43results about How to "Avoid affecting intensity" patented technology

The invention provides a steel structure beam column joint and a manufacture and installation method thereof, and belongs to the field of steel structures. The problem of lower strength of an existingbeam column joint is solved. The steel structure beam column joint includes a column body, a beam body and a joint, the joint includes a center pipe and a column connecting pipe, and the column connecting pipe includes inner column connecting plates, outer column connecting plates and two side column connecting plates; the inner column connecting plates are surrounded to form inner sleeves, the outer column connecting plates are surrounded to form outer connecting pipes, and the outer side of the center pipe is sleeved with the inner sleeves; the steel structure beam column joint further includes a beam connecting pipe embedded in the beam body end portion, the beam connecting pipe includes a front beam connecting plate, a rear beam connecting plate and a side beam connecting plate, and the left and right sides of the beam body end portion and the front beam connecting plate are aslant cut; the outer column connecting plate is provided with a beam connecting hole, the outer side surface of the front beam connecting plate and the inner side surface of the inner column connecting plate are fixed in a fit mode, and the beam connecting pipe and the two side column connecting plates are surrounded in the beam bodies to form a closed grouting area; and a grouting channel is formed in the center pipe, and communicated grouting holes are formed in the pipe wall of the center pipe, theinner column connecting pipe and the front beam connecting plate. The strength of the steel structure beam column joint is higher.

The invention discloses a novel carbon fiber tube processing process. The novel carbon fiber tube processing process comprises a solution preparation procedure, a solution immersion procedure, a winding forming procedure and a curing procedure. The Novel carbon fiber tube processing process is characterized by specifically including the steps that S1, a solution is prepared and then put in a container; S2, a carbon fiber composite material is immersed into the prepared solution so that the surface of the material is completely dipped in the solution; S3, the carbon fiber composite material with the solution is winded onto a winding die core, and the carbon fiber composite material is shaped through rotation of the winding die core; and S4, the shaped carbon fiber composite material is cured in a curing furnace. Curing is performed in the curing furnace with the constant temperature being 150 DEG C for one hour in the curing process, then the temperature of the curing furnace is decreased to reach the room temperature, meanwhile the curing furnace is made to be in a vacuum state through a vacuum pump for performing curing again for one hour, thus solvent is completely removed, and the shaping strength is not affected.

The invention provides a hand lay-up molding method. The hand lay-up molding method comprises the following steps of S01: laying a base layer; S02: laying a glass fiber cloth layer on the base layer, and coating resin on the glass fiber cloth layer in a rolling manner, so as to enable the resin to permeate uniformly into the glass fiber cloth layer; S03: scraping the excessive resin after the step S02; S04: laying the glass fiber cloth layer in the step S03 to a position needing hand lay-up, then compacting, and finally tearing off the base layer.

The invention relates to the field of concrete, and particularly discloses pump concrete and a preparation method thereof. The pump concrete is prepared from the following raw materials in parts by weight: 280 to 400 parts of cement, 50 to 70 parts of fly ash, 80 to 100 parts of mineral powder, 585 to 680 parts of river sand, 1050 to 1110 parts of coated broken stone, 140 to 155 parts of water, 7 to 10.5 parts of an additive and 8 to 12 parts of modified composite fibers, wherein the modified composite fibers are prepared by mixing natural bamboo fibers and polyurethane fibers. The preparation method comprises the steps of weighing the coated broken stone, the modified composite fibers and the water, mixing and stirring to obtain a mixture; weighing and adding cement, fly ash, mineral powder, river sand and an additive into the mixture prepared in the step S1, preparing a concrete mixture after stirring and mixing, pumping and pouring the concrete mixture into a mold, and obtaining pump concrete after curing. The pump concrete has the advantages that the pump concrete is not easy to block a pipeline when being pumped, and the pump concrete has higher strength after being cured.

The invention provides a steel structure joint connection device and a manufacturing method thereof, and belongs to the field of steel structures. The problem that existing steel structure joints cannot be connected in a hidden mode is solved. The steel structure joint connection device is used for connecting six hollow steel pipes, a connection device comprises six connection parts, connection parts include outer connection pipes, inner join pipes, outer join pipes and inner connection pipes, connection boxes are arranged between outer connection pipes and inner connection pipes, the connection device further comprises baffles fixed on the inner walls of the top ends of the outer connection pipes, the bottom faces of the baffles abut against the top ends of the inner connection pipes in a sealing mode, grout-venting holes are formed in the baffles, any baffle is provided with a grouting opening, concrete mortar is poured into the connection parts through the grouting openings, and the six hollow steel pipes correspondingly sleeve six outer connection pipes in a matched mode and are fixed through fasteners. According to the steel structure joint connection device, the six hollow steel pipes can be connected in a high-intensive hidden mode.

The invention discloses a header with an elliptical necking end socket and a manufacturing method thereof, and belongs to the technical field of metal material machining. An oval necking end socket isformed at one end of a header barrel in a hot spinning mode, a necking hole is reserved in the oval necking end socket and connected with a first pipe connector, and a plurality of second pipe connectors are connected onto the header barrel. According to the header with the elliptical necking end socket and the manufacturing method thereof provided by the invention, tedious procedures such as endsocket machining and groove welding are avoided, and the end socket and the header barrel do not need to be welded in quantity, so that potential quality hazards caused by welding are avoided, the possibility that the header end cover falls off is avoided, and the safety and the reliability in operating a thermal power generating unit are improved. Meanwhile, the necking hole left by the hot spinning process is connected with the first pipe connector, and the hole generated by the hot spinning process is utilized, so that the manpower and the material resources for opening the hole are saved,the production efficiency is improved, and the application prospect is good.

The invention discloses a soybean meal adhesive for blockboards and a preparation method thereof. The adhesive comprises the following components in parts by mass: 22-26 parts of soybean meal powder, 86 parts of dispersant, 2-3 parts of trypsin, 1-2 parts of composite viscosity modifier, 2-3 parts of branched polymer cross-linking agent, 0.04-0.04 part of calcium phosphate, the preparation method comprises the following steps: K1. plasma treatment of soybean meal powder under nitrogen atmosphere, then adding chlorinated Calcium and dispersant, after ultrasonic treatment, add trypsin and treat at 50-60°C for 20 minutes, add phosphoric acid after cooling, and stir evenly to obtain the first mixture; K2. Add calcium phosphate and branched polymer cross-linking agent to the first After the mixture is evenly stirred, add a compound viscosity regulator and adjust the pH to 9.0 to obtain a soybean meal adhesive for blockboards, which has good water-resistant bonding performance and ensures the practical performance of the adhesive and the durability of blockboards. sex.

The invention discloses an antirust fastener for expansion bolts, which comprises a self-tapping screw, a self-tapping nut is installed on the outer surface of the self-tapping screw close to the left end, and a ring is formed on the front end surface of the self-tapping nut close to the middle position. Curved surface groove, the front end surface of the self-tapping nut is provided with a flat ring platform groove near the middle position of the curved surface groove, the inner middle position of the self-tapping nut is provided with a screw rail hole, and the inner wall of the self-tapping nut is provided with spiral rail. The anti-rust fastener can realize the sealing of the interface of the annular surface groove, which can effectively avoid the accumulation of water vapor at the interface, prevent local corrosion, avoid the support rail in the process of rotating the self-tapping nut, and prevent water vapor from entering the inside of the casing body , realize the internal rust prevention of the fastener, ensure that the interior is in a dry state, realize the local anti-corrosion function, provide a buffer for the extrusion force between the bolt head and the casing body, and facilitate the disassembly of the fastener by the staff to offer comfort.

The invention provides a road fence with a breaking structure, and belongs to the field of municipal devices, solving the problem that the prior fences have the head-stuck hidden danger. The road fence with the breaking structure comprises two stand columns arranged with vertical interval. A upper cross-bar and a lower cross-bar with parallel and horizontal setting are connected between the two stand columns. The upper cross-bar is located under the lower cross-bar. Multiple vertical bars with parallel and vertical setting are connected between the upper cross-bar and the lower cross-bar. A breaking rod which is vertically arranged and parallel to the vertical bars are connected between every two neighboring vertical bars. The upper end and the lower end of each breaking rod are fixed with the upper cross-bar and the lower cross-bar. An annular breaking groove surrounding the axis of each breaking rod is formed at the position where the breaking rod approaches the upper cross-bar. The road fence also comprises hard sheathes. The sheaths cover the outer sides of the breaking rods and clad the breaking groove. In application of the road fence with the breaking structure, rapid rescue can be carried out; and the road fence has high overall strength.

The application relates to the field of concrete, and specifically discloses a pumping concrete and a preparation method thereof; the pumping concrete is made of raw materials containing the following parts by weight: 280-400 parts of cement, 50-70 parts of fly ash, mineral powder 80‑100 parts, 585‑680 parts of river sand, 1050‑1110 parts of coated gravel, 140‑155 parts of water, 7‑10.5 parts of admixture, 8‑12 parts of modified composite fiber; the modified composite fiber is composed of bamboo fiber and It is made by mixing polyurethane fibers; its preparation method is: take coated crushed stone, modified composite fiber, and water and mix and stir to make a mixture; weigh cement, fly ash, mineral powder, river sand, The admixture is added to the mixture prepared by S1, and the concrete mixture is prepared after stirring and mixing, pumped and poured into the mold, and the pumped concrete is made after curing; it has the function of making the pumped concrete not easy to block the pipeline during pumping , and has the advantage of higher strength after curing.

The invention provides a hand lay-up molding method. The hand lay-up molding method comprises the following steps of S01: laying a base layer; S02: laying a glass fiber cloth layer on the base layer, and coating resin on the glass fiber cloth layer in a rolling manner, so as to enable the resin to permeate uniformly into the glass fiber cloth layer; S03: scraping the excessive resin after the step S02; S04: laying the glass fiber cloth layer in the step S03 to a position needing hand lay-up, then compacting, and finally tearing off the base layer.

The invention discloses a base-band chip heat-dispersion structure which comprises a circuit board, a base-band chip and a thermal conductive heat pipe, wherein the base-band chip and the heat pipe are respectively arranged on the two opposite surfaces of the circuit board, the heat pipe is attached and fixed to the circuit board, the heat pipe has a heat absorption end facing the base-band chip, the base-band chip and the heat pipe are respectively arranged on two opposite surfaces of the circuit board, and the heat absorption end of the heat pipe faces the base-band chip. Heat of the base-band chip can be directly conducted to the heat absorption end of the heat pipe. The thermal resistance is relatively low, heat transfer efficiency is high, and the heat-dispersion performance is improved. The heat pipe is fixed on the circuit board and integrated with the circuit board to install and position the heat pipe, and a groove for installing and positioning the heat pipe does not have to be arranged in other structures, such as a middle frame, of the mobile terminal. The strength of other structural member of the mobile terminal may not be affected. The invention further discloses a mobile terminal employing the base-band chip heat-dispersion structure.

The invention provides an impact-resistant filter net frame and an assembly and disassembly method thereof, which belong to the field of water purifiers. It solves the problem that the existing filter screen is easily deformed by impact. The impact-resistant filter screen frame includes a filter frame, which includes a frame and a filter net, and also includes a support frame, two vertical support rods and a horizontal support rod of the support frame, and two vertical curved rods and horizontal curved rods, and a vertical support rod The top end is connected with the vertical bending rod through a vertical telescopic adjustable mechanism, and also includes a front support seat and a rear support seat. The front support seat is provided with two front support holes, and the rear support seat is provided with two rear support holes. The support rod and a horizontal support rod are passed through the two front support holes, the other vertical support rod and the other horizontal support rod are passed through the two rear support holes, and the front support seat is equipped with a In the supporting part of the head, alignment grooves are arranged on the outside of the four frame bars, and alignment blocks are fixed on the opposite side of the two vertical bending bars and the opposite side of the two transverse bending bars. The filter net frame has high impact resistance.