An automatic welding system and method for angle steel tower base

Abstract

The present invention relates to the technical field of angle steel tower welding, and specifically to an automatic welding system and method for an angle steel tower base, comprising a base and a storage table, and also comprising a controller, a welding mechanism, a splicing mechanism and a limiting mechanism. The welding mechanism comprises a welding gun, a rotating component, a position adjustment component and an angle adjustment component. The splicing mechanism comprises a driving component, four pushing components and eight electric clamps. The limiting mechanism comprises a tightening block, an abutting component and a lifting component. An L-shaped rod is fixedly provided on the top of the workbench, and the tightening block is fixedly provided on the bottom of the lifting component. The automatic welding system and method for an angle steel tower base of the present invention can effectively control the shape and relative position of the bottom plate and four ribs through multi-directional abutting and limiting, balance the internal stress generated by heat during the welding process of the four ribs and the bottom plate, prevent welding deformation, and thus improve the welding effect.

Description

Technical Field

[0001] The invention relates to the technical field of angle steel tower welding, and in particular to an automatic welding system and method for an angle steel tower base. Background Art

[0002] Signal towers and transmission towers usually use angle steel towers. Angle steel towers have the advantages of high strength and low construction cost, and have certain wind resistance. They are widely used in the fields of power transmission and communications. In the production process of angle steel towers, there are a lot of steel components at the base of the angle steel tower, which are generally welded by a bottom plate and multiple ribs. The bottom plate is bolted to the concrete mounting base of the angle steel tower, and the ribs are used to connect other parts of the angle steel tower. Therefore, the base is an important part of the support for the angle steel tower, and its rigidity has a relatively important impact on the overall rigidity and service life of the angle steel tower.

[0003] The existing angle steel tower base welding device has the following shortcomings:

[0004] 1. Multiple ribs cannot be spliced ​​synchronously, which will cause a certain deviation between the four ribs and the bottom plate after welding, thus affecting the uniformity of force on the base.

[0005] 2. During the welding process of the four ribs with the bottom, the heat easily causes welding deformation. The existing device is not designed with a structure that can prevent deformation, which reduces the welding quality of the base. Summary of the invention

[0006] The object of the present invention is to provide an automatic welding system and method for an angle steel tower base.

[0007] To achieve this object, the present invention adopts the following technical solutions:

[0008] Provided is an angle steel tower base automatic welding system, comprising a base and a storage platform, wherein the storage platform is arranged on the top of the base;

[0009] It also includes a controller, a welding mechanism, a splicing mechanism and a limiting mechanism;

[0010] The welding mechanism is arranged on the top of the base, and the welding mechanism includes a welding gun, a rotating assembly, a position adjustment assembly and an angle adjustment assembly;

[0011] The splicing mechanism is arranged on the base, and the splicing mechanism includes a driving assembly, four pushing assemblies and eight electric clamps. Four L-shaped plates are symmetrically arranged on the top of the base, the driving assembly is arranged between the four L-shaped plates, and four pushing assemblies are arranged at equal intervals on the top of the workbench. Every two electric clamps are arranged on one pushing assembly, and every two electric clamps are fixedly connected by a connecting plate.

[0012] The limiting mechanism is arranged on the top of the workbench, and the limiting mechanism includes a tightening block, a resistance assembly and a lifting assembly. An L-shaped rod is fixedly provided on the top of the workbench, the resistance assembly is arranged between the L-shaped rod and one of the electric clamps, a limiting rod is fixedly provided on the outer wall of the L-shaped rod, the lifting assembly is inserted into the limiting rod, the lifting assembly is fitted with the resistance assembly, and the tightening block is fixedly provided at the bottom of the lifting assembly.

[0013] Furthermore, the driving assembly includes a servo motor, a synchronous belt, four synchronous wheels and four rotating shafts, each rotating shaft is rotatably arranged on the top of an L-shaped plate, each synchronous wheel is fixed on a rotating shaft, the synchronous belt is sleeved on the outer walls of the four synchronous wheels, the servo motor is fixed on the outer wall of one of the L-shaped plates, and its output end is fixedly connected to the bottom end of one of the rotating shafts, and the servo motor is electrically connected to the controller.

[0014] Furthermore, each pushing assembly includes a rotating wheel, a connecting rod and a pushing block. The rotating wheel is fixedly arranged at the top end of one of the rotating shafts, the pushing block is fixedly arranged on the outer wall of one of the electric clamps, the connecting rod is hingedly arranged between the rotating wheel and the pushing block, and four slide rails are evenly spaced at the top of the workbench. A sliding bar is slidably arranged inside each slide rail, and each sliding bar is fixedly connected to one of the electric clamps close to the connecting rod.

[0015] Furthermore, the resistance assembly includes a first wedge block, a connecting rod and a first push plate, the first push plate is fixed on the outer wall of one of the electric clamps, the connecting rod is fixed on the top of the first push plate, the first wedge block is fixed at the end of the connecting rod away from the first push plate, a limit plate is fixed on the top of the L-shaped rod, and the first wedge block is slidably connected to the limit plate through a slider.

[0016] Furthermore, the lifting assembly includes a second wedge block, a lifting rod and a return spring. The lifting rod is fixedly arranged on the top of the tightening block, the second wedge block is fixedly arranged on the top of the lifting rod, the return spring is sleeved on the outer wall of the lifting rod, and a limiting ring is fixedly arranged on the outer wall of the lifting rod. The limiting rod and the limiting ring respectively contact with the two ends of the return spring, the second wedge block is fitted with the first wedge block, and the top of the second wedge block is slidably connected with the bottom of the first wedge block.

[0017] Furthermore, the rotating assembly includes a stepper motor, a gear, a gear ring and an annular guide rail. The annular guide rail is fixed to the top of the base through four support rods, the gear ring is rotatably arranged on the top of the annular guide rail through a bearing, a support plate is fixed to the top of the base, the stepper motor is inserted on the top of the support plate, the gear is fixed on its output end, and the gear is meshingly connected with the gear ring.

[0018] Furthermore, the position adjustment component includes a dual-axis cylinder, a second push plate, a first electric slide and a second electric slide. The dual-axis cylinder is fixed on the top of the ring gear, the second push plate is fixed on its output end, the first electric slide is fixed on the push plate, the first electric slide is slidably provided with a first slide, the second electric slide is fixed on the first slide, and the dual-axis cylinder is electrically connected to the controller.

[0019] Furthermore, the angle adjustment assembly includes a micromotor, a rotating plate, an electric push rod and a rocker arm. A second slide plate is slidably provided on the outer wall of the second electric slide. The micromotor is fixed on the second slide plate. The rotating plate is fixed on the output end of the micromotor. Two support rods are fixed on the bottom of the rotating plate. The welding gun is rotatably connected to the two support rods through two hinge shafts. The rocker arm is fixed at one end of one of the hinge shafts away from the welding gun. An insertion rod is fixed on the outer wall of the welding gun. The electric push rod is hinged between the insertion rod and the rotating plate. An avoidance groove for the rotation of the insertion rod is opened on the outer wall of the rocker arm. The micromotor and the electric push rod are both electrically connected to the controller.

[0020] Furthermore, four material guide troughs are arranged at equal intervals on the top of the workbench, a placement groove is arranged on the top of the workbench, and four positioning rods are fixedly arranged on the top of the placement groove.

[0021] A method for using an automatic welding system for an angle steel tower base comprises the following steps:

[0022] S1: The splicing and fixing of the bottom plate and four ribs:

[0023] Place the bottom plate of the angle steel tower base horizontally into the placement slot, and insert the four positioning rods into the four mounting holes on the bottom plate to position the bottom plate. Then vertically insert the four rib plates into the four guide slots respectively, and keep each rib plate between every two electric clamps.

[0024] After the four rib plates are vertically inserted into the interior of the four material guide troughs respectively, the four rib plates are respectively grasped by eight electric clamps, and then the forward and reverse motors are started by the controller to rotate the output end thereof counterclockwise, thereby causing one of the rotating shafts fixedly connected to the output end thereof to rotate counterclockwise. Since each rotating shaft is rotationally connected to an L-shaped plate, each synchronous wheel is fixedly connected to a rotating shaft, and the four synchronous wheels are sleeved by synchronous belts, thereby driving the other three rotating shafts to rotate synchronously counterclockwise. Since the rotating wheel is fixedly connected to the top of the rotating shaft, the rotating wheel is driven to rotate counterclockwise. Since the push block is fixedly connected to one of the electric clamps, the rotating wheel and the push block are respectively connected to the two ends of the connecting rod, thereby causing the rib plate located in the material guide trough to slide toward the end close to the center of the placement trough. The material guide trough plays a guiding role, and cooperates with the other three material guide troughs and other three pushing components to make the four rib plates approach each other until they fit together.

[0025] S2: Synchronous operation of splicing and limiting:

[0026] When the first wedge block is in contact with the outer wall of the second wedge block, the first wedge block is fixedly connected to the end of the first push plate, and the first wedge block is slidably connected to the limit plate through the slider, thereby driving the first wedge block to slide at the bottom of the limit plate away from the end of the L-shaped rod through the slider. Since the tightening block is slidably connected to the limit rod through the lifting rod, the second wedge block and the tightening block are respectively fixedly connected to the two ends of the lifting rod, the two wedge blocks are fitted with the first wedge block, and the top of the second wedge block is slidably connected to the bottom of the first wedge block, thereby causing the first wedge block to slide to the end away from the L-shaped rod until its wide side is aligned with the second When the top of the wedge block contacts, it drives the lifting rod and the tightening block at its bottom to descend to plug with the tops of the four ribs. Slots for the four ribs to be plugged in are arranged at equal intervals on the outer wall of the tightening block. The tightening block realizes the tightening limit of the tops of the four ribs, which has a pressing effect, and the four push blocks cooperate with the eight clamping claws to realize the tightening limit of the sides of the four ribs. The cooperation of the two, on the one hand, can provide effective support for the four ribs and the bottom plate, improve the tightness of each other's splicing, facilitate fast welding, and improve welding efficiency. On the other hand, it can effectively control the shape and relative position of the bottom plate and the four ribs through multi-directional tightening limit, balance the internal stress generated by heat during the welding process of the four ribs and the bottom plate, prevent welding deformation, and thus improve the welding effect.

[0027] S3: Welding operation of angle steel tower base:

[0028] When the four ribs are spliced ​​with the four bottoms, the double-axis cylinder is started by the controller so that its output end extends toward the longitudinal seam between two of the ribs. Since its output end is fixedly connected to the push plate, the push plate is connected to the first electric slide, and the second electric slide is slidably arranged on the first electric slide, the welding gun is connected to the second slide on the second slide through the rotating plate and the micromotor, so that the welding gun is close to the longitudinal seam between two of the ribs, and then one of the longitudinal seams is welded by the welding gun;

[0029] When one of the longitudinal seams is welded, the welding gun is driven by the double-axis cylinder to withdraw a certain distance from the longitudinal seam, and then the rotating plate is driven to rotate by the micromotor, thereby driving the welding head to rotate toward the horizontal seam between the bottom plate and one of the ribs, and then the stepper motor is started by the controller to rotate the gear on its output end, and the gear drives the gear ring to rotate, so that the welding gun rotates to align with the horizontal seam, and then the second electric slide is started, so that the welding gun on it is driven by the second slide to descend until the welding gun is close to the horizontal seam for welding. During the welding process, the double-axis cylinder realizes all welding of the horizontal seam by contracting the output end and cooperating with the first electric slide to make lateral fine adjustment to the position of the welding gun, and then the remaining longitudinal seams and horizontal seams are welded in turn according to the above steps;

[0030] When the remaining longitudinal seams and horizontal seams are welded in sequence, the four ribs are first loosened, and then the forward and reverse motors are driven to rotate clockwise through the controller, and the eight clamps are withdrawn through the four connecting rods, that is, the eight clamps are restored to the state of one end close to the rotating wheel. Since one of the clamps and the tightening block are linked to each other through the resistance component, the tightening block is synchronously driven to rise above the four ribs to achieve the loosening of the four ribs, and then the electric push rod is started by the controller to shrink its output end. Since the swing arm is fixedly connected to the end of one of the hinged shafts away from the welding gun, the plug rod is fixedly connected to the welding gun, the plug rod and the rotating plate are respectively hinged to the two ends of the electric push rod, and the welding gun is rotatably connected to the two support rods through two hinged shafts. An avoidance groove for the plug rod to rotate is provided on the outer wall of the swing arm, and then the welding gun is driven to rotate to the end close to the micromotor through the resistance force between the plug rod and the swing rod when the plug rod rotates inside the avoidance groove, that is, upward rotation, and the rotating component is cooperated to weld the parts of the four longitudinal seams that were previously blocked by the tightening block in turn, thereby completing all the welding work of the entire angle steel tower base.

[0031] Beneficial effects of the present invention:

[0032] 1. The present invention designs a splicing mechanism, namely a driving assembly, four pushing assemblies and eight electric clamps, so that the four ribs can be synchronously approached to each other until the adjacent ends of the four ribs are close to each other. There is no need to splice the four ribs one by one as in the existing method, which speeds up the welding steps and improves the welding efficiency. At the same time, it avoids a certain deviation between the four ribs and the bottom plate after welding, thereby improving the force uniformity of the base, which is beneficial to improving the overall rigidity of the angle steel tower.

[0033] 2. The present invention designs a limiting mechanism, namely a tightening block, a resistance assembly and a lifting assembly. The four ribs can be firmly pressed on the top of the bottom plate through the tightening block. At the same time, the placement groove and four guide rods are designed to limit the bottom plate. Compared with the prior art, the present invention can provide effective support for the four ribs and the bottom plate, improve the tightness of the splicing between each other, facilitate and quickly weld, and prevent the bottom plate and the four ribs from lateral and longitudinal displacement during the welding process, thereby improving the welding effect.

[0034] 3. Combining the beneficial effects of 1 and 2, a new beneficial effect will be produced, that is, by vertically pressing the tops of the four ribs through the tightening blocks, and laterally tightening the sides of the four ribs through the eight clamping claws, the shapes and relative positions of the bottom plate and the four ribs can be effectively controlled through multi-directional tightening and limiting, and the internal stress generated by heat during the welding process of the four ribs and the bottom plate can be balanced to prevent welding deformation, thereby improving the welding effect.

[0035] 4. The present invention designs a welding mechanism, namely a welding gun, a rotating assembly, a position adjustment assembly and an angle adjustment assembly, so that the welding gun can be freely adjusted in height and angle to automatically weld all the joints between the rib plate and the bottom plate and between the four rib plates without causing welding omissions.

[0036] 5. The present invention can realize the linkage operation of the splicing mechanism and the limiting mechanism by designing the interference component, that is, when the electric clamp clamps the ribs close to each other, it simultaneously drives the tightening block to descend vertically, so as to realize the splicing, pressing and limiting of the four ribs and the bottom. The linkage operation of the two mechanisms can be realized only by a single driving source, that is, the forward and reverse motor, which reduces the power consumption of the system, is beneficial to saving welding costs, and at the same time reduces the overall structure of the system, which is beneficial to realizing the integrated design effect of the system and reducing the occupied space and manufacturing cost of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings in the embodiment of the present invention are briefly introduced below.

[0038] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ;

[0039] Figure 2 for Figure 1 A in the enlarged view;

[0040] Figure 3 for Figure 1 The enlarged view of point B in the figure;

[0041] Figure 4 The three-dimensional structure of the present invention is shown in FIG. Figure 2 ;

[0042] Figure 5 for Figure 4 The enlarged view of point C in the figure;

[0043] Figure 6 is a schematic diagram of the cross-sectional structure of one of the slide rails of the present invention;

[0044] Figure 7 for Figure 6 The enlarged view of point D in the figure;

[0045] Figure 8 This is a schematic diagram of the three-dimensional structure of the present invention without the angle steel tower base;

[0046] Fig. 9 It is a schematic diagram of the three-dimensional structure of the angle steel tower base before and after welding of the present invention;

[0047] In the figure: a storage table 11, a welding gun 12, an electric clamp 13, a connecting plate 14, a tightening block 15, a forward and reverse motor 16, a synchronous belt 17, a synchronous wheel 18, a rotating shaft 19, a rotating wheel 20, a connecting rod 21, a push block 22, a slide bar 23, a first wedge block 24, a connecting rod 25, a first push plate 26, a slider 27, a second wedge block 28, a lifting rod 29, a reset spring 30, a limit ring 31, a stepping motor 32, a gear 33, a gear ring 34, an annular guide rail 35, a double-axis cylinder 36, a second push plate 37, a first electric slide 38, a second electric slide 39, a first slide 40, a micromotor 41, a rotating plate 42, an electric push rod 43, a rocker arm 44, a second slide 45, an insertion rod 46, a guide trough 47, a placement trough 48, a positioning rod 49, a bottom plate 50, and a rib 51. DETAILED DESCRIPTION

[0048] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0049] Among them, the drawings are only used for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the present invention, some parts of the drawings will be omitted, enlarged or reduced, and do not represent the size of the actual product.

[0050] Reference Figures 1 to 9 As shown, an automatic welding system for an angle steel tower base includes a base and a storage platform 11, wherein the storage platform 11 is arranged on the top of the base;

[0051] It also includes a controller, a welding mechanism, a splicing mechanism and a limiting mechanism;

[0052] The welding mechanism is arranged on the top of the base, and the welding mechanism includes a welding gun 12, a rotating assembly, a position adjustment assembly and an angle adjustment assembly;

[0053] The splicing mechanism is arranged on the base, and the splicing mechanism includes a driving component, four pushing components and eight electric clamps 13. Four L-shaped plates are symmetrically arranged on the top of the base, the driving component is arranged between the four L-shaped plates, and four pushing components are arranged at equal intervals on the top of the workbench. Every two electric clamps 13 are arranged on one pushing component, and every two electric clamps 13 are fixedly connected by a connecting plate 14.

[0054] The limiting mechanism is arranged on the top of the workbench, and the limiting mechanism includes a tightening block 15, a resistance assembly and a lifting assembly. An L-shaped rod is fixedly provided on the top of the workbench, the resistance assembly is arranged between the L-shaped rod and one of the electric clamps 13, a limiting rod is fixedly provided on the outer wall of the L-shaped rod, the lifting assembly is inserted into the limiting rod, the lifting assembly is fitted with the resistance assembly, and the tightening block 15 is fixedly provided at the bottom of the lifting assembly.

[0055] Reference Figures 1 to 9 As shown, the driving assembly includes a forward and reverse motor 16, a synchronous belt 17, four synchronous wheels 18 and four rotating shafts 19, each rotating shaft 19 is rotatably arranged on the top of an L-shaped plate, each synchronous wheel 18 is fixedly arranged on a rotating shaft 19, the synchronous belt 17 is sleeved on the outer wall of the four synchronous wheels 18, the forward and reverse motor 16 is fixedly arranged on the outer wall of one of the L-shaped plates, and its output end is fixedly connected to the bottom end of one of the rotating shafts 19, and the forward and reverse motor 16 is electrically connected to the controller. When the four ribs 51 are respectively vertically inserted into the interior of the four guide grooves 47, the four ribs 51 are respectively grasped by eight electric clamps 13, and then the forward and reverse motor 16 is started by the controller to make its output end rotate counterclockwise, so that one of the rotating shafts 19 fixedly connected to its output end rotates counterclockwise. Since each rotating shaft 19 is rotatably connected to an L-shaped plate, each synchronous wheel 18 is fixedly connected to a rotating shaft 19, and the four synchronous wheels 18 are sleeved by the synchronous belt 17, thereby driving the other three rotating shafts 19 to rotate synchronously counterclockwise.

[0056] Reference Figures 1 to 9As shown, each pushing assembly includes a rotating wheel 20, a connecting rod 21 and a pushing block 22. The rotating wheel 20 is fixedly arranged at the top end of one of the rotating shafts 19, the pushing block 22 is fixedly arranged on the outer wall of one of the electric clamps 13, the connecting rod 21 is hingedly arranged between the rotating wheel 20 and the pushing block 22, and four slide rails are arranged at equal intervals on the top of the workbench. A slide bar 23 is slidably arranged inside each slide rail, and each slide bar 23 is fixedly connected to one of the electric clamps 13 close to the connecting rod 21. When the rotating shaft 19 rotates counterclockwise, the electric clamp 13 is moved. When rotating, since the rotating wheel 20 is fixedly connected to the top of the rotating shaft 19, the rotating wheel 20 is driven to rotate counterclockwise. Since the pushing block 22 is fixedly connected to one of the electric clamps 13, the rotating wheel 20 and the pushing block 22 are respectively connected to the two ends of the connecting rod 21, so that the rib plate 51 located in the guide groove 47 slides toward the end close to the center of the placement groove 48. The guide groove 47 plays a guiding role, and cooperates with the other three guide grooves 47 and the other three pushing components to make the four rib plates 51 approach each other until they fit together.

[0057] Reference Figures 1 to 9 As shown, the interference assembly includes a first wedge block 24, a connecting rod 25 and a first push plate 26. The first push plate 26 is fixedly arranged on the outer wall of one of the electric clamps 13, the connecting rod 25 is fixedly arranged on the top of the first push plate 26, the first wedge block 24 is fixedly arranged at the end of the connecting rod 25 away from the first push plate 26, a limit plate is fixedly arranged on the top of the L-shaped rod, the first wedge block 24 is slidably connected to the limit plate through a slider 27, and when the electric clamp 13 clamps the rib 51 to slide toward the end close to the center of the placement groove 48, since the first push plate 26 is fixedly connected to the outer wall of one of the electric clamps 13, the connecting rod 25 is fixedly connected to the top of the first push plate 26, the first wedge block 24 is fixedly connected to the end of the connecting rod 25 away from the first push plate 26, and the first wedge block 24 is slidably connected to the limit plate through the slider 27, thereby driving the first wedge block 24 to slide through the slider 27 at the bottom of the limit plate to the end away from the L-shaped rod.

[0058] Reference Figures 1 to 9As shown, the lifting assembly includes a second wedge block 28, a lifting rod 29 and a return spring 30. The lifting rod 29 is fixedly arranged on the top of the tightening block 15, the second wedge block 28 is fixedly arranged on the top of the lifting rod 29, the return spring 30 is sleeved on the outer wall of the lifting rod 29, and a limiting ring 31 is fixedly arranged on the outer wall of the lifting rod 29. The limiting rod and the limiting ring 31 respectively contact with the two ends of the return spring 30, the second wedge block 28 is fitted with the first wedge block 24, and the top of the second wedge block 28 is slidably connected with the bottom of the first wedge block 24. When the first wedge block 24 is When the slider 27 slides at the bottom of the limit plate toward the end away from the L-shaped rod, since the tightening block 15 is slidably connected to the limit rod through the lifting rod 29, the second wedge block 28 and the tightening block 15 are respectively fixedly connected to the two ends of the lifting rod 29, and the two wedge blocks fit with the first wedge block 24, and the top of the second wedge block 28 is slidably connected to the bottom of the first wedge block 24, so that the first wedge block 24 slides toward the end away from the L-shaped rod until its wide side contacts the top of the second wedge block 28, driving the lifting rod 29 and the tightening block 15 at its bottom to descend to the four ribs The top of the four ribs 51 is plugged in, and slots for the four ribs 51 to be plugged in are arranged at equal intervals on the outer wall of the tightening block 15. The tightening block 15 realizes the tight limit of the top of the four ribs 51, which has a pressing effect, and the four push blocks 22 cooperate with the eight clamping claws to realize the tight limit of the side of the four ribs 51. The cooperation of the two can, on the one hand, provide effective support for the four ribs 51 and the bottom plate 50, improve the splicing tightness of each other, facilitate fast welding, and improve welding efficiency. On the other hand, it can effectively control the bottom plate 50 and the four ribs 51 through multi-directional tight limit. 1, balances the internal stress generated by heat during the welding process of the four ribs 51 and the bottom plate 50, prevents welding deformation, and thus improves the welding effect (the figure shows the completed state of the linkage structure, not the initial state. The initial state of the linkage structure is that the narrow side of the first wedge block 24 fits the narrow side of the second wedge block 28, and the tightening block 15 is located above the four ribs 51). The reset spring 30 lifts the limit ring 31 each time the first wedge block 24 is reset, thereby driving the lifting rod 29 and the second wedge block 28 on its top to automatically reset.

[0059] Reference Figures 1 to 9As shown, the rotating assembly includes a stepper motor 32, a gear 33, a gear ring 34 and an annular guide rail 35. The annular guide rail 35 is fixed on the top of the base through four support rods. The gear ring 34 is rotatably arranged on the top of the annular guide rail 35 through a bearing. A support plate is fixed on the top of the base. The stepper motor 32 is inserted on the top of the support plate. The gear 33 is fixed on its output end. The gear 33 is meshed and connected with the gear ring 34. When one of the longitudinal seams is welded, the welding gun 12 is driven by the double-axis cylinder 36 to withdraw a certain distance from the longitudinal seam first, and then the rotating plate 42 is driven to rotate by the micromotor 41, thereby driving the welding head to approach the bottom plate 50 and one of them. The horizontal seam of the rib 51 rotates, and then the stepper motor 32 is started through the controller, so that the gear 33 on its output end rotates, and the gear ring 34 is driven to rotate through the gear 33, so that the welding gun 12 rotates to align with the horizontal seam, and then the second electric slide 39 is started, so that the welding gun 12 on it is driven by the second slide 45 to descend until the welding gun 12 is close to the horizontal seam for welding. During the welding process, the double-axis cylinder 36 shrinks the output end and cooperates with the first electric slide 38 to make lateral fine adjustments to the position of the welding gun 12, thereby achieving all welding of the horizontal seam, and then the remaining longitudinal seams and horizontal seams are welded in turn according to the above steps.

[0060] Reference Figures 1 to 9 As shown, the position adjustment component includes a double-axis cylinder 36, a second push plate 37, a first electric slide 38 and a second electric slide 39. The double-axis cylinder 36 is fixed on the top of the gear ring 34, the second push plate 37 is fixed on its output end, the first electric slide 38 is fixed on the push plate, the first electric slide 38 is slidably provided with a first slide 40, and the second electric slide 39 is fixed on the first slide 40. The double-axis cylinder 36 is electrically connected to the controller. When the four ribs 51 are spliced ​​with the four bottoms, through The controller starts the dual-axis cylinder 36 so that its output end extends toward the longitudinal seam between two of the ribs 51. Since its output end is fixedly connected to the push plate, the push plate is connected to the first electric slide 38, the second electric slide 39 is slidably arranged on the first electric slide 38, and the welding gun 12 is connected to the second slide 45 on the second slide through the rotating plate 42 and the micromotor 41, so that the welding gun 12 is brought close to the longitudinal seam between two of the ribs 51, and then one of the longitudinal seams is welded by the welding gun 12.

[0061] Reference Figures 1 to 9As shown, the angle adjustment component includes a micromotor 41, a rotating plate 42, an electric push rod 43 and a swing rod 44. A second slide plate 45 is slidably provided on the outer wall of the second electric slide 39. The micromotor 41 is fixed on the second slide plate 45. The rotating plate 42 is fixed on the output end of the micromotor 41. Two support rods are fixed at the bottom of the rotating plate 42. The welding gun 12 is rotatably connected to the two support rods through two hinge shafts. The swing rod 44 is fixed at one end of one of the hinge shafts away from the welding gun 12. A plug rod 46 is fixed on the outer wall of the welding gun 12. The electric push rod 43 is hinged between the plug rod 46 and the rotating plate 42. An avoidance groove for the rotation of the plug rod 46 is opened on the outer wall of the swing rod 44. The micromotor 41 and the electric push rod 43 are both electrically connected to the controller. When the remaining longitudinal seams and horizontal seams are welded in sequence, the four ribs 51 are first loosened, and then the forward and reverse motors 16 are driven by the controller to rotate clockwise, and the withdrawal of the eight clamps is achieved through the four connecting rods 21, that is, the eight clamps. After the welding head 12 is swung back to the state close to the rotating wheel 20, the synchronous belt 17 drives the tightening block 15 to rise above the four ribs 51 to loosen the four ribs 51, and then the electric push rod 43 is started by the controller to shrink its output end. Since the swing arm 44 is fixedly connected to one end of one of the hinge shafts away from the welding gun 12, the plug rod 46 is fixedly connected to the welding gun 12, the plug rod 46 and the rotating plate 42 are hinged to the two ends of the electric push rod 43 respectively, and the welding gun 12 is rotatably connected to the two support rods through two hinge shafts. An avoidance groove for the rotation of the plug rod 46 is provided on the outer wall of the swing arm 44, and then the welding gun 12 is driven to rotate toward the end close to the micromotor 41, that is, upward rotation, through the resistance force between the plug rod 46 and the swing arm 44 when the plug rod 46 rotates inside the avoidance groove, the welding gun 12 is driven to rotate toward the end close to the micromotor 41, that is, upward rotation, and the rotating assembly is cooperated to weld the parts of the four longitudinal joints that were previously blocked by the tightening block 15 in turn, thereby completing all the welding work of the entire angle steel tower base.

[0062] Reference Figures 1 to 9 As shown, four material guide grooves 47 are arranged at equal intervals on the top of the workbench, and a placement groove 48 is arranged on the top of the workbench. Four positioning rods 49 are fixedly arranged on the top of the placement groove 48. When the automatic welding of the angle steel tower base is performed, the bottom plate 50 of the angle steel tower base is firstly placed horizontally into the placement groove 48, and the four positioning rods 49 are inserted into the four mounting holes on the bottom plate 50 to realize the positioning of the bottom plate 50, and then the four ribs 51 are vertically inserted into the four material guide grooves 47 respectively, and each rib 51 is kept between every two electric clamps 13.

[0063] A method for using an automatic welding system for an angle steel tower base comprises the following steps:

[0064] S1: splicing and fixing of the bottom plate 50 and the four ribs 51:

[0065] Place the bottom plate 50 of the angle steel tower base horizontally into the placement groove 48, and insert the four positioning rods 49 into the four mounting holes on the bottom plate 50 to achieve positioning of the bottom plate 50, and then vertically insert the four ribs 51 into the four guide grooves 47 respectively, and keep each rib 51 between every two electric clamps 13;

[0066] After the four ribs 51 are respectively vertically inserted into the four guide grooves 47, the four ribs 51 are respectively grasped by the eight electric clamps 13, and then the forward and reverse motors 16 are started by the controller to rotate the output end counterclockwise, so that one of the rotating shafts 19 fixedly connected to the output end rotates counterclockwise. Since each rotating shaft 19 is rotatably connected to an L-shaped plate, each synchronous wheel 18 is fixedly connected to a rotating shaft 19, and the four synchronous wheels 18 are sleeved by the synchronous belt 17, thereby driving the other three rotating shafts. 19 rotates counterclockwise synchronously. Since the rotating wheel 20 is fixedly connected to the top of the rotating shaft 19, the rotating wheel 20 is driven to rotate counterclockwise. Since the pushing block 22 is fixedly connected to one of the electric clamps 13, the rotating wheel 20 and the pushing block 22 are respectively connected to the two ends of the connecting rod 21, so that the rib plate 51 located in the guide groove 47 slides toward the end close to the center of the placement groove 48. The guide groove 47 plays a guiding role. In conjunction with the other three guide grooves 47 and the other three pushing components, the four rib plates 51 can be brought close to each other until they fit together.

[0067] S2: Synchronous operation of splicing and limiting:

[0068] While the clamping rib 51 of the electric clamp 13 slides toward the end close to the center of the placement groove 48, since the first push plate 26 is fixedly connected to the outer wall of one of the electric clamps 13, the connecting rod 25 is fixedly connected to the top of the first push plate 26, and the first wedge block 24 is fixedly connected to the end of the connecting rod 25 away from the first push plate 26. The first wedge block 24 is slidably connected to the limit plate through the slider 27, thereby driving the first wedge block 24 to slide at the bottom of the limit plate away from the end of the L-shaped rod through the slider 27. Since the tightening block 15 is slidably connected to the limit rod through the lifting rod 29, the second wedge block 28 and the tightening block 15 are respectively fixedly connected to the two ends of the lifting rod 29, the two wedge blocks are fitted with the first wedge block 24, and the top of the second wedge block 28 is slidably connected to the bottom of the first wedge block 24, thereby causing the first wedge block 24 to slide toward the end away from the L-shaped rod. When its wide side contacts the top of the second wedge block 28, it drives the lifting rod 29 and the tightening block 15 at its bottom to descend to be plugged into the top of the four ribs 51. The outer wall of the tightening block 15 is provided with slots for the four ribs 51 to be plugged in at equal intervals. The tightening block 15 realizes the tightening limit on the top of the four ribs 51, which has a pressing effect, and the four push blocks 22 cooperate with the eight clamping claws to realize the tightening limit on the side of the four ribs 51. The cooperation of the two, on the one hand, can provide effective support for the four ribs 51 and the bottom plate 50, improve the splicing tightness of each other, facilitate fast welding, and improve welding efficiency. On the other hand, it can effectively control the shape and relative position of the bottom plate 50 and the four ribs 51 through multi-directional tightening limit, balance the internal stress generated by heat during the welding process of the four ribs 51 and the bottom plate 50, prevent welding deformation, and thus improve the welding effect.

[0069] S3: Welding operation of angle steel tower base:

[0070] After the four ribs 51 are joined with the four bottoms, the double-axis cylinder 36 is started by the controller, so that its output end extends toward the longitudinal seam between two of the ribs 51. Since its output end is fixedly connected with the push plate, the push plate is connected with the first electric slide 38, and the second electric slide 39 is slidably arranged on the first electric slide 38, the welding gun 12 is connected with the second slide 45 on the second slide through the rotating plate 42 and the micro motor 41, so that the welding gun 12 is close to the longitudinal seam between two of the ribs 51, and then one of the longitudinal seams is welded by the welding gun 12;

[0071] When one of the longitudinal seams is welded, the welding gun 12 is driven by the double-axis cylinder 36 to withdraw a certain distance from the longitudinal seam, and then the rotating plate 42 is driven to rotate by the micromotor 41, thereby driving the welding head to rotate toward the horizontal seam between the bottom plate 50 and one of the ribs 51, and then the stepper motor 32 is started by the controller to rotate the gear 33 on its output end, and the gear ring 34 is driven to rotate by the gear 33, so that the welding gun 12 rotates to align with the horizontal seam, and then the second electric slide 39 is started, so that the welding gun 12 on it is driven by the second slide 45 to descend to the welding gun 12 close to the horizontal seam for welding. During the welding process, the double-axis cylinder 36 realizes all welding of the horizontal seam by contracting the output end and cooperating with the first electric slide 38 to make a lateral fine adjustment on the position of the welding gun 12, and then the remaining longitudinal seams and horizontal seams are welded in sequence according to the above steps;

[0072] When the remaining longitudinal seams and horizontal seams are welded in sequence, the four ribs 51 are first loosened, and then the forward and reverse motors 16 are driven by the controller to rotate clockwise, and the eight clamps are withdrawn through the four connecting rods 21, that is, the eight clamps are restored to the state close to one end of the rotating wheel 20. Since one of the clamps and the tightening block 15 are linked to the contact assembly, the synchronous belt 17 drives the tightening block 15 to rise above the four ribs 51 to loosen the four ribs 51, and then the electric push rod 43 is started by the controller to shrink its output end. Since the swing arm 44 is connected to one of the hinge shafts away from the welding gun, One end of 12 is fixedly connected, the plug rod 46 is fixedly connected to the welding gun 12, the plug rod 46 and the rotating plate 42 are hinged to the two ends of the electric push rod 43 respectively, the welding gun 12 is rotatably connected to the two support rods through two hinge shafts, and an avoidance groove for the rotation of the plug rod 46 is opened on the outer wall of the swing arm 44, and then the welding gun 12 is driven to rotate toward one end close to the micromotor 41, that is, to rotate upward, and cooperate with the rotating assembly to weld the parts of the four longitudinal joints that were previously blocked by the tightening block 15 in turn, thereby completing all the welding work of the entire angle steel tower base.

[0073] The working principle of the present invention is as follows: when performing automatic welding of the angle steel tower base, firstly, the bottom plate 50 of the angle steel tower base is horizontally placed into the placement groove 48, and four positioning rods 49 are inserted into the four mounting holes on the bottom plate 50 to achieve the positioning of the bottom plate 50, and then the four ribs 51 are vertically inserted into the four material guide grooves 47 respectively, and each rib 51 is kept between every two electric clamps 13.

[0074] After the four ribs 51 are vertically inserted into the four material guide grooves 47 respectively, the four ribs 51 are respectively grasped by eight electric clamps 13, and then the forward and reverse motors 16 are started by the controller to rotate the output end thereof counterclockwise, thereby causing one of the rotating shafts 19 fixedly connected to the output end thereof to rotate counterclockwise. Since each rotating shaft 19 is rotatably connected to an L-shaped plate, each synchronous wheel 18 is fixedly connected to a rotating shaft 19, and the four synchronous wheels 18 are connected by the synchronous belt 17, thereby driving the other three rotating shafts 19 to rotate synchronously counterclockwise.

[0075] When the rotating shaft 19 rotates counterclockwise, since the rotating wheel 20 is fixedly connected to the top of the rotating shaft 19, the rotating wheel 20 is driven to rotate counterclockwise. Since the pushing block 22 is fixedly connected to one of the electric clamps 13, the rotating wheel 20 and the pushing block 22 are respectively connected to the two ends of the connecting rod 21, so that the rib plate 51 located in the material guide groove 47 slides toward the end close to the center of the placement groove 48. The material guide groove 47 plays a guiding role, and cooperates with the other three material guide grooves 47 and the other three pushing components to make the four rib plates 51 approach each other until they fit together.

[0076] While the electric clamp 13 clamps the rib 51 and slides toward the end close to the center of the placement groove 48, since the first push plate 26 is fixedly connected to the outer wall of one of the electric clamps 13, the connecting rod 25 is fixedly connected to the top of the first push plate 26, the first wedge block 24 is fixedly connected to the end of the connecting rod 25 away from the first push plate 26, and the first wedge block 24 is slidably connected to the limit plate through the slider 27, thereby driving the first wedge block 24 to slide at the bottom of the limit plate through the slider 27 toward the end away from the L-shaped rod.

[0077] When the first wedge block 24 slides at the bottom of the limit plate toward the end away from the L-shaped rod through the slider 27, since the tightening block 15 is slidably connected to the limit rod through the lifting rod 29, the second wedge block 28 and the tightening block 15 are respectively fixedly connected to the two ends of the lifting rod 29, the two wedge blocks fit with the first wedge block 24, and the top of the second wedge block 28 is slidably connected to the bottom of the first wedge block 24, so that the first wedge block 24 slides toward the end away from the L-shaped rod until its wide side contacts the top of the second wedge block 28, driving the lifting rod 29 and the tightening block 15 at its bottom end to descend and plug with the top of the four ribs 51. The four ribs 51 are inserted into the slots, and the tightening block 15 realizes the tightening and limiting of the tops of the four ribs 51, which has a pressing effect, while the four push blocks 22 cooperate with the eight clamping claws to realize the tightening and limiting of the sides of the four ribs 51. The cooperation of the two can, on the one hand, provide effective support for the four ribs 51 and the bottom plate 50, improve the tightness of the splicing between each other, facilitate fast welding, and improve welding efficiency. On the other hand, the shape and relative position of the bottom plate 50 and the four ribs 51 can be effectively controlled through multi-directional tightening and limiting, and the internal stress generated by heat during the welding process of the four ribs 51 and the bottom plate 50 can be balanced to prevent welding deformation, thereby improving the welding effect.

[0078] After the four ribs 51 are spliced ​​with the four bottoms, the dual-axis cylinder 36 is started by the controller so that its output end extends toward the longitudinal joint between two of the ribs 51. Since its output end is fixedly connected to the push plate, the push plate is connected to the first electric slide 38, the second electric slide 39 is slidably arranged on the first electric slide 38, and the welding gun 12 is connected to the second slide 45 on the second slide through the rotating plate 42 and the micromotor 41, so that the welding gun 12 is close to the longitudinal joint between two of the ribs 51, and then one of the longitudinal joints is welded by the welding gun 12.

[0079] When one of the longitudinal seams is welded, the welding gun 12 is driven by the double-axis cylinder 36 to withdraw a certain distance from the longitudinal seam, and then the rotating plate 42 is driven to rotate by the micromotor 41, thereby driving the welding head to rotate toward the horizontal seam between the bottom plate 50 and one of the ribs 51, and then the stepper motor 32 is started by the controller to rotate the gear 33 on its output end, and the gear ring 34 is driven to rotate by the gear 33, so that the welding gun 12 rotates to align with the horizontal seam, and then the second electric slide 39 is started, so that the welding gun 12 on it is driven by the second slide 45 to descend until the welding gun 12 is close to the horizontal seam for welding. During the welding process, the double-axis cylinder 36 realizes all welding of the horizontal seam by contracting the output end and cooperating with the first electric slide 38 to make lateral fine adjustment to the position of the welding gun 12, and then the remaining longitudinal seams and horizontal seams are welded in turn according to the above steps.

[0080] When the remaining longitudinal seams and horizontal seams are welded in sequence, the four ribs 51 are first loosened, and then the forward and reverse motors 16 are driven by the controller to rotate clockwise, and the eight clamps are withdrawn through the four connecting rods 21, that is, the eight clamps are restored to the state close to one end of the rotating wheel 20. Since one of the clamps and the tightening block 15 are linked to the contact assembly, the synchronous belt 17 drives the tightening block 15 to rise above the four ribs 51 to loosen the four ribs 51, and then the electric push rod 43 is started by the controller to shrink its output end. Since the swing arm 44 is connected to one of the hinge shafts away from the welding gun, One end of 12 is fixedly connected, the plug rod 46 is fixedly connected to the welding gun 12, the plug rod 46 and the rotating plate 42 are hinged to the two ends of the electric push rod 43 respectively, the welding gun 12 is rotatably connected to the two support rods through two hinge shafts, and an avoidance groove for the rotation of the plug rod 46 is opened on the outer wall of the swing arm 44, and then the welding gun 12 is driven to rotate toward one end close to the micromotor 41, that is, to rotate upward, and cooperate with the rotating assembly to weld the parts of the four longitudinal joints that were previously blocked by the tightening block 15 in turn, thereby completing all the welding work of the entire angle steel tower base.

Claims

1. An automatic welding system for an angle steel tower base, comprising a base and a storage platform (11), wherein the storage platform (11) is arranged on the top of the base, and is characterized in that: It also includes a controller, a welding mechanism, a splicing mechanism and a limiting mechanism; The welding mechanism is arranged on the top of the base, and comprises a welding gun (12), a rotating assembly, a position adjustment assembly and an angle adjustment assembly; The splicing mechanism is arranged on the base, and comprises a driving assembly, four pushing assemblies and eight electric clamping jaws (13); four L-shaped plates are symmetrically arranged on the top of the base, the driving assembly is arranged between the four L-shaped plates, four pushing assemblies are arranged at equal intervals on the top of the workbench, every two electric clamping jaws (13) are arranged on one pushing assembly, and every two electric clamping jaws (13) are fixedly connected by a connecting plate (14); The limiting mechanism is arranged on the top of the workbench, and the limiting mechanism comprises a tightening block (15), a resistance assembly and a lifting assembly. An L-shaped rod is fixedly arranged on the top of the workbench, the resistance assembly is arranged between the L-shaped rod and one of the electric clamps (13), a limiting rod is fixedly arranged on the outer wall of the L-shaped rod, the lifting assembly is inserted into the limiting rod, the lifting assembly is fitted with the resistance assembly, and the tightening block (15) is fixedly arranged on the bottom of the lifting assembly; The driving assembly comprises a forward and reverse motor (16), a synchronous belt (17), four synchronous wheels (18) and four rotating shafts (19), each rotating shaft (19) is rotatably arranged on the top of an L-shaped plate, each synchronous wheel (18) is fixedly arranged on a rotating shaft (19), the synchronous belt (17) is sleeved on the outer wall of the four synchronous wheels (18), the forward and reverse motor (16) is fixedly arranged on the outer wall of one of the L-shaped plates, the output end of the forward and reverse motor (16) is fixedly connected to the bottom end of one of the rotating shafts (19), and the forward and reverse motor (16) is electrically connected to a controller; Each pushing assembly comprises a rotating wheel (20), a connecting rod (21) and a pushing block (22); the rotating wheel (20) is fixedly arranged at the top end of one of the rotating shafts (19); the pushing block (22) is fixedly arranged on the outer wall of one of the electric clamps (13); the connecting rod (21) is hingedly arranged between the rotating wheel (20) and the pushing block (22); four slide rails are arranged at equal intervals on the top of the workbench; a slide bar (23) is slidably arranged inside each slide rail; and each slide bar (23) is fixedly connected to one of the electric clamps (13) close to the connecting rod (21); The abutment assembly comprises a first wedge block (24), a connecting rod (25) and a first push plate (26), wherein the first push plate (26) is fixedly arranged on the outer wall of one of the electric clamping jaws (13), the connecting rod (25) is fixedly arranged on the top of the first push plate (26), the first wedge block (24) is fixedly arranged on an end of the connecting rod (25) away from the first push plate (26), a limit plate is fixedly arranged on the top of the L-shaped rod, and the first wedge block (24) is slidably connected to the limit plate via a slider (27); The lifting assembly comprises a second wedge block (28), a lifting rod (29) and a return spring (30), wherein the lifting rod (29) is fixedly arranged at the top of the tightening block (15), the second wedge block (28) is fixedly arranged at the top of the lifting rod (29), the return spring (30) is sleeved on the outer wall of the lifting rod (29), a limiting ring (31) is fixedly arranged on the outer wall of the lifting rod (29), the limiting rod and the limiting ring (31) respectively contact with two ends of the return spring (30), the second wedge block (28) is fitted with the first wedge block (24), and the top of the second wedge block (28) is slidably connected with the bottom of the first wedge block (24); The rotating assembly comprises a stepping motor (32), a gear (33), a gear ring (34) and an annular guide rail (35); the annular guide rail (35) is fixedly arranged on the top of the base via four support rods; the gear ring (34) is rotatably arranged on the top of the annular guide rail (35) via a bearing; a support plate is fixedly arranged on the top of the base; the stepping motor (32) is inserted on the top of the support plate; the gear (33) is fixedly arranged on the output end thereof; and the gear (33) is meshingly connected with the gear ring (34).

2. The automatic welding system for angle steel tower base according to claim 1 is characterized in that: The position adjustment component includes a double-axis cylinder (36), a second push plate (37), a first electric slide (38) and a second electric slide (39), wherein the double-axis cylinder (36) is fixedly arranged on the top of the gear ring (34), the second push plate (37) is fixedly arranged on its output end, the first electric slide (38) is fixedly arranged on the push plate, a first slide plate (40) is slidably arranged on the first electric slide (38), the second electric slide (39) is fixedly arranged on the first slide plate (40), and the double-axis cylinder (36) is electrically connected to the controller.

3. The automatic welding system for angle steel tower base according to claim 2 is characterized in that: The angle adjustment component comprises a micromotor (41), a rotating plate (42), an electric push rod (43) and a swing rod (44); a second slide plate (45) is slidably provided on the outer wall of the second electric slide table (39); the micromotor (41) is fixedly provided on the second slide plate (45); the rotating plate (42) is fixedly provided on the output end of the micromotor (41); two support rods are fixedly provided on the bottom of the rotating plate (42); the welding gun (12) is rotatably connected to the two support rods via two hinge shafts; the swing rod (44) is fixedly provided at one end of one of the hinge shafts away from the welding gun (12); an insertion rod (46) is fixedly provided on the outer wall of the welding gun (12); the electric push rod (43) is hingedly provided between the insertion rod (46) and the rotating plate (42); an avoidance groove for the insertion rod (46) to rotate is provided on the outer wall of the swing rod (44); and the micromotor (41) and the electric push rod (43) are both electrically connected to the controller.

4. The automatic welding system for angle steel tower base according to claim 3 is characterized in that: Four material guide grooves (47) are arranged at equal intervals on the top of the workbench, a placement groove (48) is arranged on the top of the workbench, and four positioning rods (49) are fixedly arranged on the top of the placement groove (48).

5. A method for using the angle steel tower base automatic welding system according to claim 4, comprising the following steps: S1: The splicing and fixing of the bottom plate and four ribs: Place the bottom plate of the angle steel tower base horizontally into the placement groove (48), and insert four positioning rods (49) into four mounting holes on the bottom plate to achieve positioning of the bottom plate, and then vertically insert four rib plates into the four guide grooves (47) respectively, and keep each rib plate between each two electric clamps (13); After the four ribs are vertically inserted into the four guide grooves (47), the four ribs are respectively grasped by eight electric clamps (13), and then the forward and reverse motors (16) are started by the controller to rotate the output end thereof counterclockwise, thereby causing one of the rotating shafts (19) fixedly connected to the output end thereof to rotate counterclockwise. Since each rotating shaft (19) is rotationally connected to an L-shaped plate, each synchronous wheel (18) is fixedly connected to a rotating shaft (19), and the four synchronous wheels (18) are sleeved by a synchronous belt (17), thereby driving the other three rotating shafts (19). The rotating wheel (20) rotates counterclockwise synchronously. Since the rotating wheel (20) is fixedly connected to the top of the rotating shaft (19), the rotating wheel (20) is driven to rotate counterclockwise. Since the pushing block (22) is fixedly connected to one of the electric clamps (13), the rotating wheel (20) and the pushing block (22) are respectively connected to the two ends of the connecting rod (21), so that the rib plate located in the guide groove (47) slides toward the end close to the center of the placement groove (48). The guide groove (47) plays a guiding role. In cooperation with the other three guide grooves (47) and the other three pushing components, the four rib plates can be brought close to each other until they fit together. S2: Synchronous operation of splicing and limiting: While the electric clamp (13) clamps the rib plate and slides toward one end close to the center of the placement groove (48), since the first push plate (26) is fixedly connected to the outer wall of one of the electric clamps (13), the connecting rod (25) is fixedly connected to the top of the first push plate (26), the first wedge block (24) is fixedly connected to the end of the connecting rod (25) away from the first push plate (26), and the first wedge block (24) is slidably connected to the limit plate through the slider (27), thereby driving the first wedge block (24) to slide at the bottom of the limit plate toward the end away from the L-shaped rod through the slider (27). Since the tightening block (15) is slidably connected to the limit rod through the lifting rod (29), the second wedge block (28) and the tightening block (15) are respectively fixedly connected to the two ends of the lifting rod (29), the second wedge block is fitted with the first wedge block (24), and the top of the second wedge block (28) is slidably connected to the bottom of the first wedge block (24), so that the first wedge block (24) slides toward the end away from the L-shaped rod until its wide side contacts the top of the second wedge block (28), driving the lifting rod (29) and the tightening block (15) at the bottom end thereof to descend to be plugged with the top of the four ribs, and slots for plugging the four ribs are arranged at equal intervals on the outer wall of the tightening block (15), the tightening block (15) realizes the tightening limit of the top of the four ribs, and the four push blocks (22) cooperate with the eight clamping claws to realize the tightening limit of the side of the four ribs; S3: Welding operation of angle steel tower base: After the four ribs are joined to the four bottoms, the double-axis cylinder (36) is started by the controller so that its output end extends toward the longitudinal joint between two of the ribs. Since its output end is fixedly connected to the push plate, the push plate is connected to the first electric slide (38), the second electric slide (39) is slidably arranged on the first electric slide (38), and the welding gun (12) is connected to the second slide (45) on the second slide via the rotating plate (42) and the micro motor (41), so that the welding gun (12) is brought close to the longitudinal joint between two of the ribs, and then one of the longitudinal joints is welded by the welding gun (12); After the welding of one of the longitudinal seams is completed, the welding gun (12) is driven by the double-axis cylinder (36) to withdraw a certain distance from the longitudinal seam, and then the rotating plate (42) is driven to rotate by the micromotor (41), thereby driving the welding head to rotate toward the horizontal seam between the bottom plate and one of the ribs, and then the stepping motor (32) is started by the controller to rotate the gear (33) on its output end, and the gear (33) drives the gear ring (34) to rotate, so that the welding gun (12) rotates to align with the horizontal seam, and then the second electric slide (39) is started, so that the welding gun (12) on it is driven by the second slide (45) to descend until the welding gun (12) is close to the horizontal seam, and welding is performed. During the welding process, the double-axis cylinder (36) realizes the entire welding of the horizontal seam by contracting the output end and cooperating with the first electric slide (38) to make a lateral fine adjustment on the position of the welding gun (12), and then the remaining longitudinal seams and horizontal seams are welded in sequence according to the above steps; After the remaining longitudinal seams and horizontal seams are welded in sequence, the four ribs are first loosened, and then the forward and reverse motors (16) are driven to rotate clockwise through the controller, and the eight clamps are withdrawn through the four connecting rods (21), that is, the eight clamps are restored to the state of one end close to the rotating wheel (20). Since one of the clamps and the tightening block (15) are linked to the contact assembly, the synchronous belt (17) drives the tightening block (15) to rise above the four ribs, thereby loosening the four ribs. Then, the electric push rod (43) is started by the controller to shrink its output end. Since the swing rod (44) is fixedly connected to one end of the hinged shaft away from the welding gun (12), the swing rod (44) is in a state of being ... The plug rod (46) is fixedly connected to the welding gun (12), the plug rod (46) and the rotating plate (42) are respectively hinged to the two ends of the electric push rod (43), the welding gun (12) is rotatably connected to the two support rods through two hinge shafts, and an avoidance groove for the plug rod (46) to rotate is provided on the outer wall of the swing rod (44), and then the welding gun (12) is driven to rotate toward the end close to the micro motor (41), i.e., rotate upward, by cooperating with the rotating assembly to weld the parts of the four longitudinal joints that were previously blocked by the tightening block (15) in sequence, thereby completing all the welding work of the entire angle steel tower base.

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