted to replace a traditional pile foundation, and the problem that a support and assemblies are cracked due to differential settlement of piles is solved.

This utility model discloses a modular lifting stage, including a base and a lifting mechanism. The lifting mechanism includes fixed plates, adjusting seats, mounting seats, and drive rods. The fixed plates are respectively disposed on the left and right sides of the upper end of the base. Adjusting seats are respectively disposed on the front and rear sides between the opposite inner sides of the two fixed plates. Drive rods are rotatably connected inside the four sets of adjusting seats. A stage panel is disposed on the upper end of the base. Mounting seats are respectively disposed on the front and rear sides of the lower end of the stage panel. The upper ends of the four drive rods are rotatably connected to the lower ends of the vertically adjacent mounting seats. A microcontroller is disposed on the upper end of the base. The input end of the microcontroller is electrically connected to an external power supply. The lifting mechanism also includes a crossbar, a connecting plate, and a bidirectional screw. This modular lifting stage optimizes the driving method, enabling more uniform load distribution and providing more stable lifting, thus solving the problem of stage panel cracks or damage caused by stress concentration.