33results about How to "Increase the welding surface" patented technology

The invention belongs to the technical field of electric resistance welding, and particularly relates to an end plug clamping head. The end plug clamping head comprises a clamping head body and a fixing ring. The outer wall of the clamping head body is sleeved with the fixing ring. The clamping head body comprises three clamping head units which are integrated into the cylindrical clamping head body. Each clamping head unit comprises a cover plate, a layering sheet and a base body from top to bottom, wherein the cover plate, the layering sheet and the base body are integrally formed and are consistent in outer diameter, the inner diameter of the cover plate is smaller than the inner diameter of the layering sheet, the layering sheet and the base body are consistent in inner diameter, the clamping head unit is provided with a screw penetrating the clamping head unit in the vertical direction, and silica gel is arranged on the top of the screw. When the provided end plug clamping head is used for conducting welding, a welded workpiece cannot deform or discolor, and the metallographic structure of the welded end plug and a cladding pipe cannot change.

The invention relates to an anti-counterfeiting packaging barrel. The packaging barrel comprises an inner cover ring (1), an outer cover ring (2) and a barrel body (4); the outer cover ring (2) is arranged on the outer side of the inner cover ring (1), and the outer cover ring (2) is arranged on the top of the barrel body (4); and the anti-counterfeiting packaging barrel is characterized in that the outer side edge of the inner cover ring (1) is provided with a first clamping opening (1.1) and a second clamping opening (1.2) inwards, and the inner side edge of the outer cover ring (2) is provided with a first clamping block (2.1) and a second clamping block (2.2) inwards; and the first clamping block (2.1) is matched with the first clamping opening (1.1), and the second clamping block (2.2) is matched with the second clamping opening (1.2). The anti-counterfeiting packaging barrel is good in sealing performance, high in safety and convenient to uncover; and behaviors of counterfeiting and reproduction can be effectively prevented.

The invention relates to the field of heat exchangers, in particular to a shell and tube heat exchanger. The shell and tube heat exchanger comprises a heat exchanger shell and a tube pass assembly arranged in an inner cavity of the heat exchanger shell. The tube pass assembly comprises a tube bundle support, a copper tube, a distributor and a collector, wherein the copper tube is arranged on the tube bundle support, and the distributor and the collector are connected with the ends of the copper tube correspondingly. A liquid inlet and a liquid outlet which are communicated with an inner cavityof the heat exchanger shell are formed in the heat exchanger shell. The heat exchanger shell comprises a barrel and end plates welded to the edges of openings in the two ends of the barrel in a sealed mode. The shell and tube heat exchanger has the advantages that the structure is simplified, machining is convenient, cost is reduced, and sealing performance is guaranteed.

The invention discloses a high-intensity welding point geogrid, comprising rib bands. The high-intensity welding point geogrid is characterized in that adjacent rib bands are arranged between an upper connecting piece and a lower connecting piece and welded into a whole through a connecting block formed by the upper connecting piece and the lower connecting piece in an ultrasonic wave way. A joint surface of the upper connecting piece and / or the lower connecting piece is provided with a groove. In the invention, when the geogrid is manufactured, the upper connecting piece and the lower connecting piece are arranged on a connection part of the rib bands which are formed by welding through the ultrasonic wave. The grid manufactured by the connecting block has the advantages of large welding surface and high intensity of the welding part, and particularly greatly improves the shearing resistance of the welding part, thereby prolonging the service life of the grid. In actual project application, the service life of the grid can be prolonged.

The invention discloses a left rear wheel cover arranged in a left side shell of a vehicle. The left rear wheel cover comprises a wheel cover body, and a mounting part positioned at the outer side periphery of the wheel cover body. The wheel cover body comprises a semicircular arc edge positioned at the lower side; the shape of semicircular arc edge is matched with that of a tire, and the semicircular arc edge is provided with a projection surface facing a vehicle shell; multiple bosses are evenly distributed on the projection surface at intervals; the bosses protrude towards the vehicle shell; the wheel cover body further comprises a step connected to the left upper part of the semicircular arc edge, and an inclined block connected to the outer end edge of the step; one end facing the left upper side and being far from the vehicle shell of the inclined block is inclined; the left half edge of the mounting part is connected with the inclined block; the wheel cover body further comprises an oil adding port locking protective cover mounting part additionally arranged at the right upper side of the semicircular arc edge; the left lower end of the oil adding port locking protective cover mounting part is connected with the right upper end of the inclined block and the right upper end of the step; and the right lower end of the oil adding port locking protective cover mounting part is connected with the right upper edge of the semicircular arc edge.

The invention relates to an anti-counterfeiting packaging barrel. The packaging barrel comprises an inner cover ring (1), an outer cover ring (2) and a barrel body (4); the outer cover ring (2) is arranged on the outer side of the inner cover ring (1), and the outer cover ring (2) is arranged on the top of the barrel body (4); and the anti-counterfeiting packaging barrel is characterized in that the outer side edge of the inner cover ring (1) is provided with a first clamping opening (1.1) and a second clamping opening (1.2) inwards, and the inner side edge of the outer cover ring (2) is provided with a first clamping block (2.1) and a second clamping block (2.2) inwards; and the first clamping block (2.1) is matched with the first clamping opening (1.1), and the second clamping block (2.2) is matched with the second clamping opening (1.2). The anti-counterfeiting packaging barrel is good in sealing performance, high in safety and convenient to uncover; and behaviors of counterfeiting and reproduction can be effectively prevented.

The invention discloses a lamp shell assembly with high sealing performance. The lamp shell assembly comprises a shell with an opening in the outer end and a lampshade for sealing the shell; the lampshade comprises a body and a welding portion which is located at the edge of the body and welded to the outer end face of the shell; the body is provided with a lampshade outer wall and a lampshade side wall extending towards the shell from the lampshade outer wall; the welding portion comprises a first welding side and a second welding side, wherein the first welding side extends outwards from the lampshade side wall in the radial direction and is totally in an annular shape, and the second welding side extends towards the shell from the first welding side; and after the first welding side is attached to the outer end face of the side wall of the shell, ultrasonic welding is adopted; and after the second welding side is attached to the outer side face of the side wall of the shell, ultrasonic welding is adopted. The lamp shell assembly with the high sealing performance is better in sealing performance, and the service life of an automobile ground lighting lamp is prolonged.

The invention discloses a brazing plate heat exchanger and a manufacturing method for the heat exchanger plate. The brazing plate heat exchanger includes a heat exchanger main body, a bottom plate, acover plate and a pipe joint, the pipe joint is welded to the cover plate, the heat exchanger plate, the cover plate and the bottom plate are made by punching of a stainless steel material, the pipe joint is made by punching of a copper material, and a flanging is arranged at the opening edge, surrounding a mounting opening, of the cover plate; and an annular welding part is formed in the pipe joint, the pipe joint is arranged on the flanging in a sleeving or inserted mode, and the welding part is welded to the plate face of the cover plate. The brazing plate heat exchanger is simple in structure, the copper pipe joint is adopted, the welding with a copper liquid inlet pipe is facilitated, and the difficulty of the after-sales installation is greatly simplified; and meanwhile, the copper pipe joint and the cover plate adopt the matching welding between the welding part and the flanging, the structure is more reliable and stable, and the welding is more convenient.

The invention relates to a method for manufacturing an H-shaped sodium lamp niobium tube. After a niobium filament is straightened, the niobium filament is cut to be 12mm-16mm, then the surface of the niobium filament is subjected to polishing treatment, the niobium filament is placed between a first punching mold and a second punching mold, and after punching, the H-shaped sodium lamp niobium tube is obtained through automatic blanking. Compared with the prior art, a high-accuracy installation mold and a high-precision deep-punching device are specially customized, so that the product quality is guaranteed; the processing technology is relatively simple and adopts few procedures, the product quality and consistency are easy to guarantee, fully-automatic production is realized, and the efficiency is high; and an advanced data control system is equipped, and niobium zirconium filament materials can be selected and optimized with the adoption of a material design theory.

The invention discloses a wheel assembly for an aerial work platform. The wheel assembly comprises a wheel beam, a steering mechanism, a leveling mechanism and driving wheel assemblies arranged at both ends of the wheel beam; each driving wheel assembly comprises a wheel mounting base, a wheel motor and a wheel; the wheel beam comprises two beam steel plates which are vertically arranged, a beam connecting plate arranged between the two beam steel plates and a U-shaped hinged seat arranged between the two beam steel plates; the U-shaped hinged seat is of an integral structure formed by stamping one integral steel plate so as to form mounting base rotating grooves for accommodating the wheel mounting bases in the U-shaped hinged seat. The wheel assembly has the advantages that when stable rotational connection is provided for the driving wheel assemblies, the integral structure is simpler and more practical; moreover, better spatial layout can be realized.

The invention discloses a left rear wheel cover arranged in a left side shell of a vehicle. The left rear wheel cover comprises a wheel cover body, and a mounting part positioned at the outer side periphery of the wheel cover body. The wheel cover body comprises a semicircular arc edge positioned at the lower side; the shape of semicircular arc edge is matched with that of a tire, and the semicircular arc edge is provided with a projection surface facing a vehicle shell; multiple bosses are evenly distributed on the projection surface at intervals; the bosses protrude towards the vehicle shell; the wheel cover body further comprises a step connected to the left upper part of the semicircular arc edge, and an inclined block connected to the outer end edge of the step; one end facing the left upper side and being far from the vehicle shell of the inclined block is inclined; the left half edge of the mounting part is connected with the inclined block; the wheel cover body further comprises an oil adding port locking protective cover mounting part additionally arranged at the right upper side of the semicircular arc edge; the left lower end of the oil adding port locking protective cover mounting part is connected with the right upper end of the inclined block and the right upper end of the step; and the right lower end of the oil adding port locking protective cover mounting part is connected with the right upper edge of the semicircular arc edge.

The invention discloses a bridge type operation platform which comprises a machine seat assembly, wheel assemblies, a telescopic arm assembly and a platform assembly. The machine seat assembly comprises two girders, a plurality of girder connecting plates used for enabling the two girders to be connected, and two wheel assembly installation seats used for installing the wheel assemblies, and the two wheel assembly installation seats are arranged at the front ends and the rear ends of the girders respectively and provided with U-shaped wheel assembly installation grooves. Each wheel assembly comprises a wheel cross beam, a steering mechanism, a leveling mechanism and driving wheel assemblies arranged at the two ends of the wheel cross beam, wherein the wheel cross beam is installed in the corresponding wheel assembly installation grooves through a cross beam rotating shaft, and the leveling mechanism comprises leveling oil cylinders. The machine seat assembly is adjusted to be level through the two leveling oil cylinders of each leveling mechanism so that the whole bridge type operation platform can work in a relatively stable state, the safety performance is improved, and it is ensured that construction can be conducted under complex road conditions.

The technical scheme of the invention provides a high-load rear axle. The high-load rear axle comprises a beam assembly, spring seats, trailing arms, and shock absorber brackets; the two trailing arms are longitudinally arranged along the two ends of the beam assembly respectively; the two spring seats are respectively positioned inside the corresponding trailing arm and are arranged on the upper surface of the beam assembly; the two shock absorber brackets are respectively arranged at the positions, opposite to the spring seats, on the back side of the beam assembly; a first welding seam which longitudinally crosses over the beam assembly and is welded with the upper surface of the beam assembly is arranged on each spring seat. The first welding seam which longitudinally crosses over the beam assembly is arranged on each spring seat, so that the welding surfaces of the spring seats and the beam assembly are greatly increased, stress is favorable to be dispersed, the stability of a welding process is favorably improved, and the fatigue performance of each spring seat bearing high-load stress is facilitated.

The invention discloses a chassis structure for an aerial work platform. The chassis structure comprises an engine base assembly and wheel assemblies, wherein the engine base assembly comprises two beams, multiple beam connection plates used for connecting the two beams and two wheel assembly mounting bases used for mounting the wheel assemblies, the two wheel assembly mounting bases are arranged at the front ends and the rear ends of the beams respectively, and a U-shaped wheel assembly mounting groove is formed in each wheel assembly mounting base; each wheel assembly comprises a wheel beam, a steering mechanism, a leveling mechanism and drive wheel assemblies arranged at the two ends of the wheel beam, each wheel beam is rotationally mounted in the wheel assembly mounting groove through a beam rotary shaft, and each leveling mechanism comprises a leveling oil cylinder. The engine base assembly is adjusted to be horizontal through the two leveling oil cylinders, so that the whole bridge type work platform can operate in a relatively stable state, the safety performance is improved, and construction can be performed under a complicated road condition.

The invention discloses a groove-type metallized half hole, which includes a half hole opened on the side wall along the thickness direction of a PCB board. The diameter of the half hole is d, and the thickness of the PCB board is h. Positioning groove, the length, width, and depth of the positioning groove are X, Y, and H respectively, and X≥d, Y>d / 2, H<h, and the hole wall of the half hole and the inner wall of the positioning groove are provided in one piece The metal layer of formula structure, wherein, d, h, X, Y, H are all real numbers greater than zero. The groove-shaped metallized half hole greatly improves the welding strength of the hole wall and the mechanical external force resistance of the side wall welding due to the increase of the welding surface in the X and Y directions, and greatly improves the reliability of welding and assembly. The invention also discloses a method for manufacturing groove-shaped metallized half-holes. When making groove-shaped metallized half-holes by this method, the metal layer is not easy to curl in the direction of tool rotation, and will not be pulled off, warped, damaged, or copper thorns Residue, effectively improve the open circuit and short circuit problems during welding, and improve welding reliability.