Tool for assisting in welding semi-square tube

Abstract

A tool for assisting in welding a semi-square tube comprises an adjusting support, an upper base, a lower base and end covers, the top of the adjusting support is movably connected with the lower end face of the lower base, the upper base and the lower base are symmetrically arranged along the axis, and the end covers are connected to the front end and the rear end of the upper base and the front end and the rear end of the lower base. The semi-square pipe body is placed between the upper base and the lower base during welding, and a plurality of adjusting blocks are arranged on the upper base and the lower base side by side. By means of the reasonable design, the semi-square pipe workpiece can be effectively fixed, the position of a welding seam can be conveniently adjusted, the repeated leveling step is reduced, and therefore the welding quality and the production efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding, in particular to a tool for assisting in welding semi-square pipes. Background Art

[0002] The manufacturing quality of the guide tube assembly for in-core components directly impacts the safe operation of nuclear power plants. Laser welding technology for the semi-square tube, a key component of the guide tube assembly, is crucial for ensuring the precision and stability of the entire assembly.

[0003] Currently, laser welding technology for semi-square tubes is still in its infancy, particularly in terms of fixtures and adjustments. Traditional welding processes rely on tools that are not suitable for these non-standard tube shapes. Existing fixtures either lack sufficient positioning accuracy or struggle to adapt to the unique geometric characteristics of semi-square tubes. This leads to significant deviations in weld level and difficulty controlling weld deformation during welding. These issues not only increase welding difficulty but can also lead to weld defects, compromising the quality and performance of the final product. Specifically, existing tools have significant deficiencies in the following areas:

[0004] 1. Traditional fixtures and fixtures cannot guarantee precise position control of semi-square tubes during welding. Especially when the weld position needs to be adjusted multiple times, repeated positioning operations increase the workload and may introduce additional errors.

[0005] 2. The thermal stress generated during welding often causes the semi-square tube to deform, and existing tools lack effective means to suppress this deformation, thus affecting the welding quality and the consistency of the parts;

[0006] 3. Due to the lack of fixing and adjustment tools designed specifically for semi-square tubes, recalibration is required every time the weld position is changed, which greatly reduces welding efficiency. Utility Model Content

[0007] In light of the aforementioned issues, the technical problem addressed by this utility model is to provide a tool for assisting in the welding of semi-square tubes, meeting the requirements for high precision, low deformation, and high efficiency during the laser welding process. Through a rational design, the tool not only effectively secures the semi-square tube workpiece but also facilitates the adjustment of the weld seam, reducing the need for repeated leveling steps, thereby improving welding quality and production efficiency.

[0008] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0009] A tool for assisting in welding semi-square tubes includes an adjustment bracket, an upper base, a lower base, and an end cover. The top of the adjustment bracket is movably connected to the lower end surface of the lower base. The upper base and the lower base are symmetrically arranged along an axis. The end covers are connected to the front and rear ends of the upper base and the lower base. When welding, the semi-square tube body is placed between the upper base and the lower base. Multiple adjustment blocks are arranged side by side on the upper base and the lower base.

[0010] In a preferred solution, the adjustment bracket includes a support column, a top plate and a support bolt; the top of the support column is vertically connected to the top plate, the support bolt is threadedly connected to the top plate, and the lower base is placed on the support bolt.

[0011] In a preferred solution, first threaded holes are correspondingly opened on the lower end surfaces of the top plate and the lower base, and locking bolts are threadedly connected to the first threaded holes to lock and fix the positions of the lower base and the top plate.

[0012] In the preferred solution, the adjustment block includes a pressure block, a clamping plate, a tightening bolt and a second connecting bolt; adjustment holes are equidistantly provided on the upper base and the lower base, a pressure block is placed in the adjustment hole, a clamping plate is provided above the pressure block, both sides of the top plate are threadedly connected to the upper base and the lower base through the second connecting bolt, a second threaded hole is provided at the center of the clamping plate, the tightening bolt is threadedly connected to the second threaded hole and is against the pressure block.

[0013] In a preferred solution, the end cover includes a side plate, and strip holes are opened at the ends of the upper base and the lower base. The first connecting bolt passes through the strip hole and is threadedly connected to the side of the side plate.

[0014] In a preferred solution, the side portion of the side panel is fixedly connected to the mounting plate, and a laser collimator is vertically mounted on the mounting plate.

[0015] In a preferred solution, a level is installed on the upper end surface of the upper base.

[0016] A tool for assisting in welding semi-square tubes has the following beneficial effects during actual use:

[0017] 1. This tool can fine-tune the height of the lower base by adjusting the support bolts on the bracket and using it in conjunction with the top plate, ensuring that the semi-square tube maintains ideal levelness during welding. In addition, the adjustment block between the upper and lower bases can accurately fix the position of the semi-square tube, avoiding welding quality problems caused by position deviation.

[0018] 2. The combination of the pressing block and the clamping plate designed in this utility model can apply uniform pressure to the surface of the semi-square tube, which helps to suppress thermal deformation during the welding process, thereby ensuring the dimensional stability and flatness of the weld after welding;

[0019] 3. By setting strip holes at the ends of the upper base and the lower base, it is convenient to fine-tune the position of the base, further ensuring the flatness of the base;

[0020] 4. The laser collimator on the end cover can conveniently and accurately measure the horizontality of the weld, avoiding welding defects caused by inaccurate positioning. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0022] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the adjusting bracket of the utility model;

[0024] Figure 3 This is a bottom view of the adjustable bracket structure of the utility model;

[0025] Figure 4 This is an enlarged schematic diagram of the regulating block structure of the utility model;

[0026] Figure 5 This is an enlarged schematic diagram of the end cover structure of the utility model;

[0027] Figure 6 It is an enlarged schematic diagram of the structure of the level instrument of the present utility model.

[0028] In the figure: adjusting bracket 1, supporting column 101, top plate 102, supporting bolt 103, first threaded hole 104, locking bolt 105, lower base 2, upper base 3, end cover 4, side plate 401, first connecting bolt 402, mounting plate 403, strip hole 404, semi-square tube body 5, adjusting block 6, pressing block 601, clamping plate 602, tightening bolt 603, second threaded hole 604, adjusting hole 605, second connecting bolt 606, laser collimator 7, level 8. DETAILED DESCRIPTION

[0029] like Figure 1 As shown, a tool for assisting in welding a semi-square tube includes an adjustment bracket 1, an upper base 3, a lower base 2, and an end cap 4. The top of the adjustment bracket 1 is movably connected to the lower end surface of the lower base 2. The upper base 3 and the lower base 2 are symmetrically arranged along an axis. The end cap 4 is connected to the front and rear ends of the upper base 3 and the lower base 2. When welding, the semi-square tube body 5 is placed between the upper base 3 and the lower base 2. A plurality of adjustment blocks 6 are arranged in parallel on the upper base 3 and the lower base 2.

[0030] The main structure of the semi-square tube body 5 is composed of two semi-square tubes with a weld on each side. There are parts inside the semi-square tube body 5. The semi-square tube body 5 needs to be placed horizontally during the welding process. The weld needs to be kept at a high level during the welding process so that the welding robot can complete the welding in one go. During the welding process, the workpiece needs to be pressurized to reduce welding deformation. Therefore, the semi-square tube body 5 is placed between the upper base 3 and the lower base 2, and is pressurized and tightened by the adjustment block 6 to ensure the overall levelness of the weld.

[0031] The preferred solution is Figure 2 and Figure 3 As shown, the adjustment bracket 1 includes a support column 101, a top plate 102 and a support bolt 103; the top of the support column 101 is vertically connected to the top plate 102, the support bolt 103 is threadedly connected to the top plate 102, and the lower base 2 is placed on the support bolt 103; the lower end surfaces of the top plate 102 and the lower base 2 are correspondingly provided with first threaded holes 104, and the locking bolt 105 is threadedly connected to the first threaded hole 104 to lock the position of the lower base 2 and the top plate 102;

[0032] During the installation process, first adjust the overall height of the support bolt 103 by rotating the support bolt 103 so that the upper end surface of the adjustment bracket 1 remains at the same level. After the support bolt 103 is adjusted, the lower base 2 is placed on the support bolt 103, and the adjustment bracket 1 and the lower base 2 are locked together by the locking bolt 105 to ensure the stability of the device.

[0033] The preferred solution is Figure 4 As shown, the adjustment block 6 includes a pressure block 601, a clamping plate 602, a tightening bolt 603 and a second connecting bolt 606; adjustment holes 605 are equidistantly opened on the upper base 3 and the lower base 2, and the pressure block 601 is placed in the adjustment hole 605. A clamping plate 602 is provided above the pressure block 601. Both sides of the top plate 102 are threadedly connected to the upper base 3 and the lower base 2 through the second connecting bolt 606. A second threaded hole 604 is opened at the center of the clamping plate 602. The tightening bolt 603 is threadedly connected to the second threaded hole 604 and abuts against the pressure block 601.

[0034] During the welding process, when it is detected that the weld is tilted downward, the adjustment block 6 on the lower base 2 can be adjusted. By rotating the tightening bolt 603 and pushing the pressing block 601 upward, the workpiece weld can be adjusted upward. Conversely, when it is detected that the weld is tilted upward, the workpiece weld can be adjusted downward by rotating the tightening bolt 603 and pushing the pressing block 601 downward.

[0035] The preferred solution is Figure 5As shown, the end cover 4 includes a side plate 401, and a strip hole 404 is opened at the end of the upper base 3 and the lower base 2. The first connecting bolt 402 passes through the strip hole 404 and is threadedly connected to the side of the side plate 401; by setting the strip hole 404, the position of the upper base 3 and the lower base 2 can be fine-tuned up and down, thereby ensuring the horizontality of the upper base 3 and the lower base 2.

[0036] The preferred solution is Figure 5 As shown, the side of the side panel 401 is fixedly connected to the mounting plate 403, and a laser collimator 7 is vertically installed on the mounting plate 403. The laser collimator 7 can project a horizontal collimation line at the weld to facilitate observation of the horizontality of the weld of the semi-square tube body 5.

[0037] The preferred solution is Figure 5 As shown, a level 8 is installed on the upper end surface of the upper base 3. By observing the level 8, the horizontality of the upper base 3 can be accurately judged.

Claims

1. A tool for assisting in welding a semi-square tube, comprising an adjustment bracket (1), an upper base (3), a lower base (2) and an end cover (4), characterized in that: The top of the adjustment bracket (1) is movably connected to the lower end surface of the lower base (2); the upper base (3) and the lower base (2) are symmetrically arranged along the axis; end covers (4) are connected to the front and rear ends of the upper base (3) and the lower base (2); the semi-square tube body (5) is placed between the upper base (3) and the lower base (2) during welding; and a plurality of adjustment blocks (6) are arranged in parallel on the upper base (3) and the lower base (2).

2. The tool for assisting in welding semi-square tubes according to claim 1, characterized in that: The adjustment bracket (1) comprises a support column (101), a top plate (102) and a support bolt (103); the top of the support column (101) is vertically connected to the top plate (102), the support bolt (103) is threadedly connected to the top plate (102), and the lower base (2) is placed on the support bolt (103).

3. The tool for assisting in welding semi-square tubes according to claim 2, characterized in that: A first threaded hole (104) is correspondingly provided on the lower end surfaces of the top plate (102) and the lower base (2), and a locking bolt (105) is threadedly connected to the first threaded hole (104) to lock and fix the position of the lower base (2) and the top plate (102).

4. The tool for assisting in welding semi-square tubes according to claim 2, characterized in that: The adjusting block (6) includes a pressure block (601), a clamping plate (602), a tightening bolt (603) and a second connecting bolt (606); the upper base (3) and the lower base (2) are provided with adjusting holes (605) at equal intervals, the pressure block (601) is placed in the adjusting hole (605), a clamping plate (602) is provided above the pressure block (601), both sides of the top plate (102) are threadedly connected to the upper base (3) and the lower base (2) through the second connecting bolt (606), a second threaded hole (604) is provided at the center of the clamping plate (602), the tightening bolt (603) is threadedly connected to the second threaded hole (604) and abuts against the pressure block (601).

5. The tool for assisting in welding semi-square tubes according to claim 1, characterized in that: The end cover (4) includes a side plate (401), and strip holes (404) are provided at the ends of the upper base (3) and the lower base (2). The first connecting bolt (402) passes through the strip hole (404) and is threadedly connected to the side of the side plate (401).

6. The tool for assisting in welding half square tubes according to claim 1, characterized in that: The side of the side plate (401) is fixedly connected to the mounting plate (403), and a laser collimator (7) is vertically mounted on the mounting plate (403).

7. The tool for assisting in welding half square tubes according to claim 1, characterized in that: A level (8) is installed on the upper end surface of the upper base (3).

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