357results about How to "Warranty Strength Requirements" patented technology

The invention discloses a super-power five-cylinder plunger pump. The super-power five-cylinder plunger pump comprises a power end assembly, a fluid-power end assembly and a reduction box assembly; the power end assembly adopting a sectional type structure design includes a crankshaft box body, a crosshead box body and a space-stop rack, one end of the crosshead box body is connected with the crankshaft box body, and the other end of the crosshead box body is connected with the space-stop rack; the fluid-power end assembly is arranged at one end of the space-stop rack, and the fluid-power endassembly passes through the space-stop rack and the crosshead box body in sequence and is connected with the crankshaft box body through bolts; and the reduction box assembly is connected with the crankshaft box body, a crankshaft in the crankshaft box body is forging alloy steel, the crankshaft includes six shaft necks and five crank threw, each crank throw is arranged between two adjacent shaftnecks, and the distance between the crank threw and the rotating center of the crankshaft is 110mm to 160 mm. The super-power five-cylinder plunger pump has the beneficial effects that the rated inputpower of the super-power five-cylinder plunger pump is 5000 hp, so that the problem that high-power motors cannot be matched with the plunger pumps of corresponding specifications in electric drive fracturing is solved, and the contradictions that the conditions in oil and gas well fields are limited and the matching of fracturing equipment is much is further solved at the same time.

This invention relates to a load automobile hub axle tube whole fiber forging and shaping process and its mould. It is characterized by the following: adopting solid material; finishing hub axle tube surface and deep hole extrusion shaping to get the whole fiber metal flow wire along axle direction and the inner hole is shaped by extrusion without process.

The invention discloses a cooling system used for an ultra-high strength steel plate thermal die cutting and forming die. The die comprises a concave die and a concave die seat; a water chamber is arranged between the concave die and the concave die seat; the water chamber is communicated with a water inlet and a water outlet. The water chamber is arranged between the concave die and the concave die seat of the invention; after cooled water is inlet in the water chamber, a steel plate workpiece can be quickly cooled by the thermal conduction between the die and the steel plate so as to meet the quenching condition of the steel plate. Especially, the water chamber is also internally provided with a supporting column; the upper end of the supporting column is contacted with the lower bottom surface of the concave die; the lower end of the supporting column is contacted with the upper bottom surface of the concave die seat; therefore, the structural strength of the concave die is ensured, the flowing direction of the water flow can be guided, flow perturbation conditions can be provided, meanwhile, the heat transfer area is increased, and the heat exchange efficiency between the cooled water and the die is improved.

The invention discloses a deep sea net box cultivating apparatus for offshore wind field, which comprises an offshore wind turbine foundation, wherein an operation platform is mounted on the top portion of the offshore wind turbine foundation; a rotary sleeve ring fixing system is mounted on a lower end of the offshore wind turbine foundation; the rotary sleeve ring fixing system is connected to a rotary arm mechanism; the rotary arm mechanism is connected to an offshore net box module through a cable connecting rod component; the rotary sleeve ring fixing system comprises a reinforced cylinder sleeve; an upper rotary sleeve ring and a lower rotary sleeve ring are respectively mounted on an upper end and a lower end of the reinforced cylinder sleeve; and the upper rotary sleeve ring and the lower rotary sleeve ring are respectively connected to the rotary arm mechanism through an upper connecting buckle and a lower connecting buckle. According to the utility model, by adopting the apparatus provided herein, the offshore wind field can be applied with various purposes; organic combination between the offshore wind power generation and the offshore net box cultivation is realized; the space of the offshore wind field and the offshore wind power are fully utilized, thus improving the overall economy benefits.

The present invention provides a 100 L carbon fiber wrapped aluminum-lined composite cylinder, including a weldless aluminum liner, a mounting base, an adhesive layer and a carbon fiber composite layer. The mounting base and the weldless aluminum liner form a smooth flattening winding mandrel; the external part of the mandrel is wound by the carbon fiber composite layer; and the adhesive layer is arranged between the mandrel and the carbon fiber composite layer and is used for firmly connecting the weldless aluminum liner and the carbon fiber composite layer. The composite cylinder has the advantages of large volume, high pressure resistance, high efficiency, light weight, high security, low cost and short manufacturing cycle. The present invention also provides a manufacture method of the carbon fiber wrapped aluminum-lined composite cylinder.

The invention specifically relates to an interior decorative composite board for automobile roof panel comprising an intermediate non-woven layer, an upper non-woven layer composited with the upper surface of the intermediate non-woven layer and a lower non-woven layer composited with the lower surface of the intermediate non-woven layer. Weight percentage of the materials used by the intermediate non-woven layer is as follows: jute fiber 48-80%, low melting point fiber 20-52%, and other fiber 0-20% such that the interior decorative composite board for automobile roof panel comprising the intermediate non-woven layer has great strength and excellent breathability and sound-proof effect.

This invention relates to a process of producing 350MPa cold rolled steel magnet. It includes steps as follows: (1)to heat plate body to 1160-1230DEG C;(2)hot

This invention relates to a process of producing 250MPa cold rolled steel magnet. It includes steps as follows: (1)to heat plate body to 1160-1230DEG C;(2)hot rolling steps: the start rolling temperature 1050-1100DEG C,end rolling temperature 840-880DEG C,cooling to 640-700DEG C for coiling. (3)cooling to 70DEG C below for acid picking. (4)cold rolling steps; (5) bell furnace anneal; controlling temperature 660-680DEG C (6) temper rolling, then the products. Account to weight the main chemical composition is: C 0.03-0.09%,Si 0.10-0.30%,Mn 0.30-0.70%,Nb 0.015-0.025 %,Als 0.01-0.07%,P <=0.025%,S <=0.010%, Fe the rest.

The invention discloses a plastic motor case and bearing device installing method, where the bearing device comprises gland, oil containing bearing and oiled felt, and the method comprises the steps of: 1) firstly injection-moulding a plastic motor case with bearing cavity for reserving; and II) placing the oil-containing bearing and oiled felt in the bearing cavity, and then fixing the gland on the bearing room to fix them in the bearing cavity. And it has advantages of simple process, low manufacturing cost, coaxial matching, low operating heat and long service life.

The invention discloses an optimum design method for a steel rail weld seam finish-milling machine tool beam body based on a BP neural network and a genetic algorithm. The optimum design method includes the steps that firstly, the size of an auxiliary structure for supporting or reinforcing a whole in the beam body is selected as a design variable, and the optimization criterion of the beam body is to improve rigidity and reduce total weight on the premise of ensuring structural strength; secondly, the strength, rigidity and weight of the beam body are obtained by adopting an orthogonal test method to serve as sample data; thirdly, the neural network is designed and is trained with the sample data until the difference between a predicted value and a sample value is defined within an allowance error range; fourthly, a population is generated, and population fitness and constraint condition values are calculated by using the neural network so that genetic algorithm optimization solution can be conducted; fifthly, optimum obtained parameters are analyzed in a simulation mode to determine optimization result feasibility. On the premise of ensuring the structural strength, the structural rigidity is effectively improved, the structural weight is effectively reduced, and therefore the overall structural performance of a finish-milling machine tool is promoted.

The invention discloses a manufacture method for a maglev track beam. The manufacture method comprises the following steps: tying a framework of steel reinforcement, manufacturing an internal mold, putting the internal mold in the framework of steel reinforcement, mounting a formwork of track beam, and regulating the formwork of track beam so as to meet the required linearity. The lateral displacement relative to the track beam and the perpendicularity relative to a bottom mold of the side mold of the formwork of track beam can be regulated through a regulating component, and a translating component arranged outside end molds is used for regulating the longitudinal movement relative to the side mold of each end mold. The manufacture method has the advantages of being easy to operate, high in regulating precision and simple to assemble and disassemble the molds. A control component can respectively regulate the transverse displacement, the longitudinal displacement and the vertical displacement of the track beam, the linearity precision can achieve the range of +/-5, and the precast quality of a curved track beam is ensured. The intelligent control can realize high regulating precision, high efficiency and good reliability of a formwork system, and the manufacture method is particularly applicable to precasting of medium-low-speed maglev linear or curved track beams.

The invention discloses a three-dimensional printed object structure optimizing algorithm based on stress analysis. The algorithm comprises steps as follows: a three-dimensional network model of a printed object is acquired, and a user sets force distribution and printed material size constraints; printing parameters of the three-dimensional model are optimized automatically, a heterogeneous frame structure is generated automatically through input by the user, and initial parameters are determined and optimized; a solid model is generated according to optimized printing parameters; three-dimensional printing is performed on the generated solid model, and a three-dimensional printing model is established with physical properties of a printed material, printing conditions and material sizes of the printed object used as constraints and stress minimization of the printing model used as the target. With the adoption of the algorithm, adaptive optimization of the scaling ratio and the number in a frame can be realized, the strength requirement for the object is guaranteed under the condition that the regulated material size is used, and besides, the model can be simplified; the strength of the printed object is improved through parameter optimization and the topology structure of the object is simplified.

The invention relates to a construction method for an immersed tube compaction cast-in-place concrete pile in the construction in a pebble bed, a puddingstone bed, a sand bed, and a strong weathered mudstone. Double casing pipes are hammered, simultaneously, the inner pipe is extracted from the stratum, then concrete is cast into the outer pipe, the inner pipe is positioned into the outer pipe and presses the surface of the concrete, then the outer pipe is pulled up at uniform speed, and the formation of the cast-in-place concrete pile is completed. Earth is not carried out when the hole is formed, therefore the degree of compaction of the earth among the piles is greatly enhanced, simultaneously, when the pile body concrete is cast, no hole collapse phenomenon of the outer pipe appears in the hole, even slurry wall protection is not required to be adopted, in addition, no bottom settlings exists at the bottom of the pile, thereby the characteristic that the bearing capacity of a single pile is high is ensured, and the invention has the advantages of no pollution on site and quick construction speed.

The invention relates to a mining cambered anti-impact sealing wall. Before the wall is manufactured, a slot is formed in a position where a tunnel is needed to be sealed; the slot is continuously distributed along left and right tunnel walls of the tunnel, a top plate and a bottom plate; the slot is 500 mm in depth and 500-800 mm in width. According to a direction where air billows come, the mining cambered anti-impact sealing wall comprises a stream guide layer, a filling layer, a cambered steel plate layer, a concrete sealing wall and a plane steel plate layer from inside to outside in sequence, wherein each layer reaches to the slotting borders of the left and right tunnel walls, the top plate and the bottom plate.

The present invention is ceramic tile forming equipment and method. The equipment has material feeder to feed material to the belt conveyer; press with upper and lower punching heads; belt conveyer set between the upper and the lower punching heads; and sliding mold frame of rigid material set between the upper and the lower punching heads. The sliding mold frame may be made to move in the axial direction of the punching heads. The present invention makes it possible to produce ceramic tiles of different thickness for different decoration methods.

The invention provides a hot-stamping die for an anticollision beam, comprising an upper die and a lower die, wherein the upper and lower dies mainly comprise combined convex/concave dies, cooling systems and a cooling seal ring. The blocks of the combined convex/concave dies avoid the corners and are staggered relatively. The cooling systems adopt drill holes, wherein the diameter of the holes is 8-30mm and the peaks of the holes are 3-10mm distant from the profiles; the two ends of the holes are sealed after hole drilling; runway type water troughs are processed near the places where the block dies are 10-50mm distant from the two end faces; the cooling water enters from one water trough and flows out of the other water trough; and seal grooves are arranged on the cooling water troughs and the cooling water troughs are provided with the seal ring and are externally connected with cooling water pipes.

The invention discloses a novel alkali-activated cementitious material for 3D printing. The novel alkali-activated cementitious material for the 3D printing is prepared from following raw materials inpercentage by weight: 20%-46% of ground granulated blast furnace slag, 7%-22% of nickel iron slag, 7%-14% of lithium slag, 7%-14% of red brick powder, 2%-3.5% of a solid alkali activator, 0.3%-0.7% of attapulgite, 0.3%-0.7% of bentonite, 0.07%-0.14% of plant fiber and 28%-31% of water. The novel alkali-activated cementitious material for the 3D printing has good workability, has good cohesive property and high stability due to the characteristics of quick setting, rapid hardening and early strength and completely meets the material performance requirement of the 3D printing technology.

The invention discloses a reusable welded hydraulic cover of a boiler and a pressure vessel and a manufacturing method of the reusable welded hydraulic cover. In a hydraulic test in the conventional product factory for the boiler and the pressure vessel, the hydraulic cover which is formed by assembled welding of large-diameter welding pipes of a welding groove on a construction site serves as a welding temporary pressed element; the hydraulic cover is generally formed by oxygen-acetylene cutting of a steel plate; the stressed condition of a flat welding structure of the steel plate is poor; and the steel plate is thick and heavy and usually disposable so as to cause great waste. The welded hydraulic cover of the boiler and the pressure vessel comprises a cover (1), wherein hydraulic allowance (2) is formed at the lower end of the cover. The invention is applied to manufacturing of the boiler and the pressure vessel.

The invention relates to an oil bushing steel and the manufacturing process thereof, wherein, the chemical composition of the steel is as follows: 0.28wt percent to 0.35wt percent of C, 0.1wt percent to 0.4wt percent of Si, 0.8wt percent to 1.6wt percent of Mn, 0.4wt percent to 0.6wt percent of Mo, 0.8wt percent to 1.2wt percent of Cr, 0.05wt percent to 0.10wt percent of V, less than or equal to 0.005wt percent of S, 0.01wt percent to 0.04wt percent of Al and the rest, Fe and other inevitable impurities; the manufacturing process of the steel is as follows: the tube blank made by continuous casting or continuous rolling is perforated by a perforator after heating in a heating furnace and is under tube rolling under 950 DEG C to 1,050 DEG C; the tube blank is fed into a reheating furnace after releasing from a rod and then is fed into a tension-reducing mill or a stretcher after holding under 800 DEG C to 1,000 DEG C for air cooling after rolling; finally, after holding under 860 DEG C to 1,000 DEG C and quenching, the tube blank is under tempering under 600 DEG C to 660 DEG C holding to be made into production tube. The steel has excellent hardenability and higher structural stability and can ensure that an oil well oil bushing not only can obtain 1,000MPa to 1,200MPa yield strength, but also can meet the requirements of more than 70J transverse ballistic work and more than 90J ballistic work.

The invention discloses a gun hole charging and plugging device which comprises a disc and a head rod detachably connected with the disc. The disc comprises a tray, fins and a center through hole. The fins are arranged in the mode of surrounding the outer wall of the tray and have elasticity and toughness, and the center through hole is formed in the center of the tray. The fins can be inserted into a gun hole, and the outer diameter of the fins is larger than that of the gun hole. The fins are provided with anti-skid structures capable of being clamped and fixed to the wall of the gun hole. The bottom of the tray is provided with a connection port in butt connection with the head rod. The problem that a cartridged explosive slides when being charged into an upward hole is effectively solved, the non-coupling charging structure is actually achieved, interval charging can be achieved, accordingly, the oversized fragment output rate is effectively reduced, blasting vibration is reduced, and safety and stability of sinking and driving engineering are maintained. In addition, the explosive consumed cost is reduced, the workload of workers is reduced, and the device plays a quite important role in developing enterprises, reducing the operation cost and improving productivity.

The machining process of engineering machinery wheel assembly includes the following steps: cutting strip material in the width of even number times the required assembly width; rolling to form the required sizes and shape; rounding to form cylinder; butt welding; and cutting to form even number assemblies. The symmetrical machining process has balanced outer forces, no torque and good forming effect as well as high production efficiency and low cost, and is especially suitable for mass production.

The invention discloses an offshore platform hydraulic self-lifting device which comprises an upper support, a lower support, a sleeve assembly, a body, support body and a hydraulic system. The sleeve assembly comprises a sleeve. A plurality rows of circular holes are axially formed on the wall of the sleeve. Each row of circular holes comprises two symmetrical circular holes. At least two keyways are axially formed on the inner wall of the sleeve. The top of the sleeve is connected with the upper support. The body comprises a base pipe nested into a cavity of the sleeve. At least two guide grooves are formed on the outer wall of the base pipe. Wire guide grooves matched with the keyways can slide along the guide grooves. The bottom of the base pipe is connected with the lower support. The support body comprises a base block disposed on the upper portion of the base pipe and two support pins. The base blocks disposed in a cavity of the base pipe is connected with the base pipe. The support pins are connected with the base blocks. The pin bodies of the support pin penetrate the base pipe to be matched with the circular holes of the sleeve. The hydraulic system comprises at least two symmetric hydraulic cylinders which are connected to a main oil pump through multi-path reversing valves. The bottom of each hydraulic cylinder is connected with the lower support, and the top thereof is connected with the upper support.