A tower seam welding apparatus

Abstract

The present application relates to the technical fields of metal component welding and automatic equipment manufacturing, in particular to a tower gap welding equipment, which comprises a welding gun and an automatic powder filling mechanism moving synchronously with the welding gun. The automatic powder filling mechanism comprises a hopper, a discharging pipe, a gap measuring roller, a discharging valve and a material guiding piece. The gap measuring roller has a V-shaped sharp edge rolling into the gap to be welded and has a downward tendency. The valve core of the discharging valve is connected with the gap measuring roller and can change the opening of the discharging pipe by lifting. The material guiding piece guides the discharged welding powder to the gap bypassing the gap measuring roller. The present application uses the mechanism that the gap measuring roller adapts to the gap width and drives the valve core to sink, so as to realize the accurate filling of the welding powder with the increase of the powder in wide gap and the decrease of the powder in narrow gap, solve the problems of welding collapse and material waste caused by constant powder supply in the prior art, and at the same time, cooperate with the follow-up material shovel and the adjustable lifting walkway to significantly improve the consistency of the non-uniform gap welding quality and the automatic operation level.

Description

Technical Field

[0001] This invention relates to the field of metal component welding and automated equipment manufacturing technology, specifically to a welding equipment for iron tower gaps. Background Technology

[0002] In the field of modern metal component manufacturing, welding equipment manufacturing technologies such as automatic and semi-automatic electric arc and plasma arc welding machines have matured and are widely used in highly automated production scenarios such as intelligent casting islands. Especially in the welding of long, straight seams for large steel structural components such as power transmission towers, higher requirements are placed on the automated control of welding precision.

[0003] However, existing welding equipment still has significant shortcomings when welding gaps in steel towers with complex tolerances: due to processing and assembly errors, the width of the gap to be welded often varies irregularly. Existing automatic welding auxiliary mechanisms typically use a fixed flow rate for powder supply, which cannot adaptively adjust the amount of welding powder according to the real-time width of the gap. This leads to weld collapse or incomplete penetration in wider gaps due to insufficient powder filling, while in narrower gaps, excessive powder accumulation causes overflow, interfering with the stability of the subsequent welding arc and resulting in significant waste of welding materials. Furthermore, existing equipment lacks an effective means to directly and precisely link the detection of the gap's physical dimensions with the flow rate adjustment mechanism, resulting in a lag between the detection and powder filling processes, making it difficult to achieve a highly consistent weld formation benchmark. Summary of the Invention

[0004] Therefore, it is necessary to provide a welding device for steel tower gaps to address the existing technical problems.

[0005] To address the problems of existing technologies, the technical solution adopted in this invention is: a welding device for steel tower gaps, comprising:

[0006] A welding torch is used to weld seams.

[0007] An automatic powder filling mechanism is distributed at intervals with the welding torch along the length of the weld gap, and the welding torch and the automatic powder filling mechanism can move synchronously along the length of the weld gap. The automatic powder filling mechanism includes:

[0008] A hopper equipped with a discharge pipe;

[0009] The seam measuring roller is mounted below the hopper in a way that allows it to slide vertically and has a downward pressing tendency. The thickness of the outer radial periphery of the seam measuring roller gradually decreases from the center outward and forms a V-shaped sharp edge that rolls and fits into the gap to be welded.

[0010] A discharge valve is provided inside the discharge pipe, including a valve core connected to the measuring roller and capable of changing the opening of the discharge pipe by lifting and lowering.

[0011] A guide component, connected to the discharge pipe, is used to guide the discharged welding powder around the seam measuring roller and into the gap to be welded;

[0012] The measuring roller adaptively sinks downward according to the width of the gap to be welded, and changes the opening of the discharge pipe through the valve core, thereby realizing the filling of welding powder with increased volume in wide gaps and decreased volume in narrow gaps.

[0013] Furthermore, the welding torch is provided with a moving mechanism on its side for moving it horizontally along the length of the gap to be welded. The automatic powder filling mechanism also includes an outer sleeve that is vertically arranged and connected to the moving mechanism. The discharge pipe is located inside the upper end of the outer sleeve and is coaxially fixed to it. The hopper is located above the outer sleeve, and the lower end of the hopper is connected to the upper end of the discharge pipe.

[0014] Furthermore, the lower end of the outer sleeve is provided with a floating connecting tube that is slidably connected to it on the same axis. The measuring roller is vertically arranged below the floating connecting tube, and the measuring roller is fixedly connected to the floating connecting tube through a wheel frame. The outer diameter of the discharge pipe is smaller than the inner diameter of the outer sleeve, and the outer wall of the discharge pipe is provided with a ring-shaped boss on the same axis. The outer sleeve is provided with a spring that is coaxially sleeved outside the discharge pipe. The upper end of the spring abuts against the ring-shaped boss, and the lower end abuts against the floating connecting tube.

[0015] Furthermore, the guide component is an arc-shaped guide tube located on the outer periphery of the seam measuring roller and curved along its circumferential direction. The upper end of the arc-shaped guide tube is connected to the lower end of the floating connecting tube, and the lower end of the arc-shaped guide tube extends downward toward the seam measuring roller and points toward the gap to be welded.

[0016] Furthermore, the lower end of the discharge pipe is coaxially inserted into the upper end of the floating connecting pipe. The discharge valve also includes a valve stem coaxially disposed within the floating connecting pipe. The lower end of the valve stem is fixedly connected to the inner wall of the floating connecting pipe, and the upper end of the valve stem extends into the discharge pipe. The valve core is fixedly connected to the top of the valve stem. The inner wall of the discharge pipe is formed with a conical discharge port. The valve core is frustoconical, and its outer wall can fit against the conical discharge port to seal the conical discharge port by rising. The outer edge of the valve core is provided with several leakage holes. When the valve core seals the conical discharge port, the conical discharge port seals the leakage holes.

[0017] Furthermore, the lower end of the valve stem is connected to a discharge platform, the top of the discharge platform is formed with a guide ramp that is inclined toward the inner cavity of the arc-shaped guide tube, and the lower end of the arc-shaped guide tube is connected to a discharge nozzle with a gradually narrowing inner cavity, the cross-section of the discharge nozzle being V-shaped.

[0018] Furthermore, the outer wall of the outer sleeve is fixedly provided with a vertically downward floating limiting plate, and the floating limiting plate is provided with a strip-shaped limiting groove with closed ends along its length direction. The outer wall of the floating connecting tube is formed with a limiting pin that extends horizontally and slides in cooperation with the strip-shaped limiting groove.

[0019] Furthermore, the outer wall of the outer sleeve is fixedly provided with a connecting curved plate that bends downward and extends toward the discharge nozzle, and the lower end of the connecting curved plate is fixedly provided with a material shovel for moving to remove excess powder in the gap.

[0020] Furthermore, a horizontally positioned strip welding table is provided below the welding torch to support the workpiece to be welded. A strip mounting groove is provided in the middle of the strip welding table along its length. A lifting platform is provided in the strip mounting groove for the measuring roller to return and roll in contact with the workpiece. An initial parking platform and a final parking platform are provided at both ends of the strip welding table for the measuring roller to stop. The top surfaces of the initial parking platform and the final parking platform are flush with the top surface of the workpiece to be welded. The final parking platform is provided with a ramp extending toward the lifting platform, and the end of the ramp extending toward the lifting platform gradually slopes downward.

[0021] Furthermore, the strip welding table is provided with a screw slide table at one end near the end of the rolling stroke of the measuring roller for driving the lifting and lowering of the final parking platform. The strip welding table is provided with a lifting cylinder for driving the lifting and lowering of the initial parking platform. The top surfaces of the initial parking platform and the final parking platform are both formed with height limiting plates extending towards the lifting platform. The two ends of the lifting platform are respectively located below the two height limiting plates. Several slide cylinders for driving the lifting platform to lift and lower are provided below the lifting platform. When the lifting platform abuts against the height limiting plates, the top surfaces of the lifting platform, the initial parking platform, and the final parking platform are flush.

[0022] The beneficial effects of this invention compared to the prior art are:

[0023] By incorporating a V-shaped, sharp-edged measuring roller in the automatic powder filling mechanism and linking it with a valve core in the discharge pipe, the discharge opening is adaptively adjusted according to the width of the weld gap, ensuring precise dynamic filling of welding powder with "increased quantity in wide gaps and reduced quantity in narrow gaps." Combined with a guide component that directs the welding powder around the measuring roller into the gap, and the synchronous translation of the powder filling mechanism and the welding torch, the logical delay between the detection, powder filling, and welding processes is effectively eliminated. This fundamentally solves the problems of weld collapse or powder accumulation and waste caused by a constant powder supply in existing technologies, significantly improving the consistency of weld formation quality and the automation and intelligence level of equipment operation. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0025] Figure 2 This is a partial structural schematic diagram of the present invention;

[0026] Figure 3 This is a three-dimensional structural diagram of the automatic powder filling mechanism;

[0027] Figure 4 yes Figure 3 A magnified view of the area indicated by A1 in the diagram;

[0028] Figure 5 This is a top view of the automatic powder filling mechanism;

[0029] Figure 6 yes Figure 5 Sectional view along line AA;

[0030] Figure 7 yes Figure 6 The enlarged view of the area indicated by A2 in the diagram;

[0031] Figure 8 This is a three-dimensional structural diagram of the valve core;

[0032] Figure 9 This is a three-dimensional structural diagram of a strip welding station;

[0033] Figure 10 This is a planar sectional view of a strip welding station;

[0034] Figure 11 yes Figure 10 The enlarged view shown in A3.

[0035] The following are the labels in the diagram: 1. Welding torch; 2. Automatic powder filling mechanism; 3. Hopper; 4. Discharge pipe; 5. Measuring roller; 6. V-shaped sharp edge; 7. Valve core; 8. Moving mechanism; 9. Outer sleeve; 10. Floating connecting pipe; 11. Wheel frame; 12. Annular boss; 13. Spring; 14. Arc-shaped guide pipe; 15. Valve stem; 16. Conical discharge port; 17. Leakage hole; 18. Drop platform; 19. Guide slide; 20. Discharge nozzle; 21. Floating limit plate; 22. Strip limit groove; 23. Limit pin; 24. Connecting bend plate; 25. Material shovel; 26. Strip welding table; 27. Lifting platform; 28. Initial parking platform; 29. ​​Final parking platform; 30. Inclined platform; 31. Screw slide; 32. Lifting cylinder; 33. Height limit plate; 34. Slide cylinder. Detailed Implementation

[0036] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0037] refer to Figures 1 to 11 The illustrated tower gap welding equipment comprises a welding torch 1 and an automatic powder filling mechanism 2. The welding torch 1 is used for high-temperature fusion welding of the gap to be welded, achieving a stable connection between tower components. The automatic powder filling mechanism 2 always operates before the welding torch 1, detecting changes in the gap width along its length and pre-filling the gap with welding powder based on these changes. Furthermore, the automatic powder filling mechanism 2 is spaced apart from the welding torch 1 along the length of the gap, ensuring orderly spatial and temporal connection between powder filling and welding. In addition, the welding torch 1 and the automatic powder filling mechanism 2 can move synchronously along the length of the gap, thus ensuring the continuity of powder filling and the consistency of weld quality throughout the welding process.

[0038] In actual operation, in order to accurately adjust the amount of powder added, such as Figure 3 and Figure 5 As shown, the automatic powder filling mechanism 2 adopts a special mechanical linkage structure. Specifically, the automatic powder filling mechanism 2 includes a hopper 3, a gap measuring roller 5, a discharge valve, and a guide component. The hopper 3 is equipped with a discharge pipe 4 for discharging welding powder. The gap measuring roller 5 is mounted below the hopper 3 in a way that allows it to slide vertically and is subjected to a downward pressing force. The thickness of the radial outer periphery of the gap measuring roller 5 gradually decreases from the center outwards, forming a V-shaped sharp edge 6 that rolls and fits into the gap to be welded. Its core function is to act as a physical sensor that directly penetrates into the gap to sense changes in the gap width.

[0039] In order to convert physical displacement into flow control signals, such as Figure 7As shown, the discharge valve is located inside the discharge pipe 4, and includes a valve core 7 connected to the seam measuring roller 5 and capable of adjusting the opening of the discharge pipe 4 by raising and lowering it. A guide component connected to the discharge pipe 4 directs the discharged welding powder around the seam measuring roller 5 into the weld gap, preventing interference between the powder and the roller. During this process, the seam measuring roller 5 adaptively sinks downwards according to the width of the weld gap; the wider the gap, the deeper the seam measuring roller 5 sinks. This, in turn, changes the opening of the discharge pipe 4 via the valve core 7, achieving intelligent filling of welding powder with increased volume in wide gaps and decreased volume in narrow gaps. This significantly improves the efficiency of welding material utilization and the quality of weld formation.

[0040] Considering the overall stability of the device's movement, such as Figure 1 , Figure 2 and Figure 7 As shown, a moving mechanism 8 is provided on the side of the welding torch 1 to drive it to move horizontally along the length of the gap to be welded. The automatic powder filling mechanism 2 also includes an outer sleeve 9 that is vertically arranged and connected to the moving mechanism 8. The discharge pipe 4 is located inside the upper end of the outer sleeve 9 and is coaxially fixed to it, providing a stable support boundary for the internal components through the outer sleeve 9. The hopper 3 is located above the outer sleeve 9, and the lower end of the hopper 3 is connected to the upper end of the discharge pipe 4, thereby constructing a sealed material storage and conveying channel from top to bottom.

[0041] In the above sleeve structure, in order to achieve the floating function of the measuring roller 5, such as Figure 7 As shown, a floating connecting tube 10 is provided coaxially and slidably connected to the lower end of the outer sleeve 9. The seam measuring roller 5 is vertically arranged below the floating connecting tube 10, and the seam measuring roller 5 is fixedly connected to the floating connecting tube 10 through the wheel frame 11, so that the up and down movement of the roller can directly drive the connecting tube to move synchronously. The outer diameter of the discharge pipe 4 is smaller than the inner diameter of the outer sleeve 9, and a ring boss 12 is coaxially provided on the outer wall of the discharge pipe 4. A spring 13 is provided coaxially outside the discharge pipe 4 inside the outer sleeve 9. The upper end of the spring 13 abuts against the ring boss 12, and the lower end abuts against the floating connecting tube 10. The presence of the spring 13 gives the seam measuring roller 5 a continuous downward pressure tendency, so that it can respond quickly when encountering changes in the gap.

[0042] During the welding process, to ensure that the welding powder is accurately applied to the area that the measuring roller 5 has passed over and whose width has been measured, such as... Figure 3 and Figure 6As shown, the guide component is designed as an arc-shaped guide tube 14 located on the outer periphery of the measuring roller 5 and curved along its circumference. It is noteworthy that the arc-shaped guide tube 14 is positioned behind the measuring roller 5 in the welding travel direction. That is, the measuring roller 5 first completes the detection of the current gap width, and then the arc-shaped guide tube 14 follows closely behind, guiding the welding powder into the gap to be welded that has already been detected by the measuring roller 5. The upper end of the arc-shaped guide tube 14 is connected to the lower end of the floating connecting tube 10, and its lower end extends downwards from the measuring roller 5 and points towards the gap to be welded. This arc-shaped path design not only effectively utilizes the limited internal space of the equipment but also fully leverages gravity and mechanical guidance, allowing the welding powder to bypass the central axis of the measuring roller 5 and accurately fall into the gap to be welded, thus ensuring the accuracy and timeliness of the welding powder filling.

[0043] Furthermore, regarding the refined construction of the discharge valve, such as... Figure 7 and Figure 8 As shown, the lower end of the discharge pipe 4 is coaxially inserted into the upper end of the floating connecting pipe 10 to form a dynamic seal. The discharge valve also includes a valve stem 15 coaxially disposed within the floating connecting pipe 10. The lower end of the valve stem 15 is fixedly connected to the inner wall of the floating connecting pipe 10, and the upper end of the valve stem 15 extends into the discharge pipe 4. The valve core 7 is fixedly connected to the top of the valve stem 15. The inner wall of the discharge pipe 4 is formed with a conical discharge port 16, and the valve core 7 is frustoconical, with its outer wall able to fit against the conical discharge port 16. Its working principle is as follows: when the measuring roller 5 rises due to the action of an external support (such as a flat parking platform or a return lifting platform 27), it will move the floating connecting pipe 10 upward, thereby driving the valve stem 15 and the valve core 7 to rise together, so that the frustoconical valve core 7 fits tightly against the conical discharge port 16, thereby sealing the conical discharge port 16. Conversely, when the measuring roller 5 sinks downwards at the weld due to gravity and the downward pressure of the spring 13, the floating connecting pipe 10, valve stem 15, and valve core 7 will descend accordingly, causing the conical discharge port 16 to separate from the valve core 7, thereby opening the discharge channel and allowing welding powder to fall. Furthermore, the outer edge of the valve core 7 is provided with several leakage holes 17. When the valve core 7 blocks the conical discharge port 16, the conical discharge port 16 simultaneously blocks the leakage holes 17, thereby completely cutting off the material flow and ensuring no welding powder leakage in non-working states or when the weld width is mismatched.

[0044] At the end of the material flow, such as Figure 3 and Figure 7 As shown, the lower end of the valve stem 15 is connected to a discharge platform 18. The top of the discharge platform 18 is formed with a guide ramp 19 that slopes towards the inner cavity of the arc-shaped guide tube 14. Its function is to prevent welding powder from accumulating inside the tube and ensure smooth material discharge. The lower end of the arc-shaped guide tube 14 is connected to a discharge nozzle 20 with a gradually narrowing inner cavity. The cross-section of the discharge nozzle 20 is V-shaped. This narrowing and V-shaped structure can limit the diffusion range of the powder, making it fit the shape of the gap in the iron tower and ensuring the accuracy of powder filling.

[0045] To prevent internal components from excessively detaching or shifting when there are no workpieces, such as Figure 3 and Figure 4 As shown, a vertically downward floating limiting plate 21 is fixedly provided on the outer wall of the outer sleeve 9. A strip-shaped limiting groove 22 with closed ends is formed along the length of the floating limiting plate 21. A limiting pin 23 with a horizontal extension and sliding engagement with the strip-shaped limiting groove 22 is formed on the outer wall of the floating connecting tube 10. The function of this limiting mechanism is to restrict the vertical movement of the floating connecting tube 10 and the measuring roller 5, ensuring that their movement remains within a safe range.

[0046] In addition, to ensure the smoothness of the weld surface, such as Figure 1 and Figure 3 As shown, the outer wall of the outer sleeve 9 is also fixedly provided with a connecting curved plate 24 that bends downward and extends toward the discharge nozzle 20. The lower end of the connecting curved plate 24 is fixedly provided with a material shovel 25 for scraping away excess powder in the gap. This material shovel 25 moves synchronously with the entire mechanism, scraping away excess welding powder exceeding the gap depth and allowing it to slide down along the top surface of the workpiece to be welded, thus providing a highly consistent reference surface for subsequent welding with the welding torch 1. Considering the recycling and reuse of welding powder, in practical applications, a dedicated collection hopper (not shown in the figure) can be set at one end of the lifting platform 27 near the final stopping platform 29 to effectively collect and recover the residual material scraped off by the material shovel 25, improving material utilization and reducing waste.

[0047] Considering the loading and unloading of workpieces and the reciprocating operation of equipment in actual production, such as Figures 9 to 11 As shown, a horizontally positioned strip welding table 26 is provided below the welding torch 1 to support the workpiece to be welded. A strip mounting groove is provided along the length of the strip welding table 26 in its middle, and a lifting platform 27 is provided within the groove for the measuring roller 5 to roll smoothly during its return stroke. At both ends of the strip welding table 26 are an initial parking platform 28 and a final parking platform 29 for the measuring roller 5 to rest, respectively. The top surfaces of both the initial parking platform 28 and the final parking platform 29 are flush with the top surface of the workpiece to be welded. Notably, the final parking platform 29 has a ramp 30 extending towards the lifting platform 27, and the end of the ramp 30 extending towards the lifting platform 27 gradually slopes downwards. Its function is to guide the measuring roller 5 smoothly from the surface of the workpiece to the standby state and to provide a gentle transition during the return stroke.

[0048] In the logic control of the entire welding cycle, this embodiment provides a workpiece height adjustment and welding automation mechanism. For example... Figure 7 , Figure 9 and Figure 10As shown, the strip welding table 26 has a lead screw slide 31 at one end near the end of the rolling stroke of the measuring roller 5, which is used to drive the final stop platform 29 to rise and fall. The height of the final stop platform 29 can be adjusted by the lead screw slide 31 to accommodate workpieces of different thicknesses. At the same time, the strip welding table 26 is equipped with a lifting cylinder 32 for driving the initial stop platform 28 to rise and fall. The top surfaces of both the initial stop platform 28 and the final stop platform 29 are formed with height limiting plates 33 extending towards the lifting platform 27. The two ends of the lifting platform 27 are located below the two height limiting plates 33, and several slide cylinders 34 are provided below it to drive its rise and fall. When the lifting platform 27 abuts against the height limiting plates 33, the top surfaces of the lifting platform 27, the initial stop platform 28, and the final stop platform 29 are flush. At this time, the measuring roller 5 is in the upper limit state of being lifted up. Since the valve core 7 blocks the conical discharge port 16, the welding powder stops falling.

[0049] Workpiece height adjustment procedure (performed during initial machining or when changing to workpieces of different thicknesses; no adjustment is required during normal machining):

[0050] To accommodate workpieces of varying thicknesses, the workpiece height needs to be adjusted before welding. First, the lifting platform 27 is lowered by the slide cylinder 34. Then, the workpiece to be welded is placed on the lowered lifting platform 27. Next, the lifting platform 27 rises, bringing the workpiece to a predetermined height. At this point, the height of the final stop platform 29 is adjusted by the lead screw slide 31 (the lead screw slide 31 has high precision and allows for accurate adjustment) to make it flush with the top surface of the workpiece, and the height limit plate 33 of the final stop platform 29 abuts against the top surface of the workpiece. Subsequently, the lifting cylinder 32 adjusts the height of the initial stop platform 28 synchronously according to the adjusted height of the lead screw slide 31 (in actual use, a laser sensor is installed on the initial stop platform 28 to sense the height of the final stop platform 29), ultimately ensuring that the top surfaces of both the initial stop platform 28 and the final stop platform 29 are flush with the top surface of the workpiece, and that their respective height limit plates 33 reliably abut against the top of the workpiece. During this height adjustment process, the connection between the outer sleeve 9 and the moving mechanism 8 is designed to be detachable or adjustable to ensure that the measuring roller 5 can synchronously adapt to the adjusted height. To prevent accidental leakage of welding powder, the discharge valve must be kept sealed during height adjustment; it is possible to temporarily refrain from adding welding powder to the hopper 3 at this stage, or to first discharge any remaining welding powder from the hopper 3. Welding powder can only be added to the hopper 3 after the height adjustment is complete.

[0051] Welding process and automated operation:

[0052] After entering the welding cycle, when the measuring roller 5 rolls from the initial resting table 28 onto the workpiece gap, it sinks into the gap due to the loss of flat support and the force of the spring 13. The linkage valve core 7 moves down to open the conical discharge port 16. At this time, the automatic powder filling mechanism 2 begins to add or subtract powder according to the gap width. The measuring roller 5, the automatic powder filling mechanism 2 and the welding torch 1 move synchronously to complete the welding of the entire gap. As the measuring roller 5 rolls from the workpiece to the final resting table 29, as the measuring roller 5 exits the gap and is connected by the ramp 30, it will gradually change from a descending state to an ascending state. In this way, the conical discharge port 16 will be gradually blocked by the valve core 7, and finally the welding powder will stop falling.

[0053] Welding completion and equipment cycle:

[0054] After welding is completed, the seam measuring roller 5 stops at the final stop platform 29. At this time, the slide cylinder 34 drives the lifting platform 27 to descend so that the operator can remove the welded workpiece. To improve material utilization, the residual powder scraped off by the shovel 25 will slide down the top surface of the workpiece to be welded. In actual use, a collection hopper for collecting residual material can be set at one end of the lifting platform 27 near the final stop platform 29 for recycling. After the workpiece is removed, the lifting platform 27 rises again to reset to a height flush with the top surfaces of the initial parking platform 28 and the final parking platform 29. This reset state provides a smooth path for the return of the weld seam measuring roller 5, allowing it to return to its initial position along the set return path (from the final parking platform 29, through the lifting platform 27 and the initial parking platform 28). During the return process, since the top surfaces of the initial parking platform 28, the final parking platform, and the lifting platform 27 are flush with the top surface of the workpiece, the weld seam measuring roller 5 will always be in an upward position, so the weld seam will not fall. Figure 1 The two parallel arrows shown indicate the direction of the seam measuring roller 5 (solid line) and the return direction (dashed line). Once the seam measuring roller 5 returns to its initial position, the lifting platform 27 descends again to prepare for loading the next workpiece to be welded. The entire process achieves a high degree of automation and intelligence through precise logic control, ensuring continuous and efficient production operations.

[0055] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A welding device for steel tower gaps, characterized in that, include: Welding torch (1); An automatic powder filling mechanism (2) moves synchronously with the welding torch (1). The automatic powder filling mechanism (2) includes: The hopper (3) is equipped with a discharge pipe (4); The measuring roller (5) is mounted below the hopper (3) in a way that allows it to slide in the vertical direction and has a downward pressing tendency. The thickness of the outer radial periphery of the measuring roller (5) gradually decreases from the center outward and forms a V-shaped sharp edge (6) that rolls and fits into the gap to be welded. The discharge valve is located inside the discharge pipe (4) and includes a valve core (7) connected to the measuring roller (5) and capable of changing the opening of the discharge pipe (4) by lifting and lowering. The guide component, connected to the discharge pipe (4), is used to guide the discharged welding powder around the measuring roller (5) and into the gap to be welded.

2. The tower gap welding equipment according to claim 1, characterized in that, The welding torch (1) is provided with a moving mechanism (8) on its side for moving it along the length of the weld gap. The welding torch (1) and the automatic powder filling mechanism (2) are distributed at intervals. The automatic powder filling mechanism (2) also includes an outer sleeve (9) that is vertically arranged and connected to the moving mechanism (8). The discharge pipe (4) is located inside the upper end of the outer sleeve (9) and is coaxially fixed to it. The hopper (3) is located above the outer sleeve (9). The lower end of the hopper (3) is connected to the upper end of the discharge pipe (4).

3. The tower gap welding equipment according to claim 2, characterized in that, The lower end of the outer sleeve (9) is provided with a floating connecting tube (10) that is slidably connected to it on the same axis. The measuring roller (5) is vertically arranged below the floating connecting tube (10), and the measuring roller (5) is fixedly connected to the floating connecting tube (10) through the wheel frame (11). The outer diameter of the discharge pipe (4) is smaller than the inner diameter of the outer sleeve (9), and the outer wall of the discharge pipe (4) is provided with a ring boss (12) on the same axis. The outer sleeve (9) is provided with a spring (13) that is coaxially sleeved outside the discharge pipe (4). The upper end of the spring (13) abuts against the ring boss (12), and the lower end abuts against the floating connecting tube (10).

4. The tower gap welding equipment according to claim 3, characterized in that, The guide is an arc-shaped guide tube (14) located on the outer periphery of the measuring roller (5) and bent along its circumference. The upper end of the arc-shaped guide tube (14) is connected to the lower end of the floating connecting pipe (10), and the lower end of the arc-shaped guide tube (14) extends downward toward the measuring roller (5) and points toward the gap to be welded.

5. The tower gap welding equipment according to claim 4, characterized in that, The lower end of the discharge pipe (4) is coaxially inserted into the upper end of the floating connecting pipe (10). The discharge valve also includes a valve stem (15) coaxially disposed in the floating connecting pipe (10). The lower end of the valve stem (15) is fixedly connected to the inner wall of the floating connecting pipe (10). The upper end of the valve stem (15) extends into the discharge pipe (4). The valve core (7) is fixedly connected to the top of the valve stem (15). The inner wall of the discharge pipe (4) is formed with a conical discharge port (16). The valve core (7) is frustoconical. Its outer wall can fit against the conical discharge port (16) so as to block the conical discharge port (16) by rising. The outer edge of the valve core (7) is provided with several leakage holes (17). When the valve core (7) blocks the conical discharge port (16), the conical discharge port (16) blocks the leakage holes (17).

6. The tower gap welding equipment according to claim 5, characterized in that, The lower end of the valve stem (15) is connected to a discharge platform (18), and the top of the discharge platform (18) is formed with a guide slope (19) that is inclined toward the inner cavity of the arc-shaped guide tube (14). The lower end of the arc-shaped guide tube (14) is connected to a discharge nozzle (20) with a gradually narrowing inner cavity, and the cross-section of the discharge nozzle (20) is V-shaped.

7. The tower gap welding equipment according to claim 3, characterized in that, The outer wall of the outer sleeve (9) is fixed with a vertically downward floating limiting plate (21). The floating limiting plate (21) has a strip-shaped limiting groove (22) with closed ends along its length direction. The outer wall of the floating connecting pipe (10) is formed with a limiting pin (23) that extends horizontally and slides with the strip-shaped limiting groove (22).

8. The tower gap welding equipment according to claim 6, characterized in that, The outer wall of the outer sleeve (9) is fixedly provided with a connecting bent plate (24) that bends downward and extends toward the discharge nozzle (20). The lower end of the connecting bent plate (24) is fixedly provided with a material shovel (25) for moving to remove excess powder in the gap.

9. The tower gap welding equipment according to claim 1, characterized in that, Below the welding torch (1) is a horizontally arranged strip welding table (26) for supporting the workpiece to be welded. The middle part of the strip welding table (26) is provided with a strip mounting groove along its length. The strip mounting groove is provided with a lifting platform (27) for the measuring roller (5) to roll back and fit. At both ends of the strip welding table (26) are provided an initial parking platform (28) and a final parking platform (29) for the measuring roller (5) to stop. The top surfaces of the initial parking platform (28) and the final parking platform (29) are flush with the top surface of the workpiece to be welded. The final parking platform (29) is provided with a ramp (30) extending toward the lifting platform (27), and the end of the ramp (30) extending toward the lifting platform (27) gradually slopes downward.

10. The tower gap welding equipment according to claim 9, characterized in that, The strip welding table (26) is provided with a screw slide (31) for driving the final parking platform (29) to rise and fall at one end near the end of the rolling stroke of the measuring roller (5). The strip welding table (26) is provided with a lifting cylinder (32) for driving the initial parking platform (28) to rise and fall. The top surfaces of the initial parking platform (28) and the final parking platform (29) are formed with height limiting plates (33) extending toward the lifting platform (27). The two ends of the lifting platform (27) are respectively located below the two height limiting plates (33). The lifting platform (27) is provided with several slide cylinders (34) for driving its rise and fall below it. When the lifting platform (27) abuts against the height limiting plate (33), the top surfaces of the lifting platform (27), the initial parking platform (28) and the final parking platform (29) are flush.

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