A high-efficiency mobile special welding device for tower feet of angle steel towers

Abstract

The present application relates to the technical field of angle steel tower foot welding, and discloses a high-efficiency mobile special welding device for angle steel tower foot, which comprises a welding table provided with a lifting mechanism, a tower foot to be welded is placed on the welding table, a fixing block is installed on the lifting mechanism, a convex groove is formed in the bottom of the fixing block, a pressing disc is fixedly connected to the fixing block, a plurality of arc-shaped grooves are equidistantly formed in the pressing disc, a closing and opening mechanism is arranged in each arc-shaped groove, and a driving mechanism is arranged in the convex groove. Through synchronous cooperation of the driving mechanism and the closing and opening mechanism, synchronous clamping of a plurality of groups of follow-up clamping plates on the angle steel edge of the tower foot to be welded is realized, the follow-up clamping plates always keep parallel with the angle steel edge during clamping under the action of the parallel constraint mechanism, face contact or quasi-face contact clamping is formed, the clamping force is uniformly distributed, the angle steel is prevented from deforming, the angle steel of different thicknesses can be self-adapted, and the clamping stability and universality are improved.

Description

Technical Field

[0001] This invention relates to the field of welding technology for angle steel tower feet, and in particular to a high-efficiency mobile welding device specifically designed for angle steel tower feet. Background Technology

[0002] Angle steel towers are widely used in engineering fields such as power transmission lines and communication base stations. Their tower legs are usually formed by welding multiple angle steels, and the welding quality of the tower legs directly affects the stability and safety of the overall structure of the angle steel tower. Therefore, during the processing of the tower legs, it is necessary to reliably position and stably clamp the tower legs, and ensure the relative positional accuracy of each angle steel edge during the welding process.

[0003] Chinese patent CN222429788U discloses a welding processing platform for angle steel tower legs, including a U-shaped frame. A rotating shaft is rotatably embedded on the upper part of adjacent vertical sections of the U-shaped frame. A fixed seat is fixed between the rotating shafts. An L-shaped clamp is slidably mounted on the front side of each fixed seat. A nut is fixedly embedded through each L-shaped clamp. An adjusting screw is threaded inside each nut. One end of each adjusting screw is rotatably connected to a clamping plate. A cavity is formed inside the U-shaped frame. A double-headed motor is fixedly mounted on the lower inner wall of the cavity. A rotating shaft is fixedly connected to the output end of each double-headed motor. A pulley is fixedly fitted on both rotating shafts. However, while the above processing platform has a relatively simple structure for fixing tower legs to be welded, when the specifications or thickness of the angle steel to be welded change, uneven clamping force, positioning deviation, or localized extrusion deformation can easily occur, thus affecting welding accuracy and weld quality.

[0004] In view of this, the present invention proposes a high-efficiency mobile welding device for the tower feet of angle steel towers to solve the problems existing in the prior art. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a highly efficient mobile welding device for the base of angle steel towers.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A high-efficiency mobile welding device for angle steel tower feet includes a welding table equipped with a lifting mechanism. A tower foot to be welded is placed on the welding table. A fixing block is installed on the lifting mechanism, and a pressing plate is fixedly connected to the bottom of the fixing block with a convex groove. Multiple arc-shaped grooves are evenly spaced inside the pressing plate, and each arc-shaped groove contains a closing / disclosing mechanism. A driving mechanism is installed inside the convex groove to drive the closing / disclosing mechanism. Each closing / disclosing mechanism has two swing drive plates, and a follower clamping plate is hinged to one end of each swing drive plate. A parallel constraint mechanism is installed above each follower clamping plate to constrain the motion posture of the follower clamping plate during the swinging of the swing drive plate.

[0008] Furthermore, the lifting mechanism includes a mounting frame and a hydraulic rod, the mounting frame being fixedly connected to the outer wall of the top of the welding table, and the hydraulic rod being mounted on the mounting frame.

[0009] Furthermore, the engagement / disengagement mechanism includes a driven gear, two drive shafts, and two engagement / disengagement gears. The two drive shafts are rotatably connected inside the arc-shaped groove, and the two engagement / disengagement gears are respectively fixedly connected to the outer wall of the corresponding drive shaft and mesh with each other. The driven gear is fixedly connected to the top outer wall of one of the drive shafts.

[0010] Furthermore, the driving mechanism includes a first driving gear and a clamping driving motor. The clamping driving motor is mounted on the inner wall of the top of the convex groove, and the first driving gear is mounted on the shaft end of the output shaft of the clamping driving motor.

[0011] Furthermore, the parallel constraint mechanism includes a connecting column, a constraint adjustment plate, and a constraint fixing plate. One end of the constraint fixing plate is fixedly connected to the top outer wall of the pressing plate, one end of the constraint adjustment plate is rotatably connected to the constraint fixing plate, the connecting column is rotatably connected to the other end of the constraint adjustment plate, and the bottom end of the connecting column is rotatably connected to the top outer wall of the follower clamping plate.

[0012] Furthermore, the swing drive plate, the follower clamping plate, the constraint adjustment plate, and the constraint fixing plate constitute a parallelogram mechanism, so that the follower clamping plate always remains parallel to the constraint fixing plate during the rotation of the swing drive plate.

[0013] Furthermore, the lifting mechanism is equipped with a cleaning drive motor and a rotating ring, and a second drive gear is installed on the output shaft end of the cleaning drive motor. An internal gear that meshes with the second drive gear is fixedly connected to the inner wall of the rotating ring.

[0014] Furthermore, a vertical electric telescopic rod is installed on the outer wall of the rotating ring, and a horizontal electric telescopic rod is fixedly connected to the telescopic end of the vertical electric telescopic rod, and a right-angled triangle plate is fixedly connected to the telescopic end of the horizontal electric telescopic rod.

[0015] Furthermore, each of the three corners of the right-angled triangle is rotatably connected to a drive roller, and the right-angled part of the right-angled triangle faces the tower foot to be welded. The outer walls of the three drive rollers are fitted with a cleaning belt, and the outer walls of the cleaning belt are provided with multiple cleaning bristles. A servo motor is provided at the top of one of the drive rollers.

[0016] The beneficial effects of this invention are as follows:

[0017] Through the synchronous cooperation of the drive mechanism and the engagement / disengagement mechanism, multiple sets of follower clamping plates are used to simultaneously clamp the angle steel edges of the tower foot to be welded. Under the action of the parallel constraint mechanism, the follower clamping plates remain parallel to the angle steel edges during the clamping process, forming surface contact or near-surface contact clamping. The clamping force is evenly distributed, avoiding deformation of the angle steel. It can adapt to angle steels of different thicknesses, improving clamping stability and versatility. At the same time, combined with a rotatable and retractable cleaning mechanism, it enables rapid and comprehensive cleaning of the weld after welding, reducing manual intervention and significantly improving welding efficiency and overall automation level. Attached Figure Description

[0018] Figure 1 A schematic diagram of a high-efficiency mobile welding device for the legs of angle steel towers;

[0019] Figure 2 A schematic diagram of the fixing block structure of a high-efficiency mobile angle steel tower foot welding device;

[0020] Figure 3 A schematic diagram of the swing drive plate structure of a high-efficiency mobile angle steel tower foot welding device;

[0021] Figure 4 A top view of the pressing plate structure of a high-efficiency mobile angle steel tower foot welding device;

[0022] Figure 5 A schematic diagram of the rotating ring structure of a high-efficiency mobile angle steel tower foot welding device;

[0023] Figure 6 This is a schematic diagram of a right-angled triangular plate structure for a high-efficiency mobile welding device for the base of an angle steel tower.

[0024] In the diagram: 1. Welding table; 2. Tower foot to be welded; 3. Mounting frame; 4. Cleaning drive motor; 5. Rotating ring; 6. Hydraulic rod; 7. Fixing block; 8. Arc groove; 9. Pressing plate; 10. Swing drive plate; 11. Drive gear one; 12. Clamping drive motor; 13. Convex groove; 14. Follow-up clamping plate; 15. Connecting column; 16. Constraint adjustment plate; 17. Constraint fixing plate; 18. Driven gear; 19. Drive shaft; 20. Engagement / disengagement gear; 21. Internal gear; 22. Drive gear two; 23. Right-angle triangle plate; 24. Horizontal electric telescopic rod; 25. Vertical electric telescopic rod; 26. Cleaning belt; 27. Cleaning bristles; 28. Drive roller; 29. ​​Servo motor. Detailed Implementation

[0025] The technical solution of the present invention will be further described in detail below with reference to specific embodiments.

[0026] Reference Figure 1 , Figure 2 as well as Figure 3 As shown, a high-efficiency mobile angle steel tower foot welding device includes a welding table 1 equipped with a lifting mechanism, on which tower feet 2 to be welded are placed. The welding table 1 can be moved as a whole to facilitate welding operations on tower feet at different locations on the construction site, thereby improving the flexibility of the device.

[0027] A fixing block 7 is installed on the lifting mechanism, and a convex groove 13 is opened at the bottom of the fixing block 7 and a pressing plate 9 is fixedly connected thereto. Through the cooperation of the fixing block 7 and the lifting mechanism, the pressing plate 9 can be stably raised and lowered in the vertical direction, thereby applying a downward pressing force to the tower foot 2 to be welded. In addition, the pressing plate 9 not only plays a pressing role during the pressing process, but also can perform preliminary positioning of the tower foot 2 to be welded, preventing it from shaking or shifting during subsequent clamping and welding.

[0028] The pressing plate 9 has multiple arc-shaped grooves 8 evenly spaced inside, and each arc-shaped groove 8 is equipped with a clutch mechanism. The convex groove 13 is equipped with a driving mechanism to drive the clutch mechanism. Each clutch mechanism is equipped with two swing drive plates 10, and each swing drive plate 10 is hinged to a follower clamping plate 14 at one end. Each follower clamping plate 14 is equipped with a parallel constraint mechanism above it to constrain the motion posture of the follower clamping plate 14 during the swing of the swing drive plate 10.

[0029] Place the tower leg 2 to be welded on the welding table 1 and adjust its position so that each angle steel edge of the tower leg 2 to be welded is directly below the corresponding pair of follower clamping plates 14. Then, the lifting mechanism is activated to move the pressing plate 9 downward until the pressing plate 9 is tightly attached to the top outer wall of the tower leg 2 to be welded, thereby reliably limiting the tower leg 2 to be welded. At this time, each angle steel edge of the tower leg 2 to be welded is inserted into the gap between the corresponding pair of follower clamping plates 14. Then, the drive mechanism drives the opening and closing mechanism in each arc groove 8 to run, so that the swing drive plate 10 in each arc groove 8 swings symmetrically. As the swing drive plate 10 swings, the follower clamping plates 14 on both sides gradually move inward under its drive, so that the gap between the two follower clamping plates 14 gradually decreases until it is attached to the outer wall of the angle steel edge of the tower leg 2 to be welded, thereby achieving clamping and fixing of each angle steel edge of the tower leg 2 to be welded.

[0030] During the movement of the swing drive plate 10 carrying the follower clamping plate 14, the parallel constraint mechanism restricts the rotation posture of the follower clamping plate 14, ensuring that the follower clamping plate 14 remains parallel to the angle steel edge being clamped as it approaches the angle steel edge of the tower foot 2 to be welded. This ensures that the two follower clamping plates 14 form surface contact or near-surface contact with the angle steel edge being clamped during clamping, avoiding single-point or tilted compression, making the clamping force evenly distributed, reducing local stress concentration, and preventing deformation or damage to the angle steel edge. At the same time, because the follower clamping plate 14 can automatically adjust its clamping position according to the angle steel thickness under the action of the parallel constraint mechanism, this clamping structure can adapt to angle steel tower feet of different specifications and thicknesses, has strong versatility, and does not require frequent changes of clamps or complex adjustments, significantly improving the efficiency and stability of on-site welding operations.

[0031] Reference Figure 1 As shown, as a further embodiment of the present invention, the lifting mechanism includes a mounting frame 3 and a hydraulic rod 6. The mounting frame 3 is fixedly connected to the top outer wall of the welding table 1, the hydraulic rod 6 is mounted on the mounting frame 3, and the fixing block 7 is fixedly connected to the telescopic end of the hydraulic rod 6. Through the telescopic movement of the hydraulic rod 6, the pressing plate 9 can be smoothly lifted and lowered, thereby ensuring that the clamping force applied to the tower foot 2 to be welded is stable and reliable.

[0032] Reference Figure 3 As shown, as a further embodiment of the present invention, the engagement / disengagement mechanism includes a driven gear 18, two drive shafts 19, and two engagement / disengagement gears 20. The two drive shafts 19 are rotatably connected inside the arc-shaped groove 8. The two engagement / disengagement gears 20 are respectively fixedly connected to the outer wall of the corresponding drive shaft 19 and mesh with each other. The driven gear 18 is fixedly connected to the top outer wall of one of the drive shafts 19. Through the meshing and engagement between the engagement / disengagement gears 20, the two drive shafts 19 can rotate synchronously in opposite directions, thereby driving the two swing drive plates 10 to swing symmetrically.

[0033] Reference Figure 2 As shown, as a further embodiment of the present invention, the driving mechanism includes a driving gear 11 and a clamping driving motor 12. The clamping driving motor 12 is mounted on the inner wall of the top of the convex groove 13, and the driving gear 11 is mounted on the shaft end of the output shaft of the clamping driving motor 12. The driving gear 11 meshes with multiple driven gears 18 to achieve synchronous driving of each engagement and disengagement mechanism.

[0034] Reference Figure 3 As shown, as a further embodiment of the present invention, the parallel constraint mechanism includes a connecting column 15, a constraint adjustment plate 16, and a constraint fixing plate 17. One end of the constraint fixing plate 17 is fixedly connected to the top outer wall of the pressing plate 9, one end of the constraint adjustment plate 16 is rotatably connected to the constraint fixing plate 17, the connecting column 15 is rotatably connected to the other end of the constraint adjustment plate 16, and the bottom end of the connecting column 15 is rotatably connected to the top outer wall of the follower clamping plate 14.

[0035] Reference Figure 4 As shown, as a further embodiment of the present invention, the swing drive plate 10, the follower clamping plate 14, the constraint adjustment plate 16 and the constraint fixing plate 17 constitute a parallelogram mechanism, so that during the rotation of the swing drive plate 10, the follower clamping plate 14 always remains parallel to the constraint fixing plate 17.

[0036] Working principle: The tower leg 2 to be welded is placed on the welding table 1 and its position is adjusted so that each angle steel edge of the tower leg 2 is directly below the corresponding pair of follower clamping plates 14. Then, the hydraulic rod 6 in the lifting mechanism is activated, causing the pressing plate 9 to move downward until the pressing plate 9 is tightly attached to the top outer wall of the tower leg 2 to be welded, thereby reliably limiting the tower leg 2 to be welded. At this time, each angle steel edge of the tower leg 2 to be welded is inserted into the gap between the corresponding pair of follower clamping plates 14. Then, the clamping drive motor 12 is activated, and the output shaft of the clamping drive motor 12 drives the drive gear 11 to rotate. Since the drive gear 11 and one of the drive shafts 1 The driven gear 18 on the top outer wall of 9 meshes, so when the drive gear 11 rotates, it can simultaneously drive multiple driven gears 18 to rotate synchronously. When the driven gear 18 rotates, it drives the corresponding drive shaft 19 to rotate around its axis. Through the meshing and engagement between the engagement and disengagement gears 20, the two drive shafts 19 can rotate synchronously in opposite directions, thereby driving the two swing drive plates 10 to swing symmetrically. As the swing drive plates 10 swing, the follower clamping plates 14 on both sides gradually move inward under its drive, so that the gap between the two follower clamping plates 14 gradually decreases until they are in contact with the outer wall of the angle steel edge of the tower foot 2 to be welded, thereby achieving the clamping and fixing of each angle steel edge of the tower foot 2 to be welded.

[0037] During the movement of the swing drive plate 10 carrying the follower clamping plate 14, the parallel constraint mechanism restricts the rotation posture of the follower clamping plate 14, ensuring that the follower clamping plate 14 remains parallel to the angle steel edge being clamped as it approaches the angle steel edge of the tower foot 2 to be welded. This ensures that the two follower clamping plates 14 form surface contact or near-surface contact with the angle steel edge being clamped during clamping, avoiding single-point or tilted compression, making the clamping force evenly distributed, reducing local stress concentration, and preventing deformation or damage to the angle steel edge. At the same time, because the follower clamping plate 14 can automatically adjust its clamping position according to the angle steel thickness under the action of the parallel constraint mechanism, this clamping structure can adapt to angle steel tower feet of different specifications and thicknesses, has strong versatility, and does not require frequent changes of clamps or complex adjustments, significantly improving the efficiency and stability of on-site welding operations.

[0038] Reference Figure 1 as well as Figure 5 As shown, as a further embodiment of the present invention, the lifting mechanism is provided with a cleaning drive motor 4 and a rotating ring 5. A second drive gear 22 is installed on the output shaft end of the cleaning drive motor 4. An internal gear 21 that meshes with the second drive gear 22 is fixedly connected to the inner wall of the rotating ring 5. The cleaning drive motor 4 is installed on the top outer wall of the mounting frame 3, and the rotating ring 5 is rotatably connected to the bottom outer wall of the mounting frame 3. When the tower legs are welded and the cleaning operation begins, the second drive gear 22 rotates when the cleaning drive motor 4 is started. Because the second drive gear 22 meshes with the internal gear 21 on the inner wall of the rotating ring 5, the rotating ring 5 can rotate.

[0039] Reference Figure 5 As shown, as a further embodiment of the present invention, a vertical electric telescopic rod 25 is installed on the outer wall of the rotating ring 5, and a horizontal electric telescopic rod 24 is fixedly connected to the telescopic end of the vertical electric telescopic rod 25. A right-angled triangle plate 23 is fixedly connected to the telescopic end of the horizontal electric telescopic rod 24. The rotating ring 5 moves the right-angled triangle plate 23 to above the position where the tower foot needs to be cleaned, and the height position of the vertical electric telescopic rod 25 and the right-angled triangle plate 23 is adjusted.

[0040] Reference Figure 6As shown, as a further embodiment of the present invention, each of the three corners of the right-angled triangle 23 is rotatably connected to a drive roller 28, with the right-angled portion of the right-angled triangle 23 facing the tower foot 2 to be welded. A cleaning belt 26 is fitted onto the outer wall of the three drive rollers 28, and multiple cleaning bristles 27 are provided on the outer wall of the cleaning belt 26. A servo motor 29 is mounted at the top of one of the drive rollers 28. During cleaning operations, the right-angled portion of the right-angled triangle 23 is inserted into the angle steel of the tower foot via a horizontal electric telescopic rod 24. Then, through the coordinated adjustment of the vertical electric telescopic rod 25 and the horizontal electric telescopic rod 24, the cleaning bristles 27 on the cleaning belt 26 are brought into contact with the weld surface. Subsequently, the servo motor 29 drives the corresponding drive roller 28 to rotate, thereby moving the cleaning belt 26 and the cleaning bristles 27 on its outer wall to clean the weld. After cleaning the weld at that location, the above operation is repeated to clean other welds.

[0041] Working principle: After the tower foot welding is completed, the cleaning drive motor 4 is started. The cleaning drive motor 4 drives the rotating ring 5 at the bottom of the mounting frame 3 to rotate through the meshing relationship between the drive gear 22 and the internal gear 21, so that the cleaning component installed on the outer wall of the rotating ring 5 moves along the circumference of the tower foot to the top of the weld to be cleaned.

[0042] Subsequently, the height of the cleaning component is adjusted by the vertical electric telescopic rod 25, and in conjunction with the telescopic action of the horizontal electric telescopic rod 24, the right angle of the right angle plate 23 is inserted into the angle steel of the tower foot, and the cleaning strip 26 on the right angle plate 23 is brought close to the weld.

[0043] When the cleaning bristles 27 on the cleaning belt 26 come into contact with the weld surface, the servo motor 29 is started. The servo motor 29 drives the corresponding drive roller 28 to rotate, thereby driving the cleaning belt 26 and the multiple cleaning bristles 27 on its outer wall to circulate and clean the weld slag, spatter and impurities on the weld surface.

[0044] After completing the cleaning operation of one weld seam, the servo motor 29 is stopped, and then the right-angled triangle plate 23 is removed from the tower foot by the horizontal electric telescopic rod 24. Then the cleaning drive motor 4 is restarted to make the rotating ring 5 rotate to the next weld seam to be cleaned. The above cleaning process is repeated to achieve continuous cleaning operation of multiple weld seams on the tower foot.

[0045] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A high-efficiency mobile welding device for the legs of angle steel towers, comprising a welding table (1) equipped with a lifting mechanism, wherein the tower legs (2) to be welded are placed on the welding table (1), characterized in that, The lifting mechanism is equipped with a fixed block (7), and the bottom of the fixed block (7) is provided with a convex groove (13) and a pressing plate (9) is fixedly connected. The pressing plate (9) is provided with multiple arc grooves (8) at equal intervals inside, and each arc groove (8) is provided with a clutch mechanism. The convex groove (13) is provided with a driving mechanism for driving the clutch mechanism to run. Each clutch mechanism is provided with two swing drive plates (10), and one end of each swing drive plate (10) is hinged with a follower clamping plate (14). Each follower clamping plate (14) is provided with a parallel constraint mechanism above it for constraining the motion posture of the follower clamping plate (14) during the swing of the swing drive plate (10). The lifting mechanism is equipped with a cleaning drive motor (4) and a rotating ring (5), and a second drive gear (22) is installed on the output shaft end of the cleaning drive motor (4). An internal gear (21) that meshes with the second drive gear (22) is fixedly connected to the inner wall of the rotating ring (5). A vertical electric telescopic rod (25) is installed on the outer wall of the rotating ring (5), and a horizontal electric telescopic rod (24) is fixedly connected to the telescopic end of the vertical electric telescopic rod (25), and a right-angled triangle plate (23) is fixedly connected to the telescopic end of the horizontal electric telescopic rod (24). The three corners of the right-angled triangle (23) are rotatably connected to drive rollers (28), and the right-angled part of the right-angled triangle (23) is set towards the tower foot (2) to be welded. The outer walls of the three drive rollers (28) are fitted with cleaning belts (26), and the outer walls of the cleaning belts (26) are provided with multiple cleaning bristles (27). One of the drive rollers (28) is provided with a servo motor (29) at the top.

2. The high-efficiency mobile angle steel tower foot welding device according to claim 1, characterized in that, The lifting mechanism includes a mounting frame (3) and a hydraulic rod (6). The mounting frame (3) is fixedly connected to the top outer wall of the welding table (1), and the hydraulic rod (6) is mounted on the mounting frame (3).

3. The high-efficiency mobile angle steel tower foot welding device according to claim 1, characterized in that, The engagement / disengagement mechanism includes a driven gear (18), two drive shafts (19) and two engagement / disengagement gears (20). The two drive shafts (19) are rotatably connected inside the arc-shaped groove (8). The two engagement / disengagement gears (20) are respectively fixedly connected to the outer wall of the corresponding drive shaft (19) and mesh with each other. The driven gear (18) is fixedly connected to the top outer wall of one of the drive shafts (19).

4. The high-efficiency mobile angle steel tower foot welding device according to claim 3, characterized in that, The driving mechanism includes a drive gear (11) and a clamping drive motor (12). The clamping drive motor (12) is mounted on the inner wall of the top of the convex groove (13), and the drive gear (11) is mounted on the shaft end of the output shaft of the clamping drive motor (12).

5. The high-efficiency mobile angle steel tower foot welding device according to claim 1, characterized in that, The parallel constraint mechanism includes a connecting column (15), a constraint adjustment plate (16), and a constraint fixing plate (17). One end of the constraint fixing plate (17) is fixedly connected to the top outer wall of the pressing plate (9). One end of the constraint adjustment plate (16) is rotatably connected to the constraint fixing plate (17). The connecting column (15) is rotatably connected to the other end of the constraint adjustment plate (16), and the bottom end of the connecting column (15) is rotatably connected to the top outer wall of the follower clamping plate (14).

6. The high-efficiency mobile angle steel tower foot welding device according to claim 5, characterized in that, The swing drive plate (10), follower clamping plate (14), constraint adjustment plate (16) and constraint fixing plate (17) constitute a parallelogram mechanism, so that during the rotation of the swing drive plate (10), the follower clamping plate (14) always remains parallel to the constraint fixing plate (17).

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