All-position welding tool for welding process evaluation test piece

Abstract

The utility model relates to an all-position welding tool for a welding process evaluation test piece. The all-position welding tool comprises a stand column, a sleeve, an inclined supporting pipe and a transverse supporting pipe. The stand column is a vertical straight rod, a base is arranged at the lower end of the stand column, and the upper end of the stand column is suspended. The sleeve is a hollow straight pipe, is movably sleeved on the upright post and is detachably connected with the upright post; the diagonal bracing pipe is a hollow straight pipe and is arranged obliquely upwards, the lower end of the diagonal bracing pipe is fixedly connected with the upper part of the sleeve, the upper end of the diagonal bracing pipe is an open suspended end, and a pipe clamping structure is arranged in the suspended end; the transverse supporting pipe is a hollow straight pipe and is transversely arranged, the near end of the transverse supporting pipe is fixedly connected with the sleeve, the far end of the transverse supporting pipe is an open suspended end, and a plate clamping structure or a pipe supporting structure is arranged at the suspended end. According to the utility model, the placing requirements of welding positions of workpieces of different types can be effectively met through different transverse supporting pipes and clamping structures or supporting structures, and the accuracy of the welding positions is greatly improved.

Description

Technical Field

[0001] This utility model relates to a tooling structure, and more particularly to a tooling structure applied to welding, specifically a welding process qualification test piece all-position welding tooling. Background Art

[0002] Welding procedure qualification is the process of verifying whether the mechanical properties of a product meet the design specifications and whether the welding process parameters are reasonable through metal welding process testing. Before project construction, welding procedure qualification test pieces must be prepared according to relevant standards and specifications such as NB / T47014, GB / T31032, SY / T 0452, and DEC, as well as design documents. The welding positions for welding procedure qualification test pieces include horizontal, horizontal, vertical, overhead, and 45° angled positions. The welding methods include manual welding, TIG welding, semi-automatic welding, machine welding, and automatic welding. The size of plate test pieces is generally 350mm*500mm, with a thickness ranging from 5mm to 56mm. The length of pipe test pieces is generally 400mm, with a diameter ranging from Φ45mm to Φ711mm. Due to the different sizes and thicknesses of the welding test pieces, their weight varies from a few kilograms to tens of kilograms.

[0003] Currently, in actual welding processes, due to the lack of suitable welding platforms, welders often resort to various simple measures such as pressing, padding, and leaning to place the workpieces. This not only fails to ensure the accuracy of the welding position, but also poses significant safety hazards when manually lifting heavy, thick plates for double-sided welding.

[0004] Therefore, there is an urgent need for a multifunctional, all-around, safe and convenient tooling to better meet the welding operation requirements of welding procedure qualification test pieces. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing an all-position welding fixture for welding procedure qualification test pieces. This fixture not only fully meets the welding operation requirements of welding procedure qualification test pieces, but is also simple to operate, safe to use, and easy to promote.

[0006] The technical solution of this utility model is:

[0007] A welding procedure qualification test piece for all-position welding, comprising:

[0008] The column is a vertical rod with a base at the lower end and a suspended upper end.

[0009] The sleeve is a hollow straight tube that is movably sleeved on the column and detachably connected to the column;

[0010] The inclined support pipe is a hollow straight pipe, inclined upwards, with its lower end fixedly connected to the upper part of the sleeve, and its upper end being an open, suspended end, within which a pipe clamping structure is provided; and

[0011] At least one horizontal support tube is a hollow straight tube arranged horizontally. Its near end is fixedly connected to the sleeve, and its far end is an open, suspended end. A plate clamping structure or a tube support structure is provided at the suspended end.

[0012] Furthermore, the base is flat and has grounding bolts on it.

[0013] Furthermore, the outer wall of the sleeve is provided with a through screw hole; the column is provided with a positioning hole, so that the sleeve can be fixed to the column by bolts passing through the screw hole and the positioning hole.

[0014] Furthermore, the angle between the inclined support tube and the sleeve is 45°.

[0015] Furthermore, there are two cross bracing tubes: a first cross bracing tube and a second cross bracing tube; the first cross bracing tube and the second cross bracing tube are arranged back to back and located at the lower end of the sleeve; the suspended end of the first cross bracing tube is provided with the plate clamping structure; the suspended end of the second cross bracing tube is provided with the pipe clamping structure.

[0016] Furthermore, the pipe clamping structure is a horizontally placed U-shaped block, the width of its top plate is smaller than the width of its bottom plate, and a fastening bolt is provided on its top plate, and its side plate is fixedly connected to the suspended end of the inclined support pipe.

[0017] Furthermore, the plate clamping structure includes a clamp and a connecting rod; the clamp is a horizontally placed U-shaped block with a top plate and a bottom plate of roughly equal width, and a fastening bolt is provided on the top plate; the connecting rod is a straight rod with a diameter smaller than the inner diameter of the first cross support tube; one end of the connecting rod is connected to the side plate of the clamp, and the other end is inserted into the suspended end of the first cross support tube; the suspended end of the first cross support tube is provided with a fastening bolt, which can press the connecting rod; it also includes a crank handle; the crank handle is a straight rod with one end connected to the connecting rod and the other end suspended.

[0018] Furthermore, the pipe support structure is a straight rod with a V-shaped cross-section, and the outer diameter of its cross-section is smaller than the inner diameter of the second cross brace tube; the pipe support structure is inserted into the suspended end of the second cross brace tube; the suspended end of the cross brace tube is provided with a fastening bolt, which can press the pipe support structure tightly.

[0019] Furthermore, it also includes a plate auxiliary support; the plate auxiliary support is in the shape of an "I" and includes a support plate, a vertical tube and a pad from bottom to top, and its height is equivalent to the height of the clamp; the plate auxiliary support is placed vertically and close to the clamp, so that the plate specimen can be placed on the pad.

[0020] Furthermore, it also includes a crossbeam; the crossbeam is a straight rod, with its two ends connected to different columns via connectors, bridging the columns; the connector includes a sleeve and a connecting pipe; the sleeve is a cylindrical shape with open ends, its inner diameter being larger than the outer diameter of the column, allowing it to be fitted and detachably fixed to the column; the connecting pipe is a short tube, one end of which is connected to the outer wall of the sleeve, and the other end is suspended and open, its inner diameter being larger than the outer diameter of the crossbeam, allowing the end of the crossbeam to be inserted into the suspended end of the connecting pipe; it also includes a top support plate; the top support plate consists of multiple short plates, vertically arranged, one end of which is connected to the crossbeam, and the other end of which is suspended, capable of supporting large-diameter pipe specimens fitted onto the crossbeam.

[0021] The beneficial effects of this utility model are:

[0022] This utility model has a reasonable design, simple structure, and is easy to use. It can effectively meet the placement requirements of welding positions for different types of workpieces through different cross bracing tubes and clamping or supporting structures, greatly improving the accuracy of welding positions. Moreover, it avoids the previous manual lifting operation, eliminates safety hazards, and improves the level of operation. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model.

[0024] Figure 2 This is a structural diagram when applied to large-diameter pipelines.

[0025] Figure 3 yes Figure 2 A schematic diagram of the AA cross section.

[0026] Figure 4 This is a schematic diagram of the structure for auxiliary support of the plate.

[0027] Figure 5 This is a schematic diagram of the working state of the plate auxiliary support.

[0028] Figure 6 This is a schematic diagram of the working state of the pipe support structure. Figure 1 .

[0029] Figure 7 This is a schematic diagram of the working state of the pipe support structure. Figure 2 .

[0030] Among them, 1-base, 2-column, 3-sleeve, 4-first cross brace tube, 5-connecting rod, 6-clamp, 7-handle, 8-second cross brace tube, 9-pipe support structure, 10-diagonal brace tube, 11-pipe clamping structure, 12-connector, 13-beam, 14-top support plate, 15-ground bolt, 16-plate auxiliary support, 16-1-support plate, 16-2-upper tube, 16-3-pad plate. DETAILED DESCRIPTION

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0032] like Figures 1 to 7 As shown.

[0033] A welding process qualification test piece for all-position welding includes: a column 2, a sleeve 3, a diagonal brace 10, and a horizontal brace, etc.

[0034] The column 2 is a vertical rod with a base 1 at its lower end and its upper end suspended. The base 1 is flat, allowing it to be placed stably on the ground and ensuring the column 2 remains upright. Preferably, the base 1 is equipped with a grounding bolt 15 for a reliable and safe connection of the grounding wire during welding. Preferably, the grounding bolt is an M16 type bolt. The column is made of Φ76.9mm×4mm steel pipe.

[0035] The sleeve 3 is a hollow straight tube, its length being less than the height of the column 2, and its inner diameter slightly larger than the outer diameter of the column 2, allowing it to be movably fitted onto the column 2. Simultaneously, the outer wall of the sleeve 3 has a through-hole threaded hole, and the column 2 has a positioning hole, allowing the sleeve to be fixed to the column by bolts inserted into the threaded hole and the positioning hole. Preferably, the sleeve can be made of Φ88.9mm×4mm steel pipe.

[0036] The inclined support tube 10 is a hollow straight tube, inclined upwards at 45°. Its lower end is fixedly connected to the upper part of the sleeve 3, and its upper end is an open, suspended end, on which a tube clamping structure 11 is provided. The tube clamping structure 11 is a horizontally placed U-shaped block, with the width of its top plate being smaller than the width of its bottom plate. A fastening bolt is provided on its top plate, and its side plates are fixedly connected to the suspended end of the inclined support tube 10. In use, the tube specimen can be placed on the tube clamping structure, and the fastening bolts can be used to tighten the tube specimen, facilitating welding operations. Preferably, the tube clamping device can be made by bending a 150mm*50mm*10mm steel plate.

[0037] The cross bracing tubes consist of two parts: a first cross bracing tube 4 and a second cross bracing tube 8. The first cross bracing tube 4 and the second cross bracing tube 8 have the same structure, both being hollow straight tubes, and are positioned opposite each other at the lower end of the sleeve 3. Their proximal ends are fixedly connected to the sleeve 3, and their distal ends are open and suspended. Preferably, both the first cross bracing tube 4 and the second cross bracing tube 8 can be made of Φ60mm×3.5mm steel pipe.

[0038] The suspended end of the first cross brace tube 4 is equipped with a plate clamping structure. This plate clamping structure includes a clamp 6 and a connecting rod 5. The clamp 6 is a horizontally placed U-shaped block with a top and bottom plate of roughly equal width, and a fastening bolt is provided on the top plate. The connecting rod 5 is a straight rod with a diameter smaller than the inner diameter of the first cross brace tube 4. One end of the rod is connected to the side plate of the clamp 6, and the other end is inserted into the suspended end of the first cross brace tube 4. Simultaneously, the suspended end of the first cross brace tube 4 is equipped with a fastening bolt, which can press the connecting rod 5 tightly. During welding, a plate auxiliary support 16 can be used in conjunction. This plate auxiliary support 16 is an "I"-shaped support, consisting of a support plate 16-1, a vertical tube 16-2, and a pad plate 16-3 from bottom to top, with a height approximately equal to the height of the clamp 6. In use, the auxiliary support 16 for the plate is placed vertically near the clamp 6. The plate specimen is then clamped onto the clamp and placed on the pad, ensuring the plate specimen is securely positioned and meets welding requirements. Preferably, the support plate can be a 10mm×150mm×150mm steel plate, the upright can be a Φ48mm×3.5mm steel pipe, and the pad can be a 10mm×200mm×200mm steel plate. The clamp can be made by bending a 100mm×100mm×10mm steel plate. Additionally, the connecting rod 5 is equipped with a crank handle 7. This crank handle 7 is a straight rod, with one end connected to the connecting rod 5 and the other end suspended, allowing the operator to grip the handle and rotate the connecting rod to adjust the angle of the clamp 6, ensuring accurate positioning of the plate specimen.

[0039] The suspended end of the second cross brace tube 8 is provided with a tube clamping structure 9. This tube support structure 9 is a straight rod with a V-shaped cross-section, and the circumscribed circle diameter of its cross-section is smaller than the inner diameter of the second cross brace tube 8, allowing its proximal end to be inserted into the suspended end of the second cross brace tube 8, while ensuring its distal end remains outside the suspended end of the second cross brace tube 8. Simultaneously, the suspended end of the second cross brace tube 8 is provided with a fastening bolt, which can clamp the tube support structure 9 to prevent it from coming off or falling, and ensure its opening faces upwards. In use, the plate specimen can be fitted onto the distal end of the tube support structure as needed, or placed on the tube support structure for welding operations. Preferably, the tube support structure 9 can be made of ∠45mm×45mm angle steel.

[0040] During use, two welding positions can be adopted: horizontal or 45° oblique. For horizontal welding, place the pipe specimen above the opening of the pipe support structure, assemble it, and ensure that the misalignment does not exceed the limit. After assembly, insert the pipe specimen into the pipe support structure for welding. For 45° oblique welding, when the pipe specimen diameter is between Φ323mm and Φ406mm, due to the weight of the pipe specimen, it is necessary to ensure the stability of the tooling during manual and semi-automatic welding. In this case, the pipe specimen can be directly inserted into the 45° oblique support pipe. When the pipe specimen diameter is less than Φ323mm, a pipe clamping device should be used to fix the pipe specimen.

[0041] Furthermore, this utility model also includes a crossbeam 13. The crossbeam 13 is a straight rod with multiple top support plates 14 on it. Both ends of the crossbeam are connected to different columns 2 via connectors 12, allowing it to span between two columns for welding of pipe specimens with larger diameters. Preferably, the crossbeam can be made of Φ76.9mm×4mm steel pipe.

[0042] The connector 12 includes a sleeve and a connecting pipe. The sleeve is a cylindrical shape with open ends, and its inner diameter is larger than the outer diameter of the column 2. It has screw holes on its side walls, allowing it to be fitted onto the column and secured to the upper part of the column with bolts passing through the screw holes. The connecting pipe is a short tube, with one end connected to the outer wall of the sleeve and the other end suspended and open. Its inner diameter is larger than the outer diameter of the crossbeam 13, allowing the end of the crossbeam to be inserted into the connecting pipe and positioned between the two columns.

[0043] The top support plate 14 is a rectangular short plate, consisting of four pieces, symmetrically arranged in pairs and centered on the crossbeam. The top support plate 14 is perpendicular to the crossbeam 13. The two top support plates 14 in each pair are 180° apart. The distance between two pairs of top support plates is approximately 30cm. The top support plate can be made of 10mm×20mm×100mm steel plate. In use, two pipe specimens are fitted onto the crossbeam, and one pipe specimen is supported by a corresponding top support plate. Then, the crossbeam is raised, and both ends are inserted into the connecting pipes of the connector, allowing the pipe specimens to hang on the top support plates. An external fitting tool is then used to fix the weld joint of the pipe specimens, and welding can then be performed.

[0044] This invention can effectively meet the placement requirements of welding positions for different types of specimens by using different cross bracing tubes and clamping or supporting structures, greatly improving the accuracy of welding positions. Moreover, it avoids the previous manual lifting operation, eliminates safety hazards, and improves the level of operation.

[0045] The parts not covered in this utility model are the same as or can be implemented using existing technologies.

Claims

1. A welding procedure qualification test piece for all-position welding, characterized in that it comprises: The column is a vertical rod with a base at the lower end and a suspended upper end. The sleeve is a hollow straight tube that is movably sleeved on the column and detachably connected to the column; The inclined support pipe is a hollow straight pipe, inclined upwards, with its lower end fixedly connected to the upper part of the sleeve, and its upper end being an open, suspended end, within which a pipe clamping structure is provided; and At least one horizontal support tube is a hollow straight tube arranged horizontally. Its near end is fixedly connected to the sleeve, and its far end is an open, suspended end. A plate clamping structure or a tube support structure is provided at the suspended end.

2. The all-position welding fixture for welding procedure qualification test pieces according to claim 1, characterized in that, The base is flat and has grounding bolts on it.

3. The all-position welding fixture for welding procedure qualification test pieces according to claim 1, characterized in that, The outer wall of the sleeve is provided with a through screw hole; the column is provided with a positioning hole, so that the sleeve can be fixed to the column by bolts passing through the screw hole and the positioning hole.

4. The all-position welding fixture for welding procedure qualification test pieces according to claim 1, characterized in that, The angle between the inclined support tube and the sleeve is 45°.

5. The all-position welding fixture for welding procedure qualification test pieces according to claim 1, characterized in that, The cross bracing tube consists of two tubes: a first cross bracing tube and a second cross bracing tube; the first cross bracing tube and the second cross bracing tube are arranged back to back and located at the lower end of the sleeve; the suspended end of the first cross bracing tube is provided with the plate clamping structure; the suspended end of the second cross bracing tube is provided with the tube clamping structure.

6. The all-position welding fixture for welding procedure qualification test pieces according to claim 1, characterized in that, The pipe clamping structure is a horizontally placed U-shaped block with a top plate that is narrower than its bottom plate. It has fastening bolts on its top plate and its side plates are fixedly connected to the suspended end of the inclined support pipe.

7. The all-position welding fixture for welding procedure qualification test pieces according to claim 5, characterized in that, The plate clamping structure includes a clamp and a connecting rod; the clamp is a horizontally placed U-shaped block with a top plate and a bottom plate of roughly equal width, and a fastening bolt is provided on the top plate; the connecting rod is a straight rod with a diameter smaller than the inner diameter of the first cross support tube; one end of the connecting rod is connected to the side plate of the clamp, and the other end is inserted into the suspended end of the first cross support tube; the suspended end of the first cross support tube is provided with a fastening bolt, which can press the connecting rod; it also includes a crank handle; the crank handle is a straight rod with one end connected to the connecting rod and the other end suspended.

8. The all-position welding fixture for welding procedure qualification test pieces according to claim 5, characterized in that, The pipe support structure is a straight rod with a V-shaped cross-section, and the outer diameter of its cross-section is smaller than the inner diameter of the second cross brace. The pipe support structure is inserted into the suspended end of the second cross brace. The suspended end of the second cross brace is provided with a fastening bolt, which can press the pipe support structure.

9. The all-position welding fixture for welding procedure qualification test pieces according to claim 7, characterized in that, It also includes a plate auxiliary support; the plate auxiliary support is in the shape of an "I" and includes a support plate, a vertical tube and a pad from bottom to top, and its height is equivalent to the height of the clamp; the plate auxiliary support is placed vertically and close to the clamp, so that the plate specimen can be placed on the pad.

10. The all-position welding fixture for welding procedure qualification test pieces according to claim 1, characterized in that, It also includes a crossbeam; the crossbeam is a straight rod, with its two ends connected to different columns via connectors, bridging the columns; the connector includes a sleeve and a connecting pipe; the sleeve is a cylindrical shape with open ends, its inner diameter being larger than the outer diameter of the column, allowing it to be fitted and detachably fixed to the column; the connecting pipe is a short tube, one end of which is connected to the outer wall of the sleeve, and the other end is suspended and open, its inner diameter being larger than the outer diameter of the crossbeam, allowing the end of the crossbeam to be inserted into the suspended end of the connecting pipe; it also includes a top support plate; the top support plate consists of multiple short plates, vertically arranged, one end of which is connected to the crossbeam, and the other end is suspended, capable of supporting large-diameter pipe specimens fitted onto the crossbeam.

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