A welding device for a steel bar skeleton

Abstract

The present invention relates to the technical field of welding equipment, and particularly to a welding device for a steel bar framework, which includes a base and a welding head arranged on the base, and further includes: two arc-shaped supporting plates symmetrically arranged on the base; two steel bars are correspondingly passed through two split fixing tubes and fixed by a clamping assembly, and then the driving assembly is started to drive the two steel bars to move so that their ends are butted. After butt-joint, the welding head is used for welding, and at the same time, the rotating assembly is used to drive the two steel bars to rotate synchronously for welding to improve the welding effect. When the ends of the two steel bars are butted, the driving assembly is started again. At this time, the movement of the steel bars is blocked, resulting in the relative movement of the C-shaped plate with respect to the steel bars, and the linkage assembly is used to drive the two steel bars to move out of position, and then the driving assembly is started again to weld a section of one end of the two steel bars together, so that rapid switching between two welding modes can be realized, which is relatively convenient and practical.

Description

Technical Field

[0001] The present invention relates to the technical field of welding equipment, and specifically relates to a welding device for a steel bar framework. Background Art

[0002] Steel bars refer to steel materials used in reinforced concrete and prestressed reinforced concrete, and their cross-sections are circular, sometimes square with rounded corners. A steel bar framework is generally a three-dimensional structure formed by connecting steel bars. When connecting steel bars, a butt welding device is required for welding. In actual operation, for example, when welding two steel bars into one, there are two welding methods. One is to directly butt-weld the ends of the two steel bars, and the other is to weld a section at one end of the two steel bars together. These two methods each have their applicable scenarios, advantages, and disadvantages. In actual construction, the appropriate welding method will be selected based on factors such as the diameter of the steel bars, the required joint strength, construction conditions, and cost. However, in the existing welding equipment, when butt-welding two steel bars, two clamping structures may need to be designed for the two welding methods. Therefore, during specific use, it is necessary to disassemble and install them, which is rather troublesome. For this reason, we propose a welding device for a steel bar framework. Summary of the Invention

[0003] One technical problem to be solved by this application is: how to design a steel bar welding equipment that can automatically adapt to different butt-joint methods.

[0004] To solve the above technical problem, the embodiment of this application provides a welding device for a steel bar framework, including a base and a welding head arranged on the base, and further including:

[0005] Two arc-shaped supporting plates, symmetrically arranged on the base;

[0006] A C-shaped plate, rotatably arranged in the arc-shaped supporting plate;

[0007] A split fixed tube, arranged on the C-shaped plate, and a clamping assembly is arranged inside the split fixed tube. The two steel bars are correspondingly passed through the two split fixed tubes and clamped and fixed by the clamping assembly;

[0008] A driving assembly, arranged on the base and connected to the arc-shaped supporting plate, for driving the two steel bars to move towards each other and butt-joint;

[0009] A rotating assembly, arranged on the arc-shaped supporting plate and connected to the C-shaped plate, for driving the two steel bars to rotate relative to the arc-shaped supporting plate for cooperative welding;

[0010] A linkage assembly, arranged on the C-shaped plate and connected to the split fixed tube. After moving the two arc-shaped supporting plates to drive the two steel bars to butt-joint, while continuing to move the arc-shaped supporting plate, the linkage assembly is used to drive the split fixed tube to move relative to the C-shaped plate to drive the two steel bars to stagger.

[0011] In some embodiments, the split fixing tube includes a first arc-shaped plate and a second arc-shaped plate, and the first arc-shaped plate is rotatably connected to the second arc-shaped plate through a rotating shaft, and the first arc-shaped plate is connected to the C-shaped plate;

[0012] And an E-shaped plate is slidably connected to the first arc-shaped plate, a latch pin is fixedly connected to the E-shaped plate, a card slot is formed in the second arc-shaped plate, and one end of the latch pin is located in the card slot to connect the first arc-shaped plate and the second arc-shaped plate;

[0013] And a T-shaped sliding convex is fixedly connected to one end of the E-shaped plate, a T-shaped sliding groove is formed in the first arc-shaped plate, and the T-shaped sliding convex is located in the T-shaped sliding groove to guide and limit the sliding of the E-shaped plate.

[0014] In some embodiments, the clamping assembly includes a rectangular plate slidably disposed on the first arc-shaped plate, and a rectangular plate is also slidably disposed on the second arc-shaped plate. Pushing members are disposed on both the first arc-shaped plate and the second arc-shaped plate for pushing the rectangular plate to move and clamp the steel bar;

[0015] The pushing member includes a first electric push rod fixedly connected to the first arc-shaped plate. One end of the first electric push rod is fixedly connected to an L-shaped plate. An inclined sliding groove is formed in the rectangular plate, and a sliding column with one end located in the inclined sliding groove is fixedly connected to the L-shaped plate. Starting the first electric push rod drives the rectangular plate to move, and the pushing member on the second arc-shaped plate has the same design as that on the first arc-shaped plate.

[0016] In some embodiments, the driving assembly includes a first shaft rotatably connected to the base. Two screw rods are symmetrically and fixedly connected to the first shaft. A sliding plate is fixedly connected to the bottom end of the arc-shaped supporting plate. A first sliding groove is formed in the base. One end of the sliding plate passes through the first sliding groove, and the two screw rods respectively pass through the two sliding plates. A first driving motor is fixedly connected to the base, and the output shaft of the first driving motor is fixed to the first shaft. Starting the first driving motor drives the two arc-shaped supporting plates to move.

[0017] In some embodiments, the rotating assembly includes an arc-shaped convex fixedly connected to the C-shaped plate. A plurality of tooth grooves are equidistantly and uniformly formed in the arc-shaped convex. The C-shaped plate is rotatably connected to the arc-shaped supporting plate. Two tooth discs meshing with the tooth grooves are symmetrically and rotatably connected to the arc-shaped supporting plate. Rotating the two tooth discs drives the C-shaped plate to rotate;

[0018] And a second shaft is rotatably connected to the base. One end of the second shaft passes through the tooth disc. A guiding convex is fixedly connected to the tooth disc. A guiding groove is formed in the second shaft. One end of the guiding convex is located in the guiding groove and is slidably connected to the inner wall thereof to guide and limit the movement of the tooth disc. A second driving motor is fixedly connected to the base, and the output shaft of the second driving motor is fixed to the second shaft. Starting the second driving motor drives the C-shaped plate to rotate.

[0019] In some embodiments, the linkage assembly includes a third shaft fixedly connected to both ends of the first arc-shaped plate. Two fourth shafts are symmetrically and fixedly connected to the C-shaped plate. Link rods are rotatably connected between the two fourth shafts and the two third shafts, and the two link rods are designed to be parallel.

[0020] Moreover, a transmission member is provided between the two first arc-shaped plates. When the first arc-shaped plate on one C-shaped plate is moved, the transmission member drives the first arc-shaped plate on the other C-shaped plate to move.

[0021] In some embodiments, the transmission member includes a first syringe fixedly connected to the C-shaped plate. The first syringe is filled with hydraulic oil. A first piston is slidably connected in the first syringe. One end of the first piston is fixedly connected to a first push rod. One end of the first push rod is fixedly connected to a hollow rectangular frame, and one end of a third shaft is correspondingly located inside the hollow rectangular frame and slidably connected to its inner wall.

[0022] Moreover, two second syringes are fixedly connected to the base. The two second syringes are also filled with hydraulic oil and the two second syringes are conductively connected to the two first syringes through conduits respectively. Second pistons are slidably connected in the two second syringes. One side of each second piston is fixedly connected to a second push rod. One end of each of the two second push rods is fixedly connected to a fifth shaft. A sixth shaft is rotatably connected to the base. One end of the sixth shaft passes through the base and is fixedly connected to a lever. Sliding grooves are formed at both ends of the lever. The two fifth shafts are correspondingly located in the two sliding grooves.

[0023] And a locking assembly is provided on the base for locking the sixth shaft to lock the first arc-shaped plate.

[0024] In some embodiments, the locking assembly includes a deflecting plate fixed to one end of the sixth shaft. A bolt is threadedly connected to the deflecting plate. A positioning groove is formed on the base. One end of the bolt contacts the base. Rotating the bolt and inserting it into the positioning groove locks the first arc-shaped plate.

[0025] In some embodiments, a support frame is fixedly connected to the base. A guide rod is fixedly connected to the support frame. A mounting block is slidably connected to the guide rod. An electric push rod two is fixedly connected to the mounting block. The extending end of the electric push rod two is fixed to the welding head.

[0026] In some embodiments, a torsion spring is sleeved on the sixth shaft. The two ends of the torsion spring are respectively fixedly connected to the sixth shaft and the base. When the sixth shaft is rotated, the torsion spring is stressed and twisted to provide a self-restoring elastic force for it.

[0027] The present invention has at least the following beneficial effects:

[0028] 1. When this device is in use, two steel bars are respectively passed through two split fixing tubes and fixed by a clamping component. Then, the driving component is started to drive the two steel bars to move so that their ends are butted. After butt joint, they are welded by a welding head. At the same time, the rotating component is used to drive the two steel bars to rotate synchronously for welding, improving the welding effect.

[0029] 2. After the ends of the two steel bars are butted, the driving component is started again. At this time, the movement of the steel bars is blocked, resulting in the relative movement of the C-shaped plate with respect to the steel bars, and the linkage component is used to drive the two steel bars to move out of alignment. Then, the driving component is started again so that one section at one end of the two steel bars is joined together for welding, thereby enabling the rapid switching between two welding modes, which is relatively convenient and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0031] Figure 2 of the present invention Figure 1 is a schematic diagram of the structure from another orientation;

[0032] Figure 3 of the present invention Figure 2 is a schematic diagram of the structure from another orientation;

[0033] Figure 4 of the present invention Figure 3 is a schematic diagram of the partial structure;

[0034] Figure 5 of the present invention Figure 4 is a schematic diagram of the partial structure;

[0035] Figure 6 of the present invention Figure 5 is a schematic diagram of the partial structure;

[0036] Figure 7 of the present invention Figure 6 is a schematic diagram of the sectional structure of the part;

[0037] Figure 8 is a schematic diagram of the structure of Embodiment 2 of the present invention.

[0038] In the figure: 1 - base; 11 - welding head; 2 - arc-shaped support plate; 3 - C-shaped plate; 4 - split fixed tube; 5 - clamping assembly; 6 - driving assembly; 7 - rotating assembly; 8 - linkage assembly; 41 - first arc-shaped plate; 42 - second arc-shaped plate; 43 - E-shaped plate; 44 - pin; 45 - card slot; 46 - T-shaped sliding convex; 47 - T-shaped sliding groove; 48 - rectangular plate; 49 - pushing member; 51 - first electric push rod; 52 - L-shaped plate; 53 - inclined sliding groove; 54 - sliding column; 55 - first shaft; 56 - screw; 57 - sliding plate; 58 - first sliding groove; 59 - first driving motor; 61 - arc-shaped convex; 62 - tooth groove; 63 - toothed disc; 64 - second shaft; 65 - guiding convex; 66 - guiding groove; 67 - second driving motor; 68 - third shaft; 69 - fourth shaft; 71 - connecting rod; 72 - transmission member; 73 - first syringe; 74 - first piston; 75 - first push rod; 76 - hollow rectangular frame; 77 - second syringe; 78 - second piston; 79 - second push rod; 81 - fifth shaft; 82 - sixth shaft; 83 - lever; 84 - sliding groove; 85 - locking assembly; 86 - deflecting plate; 87 - bolt; 88 - positioning groove; 89 - support frame; 91 - guide rod; 92 - mounting block; 93 - second electric push rod; 94 - torsion spring. Detailed implementation mode

[0039] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0040] Embodiment 1: Please refer to Figures 1 - 7 , the present invention provides a technical solution: A welding device for a steel bar skeleton, including a base 1 and a welding head 11 arranged on the base 1, and further including:

[0041] Two arc-shaped support plates 2, symmetrically arranged on the base 1;

[0042] A C-shaped plate 3, rotatably arranged in the arc-shaped support plate 2;

[0043] A split fixed tube 4, arranged on the C-shaped plate 3, and a clamping assembly 5 is arranged in the split fixed tube 4. Two steel bars are correspondingly passed through the two split fixed tubes 4 and clamped and fixed by the clamping assembly 5;

[0044] A driving assembly 6, arranged on the base 1 and connected to the arc-shaped support plate 2, for driving the two steel bars to move towards each other and butt;

[0045] A rotating assembly 7, arranged on the arc-shaped support plate 2 and connected to the C-shaped plate 3, for driving the two steel bars to rotate relative to the arc-shaped support plate 2 and cooperate for welding;

[0046] The linkage assembly 8 is arranged on the C-shaped plate 3 and connected to the split fixed pipe 4. After the two arc-shaped support plates 2 are moved to drive the two steel bars to dock, the arc-shaped support plates 2 are continued to be moved while the linkage assembly 8 is used to drive the split fixed pipe 4 to move relative to the C-shaped plate 3 to drive the two steel bars to stagger.

[0047] Specifically, when the device is in use, the two steel bars are passed through the two split fixing tubes 4 respectively and fixed by the clamping assembly 5, and then the driving assembly 6 is started to drive the two steel bars to move so that their ends are butted together. After butting together, the welding head 11 is used for welding, and the rotating assembly 7 is used to drive the two steel bars to rotate synchronously for welding to improve the welding effect. At the same time, after the two ends of the steel bars are butted together, the driving assembly 6 is started again. At this time, the movement of the steel bars is blocked, causing the C-shaped plate 3 to move relative to the steel bars and the linkage assembly 8 is used to drive the two steel bars to move and dislocate, and then the driving assembly 6 is started again to weld a section of one end of the two steel bars together, which is more convenient and practical.

[0048] The split fixed pipe 4 includes an arc plate 1 41 and an arc plate 2 42, and the arc plate 1 41 is rotatably connected to the arc plate 2 42 via a rotating shaft, and the arc plate 1 41 is connected to the C-shaped plate 3;

[0049] An E-shaped plate 43 is slidably connected to the arc plate 1 41, a bayonet 44 is fixedly connected to the E-shaped plate 43, a bayonet slot 45 is provided on the arc plate 2 42, one end of the bayonet 44 is located in the bayonet slot 45 to connect the arc plate 1 41 with the arc plate 2 42;

[0050] A T-shaped sliding protrusion 46 is fixedly connected to one end of the E-shaped plate 43, and a T-shaped sliding groove 47 is opened on the arc-shaped plate 1 41. The T-shaped sliding protrusion 46 is located in the T-shaped sliding groove 47 to guide and limit the sliding of the E-shaped plate 43. Conversely, after moving the E-shaped plate 43 to drive the latch 44 to disengage from the latch groove 45, the arc-shaped plate 2 42 can be opened, so that the welded steel bars can be easily taken out.

[0051] The clamping assembly 5 includes a rectangular plate 48 slidably disposed on the arc plate 1 41, and a rectangular plate 48 is also slidably disposed on the arc plate 2 42. A pusher 49 is disposed on both the arc plate 1 41 and the arc plate 2 42 for pushing the rectangular plate 48 to move and clamp the steel bar;

[0052] The pushing member 49 includes an electric push rod 51 fixedly connected to the arc plate 41, one end of the electric push rod 51 is fixedly connected to an L-shaped plate 52, an inclined groove 53 is provided on the rectangular plate 48, and a sliding column 54 with one end located in the inclined groove 53 is fixedly connected to the L-shaped plate 52. Starting the electric push rod drives the L-shaped plate 52 to move, and then drives the sliding column 54 to slide along the inclined groove 53, thereby driving the rectangular plate 48 to move. The pushing member 49 on the arc plate 42 adopts the same design as that on the arc plate 41.

[0053] The driving assembly 6 includes a shaft 55 rotatably connected to the base 1 through a bearing, two screw rods 56 are symmetrically fixedly connected to the shaft 55, the two screw rods 56 are designed with opposite threads, and a slide plate 57 is fixedly connected to the bottom end of the arc-shaped support plate 2, a slide groove 58 is provided on the base 1, one end of the slide plate 57 slides through the slide groove 58, and the two screw rods 56 correspondingly pass through the two slide plates 57 and are connected to them by threads, and a driving motor 59 is fixedly connected to the base 1, and the output shaft of the driving motor 59 is fixedly connected to the shaft 55. When the driving motor 59 is started, the shaft 55 is driven to rotate, thereby driving the screw rods 56 to rotate, and then the two slide plates 57 and the arc-shaped support plate 2 move.

[0054] The rotating assembly 7 includes an arc-shaped protrusion 61 fixedly connected to the C-shaped plate 3, and a plurality of tooth grooves 62 are evenly and evenly provided on the arc-shaped protrusion 61. The C-shaped plate 3 is rotatably connected to the arc-shaped support plate 2. The arc-shaped support plate 2 is symmetrically rotatably connected to two toothed discs 63 meshing with the tooth grooves 62. Rotating the two toothed discs 63 drives the C-shaped plate 3 to rotate.

[0055] A second shaft 64 is rotatably connected to the base 1, one end of the second shaft 64 slides through the toothed disc 63, a guide protrusion 65 is fixedly connected to the toothed disc 63, a guide groove 66 is provided on the second shaft 64, one end of the guide protrusion 65 is located in the guide groove 66 and is slidably connected to the inner wall of the guide groove to guide and limit the movement of the toothed disc 63, a second drive motor 67 is fixedly connected to the base 1, the output shaft of the second drive motor 67 is fixedly connected to the second shaft 64, and the second drive motor 67 is started to drive the second shaft 64 to rotate, thereby driving the toothed disc 63 to rotate to drive the C-shaped plate 3 to rotate relative to the arc-shaped support plate 2.

[0056] The linkage assembly 8 includes a shaft 3 68 fixedly connected to both ends of the arc-shaped plate 1 41, two shafts 4 69 are symmetrically fixedly connected to the C-shaped plate 3, and a connecting rod 71 is rotatably connected between the two shafts 4 69 and the two shafts 3 68 through a bearing, and the two connecting rods 71 ​​are designed to be parallel;

[0057] A transmission member 72 is provided between the two arc plates 41. When one arc plate 41 is moved relative to the C-shaped plate 3, the transmission member 72 is used to drive the other arc plate 41 to move. Specifically, when the ends of the two steel bars are in contact, the arc support plate 2 is continued to be moved to drive the C-shaped plate 3 to move relative to the arc plate 41, and then the connecting rod 71 is used to drive the arc plate 41 and the steel bars to approach the edge of the C-shaped plate 3 to stagger the two steel bars. The initial positions of the arc plate 41 and the arc plate 2 42 are at the center of the C-shaped plate 3.

[0058] The transmission member 72 includes a first syringe barrel 73 fixedly connected to the C-shaped plate 3. The first syringe barrel 73 is filled with hydraulic oil. A first piston 74 is slidably connected in the first syringe barrel 73. One end of the first piston 74 is fixedly connected to a first push rod 75. One end of the first push rod 75 is fixedly connected to a hollow rectangular frame 76. One end of a third shaft 68 is correspondingly located inside the hollow rectangular frame 76 and is slidably connected to its inner wall. Moving the first arc-shaped plate 41 relative to the C-shaped plate 3 uses the third shaft 68 to push the first push rod 75 to move, thereby driving the first piston 74 to move and eject the hydraulic oil.

[0059] And two second syringe barrels 77 are fixedly connected to the base 1. The two second syringe barrels 77 are also filled with hydraulic oil and the two second syringe barrels 77 are correspondingly connected in communication with the two first syringe barrels 73 through conduits. A second piston 78 is slidably connected in each of the two second syringe barrels 77. One side of the second piston 78 is fixedly connected to a second push rod 79. One end of each of the two second push rods 79 is fixedly connected to a fifth shaft 81. And a sixth shaft 82 is rotatably connected to the base 1. One end of the sixth shaft 82 passes through the base 1 and is fixedly connected to a lever 83. Sliding grooves 84 are provided at both ends of the lever 83. The two fifth shafts 81 are correspondingly located inside the two sliding grooves 84 and are slidably connected to their inner walls. Specifically, when moving the first arc-shaped plate 41 inside one of the C-shaped plates 3, the hydraulic oil in the first syringe barrel 73 is ejected into the corresponding second syringe barrel 77, thereby driving the second piston 78 to move and drive the second push rod 79 to move. Then, the lever 83 is used to pull the other second piston 78 to move, thereby driving the other first arc-shaped plate 41 to move, so as to ensure that the two first arc-shaped plates 41 always move synchronously, so as to ensure that the butt joint seam is in the central position when two identical steel bars are welded, which is convenient for subsequent welding operations and improves the stability of the device during operation.

[0060] And a locking assembly 85 is provided on the base 1 for locking the sixth shaft 82 to lock the first arc-shaped plate 41, thereby preventing the ends of the two steel bars from being misaligned when the ends of the two steel bars are butt-welded.

[0061] The locking assembly 85 includes a deflecting plate 86 fixed to one end of the sixth shaft 82. A bolt 87 is threadedly connected to the deflecting plate 86. A positioning groove 88 is provided on the base 1. One end of the bolt 87 contacts the base 1. Rotating the bolt 87 and inserting it into the positioning groove 88 to lock the first arc-shaped plate 41.

[0062] A support frame 89 is fixedly connected to the base 1. A guide rod 91 is fixedly connected to the support frame 89. A mounting block 92 is slidably connected to the guide rod 91. An electric push rod 93 is fixedly connected to the mounting block 92. The extending end of the electric push rod 93 is fixed to the welding head 11, which is convenient for moving the welding head 11 for welding operations.

[0063] Embodiment 2: Please refer to Figures 1 - 8 , the present invention provides a technical solution: Embodiment 2 is an optimization based on Embodiment 1;

[0064] A torsion spring 94 is sleeved on the sixth shaft 82. Two ends of the torsion spring 94 are fixedly connected to the sixth shaft 82 and the base 1 respectively. When the sixth shaft 82 rotates, the torsion spring 94 is stressed and twisted to provide a self-return elastic force for it, thereby facilitating automatic resetting of the device after use, which is relatively convenient and practical.

[0065] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0066] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A welding device for a steel frame, comprising a base (1) and a welding head (11) arranged on the base (1), characterized in that: Also included are: Two arc-shaped support plates (2) are symmetrically arranged on the base (1); A C-shaped plate (3) rotatably disposed within the arc-shaped support plate (2); A split fixing pipe (4) is arranged on the C-shaped plate (3), and a clamping assembly (5) is arranged inside the split fixing pipe (4), and two steel bars are passed through the two split fixing pipes (4) respectively and clamped and fixed by the clamping assembly (5); A driving assembly (6) is arranged on the base (1) and connected to the arc-shaped support plate (2), and is used to drive the two steel bars to move towards each other and dock; A rotating assembly (7) is disposed on the arc-shaped support plate (2) and connected to the C-shaped plate (3), and is used to drive the two steel bars to rotate relative to the arc-shaped support plate (2) for cooperative welding; A linkage assembly (8) is arranged on the C-shaped plate (3) and connected to the split fixing pipe (4). After the two arc-shaped support plates (2) drive the two steel bars to dock, the arc-shaped support plates (2) are moved to drive the split fixing pipe (4) to move relative to the C-shaped plate (3) using the linkage assembly (8) to drive the two steel bars to stagger. The split fixed tube (4) comprises an arc-shaped plate 1 (41) and an arc-shaped plate 2 (42), and the arc-shaped plate 1 (41) is rotatably connected to the arc-shaped plate 2 (42) via a rotating shaft, the arc-shaped plate 1 (41) is connected to the C-shaped plate (3), the linkage assembly (8) comprises a shaft 3 (68) fixedly connected to both ends of the arc-shaped plate 1 (41), two shafts 4 (69) are symmetrically fixedly connected to the C-shaped plate (3), connecting rods (71) are rotatably connected between the two shafts 4 (69) and the two shafts 3 (68), and the two connecting rods (71) are designed to be parallel; A transmission member (72) is provided between the two arc-shaped plates (41) for driving the other arc-shaped plate (41) to move when one arc-shaped plate (41) is moved.

2. The welding device for steel bar skeleton according to claim 1, characterized in that: The split fixed pipe (4) further comprises an E-shaped plate (43) slidably connected to the first arc-shaped plate (41), a bayonet (44) being fixedly connected to the E-shaped plate (43), a bayonet groove (45) being provided on the second arc-shaped plate (42), one end of the bayonet groove (44) being located in the bayonet groove (45) to connect the first arc-shaped plate (41) with the second arc-shaped plate (42); A T-shaped sliding protrusion (46) is fixedly connected to one end of the E-shaped plate (43), a T-shaped sliding groove (47) is provided on the arc-shaped plate (41), and the T-shaped sliding protrusion (46) is located in the T-shaped sliding groove (47) to guide and limit the sliding of the E-shaped plate (43).

3. The welding device for steel bar skeleton according to claim 2, characterized in that: The clamping assembly (5) comprises a rectangular plate (48) slidably arranged on the first arc plate (41), and the second arc plate (42) is also slidably arranged with a rectangular plate (48), and both the first arc plate (41) and the second arc plate (42) are provided with a pushing member (49) for pushing the rectangular plate (48) to move and clamp the steel bar; The pushing member (49) comprises an electric push rod (51) fixedly connected to the arc-shaped plate (41), one end of the electric push rod (51) being fixedly connected to an L-shaped plate (52), an inclined slide groove (53) being provided on the rectangular plate (48), a slide column (54) having one end located in the inclined slide groove (53) being fixedly connected to the L-shaped plate (52), and the pushing member (49) on the arc-shaped plate (42) and the pushing member (49) on the arc-shaped plate (41) are of the same design.

4. The welding device for a steel bar skeleton according to claim 3 is characterized in that: The driving assembly (6) comprises a shaft (55) rotatably connected to the base (1), two screw rods (56) are symmetrically fixedly connected to the shaft (55), and a slide plate (57) is fixedly connected to the bottom end of the arc-shaped support plate (2), a slide groove (58) is provided on the base (1), one end of the slide plate (57) passes through the slide groove (58), and the two screw rods (56) pass through the two slide plates (57) respectively, and a driving motor (59) is fixedly connected to the base (1), and the output shaft of the driving motor (59) is fixed to the shaft (55), and when the driving motor (59) is started, the two arc-shaped support plates (2) are driven to move.

5. The welding device for steel bar skeleton according to claim 4, characterized in that: The rotating assembly (7) comprises an arc-shaped protrusion (61) fixedly connected to the C-shaped plate (3), a plurality of tooth grooves (62) being evenly and equidistantly formed on the arc-shaped protrusion (61), and the C-shaped plate (3) is rotationally connected to the arc-shaped support plate (2), and two toothed discs (63) meshing with the tooth grooves (62) are symmetrically rotationally connected to the arc-shaped support plate (2), and the rotation of the two toothed discs (63) drives the C-shaped plate (3) to rotate; A second shaft (64) is rotatably connected to the base (1), one end of the second shaft (64) passes through the toothed disc (63), a guide protrusion (65) is fixedly connected to the toothed disc (63), a guide groove (66) is provided on the second shaft (64), one end of the guide protrusion (65) is located in the guide groove (66) and is slidably connected to the inner wall thereof to guide and limit the movement of the toothed disc (63), and a second drive motor (67) is fixedly connected to the base (1), an output shaft of the second drive motor (67) is fixed to the second shaft (64), and the second drive motor (67) is started to drive the C-shaped plate (3) to rotate.

6. The welding device for a steel bar skeleton according to claim 5, characterized in that: The transmission member (72) comprises an injection cylinder (73) fixedly connected to the C-shaped plate (3), the injection cylinder (73) being filled with hydraulic oil, a piston (74) being slidably connected to the injection cylinder (73), one end of the piston (74) being fixedly connected to a push rod (75), one end of the push rod (75) being fixedly connected to a hollow rectangular frame (76), and one end of a shaft (68) being correspondingly located in the hollow rectangular frame (76) and being slidably connected to the inner wall thereof; Two injection cylinders (77) are fixedly connected to the base (1), the two injection cylinders (77) are also filled with hydraulic oil and are connected to the two injection cylinders (73) through conduits. Pistons (78) are slidably connected to the two injection cylinders (77), one side of the pistons (78) is fixedly connected to push rods (79), one end of the two push rods (79) is fixedly connected to shafts (81), and a shaft (82) is rotatably connected to the base (1), one end of the shaft (82) passes through the base (1) and is fixedly connected to a lever (83), both ends of the lever (83) are provided with sliding grooves (84), and the two shafts (81) are correspondingly located in the two sliding grooves (84); A locking assembly (85) is provided on the base (1) for locking the shaft six (82) to lock the arc-shaped plate one (41).

7. The welding device for a steel bar skeleton according to claim 6, characterized in that: The locking assembly (85) comprises a deflection plate (86) fixed to one end of the shaft six (82), a bolt (87) being threadedly connected to the deflection plate (86), a positioning groove (88) being provided on the base (1), one end of the bolt (87) being in contact with the base (1), and the bolt (87) being rotated to be inserted into the positioning groove (88) to lock the arc plate one (41).

8. The welding device for a steel bar skeleton according to claim 7, characterized in that: The base (1) is fixedly connected to a support frame (89), the support frame (89) is fixedly connected to a guide rod (91), the guide rod (91) is slidably connected to a mounting block (92), the mounting block (92) is fixedly connected to an electric push rod 2 (93), and the protruding end of the electric push rod 2 (93) is fixed to the welding head (11).

9. The welding device for a steel bar skeleton according to claim 8, characterized in that: A torsion spring (94) is sleeved on the shaft six (82), and the two ends of the torsion spring (94) are respectively fixedly connected to the shaft six (82) and the base (1). When the shaft six (82) is rotated, the torsion spring (94) is twisted to provide a self-restoring elastic force.

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