41results about How to "Convenient welding construction" patented technology

The invention discloses an assembled reinforced concrete beam-slab structural system with a cast-in-situ layer in a building structure. The assembled reinforced concrete beam-slab structural system comprises a superposed beam, a superposed slab, reinforcing mesh pieces, the cast-in-situ concrete superposed layer and beam negative reinforcements, wherein the superposed beam is a reinforced concrete precast beam; outwardly projecting tongue-and-grooves are formed in two sides of the upper part of the superposed beam; the superposed slab is horizontally arranged and is a reinforced concrete precast slab; cover-plate-type tongue-and-grooves are formed at the positions, corresponding to the outwardly projecting tongue-and-grooves, on two sides of the superposed slab, and overlapped on the outwardly projecting tongue-and-grooves; the reinforcing mesh pieces and the beam negative reinforcements are horizontally arranged above the superposed beam and the superposed slab; the reinforcing mesh pieces are bundled up with corresponding reinforcements in the superposed beam and the superposed slab; the beam negative reinforcements are bundled up with corresponding reinforcements in the superposed beam; after arrangement of the reinforcing mesh pieces and the beam negative reinforcements, concrete is poured to form the cast-in-situ concrete superposed layer. The assembled reinforced concrete beam-slab structural system has favorable integrity and mechanical property, and the integrity and the anti-seismic property can be improved.

A multifunctional laser beam and plasma arc composite welding torch is provided with a laser-penetrating cavity. A compression nozzle is arranged at the lower end of the welding torch cavity. A slit is formed through a plasma electrode on the compression nozzle of the welding torch. Parts of laser beams are incident on the slit edge of the electrode, and parts of the laser beams penetrate through the slit to focus on a workpiece. The electrode heated by the laser beams causes gas ionization to form a plasma arc between the electrode and the compression nozzle firstly. After compressed by the compression nozzle, the plasma arc is built between the nozzle and the workpiece. The laser beams penetrating through the nozzle focus and interact with the plasma arc to form plasma-laser discharging, accordingly the plasma arc is further contracted, and under the combined action with the laser beams, a welding point with the high energy density is formed on the workpiece. The multifunctional laser beam-plasma arc composite welding torch removes the defects of laser welding and plasma welding and has the composite heat source coupling efficiency higher than that of conventional laser beam-electric arc composite welding.

The invention discloses a recycling treatment process and a recycling treatment apparatus system of power plant circulating water. According to the invention, power plant circulating water is sequentially subject to mechanical accelerated clarification, variable void filtration, submerged ultrafiltration and reverse osmosis membrane treatments. Clear water obtained after the treatments is adopted as an industrial water source for the power plant. Compared to existing technologies, mechanical accelerated clarification, variable void filtration, submerged ultrafiltration and reverse osmosis membrane treatment technologies and an apparatus system employing the technologies are adopted. The technology and the system are advantaged in impact load resistance, low operation pressure, simple and feasible technical operation and maintenance, convenient pipeline installation, and the like. With the method and the system, recycling of power plant circulating water can be promoted. The technology and the system satisfy a development trend of energy saving and consumption reducing. With the technology and the system, recycling of water resource is effectively promoted.

The invention relates to the launching field of an unmanned aerial vehicle, which is an ejection trajectory device of a launcher. The device Comprises a base and a track located on the base, wherein the track can be assembled into one track or several tracks, and the tracks are folded and retracted laterally or vertically in a hinged manner in the track plane. The above-mentioned rails are mainlyinserted and welded by the alignment of the upper, lower, left and right panels and the rib panels between them. The rear part of the rail is hinged on the base, the two sides of the front part of therail are coaxially hinged with a pair of balancing hydraulic cylinders, and the other ends of the pair of balancing hydraulic cylinders are also coaxially hinged on the two sides of the base. The lifting hydraulic cylinder is hinged on the rail and the base, and the hinge axis of the lifting hydraulic cylinder can be coaxial with or parallel to the hinge axis of the balancing hydraulic cylinder.The invention has the advantages of scientific and reasonable design, assembly, high manufacturing accuracy, light weight, high strength, good stability, low construction cost and easy mass production, and is a technical revolution in the field.

The invention relates to the technical field of concrete dams, in particular to an orifice flood discharge structure in a concrete dam. The structure comprises an orifice steel liner arranged along awater flow direction, wherein a concrete structure is poured around the orifice steel liner, the orifice steel liner comprises a plurality of steel liner sections which are sequentially connected andarranged, and the steel liner sections each comprise a top plate, a left side plate, a bottom plate, a right side plate, a first connecting folded plate, a second connecting folded plate, a third connecting folded plate and a fourth connecting folded plate. Welding seams formed by welding of the components are butt welding seams, the butt welding seams are more convenient for groove cutting and welding construction compared with fillet welding seams formed by welding in the prior art, the thickness of the periphery of the butt welding seams is consistent, the welding quality and reliability are improved, a detection operation surface is a plane, and the detection of the welding quality is also convenient. Moreover, the four corner edges of the steel liner sections are not right angles, sothat the problem of stress concentration at the four right-angle corner edges is avoided, the concrete structure is more favorable for vibrating and compacting, and the construction quality is improved.

The invention provides a laser and photoelectric arc compound welding welding torch which comprises a welding torch body. The welding torch body is provided with an input end, an output end and a hollow inner cavity located between the input end and the output end. The welding torch body is provided with a center axis having a laser beam penetrating direction. The input end is provided with an incident ray lens used for focusing laser beams. The output end comprises an insulation lining, a compression nozzle, a protection nozzle and first non-melting electrodes. The insulation lining surroundsthe lower end of the hollow inner cavity. The compression nozzle is located at the output end of the insulation lining. The first non-melting electrodes are inlaid in the insulation lining and are arranged with the central axis with an oblique angle, the bottom ends of the first non-melting electrodes are located above a through hole of the compression nozzle, the distance between the bottom endsof the first non-melting electrodes and the upper surface of the through hole of the compression nozzle is h, and the distance between the bottom ends of the first non-melting electrodes is d; and the radius at of the laser beam passing through the position of the through hole of the compression nozzle is r1, and the radius of the through hole is larger than r1.

The invention discloses an assembled reinforced concrete beam-slab structural system with a cast-in-situ layer in a building structure. The assembled reinforced concrete beam-slab structural system comprises a superposed beam, a superposed slab, reinforcing mesh pieces, the cast-in-situ concrete superposed layer and beam negative reinforcements, wherein the superposed beam is a reinforced concrete precast beam; outwardly projecting tongue-and-grooves are formed in two sides of the upper part of the superposed beam; the superposed slab is horizontally arranged and is a reinforced concrete precast slab; cover-plate-type tongue-and-grooves are formed at the positions, corresponding to the outwardly projecting tongue-and-grooves, on two sides of the superposed slab, and overlapped on the outwardly projecting tongue-and-grooves; the reinforcing mesh pieces and the beam negative reinforcements are horizontally arranged above the superposed beam and the superposed slab; the reinforcing mesh pieces are bundled up with corresponding reinforcements in the superposed beam and the superposed slab; the beam negative reinforcements are bundled up with corresponding reinforcements in the superposed beam; after arrangement of the reinforcing mesh pieces and the beam negative reinforcements, concrete is poured to form the cast-in-situ concrete superposed layer. The assembled reinforced concrete beam-slab structural system has favorable integrity and mechanical property, and the integrity and the anti-seismic property can be improved.

The invention discloses a method for manufacturing a low-cost tungsten electrode. According to the method for manufacturing the low-cost tungsten electrode, a tungsten electrode rod and a Cr-W-Mo-V alloy steel rod are connected to form the low-cost tungsten electrode through a specific connecting method. The welding performance of the end of the tungsten electrode is ensured, conventional tungsten electrodes can be replaced under various stations, and the standard length of a tungsten electrode product can be obtained under the condition of saving the tungsten materials. Welding construction and use are facilitated, and the production cost and argon arc welding construction cost are saved.

The invention provides a basement steel column water-stop treatment method, which belongs to the technical field of basement water-stop construction, and includes the following steps: before the raft slab is poured, the anchor bolt support is supported on the base plane below the raft slab; Connect to the top of the anchor bolt bracket, and level the steel column through the adjusting nut; insert the water-stop steel plate on the surface of the raft, and weld the water-stop steel plate to both sides of the steel column; connect the raft, stop The water steel plate and the bottom of the steel column are co-cast. In the present invention, the bottom of the steel column, the bottom of the water-stop steel plate and the raft are poured into an integrated structure, the structural integrity is good, there is no construction joint between the bottom of the steel column and the raft, and water leakage and seepage of the basement at the bottom of the steel column can be avoided Phenomenon.

The invention discloses a method for detecting the temperature of the root-clearing groove of high-strength Cr-Mo steel double-sided welding, which belongs to the technical field of welding and detection. The invention can judge whether the groove meets the requirements after root cleaning when the root cleaning temperature of Cr-Mo steel is greater than 200°C, and cleverly solves the problem of temperature drop detection in the existing technology, and the process improvement brought by it is effectively It solves the adverse effects of multiple temperature rises and falls on the welding quality during welding, improves the first pass rate of welding, and also solves the manufacturing problem of slow welding speed of high-strength Cr-Mo steel.

The invention discloses a cable fast welding tool which comprises a handle and a heating spoon connected with the handle, wherein a plurality of tin-taking positions are arranged in the heating spoon. The invention further discloses a welding method of the cable fast welding tool. The welding method comprises the following steps that: tin wires are melted in the tin-taking positions in the heating spoon; cable heads needing to be welded are inserted into the tin-placing positions with the melted tin wires; and the cable heads are taken out of the tin-taking positions after absorbing enough tin. For the cable fast welding tool, the plurality of tin-taking positions are arranged in the heating spoon, therefore, the plurality of cable heads can be welded at the same time, the construction efficiency is greatly improved, the welding speed is high, the welding quality is good, the requirement of hot welding on the plurality of cable heads can be quickly met, the efficiency is very high, the adaptability is strong, and the cable fast welding tool is very convenient for welding construction of the cable heads.

The invention provides a pipe cage pipe welding construction method, which adopts a welding construction device, the welding construction device includes a rotating base, the rotating base is arranged at the bottom of the pipe cage, and is used to support and rotate the pipe, the rotating base The base includes a plurality of supporting seats; a rotating force component is installed on the outer circumference of the first section of the pipeline, and the first section of pipeline is rotated by the rotating force component; the unfinished welding part of the first section of the pipeline and the adjacent section of the pipeline is exposed to the outside , Continuously weld the part that has not been welded. The technical solution provided by the invention not only solves the problem of inconvenient welding of pipelines in a narrow space, but also ensures the stability of the pipeline during the welding process and the convenience of disassembling the welding device after the welding is completed.

A preparation method of a rear axle housing of a heavy-duty car comprises the following steps: 1) blanking a steel plate; 2) performing cold and hot press molding to obtain an upper half shell and a lower half shell; 3) milling the joint surface of the upper half shell and the lower half shell; 4) arranging an oil drain hole at the bottom of the lower half shell corresponding to a bulge; 5) closing the upper half shell and the lower half shell, and performing spot welding at intervals along the length direction of a joint seam; (6) positioning a rear axle housing blank, using a milling machinefor machining welding grooves along the joint seam between the upper half shell and the lower half shell, and the cross sections of the welding grooves are V-shaped; (7) carrying out straight joint seam welding along the welding grooves, and obtaining a rear axle housing crude product; (8) calibrating the two ends of the rear axle housing crude product to be round, and forming stepping holes in inner holes at the two ends the rear axle housing crude product respectively; (9) carrying out machining, and setting accessories; and (10) obtaining the rear axle housing of the heavy-duty car after polishing and cleaning. The preparation method is simple in process, high in production efficiency, capable of effectively reducing the machining cost of the product and guaranteeing the quality of theproduct.

The invention provides a method for reinforcing a reinforced concrete column by enlarging the section of self-compacting concrete sleeved with an FRP-steel composite pipe, and relates to a structure reinforcing technology in the field of civil and architectural engineering. The method comprises the following steps: (1) construction preparation; (2) treatment of the surface of the existing reinforced concrete column; (3) sleeving of the steel pipe; (4) pasting of an FRP cloth; and (5) concrete pouring. According to the method, the bearing capacity and the rigidity of the reinforced concrete column which is reinforced can be improved remarkably, the ductility of the reinforced concrete column is improved, the plasticity and toughness of the concrete column are improved, operation is easy, construction is rapid, the engineering cost is low, and the method has wide application prospects.

The invention provides a combined pallet. The combined pallet comprises a pallet frame and at least two first bases. The pallet frame is composed of at least two straight bars, at least two transversebars, at least two first bottom supporting bars and at least two first stand columns. One ends of the first stand columns are welded to first lateral sides of the straight bars correspondingly, the other ends of the first stand columns are welded to the ends of the first bottom supporting bars correspondingly, and lateral stop dogs on the first bases shield the ends of the first bottom supportingbars correspondingly, so that the problem that during machining and conveying of the combined pallet, if the ends of the first bottom supporting bars are exposed out of the first bases, the ends of the first bottom supporting bars are prone to rubbing with the surfaces of rollers on a machining table, and consequentially the surfaces of the rollers are abraded is solved.

The invention discloses a compacting tool set for a penetration-proof tube. The compact tool set comprises a male die body and a female die body; the female die body and the male die body are designed to be semi-circular; the radius of the female die body is greater than that of the male die body; circular arc grooves for eliminating elastic stress are uniformly formed in the inner arc-shaped surface of the female die body; two mutually symmetrical positioning pin holes are formed in two ends of the inner arc-shaped surface respectively; a support is axially arranged at the middle part of the outer arc-shaped surface of the female die body; a flat plate-type connecting seat is welded on the support, and bolt holes are arranged at the four angles of the connecting seat; arc-shaped cogs matched with the circular arc grooves formed in the inner arc-shaped surface of the female die body are uniformly arranged on the outer arc-shaped surface of the male die body; cylindrical positioning pins matched with the positioning pin holes in the inner arc-shaped surface of the female die body are arranged at the two ends of the outer arc-shaped surface of the male die body; a support is axially arranged at the middle part of the section of the male die body; a flat plate-type connecting seat is welded on the support and bolt holes are arranged at the four angles of the connecting seat; the connecting seat of the female die body is connected with the piston of a mould press; and the connecting seat of the male die body is connected with the workpiece platform of the mould press. The compacting tool set, provided by the invention, solves the problem of penetration-proof tube pressing and elastic stress eliminating; and the two parts of the penetration-proof tube pressed can be buckled in an anastomotic manner, so that the penetration-proof tube can be tightly fit with the pipeline which is protected by the penetration-proof tube, the welding procedure is convenient, and the construction efficiency is significantly improved.

The invention relates to an X-type pin support joint for the top of a steel pipe column. The X-type pin support joint comprises the steel pipe column and an X-type casting. The X-type casting is arranged at the top of the steel pipe column and comprises an upper X-type-casting portion and a lower X-type-casting portion. The upper X-type-casting portion is positioned on the upper side of the top end of the steel pipe column. The lower X-type-casting portion is positioned in the steel pipe column, extends radially to the inner wall of the steel pipe column and is welded to the inner wall of the steel pipe column. The improved X-type pin support joint has the advantages that directions and positions of welding joints are changed, and strength, particularly strength of bearing pulling force and horizontal thrust, of the X-type pin support joint for the top of the steel pipe column is improved.