Welding device for a bulldozer bucket

Abstract

The utility model relates to a kind of welding device of bulldozer bucket, belong to bulldozer bucket production technical field.Left side slide bar fixed seat, right side slide bar fixed seat are provided with mutually parallel upper slide bar, lower slide bar between interval, the upper slide bar, lower slide bar are slidably provided with multiple groups equidistantly spaced distribution's welding torch fixing frame, the bottom end of each group welding torch fixing frame is equipped with a group welding torch by welding torch connecting seat, multiple groups welding torch fixing frame between be equipped with for linkage multiple welding torch fixing frame telescopic frame, the fixed frame pitch fine adjustment mechanism for driving driving connecting seat to move along the length direction of upper slide bar is set on the rear fixed plate.The utility model has the following beneficial effects: the bottom end of each group welding torch fixing frame is equipped with a group welding torch by welding torch connecting seat, multiple welding torch equidistantly distributed and can move with rear fixed plate synchronously, can complete the welding of multiple parallel, equidistant welds on bucket at one time, greatly improve welding efficiency.

Description

Technical Field

[0001] This utility model relates to a welding device for bulldozer buckets, belonging to the field of bulldozer bucket manufacturing technology. Background Technology

[0002] Bulldozer buckets are used as auxiliary equipment for bulldozers and are manufactured using welding techniques. Due to rising labor costs, robots are largely replacing workers in many labor-intensive jobs.

[0003] Current bulldozer buckets require the welding of multiple stiffening plates, mostly long strips of steel plates perpendicular to the bulldozing direction with consistent spacing between adjacent plates. These plates are crucial for enhancing the bucket's resistance to deformation and load-bearing capacity. However, current welding techniques for these stiffening plates are incomplete and have the following drawbacks: 1. Manual welding is susceptible to operator fatigue and skill variations, leading to deviations in the parallelism of the stiffening plates and uneven spacing. This negatively impacts the balanced stress distribution on the bucket structure and reduces work efficiency. 2. With diverse bucket models and varying spacing between parallel stiffening plates, traditional welding equipment involves cumbersome adjustment processes, making it difficult to quickly switch welding parameters between different specifications, resulting in insufficient versatility.

[0004] To solve one of the above problems, there is an urgent need for a welding device for bulldozer buckets. Utility Model Content

[0005] Based on the shortcomings of the existing technology, the technical problem to be solved by this utility model is: how to achieve the welding of multiple parallel and equidistant welds between the bucket and the stiffening plate in one go by installing a set of welding guns at the bottom of each set of welding gun fixing frames through welding gun connecting seats, with multiple welding guns equidistantly distributed and able to move synchronously with the fixing plate, thereby greatly improving welding efficiency. Therefore, a welding device for bulldozer bucket is provided.

[0006] The welding device for a bulldozer bucket according to this utility model includes a rear fixing plate. A left sliding rod fixing seat and a right sliding rod fixing seat are installed at intervals on the front side of the rear fixing plate. The device is characterized in that: an upper sliding rod and a lower sliding rod are arranged parallel to each other at intervals between the left and right sliding rod fixing seats. Multiple sets of equally spaced welding gun fixing frames are slidably arranged on the upper and lower sliding rods. A welding gun is installed at the bottom of each set of welding gun fixing frames via a welding gun connecting seat. A telescopic frame for linkage between the multiple sets of welding gun fixing frames is provided. A drive connecting seat is installed on the top of the two sets of welding gun fixing frames located at the edges. The rear fixing plate is provided with a fixing frame spacing fine-tuning mechanism that drives the drive connecting seat to move along the length direction of the upper sliding rod.

[0007] When used in conjunction with an existing gantry CNC welding machine, the rear fixed plate is connected to the moving mechanism of the gantry CNC welding machine. Each welding gun is mounted on the bottom of the welding gun mounting frame via a welding gun connecting seat. The moving mechanism drives the rear fixed plate and the welding gun assembly mounted on it to move along the weld seam trajectory of the bulldozer bucket. This allows for the simultaneous welding of multiple parallel and equidistant weld seams on the bucket, as well as the simultaneous welding of multiple stiffening plates and the bottom plate, greatly improving welding efficiency.

[0008] By mechanically equidistantly arranging and linking the welding torches, the spacing and relative position of all welding torches relative to the workpiece weld seam are always kept consistent, fundamentally guaranteeing the uniformity of weld seam distribution and the stability of welding quality.

[0009] Bulldozer buckets come in various models and specifications, and the size of the plates to be welded and the weld spacing vary. By using a fixed frame spacing fine-tuning mechanism, the welding torch spacing can be precisely adjusted, enabling the device to adapt to the welding needs of buckets of different specifications, thereby improving the equipment's versatility and applicability.

[0010] Equivalent linkage layout enables efficient and consistent batch welding. Fine-tuning mechanism solves the precision matching problem caused by workpiece manufacturing errors or specification changes. The combination of the two significantly improves production efficiency and process adaptability while ensuring the welding quality of large workpieces such as bulldozer buckets.

[0011] In any of the above embodiments, it is preferred that the telescopic frame includes multiple sets of X-shaped structures arranged in a linear manner, the ends of two adjacent sets of X-shaped structures are rotatably connected to each other to form a parallelogram, and the central fork of the X-shaped structure is hinged to the middle of the side wall of the welding gun fixing frame.

[0012] In any of the above embodiments, it is preferred that the welding torch holder is provided in five sets at equal intervals.

[0013] In any of the above embodiments, it is preferred that the cross-section of the welding gun holder is rectangular, and the welding gun holder is provided with a first through hole for the upper sliding rod to pass through and a second through hole for the lower sliding rod to pass through.

[0014] Preferably, in any of the above embodiments, the number of the fixing frame spacing fine-tuning mechanisms is the same as the number of drive connecting seats. The two sets of drive connecting seats are adjusted by the corresponding fixing frame spacing fine-tuning mechanisms. Each fixing frame spacing fine-tuning mechanism includes a third screw. One end of the third screw is fixed to the surface of the rear fixing plate through a screw fixing seat A, and the other end of the third screw is fixed to the surface of the rear fixing plate through a screw fixing seat B. The third screw passes through the drive connecting seat. Locking nuts A and B are threaded onto the third screws on both sides of the drive connecting seat, respectively, clamping the upper part of the drive connecting seat between the locking nuts A and B.

[0015] When it is necessary to reduce the spacing between multiple welding torches, select the fine-tuning mechanism for the fixing bracket on the right. The operator simply needs to use a tool to rotate locking nut A, moving it away from the drive connector. Then, the drive connector moves to the left. Finally, the operator uses a tool to rotate locking nut B, moving it closer to the drive connector, thus re-clamping the upper part of the drive connector between locking nuts A and B. During the leftward movement of the drive connector, the telescopic frame reduces the distance between the multiple welding torch fixing brackets, thereby achieving the purpose of changing the distance between two sets of welding torches, and ensuring that the distance between adjacent sets of welding torches is equal.

[0016] When adjusting the spacing between multiple welding torches, select the fine-tuning mechanism for the fixing bracket on the right. The operator simply needs to use a tool to rotate locking nut B, moving it away from the drive connector. Then, the drive connector moves to the right. Finally, the operator uses a tool to rotate locking nut A, moving it closer to the drive connector, thus re-clamping the upper part of the drive connector between locking nuts A and B. During the rightward movement of the drive connector, the telescopic frame expands the distance between the multiple welding torch fixing brackets, thereby changing the distance between two sets of welding torches, ensuring that the distance between adjacent sets of welding torches is equal.

[0017] The adjustment structure is simple and reliable, and the operation is convenient. It does not require complex electrical or hydraulic drive components. The position adjustment of the drive connection seat can be completed simply by rotating the locking nut with a tool. The operation steps are simple and easy to understand, which reduces the skill requirements of operators and the equipment maintenance costs. It is suitable for quick adjustment operations in the workshop.

[0018] Preferably, in any of the above embodiments, the number of the fixing frame spacing fine-tuning mechanisms is the same as the number of drive connection seats. The two sets of drive connection seats are adjusted by the corresponding fixing frame spacing fine-tuning mechanisms. Each fixing frame spacing fine-tuning mechanism includes an outer sleeve, a tail screw, a smooth rod, a front screw, and a telescopic slide rod. One end of the outer sleeve passes through the sleeve fixing plate and is fixedly connected to the sleeve fixing plate on the surface of the left slide rod fixing seat through a third connecting bolt assembly. The inner part of one end of the outer sleeve is provided with a threaded hole A that is threaded to the tail screw. The end of the outer sleeve away from the threaded hole A has a guide hole that slides with the telescopic slide rod. The guide hole has a square cross-section. The end of the telescopic slide rod is provided with a threaded hole B that mates with the front screw. The tail screw and the front screw are connected by a smooth rod. The threaded holes A and B have the same direction of rotation. The tail screw and the front screw have a first external thread and a second external thread, respectively. The lead of the first external thread is greater than the lead of the second external thread. The telescopic slide rod is fixedly connected to the corresponding drive connection seat through a second connecting bolt assembly.

[0019] The telescopic slide rod is parallel to the upper and lower slide rods. By using differential screw transmission, the telescopic slide rod can be slightly adjusted along its length, thereby enabling fine adjustment of the left and right positions of the drive connecting seat. The adjustment is relatively stable and the positioning is relatively accurate.

[0020] In any of the above embodiments, it is preferred that a connecting ring is integrally provided on the outer wall of one end of the outer sleeve, the connecting ring being fixedly connected to the sleeve fixing plate by a third connecting bolt assembly, and the sleeve fixing plate being welded and fixed to the surface of the left slide rod fixing seat.

[0021] In any of the above embodiments, it is preferred that the lead of the first external thread is 1.5 mm and the lead of the second external thread is 1.25 mm.

[0022] The end of the tail screw has an internal hexagonal hole, which is used in conjunction with a corresponding internal hexagonal wrench to facilitate the rotation of the tail screw. The tail screw drives the front screw to rotate through a smooth rod. The tail screw mates with the threaded hole A on the outer sleeve, and the front screw mates with the threaded hole B on the telescopic slide rod. When the tail screw rotates one revolution, it drives the telescopic slide rod to move a distance equal to the difference between the lead of the first external thread and the lead of the second external thread.

[0023] Compared with the prior art, the present invention has the following beneficial effects: The welding device for bulldozer buckets described in this utility model has a welding gun installed at the bottom of each welding gun fixing frame via a welding gun connecting seat. Multiple welding guns are equidistantly distributed and can move synchronously with the fixing plate, enabling the welding of multiple parallel and equidistant welds on the bucket in one go, and the simultaneous welding of multiple stiffening plates to the bottom plate of the bucket, greatly improving welding efficiency.

[0024] The welding device for the bulldozer bucket described in this utility model ensures that the spacing and relative position of all welding torches relative to the workpiece weld seam are always consistent through mechanical equidistant arrangement and linkage, fundamentally guaranteeing the uniformity of weld seam distribution and the stability of welding quality.

[0025] The welding device for bulldozer buckets described in this utility model addresses the issue that bulldozer buckets come in various models and specifications, and the dimensions of the plates to be welded and the weld spacing differ. By using a fixed frame spacing fine-tuning mechanism, the welding torch spacing can be precisely adjusted, enabling the device to adapt to the welding needs of buckets of different specifications and improving the versatility and applicability of the equipment.

[0026] The welding device for bulldozer buckets described in this utility model achieves efficient and consistent batch welding through an equidistant linkage layout. Furthermore, the fine-tuning mechanism solves the precision matching problem caused by workpiece manufacturing errors or specification changes. The combination of the two significantly improves production efficiency and process adaptability while ensuring the welding quality of large workpieces such as bulldozer buckets.

[0027] The welding device for bulldozer buckets described in this utility model has a simple and reliable adjustment structure, is easy to operate, and requires no complex electrical or hydraulic drive components. The position adjustment of the drive connection seat can be completed simply by rotating the locking nut with a tool. The operation steps are simple and easy to understand, reducing the skill requirements of operators and the equipment maintenance costs, and is suitable for rapid adjustment operations on the workshop site. Attached Figure Description

[0028] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0029] Figure 1 These are schematic diagrams of embodiments 1 and 2 of this utility model; Figure 2 This is a schematic diagram of the structure of Embodiment 3 of this utility model; Figure 3 This is an internal view of the fixing frame spacing fine-tuning mechanism in Example 3; Figure 4 for Figure 3 A partial cross-sectional view.

[0030] In the diagram: 1. Rear fixing plate; 2. Left slide rod fixing seat; 3. Right slide rod fixing seat; 4. Upper slide rod; 5. Lower slide rod; 6. Welding torch fixing frame; 7. Telescopic frame; 8. Welding torch connecting seat; 9. Welding torch; 10. Third screw; 11. Screw fixing seat A; 12. Screw fixing seat B; 13. Locking nut A; 14. Locking nut B; 15. Drive connecting seat; 16. Outer sleeve; 17. Connecting ring; 18. Third connecting bolt assembly; 19. Tail end screw; 20. Smooth rod; 21. Front end screw; 22. Telescopic slide rod; 23. Threaded hole A; 24. Threaded hole B; 25. Guide hole; 26. Second connecting bolt assembly; 27. Hexagonal socket hole; 28. Sleeve fixing plate. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings: The present invention will be further described below through specific embodiments, but it is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0032] Example 1, such as Figure 1 As shown, the welding device for a bulldozer bucket includes a rear fixing plate 1. A left sliding rod fixing seat 2 and a right sliding rod fixing seat 3 are installed at intervals on the front side of the rear fixing plate 1. An upper sliding rod 4 and a lower sliding rod 5 are arranged parallel to each other between the left sliding rod fixing seat 2 and the right sliding rod fixing seat 3. Multiple sets of equally spaced welding gun fixing frames 6 are slidably arranged on the upper sliding rod 4 and the lower sliding rod 5. A welding gun 9 is installed at the bottom of each set of welding gun fixing frames 6 through a welding gun connecting seat 8. A telescopic frame 7 for linkage of multiple sets of welding gun fixing frames 6 is provided between the multiple sets of welding gun fixing frames 6. A drive connecting seat 15 is installed on the top of the two sets of welding gun fixing frames 6 at the edge. The rear fixing plate 1 is provided with a fixing frame spacing fine adjustment mechanism that drives the drive connecting seat 15 to move along the length direction of the upper sliding rod 4.

[0033] When used in conjunction with a gantry-type CNC welding machine, a fixing hole is opened on the rear fixing plate. The rear fixing plate is connected to the moving mechanism of the gantry-type CNC welding machine through the first connecting bolt assembly. Each welding gun fixing frame has a welding gun installed at its bottom end through a welding gun connecting seat. The moving mechanism drives the rear fixing plate and the welding gun assembly mounted on it to move along the weld seam trajectory of the bulldozer bucket. It can complete the welding of multiple parallel and equidistant weld seams on the bucket in one go, and simultaneously complete the welding of multiple stiffening plates and the bottom plate of the bucket in one go, which greatly improves the welding efficiency.

[0034] By mechanically equidistantly arranging and linking the welding torches, the spacing and relative position of all welding torches relative to the workpiece weld seam are always kept consistent, fundamentally guaranteeing the uniformity of weld seam distribution and the stability of welding quality.

[0035] Bulldozer buckets come in various models and specifications, and the size of the plates to be welded and the weld spacing vary. By using a fixed frame spacing fine-tuning mechanism, the welding torch spacing can be precisely adjusted, enabling the device to adapt to the welding needs of buckets of different specifications, thereby improving the equipment's versatility and applicability.

[0036] Equivalent linkage layout enables efficient and consistent batch welding. Fine-tuning mechanism solves the precision matching problem caused by workpiece manufacturing errors or specification changes. The combination of the two significantly improves production efficiency and process adaptability while ensuring the welding quality of large workpieces such as bulldozer buckets.

[0037] Example 2, as Figure 1As shown, the welding device for a bulldozer bucket includes a rear fixing plate 1. A left sliding rod fixing seat 2 and a right sliding rod fixing seat 3 are installed at intervals on the front side of the rear fixing plate 1. An upper sliding rod 4 and a lower sliding rod 5 are arranged parallel to each other between the left sliding rod fixing seat 2 and the right sliding rod fixing seat 3. Multiple sets of equally spaced welding gun fixing frames 6 are slidably arranged on the upper sliding rod 4 and the lower sliding rod 5. A welding gun 9 is installed at the bottom of each set of welding gun fixing frames 6 through a welding gun connecting seat 8. A telescopic frame 7 for linkage of multiple sets of welding gun fixing frames 6 is provided between the multiple sets of welding gun fixing frames 6. A drive connecting seat 15 is installed on the top of the two sets of welding gun fixing frames 6 at the edge. The rear fixing plate 1 is provided with a fixing frame spacing fine adjustment mechanism that drives the drive connecting seat 15 to move along the length direction of the upper sliding rod 4.

[0038] Furthermore, the telescopic frame 7 includes multiple sets of X-shaped structures arranged in a linear fashion. The ends of two adjacent sets of X-shaped structures are rotatably connected to each other to form a parallelogram. The central fork of the X-shaped structure is hinged to the middle of the side wall of the welding torch fixing frame 6.

[0039] Furthermore, the welding torch holder 6 is provided with five sets of equidistant brackets.

[0040] Furthermore, the welding torch holder 6 has a rectangular cross-section, and the welding torch holder 6 is provided with a first through hole for the upper slide rod 4 to pass through and a second through hole for the lower slide rod 5 to pass through.

[0041] Furthermore, the number of the fixing frame spacing fine-tuning mechanisms is consistent with the number of drive connecting seats 15. The two sets of drive connecting seats 15 are respectively adjusted by the corresponding fixing frame spacing fine-tuning mechanisms. The fixing frame spacing fine-tuning mechanism includes a third screw 10. One end of the third screw 10 is fixed to the surface of the rear fixing plate 1 through a screw fixing seat A11, and the other end of the third screw 10 is fixed to the surface of the rear fixing plate 1 through a screw fixing seat B12. The third screw 10 passes through the drive connecting seat 15. Locking nuts A13 and B14 are threaded onto the third screw 10 on both sides of the drive connecting seat 15, respectively, clamping the upper part of the drive connecting seat 15 between the locking nuts A13 and B14.

[0042] When it is necessary to reduce the spacing between multiple sets of welding torches 9, the fine-tuning mechanism for the fixing frame spacing on the right is selected. The operator simply needs to use a tool to rotate the locking nut A13, causing it to move away from the drive connecting seat 15. Then, the drive connecting seat 15 is moved to the left. Finally, the operator uses a tool to rotate the locking nut B14, causing it to move closer to the drive connecting seat 15, thus re-clamping the upper part of the drive connecting seat 15 between the locking nuts A13 and B14. During the leftward movement of the drive connecting seat 15, the distance between the multiple sets of welding torch fixing frames 6 is reduced by the telescopic frame 7, thereby achieving the purpose of changing the distance between two sets of welding torches 9, and ensuring that the distance between adjacent sets of welding torches 9 is equal.

[0043] When adjusting the spacing between multiple welding torches 9, the fine-tuning mechanism for the fixing frame on the right is selected. The operator simply needs to use a tool to rotate the locking nut B14, moving it away from the drive connecting seat 15. Then, the drive connecting seat 15 is moved to the right. Finally, the operator uses a tool to rotate the locking nut A13, moving it closer to the drive connecting seat 15, thus re-clamping the upper part of the drive connecting seat 15 between the locking nuts A13 and B14. During the rightward movement of the drive connecting seat 15, the telescopic frame 7 expands the distance between the multiple welding torch fixing frames 6, thereby achieving the purpose of changing the distance between two sets of welding torches 9, and ensuring that the distance between adjacent sets of welding torches 9 is equal.

[0044] The adjustment structure is simple and reliable, and the operation is convenient. It does not require complex electrical or hydraulic drive components. The position adjustment of the drive connection seat can be completed simply by rotating the locking nut with a tool. The operation steps are simple and easy to understand, which reduces the skill requirements of operators and the equipment maintenance costs. It is suitable for quick adjustment operations in the workshop.

[0045] Example 3, as Figure 2 As shown, the welding device for a bulldozer bucket includes a rear fixing plate 1. A left sliding rod fixing seat 2 and a right sliding rod fixing seat 3 are installed at intervals on the front side of the rear fixing plate 1. An upper sliding rod 4 and a lower sliding rod 5 are arranged parallel to each other between the left sliding rod fixing seat 2 and the right sliding rod fixing seat 3. Multiple sets of equally spaced welding gun fixing frames 6 are slidably arranged on the upper sliding rod 4 and the lower sliding rod 5. A welding gun 9 is installed at the bottom of each set of welding gun fixing frames 6 through a welding gun connecting seat 8. A telescopic frame 7 for linkage of multiple sets of welding gun fixing frames 6 is provided between the multiple sets of welding gun fixing frames 6. A drive connecting seat 15 is installed on the top of the two sets of welding gun fixing frames 6 at the edge. The rear fixing plate 1 is provided with a fixing frame spacing fine adjustment mechanism that drives the drive connecting seat 15 to move along the length direction of the upper sliding rod 4.

[0046] Furthermore, the telescopic frame 7 includes multiple sets of X-shaped structures arranged in a linear fashion. The ends of two adjacent sets of X-shaped structures are rotatably connected to each other to form a parallelogram. The central fork of the X-shaped structure is hinged to the middle of the side wall of the welding torch fixing frame 6.

[0047] Furthermore, the welding torch holder 6 is provided with five sets of equidistant brackets.

[0048] Furthermore, the welding torch holder 6 has a rectangular cross-section, and the welding torch holder 6 is provided with a first through hole for the upper slide rod 4 to pass through and a second through hole for the lower slide rod 5 to pass through.

[0049] Furthermore, referring to Figure 3 and Figure 4 The number of the fixed frame spacing fine-tuning mechanisms is the same as the number of drive connection seats 15. The two sets of drive connection seats 15 are adjusted by the corresponding fixed frame spacing fine-tuning mechanisms. Each fixed frame spacing fine-tuning mechanism includes an outer tube 16, a tail screw 19, a smooth rod 20, a front screw 21, and a telescopic slide rod 22. One end of the outer tube 16 passes through the sleeve fixing plate 28 and is fixedly connected to the sleeve fixing plate 28 on the surface of the left slide rod fixing seat 2 by the third connecting bolt assembly 18. The inner part of one end of the outer tube 16 is provided with a threaded hole A23 that is threadedly connected to the tail screw 19. The outer tube 16 is away from the threaded hole. One end of hole A23 has a guide hole 25 that slides with telescopic slide rod 22. The guide hole 25 has a square cross-section. The end of telescopic slide rod 22 is provided with a threaded hole B24 that mates with front end screw 21. The tail end screw 19 and the front end screw 21 are connected by a smooth rod 20. The threaded hole A23 and the threaded hole B24 have the same direction of rotation. The tail end screw 19 and the front end screw 21 have a first external thread and a second external thread, respectively. The lead of the first external thread is greater than the lead of the second external thread. The telescopic slide rod 22 is fixedly connected to the corresponding drive connecting seat 15 by a second connecting bolt assembly 26.

[0050] The telescopic slide rod 22 is parallel to the upper slide rod 4 and the lower slide rod 5. The differential screw drive allows the telescopic slide rod 22 to be slightly adjusted along its length, thereby enabling fine adjustment of the left and right positions of the drive connecting seat 15. The adjustment is relatively stable and the positioning is relatively accurate.

[0051] Furthermore, a connecting ring 17 is integrally provided on the outer wall of one end of the outer sleeve 16. The connecting ring 17 is fixedly connected to the sleeve fixing plate 28 through the third connecting bolt assembly 18. The sleeve fixing plate 28 is welded and fixed to the surface of the left slide rod fixing seat 2.

[0052] Furthermore, the lead of the first external thread is 1.5 mm, and the lead of the second external thread is 1.25 mm.

[0053] Furthermore, the end of the tail screw 19 has an internal hexagonal hole 27, which is used in conjunction with a corresponding internal hexagonal wrench to facilitate the rotation of the tail screw 19. The tail screw 19 drives the front screw 21 to rotate through the smooth rod 20. The tail screw 19 engages with the threaded hole A23 on the outer sleeve 16, and the front screw 21 engages with the threaded hole B24 on the telescopic slide rod 22. When the tail screw 19 rotates one revolution, it drives the telescopic slide rod 22 to move a distance equal to the difference between the lead of the first external thread and the lead of the second external thread.

[0054] The welding device for bulldozer buckets described in this utility model has a welding gun installed at the bottom of each welding gun fixing frame via a welding gun connecting seat. Multiple welding guns are equidistantly distributed and can move synchronously with the fixing plate, enabling the welding of multiple parallel and equidistant welds on the bucket in one go, greatly improving welding efficiency.

[0055] The welding device for the bulldozer bucket described in this utility model ensures that the spacing and relative position of all welding torches relative to the workpiece weld seam are always consistent through mechanical equidistant arrangement and linkage, fundamentally guaranteeing the uniformity of weld seam distribution and the stability of welding quality.

[0056] The welding device for bulldozer buckets described in this utility model addresses the issue that bulldozer buckets come in various models and specifications, and the dimensions of the plates to be welded and the weld spacing differ. By using a fixed frame spacing fine-tuning mechanism, the welding torch spacing can be precisely adjusted, enabling the device to adapt to the welding needs of buckets of different specifications and improving the versatility and applicability of the equipment.

[0057] The welding device for bulldozer buckets described in this utility model achieves efficient and consistent batch welding through an equidistant linkage layout. Furthermore, the fine-tuning mechanism solves the precision matching problem caused by workpiece manufacturing errors or specification changes. The combination of the two significantly improves production efficiency and process adaptability while ensuring the welding quality of large workpieces such as bulldozer buckets.

[0058] The welding device for bulldozer buckets described in this utility model has a simple and reliable adjustment structure, is easy to operate, and requires no complex electrical or hydraulic drive components. The position adjustment of the drive connection seat can be completed simply by rotating the locking nut with a tool. The operation steps are simple and easy to understand, reducing the skill requirements of operators and the equipment maintenance costs, and is suitable for rapid adjustment operations on the workshop site.

[0059] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

[0060] Any aspects of this invention not described in detail are well-known to those skilled in the art.

Claims

1. A welding device for a bulldozer bucket, comprising a rear fixing plate, wherein a left sliding rod fixing seat and a right sliding rod fixing seat are spaced apart on the front side of the rear fixing plate, characterized in that: The left and right sliding rod fixing seats are spaced apart by parallel upper and lower sliding rods. Multiple sets of equally spaced welding gun fixing frames are slidably mounted on the upper and lower sliding rods. Each set of welding gun fixing frames has a welding gun mounted on its bottom end via a welding gun connecting seat. A telescopic frame for linkage between the multiple sets of welding gun fixing frames is provided. A drive connecting seat is installed on the top of the two sets of welding gun fixing frames at the edge. The rear fixing plate is provided with a fixing frame spacing fine adjustment mechanism that drives the drive connecting seat to move along the length direction of the upper sliding rod.

2. The welding device for a bulldozer bucket according to claim 1, characterized in that, The telescopic frame includes multiple sets of X-shaped structures arranged in a linear fashion. The ends of two adjacent sets of X-shaped structures are rotatably connected to each other to form a parallelogram. The central fork of the X-shaped structure is hinged to the middle of the side wall of the welding gun fixing frame.

3. The welding device for a bulldozer bucket according to claim 1 or 2, characterized in that, The welding torch holder is provided in five sets at equal intervals.

4. The welding device for a bulldozer bucket according to claim 3, characterized in that, The welding torch holder has a rectangular cross-section and is provided with a first through hole for the upper sliding rod to pass through and a second through hole for the lower sliding rod to pass through.

5. The welding device for a bulldozer bucket according to claim 4, characterized in that, The number of fixed frame spacing fine-tuning mechanisms is the same as the number of drive connecting seats. The two sets of drive connecting seats are adjusted by the corresponding fixed frame spacing fine-tuning mechanisms. Each fixed frame spacing fine-tuning mechanism includes a third screw. One end of the third screw is fixed to the surface of the rear fixed plate through a screw fixing seat A, and the other end of the third screw is fixed to the surface of the rear fixed plate through a screw fixing seat B. The third screw passes through the drive connecting seat. Locking nuts A and B are threaded onto the third screws on both sides of the drive connecting seat, respectively, clamping the upper part of the drive connecting seat between the locking nuts A and B.

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