63 results about "Steel design" patented technology

The invention provides an X52 pipeline steel hot-rolling coiled plate with a super-thick specification and a production method for the same. Steel contains, by weight, the chemical ingredients including 0.060%-0.070% of C, 0.15%-0.25% of Si, 1.40%-1.50% of Mn, 0.034%-0.050% of Nb, 0.008%-0.022% of Ti, 0.11%-0.17% of Cr, 0.015%-0.045% of Al, P<=0.02%, S<=0.008%, N<=0.008%, Pcm<=0.17%, and the balance being Fe and inevitable impurities. The plate and the production method provided by the invention have the beneficial effects that the X52-grade pipeline steel designed with C-Mn-Nb-Cr series is used; the thickness specification exceeds 20mm; product alloy design is economic and rational; technological paths are simple and easy to execute; production efficiency is high; well-closed formation inthe thickness direction is ensured; and toughness is very high.

The invention discloses a steel structure welding seam generating method. In the prior art, all welds cannot be obtained directly from a three-dimensional model. The method includes the following steps of first, obtaining design information of a steel part; second, determining the number and position of welds; third, generating all welds in a steel structure designing software; fourth, determiningwelding sequence; fifth, generating a three-dimensional weld map; and sixth, calculating the consumption of welding materials. The method can automatically determine which steel parts in a steel component need to be welded, and the determining speed is fast and the result is accurate and reliable. The method can quickly obtain the information required for welding and generate all welds in a three-dimensional model. The method can automatically determine the welding sequence of the welds and further guide the welding production. The method can generate the three-dimensional weld map, and the three-dimensional weld map can be used as references and descriptions when workers perform welding. The method can guide the purchase amount of the welding materials and reduce the production cost.

The invention discloses a detection fixture for tensile testing of steel wires, wherein the detection fixture comprises a main body part, a fixed block, and a limiting stopper, wherein the fixed block and the limiting stopper are fixed and oppositely arranged on the main body part; an actuating space is formed between the fixed block and the limiting stopper; a clamping head is arranged in the actuating space; a gripping surface is arranged on one side of the clamping head, facing to the fixed block; the gripping surface is corrugate; a screw hole is formed in the limiting stopper; a threaded rod is rotationally arranged in the screw hole; one end of the threaded rod is fixed with the clamping head, and an adjusting handle is fixed at the other end of the threaded rod. According to the detection fixture for tensile testing of the steel wires, a transitional tensile design is adopted, so that the phenomenon that broken ends of steel wires of fine sizes in the tensile testing are positioned in the fixture is avoided to not give rise to invalid testing results; besides, the clamping head adopts toothed and wear-resisting stainless steel design, so that the steel wire is prevented from slipping when clamped by the fixture in the process of tensile testing.

The invention discloses a surface-mounted permanent magnet motor structure, and belongs to the technical field of motor design. The surface-mounted magnetic steel design provided by the invention belongs to a partially embedded magnetic steel arrangement mode and has a great difference from a general magnetic steel arrangement mode in design emphasis. The structure comprises a stator iron core and a stator winding connected with the stator iron core. A rotor iron core is arranged between the stator iron core and a shaft. The magnetic steel and a welfless band are arranged between the rotor iron core and the stator iron core. Rotor end plates are arranged at two transverse sides of the rotor iron core. Self-cooling centrifugal fan blades are arranged on the rotor end plates. Two sides of the rotor iron core axially close to the shaft are equipped with rotor tensional fastening elements. The structure is simple in structure and low in cost and is suitable for mass production. According to the structure, the motor is ensured to have good speed regulation characteristic and operation reliability.

The invention relates to the technical field of steel structure design, in particular to an assembled steel structure house. The house comprises a housetop, a house bottom, stand columns and wallboards, wherein the housetop and the house bottom are both horizontally arranged, the house bottom is located at the bottom end of the housetop, the plurality of stand columns are vertically arranged, eachstand column is arranged between the housetop and the house bottom, a corresponding inserting assembly is arranged between the bottom end of each stand column and the house bottom, a corresponding connecting assembly is arranged between the top end of each stand column and the housetop, the corresponding wallboard is vertically arranged between every two adjacent stand columns, installation assemblies are arranged between the wallboards and the stand columns correspondingly, and the top ends and the bottom ends of the wallboards abut against the housetop and the house bottom correspondingly.According to the house, the house is disassembled and transported during transportation, compared with overall transportation of the house, the occupied space of the house is reduced, and an effect ofimproving the carrying efficiency of the house is achieved.

The invention relates to a production process of a non-tempered ocean engineering structure with steel grade over 360MPa. A low-carbon high-niobium steel design is adopted by the process, a non-tempering process adopting thermal mechanical rolling is adopted, and a non-tempered ocean engineering structural tube with steel grade over 360MPa is realized by modifying a rolling production line. Compared with the conventional offline tempering (quenching and tempering) thermal treatment process, the non-tempering treatment process adopting thermal mechanical-controlled rolling can be used for effectively reducing the cost of the thermal treatment process by 600-800 Yuan / ton; and more importantly, the yield can be greatly released, and market competitiveness at home and abroad of the domestic enterprises is effectively improved.

The invention relates to the technical field of steel structures, and discloses a multifunctional machining platform for steel structure design and machining. The multifunctional machining platform can be used for freely bending a steel structural member at an adjustable angle and carrying out butt-joint adjustment at different angles on a steel structure. According to the multifunctional machining platform for steel structure design and machining, a clamping sliding frame is driven by a clamping screw to move along a fixed sliding rail, the clamping sliding frame drives a clamping frame to move along a linear bearing, the clamping frame drives a contact base to clamp and fix the steel structure, then a single-tooth gear drives a feeding gear to rotate, the feeding gear drives a rubber ring to rotate, the rubber ring drives the steel structural member to move, and therefore the effects that automatic self-centering clamping and fixing are conducted on the steel structure, automatic butt joint is conducted on the steel structural member, inaccurate butt joint caused by manual fixing is avoided, working dangerous factors such as worker scalding are avoided, and meanwhile circumferential overturning and circumferential sealing machining can be conducted are achieved.

The invention relates to an automatic optimization design method and system for a modular steel frame building structure. The system comprises the steps: establishing a building structure digital model according to size information of the modular steel frame building structure, and endowing the digital model with a structure type and an initial structure model; transmitting the digital model data to calculation software for building structure stress analysis; performing automatic optimization design on the modular steel frame building structure according to a building structure stress analysis result, a steel structure design specification and a steel structure database, and updating the digital model according to an automatic optimization design result; and feeding back the optimized modular steel frame building structure design information to a building information model platform and generating a corresponding visual model. The automatic optimization design program is integrated into the digital modeling process, the design of the modular steel frame building structure can respond to project information change in real time, the optimal design scheme is automatically determined, and project participants can conveniently coordinate work arrangement in time.

The invention provides an ultrahigh-strength stainless steel design method based on machine learning under guidance of physical metallurgy, and relates to the technical field of steel and iron material design. The method comprises the following steps: firstly, acquiring data, and dividing the data into a training set and a test set by adopting a multiple-leaving method; establishing an ensemble learning algorithm model based on physical metallurgy guidance according to the training set; taking the ensemble learning algorithm model of which the correlation coefficient is greater than 90% as a target function in the genetic algorithm; wherein the genetic algorithm is used for optimizing design components and process to obtain the ultrahigh-strength stainless steel, and designing the components and heat treatment conditions of the stainless steel; and classifying and screening a large number of obtained design results by adopting an SVC classifier, and outputting components, processes andhardness of typical alloys of the design results. According to the method, the generalization ability of the model can be improved, the design is more efficient, and the design result better conformsto the physical metallurgy principle.

The invention discloses a hydrological buoy emergency detecting device. The hydrological buoy emergency detecting device comprises a hydrological buoy emergency detecting device body, a hydrological buoy emergency detecting device body is provided with a hydrological buoy monitoring device bottom compartment, and the hydrological buoy monitoring device bottom compartment is provided with a protective mechanism; and a tail pipe of the hydrological buoy monitoring device bottom compartment is connected to the bottom of the hydrological buoy monitoring device bottom compartment. The hydrologicalbuoy emergency detecting device has a compact structure, simple operation and a practical function, a platform is conveniently provided for hydrological detection and data transceiving, meanwhile, thehydrological buoy emergency detecting device has better protection measures to enable the service life of the hydrological buoy emergency detecting device to be prolonged, the maintenance costs are reduced, the hydrological buoy emergency detecting device can conveniently detect important data in hydrological monitoring of water areas in which the hydrological buoy emergency detecting device is,the stainless steel design of a buoy shell can prevent the damage of the detecting device caused by oxidative corrosion, a solar power supply endurance mode is environmentally friendly, the power is continuously supplied, and energy sources are saved.

The present invention relates to the technical field of steel structure design, in particular to a steel structure support frame, which includes a steel beam and a steel column, two steel columns are arranged vertically, and one steel beam is arranged horizontally, and the steel column includes an upper column and a steel column. The lower column, the upper column and the lower column are all set vertically, the bottom of the lower column is fixedly connected to the ground, the upper column is located at the top of the lower column, and an adjustment component is arranged between the upper column and the lower column, and the top of the upper column is connected to the steel beam Fixed connection, the steel beam is equipped with a tilt detection device. In the present invention, when uneven subsidence occurs on the ground at the bottom ends of the two steel columns, the position of the upper column and the lower column is adjusted by using the adjustment assembly, so that the top ends of the two steel columns are located in the same plane, so that the two steel columns drive the steel beam It is in a horizontal state, so as to avoid the overall tilt of the factory building, and has the effect of improving the service life of the steel structure factory building.

The invention discloses an automatic pool cleaner for aquaculture systems as well as relevant structures and preparation methods. The invention resolves the problem in indoor high-density aquaculture systems that remaining baits, shits and small dead bodies, as well as other relevant solid pollutants, on the pool bottom cannot be removed. The invention can fulfill indoor aquaculture and make the indoor aquaculture safer and more reliable; a running track design makes the pool moved stably along the track as design requirements; an oblate sewage suction port can expand sewage suction areas; a strong driving light close to the sewage suction port can prevent aquaculture livings from being sucked into a sewer pipe, and meanwhile, provide sufficient light source for an underwater cemera system; a time controller and a manual control device can conserve electric power consumption because of continuous operation, and execute multiple rounds of cleaning for areas with more impurities; a full stainless steel design can guarantee strength and durability; auxliliary underwater cameras and a water quality monitor can realize real-time test on all kinds of situations on the whole pool bottom; the function can make aquaculture personnel more directly know problems coming about during the aquaculture process, so as to perform quicker aquaculture regulation, control and disease control.

The invention discloses a cold-bent thin-walled steel-keel combined shear wall with steel skin, comprising a cold-bent thin-walled steel-keel framework and wall panels on two sides of the keel framework. The wall panels on the same side of the cold-bent thin-walled steel-keel framework include at least two layers, the steel skin as high as the wall panels is fixedly clamped between the adjacent layers of wall panels. The wall panels, the steel skin and the cold-bent thin-walled steel-keel framework are interconnected through penetrating of tapping screws. By adding the layer of steel skin, lateral capacity and rigidity of the wall are improved; compared with existing walls, the wall is added with building panels, has significant improvement in thermal insulation, acoustic insulation and fire proofing and is free of cold bridge effect.

The invention belongs to the technical field of steel grating processing and production, and particularly relates to a computer-aided steel grating product information intelligent identification and statistics technology. A steel grating is a special customized product, and the number of steel gratings and related parts such as skirting boards and antiskid strips must be evaluated and counted according to a steel structure design drawing or a building construction drawing, Thus, better materal preparation and production organization can be achieved. According to a traditional method, manual recognition and calculation are conducted according to the basic size on a steel structure design drawing or a building construction drawing provided by a client, a statistical table is input, and if drawing size data is missing, guessing can only be conducted. Compared with the traditional method, the method disclosed by the invention has the advantages that the steel grating is directly recognizedon the steel structure design drawing or the building construction drawing provided by a user, necessary components are added according to requirements, the statistical table is automatically generated, and the working efficiency of steel grating evaluation and the statistical accuracy are greatly improved.

The invention relates to hot-rolled inequilateral channel steel. The hot-rolled inequilateral channel steel comprises a web and wing plates, wherein the wing plates comprise a first wing plate and a second wing plate; two ends of the web are connected with the first wing plate and the second wing plate respectively; the first wing plate and the second wing plate are located on the same side of the web, are parallel to each other and perpendicular to the web; and the height of the first wing plate is larger than that of the second wing plate. According to the hot-rolled inequilateral channel steel, the first wing plate and the second wing plate adopt an inequilateral design, the first wing plate is higher than the second wing plate by 5-30 mm, so that in combination production of a forklift truck gantry and under the same bearing capacity, steel material consumption is reduced, dead weight of a gantry system is reduced wholly, and the manufacturing cost of the gantry is reduced; and meanwhile, due to the inequilateral channel steel design, the inequilateral channel steel is attractive in appearance, not easy to deform and higher in bending resistibility, stable running of the roller is guaranteed, friction period between the roller and section steel is prolonged, and the service life of the channel steel is prolonged.

The invention discloses multifunctional assembling equipment for an assembly type steel structure in a tunnel. The multifunctional assembling equipment comprises a moving unit, a supporting unit and an assembling unit; the supporting unit comprises supporting parts and sliding parts; the supporting parts are respectively arranged at the front and rear ends of the moving unit and at least can telescopically move up and down; the sliding parts are arranged at the bottom of the supporting parts; the assembling unit is arranged on the moving unit. According to the scheme, the supporting units capable of sliding are arranged for the moving units of the assembly equipment, the running stability of the chassis of the assembly equipment can be improved, and then the problems that existing assembly equipment is poor in on-load lifting running stability and prone to overturning during on-load lateral movement are solved, and therefore, the construction safety of the fabricated steel structure in the tunnel is improved. Meanwhile, according to the scheme, through the flexible assembling units designed for the straight wall type steel structures and the arch-shaped steel structures, the problems that according to existing assembling equipment, the assembling efficiency of the steel structures in the narrow and small space of the tunnel is low, and the grabbing adaptability is poor are solved.

The invention belongs to the technical field of steel structure design and manufacture in the civil engineering industry, and particularly relates to a steel support for overlapped tunnels. The steel support for the overlapped tunnels is characterized in that the steel support mainly consists of multiple identical support systems and rails; the multiple support systems are parallelly arranged on the rails; each support system is of a round structure, and the lower part of each support system is provided with single-rim wheels which are located on the rails; every two adjacent support systems are fixedly connected through a plurality of connection parts; the lower part of the support system at the outermost side is provided with rail lock catches which are connected with the support system through hydraulic oil cylinders which are horizontally arranged; and the rail lock catches are fixedly locked on the rails. The steel support for the overlapped tunnels has the characteristics of being low in cost, easy for manufacture and disassembly and the like; besides, compared with tunnel support equipment in the prior art, the steel support is advantaged in that a tunnel segment with a larger area can be protected, and especially, the effect for protecting a tunnel segment at the lower part is better.

The invention discloses a novel derusting device for design and processing of a fabricated steel structure, and belongs to the technical field of derusting of steel structures. The novel derusting device comprises two arc-shaped supporting plates and two elastic arc-shaped connecting plates. Supporting rods rotate to drive cleaning brushes to brush and clean rust on the inner wall of steel, so that the inner wall of the steel can be kept clean, and the situations that the rust on the inner wall of the steel cannot be cleaned in time, consequently, the steel is continuously rusted, and therefore the service life of the steel is shortened, and the use stress strength is reduced are avoided. A moving frame is driven to move once when every two supporting rods rotate and pass through rolling wheels, so that the cleaning area of the cleaning brushes is larger than the moving distance of the moving frame, and the situation that the inner wall of the steel cannot be completely cleaned due to the fact that the moving frame moves too fast is avoided. In the rotating process of the supporting rods, the supporting rod acts on air bags to collect the cleaned rust slag on the inner wall of the steel, and the situation that the residual rust slag affects assembly of workpieces is avoided.

The invention relates to a steel structure anchor block formed through connection of box iron and water supply and return fixed joints and a box iron calculation method. The anchor block is characterized in that the water supply fixed joint and the water return fixed joint are fixedly connected to be a whole through the four box iron, wherein the four box iron are welded to the tops and the bottoms of a water supply connection pipe and a water return connection pipe in a crossing mode, and located on the two sides, in the longitudinal directions of pipelines, of a water supply annular plate and the water return annular plate. Each box iron is set in a mode that one side box wall of each box iron is attached to the side face of the water supply annular plate or the water return annular plate, and the box bottom of each box iron is attached to the pipe body position of the water supply connection pipe or the water return connection pipe. Vertical box iron bodies serving as rib bars are additionally arranged between the box iron. The calculation method of the box iron specifications comprises the steps that (1) thrust of the fixed joints of a water supply pipeline and a water return pipeline are calculated according to "Urban Heat Supply Direct Burial Hot Water Pipeline Technical Regulations" CJJ / T81-2013; (2) a bending moment generated by the thrust borne by the water supply fixed joint at a box iron welded point to a water return fixed joint box iron welded point is calculated; and (3) the box iron specifications are determined according to Steel Structure Design RegulationsGB50017-2003; and a whole stability requirement and a partial stability requirement of the box iron are testified.

The invention relates to the technical field of a material yard windshield and dust suppression wall of raw materials stacked in open air of a factory, in particular to a material yard windshield anddust suppression wall consisting of a foundation cushion, a windshield wall body, a windshield plate steel structure support, a windshield plate and a spray device. The concrete construction method comprises five steps of foundation cushion construction, windshield wall body construction, windshield steel structure support installation, windshield plate installation and spray device installation.The windshield and dust suppression wall can effectively reduce wind speed, attenuate turbulence, contain dust and control dust pollution, the wind pressure is 55 kg / m<2>, the seismic fortification intensity is 8 degrees, the foundation and steel structure design service life is 50 years, and the windshield plate service life is 20 years. The bottom area of the cushion is large, the bearing capacity is high, and the resistance to terrain deformation is high; the windshield wall body has high bearing capacity; the windshield plate is fixed by a rigid structure support, is anti-static, flame-retardant and anti-ultraviolet, the turbulence degree of wind is reduced, and the eddy current of the incoming wind is eliminated; the shear stress and pressure on the surfaces of the raw materials are reduced, so that the dust rate of a material pile is reduced; and spray atomization water can effectively control dust.

The invention discloses a composite door. The composite door comprises an outer frame, an outer steel plate, an expanded perlite door core plate, a metal cellular board, an inner steel plate, a lock frame and an anti-theft lock, wherein the outer steel plate is fixedly installed on a frame of the outer frame through bolts, the expanded perlite door core plate is connected to the inner side of theouter steel plate through adhesive, the metal cellular board is fixedly connected to the frame of the outer frame through bolts, the inner steel plate at the inner side of the metal cellular board andthe outer steel plate are fixedly installed, and the anti-theft lock is installed on the lock frame. According to the composite door, structural improvement is conducted on the basis of an original anti-theft door, the structural strength of a door body is improved by means of the inner and outer steel plate design, the expanded perlite door core plate is good in heat resistance, the metal cellular board is welded with aluminum alloy and installed through the frame structure, the structural strength of the frame structure is improved by means of installation and design of staggered reinforcing ribs, the inner and outer steel plates and the expanded perlite door core plate are designed in a separating mode, which is beneficial for structurally refitting the anti-theft door in the later period.

The invention relates to the technical field of steel structure machining equipment, and discloses a rust removal device for assembly type steel structure designing and machining. The device comprisesa rack, wherein a first servo motor is fixedly installed at the bottom of the inner wall of the rack, an output shaft of the first servo motor is sleeved with a first synchronous wheel, and a transmission roller is movably mounted on the position, located above the first servo motor, in the rack, and the outer wall of the transmission roller is sleeved with a second synchronous wheel. According to the rust removal device for assembly type steel structure design and machining, the first servo motor is started through a control panel, the first servo motor drives the second synchronous wheel and the transmission roller to rotate through the first synchronous wheel and a synchronous belt, the transmission roller drives a to-be-machined steel structure to be conveyed rightwards, then a secondservo motor is controlled to be started through the control panel, the second servo motor drives a grinding wheel to rotate through an output shaft and conducts polishing and rust removal on the to-be-machined steel structure, and the simple, convenient, efficient and automatic rust removal effect is achieved.

The invention discloses an aviation training bomb with an infrared target. The aviation training bomb comprises a rotary wing firing pin, a projectile body, a smoke light pipe, an empennage, an infrared target source and a safety mechanism. The rotary wing firing pin is installed at the forefront end of the aviation training bomb and is connected to the bomb body through a pin shaft; the smoke light pipe is arranged inside the bomb body; the empennage is welded to the tail conical surface of the bomb body; an infrared target source is fixed at the tail part of the bomb body through a pin shaft; one end of the safety mechanism is inserted into the rotary wing firing pin, one end of the safety mechanism is inserted into the infrared target source, and a mounting interface fixedly connected to a carrier is reserved at one end of the safety mechanism; and the outer surface of the aviation training bomb is coated with an infrared coating. The aviation training bomb has the beneficial effects that by adding the infrared target source, the actual combat training requirements of users in all days, especially complex environment conditions can be met; the full-steel design is adopted, the manufacturing precision is high, and the stable streamline low-resistance pneumatic appearance is achieved; and the process is mature, the cost is low, and the aviation training bomb is suitable for mass production.

The invention relates to the technical field of steel structure design, in particular to a steel structure supporting frame. The supporting frame comprises a steel beam and steel columns, wherein thetwo steel columns are vertically arranged, the steel beam is horizontally arranged, the steel columns comprise upper columns and lower columns correspondingly, the upper columns and the lower columnsare all vertically arranged, the bottom ends of the lower columns are fixedly connected with the ground, the upper columns are located at the top ends of the lower columns correspondingly, adjusting assemblies are arranged between the upper columns and the lower columns correspondingly, the top ends of the upper columns are fixedly connected with the steel beam, and an inclination detecting deviceis arranged on the steel beam. According to the supporting frame, when differential settlement happens to parts, at the bottom ends of the two steel columns, of the ground, the adjusting assemblies are used for adjusting positions of the upper columns and the lower columns, the top ends of the two steel columns are located in the same plane, and the two steel columns drive the steel beam to be ina horizontal state, so that a factory building is prevented from integrally inclining, and an effect of prolonging the service life of the steel structure factory building is achieved.

The invention discloses a fire-resistant energy-saving steel structure which comprises a supporting column, a connecting column, a supporting frame, a supporting structure and a connecting assembly, the connecting column is of an I-shaped rod-shaped structure, a fastening cavity is formed in the connecting column in the axis direction of the connecting column in an extending mode, and positioning grooves are formed in the I-shaped outer side edge of the supporting column at equal intervals. A supporting structure is arranged at the positioning groove, and connecting assemblies are installed at the two ends of the supporting column. The connecting assembly comprises a connecting block, a protruding column and a protruding plate, the connecting block is of an I-shaped block structure, the protruding column is fixed to one side edge of the connecting block, the protruding column is of a rectangular block structure, fastening holes are formed in the two ends of the protruding plate and the two ends of the connecting column, and the protruding plate and the connecting column are fixed through fastening bolts. The fireproof and energy-saving steel structure is reasonable in design, capable of improving the whole and edge supporting effect of the middle section of the steel structure, convenient to install and suitable for application and popularization.

A composite structural support which may be utilized as a beam or assembled with similar supports to form a building floor or a bridge deck utilizes an open core element, made preferably of suitably treated fluted paper, upper and lower thin steel skins, and a layer of concrete poured over the top skin. Modules comprising the hollow core element and the upper and lower steel skins are fabricated to lengths required for building floor and bridge spans and, when joined by welding the upper and lower skins of adjacent elements along their full lengths, provide a floor or deck structure of a large span

The invention discloses a steel structure welding seam generating method. In the prior art, all welds cannot be obtained directly from a three-dimensional model. The method includes the following steps of first, obtaining design information of a steel part; second, determining the number and position of welds; third, generating all welds in a steel structure designing software; fourth, determiningwelding sequence; fifth, generating a three-dimensional weld map; and sixth, calculating the consumption of welding materials. The method can automatically determine which steel parts in a steel component need to be welded, and the determining speed is fast and the result is accurate and reliable. The method can quickly obtain the information required for welding and generate all welds in a three-dimensional model. The method can automatically determine the welding sequence of the welds and further guide the welding production. The method can generate the three-dimensional weld map, and the three-dimensional weld map can be used as references and descriptions when workers perform welding. The method can guide the purchase amount of the welding materials and reduce the production cost.

The invention provides a moon pool rail manufacturing method. The moon pool rail manufacturing method includes the following steps that according to the size design requirements, various parts of a moon pool rail are produced, wherein the parts include first angle steel, a round pipe, main struts, auxiliary struts and diagonal struts; several position points are marked on the round tube, and corresponding marking lines are drawn; more than 3 main struts with one arc-shaped ends are manufactured, the two end points of the arc edges of the main struts are welded to the round pipe along the marking lines on the round pipe, and the main struts are welded to the round pipe at an equal distance; the first angle steel is welded to the round pipe along the marking lines on the round pipe; more than six auxiliary struts are manufactured, the auxiliary struts are welded to the two sides of the main struts along the marking lines on the round pipe correspondingly; and the diagonal struts are installed. The first angle steel designed by the moon pool rail manufacturing method is matched with a sliding-moving device on a diving bell, and the problem of retracting and putting of the diving bellis successfully solved; and the moon pool rail is further provided with the main struts, the auxiliary struts and the diagonal struts for supporting the first angle steel to enable the moon pool railto be more stable.

The invention discloses a high-altitude connected steel structure. The structure comprises a first connected steel structure body, mounting assembles, a connecting piece, a second connected steel structure body, a first steel beam and a second steel beam, wherein the bottom end of the first connected steel structure body is connected to the top end of the second connected steel structure body through the mounting assemblies and the connecting piece, a channel is formed inside the connecting piece, the top end and the bottom end of the connecting piece are fixedly connected to the mounting assemblies through first bolts, the two mounting assemblies are arranged, each mounting assembly comprises a first matching part, a supporting part and a second matching part, the bottom ends of the firstmatching parts are fixedly connected to the top ends of the supporting parts, the top ends of the second matching parts are fixedly connected to the bottom ends of the supporting parts, and the firstmatching parts and the second matching parts are positioned in the first connected steel structure body and the second connected steel structure body respectively. The high-altitude connected steel structure is reasonable in design and capable of improving the stability of the connected steel structure after being installed.