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CN-224209321-U - Self-anchored ductile iron pipe anti-slip ring welding tool

CN224209321UCN 224209321 UCN224209321 UCN 224209321UCN-224209321-U

Abstract

The utility model discloses a self-anchored ductile cast iron pipe anti-slip ring welding fixture, including solid fixed ring, removal ring and direction subassembly, solid fixed ring with remove the ring and pass through the direction subassembly is connected, gu fixed ring with remove the ring all set up to have the ring spare of adjusting the notch, the both sides of adjusting the notch are passed through fastening assembly and are connected, just gu fixed ring with remove the coaxial setting of ring, gu fixed ring with remove the ring and pass through the direction subassembly axial relative movement; the utility model discloses guarantee to weld the fixed and can guarantee to weld the ring plane and the axial perpendicular of pipe shaft in the welding process, can ensure the welding and prevent the atress homogeneity of anticreep ring in the pipeline installation, avoid the concentrated atress of the single point position of welding the ring, ensure the reliability of pipeline installation; and meanwhile, the welding gap in the welding process is fixed, the final formed anti-slip ring is uniform in overall dimension and meets the stress requirement, and the later manual polishing work difficulty and the work intensity can be greatly reduced.

Inventors

  • SUN SHU
  • ZHAO QINGYU
  • CAI DAOLIN
  • LI BAOYU

Assignees

  • 圣戈班管道系统有限公司

Dates

Publication Date
20260508
Application Date
20250521

Claims (8)

  1. 1. The utility model provides a self-anchored ductile cast iron pipe anti-slip ring welding fixture which is characterized in that, includes solid fixed ring, removal ring and guide assembly, solid fixed ring with remove the ring and pass through guide assembly connects, gu fixed ring with remove the ring all set up to have the ring spare of adjusting the notch, the both sides of adjusting the notch pass through fastening assembly and connect, just gu fixed ring with remove the coaxial setting of ring, gu fixed ring with remove the ring and pass through guide assembly axial relative movement.
  2. 2. The self-anchored ductile iron pipe anti-slip ring welding fixture according to claim 1, wherein the fastening assembly comprises a first fixing block, a second fixing block, a fastening bolt and a fastening nut, the first fixing block and the second fixing block are respectively fixedly arranged on two sides of the adjusting notch and fixedly connected with the fixing ring or the moving ring, fastening holes are respectively formed in the first fixing block and the second fixing block, and the fastening bolt sequentially penetrates through the two fastening holes to be in threaded connection with the fastening nut.
  3. 3. The self-anchored ductile iron pipe slip-preventing ring welding fixture according to claim 1, wherein the guiding assembly comprises a first outer framework, a second outer framework and guiding rods, the first outer framework is arranged on the outer circular surface of the fixed ring, the second outer framework is arranged on the outer circular surface of the movable ring, guiding holes are formed in the first outer framework and the second outer framework, the guiding holes in the first outer framework and the second outer framework are arranged in a one-to-one correspondence manner, and one guiding rod is simultaneously arranged in the two corresponding guiding holes in a penetrating manner, and the guiding rods are arranged in parallel with the axis of the fixed ring.
  4. 4. The self-anchored ductile iron pipe slip-preventing ring welding fixture according to claim 3 wherein the first outer skeleton and the second outer skeleton are provided with at least three guide holes, the guide holes of the first outer skeleton are annularly and uniformly distributed on the axis of the fixed ring, and the guide holes of the second outer skeleton are annularly and uniformly distributed on the axis of the movable ring.
  5. 5. The self-anchored ductile iron pipe slip-preventing welding fixture according to claim 3 wherein the first outer skeleton comprises a plurality of first connecting plates, the second outer skeleton comprises a plurality of second connecting plates, the axes of the first connecting plates and the fixed ring are vertically arranged, the axes of the second connecting plates and the movable ring are vertically arranged, and the guide holes are respectively vertically arranged on the corresponding first connecting plates and the second connecting plates.
  6. 6. The self-anchored ductile iron pipe slip-preventing ring welding fixture according to claim 5 wherein the first outer skeleton further comprises a first positioning plate, the second outer skeleton comprises a second positioning plate, the first positioning plate and the end face of the fixed ring, which is close to the movable ring, are arranged in a flush manner, the second positioning plate and the end face of the movable ring, which is close to the fixed ring, are arranged in a flush manner, positioning holes are formed in the first positioning plate and the second positioning plate, the positioning holes in the first positioning plate and the second positioning plate are correspondingly arranged, positioning rods are simultaneously arranged in the corresponding two positioning holes in a penetrating manner, and scales are arranged on the positioning rods along the linear extending direction.
  7. 7. The self-anchored ductile iron pipe slip-preventing welding fixture according to claim 6 wherein said positioning hole on said first positioning plate is a threaded hole, said positioning hole on said second positioning plate is a through hole, said positioning rod is provided with a threaded section and a scale section, said scale is provided on said scale, and said threaded section is in threaded connection with said positioning hole on said first positioning plate.
  8. 8. The self-anchoring ductile iron pipe slip-off prevention welding fixture according to claim 7 wherein a stopper is provided at one end of the positioning rod, and the thread section is provided between the stopper and the scale section.

Description

Self-anchored ductile iron pipe anti-slip ring welding tool Technical Field The utility model relates to the technical field of pipe welding, in particular to a self-anchored ductile iron pipe anti-slip ring welding tool. Background The pipe jacking is used as a pipeline form for completing pipeline laying construction through a non-excavation technology, and is mainly applied to municipal highway engineering at the present stage. Compared with the traditional excavation construction, the method thoroughly solves the problems of damage to urban buildings and blockage of road traffic in the construction process, has obvious advantages in stabilizing soil layers and protecting the environment, and is very important for cities with heavy traffic, dense population, numerous ground buildings and complex underground pipelines. With the promotion of urban progress in China and the enhancement of environmental protection, the pipe jacking technology tends to become the trend of urban underground pipeline construction. The non-excavation pipeline can produce extrusion effect to surrounding soil mass in the process of dragging and laying, and meanwhile can also be subjected to acting force of the surrounding soil mass to the pipe wall, and the friction force between the outer wall of the pipe and the soil mass is overcome when the pipe joint is dragged. In order to ensure normal laying of pipelines, the pipe joint links are fixed in a buckle anchoring mode, and meanwhile, for improving the integral strength of the pipeline, the outer wall is integrally coated with a fiber concrete protective sleeve of a cylindrical structure. However, because the laying length of the actual pipeline can be uncertain to a certain extent in the construction process, after a certain pipe section is cut, a slip-stopping ring is formed on the pipe fitting by annular welding so as to be set based on specific working conditions, the slip-stopping ring surfacing forming of the welding socket of the existing cut pipe can only adopt manual welding, the position of the slip-stopping ring during welding can not always ensure the same plane, and meanwhile, the dimensional deviation of the slip-stopping ring is large, and the secondary grinding is generally required, so that the laying and dragging stress of the pipeline is easily affected. In view of the above drawbacks, the present inventors have finally achieved the present utility model through long-time studies and practices. Disclosure of utility model In order to solve the technical defects, the technical scheme adopted by the utility model is that the self-anchored ductile cast iron pipe anti-slip ring welding fixture comprises a fixed ring, a movable ring and a guide assembly, wherein the fixed ring and the movable ring are connected through the guide assembly, the fixed ring and the movable ring are both arranged as ring pieces with adjusting notches, two sides of the adjusting notches are connected through fastening assemblies, the fixed ring and the movable ring are coaxially arranged, the fixed ring and the movable ring axially and relatively move through the guide assembly, and the fixed ring and the movable ring are made of red copper. Preferably, the fastening assembly comprises a first fixing block, a second fixing block, a fastening bolt and a fastening nut, wherein the first fixing block and the second fixing block are respectively and fixedly arranged on two sides of the adjusting notch and fixedly connected with the fixing ring or the moving ring, fastening holes are formed in the first fixing block and the second fixing block, and the fastening bolt sequentially penetrates through the two fastening holes and is in threaded connection with the fastening nut. Preferably, the guide assembly comprises a first outer framework, a second outer framework and a guide rod, wherein the first outer framework is arranged on the outer circular surface of the fixed ring, the second outer framework is arranged on the outer circular surface of the movable ring, guide holes are formed in the first outer framework and the second outer framework, the guide holes in the first outer framework and the second outer framework are in one-to-one correspondence, and one guide rod penetrates through the corresponding two guide holes at the same time, and the guide rod is arranged in parallel with the axis of the fixed ring. Preferably, the first outer skeleton and the second outer skeleton are provided with at least three guide holes, the guide holes of the first outer skeleton are annularly and uniformly distributed on the axis of the fixed ring, and the guide holes of the second outer skeleton are annularly and uniformly distributed on the axis of the movable ring. Preferably, the first outer skeleton comprises a plurality of first connecting plates, the second outer skeleton comprises a plurality of second connecting plates, the first connecting plates are perpendicular to the axis of the fixed ring,