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.

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.

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 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.