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103 results about "Orbital welding" patented technology

Orbital welding is a specialized area of welding whereby the arc is rotated mechanically through 360° (180 degrees in double up welding) around a static workpiece, an object such as a pipe, in a continuous process. The process was developed to addresses the issue of operator error in gas tungsten arc welding processes (GTAW). In orbital welding, computer-controlled process runs with little intervention from the operator. The process is used specifically for high quality repeatable welding.

Track welding process information intelligent acquisition and analysis method based on Internet of Things technology

The invention relates to the technical field of welding fault analysis, in particular to a rail welding process information intelligent collection and analysis method based on the Internet of Things technology, and the method comprises the steps: obtaining the data of each welding parameter in the rail welding process through an Internet of Things intelligent sensor group; according to the discrete degree of all modal component data in each welding parameter before each collection moment, the instantaneous interference complexity of each welding parameter at each collection moment is obtained in combination with the average level of the similarity degree between the modal components of the welding parameters, and then the credibility weight of each welding parameter at each collection moment is obtained; the method comprises the following steps: analyzing the interference removing singularity of each acquisition moment in the track welding process to obtain the interference removing singularity of each acquisition moment in the track welding process, analyzing the correlation between the interference removing singularity and each welding parameter in the track welding process to obtain the correlation fault significance of each acquisition moment in the track welding process, and judging the fault condition of the track welding equipment based on the correlation fault significance. The accuracy of intelligent analysis in the track welding process can be improved.
Owner:SWISEN RAILWAY ENGINEERING (SUZHOU) CO LTD

Welding auxiliary device for rail frog in alpine region and operation method

The invention discloses an alpine region track frog welding auxiliary device and an operation method, and belongs to the technical field of track welding, the alpine region track frog welding auxiliary device comprises a chassis and an electric push rod A mounted on the chassis, and further comprises a polishing mechanism, a positioning mechanism, a locking mechanism and a control system which are electrically connected with a controller mounted on the electric push rod A, and the alpine region track frog welding auxiliary device comprises a data acquisition module and a data processing module, the data acquisition module is used for acquiring grinding wheel state data and grinding state data; the grinding wheel state evaluation module adjusts the rotating speed of the grinding wheel; the polishing state evaluation module outputs a polishing state coefficient; the polishing pressure evaluation module is used for outputting a pressure coefficient and pressure adjustment information; the pressure regulation and control module is used for constructing a pressure target model according to the current polishing pressure information and the pressure coefficient, outputting target polishing pressure according to the pressure regulation information and regulating the polishing pressure to the target polishing pressure; according to the invention, the waist of the steel rail can be accurately polished before flash welding of the rail frog.
Owner:XIHUA UNIV

Automatic laser welding device and method for corrugated plate of LNG transport ship

The invention belongs to the technical field of corrugated plate welding, and particularly relates to an automatic laser welding device and method for a corrugated plate of an LNG transport ship. The device comprises a corrugated plate clamp, a walking track, a welding trolley and a laser welding machine. The corrugated plate clamp achieves clamping of corrugated sections of the corrugated plate through a four-connecting-rod mechanism composed of a pressing rod, a connecting rod, a telescopic rod and a locking fastener. The walking track is fixed to a base of the corrugated plate clamp, and a rack is arranged on the walking track. A gear meshed with the rack is arranged at the bottom of the welding trolley and carries the laser gun head to move along the track. The laser welding machine modulates a single light spot into a plurality of light spots which are linearly distributed in an array mode, a light spot array is perpendicular to a welding seam, the energy of the light spot in the middle is higher than the energy distribution of the light spots on the two sides, and the method for welding the corrugated plate through the device is provided. When the device is used for welding the corrugated plate of the LNG transport ship, the welding speed is high, the forming quality is good, deformation is small, and consistency is high.
Owner:DALIAN SHIPBUILDING INDUSTRY CO LTD

Mechanized and coordinated motion for fillet and groove welding

A mechanized welding system and associated methods are disclosed. The system includes a welding torch and a two-axis motion apparatus operatively connected to the welding torch and configured to move the welding torch in two independent axes of motion (e.g., X and Y) during an orbital welding procedure to produce at least one of a fillet weld or a groove weld on a workpiece. The system also includes a motion controller operatively connected to the two-axis motion apparatus. The motion controller is configured to control movement of the two-axis motion apparatus along the two axes of motion in a coordinated manner to continuously and simultaneously adjust the welding torch in a height direction and an oscillation direction with respect to the workpiece, while accounting for a physical work angle of the welding torch with respect to the workpiece, and without the two-axis motion apparatus having to be tilted with respect to the workpiece when the physical work angle is changed.
Owner:LINCOLN GLOBAL INC

Manual moving mechanism of track welding device

The utility model relates to a manual moving mechanism of a track welding device, which comprises a rack arranged on a track, a sliding block sliding along the track and a sliding plate fixedly connected with the sliding block, a movable plate is arranged on the sliding plate, one end of the movable plate is arranged on the sliding plate in a hinged mode, and the movable plate can rotate up and down along a hinged point. A speed reducer base is fixedly installed on the movable plate, a motor is installed on the speed reducer base, a spiral gear is installed on an output shaft of the motor and can be meshed with the rack, a manual clutch rod is arranged at the hinged end of the movable plate, a swing block is arranged at one end of the manual clutch rod and hinged to the sliding plate, and the swing block can rotate by pressing the clutch rod. The swing block rotates to enable the movable plate to be lifted upwards along the hinge point so that the spiral gear can be separated from the rack. According to the welding device, only the clutch rod needs to be pressed, the swing block rotates to tilt the movable plate upwards, so that the spiral gear is separated from the rack, only the sliding plate needs to be pushed, the welding device can be rapidly moved to a designated position, and operation is easy, convenient and rapid.
Owner:SHAOXING HANLI IND AUTOMATION TECH CO LTD

Three-axis gantry welding device and welding system

The three-axis gantry welding device comprises a welding mechanism and a conveying rail, the welding mechanism comprises a gantry assembly and a plurality of laser galvanometers, the gantry assembly drives the laser galvanometers to move in the first direction, the second direction and the third direction, and three-direction movement of the laser galvanometers is achieved. Therefore, after a part with a large size is conveyed to a preset position through the conveying track, the multiple laser galvanometers are subjected to three-direction orientation adjustment through the gantry assembly, and therefore the multiple laser galvanometers can move to different orientations of the part to be welded. Thus, after the large-size part reaches the preset position, all positions of the large-size part can be conveniently welded without adjusting the angle and the direction, and therefore the welding efficiency is greatly improved.
Owner:GUANGZHOU MINO AUTOMOTIVE EQUIP CO LTD

Rail welding equipment and welding method for rail welding

The invention discloses track welding equipment and a welding method for track welding, and the track welding equipment comprises a bearing vehicle which comprises a bearing platform and a hoisting assembly arranged on the bearing platform; the welding vehicle set is borne by the bearing table, the welding vehicle set comprises a welding locomotive, and the welding locomotive comprises a welding machine and an adjusting assembly; the adjusting assembly comprises a frame, a transverse adjusting assembly, a longitudinal adjusting assembly and a vertical adjusting assembly, the transverse adjusting assembly, the longitudinal adjusting assembly and the vertical adjusting assembly are arranged on the frame, the hoisting assembly can hoist and move the welding vehicle set or the welding machine, and the adjusting assembly can be connected with the welding machine to drive the welding machine to move to a target welding position. Therefore, the position of the welding machine can be flexibly adjusted according to working conditions, and welding operation efficiency is improved.
Owner:CHANGZHOU RUITAI ENGINEERING MACHINERY CO LTD +1

Box type guide rail of hydraulic climbing device of tower building machine

ActiveCN224118679UReduce welding difficultySimplify the welding processLifting framesBuilding material handlingArchitectural engineeringLaser cutting
A box type guide rail of a hydraulic climbing device of a tower building machine comprises two side plates, a middle plate is arranged between the two side plates, and the middle plate and the side plates are connected in an inserted mode and then fixed in a welding mode to form the box type guide rail. The box-type guide rail aims to solve the technical problem of a box-type guide rail in a hydraulic climbing device of a tower building machine, a traditional box-type guide rail is difficult to weld and form and poor in consistency, an innovative structure that the middle plate and the side plates are welded after being connected in an inserted mode is adopted, the middle plate and the side plates are cut through laser, and matched plugs and insertion holes are designed; wherein a chamfer is arranged at the outer side end of the plug, so that the welding difficulty is successfully reduced, the consistency of each box type rail finished product is ensured, the production quality and efficiency of the box type guide rail are effectively improved, and reliable guarantee is provided for stable operation of a tower building machine.
Owner:HUBEI GEKE TESTING CO LTD +1

Rail stopping device and system

The utility model relates to the technical field of track equipment, in particular to a track stopping device and a track stopping system. The normal direction of the bottom plate is arranged in the first direction. The clamping piece is arranged on one face, in the first direction, of the bottom plate, and the distance between the clamping piece and the bottom plate is adjustable; the stopping piece is connected to the other face, in the first direction, of the bottom plate, and the stopping piece extends in the direction away from the bottom plate in the first direction; the triggering rod is connected with the stopping piece, the triggering rod extends in the direction away from the stopping piece in the second direction, and the second direction is perpendicular to the first direction; and the distance between the trigger rod and the bottom plate is adjustable. The rail backstop device can solve the technical problems that an existing rail backstop device adopts a fixed structure and is connected with a rail in a welded mode, so that the installation efficiency is low, rail base metal is damaged, and the rail backstop device cannot adapt to different operation scenes.
Owner:GUANGXI ENG TECH RES INST CO LTD

Crane track welding fixing device

The utility model relates to the technical field of fixing devices, in particular to a crane track welding fixing device. According to the technical scheme, the fixing device comprises a base and fixing device bodies, the fixing device bodies are arranged at the two ends of the top surface of the base, bases are arranged in the fixing device bodies, inserting grooves are formed in the two sides of the surface of each base, inserting blocks are arranged in the inserting grooves in a sliding mode, bottom plates are arranged on the surfaces of the inserting blocks, and second fixing holes are formed in the bottom plates in a penetrating mode. The welding fixing device has the advantages that flexible adjustment of the position of the pressing plate is achieved through adjustable connection of the screws and the bottom plate, the bottom plate is installed in the inserting grooves in a sliding mode through the inserting blocks, so that the pressing plate can be accurately positioned according to requirements, the problem that a traditional welding fixing device is poor in adaptability is solved, the pressing plate can be fixed or adjusted by screwing the screws, and the welding fixing device is convenient to use. Maintenance convenience and flexibility of the track fixing device are greatly improved, and the track fixing device adapts to various working environments and track specifications.
Owner:HENAN GENERAL AVIATION CO LTD

Welding equipment for traffic track

The invention relates to the technical field of track welding, in particular to traffic track welding equipment which comprises a mounting frame and a clamping mechanism, a welding opening is formed in the mounting frame, a crucible is arranged on the welding opening, and adjusting openings are located in the two sides of the welding opening; a first lead screw is arranged in the adjusting opening, a blocking ring is arranged in the middle of the first lead screw, the directions of threads on the two sides of the blocking ring are opposite, the output end of the rotating motor is connected with the first lead screw, sliding blocks are arranged on the portions, on the two sides of the blocking ring, of the first lead screw respectively, positioning blocks are arranged at the bottoms of the sliding blocks, and the I-shaped rail is positioned through the positioning blocks. The clamping mechanism comprises a mounting frame and a clamping ring, the two ends of the bottom of the mounting frame are fixedly arranged at the tops of the sliding blocks respectively, a buffer groove is formed in the side wall of the mounting frame, a spring is arranged in the buffer groove, a buffer block is arranged at one end of the clamping ring and connected with the spring, and the other end of the clamping ring clamps the crucible. After welding is completed, when the crucible is moved to the next welding position, the stability of the crucible is effectively improved.
Owner:ANHUI SANLIAN UNIV +2

Orbital welding device with improved residual oxygen measurement

An orbital welding device (1), having a welding current source (10) in a welding current source housing (11) and an orbital welding head (20), which is separate from the welding current source housing (11) and is connected to the welding current source (10) by a cable (2), the orbital welding head (20) having a pipe mount (21) and a welding electrode holder (22) for holding a welding electrode (23). An electric motor (31) is designed to drive the welding electrode holder (22) and thus turn it with respect to the pipe mount (21). The orbital welding head (20) has a chamber (50) for shielding gas. An optical oxygen sensor (40) is designed to measure an oxygen concentration in a measuring region (51) in the chamber (50). The oxygen sensor (40) is arranged outside the chamber (50) and is optically coupled to the measuring region (51) by an optical coupling.
Owner:ILLINOIS TOOL WORKS INC

Intelligent detection and compensation method for welding seam of semiconductor pipeline based on space attention

The invention provides a semiconductor pipeline weld joint intelligent detection and compensation method based on space attention, and the method comprises the steps: recognizing an internal fusion region image, an external fusion region image, an internal heat affected region image and an external heat affected region image of a welded special gas pipeline based on a collected 2D image and 3D point cloud of the welded special gas pipeline; respectively inputting the internal fusion region image, the external fusion region image, the internal heat affected region image and the external heat affected region image of the welded special gas pipeline into a pre-trained welding defect identification model to obtain a defect identification result output by the welding defect identification model, the defect identification result is used for indicating a welding defect type and a defect quantification out-of-tolerance degree value existing in the welded special gas pipeline; and on the basis of the defect recognition result, a corresponding process compensation scheme is matched in a process parameter association library, so that welding process parameters of the subsequent welding special gas pipeline of the tungsten electrode track welding equipment are adjusted.
Owner:SHANGHAI JUKE FLUID CONTROL CO LTD

Welding equipment and welding method

The invention provides welding equipment and a welding method. The welding equipment comprises a positioning tool, a track, a welding module and a control system. The positioning tool is used for bearing and positioning the butt joint plate; the track is arranged on the ground or a platform, and the track and the positioning tool are arranged at intervals; the welding module comprises a stand column, a cantilever, a mechanical arm, a welding gun and a visual acquisition mechanism; the stand column is arranged on the track and driven by the walking driving mechanism to walk along the track. One end of the cantilever is connected with the stand column and extends in the horizontal direction, and the cantilever is driven by a lifting driving mechanism to ascend and descend relative to the stand column and driven by a rotating driving mechanism to rotate in the horizontal direction. One end of the mechanical arm is connected with the cantilever; the welding gun is arranged at the other end of the mechanical arm; the visual acquisition mechanism is arranged at the other end of the mechanical arm and is used for acquiring shape data of a butt joint of the butt joint plate; the control system controls the mechanical arm and the welding gun according to morphology data collected by the visual collection mechanism.
Owner:DATONG ELECTRIC LOCOMOTIVE OF NCR

Orbital welding method and device for producing a chain of joining points by means of different welding cycles

The invention relates to an orbital welding method in which two joining partners (152, 154), which are tubular at least in a joining region (150), are arranged relative to one another, in particular in a lap joint, and in which a chain (211) of joining points (210) running in the circumferential direction of the joining partners (152, 154) is produced in the joining region (150), which chain integrally connects the joining partners (152, 154), wherein, in order to produce the chain (211) of joining points (210), an arc burns between a welding electrode (126) and at least one of the joining partners (152, 154), wherein the arc is operated with a characteristic curve which has a sequence of welding cycles each with at least a high-current phase and a low-current phase, and wherein the sequence of welding cycles comprises welding cycles which differ in at least one welding parameter, and / or the characteristic curve has, before or after the sequence of welding cycles, one or more cycles which differ from the welding cycles in at least one welding parameter. The invention further relates to an orbital welding device (100, 101) and a system (700) having such an orbital welding device (100, 101).
Owner:VIEGA TECHNOLOGY GMBH & CO KG

Orbital welding device with simplified handling

An orbital welding device (1), having a welding current source (10) in a welding current source housing (11) and a base controller (12), and an orbital welding head (20) connected to the welding current source (10) by a cable (2), the orbital welding head (20) having a pipe mount (21) and a welding electrode holder (22) mounted rotatably with respect to the pipe mount (21) for holding a welding electrode (23). A motor (31) is designed to drive the welding electrode holder (22). The orbital welding head (20) has a chamber (50) for shielding gas, and an electrical circuit (60) that is connected: to a position sensor (41) designed to generate a position value (41.1); and / or to a memory device (61) designed to store one or more loading values (61.1) and / or one or more calibrating values (61.2) in the memory device (61).
Owner:ILLINOIS TOOL WORKS INC

Copper strip welding equipment

The utility model belongs to the technical field of copper strip welding, and discloses copper strip welding equipment which comprises a first support, an ejection air cylinder and a vertical rod are arranged at the top of the first support, and the vertical rod and the ejection air cylinder are collinear; the middle section and the right end of the connecting rod are movably connected with the top of the vertical rod and a piston of the ejection air cylinder respectively; the left end of the connecting rod is movably connected with a welding positioning pressure head; a feeding rail is arranged at the top of the second support, and the welding positioning pressing head is located over the feeding rail; a laser welding assembly is movably arranged on the top of the third support; the equipment is reasonable in overall structural design, and precise positioning in the copper strip welding process is achieved through cooperation of the assemblies on the supports; through the accurate positioning relation among the welding positioning pressure head, the feeding track and the laser welding assembly, the welding precision is effectively improved, the welding defects are reduced, the quality of the welded copper strip is guaranteed, and the requirement for high-precision copper strip welding machining can be met.
Owner:SHANGHAI WANLEI LASER TECH CO LTD

Orbital welding device with improved residual oxygen measurement

An orbital welding device (1), having a welding current source (10) in a welding current source housing (11) and an orbital welding head (20), which is separate from the welding current source housing (11) and is connected to the welding current source (10) by a cable (2), the orbital welding head (20) having a pipe mount (21) and a welding electrode holder (22) for holding a welding electrode (23). An electric motor (31) is designed to drive the welding electrode holder (22) and thus turn it with respect to the pipe mount (21). The orbital welding head (20) has a chamber (50) for shielding gas. An optical oxygen sensor (40) is designed to measure an oxygen concentration in a measuring region (51) in the chamber (50). The oxygen sensor (40) is arranged outside the chamber (50) and is optically coupled to the measuring region (51) by an optical coupling.
Owner:ILLINOIS TOOL WORKS INC

Orbital Welding Device with Welding Head Being Adjustable Between an Open and a Closed State

The invention relates to an orbital welding device with a welding head that has a receptacle for positioning a joining area of two joining partners, in particular a fitting and a pipe end, in which joining partners are tubular at least in the joining area. The welding head has a first opening and a second opening opposite the first opening, between which the receptacle extends, and wherein the welding head is adjustable between an open position and a closed position. The welding head, in the open position, has an insertion opening connecting the first and second openings for inserting a joining area of two joining partners, which are tubular at least in the joining area, into the receptacle, and wherein the insertion opening is at least partially closed in the closed position. The invention further relates to a system with such an orbital welding device and an orbital welding method.
Owner:VIEGA TECHNOLOGY GMBH & CO KG

Leveling supporting device for steel rail welding butt joint

The invention relates to the technical field of rail welding, in particular to a leveling and supporting device for steel rail welding butt joint. And the supporting assembly is arranged on the base and used for supporting the track. The supporting assembly comprises two containing plates arranged on the base, one containing plate can move up and down based on the base, the other containing plate can move up, down, left and right based on the base, an adjusting assembly is arranged between the two containing plates, and the horizontal height of the two containing plates is adjusted through the adjusting assembly. And a filling air bag used for adjusting the horizontal swing angle of the track is further arranged in the placing plate, so that the welding quality of the equipment is effectively guaranteed, manual operation steps are reduced, and the welding efficiency is improved.
Owner:(SUZHOU) RAIL TRANSIT SCI & TECH RES INST CO LTD SHANGHAI CIVIL ENG GRP OF CREC +2

Rail type welding equipment

The invention discloses rail type welding equipment, which belongs to the technical field of welding and comprises a frame body, a guide plate and a welding gun. The frame body is an arc plate with an arc opening groove, a first sliding way is arranged in the frame body, a split structure is adopted, the frame body is composed of two arc plates, a supporting plate with a receding space is fixed outside the arc plates, installation is convenient, and the structural strength is enhanced. The guide plate is slidably mounted in the first slideway and internally provided with a second slideway; the welding gun is installed on the second slide way and can move in the extending direction of the second slide way. In the aspect of installation, the installation difficulty is reduced and the time is saved due to the design of the arc-opening groove and the split structure. In the aspect of operation stability, the guide plate and the welding gun are matched through a sliding strip and a sliding groove and an arc strip and an arc groove, gear transmission driven by a motor is combined, accurate movement control is achieved, shaking deviation is reduced, and it is ensured that the track of the welding gun is accurate. And meanwhile, the frame body is stably locked on the pipe fitting through the multiple screws and the locking plate with the cambered surface anti-skid design, and looseness in the welding process is avoided.
Owner:XUZHOU YUBANG ELECTROMECHANICAL CO LTD

Generator for rail welding vehicle

The utility model discloses a generator for a track welding vehicle. The generator comprises a casing, a rotor, a rear end cover, a wire outlet box, an exciter, a permanent magnet machine and a current transformer. Ventilation gaps are respectively formed in the thickness middle parts of the two end parts of the rotor coil; the rear end cover comprises an outer flange ring, a rotating shaft supporting ring and a plurality of radial connecting rib plates, and an air hole is formed between every two adjacent radial connecting rib plates; the rear end faces of the middles of the radial connecting rib plates extend backwards to form supporting claws respectively. The wire outlet box comprises a lower box and an upper box; the lower box and the upper box abut against the rear end face of the outer flange ring of the rear end cover and are installed on the rear end face of the machine shell together with the rear end cover through bolts. The exciter is arranged at the rear part of the rotating shaft penetrating through the rotating shaft supporting ring of the rear end cover; the permanent magnet machine is mounted on the rear end surfaces of the plurality of supporting claws of the rear end cover; the current transformer is mounted in the upper box; and the three stator outgoing lines are led into the upper box through air holes in the upper part of the rear end cover. According to the utility model, the requirements of placement, heat dissipation and performance can be met.
Owner:SHANGHAI MARATHON-GENXIN ELECTRIC CO LTD

Welding fixture for welding robot

The welding clamp comprises a welding platform, a protective shell, a hydraulic cylinder, a sliding platform and a limiting assembly, the protective shell is fixedly connected to the upper surface of the welding platform, feeding ports are formed in the left side and the right side of the protective shell, and a mounting box is fixedly arranged in the middle of the inner top face of the protective shell; the hydraulic cylinders are fixedly mounted on the inner top face of the mounting box in parallel, piston rods of the hydraulic cylinders are fixedly connected with the upper surface of the sliding platform, a sliding rail is arranged on the lower bottom face of the sliding platform, the welding robot is slidably mounted in the sliding rail, and a first control block is fixedly connected to the upper surface of the sliding platform. The two limiting assemblies are arranged on the left side and the right side of the first control block in a bilateral symmetry mode. Through the arrangement of the limiting assembly, the correcting assembly and the positioning column, the operation complexity of the welding robot in the using process is greatly reduced, and meanwhile, through the arrangement of the adjusting rod and the distance adjusting and controlling element, the welding robot can be suitable for welding of parts of various specifications.
Owner:SHANXI VOCATIONAL & TECH COLLEGE

Welding current source for an orbital welding device, having a coil with an intermediate tap

The invention relates to a welding current source (128) for an orbital welding device (100, 101), having a first and a second output (174, 176) for feeding an arc welding process of an orbital welding device (100, 101). The welding current source (128) has a coil (604) which has a first coil connection (606), a second coil connection (610), and an intermediate tap (608), a first winding part (612) of the coil (604) being electrically connected between the first coil connection (606) and the intermediate tap (608) and a second winding part (614) of the coil (604) being electrically connected between the intermediate tap (608) and the second coil connection (610). The invention further relates to a method for operating the welding current source (128), to an orbital welding device (100, 101) having such a welding current source (128), and to a system (700) having such an orbital welding device (100, 101).
Owner:VIEGA TECHNOLOGY GMBH & CO KG

Orbital Welding Device with Electrode Ring Segment

The invention relates to an orbital welding device with a welding head that has a receptacle for positioning a joining area of two joining partners, in particular a fitting and a pipe end which joining partners are tubular at least in the joining area, wherein The welding head has an electrode ring segment which is arranged in the circumferential direction around the receptacle and is mounted in such a way that the electrode ring segment can be rotated about an imaginary longitudinal axis of the receptacle. The electrode ring segment has an electrode holder for a welding electrode and / or a welding electrode. The welding head has drive means, in particular one or more driven drive wheels, for driving the electrode ring segment about the imaginary longitudinal axis. The invention further relates to a system, with such an orbital welding device and an orbital welding method.
Owner:VIEGA TECHNOLOGY GMBH & CO KG

Steel ring lining aligning welding trolley

The present application relates to the technical field of lining welding, and particularly relates to a steel ring lining alignment welding trolley, which comprises a stepping device, a working platform, a steel ring longitudinal traction device, a ring-shaped running track, a welding device and an alignment device, the stepping device is capable of moving in a first direction; the working platform is arranged on the stepping device; the steel ring longitudinal traction device is arranged on the working platform and is used for grabbing a steel ring and moving the steel ring to a butt joint position; the ring-shaped running track is arranged on the working platform; the welding device is capable of moving along the ring-shaped running track and welding a weld joint between adjacent steel rings; and the alignment device is capable of moving along the ring-shaped running track and is used for adjusting the misalignment of the steel ring. The misalignment size of the steel ring is detected by using the alignment device, and the position of the steel ring is quickly adjusted to solve the misalignment problem, so that the welding positioning requirement is met, the construction process is simple, and the welding efficiency and welding quality can be effectively ensured.
Owner:CHINA RAILWAY CONSTR HEAVY IND

ORBITAL WELDING PROCESS AND DEVICE FOR PRODUCEING A CHAIN ​​OF JOINT POINTS BY MEANS OF SEQUENTIAL FIXING

The invention relates to an orbital welding process in which two joining partners (152, 154) that are tubular in at least one joining area (150) are arranged relative to each other, in particular in a lap joint, and in which a chain (211) of joining points (210) extending circumferentially to the joining partners (152, 154) is generated in the joining area (150), which connects the joining partners (152, 154) by a material bond, wherein an arc burns between a welding electrode (126) and at least one of the joining partners (152, 154) to generate the chain (211) of joining points (210), wherein the arc is operated with a current characteristic curve that has a sequence of welding cycles with at least one high-current phase and one low-current phase, wherein the welding energies (Esz) of the individual welding cycles are in the range of 30–240 J, preferably 35 - 220 J, particularly 40 - 195 J.The invention further relates to an orbital welding device (100, 101) and a system (700) with such an orbital welding device (100, 101).
Owner:FEF FORSCHUNGS- & DEVELOPMENTSGESELLSCHAFT FÜGETECHNIK GMBH +1

Railway construction track welding device

The utility model discloses a railway construction track welding device concretely relates to railway construction technical field, and includes: U type support frame, the inside top of U type support frame is provided with mechanical arm, and the output of mechanical arm is connected with the welding torch, the both sides of U type support frame all are provided with movable fixed frame. The utility model discloses through the symmetrical setting fixed frame, movable block, positioning arm, moving mechanism and elevating system at the both sides of U type support frame, can make fixed frame drive two positioning arms to descend and clamping track, and through setting material pressing subassembly, fixed frame descends simultaneously, and the pressing plate on material pressing subassembly can press to track, when two positioning arms are clamped in the both sides of track, the pressing plate also can be pressed tightly on the above track, and is equipped with two groups of positioning arms and pressing plate respectively in the both sides of welding spot, and then can effectively fix the welding track, avoids the vibration displacement of track, and greatly guarantees the welding quality, and the use effect is better.
Owner:徐博