11results about How to "Avoid cracking damage" patented technology

This utility model relates to the field of civil engineering technology, specifically to a large-diameter prestressed pipe pile with bending resistance, including a prestressed pipe pile mechanism. The prestressed pipe pile mechanism includes a pipe pile body one and a pipe pile body two. The bottom end of the pipe pile body one is provided with the pipe pile body two. During use, the pipe pile body one, the pipe pile body two, and the clamping mechanism are disassembled for transportation. After arriving at the site, the pipe pile body one and the pipe pile body two are connected together by the clamping mechanism and then put into use. During use, a connecting buffer plate is clamped at the connection between the pipe pile body one and the pipe pile body two.

The utility model discloses a kind of UHPC cable manhole covers, including the cover plate body made of UHPC, multiple groups of reinforcement cage are pre-buried along length direction in the cover plate body inside, and reinforcement cage includes longitudinal main reinforcement and transverse distribution reinforcement;Anti-skid texture is equipped on the upper surface of cover plate body, and sealing groove is equipped on the side surface of four around, and rubber sealing strip is adaptively installed in sealing groove;Hoisting connecting part is equipped on the side surface of both ends of the short side of cover plate body;Reserved mark area is on the upper surface of cover plate body, multiple groups of reinforcing ribs are arranged along width direction in the cover plate body inside, and drainage groove is set up on the upper surface, the utility model uses UHPC material, compared with traditional concrete, high in strength, good in durability, under the premise of guaranteeing cover plate strength, cover plate thickness can be appropriately thinned, effectively reduce dead weight, after testing, the utility model cover plate body compared with same size ordinary concrete cover plate dead weight lightens 30%-40%, convenient to carry and install, reduce construction difficulty and labor intensity;Meanwhile, the high durability of UHPC makes cover plate long-term use under harsh environment, reduces maintenance replacement frequency, reduces whole life cycle cost.

This utility model relates to the field of connectors, specifically a low-voltage cable connector, including a connector body, a cable fixedly mounted on the connector body, the connector body and the cable being electrically connected, a limiting component on the connector body, a protective component on the periphery of the connector body, and an adjusting component on the protective component. The limiting component includes several trapezoidal slots formed on the connector body, located on the top, bottom, left, and right sides of the connector body, respectively. A trapezoidal block is disposed within each trapezoidal slot, and a clamping block is fixedly connected to the end of the trapezoidal block away from the connector body, the clamping block penetrating the trapezoidal slot and extending to the outside. Compared to the prior art, this patent, by setting up protective components and protective covers, can protect the outer shell of the connector body and the pins inside the connector body, thereby preventing damage to the connector body and its pins from impacts.

This invention provides a photothermal conversion phase change insulation flexible composite pipe and its preparation method, comprising a base pipe layer and, from the inside out, an adhesive transition layer, a phase change insulation layer, a photothermal conversion layer, and a protective layer. The base pipe layer consists of an inner lining layer, a double-layer fiber reinforcement layer, and an outer protective layer. The adhesive transition layer is a mixture of ethylene-vinyl acetate copolymer and silane coupling agent. The phase change insulation layer uses modified melamine foam as a skeleton, loaded with erythritol phase change material and nano-silica. The photothermal conversion layer is a composite layer of polydopamine and waterborne polyurethane. The protective layer is a polyvinyl fluoride layer. The preparation method includes extrusion winding of the base pipe layer, thermal spraying of the adhesive transition layer, vacuum impregnation and hot pressing of the phase change insulation layer, spraying and drying of the photothermal conversion layer, and extrusion cooling and shaping of the protective layer. This invention achieves a combination of photothermal conversion energy storage and flexible insulation, with strong layer bonding, good flexibility, high mechanical strength, low heat loss, energy saving and environmental protection, and is suitable for various scenarios such as centralized heating and industrial steam transportation.

The utility model relates to an assembly type component fixing device, which belongs to the technical field of assembly type component installation, and comprises an upper support plate, a load-bearing base, a fixing anchor rod, an assembly cover and a fixing bolt, the load-bearing base is uniformly provided with connecting plates, the load-bearing base is fixedly connected with a lower support plate, the top of the lower support plate is rotatably connected with the upper support plate, and the top of the lower support plate is fixedly connected with the assembly cover. A groove is formed in the upper supporting plate, first clamping strips are installed in the groove, a groove is formed in the lower supporting plate, second clamping strips are installed in the groove, and the number of the first clamping strips and the number of the second clamping strips of the upper supporting plate and the number of the second clamping strips of the lower supporting plate are both two. The fabricated component fixing device not only can be quickly unfolded for use and folded for storage, but also can be mutually spliced, is not only suitable for common strip-shaped fabricated upright posts, but also suitable for wide fabricated walls, has better applicability, is simple in structure and convenient to operate, and can effectively improve the construction efficiency.

The utility model discloses a bearing wheel with a good heat dissipation function, and belongs to the technical field of bearing wheels. The bearing wheel with the good heat dissipation function comprises a wheel body and a wheel shaft, the wheel body is installed on the wheel shaft in a rotating mode, the wheel body comprises a wheel core and a wheel face arranged on the outer side of the wheel core, at least one end of the wheel core is provided with a heat dissipation ring capable of rotating along with the wheel body, and heat dissipation blades are arranged on the outer side of the heat dissipation ring. The heat dissipation blades are distributed in a spiral radial shape, and a spiral flow guide groove is formed between every two adjacent heat dissipation blades. According to the bearing wheel, the heat dissipation ring is arranged at the end of the wheel core, heat dissipation airflow is generated through the heat dissipation blades when the bearing wheel rotates, the heat dissipation performance of the bearing wheel is improved, the working temperature of the bearing wheel can be greatly reduced, the service life of the bearing wheel is prolonged, and the working stability of the bearing wheel is improved.

This invention, entitled "A Spatial Reinforced Composite Slab and its Construction Method," belongs to the field of building construction technology. The technical problem to be solved is the weak crack resistance and slip resistance of the composite surface of the prefabricated composite slab, and the high project cost. The key technical points are: it includes a prefabricated composite slab layer, a cast-in-place prefabricated composite slab layer, and a spatial reinforcement cage; the upper part of the spatial reinforcement cage is within the cast-in-place prefabricated composite slab layer, and the lower part is within the prefabricated prefabricated composite slab layer, forming an integral spatial skeleton; the spatial reinforcement cage includes reinforcing bars, rectangular bars, and support bars. The reinforcing bars are divided into upper and lower reinforcing bars, which are located within the rectangular bars; the support bars are bent and continuous within the spatial reinforcement cage, and are interleaved with the upper and lower reinforcing bars.

The utility model discloses a drawing plate suitable for various vehicle types, which relates to the technical field of conveying, logistics transportation and loading, and comprises a tongue plate, a rack, an upper roller and a roller component II, the tongue plate comprises an upper plate with an angle, a vertical plate, a lower plate, a vertical plate, a roller assembly I, a gasket, a mandrel I and a cotter pin; wherein the side face of the upper plate is fixedly connected with the vertical faces of the vertical plates, the upper face of the lower plate is fixedly connected with the lower face of the upper plate, the multiple vertical plates are distributed on the lower face of the upper plate, the first roller assembly is connected with the first mandrel, the first roller and the second roller can rotate along the first mandrel and the second mandrel respectively, and rubber-coated roller design is adopted for the first roller and the second roller. The bearing of the pulling plate on the carriage plate is reduced, on one hand, the rigidity of the whole pulling plate can be improved, on the other hand, the obstacle crossing capacity of the whole pulling plate can be improved, and the pressure on the carriage plate is also reduced.

The tool comprises a base, a product positioning plate, an injection molding product, a positioning and clamping mechanism and an automatic cutting assembly, the base comprises a bottom plate and side plates, the side plates are symmetrically installed on the two sides of the bottom plate, the automatic cutting assembly is arranged in the middle of the interior of the bottom plate, the product positioning plate can correspondingly cover the two side plates, and the product positioning plate can correspondingly cover the two side plates. The product positioning plate is parallel to the bottom plate, a cutting window opposite to the automatic cutting assembly is arranged in the middle of the product positioning plate, product containing areas are arranged on the two sides of the cutting window, the two sheet-shaped injection molding products are connected through a sprue material, the two injection molding products are correspondingly placed in the product containing areas on the two sides, and the sprue material is aligned with the cutting window. The positioning and clamping mechanism abuts against the two injection molding products from the upper portion, and the automatic cutting assembly penetrates through the cutting window to conduct automatic stamping and cutting on the connecting points of the sprue materials and the injection molding products. The tool is low in manufacturing cost, easy to operate, smooth in notch and capable of preventing products from being damaged by stress concentration.

This invention relates to a wind power foundation for on-site expansion, comprising an anchor bolt foundation ring fitted outside the original foundation ring. The anchor bolt foundation ring includes a lower anchor plate, an upper anchor plate used in conjunction with the lower anchor plate, and several prestressed anchor bolts connecting the upper and lower anchor plates. Several sets of coupling steel components I are uniformly fixed circumferentially to the connection between the lower anchor plate and the original foundation ring. Coupling steel components II are welded to the outer side of the lower anchor plate at positions corresponding to the coupling steel components I. Multiple sets of U-shaped connectors with their free ends anchored in the original foundation are uniformly arranged along the length of the coupling steel components I and II. Reinforcing mesh is distributed at the original foundation, the outermost position of the coupling steel components II, the position where the coupling steel components II connect to the lower anchor plate, and the position where the coupling steel components I connect to the original foundation ring. This expansion foundation expands and reinforces the original wind farm on-site, making full and effective use of the original foundation and reducing the construction period and construction costs.

The invention relates to a silicon-carbon negative electrode material and preparation and application thereof.The preparation method of the silicon-carbon negative electrode material comprises the following steps that 1, zinc salt and 2-methylimidazole are weighed to react in a solvent, a zeolite imidazole framework substance ZIF-8 is prepared, then centrifugation, washing, drying and grinding are conducted, and a powdery carbon source precursor is obtained; (2) carrying out high-temperature calcination treatment on the obtained carbon source precursor to obtain a porous carbon material; and (3) taking a porous carbon material as a substrate bed layer in a fixed bed reactor, sequentially introducing silicon source gas and carbon source gas at high temperature to perform chemical vapor deposition, filling nano silicon into pore channels of the substrate material, and coating a carbon layer outside to enhance the silicon-carbon bonding strength, thereby obtaining a target product. Compared with the prior art, the silicon-carbon negative electrode material prepared by the method has excellent capacity performance and cycle performance, the production scale is easy to amplify, the cost is controllable, and the method has a wide commercial prospect.