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CN-122007787-A - Pressure pipeline welding tool

CN122007787ACN 122007787 ACN122007787 ACN 122007787ACN-122007787-A

Abstract

The invention belongs to the technical field of pressure pipeline processing equipment, and particularly relates to a pressure pipeline welding fixture which comprises two groups of welding fixture bodies arranged in a mirror image arrangement mode, wherein each welding fixture body comprises a base, a roller frame is arranged above the base, a vertical lifting mechanism is arranged on one side of the vertical frame, a clamping and positioning fixture is arranged on one side of the vertical lifting mechanism, a triaxial moving mechanism is arranged above the other side of the vertical frame, a surrounding type welding mechanism is arranged at the lower output end of the triaxial moving mechanism, and a limiting and cleaning mechanism integrating clamping, limiting and cleaning functions is arranged on the outer side of the surrounding type welding mechanism on the left side. The invention adopts double-station surrounding type welding equipment to execute the welding work of the workpiece, integrates the functions of workpiece butt joint limit and cleaning before and during welding, ensures the stability and matching accuracy of the position of the workpiece in the welding period, ensures the welding forming quality of the workpiece, improves the working process and meets the use requirement.

Inventors

  • LI HONGHAO
  • XU XIAOFEI
  • Huang Tuoyu

Assignees

  • 中宝合集团有限公司

Dates

Publication Date
20260512
Application Date
20260126

Claims (8)

  1. 1. The utility model provides a pipeline under pressure welding frock, is the welding frock body that the mirror image was arranged and was set up including two sets of, its characterized in that, the welding frock body includes the base, the base top is provided with the carrier roller frame, is located the base top in the carrier roller frame outside is provided with the grudging post, grudging post one side is provided with vertical elevating system, one side of vertical elevating system is provided with centre gripping location frock, the opposite side top of grudging post is provided with triaxial moving mechanism, triaxial moving mechanism's below output is provided with surrounding type welding mechanism, is located the left side surrounding type welding mechanism's outside is provided with the spacing clean mechanism of collection clamp spacing and clean function in an organic whole.
  2. 2. The pressure pipeline welding fixture of claim 1, wherein the vertical lifting mechanism comprises a slide bar arranged on one side of the vertical frame, a sliding block is arranged on the outer side of the slide bar, a sliding seat is arranged on the outer side of the sliding block, a mounting seat is arranged above one side of the vertical frame, a vertical driving cylinder is arranged on the mounting seat, and the output end of the vertical driving cylinder is connected with the sliding seat.
  3. 3. The pressure pipeline welding fixture of claim 2, wherein the clamping positioning fixture comprises a placing frame which is connected with a movable end of a vertical lifting mechanism and is in rectangular design, an opening-closing type clamping assembly is arranged below the placing frame, the opening-closing type clamping assembly comprises a fixed seat which is arranged at an edge angle of the lower side of the placing frame, a positive and negative bidirectional screw rod is arranged between the fixed seats, screw rod nut seats are arranged on the front side and the rear side of the positive and negative bidirectional screw rod, clamping jaw parts are arranged below the screw rod nut seats on the same side in the transverse direction, each clamping jaw part comprises a movable plate, a concave seat is arranged below the inner side of the movable plate, an opening-closing type clamping cylinder which can be adjusted in a rotating mode is arranged in the concave seat, a concave plate is arranged below the outer side of the movable plate, a rotating plate is arranged on the rotating rod which is arranged outside the concave plate, clamping jaws which are in arc-shaped design are arranged on the rotating rod, one clamping jaw part and the upper end of the rotating plate are respectively connected with the two groups of the output ends of the movable plate in a symmetrical mode about the center of the placing clamping jaw part.
  4. 4. The pressure pipeline welding tool according to claim 3, wherein the opening-closing type clamping assembly is provided with a material pressing mechanism, the material pressing mechanism comprises a pressing cylinder arranged on one side of the moving plate, and the output end of the pressing cylinder is provided with a pressing plate.
  5. 5. The pressure pipeline welding fixture of claim 4, wherein the triaxial moving mechanism comprises a mounting frame connected with a vertical frame, a rodless cylinder is arranged on the mounting frame, a truss which is in concave design is arranged on the outer side of the rodless cylinder, a longitudinal moving plate is arranged at the output end of the rodless cylinder and above the truss, a vertical lifting driving cylinder is arranged on the longitudinal moving plate, a lifting plate is arranged at the output end of the vertical lifting driving cylinder, a limiting rod is arranged above the lifting plate and penetrates through the longitudinal moving plate, a limiting strip is arranged on the outer side of the lifting plate, a transverse moving plate which is in sliding adjustment with respect to the limiting strip is arranged on the outer side of the lifting plate, a transverse moving driving cylinder is arranged below the lifting plate, and the output end of the transverse moving driving cylinder is connected with the lifting plate.
  6. 6. The pressure pipeline welding tool according to claim 5, wherein the two groups of surrounding type welding mechanisms are arranged in a central symmetry mode, the surrounding type welding mechanisms comprise a frame plate which is connected with the output end of the triaxial moving mechanism and is in a C-shaped design, driving gears are arranged on the outer sides of the frame plate, transmission gears are arranged on the two sides of the driving gears, matched gears are arranged on the outer sides of the transmission gears, limiting plates in the C-shaped design are arranged at openings of the frame plate, and annular racks in the C-shaped design are arranged between the frame plate and the limiting plates.
  7. 7. The pressure pipeline welding tool according to claim 6, wherein the limiting and cleaning mechanism comprises a ring plate which rotates relative to a limiting plate positioned on the left side and rotates along with an adjacent annular rack and is designed in a C shape, a rotating rod is arranged on the outer side above the ring plate, a first connecting rod which is designed in an arc shape is arranged on one side of the rotating rod, an adjusting plate which is designed in a y shape is arranged on the lower side of the ring plate, the outer side of a short side of the adjusting plate is rotationally connected with the first connecting rod, a second connecting rod is arranged on the outer side of the adjusting plate, a linkage plate which is designed in an acute angle shape is arranged on the outer side of the other end of the ring plate, the other end of the second connecting rod is rotationally connected with one side end of the linkage plate, and limiting rollers with cleaning functions are respectively arranged on the rotating rod, the adjusting plate and the end of the linkage plate.
  8. 8. The pressure pipeline welding tool according to claim 7, wherein welding assemblies are respectively arranged on the outer side of the end part of the limiting cleaning mechanism on the left side and the outer side of the end part of the surrounding type welding mechanism on the right side, each welding assembly comprises a rodless electric cylinder, and a welding gun is arranged at the moving end of each rodless electric cylinder.

Description

Pressure pipeline welding tool Technical Field The invention belongs to the technical field of pressure pipeline processing equipment, and particularly relates to a pressure pipeline welding tool. Background In industrial production, the welding quality of pressure pipes is directly related to the safety and reliability of the fluid delivery system. Currently, welding technology in this field has mainly undergone evolution from traditional manual operation to automated mechanical welding, however both technological paths have bottlenecks that limit welding quality and production efficiency. The disadvantage ‌ of traditional manual welding is that early stage, the welding of the pressure pipeline is completely finished manually by a welder. In this way, the labor intensity of operators is extremely high, the high concentration and accurate posture are required to be kept in a severe environment for a long time, and the physical fatigue and the low working efficiency are extremely easy to cause. In addition, the manual welding process is slow, the stability of welding parameters is difficult to control accurately, the consistency of welding quality is poor, and the production requirements of modern large scale, high efficiency and high quality cannot be met. The existing automatic welding is not enough ‌, and in order to overcome the defects of manual welding, the industry gradually adopts automatic welding equipment with a manipulator. Although the method realizes automation on basic welding action, improves part of operation efficiency, the following key defects still exist: ‌ rotational damage problem ‌ due to the limited working range of the welding robot, it is often necessary to rotate the work piece to be welded during welding in order to complete the full coverage of the pipe girth weld. Mechanical stresses or vibrations generated by this rotation operation are very liable to cause damage to the weld zone that has been completed but has not yet completely cooled and solidified, such as the initiation of microcracking, deformation or stress concentration, directly compromising the final strength and tightness of the welded location. ‌ Alignment function is lost ‌. In the butt welding of pipelines, concentricity and end face alignment precision of two workpieces to be connected are preconditions for ensuring uniform welding seam formation and uniform stress. However, the existing equipment lacks an automatic centering and clamping positioning mechanism, mainly relies on visual inspection of operators or simple tools to perform preliminary positioning, and is difficult to realize accurate butt joint between workpieces, so that risks of defects such as welding misalignment and unfused are increased. ‌ Cleaning before welding is complicated ‌, and the cleanliness of a to-be-welded area of a workpiece is very important before welding. Impurities such as greasy dirt, rust, oxide layer and the like can generate welding defects such as air holes, slag inclusion and the like at high temperature. The existing automatic welding tool generally needs to clean the pipeline connecting welding part by means of manpower before carrying out processing work, and an online cleaning module is lacked in the processing process, so that the quality and appearance molding of welding seams are affected to a certain extent. Therefore, aiming at the problems that the efficiency is low, the quality fluctuation is large in the manual welding processing mode, the efficiency problem can be solved in the existing automatic scheme, but the workpiece butt joint accuracy is poor, the workpiece cleaning process is limited and the like, the welding work of the workpiece is executed by adopting the double-station surrounding type welding equipment, the workpiece butt joint limit and the pre-welding cleaning function are integrated, the stability and the matching accuracy of the position of the workpiece in a welding period are guaranteed, and meanwhile, the welding interface is cleaned to a certain extent, so that the cleanliness of the welding interface is guaranteed, the welding forming quality of the workpiece is guaranteed, the working process is improved, and the pressure pipeline welding tool for effectively meeting the use requirement is provided. Disclosure of Invention Aiming at the technical problems existing in the pipeline welding processing process, the invention provides the pressure pipeline welding tool which has the advantages of reasonable design, simple structure, convenience in processing, adoption of double-station surrounding type welding equipment for executing the welding work of the workpiece, integration of the workpiece butt joint limiting and the cleaning function before welding, guarantee of the stability and the matching accuracy of the position of the workpiece in the welding period, cleaning of the welding interface to a certain extent, guarantee of the cleanliness of the welding interface, guarantee of the w