Welding and clamping tool for tuba rib sheets

Abstract

The utility model discloses a tuba rib sheet welding and clamping tool which comprises a base. The first cross beam is arranged above the base, one end of the first cross beam is rotationally connected with the base through a bearing, a first support is fixedly arranged at the top of the other end of the first cross beam, and one side of the first support is rotationally connected with a second support through a first shaft rod; the second cross beam is arranged above the second support and is rotationally connected with the second support through a second shaft rod; the positioning assembly is fixedly arranged on the second cross beam; the clamping assembly is arranged on the second cross beam; the limiting assembly is arranged between the first support and the first shaft rod; the supporting assembly is fixedly arranged on the side, close to the bearing, of the first support. The clamping tool is simple in structure and convenient to clamp, the clamped U-shaped pipe and rib piece can rotate in multiple directions and can be erected and laid flat, convenience of welding operation is effectively improved, and welding efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of number plate processing technology, and in particular to a welding clamping fixture for number plate reinforcement. Background Technology

[0002] The tuba is the largest instrument in the brass section of an orchestra, hence its name. Due to its large size, it needs to be held while playing, thus it is also called a "holding tuba." Many models of holding tubas have ribs welded to the U-tube, which need to be clamped and fixed before welding. Existing fixing devices, once the ribs and U-tube are secured, largely prevent movement of the welded parts, making welding angles in some areas inconvenient and affecting welding efficiency. Utility Model Content

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a welding clamping fixture for U-shaped tubes and ribs, which has a simple structure, is easy to clamp, and allows the U-shaped tube and ribs to rotate in multiple directions after clamping, and can be erected and laid flat, effectively improving the convenience of welding operations and increasing welding efficiency.

[0004] This utility model provides a welding clamping fixture for rib reinforcement, comprising:

[0005] Base;

[0006] The first crossbeam is located above the base. One end of the crossbeam is rotatably connected to the base via a bearing, and the top of the other end is fixedly provided with a first support. A second support is rotatably connected to one side of the first support via a first shaft.

[0007] The second crossbeam is positioned above the second support and is rotatably connected to the second support via the second shaft.

[0008] The positioning component is fixedly mounted on the second crossbeam and is used to position the U-shaped tube holding the number.

[0009] A clamping assembly, mounted on the second crossbeam, is used to clamp the reinforcing ribs onto the U-shaped tube;

[0010] A limiting component is disposed between the first support and the first shaft, used to lock the first shaft so that it cannot rotate, and to unlock the first shaft so that it can rotate;

[0011] A support assembly is fixedly installed on the side of the first support near the bearing, and is used to support the second crossbeam and keep it horizontal after the second support rotates 90 degrees around the first shaft.

[0012] Furthermore, the positioning component includes a bracket and a tray;

[0013] The bracket is fixedly installed on the top surface of the second crossbeam, located on one side of the second shaft. Several positioning plates are evenly distributed on the top surface of the bracket along the circumference. The outer diameter of the cylinder formed by the positioning plates is in clearance fit with the inner diameter of the large end of the U-shaped tube.

[0014] The tray is fixedly mounted on the top surface of the second crossbeam on the other side of the second shaft. A positioning cylinder is fixedly mounted on the top surface of the tray, and the outer diameter of the positioning cylinder is clearance-fitted with the inner diameter of the small end of the U-shaped tube.

[0015] Furthermore, the clamping assembly includes a first bracket, a second bracket, and a clamping clip;

[0016] The first bracket is disposed on one side of the U-shaped tube, its bottom end is rotatably connected to one end of the second crossbeam, and its top end extends along the outer contour of the U-shaped tube to the top of the U-shaped tube. A first connecting seat is fixedly disposed on the top of the first bracket, one end of the connecting screw is rotatably connected to the first connecting seat, and the other end is threaded with a wing nut.

[0017] The second bracket is located on the other side of the U-shaped tube. Its bottom end is rotatably connected to the other end of the second crossbeam. Its top end extends along the outer contour of the U-shaped tube to the top of the U-shaped tube and docks with the first bracket. A second connecting seat is fixedly provided on the top of the second bracket. A connecting groove is opened on the top of the second connecting seat corresponding to the connecting screw.

[0018] The inner sides of the first and second supports are provided with a plurality of clamping clips. One end of each clamping clip is provided with a clamping head adapted to the rib, and the other end is provided with a guide groove adapted to the corresponding first or second support. The first and second supports are provided with clamping rods that correspond one-to-one with the clamping clips. The clamping rods are rotatably connected to the corresponding first or second support. One end of the clamping rod passes through the first or second support and is threadedly connected to the corresponding clamping clip, and the other end is fixedly provided with a rotating handle.

[0019] Furthermore, the first bracket has a positioning groove at one end near the second bracket; the second bracket has a positioning block at one end near the first bracket that matches the positioning groove; the positioning block can be detachably embedded in the positioning groove.

[0020] Furthermore, the limiting assembly includes a guide block, a control rod, and a limiting seat;

[0021] The guide block is fixedly installed at the bottom of the first support on the side away from the second support. A groove is formed on the outer side of the guide block in the vertical direction. A slider is slidably installed in the groove. A first limiting block is fixedly installed at the top of the slider. A limiting plate is fixedly installed on the outer side of the groove. A spring is installed at the bottom of the groove below the slider. A third shaft is fixedly connected to the outer side of the slider. A clearance groove is formed on the limiting plate corresponding to the third shaft. A fourth shaft is fixedly installed on the guide block on one side of the third shaft.

[0022] The third shaft rotatably passes through the first through hole on the control rod, the inner diameter of the first through hole being larger than the outer diameter of the third shaft, and a limit nut is threadedly connected to one end of the third shaft passing through the first through hole; the fourth shaft rotatably passes through the second through hole on the control rod.

[0023] The limiting seat is located above the slider. Its top is fixedly connected to the first shaft via a connecting rod. A limiting groove is formed at its bottom corresponding to the first limiting block. A first stop is fixedly provided on the side of the limiting groove away from the bearing. A 90-degree arc-shaped guide strip is fixedly provided on the side of the limiting groove close to the bearing. A second stop is fixedly provided at the end of the guide strip away from the limiting groove.

[0024] Furthermore, the support assembly includes a first support rod and a second support rod; one end of the first support rod is fixedly connected to the first support, and the other end extends to the side of the second support near the bearing; two second support rods are fixedly connected to the side of the first support rod near the bearing, and the first support rod and the two second support rods are located on the same horizontal plane; after the second support rotates 90 degrees about the first shaft, the two second support rods support the bottom of the second crossbeam.

[0025] Compared with the prior art, the beneficial effects of this utility model are:

[0026] The clamping fixture of this utility model includes a first crossbeam, a second crossbeam, a positioning component, a clamping component, a limiting component, and a supporting component. The positioning component positions the U-shaped tube, and the clamping component securely clamps the reinforcing rib onto the U-shaped tube, thus completing the clamping and fixing of the U-shaped tube and the reinforcing rib. At this point, the U-shaped tube and the reinforcing rib can rotate around a bearing or a second shaft. After unlocking the limiting component, the U-shaped tube and the reinforcing rib can be laid flat, facilitating welding operations at various angles for the welder.

[0027] The clamping fixture of this application has a simple structure and is easy to clamp. After clamping, the U-shaped tube and the stiffener can rotate in multiple directions and can be erected and laid flat, which effectively improves the convenience of welding operations and improves welding efficiency.

[0028] It should be understood that the description in this utility model description section is not intended to limit the key or essential features of the embodiments of this utility model, nor is it intended to restrict the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0029] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0030] Figure 1 A schematic diagram of the structure of the U-shaped tube for holding a number;

[0031] Figure 2 This is a structural diagram of the clamping fixture;

[0032] Figure 3 This is a structural schematic diagram of the first crossbeam and supporting components;

[0033] Figure 4 This is a schematic diagram of the clamping assembly.

[0034] Figure 5 This is a cross-sectional structural diagram of the clamping assembly;

[0035] Figure 6 This is an exploded view of the limiting component.

[0036] The diagram labels are as follows: 1. Base; 2. First crossbeam; 3. Second crossbeam; 4. Positioning assembly; 5. Clamping assembly; 6. Limiting assembly; 7. Support assembly; 8. U-tube;

[0037] 21. Bearing; 22. First support; 23. First shaft; 24. Second support;

[0038] 31. Second shaft;

[0039] 41. Bracket; 42. Pallet; 43. Positioning plate; 44. Positioning cylinder;

[0040] 51. First bracket; 52. Second bracket; 53. Clamping clip; 54. First connecting seat; 55. Connecting screw; 56. Wing nut; 57. Second connecting seat; 58. Connecting groove; 59. Clamping head; 510. Guide groove; 511. Clamping rod; 512. Rotating handle; 513. Positioning groove; 514. Positioning block;

[0041] 61. Guide block; 62. Control rod; 63. Limit seat; 64. Slide groove; 65. Slider; 66. First limit block; 67. Limit plate; 68. Spring; 69. Third shaft; 610. Clearance groove; 611. Fourth shaft; 612. First through hole; 613. Limit nut; 614. Second through hole; 615. Connecting rod; 616. Limit groove; 617. First stop; 618. Guide strip; 619. Second stop;

[0042] 71. First support rod; 72. Second support rod;

[0043] 81. Large end; 82. Small end; 83. Rib. Detailed Implementation

[0044] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0045] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0046] Please refer to Figures 1-6 The embodiments of this utility model provide a method comprising:

[0047] Base 1;

[0048] The first crossbeam 2 is located above the base 1. One end of the crossbeam is rotatably connected to the base 1 via a bearing 21, and the top of the other end is fixedly provided with a first support 22. A second support 24 is rotatably connected to one side of the first support 22 via a first shaft 23.

[0049] The second crossbeam 3 is located above the second support 24 and is rotatably connected to the second support 24 via the second shaft 31;

[0050] Positioning component 4 is fixedly installed on the second crossbeam 3 and is used to position the U-shaped tube 8 holding the number.

[0051] The clamping assembly 5 is set on the second crossbeam 3 and is used to clamp the stiffener 83 onto the U-shaped tube 8;

[0052] The limiting component 6 is disposed between the first support 22 and the first shaft 23, and is used to lock the first shaft 23 so that it cannot rotate, and to unlock the first shaft 23 so that it can rotate;

[0053] The support assembly 7 is fixedly installed on the side of the first support 22 near the bearing 21, and is used to support the second crossbeam 3 to keep it horizontal after the second support 24 rotates 90 degrees around the first shaft 23.

[0054] In this embodiment, when welding the U-shaped tube 8 and the reinforcing rib 83, the U-shaped tube 8 is first positioned by the positioning component 4, then the reinforcing rib 83 is placed on the U-shaped tube 8, and then the reinforcing rib 83 and the U-shaped tube 8 are clamped and fixed by the clamping component 5.

[0055] During welding, the first shaft 23 is locked by the limiting component 6 to prevent it from rotating. At this time, the U-shaped tube 8 is in a vertical state. Rotating the first crossbeam 2 can drive the U-shaped tube 8 and the rib 83 to rotate around the bearing 21 as the axis; rotating the second crossbeam 3 can drive the U-shaped tube 8 and the rib 83 to rotate around the second shaft 31 as the axis.

[0056] The first shaft 23 is unlocked by the limiting component 6, allowing it to rotate. Then, the U-shaped tube 8 and the stiffener 83 are rotated around the first shaft 23 and laid flat. The second crossbeam 3 is supported by the support component 7, with one side of the U-shaped tube 8 and the stiffener 83 facing upwards. The U-shaped tube 8 and the stiffener 83 are then erected and rotated 180 degrees around the second shaft 31. The U-shaped tube 8 and the stiffener 83 are then rotated around the first shaft 23 and laid flat, with the other side of the U-shaped tube 8 and the stiffener 83 facing upwards. This allows for rotational adjustment of the U-shaped tube 8 and the stiffener 83 at various angles, facilitating welding operations at different angles for the welder.

[0057] The clamping fixture of this application has a simple structure and is easy to clamp. After clamping, the U-shaped tube 8 and the rib 83 can rotate in multiple directions and can be erected or laid flat. During welding, the welder does not need to turn around the U-shaped tube 8 and the rib 83. Welding operations at various angles can be easily completed by adjusting the position of the U-shaped tube 8 and the rib 83, which effectively improves the convenience of welding operations and improves welding efficiency.

[0058] In a preferred embodiment, such as Figure 2 and Figure 4 As shown, the positioning component 4 includes a bracket 41 and a tray 42;

[0059] The bracket 41 is fixedly installed on the top surface of the second crossbeam 3, located on one side of the second shaft 31. Several positioning plates 43 are evenly distributed on the top surface of the bracket 41 along the circumference. The outer diameter of the cylinder formed by the several positioning plates 43 is in clearance fit with the inner diameter of the large end 81 of the U-shaped tube 8.

[0060] The tray 42 is fixedly installed on the top surface of the second crossbeam 3 on the other side of the second shaft 31. A positioning cylinder 44 is fixedly installed on the top surface of the tray 42. The outer diameter of the positioning cylinder 44 is clearance-fitted with the inner diameter of the small end 82 of the U-shaped tube 8.

[0061] In this embodiment, the distance between the bracket 41 and the tray 42 is the same as the distance between the large end 81 and the small end 82 of the U-tube 8. When positioning the U-tube 8, several positioning plates 43 are inserted into the large end 81 of the U-tube 8, and the positioning cylinder 44 is inserted into the small end 82 of the U-tube 8, thus completing the positioning of the U-tube 8. The operation is convenient and the positioning is accurate.

[0062] In a preferred embodiment, such as Figure 4 and Figure 5 As shown, the clamping assembly 5 includes a first bracket 51, a second bracket 52, and a clamping clip 53;

[0063] The first bracket 51 is located on one side of the U-shaped tube 8. Its bottom end is rotatably connected to one end of the second crossbeam 3. Its top end extends along the outer contour of the U-shaped tube 8 to the top of the U-shaped tube 8. A first connecting seat 54 is fixedly provided at the top of the first bracket 51. One end of the connecting screw 55 is rotatably connected to the first connecting seat 54, and the other end is threaded with a wing nut 56.

[0064] The second bracket 52 is located on the other side of the U-shaped tube 8. Its bottom end is rotatably connected to the other end of the second crossbeam 3. Its top end extends along the outer contour of the U-shaped tube 8 to the top of the U-shaped tube 8 and docks with the first bracket 51. A second connecting seat 57 is fixedly provided on the top of the second bracket 52. A connecting groove 58 is opened on the top of the second connecting seat 57 corresponding to the connecting screw 55.

[0065] The inner sides of the first bracket 51 and the second bracket 52 are provided with a plurality of clamping clips 53. One end of the clamping clip 53 is provided with a clamping head 59 adapted to the rib 83, and the other end is provided with a guide groove 510 adapted to the corresponding first bracket 51 or second bracket 52. The first bracket 51 and the second bracket 52 are provided with clamping rods 511 corresponding to the clamping clips 53. The clamping rods 511 are rotatably connected to the corresponding first bracket 51 or second bracket 52. One end of the clamping rod 511 passes through the first bracket 51 or second bracket 52 and is threadedly connected to the corresponding clamping clip 53, and the other end is fixedly provided with a rotating handle 512.

[0066] In this embodiment, after the U-shaped tube 8 is positioned by the positioning component 4, the rib 83 is placed on the U-shaped tube 8. Then, the first bracket 51 and the second bracket 52 are rotated to align them, and the two are fixedly connected by the connecting screw 55. At this time, each rotating handle 512 is rotated one by one. Under the threaded engagement of the clamping rod 511 and the clamping clip 53, the clamping head 59 is gradually pressed onto the rib 83 under the guidance of the guide groove 510, thus completing the clamping and fixing of the U-shaped tube 8 and the rib 83. The operation is convenient and the fixation is stable.

[0067] In a preferred embodiment, such as Figure 4 and Figure 5As shown, the first bracket 51 has a positioning groove 513 at one end near the second bracket 52; the second bracket 52 has a positioning block 514 that matches the positioning groove 513 at one end near the first bracket 51; the positioning block 514 can be separably embedded in the positioning groove 513.

[0068] In this embodiment, after the first bracket 51 and the second bracket 52 are docked, the positioning block 514 is embedded in the positioning groove 513, which effectively improves the stability of the first bracket 51 and the second bracket 52 after they are fixedly connected.

[0069] In a preferred embodiment, such as Figure 3 and Figure 6 As shown, the limiting component 6 includes a guide block 61, a control rod 62, and a limiting seat 63;

[0070] The guide block 61 is fixedly installed at the bottom of the first support 22 on the side away from the second support 24. A groove 64 is provided on the outer side of the guide block 61 in the vertical direction. A slider 65 is slidably installed in the groove 64. A first limiting block 66 is fixedly installed at the top of the slider 65. A limiting plate 67 is fixedly installed on the outer side of the groove 64. A spring 68 is installed at the bottom of the groove 64 below the slider 65. A third shaft 69 is fixedly connected to the outer side of the slider 65. A clearance groove 610 is provided on the limiting plate 67 corresponding to the third shaft 69. A fourth shaft 611 is fixedly installed on the guide block 61 on one side of the third shaft 69.

[0071] The third shaft 69 rotatably passes through the first through hole 612 on the control rod 62. The inner diameter of the first through hole 612 is larger than the outer diameter of the third shaft 69. One end of the third shaft 69 passing through the first through hole 612 is threadedly connected to a limit nut 613. The fourth shaft 611 rotatably passes through the second through hole 614 on the control rod 62.

[0072] The limiting seat 63 is located above the slider 65. Its top is fixedly connected to the first shaft 23 via a connecting rod 615. Its bottom is provided with a limiting groove 616 corresponding to the first limiting block 66. A first stop 617 is fixedly provided on the side of the limiting groove 616 away from the bearing 21. A 90-degree arc-shaped guide strip 618 is fixedly provided on the side of the limiting groove 616 close to the bearing 21. A second stop 619 is fixedly provided at the end of the guide strip 618 away from the limiting groove 616.

[0073] In this embodiment, when the rotation state of the first shaft 23 is controlled by the limiting component 6, under normal circumstances, the first limiting block 66 at the top of the slider 65 is embedded in the limiting groove 616 under the elastic support of the spring 68, locking the limiting seat 63, and the first shaft 23 cannot rotate at this time.

[0074] When the control lever 62 is rotated, the control lever 62 rotates about the fourth shaft 611 as the axis, and the control lever 62 drives the slider 65 to move down through the third shaft 69; the inner diameter of the first through hole 612 is larger than the outer diameter of the third shaft 69, which meets the requirement that the distance between the third shaft 69 and the fourth shaft 611 changes slightly when the third shaft 69 moves.

[0075] As slider 65 moves downward, it causes the first limiting block 66 to disengage from the limiting groove 616. At this time, the first stop block 617 abuts against one side of the top of slider 65, so that the limiting seat 63 can only rotate towards the side where the first stop block 617 is located, until the second stop block 619 abuts against the top of slider 65 and can no longer rotate. At this time, the first shaft 23 rotates 90 degrees, and the U-shaped tube 8 and the rib 83 are laid flat. The setting of the limiting component 6 improves the convenience of position adjustment of U-shaped tube 8 and rib 83, and facilitates welding operations.

[0076] In a preferred embodiment, such as Figure 2 and Figure 3 As shown, the support assembly 7 includes a first support rod 71 and a second support rod 72; one end of the first support rod 71 is fixedly connected to the first support 22, and the other end extends to the side of the second support 24 near the bearing 21; two second support rods 72 are fixedly connected to the side of the first support rod 71 near the bearing 21, and the first support rod 71 and the two second support rods 72 are located on the same horizontal plane; after the second support 24 rotates 90 degrees about the first shaft 23, the two second support rods 72 support the bottom of the second crossbeam 3, which improves the stability of the clamping fixture after the U-shaped tube 8 and the rib plate 83 are laid flat.

[0077] In the description of this specification, the terms "connection," "installation," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0078] In the description of this specification, the terms "one embodiment," "some embodiments," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0079] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A clamping fixture for welding reinforcing ribs, characterized in that, include: Base (1); The first crossbeam (2) is located above the base (1). One end of the crossbeam is rotatably connected to the base (1) via a bearing (21), and the top of the other end is fixedly provided with a first support (22). A second support (24) is rotatably connected to one side of the first support (22) via a first shaft (23). The second crossbeam (3) is located above the second support (24) and is rotatably connected to the second support (24) via the second shaft (31); The positioning component (4) is fixedly installed on the second crossbeam (3) and is used to position the U-shaped tube (8) holding the number. The clamping assembly (5) is disposed on the second crossbeam (3) and is used to clamp the stiffener (83) onto the U-shaped tube (8); A limiting component (6) is disposed between the first support (22) and the first shaft (23) for locking the first shaft (23) so that it cannot rotate, and unlocking the first shaft (23) so that it can rotate; The support assembly (7) is fixedly installed on the side of the first support (22) near the bearing (21) and is used to support the second crossbeam (3) to keep it horizontal after the second support (24) rotates 90 degrees around the first shaft (23).

2. The welding clamping fixture for the reinforcing ribs according to claim 1, characterized in that, The positioning component (4) includes a bracket (41) and a tray (42); The bracket (41) is fixedly installed on the top surface of the second crossbeam (3) on one side of the second shaft (31). The top surface of the bracket (41) is evenly distributed with a number of positioning plates (43) along the circumference. The outer diameter of the cylinder formed by the number of positioning plates (43) is in clearance fit with the inner diameter of the large end (81) of the U-shaped tube (8). The tray (42) is fixedly installed on the top surface of the second crossbeam (3) on the other side of the second shaft (31). A positioning cylinder (44) is fixedly installed on the top surface of the tray (42). The outer diameter of the positioning cylinder (44) is clearance-fitted with the inner diameter of the small end (82) of the U-shaped tube (8).

3. The welding clamping fixture for the reinforcing ribs according to claim 1, characterized in that, The clamping assembly (5) includes a first bracket (51), a second bracket (52), and a clamping clip (53); The first bracket (51) is located on one side of the U-shaped tube (8), its bottom end is rotatably connected to one end of the second crossbeam (3), and its top end extends along the outer contour of the U-shaped tube (8) to the top of the U-shaped tube (8). A first connecting seat (54) is fixedly provided at the top of the first bracket (51), one end of the connecting screw (55) is rotatably connected to the first connecting seat (54), and the other end is threaded with a wing nut (56). The second bracket (52) is located on the other side of the U-shaped tube (8), its bottom end is rotatably connected to the other end of the second crossbeam (3), and its top end extends along the outer contour of the U-shaped tube (8) to the top of the U-shaped tube (8) and docks with the first bracket (51). A second connecting seat (57) is fixedly provided on the top of the second bracket (52), and a connecting groove (58) is opened on the top of the second connecting seat (57) corresponding to the connecting screw (55). The inner sides of the first bracket (51) and the second bracket (52) are provided with a plurality of clamping clips (53). One end of the clamping clip (53) is provided with a clamping head (59) adapted to the rib (83), and the other end is provided with a guide groove (510) adapted to the corresponding first bracket (51) or second bracket (52). The first bracket (51) and the second bracket (52) are provided with clamping rods (511) corresponding to the clamping clips (53). The clamping rods (511) are rotatably connected to the corresponding first bracket (51) or second bracket (52). One end of the clamping rod (511) passes through the first bracket (51) or second bracket (52) and is threadedly connected to the corresponding clamping clip (53). The other end is fixedly provided with a rotating handle (512).

4. The welding clamping fixture for the reinforcing ribs according to claim 3, characterized in that, The first bracket (51) has a positioning groove (513) at one end near the second bracket (52); the second bracket (52) has a positioning block (514) that is adapted to the positioning groove (513) at one end near the first bracket (51); the positioning block (514) can be separably embedded in the positioning groove (513).

5. The welding clamping fixture for the reinforcing ribs according to claim 1, characterized in that, The limiting component (6) includes a guide block (61), a control rod (62), and a limiting seat (63); The guide block (61) is fixedly disposed at the bottom of the first support (22) on the side away from the second support (24). A groove (64) is provided on the outer side of the guide block (61) in the vertical direction. A slider (65) is slidably disposed in the groove (64). A first limiting block (66) is fixedly disposed at the top of the slider (65). A limiting plate (67) is fixedly disposed on the outer side of the groove (64). A spring (68) is disposed at the bottom of the groove (64) below the slider (65). A third shaft (69) is fixedly connected to the outer side of the slider (65). A clearance groove (610) is provided on the limiting plate (67) corresponding to the third shaft (69). A fourth shaft (611) is fixedly disposed on the guide block (61) on one side of the third shaft (69). The third shaft (69) rotatably passes through the first through hole (612) on the control rod (62), the inner diameter of the first through hole (612) being larger than the outer diameter of the third shaft (69), and a limit nut (613) is threadedly connected to one end of the third shaft (69) passing through the first through hole (612); the fourth shaft (611) rotatably passes through the second through hole (614) on the control rod (62); The limiting seat (63) is located above the slider (65). Its top is fixedly connected to the first shaft (23) via a connecting rod (615). Its bottom has a limiting groove (616) corresponding to the first limiting block (66). A first stop (617) is fixedly provided on the side of the limiting groove (616) away from the bearing (21). A 90-degree arc-shaped guide strip (618) is fixedly provided on the side of the limiting groove (616) close to the bearing (21). A second stop (619) is fixedly provided on the end of the guide strip (618) away from the limiting groove (616).

6. The welding clamping fixture for the reinforcing ribs according to claim 1, characterized in that, The support assembly (7) includes a first support rod (71) and a second support rod (72); one end of the first support rod (71) is fixedly connected to the first support (22), and the other end extends to the side of the second support (24) near the bearing (21); two second support rods (72) are fixedly connected to the side of the first support rod (71) near the bearing (21), and the first support rod (71) and the two second support rods (72) are located on the same horizontal plane; after the second support (24) rotates 90 degrees about the first shaft (23), the two second support rods (72) support the bottom of the second crossbeam (3).

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