I-beam friction stir welding tool

Abstract

The utility model discloses an I-beam friction stir welding tool which comprises a welding platform, a supporting platform, a bottom frame, a left positioning mechanism and a right positioning mechanism. The supporting platform and the bottom frame are adjacently arranged on the welding platform, the left-right positioning mechanism is installed on the bottom frame, and the supporting platform and the bottom frame are identical in structure and symmetrical. Each positioning mechanism is provided with a telescopic rod, a telescopic rod supporting seat and a support connecting seat. The two sets of support connecting seats are oppositely arranged on the bottom frame at intervals, telescopic rod connecting seats are connected between the two sets of support connecting seats to enable the support connecting seats to be suspended, the seats are platy, and the lower ends of the seats are higher than the I-shaped beams. The telescopic rods are evenly distributed on the connecting base, the connecting base is provided with a threaded sleeve, the outer wall of each telescopic rod is provided with a thread and connected to the threaded sleeve in a threaded mode, the telescopic rods are inclined, the ends of the telescopic rods can abut against the included angle position between a vertical beam in the I-shaped beam and a bottom plate, and positioning and fixing of the I-shaped beam are achieved. By means of the arrangement, the requirement for continuous welding of the I-shaped beam can be met while the I-shaped beam is fixed, and the working efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of testing technology, specifically to a friction stir welding fixture for I-beams. Background Technology

[0002] Friction stir welding requires lateral pushing and pressing operations on both sides of the weld bead to achieve a tight weld. Sufficient space must be reserved on both sides of the weld bead for the clamping structure design, and the top of the product must be flat and free of other obstructing structures. The polar compartment structure consists of multiple sets of I-beams welded side-by-side, with more than ten weld bead combinations. However, existing welding fixtures can only fix two adjacent sets of I-beams. Each time a new set of I-beams is welded, the entire workpiece must be removed from the fixture, and the I-beams must be repositioned and fixed before welding, a process that significantly reduces welding efficiency. Utility Model Content

[0003] In view of this, the present invention discloses a friction stir welding fixture for I-beams, the specific solution of which is as follows:

[0004] A friction stir welding fixture for fixing an I-beam includes a welding platform, a support bracket, a bottom frame, a left positioning mechanism, and a right positioning mechanism.

[0005] The support platform and the bottom frame are arranged adjacent to each other on the welding platform, and the left positioning mechanism and the right positioning mechanism are both arranged on the bottom frame;

[0006] The left positioning mechanism and the right positioning mechanism have the same structure and are symmetrically arranged, both including a telescopic rod, a telescopic rod support seat, and a bracket connecting seat. The bracket connecting seat is set on the bottom frame, and there are two sets of them arranged relatively at intervals. The telescopic rod support seat is connected between the two sets of bracket connecting seats, so that the telescopic rod support seat is suspended in the air. The lower end of the telescopic rod is higher than the height of the I-beam. There are several sets of telescopic rods, and the several sets of telescopic rods are evenly arranged on the telescopic rod support seat. The telescopic rod support seat is provided with a threaded sleeve, and the outer wall of the telescopic rod is provided with a thread. The telescopic rod is screwed onto the threaded sleeve. The telescopic rod is inclined so that the end of the telescopic rod can be tightened at the angle between the vertical beam and the bottom plate in the I-beam.

[0007] As a supplement to the technical solution of this utility model, the telescopic rod support seat is screwed to the bracket connecting seat, the bracket connecting seat is provided with a through hole, and the end of the telescopic rod support seat is provided with a threaded hole. The screw passes through the through hole on the bracket connecting seat and is screwed into the threaded hole of the telescopic rod support seat.

[0008] As a supplement to the technical solution of this utility model, the through holes on the bracket connecting seat are provided in two sets, namely the first through hole set and the second through hole set.

[0009] When the screw passes through the first through-hole group and is screwed into the telescopic rod support, the tilt angle of the telescopic rod support is the first tilt angle; when the screw passes through the second through-hole group and is screwed into the telescopic rod support, the tilt angle of the telescopic rod support is the second tilt angle.

[0010] The first through-hole group includes a first front through-hole and a first rear through-hole, and the second through-hole group includes a second front through-hole and a second rear through-hole;

[0011] The inclination angle of the line connecting the first front through hole and the first rear through hole is the first inclination angle of the telescopic rod support, and the inclination angle of the line connecting the second front through hole and the second rear through hole is the second inclination angle of the telescopic rod support.

[0012] As a supplement to the technical solution of this utility model, the telescopic rod includes an adjusting rod and a shaped block; the adjusting rod is provided with a threaded part, which is an annular protrusion provided on the adjusting rod, and the annular protrusion is provided with a thread for screwing with a screw sleeve; the shaped block is hinged to the adjusting rod, and the planes containing the front side surface and the lower side surface of the shaped block are perpendicular to each other.

[0013] As a supplement to the technical solution of this utility model, the telescopic rod also includes a universal joint, a connecting rod, and a ball head. The lower end of the adjusting rod is provided with a ball head, and the universal joint is provided with a ball-and-socket structure that matches the ball head. The ball head is located in the ball-and-socket structure of the universal joint. One end of the connecting rod is connected to the universal joint, and the other end is connected to the shaped block.

[0014] As a supplement to the technical solution of this utility model, a limiting through hole is provided on the adjusting rod located on the lower side of the threaded part.

[0015] As a supplement to the technical solution of this utility model, both the left positioning mechanism and the right positioning mechanism further include I-beam limiting blocks. The I-beam limiting blocks are disposed on the bottom frame. There are two sets of I-beam limiting blocks, which are spaced apart and used to clamp the I-beam.

[0016] As a supplement to the technical solution of this utility model, it also includes a gantry frame and a friction stir welding machine, wherein the friction stir welding is set on the gantry frame and located above the welding platform.

[0017] Beneficial effects: The friction stir welding fixture for I-beams disclosed in this utility model allows the workpiece to be directly moved to the support platform after welding without the need for complete disassembly from the fixture, reducing clamping time and realizing a streamlined "welding-movement-new workpiece positioning" operation, significantly improving production efficiency. In another aspect of this utility model, the telescopic rod can be adjusted for extension and retraction via a threaded connection, allowing precise control of the tightening force according to the dimensions of the I-beam, ensuring a tight fit between adjacent I-beam base plates and improving the accuracy of the weld joint. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0020] Figure 3 This is a three-dimensional structural diagram of the left and right positioning mechanisms of this utility model.

[0021] Figure 4 This is a schematic diagram of the main structure of the left and right positioning mechanisms of this utility model.

[0022] Figure 5 This is a three-dimensional structural diagram of the right positioning mechanism of this utility model.

[0023] Figure 6 This is a schematic diagram of the telescopic rod structure of this utility model.

[0024] In the diagram: 1. Welding platform, 2. Support bracket, 3. Bottom frame, 4. Left positioning mechanism, 5. Right positioning mechanism, 6. Telescopic rod, 7. Telescopic rod support seat, 8. Bracket connecting seat, 9. Screw sleeve, 10. First front end through hole, 11. First rear end through hole, 12. Second front end through hole, 13. Second rear end through hole, 14. Adjusting rod, 15. Shaped block, 16. Universal joint, 17. Connecting rod, 18. Annular protrusion, 19. Limiting through hole, 20. I-beam limiting block, 21. Gantry frame, 22. Friction stir welding machine, 23. I-beam. Detailed Implementation

[0025] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] like Figures 1 to 6 As shown, a friction stir welding fixture for I-beams includes a welding platform 1, a support platform 2, a bottom frame 3, a left positioning mechanism 4, and a right positioning mechanism 5.

[0028] The support platform 2 and the bottom frame 3 are arranged adjacent to each other on the welding platform 1. The bottom frame 3 supports the left positioning mechanism 4 and the right positioning mechanism 5. The left positioning mechanism 4 is used to fix the I-beam 23 located on the left side, and the right positioning mechanism 5 is used to fix the I-beam 23 located on the right side. Figure 4 As shown, after the welding of two adjacent I-beams 23 is completed, they are moved as a whole towards the support platform 2. The support platform 2 is used to support the welded I-beams 23.

[0029] The left positioning mechanism 4 and the right positioning mechanism 5 have the same structure and are arranged symmetrically. Both include a telescopic rod 6, a telescopic rod support 7, and a bracket connecting seat 8.

[0030] The bracket connecting seat 8 is mounted on the bottom frame 3. Two sets of bracket connecting seats 8 are arranged at intervals, and a telescopic rod support seat 7 connects the two sets of bracket connecting seats 8, allowing the telescopic rod support seat 7 to be suspended in the air. The telescopic rod support seat 7 has a plate-like structure, and its lower end is higher than the height of the I-beam 23, allowing the I-beam 23 to pass under the telescopic rod support seat 7. Several sets of telescopic rods 6 are evenly distributed on the telescopic rod support seat 7. A threaded sleeve 9 is provided on the telescopic rod support seat 7, and threads are provided on the outer wall of the telescopic rod 6. The telescopic rod 6 is screwed onto the threaded sleeve 9, realizing the extension or retraction function of the telescopic rod 6. The telescopic rod 6 is inclined, allowing its end to be tightened at the angle between the vertical beam and the bottom plate in the I-beam 23.

[0031] With the above setup, when welding adjacent I-beams 23, the left positioning mechanism 4 is used to tighten the I-beam 23 on the left side, and the right positioning mechanism 5 is used to tighten the I-beam 23 on the right side, ensuring close contact between the base plates of the two sets of I-beams 23. Then, the friction stir welding machine 22 is used to weld the two sets of I-beams 23. After welding, the friction stir welding machine 22 is withdrawn, and the telescopic rod 6 of the right positioning mechanism 5 is rotated to retract, preventing positional interference when the lower end of the telescopic rod 6 of the right positioning mechanism 5 passes under the telescopic rod support 7 of the right positioning mechanism 5. Then, the new I-beam 23 is placed at the position of the left positioning mechanism 4, and the left positioning mechanism 4 and the right positioning mechanism 5 are used to position the two sets of I-beams 23. The above fixture ensures that the workpiece does not need to be removed from the fixture as a whole, making welding and fixing simple and greatly improving welding efficiency.

[0032] As a preferred technical solution of this utility model, the telescopic rod support 7 is screwed to the bracket connecting seat 8. The bracket connecting seat 8 has a through hole, and the end of the telescopic rod support 7 has a threaded hole. The screw passes through the through hole on the bracket connecting seat 8 and is screwed into the telescopic rod support 7 to fix the telescopic rod support 7.

[0033] The I-beams 23 constituting the polar compartment come in two sizes, with different widths for their base plates. Because the telescopic rod 6 and the threaded sleeve 9 are connected by screws, the telescopic rod 6 extends in a single direction, making it difficult for its end to simultaneously reach the angle between the base plate and the vertical beam of both types of I-beams 23. To address this, preferably, the support connecting seat 8 has two sets of through holes: a first set and a second set.

[0034] When the screw passes through the first through hole group and is screwed into the telescopic rod support 7, the tilt angle of the telescopic rod support 7 is the first tilt angle; when the screw passes through the second through hole group and is screwed into the telescopic rod support 7, the tilt angle of the telescopic rod support 7 is the second tilt angle.

[0035] The first through-hole group includes a first front through-hole 10 and a first rear through-hole 11, and the second through-hole group includes a second front through-hole 12 and a second rear through-hole 13;

[0036] The inclination angle of the line connecting the first front through hole 10 and the first rear through hole 11 is the inclination angle of the telescopic rod support 7. By pre-setting the positions of the first front through hole 10 and the first rear through hole 11, as well as the positions of the second front through hole 12 and the second rear through hole 13 during through hole processing, the requirements for different inclination angles of the horizontal plate can be met. The "inclination angle of the line" specifically refers to the included angle between the planes where the connecting welding platform 1 is located.

[0037] The above settings achieve the tightening and fixing effect of different types of I-beams 23.

[0038] As a preferred embodiment of this utility model, the telescopic rod 6 includes an adjusting rod 14 and a shaped block 15. The adjusting rod 14 has a threaded portion, which is an annular protrusion 18 on the adjusting rod 14. The annular protrusion 18 has threads for screwing into a threaded sleeve 9. The shaped block 15 is hinged to the adjusting rod 14 and is used to abut against the angle between the base plate and the vertical beam of the I-beam 23. The front and lower side surfaces of the shaped block 15 are perpendicular to each other, allowing the front side surface of the shaped block 15 to fully conform to the vertical beam of the I-beam 23, and the lower side surface of the shaped block 15 to fully conform to the base plate of the I-beam 23. This increases the contact area between the shaped block 15 and the I-beam 23, preventing stress concentration and deformation of the I-beam 23.

[0039] As a supplement to the above technical solution, the telescopic rod 6 also includes a universal joint 16, a connecting rod 17, and a ball joint. The lower end of the adjusting rod 14 is provided with a ball joint, and the universal joint 16 has a ball-and-socket structure adapted to the ball joint. By rotating the ball joint within the ball-and-socket structure, the adjusting rod 14 can be adjusted in all directions relative to the universal joint 16. One end of the connecting rod 17 is connected to the universal joint 16, and the other end is connected to the shaped block 15. Through the structure of the universal joint 16, it can be ensured that the shaped block 15 can still fit tightly against the I-beam 23 even if the tilt angle of the adjusting rod 14 deviates. The shaped block 15 is hinged to the adjusting rod 14 through the universal joint 16.

[0040] As a preferred technical solution of this utility model, a limiting through hole 19 is provided on the lower side of the threaded part of the adjusting rod 14. After the welding of two adjacent I-beams 23 is completed, the telescopic rod 6 needs to be retracted so that the lower end of the telescopic rod 6 is higher than the lower end of the telescopic rod support 7. The adjusting rod 14 of the telescopic rod 6 needs to be rotated so that the threaded part is completely screwed out of the screw sleeve 9. Then, the adjusting rod 14 is pulled upward so that the limiting through hole 19 on the adjusting rod 14 is above the screw sleeve 9. Then, a long straight rod / line can be passed through the limiting through hole 19 of the adjusting rod 14 located on the right positioning mechanism 5. Due to the engagement of the long straight rod / line with the screw sleeve 9, the overall descent of the telescopic rod 6 can be prevented.

[0041] As a preferred technical solution of this utility model, the left positioning mechanism 4 or the right positioning mechanism 5 further includes an I-beam limiting block 20. The I-beam limiting block 20 is disposed on the bottom frame 3. There are two sets of I-beam limiting blocks 20, which are spaced apart and used to clamp the bottom plate of the I-beam 23 in the longitudinal direction.

[0042] As a preferred technical solution of this utility model, it also includes a gantry frame 21 and a friction stir welding machine 22. The friction stir welding is set on the gantry frame 21 and located above the welding platform 1. The I-beam 23 is welded by the friction stir welding machine 22.

[0043] The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be included within the protection scope of the present invention.

Claims

1. A I-beam friction stir welding tooling for securing a I-beam, characterized by, Includes welding platform (1), support platform (2), bottom frame (3), left positioning mechanism (4), right positioning mechanism (5); The support platform (2) and the bottom frame (3) are arranged adjacent to each other on the welding platform (1), and the left positioning mechanism (4) and the right positioning mechanism (5) are both arranged on the bottom frame (3); The left positioning mechanism (4) and the right positioning mechanism (5) have the same structure and are symmetrically arranged. Both include a telescopic rod (6), a telescopic rod support seat (7), and a bracket connecting seat (8). The bracket connecting seat (8) is set on the bottom frame (3). There are two sets of them and they are arranged at intervals. The telescopic rod support seat (7) is connected between the two sets of bracket connecting seats (8), so that the telescopic rod support seat (7) is suspended in the air. The height of its lower end is higher than that of the I-beam (23). There are several sets of telescopic rods (6), and several sets of telescopic rods (6) are evenly arranged on the telescopic rod support seat (7). The telescopic rod support seat (7) is provided with a screw sleeve (9). The outer wall of the telescopic rod (6) is provided with a thread. The telescopic rod (6) is screwed onto the screw sleeve (9). The telescopic rod (6) is inclined so that the end of the telescopic rod (6) can be tightened at the angle between the vertical beam and the bottom plate in the I-beam (23).

2. A girder friction stir welding tool according to claim 1, wherein The telescopic rod support seat (7) is screwed to the bracket connecting seat (8). The bracket connecting seat (8) has a through hole, and the end of the telescopic rod support seat (7) has a threaded hole. The screw passes through the through hole on the bracket connecting seat (8) and is screwed into the threaded hole of the telescopic rod support seat (7).

3. A girder friction stir welding tool according to claim 2, wherein The bracket connecting seat (8) has two sets of through holes, namely the first set of through holes and the second set of through holes. When the screw passes through the first through hole group and is screwed into the telescopic rod support (7), the tilt angle of the telescopic rod support (7) is the first tilt angle; when the screw passes through the second through hole group and is screwed into the telescopic rod support (7), the tilt angle of the telescopic rod support (7) is the second tilt angle. The first through-hole group includes a first front through-hole (10) and a first rear through-hole (11), and the second through-hole group includes a second front through-hole (12) and a second rear through-hole (13). The inclination angle of the line connecting the first front through hole (10) and the first rear through hole (11) is the first inclination angle of the telescopic rod support (7), and the inclination angle of the line connecting the second front through hole (12) and the second rear through hole (13) is the second inclination angle of the telescopic rod support (7).

4. The I-beam friction stir welding tooling of claim 1, wherein, The telescopic rod (6) includes an adjusting rod (14) and a shaped block (15); the adjusting rod (14) is provided with a threaded part, which is an annular protrusion (18) provided on the adjusting rod (14). The annular protrusion (18) is provided with a thread for screwing into the screw sleeve (9). The shaped block (15) is hinged to the adjusting rod (14). The front end side surface and the lower end side surface of the shaped block (15) are perpendicular to each other.

5. A girder friction stir welding tool according to claim 4, wherein The telescopic rod (6) also includes a universal joint (16), a connecting rod (17), and a ball head. The lower end of the adjusting rod (14) is provided with a ball head. The universal joint (16) is provided with a ball socket structure that matches the ball head. The ball head is located in the ball socket structure of the universal joint (16). One end of the connecting rod (17) is connected to the universal joint (16), and the other end is connected to the shaped block (15).

6. The friction stir welding fixture for I-beams according to claim 4, characterized in that, A limiting through hole (19) is provided on the adjusting rod (14) located on the lower side of the threaded part.

7. The friction stir welding fixture for I-beams according to claim 1, characterized in that, The left positioning mechanism (4) and the right positioning mechanism (5) both include I-beam limiting blocks (20). The I-beam limiting blocks (20) are set on the bottom frame (3). There are two sets of I-beam limiting blocks (20), which are spaced apart and used to clamp the I-beam (23).

8. The friction stir welding fixture for I-beams according to claim 1, characterized in that, It also includes a gantry (21) and a friction stir welding machine (22), wherein the friction stir welding is set on the gantry (21) and located above the welding platform (1).

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