9851results about "Tubular articles" patented technology

The invention discloses a multi-mechanical-arm space-time synchronization control method for coiled pipe welding, and belongs to the technical field of automation control, and the method comprises the steps: in a primary laser and TIG hybrid welding execution stage, carrying out real-time data acquisition on a welding area of a workpiece, carrying out real-time deviation detection, and once real-time welding deviation is detected, carrying out time-space synchronization on the welding area of the workpiece; a local correction mechanism is triggered immediately, and deviation is prevented from being accumulated in the single welding process; after one-time welding is completed, the workpiece enters a transition area, global contour reconstruction is conducted on a welded section of the workpiece through three-dimensional scanning equipment, global deviation recognition is conducted, and unprocessed hysteresis deformation and accumulative errors are covered and corrected in real time; on the basis of the analysis result of the global deviation recognition, double correction is conducted on secondary welding, and cooperative control over space track correction and technological parameter adaptation is achieved; and after secondary welding is completed, the correction effect is evaluated through a double-layer evaluation mechanism, and the stability of the correction process is ensured.

The invention relates to the technical field of metal laser cutting, in particular to a laser cutting device for metal machining and a cutting method of the laser cutting device. Comprising a base, a vertical plate is fixedly connected to the base, a support is fixedly connected to the base, a limiting ring is fixedly connected to the support, and a plurality of positioning mechanisms are arranged on the limiting ring; a cutting mechanism is mounted on the inner wall of the outer gear ring; the cutting mechanism comprises a mounting block, a second electric push rod is fixedly connected to the mounting block, the output end of the second electric push rod is in transmission connection with a linkage plate, and a laser cutting head is mounted on the linkage plate. The metal pipe is clamped through the positioning mechanism, the cutting mechanism is driven to rotate through the outer gear ring, the laser cutting head conducts circumferential cutting on the metal pipe, the height of the laser cutting head is adjusted through the second electric push rod, and the cutting distance between the laser cutting head and the metal pipe reaches the best.

The invention belongs to the technical field of laser processing equipment, and particularly relates to an automatic feeding and discharging pipe laser cutting machine which comprises a cutting table, a third groove plate is slidably connected to one side of the upper end face of the cutting table, a second groove plate is slidably connected to a sliding groove of the third groove plate, and a fourth groove plate is slidably connected to a sliding groove of the second groove plate. A lifting plate is slidably connected to the four sliding grooves of the groove plate, a rotating plate is rotatably arranged on one side of the lower end face of the lifting plate, and clamping plates are slidably connected to the two sides of the rotating plate. By means of the positioning and placing mechanism and the discharging auxiliary mechanism, when plum blossom pipes are cut at equal intervals, the grooves of the cut pipes slide down along the adjusting rods, the multiple sections of cut pipes are stacked in the box body in order, automatic discharging is achieved, the storage space of the box body is reasonably utilized, and the working efficiency is improved. And further transferring and machining of the pipes are facilitated.

A method of additive manufacturing a part having integrated passages is provided. In one aspect, the method includes forming a part having a near net shape by moving a friction stir tool to deposit a filler material in a predetermined formation. The tool can include a rotating spindle having a channel configured to hold the filler material. The method can include machining the near net shape part to form a plurality of grooves extending into a surface of the part, the plurality of grooves sized and shaped to each receive a tube. The method can include placing a tube into each of the plurality of grooves and moving the tool across the surface of the part and depositing additional material configured to secure the tubes within the plurality of grooves. The method can include machining the additional material deposited over the tubes to a predetermined shape.

The invention discloses a pressure pipeline welding device, and relates to the technical field of pipeline welding, the pressure pipeline welding device comprises a machine base and a cross beam installed on one side of the machine base, a guide rod and a rotating rod are connected to the two sides of the top of the machine base in parallel, and a fixing base for providing pipeline alignment outer ring welding support is installed in the middle of the machine base. According to the pressure pipeline welding device, the inner welding gun is used for carrying out inner circumference root welding treatment on the inner groove of the abutted seam, and then the outer welding gun with the adjustable angle is used for carrying out outer circumference root welding and wave welding on the outer groove of the abutted seam in sequence; the traction assembly is used for pulling the pipeline clamped by one clamping mechanism to abut against the pipeline clamped by the other clamping mechanism, so that the abutted seam gap between the two to-be-welded pressure pipelines is reduced during welding, and it is guaranteed that abutting welding is achieved for inner and outer abutted seam grooves of the pressure pipelines during welding; and it is ensured that the welding device can achieve high-quality welding on the pressure pipeline.

The invention discloses a laser self-adaptive cutting method and system for a heavy special-shaped thickness steel pipe, and relates to the field of heavy special-shaped workpiece cutting technology application, and the laser self-adaptive cutting method comprises the steps that according to a collected surface image of a workpiece, the geometrical shape, surface defects and material texture features of the workpiece are recognized, and thickness distribution information of the workpiece is obtained; obtaining thickness data of different positions of the workpiece based on the thickness distribution information; based on the geometrical shape, the surface defect, the material texture feature and the thickness data, an optimal cutting path is obtained; and based on the optimal cutting path, a laser cutting task is executed, the laser power, the pulse frequency and the cutting speed are automatically adjusted according to the thickness change, and meanwhile, when vibration is detected, vibration is compensated through reverse excitation or dynamic damping adjustment. The key technical problems in heavy special-shaped workpiece cutting are solved, and the heavy special-shaped workpiece cutting device has wide industrial application prospects and extremely high popularization value.

The invention relates to the technical field of pipe welding, and discloses special welding equipment for an inner pipe connection type heat insulation oil casing, which comprises a welding table, a pipeline clamping mechanism is arranged at the top of the welding table, and the pipeline clamping mechanism comprises two rotating rings. During oil pipe machining, two oil pipes penetrate through the fixing rings to be connected, the electric telescopic rods drive the V-shaped clamping plates to clamp the oil pipes, and the driving motors enable the supporting rollers to support the oil pipes through the gears and the lead screws. The adjusting motor is matched with a related structure, so that the grinding wheel and the arc-shaped grinding piece are attached to oil pipes with different diameters. The grinding motor and the rotating motor work cooperatively to comprehensively grind the oil pipe, during welding, the oil pipe rotates at a constant speed to achieve uniform welding, and after welding, the grinding wheel and the arc-shaped grinding piece clean weld joints. In addition, in the polishing process of the equipment, a cleaning brush is driven to clean a polishing part through transmission of a gear and a chain, the polishing and welding quality is guaranteed, and the machining efficiency is improved.

The invention relates to the technical field of laser pipe cutting machining, and discloses a laser pipe cutting machine machining optimization method for small pipes. The method comprises the following steps: acquiring three-dimensional point cloud data of a to-be-processed pipe, and extracting a pipe axis direction vector and pipe wall thickness distribution data through geometric topology analysis; a dynamic machining coordinate system is established based on the axis direction vector, and the theoretical projection position of the laser focus in the coordinate system is calculated; material absorption characteristic parameters are matched according to the pipe wall thickness distribution data, and a laser power density gradient adjusting instruction is generated; monitoring the radial run-out amount in the rotating process of the pipe in real time, and generating a laser focus track compensation parameter in combination with a theoretical projection position; and finally, the laser power density gradient adjusting instruction and the focus track compensation parameters are fused to generate a cutting path control signal, and a laser cutting head is driven to complete machining. According to the method, the problems of insufficient precision and unstable quality in the machining process of small pipes are effectively solved, and the machining adaptability is improved.

The invention belongs to the technical field of plastic pipe forming and processing, and discloses a forming device for producing PP pipes, which is technically characterized by comprising a workbench, a vertical plate is fixedly mounted on the surface of the workbench, a bearing column is rotatably mounted on the surface of the vertical plate, and a bearing disc is fixedly mounted at one end of the bearing column; a plurality of groups of bearing pipes are rotatably mounted on the surface of the bearing disc, supporting pieces are arranged on the surfaces of the bearing pipes, a positioning mechanism is arranged on the surface of the vertical plate and comprises a rotating assembly, an inertia preventing assembly and an autorotation assembly, a cooling mechanism is arranged on the surface of the vertical plate, and the cooling mechanism comprises an outer spraying assembly and an inner spraying assembly. The problems that at present, only the outer side of a pipeline can be sprayed, the position of the PP pipe cannot be adjusted in the cooling process, and consequently the overall cooling forming efficiency of the PP pipe is low are solved.

The invention discloses a robot welding pipeline flange displacement special clamp, and relates to the technical field of ship manufacturing equipment, the clamp comprises a processing table, a welding mechanical arm, a placing mechanism, two groups of pipeline clamping mechanisms, two groups of flange fixing mechanisms, a traction mechanism, a rotating platform and three screw rod sliding tables; the placing mechanism is slidably mounted in the middle of the machining table through the rotating platform, and the two pipeline clamping mechanisms are symmetrically slidably mounted on the two sides of the placing mechanism and can synchronously move and clamp pipelines. The two flange fixing mechanisms are symmetrically arranged on the two sides of the containing mechanism and horizontally move through a lead screw sliding table. The traction mechanism is connected with the machining table through a lead screw sliding table and can lock / unlock the rotating platform and drive the containing mechanism to move. The welding mechanical arm is in linkage with the clamp and can conduct welding along the butt joint axis. Multi-degree-of-freedom posture adjustment of a pipeline and a flange can be achieved, a straight pipe and a 0-90-degree bent pipe are matched, it is guaranteed that welding is in a horizontal butt joint state all the time, and the welding quality and efficiency are improved.

The invention relates to the technical field of welding processes, in particular to a ship pipeline assembly welding process. The ship pipeline group welding equipment comprises a diameter adaptation assembly, the diameter adaptation assembly comprises a portal frame, two supporting rods, a roller, a transverse plate, a hydraulic adjusting assembly, a first hydraulic telescopic rod and a second hydraulic telescopic rod, the portal frame is fixedly installed at the top of a fixed supporting table, and the two supporting rods are rotationally connected to the side portion of the portal frame. The opposite sides of the two supporting rods are rotationally connected with a roller, two hydraulic adjusting assemblies which are symmetrically arranged are fixedly installed at the top of the portal frame, and a transverse plate is arranged at the bottoms of the hydraulic adjusting assemblies. According to the welding device, the circle center of the fixed ring can be located on the axis of the ship pipeline all the time, meanwhile, the extension length of the second hydraulic telescopic rod is adjusted, the second hydraulic telescopic rod can make contact with the ship pipeline, ship pipelines of different sizes are positioned, and stable welding is achieved after the reducer pipe and the ship pipeline are in butt joint.

The invention provides a method for preparing a single-material VMPE recoverable hose through dynamic temperature control multi-layer co-extrusion. The method comprises the steps that infrared temperature measurement modules are installed on all sections of an extruder respectively to construct a dynamic temperature control system; feeding the pretreated raw materials into a corresponding extruder, and adjusting a heating device and a cooling device of a charging barrel of the extruder in real time according to a preset extrusion temperature allowable range through a dynamic temperature control system to obtain a plasticized melt; carrying out bonding treatment on the plasticized melt by utilizing an ultrasonic vibration composite technology to obtain a multi-layer reinforced melt; detecting the thickness of the pipe wall of the multi-layer reinforced melt through a hyperspectral imager and judging whether the thickness of the pipe wall is qualified or not; if not, pipe wall thickness deviation data are fed back to a dynamic temperature control system and an extruder control system to conduct linkage adjustment on extrusion parameters; and if the multi-layer reinforced melt is qualified, cooling shaping and fixed-length cutting treatment are conducted on the multi-layer reinforced melt, the finished recoverable hose is obtained, and the hose forming precision and the recovery performance are effectively improved.

The invention provides a cable protection pipe butt welding device, and relates to the technical field of welding, the cable protection pipe butt welding device comprises a welding table, two butt joint tables are arranged at the top end of the welding table, two fixing seats are fixedly mounted at the top ends of the butt joint tables, and a fixing assembly for fixing a cable protection pipe is arranged between the two fixing seats; a grinding assembly used for grinding the cable protection pipe is arranged in the middle of the welding table, the fixing assembly comprises two supporting frames fixedly connected to the top end of the butt joint table, an annular rack is rotationally connected between the two supporting frames, and a clamping assembly used for fixing the cable protection pipe is arranged on the inner wall of the annular rack. Annular guide rails are fixedly connected to the two sides of the outer surface of the annular rack, the cable protection pipe is fixed to an inner cavity of the annular rack through the clamping assembly, the cable protection pipe can rotate according to changes of the welding position through the annular rack, the flatness of the welding position is guaranteed through the grinding assembly, and the welding efficiency and quality of the device are effectively improved.

The invention discloses a steel structure butt welding adjusting device and method, and relates to the technical field of steel structure welding, the steel structure butt welding adjusting device comprises a welding table, fixing seats are symmetrically and fixedly connected to the upper end face of the welding table, steel pipe bodies are placed above the fixing seats, and the steel pipe butt welding adjusting device further comprises a steel pipe alignment detection mechanism and a welding path pretreatment mechanism; the steel pipe alignment detection mechanism comprises symmetrically-arranged circular rings, annular grooves are formed in the two sides of each circular ring, supporting frames are arranged on the two sides of each circular ring, the supporting frames are fixedly connected to the upper end face of the welding table, the circular rings are rotationally connected between the two supporting frames through the annular grooves, and annular racks are fixedly connected to the outer surfaces of the circular rings. The annular racks are in meshed connection with transmission gears, and a driving shaft is fixedly connected between the two transmission gears in a penetrating mode, so that the alignment condition can be rapidly detected after the steel pipe body is placed, a worker can rapidly conduct adjustment according to the detection result, the time for manual repeated inspection and adjustment is shortened, and the steel pipe body adjusting efficiency is improved.

The auxiliary butt joint device for pipeline welding comprises a left connecting frame and a right connecting frame, the left connecting frame and the right connecting frame are fixed in a horizontal state, and a left butt joint assembly and a right butt joint assembly which enable two pipelines to be in butt joint are arranged on the opposite sides of the left connecting frame and the right connecting frame respectively. The left butt joint assembly and the right butt joint assembly each comprise a bottom frame body, an extrusion alignment assembly, a pressing driving assembly and a supporting adjusting assembly. The extrusion alignment assembly can push the two pipelines to synchronously move in the opposite directions, so that the problems of misalignment, non-uniform gaps and the like in the butt joint process of the two pipelines are avoided, the welding effect and the welding strength of the pipelines are improved, and manual butt joint by workers is not needed; the supporting and adjusting assembly enables the center lines of the two pipelines to completely coincide, workers do not need to adjust the positions of the pipelines in the working process, the labor intensity and the engineering cost are reduced, the working progress is accelerated, and the pipeline welding efficiency is remarkably improved.

The invention relates to the technical field of laser cutting machines, and discloses a metal pipe separation machining laser cutting machine which comprises a workbench, two supporting strips are fixedly installed on the workbench, a supporting frame a is arranged on the two supporting strips, a laser cutting head is arranged on the supporting frame a, a supporting frame b is arranged on the two supporting strips, and a laser cutting head is arranged on the supporting frame b. A moving device is arranged on the supporting frame b, the moving device can drive a moving block to move to extrude one of the trapezoidal blocks along with movement, in this way, a pressure block can be driven by a lifting rod to move downwards to extrude and fix the cut metal pipe, and after the metal pipe is cut, the moving block leaves along with the pressure block; in this way, springback of the pressure spring can drive the lifting rod to move upwards through the lifting ring, so that the pressure block can be driven to move upwards, a user can move the steel pipe backwards to prepare lower side cutting, and the cut metal pipe can be moved to prepare lower side cutting when the laser cutting head cuts other metal pipes.

The invention relates to the technical field of welding clamps, in particular to a cabin equipment outfitting welding clamp and a clamping method thereof.The cabin equipment outfitting welding clamp comprises a guide rail, two sliding blocks capable of synchronously and oppositely moving are slidably clamped to the guide rail, a second limiting rod is arranged on the guide rail, a sliding plate is slidably clamped to the sliding blocks, and the second limiting rod is movably sleeved with the sliding plate; an elastic receding assembly is arranged between the sliding block and the sliding plate, the sliding plate can slide on the sliding block when pushed by external force through the elastic receding assembly, a sleeve arranged on the second limiting rod in a sleeving mode is embedded into the inner side of the sliding plate in a clamped mode, and the sleeve and the second limiting rod are matched through a first linkage mechanism. The sleeve rotates when sliding on the second limiting rod; according to the thin-wall fitting-out pipe fitting clamping device, radial and axial synchronous constraint of the thin-wall fitting-out pipe fitting can be achieved, the thin-wall fitting-out pipe fitting is not prone to loosening or deformation in the welding process, meanwhile, coaxial welding is kept, and the welding seam quality is improved.

Disclosed in the present invention is a flexible robot welding system for a middle rotary displacement pipe fitting. The flexible robot welding system comprises a clamp-type positioner and two welding systems located on two sides of the clamp-type positioner, wherein the clamp-type positioner comprises a driving wheel mechanism for driving pipe fitting to rotate and displace, and a clamp mechanism for pressing the pipe fitting; the clamp mechanism comprises a pressing wheel in contact with the pipe fitting, and a pressing-wheel driving device for driving the pressing wheel to ascend and descend, the pressing wheel rotating along with rotation of the pipe fitting and pressing the pipe fitting; the two welding systems are respectively located at two ends of the pipe fitting, and each welding system comprises a welding robot and an end pressing mechanism; and the end pressing mechanism comprises a pressing first roller in contact with the pipe fitting, and a roller driving device for driving the pressing first roller to ascend and descend, the pressing first roller rotating along with rotation of the pipe fitting and pressing the pipe fitting. The middle part and the two ends of the pipe fitting are pressed at the same time by means of the clamp-type positioner and the end pressing mechanism, such that straightness correction of the pipe fitting is achieved, thereby guaranteeing the welding quality.

The invention relates to the technical field of laser rotary cutting, and discloses a laser rotary cutting mechanism for metal part machining. Comprising a laser cutting head connected to the laser rotary cutter, a clamping and rotating mechanism connected to the laser rotary cutter, a movable push block connected to a rack of the laser rotary cutter, a suction pipe installed on the movable push block and a slag suction copper pipe connected to the suction pipe. The arc-shaped scraping plate is arranged in the slag extraction copper pipe and connected with the rotating shaft through the connecting rib, the arc-shaped scraping plate can move along with the extraction pipe, the arc-shaped scraping plate annularly rotates in the slag extraction copper pipe, the arc-shaped scraping plate can effectively scrape metal slag attached to the inner wall, corresponding to the opening, of the slag extraction copper pipe, and the metal slag can be effectively removed through the negative pressure fan of the arc-shaped scraping plate. The scraped metal slag can be smoothly pumped away and cannot be accumulated in the slag pumping copper pipe; and the arc-shaped scraping plate is matched for multiple scraping operations, so that the accumulation thickness of the metal slag on the inner wall of the slag pumping copper pipe is avoided, and the problem of pipeline blockage or unsmooth pumping caused by slag accumulation is reduced.

The invention discloses a large-diameter steel pipe butt welding device and method, and belongs to the technical field of steel pipe welding.The large-diameter steel pipe butt welding device comprises a welding mechanism, limiting mechanisms are arranged on the two sides of the welding mechanism, the welding mechanism comprises a supporting ring arranged between the two limiting mechanisms, and the bottom of the supporting ring is fixed to the top of a supporting seat; an annular rotating groove is formed in the inner circle of the supporting ring and connected with a sliding ring in a sliding fit mode, the sliding ring is fixedly connected with one side of a movable plate through a telescopic rod, and a welding gun and a grinding assembly are fixedly arranged on the other side of the movable plate. The problems that traditional large-diameter steel pipe welding is low in positioning precision and uneven in weld joint treatment are solved.

The invention discloses a welding device for automobile bent pipe fitting machining, and relates to the technical field of automobile pipe fitting machining, the welding device comprises a supporting base, a laser welding assembly and a driving mechanism used for driving the laser welding assembly to do circular motion, and a pipe fitting clamping mechanism is arranged on the supporting base; and the pipe fitting clamping mechanism comprises an elastic adaptive clamping mechanism and a straight pipe clamping mechanism. According to the device, firstly, the bent pipe fitting is centrally clamped in the vertical position through the two clamping plates, when the bent pipe fitting is clamped between the two clamping plates, the downward side of the bent pipe fitting directly extrudes the distributed sliding ejector rods, and the sliding ejector rods at different positions abut against the positions, with different curved surfaces, of the bent pipe fitting through resilience force of the corresponding supporting springs conveniently; and the lifting plate drives the other group of distributed sliding ejector rods to downwards press to the upward side of the bent pipe fitting, so that the bent pipe fitting can be conveniently clamped and positioned at positions with different curved surface degrees, the bent pipe fitting can be conveniently and stably butted with a clamped and fixed straight pipe fitting, and the welding operation can be conveniently and effectively completed.

The invention relates to the technical field of welding platforms, and discloses a multi-station turret type hardware three-dimensional welding platform which comprises a supporting box, a rotary table, a pentagonal mounting table and a protective cover plate, an intermittent feeding part is jointly arranged on the supporting box and the rotary table, and a clamping welding part is jointly arranged on the rotary table, the pentagonal mounting table and the protective cover plate. The multi-station turret type hardware three-dimensional welding platform can effectively solve the problems that in the prior art, a single tool clamp is generally adopted, a main round pipe and a single side round pipe can be clamped and welded, workpieces need to be manually and repeatedly disassembled or tools need to be adjusted, and the welding work efficiency is low; when side circular pipes need to be welded to the left side and the right side of the outer wall of a main circular pipe, due to the fact that the welding precision of the connecting positions of the main circular pipe and the side circular pipes needs to be guaranteed, the two side circular pipes are difficult to clamp at the same time and can drive the main circular pipe to synchronously do circumferential rotation, the two side circular pipes are sequentially clamped and welded, and then the overall welding efficiency is affected.

The invention relates to the technical field of steel structure machining equipment, in particular to a steel structure welding machine for building construction, which comprises a bottom plate, placing racks are symmetrically and fixedly connected to the upper surfaces of the two sides of the bottom plate, and the tops of the placing racks are circular. Through the arranged welding assembly, the welding machine can be matched with steel pipes of different sizes due to the adjustability of a first clamping plate and a second clamping plate when the steel pipes are welded, and then the practicability of the welding machine is greatly improved; a first clamping plate and a second clamping plate can automatically contract to extrude and position a steel pipe when a motor is started, the steel pipe can be automatically driven to rotate to achieve complete welding operation after positioning is completed, the whole process is automatic, the use convenience of the welding machine is greatly improved, the manual operation link is greatly reduced, and the welding efficiency is improved. And the working safety is also greatly improved.

The invention relates to the field of water guide laser cutting, in particular to air conditioner connecting pipe full-automatic machining equipment which comprises a workbench, and a three-point connecting pipe clamping device and a movable connecting pipe chuck are arranged at the top of the workbench. A two-way moving water guide laser cutting device is arranged at the position, between the three-point connecting pipe clamping device and the movable connecting pipe chuck, of the top of the workbench, a water guide groove is formed in the position, below the two-way moving water guide laser cutting device, of the top of the workbench, and the two-way moving water guide laser cutting device is driven by a two-way threaded lead screw and a first servo motor. The two sliding blocks can synchronously move in the opposite direction or the reverse direction, rapid adjustment of the distance between the lifting rollers is achieved, the device is suitable for connecting pipes with different pipe diameters, universality is high, triangular clamping is formed by the two lifting rollers and the lower pressing roller, the connecting pipes are effectively prevented from sliding or vibrating in the machining process, cutting precision and stability are ensured, and the machining efficiency is improved. The second servo motor synchronously drives the double lead screws to press downwards through belt transmission, the transverse plate drives the lower pressing roller to conduct accurate positioning, the clamping force is uniform, and deformation of the pipe fitting is avoided.

The invention belongs to the technical field of circular pipe girth welding, and discloses a building steel structure circular pipe girth welding device which comprises a working box, a connecting base fixedly arranged at the top of the working box, and connecting plates fixedly connected to the two symmetrical sides of the top of the working box. The welding head is installed at the bottom of the connecting base, the electric push rod is fixedly arranged at the top of the welding head and fixedly connected with the connecting base, the fixing mechanism is located at the top of the working box, and through cooperation of the fixing mechanism, a grinding roller, a driving assembly and other structures, the welding head is fixed to the welding head; the problems that an existing building steel structure circular pipe girth welding device is single in function, and special grinding equipment matched with the circular pipe girth welding device is lacked are solved. And the problems of welding slag, splashing, air holes, cracks, unevenness and the like existing on the surface of a welding seam after welding are difficult to realize are solved.

The all-position automatic welding system comprises a welding mechanism and the boiler pipe, an adjusting mechanism is arranged on the outer side of the welding mechanism, one end of the adjusting mechanism is connected with a turnover mechanism, a sleeving and supporting mechanism is arranged on the side face of the turnover mechanism, and the welding mechanism comprises a welding gun. The supporting air cylinders push the arc-shaped supporting frames to be close to the outer wall of the boiler pipe, the moving wheels make contact with the side supporting wheels to be supported on the outer wall of the boiler pipe, the boiler pipes with different calibers can be clamped and used conveniently through the telescopic effect of the supporting air cylinders, the application range of welding operation is widened, and self-adaptive welding operation is achieved; and through cooperation of the fixing base and the first U-shaped frame, a stable supporting effect is conveniently provided for installation of the moving wheels, the motor can stably drive the moving wheels to rotate, and the stable moving effect is achieved.

The invention relates to the technical field of special-shaped steel pipe machining, in particular to a special-shaped steel pipe welding device which comprises a welding module fixedly installed on a bottom plate, the welding module comprises a fixing frame and a power box which are fixedly installed on the bottom plate, and a second electric push rod is installed at the top of the fixing frame and fixedly connected with the top of an upper cover through a hanging rod. A rotatable upper tooth part is installed in the upper cover, a lower cover matched with the upper cover is installed on the power box, a rotatable lower tooth part with the same structure as the upper tooth part is installed on the lower cover, electromagnets used for locking the corresponding upper tooth part and the lower tooth part are installed on the upper cover and the lower cover correspondingly, and a linear moving pair is installed on the upper tooth part through a connecting block. An extension plate is installed on a sliding block of the linear moving pair, a welding machine is installed at the end, away from the sliding block, of the extension plate through an electric rotary table, and a driving motor for driving the upper tooth part and the lower tooth part is installed in the power box. The device is high in automation degree and can adapt to special-shaped steel pipes with various sections.

The invention provides an intelligent pipeline welding method and system based on data decision, and relates to the technical field of intelligent pipeline welding.The intelligent pipeline welding method comprises the steps that a welding request is responded, a groove image of a to-be-welded pipeline is obtained through an active visual sensor, groove morphology characteristic parameters of the to-be-welded pipeline are determined based on the groove image, and the to-be-welded pipeline is welded according to the groove morphology characteristic parameters. Based on the groove morphology characteristic parameters, corresponding basic layer channel arrangement rules and reference process parameters are determined from a preset layer channel arrangement database, a welding process scheme matched with the current groove is generated in combination with the groove morphology characteristic parameters, and the current groove is welded on the basis of the welding process scheme. And the welding operation is executed in the groove of the to-be-welded pipeline, the technical problems that in the prior art, the global planning capacity is deficient, the deviation correction strategy is locally lagged, and the whole-process accurate control is insufficient are solved, and the effect of improving the stability and reliability of the welding quality of the pipeline is achieved.

The invention discloses a multi-layer gradient composite polyethylene lining hose and a microwave triggering repairing method thereof, the multi-layer gradient composite polyethylene lining hose comprises a self-repairing functional layer, a reinforcing framework layer, an interface bonding layer and an outer protective layer which are sequentially compounded from inside to outside, and the invention relates to the technical field of pipeline repairing. According to the multi-layer gradient composite polyethylene lining hose and the microwave triggering repairing method thereof, through combination of a multi-layer gradient composite structure (a self-repairing layer, a reinforcing framework and a gradient interface) and a microwave triggering repairing technology, three major breakthroughs are achieved: 1) the service life of a pipeline is prolonged to 50 years (the self-repairing efficiency is greater than or equal to 85%); (2) the repairing efficiency is improved by 3 times (DN1000 pipe is less than or equal to 8 hours), (3) the energy consumption is reduced by 70% (microwave directional curing), an intelligent monitoring system (optical fiber sensing and AI analysis) ensures the construction precision (the gap is less than or equal to 2 mm), high strength (the ring stiffness is SN12 grade), low emission (the carbon emission is reduced by 65%) and wide applicability (DN300-DN3000) are achieved, and a traditional pipeline repairing mode is thoroughly innovated.

The invention relates to the technical field of composite pipes, and discloses a wear-resistant acid-corrosion-resistant environment-friendly anti-explosion PE pipe. The pipe adopts a multi-layer co-extrusion structural design, and comprises a wear-resistant inner layer, a reinforced middle layer and a protective outer layer. High-density polyethylene is used as a base material, silicon carbide particles and aluminum oxide particles with the surfaces subjected to multifunctional modification are combined to serve as reinforcing filler, and functional polyethylene is used as a base interface modification material, so that the problems that in a traditional pipe, particles and a base interface are low in bonding force, uneven in dispersion, prone to falling off and the like are solved. Carboxyl and unsaturated double bonds are introduced into the functionalized polyethylene through a maleic anhydride grafting technology, so that efficient chemical combination of particles and a matrix is realized, and the mechanical property and the chemical stability of the composite material are improved. The inner layer enhances wear resistance through high particle content, the middle layer provides support and corrosion resistance, and the outer layer improves weather resistance and protection performance of the pipe.