36results about How to "Reasonable mechanical properties" patented technology

The invention discloses a mirror board support device of a solar trough type power generation system, which comprises a grider brace and a reflector supporting structure, wherein the reflector supporting structure is arranged on the grider brace through rotating parts which are arranged on two ends of the reflector supporting structure, and can rotate around axial lines of the rotating parts under the drive of an external drive device; the reflector support structure comprises a plurality of grider framework units which are connected end to end, and arc supporting parts for supporting a reflector mirror are arranged on two ends of each grider framework unit. The mirror board support device of the solar trough type power generation system has the advantages that: 1) each main member can be produced in a factory standardization manner; 2) mechanical bending resistance and torsional properties of the grider framework structures are reasonable, and materials are saved; 3) connection quantity of field bolts is little, assembly errors are favorably controlled, and assembly accuracy is higher.

The present invention relates to a basic jaw type self-locking differential, which has the characteristics of no collision, high reliability, and long service life. The present invention is characterized in that a force transmission tooth and separating teeth and an accessory blocking tooth which are positioned on driven rings are connected as a whole; a self-limiting type blocking embedding mechanism is embedded by two embedding mechanisms of a force transmission embedding mechanism and a separation embedding mechanism under the differential condition, and axially positioned in the two mechanisms and radially positioned in the two mechanisms, between the two mechanisms or outside the two mechanisms, a lift angle of both sides blocking the working surface is formed to enough ensure the friction self-locking collided on the both sides and the stability of the blocking operating condition, in order that the lift angle has the capabilities that the adaptive axle base changes and the abrasion is automatically compensated, and the slipping mode of no collision is unvaryingly maintained between the separating teeth in the operating condition, two processes of the self-separating block process and the embedding return process are absolutely reliable, and has no relation to the stability of the spring parameter compacted by the driven rings, hence the problem that the driven rings on the both sides are synchronously separated is not a problem any longer. The processing of the differential is obviously improved, the difficulty of the assembly is largely reduced, and the performance, the service life, and the interchangeability, etc. are remarkably improved.

The invention relates to a non-electric welding agent applicable to emergency welding repair of low-carbon steel thin-walled sheet parts below 5mm. The welding agent is formed by mixing powdery thermite, slagging constituents, alloying agents and thinners. The welding agent generates the self-propagating reaction after being ignited, the thermite in the welding agent reacts to generate heat for maintaining reaction and also provide enough heat to enable parent metal to melt, and the metal part generated by the thermite and the melting part of the parent metal jointly form a molten bath to be subjected to metallurgic reaction at high temperature; the slagging constituents and Al2O3 generated by the thermite jointly form slag low melting point and viscosity, the slag is effectively separated from metal ingredients in the molten bath, Al2O3 is taken out, and the defect of slag inclusion in weld metal is overcome; alloy ingredients in the alloying agents enter the molten bath at high temperature generated by the thermite and participate in the metallurgic reaction of the molten bath jointly, so that the weld metal has the ideal microstructure and reasonable mechanical property; the thinners are used for adjusting the self-propagating reaction speed and reaction temperature of the welding agent, so that operation is convenient.

The invention discloses an adjustable mold heating and clamping platform for a composite material pultrusion machine, relates to an adjustable mold heating and clamping platform, and aims to solve the problems that quality and performance of a product are directly influenced due to the fact that the straightness of the mold center and a traction center cannot be adjusted with a conventional pultrusion machine mold fixing and heating manner. A tension detecting and unloading support is fixedly mounted on the left side of the upper end of a mold heating and clamping platform, a sinking platform is arranged on the mold heating and clamping platform, a support sliding table is mounted on the sinking platform of the mold heating and clamping platform, two adjustable mold clamping devices are glidingly arranged on the support sliding table, a protecting cover is mounted in the middle of the support sliding table, a mold positioning bracket is mounted on one adjustable mold clamping device close to one side of the tension detecting and unloading support, a pultrusion mold is mounted between the two adjustable mold clamping devices and is positioned by the mold positioning bracket, and a heating plate is mounted on the pultrusion mold. The adjustable mold heating and clamping platform applies to composite material pultrusion.

The invention provides a three-dimensional roll bending forming device, which comprises a base, an X-direction motion drive mechanism, an X-direction ball screw assembly and a forming rack provided with a roll, wherein the forming rack is movably connected with the base. The three-dimensional roll bending forming device also comprises a Z-direction motion drive mechanism and a Z-direction ball screw assembly, wherein the Z-direction motion drive mechanism and the Z-direction ball screw assembly are vertically arranged; the Z-direction ball screw assembly comprises a Z-direction ball screw and a Z-direction nut assembly which is in rolling connection with the Z-direction ball screw through a ball; and one end of the Z-direction ball screw is linked with the Z-direction motion drive mechanism, and the Z-direction nut assembly is fixedly connected with the forming rack. Therefore, the three-dimensional roll bending forming device is capable of moving in an x and a y planes, and also moving in the Z-axis direction when raw materials are subjected to bending deflection operation; and the accuracy of carrying out bending deflection on the raw materials is improved, three-dimensional processing on the raw materials is realized, and the section bar obtained by processing has reasonable mechanical property.

The invention discloses a basic electrode for all-position welding of ultra-low hydrogen, high toughness and high strength steel. The coating mass of the electrode of the invention is composed of: CaCO330-50%, CaF220-30%, TiO27-10%, SiO26-10%, Ferrochromium alloy 3-6%, ferromanganese alloy 4-9%, ferromolybdenum 4-8%, metal nickel 1-4%; the electrode of the invention can meet the welding of high-strength grade steel, has excellent low-temperature impact toughness, and excellent operating performance , The arc is stable, the spatter is small, the shape is beautiful, the mechanical properties of the weld metal are reasonably matched, and it has excellent crack resistance.

The invention provides a bent spoke rail wheel applied to the technical field of railway vehicle parts. Each wheel spoke (2) of the bent spoke rail wheel is arranged of a curved surface structure, oneend of each spoke (2) is connected with a hub (1), the other end of each spoke (2) is connected with a rim (3), each wheel spoke (2) comprises a spoke side face I (4) and a spoke side face II (5), multiple side face I curved surfaces (6) are arranged on each spoke side face I (4) from the end connected with the hub (1) to the end connected with the rim (3), and multiple side face II curved surfaces (7) are arranged on each spoke side face II (5) from the end connected with the hub (1) to the end connected with the rim (3). By the adoption of the bent spoke rail wheel, the good braking performance and easy volume production are guaranteed, meanwhile, the wheel is small in weight, the reasonable strength, rigidity and braking thermodynamic performance of the wheel are guaranteed, and competitiveness is improved.

The invention relates to the technical field of hoisting equipment, in particular to a tower crane blind area ultrathin steel plate shear wall hoisting device and a hoisting method thereof. The towercrane blind area ultrathin steel plate shear wall hoisting device comprises a shoulder pole beam, two shoulder pole beam riggings used for being connected with one end of a steel plate shear wall areconnected with one end of the lower surface of the shoulder pole beam, an electric hoist is arranged in the middle of the lower surface of the shoulder pole beam, a hook of the electric hoist is connected with two electric hoist riggings used for being connected with the middle of the steel plate shear wall, and the two ends of the upper surface of the shoulder pole beam are connected with two hoisting riggings connected with a lifting hook of a swing arm tower crane. The tower crane blind area ultrathin steel plate shear wall hoisting device and the hoisting method thereof are easy, convenient and rapid to operate, low in cost, safe and reliable and high in stability, and plastic deformation does not occur on the steel plate shear wall in the hoisting process.

The invention discloses a three-strand splitting rolling method for rebars with the diameter phi of 12 mm. 18 rolling mills are involved in the method. The 18 rolling mills are divided into a roughing mill unit, an intermediate mill unit and a finishing mill unit, wherein the roughing mill unit includes 6 rolling mills, the intermediate mill unit includes 6 rolling mills, and the finishing mill unit includes 6 rolling mills. Billet steel is rolled by the 18 rolling mills in sequence, and the technological material shape and size of the 18 rolling mills are optimized and adjusted. The three-strand splitting rolling method for the rebars with the diameter phi of 12 mm solves the problems that split strips are seriously folded, the three-strand difference is unstable, and the degree of freedom of rolled pieces is controlled, the height, width and side wall slope of hole patterns are reasonably controlled, it is avoided that the rolled pieces deflect and collide with loop rolls or loop side walls when entering loops, and rolling rejects are generated, it is avoided that the rolled pieces get stuck at loop-rising roll gaps, the surface quality of finished products is improved, and the size of the finished products is stabilized.

The invention discloses a fabricated FRP-gradient sea sand concrete combined wallboard. The combined wallboard comprises FRP grids, FRP ribs, a high-ductility fiber reinforced sea sand cement-based composite material, sea sand concrete and connecting pieces; a wallboard main body is composed of a high-ductility fiber reinforced sea sand cement-based composite material layer and an internal sea sand concrete layer, wherein the FRP grids, and the vertical and horizontal FRP bars are planted in the two sides of the high-ductility fiber reinforced sea sand cement-based composite material layer; and the vertical FRP bars and the horizontal FRP bars on the two sides are connected through the connecting pieces at part of crossed joints. According to the fabricated combined wallboard, the characteristics of light weight, high strength, corrosion resistance and the like of a FRP material and the advantage that the sea sand concrete can be obtained from local materials are fully utilized, so that the fabricated combined wallboard has the characteristics of easiness in standardization of the structural form, convenience in transportation, construction and installation, corrosion resistance, high bearing capacity, high lateral stiffness, high flexural rigidity and the like, has good adaptability in severe environments such as coastal ocean, and is suitable for popularization and application.

The invention discloses a novel cement-based multi-shield dry powder mortar, which is prepared from 20% to 40% of cement, 35% to 55% of barite aggregate, 20% to 35%. of neutron shield aggregate, 0% to 0.25% of superplasticizer, 0% to 0.50% of redispersible latex powder, 0% to 0.05% of a water retaining agent, and 0% to 0.5% of an antifoaming agent. The particle size of the largest particles in the aggregate is 2.0 to 5.5 mm, the particle size of the smallest particles is 0.35 to 0.75 mm, and the particle size of the other particless is of continuous gradation. The novel cement-based multi-shield mortar prepared by the invention has good X-ray, gamma-ray, neutron ray shield performance, and good mechanical properties, waterproof performance and construction performance, and has the advantages of high late strength, excellent durability, low cost, etc.

The invention provides a functional packaging film and a production process thereof. The functional packaging film comprises the following raw materials in parts by weight: 80-100 parts of polyethylene resin, 4-16 parts of carboxymethyl chitosan, 0.4-0.8 part of diacetyl tartaric acid ester of mono(di)glycerides, 3-6 parts of silica, 0.3-0.8 part of sodium starch octenyl succinate, 0.025-0.055 part of antioxidant, and 0.1-0.3 part of benzoic acid. The production process of the functional packaging film comprises the following steps: S1, weighing raw materials; S2, preheating and drying polyethylene resin; S3, preparing a functional composition by carboxymethyl chitosan and diacetyl tartaric acid ester of mono(di)glycerides; and S4, mixing the materials, and conducting granulation, drying and film blowing, so as to obtain the functional packaging film. The packaging film provided by the invention has excellent bacteriostasis and gas permeability, prolongs the preservation time of packaged objects, and has a simple production process.

The invention discloses a cutter inclination angle-variable cutter frame for a card paper cutting machine. The cutter frame comprises a cutter-frame main beam, wherein a sliding frame assembly which can rotate relative to the cutter-frame main beam is arranged on the cutter-frame main beam; a sliding pillow assembly which can move up and down relative to the sliding frame assembly is arranged in the sliding frame assembly; a cutter handle assembly is detachably mounted in the sliding pillow assembly; a paperboard pressing plate is arranged below the cutter-frame main beam; and a plurality of blade passing holes into which a blade of the cutter handle assembly can be inserted are formed in the paperboard pressing plate. The cutter frame is suitable for various working conditions of the cardpaper cutting machine and achieves cutter feeding and retracting at different cutter inclination angles. From obtained characteristics, it can be known that the cutter frame can be used to achieve card paper processing at different cutter inclination angles, so as to achieve different artistic effects of card paper.

A rubber modified nylon composition used for preparing the nylon-plastic alloy is prepared from PA6 (30-80%), ABS (30-80%) including PB (20-80%), and SAM (2-10%) including AN (10-30%) and MA (1-15%). Its advantages high content of MA in SAM, less consumption of SAM and simple preparing process.

The invention provides antistatic drum cloth for mine, which is formed by interweaving monofilaments in the warp direction and the weft direction. In the square area of 2.5 centimeters * 2.5 centimeters, the number of the monofilaments in the warp direction is at least 7 and at most 12, and the number of the monofilaments in the weft direction is at least 6 and at most 11. The antistatic drum cloth for mine solves the problem that unreasonable weaving density of the antistatic drum cloth for mine in the prior art affects the use in the construction, and further achieves the effects of high strength and reasonable mechanical property.