36results about How to "Welding quality is easy to guarantee" patented technology

The invention discloses a shear-type stiffened metal damper, which comprises an energy-dissipating steel plate, stiffening ribs are respectively arranged on the left and right sides of the energy-dissipating steel plate, horizontal connecting steel plates are respectively arranged on the upper end and the lower end of the energy-dissipating steel plate, Flange plates are arranged at the front end and rear end respectively, the stiffeners on the left side and the right side of the energy dissipation steel plate are arranged symmetrically or asymmetrically, and the stiffeners on the same side of the energy dissipation steel plate are arranged without crossing. The invention utilizes the advantages of relatively large initial rigidity when the steel plate is stressed in the plane, and prevents the buckling of the energy-dissipating steel plate by means of stiffening, thereby ensuring the energy-dissipating capacity and stability of the damper; There are no cross welds, and the stiffeners can be set in full length without truncating, which is convenient for welding, and the welding quality is easy to guarantee.

The invention discloses a ring set welding tool. The ring set welding tool comprises a work platform connected to a machine frame, the work platform is provided with an annular groove, an annular protrusion of an outer ring is inserted into the annular groove, the work platform is provided with an outer ring fixture, the machine frame is further provided with a support, the support is driven by a vertical power mechanism to slide vertically, located above the work platform, and is rotationally connected with a supporting arm extending downwards, the supporting arm is provided with an inner ring fixture, and an inner ring locating mechanism is arranged between the downward-extending end of the supporting arm and the work platform. The ring set welding tool has the advantages that an inner ring and the outer ring can be effectively clamped.

The invention relates to a fabricated corrugated web steel box-UHPC composite beam bridge and a construction method thereof, the fabricated corrugated web steel box-UHPC composite beam bridge is composed of corrugated web steel boxes and UHPC bridge deck slabs, each corrugated web steel box is of an open box-shaped structure composed of a flat steel bottom plate, corrugated steel webs and a flat steel top plate, and the adjacent corrugated web steel boxes are connected through cross beams between the boxes; the UHPC bridge deck slabs comprise in-box prefabricated UHPC bridge deck slabs, inter-box prefabricated UHPC bridge deck slabs and cantilever cast-in-place UHPC bridge deck slabs, and the adjacent prefabricated UHPC bridge deck slabs are connected through cast-in-place wet joint UHPC bridge deck slabs; and the multiple UHPC bridge decks are correspondingly installed on the multiple corrugated web steel boxes to form the assembly type corrugated web steel box-UHPC composite beam bridge. According to the fabricated corrugated web steel box-concrete composite beam bridge, the steel consumption configuration is optimized, the self-weight of the structure is further reduced, the prefabricated concrete bridge deck is adopted, the fabricated degree is further improved, the construction period is short, the standardization degree is high, remarkable economic and social benefits areachieved, and the fabricated corrugated web steel box-concrete composite beam bridge has important significance in promoting large-scale application of steel structure bridges.

The invention relates to a start-up heating furnace coil pipe production method of a synthetic ammonia device. The start-up heating furnace coil pipe production method includes welding and installing materials straight pipes one by one, and then processing the welded and installed straight pipes into coil pipes by a spiral coiler. Compared with the existing method of producing single coil pipe and then welding and installing, the start-up heating furnace coil pipe production method of the synthetic ammonia device greatly improves processing quality and working efficiency, and reduces production cost.

The invention relates to an electric block type double-rail and single-main-beam crane. The electric block type double-rail and single-main-beam crane comprises a main beam. An upper wing plate is welded to the top of the main beam. Webs are welded to the lower surface of the upper wing plate. Traveling rails are arranged at the lower ends of the webs. An upper wing plate strengthening plate is welded between the upper wing plate and the webs. Web strengthening rib plates are welded between the upper wing plate strengthening plate and the webs. An electric block is installed in the main beam and connected with an electric block base. A trolley frame is connected with the lower portion of the electric block base. The trolley frame is provided with walking devices which are internally provided with walking wheels. The walking wheels are connected with drive motors, and the electric block is connected with a pulley block. The pulley block is connected with a lifting hook. Buffering devices are arranged at the front end and the rear end of the trolley frame. Limiting devices are arranged at the lower portions of the front end and the rear end of the main beam. The electric block type double-rail and single-main-beam crane has the beneficial effects of being reasonable in design, simple in structure, convenient to detect and maintain, large in lifting height, good in lifting performance, safe, reliable, stable in operation, long in service life and high in working efficiency.

Provided is a Q500qE high-strength bridge steel corner joint welding method. Two sides of a rib plate are provided with partially penetrated two-sided symmetrical grooves, groove angles are 48 degrees, and then the rib plate is vertically assembled and positioned on a base plate; during welding, an ER60Q solid wire and a CO2 gas shielded welding technology are firstly adopted to weld passes transversely, synchronously and symmetrically, and the rib plate is vertically fixed to the base plate; then, an H60Q submerged arc welding wire, an SJ105q submerged arc welding agent and an automatic submerged arc welding process are adopted to perform sequential filling of two sides of a ship's position and cover surface welding, and the angle of the ship's position is 45 degrees. According to the welding method integrating transverse gas shielded welding and ship's position submerged arc welding, preheating is not needed before welding, deformation correction is not needed after welding, formed welded appearance is attractive, and weld joints are internally reliable in performance, stable in quality, small in welding deformation and high in production efficiency. The Q500qE high-strength bridge steel corner joint welding method is suitable for welding of high-strength large and thick bridge steel plate units.

The invention provides a vertical assembling method for structural modules of a nuclear power plant. The vertical assembling method comprises the following steps that firstly, an assembly piece is disassembled with sub-modules as basic units, and the sub-modules are recombined and optimized, and the assembly sequence is determined; then, the placement position around an assembly platform of each sub-module in a site is determined according to the performance of a crane; the first two sub-modules are hoisted to the corresponding positions of the assembly platform; a scaffold is erected outsidethe sub-modules in place; the sub-modules in place are accurately measured and adjusted, the sub-modules are adjusted to the most ideal positions, and then assembling and welding-line welding are carried out; and similarly, the processes of hoisting of the next sub-module, erecting of a scaffold, accurate measuring and adjusting, assembling and welding-line welding are carried out, each follow-upsub-module is completed in sequence according to the assembly sequence, and the assembly advance route can generally be carried out symmetrically on both sides at the same time until all the sub-modules are assembled. The vertical assembling method greatly improves the assembling precision and quality of the structural modules of the nuclear power plant, the use of a large crane is avoid, and theeconomic performance is good.

The invention relates to the field of technologies for welding tubular piles, and particularly discloses a tubular pile welding production line which comprises welding devices. The tubular pile welding production line is characterized by further comprising a material translation manipulator for synchronously picking and shifting to-be-machined tubular piles; a tubular pile feeding rotary drum, a conveying lifting platform, a divisional straightening turntable, a flattening cabinet, a material turnover turntable, a welding positioning table, a discharging lifting table and a discharging rotary drum are sequentially arranged on a side of the material translation manipulator, the tubular piles can be upwardly hoisted by the conveying lifting table, required-to-be-welded connectors of the tubular piles can be correspondingly straightened by the divisional straightening turntable, the tubular piles can be flattened and welded by the flattening cabinet and can be turned over by the material turnover turntable, the turned tubular piles further can be welded by the welding positioning table, the welded tubular piles can be stacked by the discharging lifting table, the tubular piles can be delivered by the discharging rotary drum, and the welding devices are correspondingly arranged on a side of the flattening cabinet and a side of the welding positioning table. The tubular pile welding production line has the advantages that the tubular pile welding production line is simple and efficient in structural setting, tubular pile material welding working procedures are decomposed by the aid of the tubular pile welding production line, excessive manual participation basically can be omitted except for charging, the welding quality of products is easy to guarantee, and the production efficiency can be greatly enhanced.

The invention relates to a connecting structure of a skirt seat and a bottom sealing head. The connecting structure of the skirt seat and the bottom sealing head comprises an upper welding seam (1), aconnecting member (2), a skirt seat cylinder/transition section (3), a lower welding seam (4), the sealing head (5), a circumferential welding seam (6) and sealing head end excess materials (7). Theconnecting structure is compact in structure and small in welding seam cross-section size, required weld metal is only about 30% of a traditional bead welding type, the manufacturing method is simpler, the manufacturing period is short, processing excess materials can be utilized, the cost is low, the quality is reliable, and compared with the prior art, the defects of complex manufacturing process, more welding materials consumption, large welding workload, long period, high cost and the like are overcome to a great extent.

The invention relates to the field of bridge structure buildings, and particularly relates to a cable-stayed bridge girder connected with an anchor pulling plate. The cable-stayed bridge girder comprises a steel-concrete composite beam and an anchor pulling plate assembly which are connected, the steel-concrete composite beam comprises a top plate and an upper web which are connected, the anchor pulling plate assembly comprises the anchor pulling plate, the upper web is vertically connected to the end of the top plate, and the upper web extends out of the top plate and is in butt joint with the anchor pulling plate. According to the cable-stayed bridge girder, the structural form, stress, wind resistance and the like of the anchoring plate and the steel-concrete composite beam are comprehensively considered; the section form of the main beam structure, the connection mode of the main beam structure and the anchor pulling plate and the like are optimally designed; therefore, the adverseconditions of material waste, large construction hoisting weight and the like can be avoided, meanwhile, under the condition that the wind resistance of the bridge is guaranteed, the steel consumption and the construction cost are saved, butt weld joints are adopted between the anchor pulling plates and the upper web of the main beam, and the advantages of being better in stress, easier to guarantee the welding quality and the like are achieved.

The invention relates to a forming machine, and in particular relates to a helical blade forming machine which comprises a base, wherein the upper part of the left side of the base is sequentially provided with a helical blade draught device, a helical blade and shaft rotating device from left to right, the upper part of the right side of the base is provided with a helical blade and shaft supporting device matched with the helical blade and shaft rotating device, and a helical blade screw pitch regulating device is arranged on the base between the helical blade and shaft rotating device and the helical blade and shaft supporting device. The helical blade forming machine has a simple structure and a reasonable design, and is simple and convenient for welding and forming a helical blade, thereby labor intensity of workers is reduced, forming quality of the helical blade is ensured and production efficiency is increased.

The invention relates to a sealing device for hand holes of a circulating fluidized bed boiler header. The sealing device comprises a header body, wherein the hand holes are formed in the two ends of the header body. The sealing device is characterized in that a pipe connector and an end cover are connected in sequence outside the hand holes; one end of the pipe connector is hermetically connected with the peripheries of the hand holes; the pipe connector is hermetically connected with the periphery of an opening part of the end cover. The sealing device is simple in structure, low in manufacturing cost, good in sealing reliability, unlikely to leak and suitable for sealing the hand holes in the circulating fluidized bed boiler header.

The invention discloses a construction method for a goblet-shaped support super-long multi-layer horseshoe-shaped curved surface space steel structure. The steel structure adopts a plurality of large-dip-angle giant steel pipe column core tubes penetrating through a top plate of a basement to support a large-span asymmetric horseshoe-shaped multilayer truss, and the construction method comprises the following steps: 1) mounting a core tube; pre-burying and fixing steel pipe column foundation bolts through a positioning frame; adopting multi-space accurate positioning on a spatial special-shaped circular tube inclined column of the steel pipe column; adopting multiple-space accurate positioning in positioning and mounting of a large-span overweight steel box girder, and reserving an operation hole in a cover plate, wherein welding is facilitated, and the field welding quality of a butt joint opening of the steel box girder is improved; and 2) mounting a truss: splicing the truss on the ground through a positioning jig frame, integrally lifting the truss through a plurality of lifters mounted on the top of a steel tube column of the core tube, and carrying out butt joint on pre-mounted inward-extending cantilever brackets and outward-extending cantilever brackets on the core tube. The method can meet the field mounting requirements of the goblet-shaped support super-long multi-layer horseshoe-shaped curved surface space steel structure.