A compatible welding tooling is positioned by a pin passing through a process hole of a bucket side plate

Abstract

The utility model provides a kind of compatible type welding tool of utilizing shovel side plate process hole to wear pin positioning, including tool head frame, tool tail frame, first mounting plate, second mounting plate, accompanying pin, first limiting component, second limiting component;Oppositely arranged tool head frame and tool tail frame are installed on positioner, shovel welding piece is placed between the two;Accompanying pin is relatively symmetrically set on the shovel side plate of two sides;First mounting plate is installed on tool head frame, and first limiting component is installed on first mounting plate;Second mounting plate is installed on tool tail frame, and second limiting component is installed on second mounting plate;Shovel welding piece is fixed on first, second mounting plate by the cooperation of first, second limiting component and accompanying pin;The utility model can accurately position shovel, and can prevent shovel from moving in the process of welding, can guarantee the through welding tool compatibility of different size shovels, effectively improve the application range of welding tool.

Description

Technical Field

[0001] This utility model relates to a compatible welding fixture that uses a pin for positioning through a process hole in the side plate of a bucket, and belongs to the field of bucket welding technology. Background Technology

[0002] The bucket is an important component of a loader. Loaders mainly operate using the bucket. The bucket is mainly composed of bucket wall plates, bucket side plates, blades, bucket bottom guard plates, and multiple side plates welded together. During welding, the assembled bucket needs to be placed on the welding fixture to position the process holes of the bucket side plates, and then clamped for welding.

[0003] The existing tooling has low reliability in longitudinal clamping, low accuracy in bucket repeatability, and the bucket sliding during welding can easily generate welding porosity. The coupling center position is asymmetrical, and the clamping is not synchronized, resulting in excessive torque on the workpiece. Custom-made accompanying tooling based on the position of the tooth hole on the main cutter plate is heavy for large buckets, has poor interchangeability, and cannot be compatible with buckets of different sizes, resulting in a limited range of applications for welding tooling. Summary of the Invention

[0004] The purpose of this invention is to provide a compatible welding fixture that uses a pin for positioning through a process hole in the side plate of a bucket to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: This utility model provides a compatible welding fixture that utilizes a pin for positioning through a process hole in the bucket side plate, comprising: A tooling head frame and a tooling tail frame are installed on the positioner and arranged opposite to each other, with a bucket welded component placed between them. The bucket welded component includes a bucket wall plate and a bucket side plate. The first mounting plate is disposed on the side of the tooling head frame near the bucket side plate; The second mounting plate is located on the side of the tooling tailstock near the bucket side plate; The trailing pin is symmetrically set on the bucket side plates on both sides, and the trailing pin is detachably connected to the bucket side plates. The first limiting component is disposed on the top surface of the first mounting plate and cooperates with the follower pin to limit the movement of the bucket welded part along its length direction and along the direction perpendicular to the first mounting plate. The second limiting component is disposed on the top surface of the second mounting plate and cooperates with the following pin to limit the movement of the bucket welded part in a direction perpendicular to the second mounting plate; the second limiting component can move along the length direction of the bucket welded part and is used to install bucket welded parts of different models.

[0006] In some embodiments, the first limiting component includes: Limiting component a is disposed on the top surface of the first mounting plate near the tooling head frame, and limits the movement of the bucket welded parts along its length direction; Limiting component b is disposed on the top surface of the first mounting plate between the limiting component a and the bucket side plate, and limits the movement of the bucket welded parts in a direction perpendicular to the first mounting plate.

[0007] In some embodiments, the limiting component a includes: The support base is fixed to the top surface of the first mounting plate; A baffle is obliquely fixed to the support base and faces the trailing pin; The positioning block is fixed on the top surface of the first mounting plate between the support base and the limiting component b. When the follower pin falls with the bucket welded part, the ball head at the end of the follower pin first contacts the inclined baffle and then positions it, so that the top of the positioning block is engaged in the O-shaped groove at the end of the follower pin.

[0008] In some embodiments, the limiting component b includes: The U-shaped cylinder support is fixed on the top surface of the first mounting plate. The two side plates of the cylinder support are provided with coaxial shaft holes, and the bottom surface of the cylinder support cavity is provided with a V-shaped groove. The hydraulic cylinder includes a cylinder body fixed to one side plate of the hydraulic cylinder support and a spindle that can extend and retract within the cylinder body. The spindle is arranged coaxially with the shaft hole. When the follower pin falls with the welded bucket component, the middle area of ​​the follower pin falls into the V-groove of the hydraulic cylinder support, and the spindle extends out and passes through the shaft holes of the two side plates, pressing the follower pin tightly in the hydraulic cylinder support.

[0009] In some embodiments, two follow pins located on the same horizontal plane are provided on the bucket side plate near the first mounting plate, and two limiting components a and two limiting components b are symmetrically provided on the first mounting plate.

[0010] In some embodiments, the second limiting component includes: A bracket assembly and an adjustment component, wherein the bracket assembly is located above the second mounting plate via the adjustment component, and the position of the bracket assembly is changed by adjusting the adjustment component; The cylinder support with a U-shaped structure is fixed on the top surface of the bracket assembly. The two side plates of the cylinder support are provided with coaxial shaft holes, and the bottom surface of the cylinder support cavity is provided with a V-shaped groove. The hydraulic cylinder includes a cylinder body fixed to one side plate of the hydraulic cylinder support and a spindle that can extend and retract within the cylinder body. The spindle is arranged coaxially with the shaft hole. When the follower pin falls with the welded bucket component, the middle area of ​​the follower pin falls into the V-groove of the hydraulic cylinder support, and the spindle extends out and passes through the shaft holes of the two side plates, pressing the follower pin tightly in the hydraulic cylinder support.

[0011] In some embodiments, the adjustment component includes: Two guide rails and multiple sliders are provided. The two guide rails are symmetrically fixed on the top surface of the second mounting plate, and sliders are slidably connected to the two guide rails. The bracket assembly is fixed on the multiple sliders. A positioning adjustment plate is fixed on the top surface of the second mounting plate, parallel to the guide rail; the positioning adjustment plate is provided with a plurality of positioning screw holes spaced apart along its length, and the bracket assembly is provided with pin holes; The locating pin is screwed into the aligned pin hole and locating screw hole.

[0012] In some embodiments, two follow pins located on the same horizontal plane are provided on the bucket side plate near the second mounting plate, and a set of symmetrically arranged cylinder supports and cylinders are provided at each end of the bracket in the length direction.

[0013] In some embodiments, a process hole is provided on the side plate of the bucket, and one end of the follower pin in the length direction is provided with an external thread section and a flange structure located at the tail of the external thread section. The outer diameter of the flange structure is larger than the inner diameter of the process hole. The follower pin passes through the process hole and penetrates the side plate of the bucket. After tightening the nut, the follower pin is fixed on the side plate of the bucket. The other end of the follower pin in the length direction is provided with a ball head and a flange structure arranged at intervals, and an O-ring groove is formed between the two.

[0014] In some embodiments, both the tooling headstock and the tooling tailstock are provided with a guide hole for the passage of hydraulic oil pipes and a plurality of fixing holes circumferentially distributed around the guide hole. The fixing holes are used to secure the tooling headstock and tooling tailstock to the positioner via fasteners arranged circumferentially; and / or, Triangular reinforcing plates are fixed at the bottom connection points of the tooling head frame and the first mounting plate, as well as at the bottom connection points of the tooling tail frame and the second mounting plate.

[0015] The beneficial effects of this utility model are: This invention enables precise positioning of the bucket and prevents it from moving during welding. It ensures compatibility of welding fixtures for buckets of different sizes, effectively improving the applicability of welding fixtures. This welding fixture has a simple structure and is lightweight, which can increase the load capacity of the positioner and support heavier buckets. The welding fixture does not interfere with the weld, avoids the generation of welding porosity, and increases the weld completion rate by about 3-4%. Attached Figure Description

[0016] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0017] In the attached diagram: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 for Figure 1 A schematic diagram of the structure of part A; Figure 3 This is the front view of the present invention; Figure 4 for Figure 3 A structural diagram of section B; Figure 5 This is a top view of the present invention; Figure 6 This is a bottom view of the present invention; Figure 7 This is a side view of the present invention; Figure 8 for Figure 6 A structural diagram of part C.

[0018] In the diagram: 1. Tooling head frame; 2. Tooling tail frame; 3. Bucket wall panel; 4. First mounting plate; 5. Second mounting plate; 6. Adjustment assembly; 7. Support assembly; 8. Hydraulic cylinder support; 9. Hydraulic cylinder; 10. V-groove; 11. Following pin; 12. Bucket side plate; 13. Process hole; 14. Nut; 15. Limiting assembly a; 16. Flange structure; 17. O-ring groove; 18. Ball head; 19. Guide rail; 20. Slider; 21. Positioning adjustment plate; 22. Positioning screw hole; 23. Positioning pin; 24. Support seat; 25. Baffle; 26. Cylinder body; 27. Mandrel; 28. Guide hole; 29. ​​Fixing hole; 30. Positioning block; 31. Triangular reinforcing plate; 32. Shaft hole.

[0019] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0021] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] like Figures 1-8 As shown, this utility model provides a compatible welding fixture for positioning using a pin through a process hole in the bucket side plate. It includes a fixture headstock 1, a fixture tailstock 2, a first mounting plate 4, a second mounting plate 5, a following pin 11, a first limiting assembly, and a second limiting assembly. The fixture headstock 1 and fixture tailstock 2, arranged opposite to each other, are mounted on a positioner. A bucket welding component is placed between the fixture headstock 1 and fixture tailstock 2. The bucket welding component includes a bucket wall plate 3 and a bucket side plate 12. The first mounting plate 4 is disposed on the side of the fixture headstock 1 near the bucket side plate 12; the second mounting plate 5 is disposed on the side of the fixture tailstock 2 near the bucket side plate 12. The following pins 11 are symmetrically arranged on the bucket side plates 12 on both sides, and the following pins 11 are detachably connected to the bucket side plates 12; the first limiting component is arranged on the top surface of the first mounting plate 4, and cooperates with the following pins 11 to limit the movement of the bucket welded part along its length direction and along a direction perpendicular to the first mounting plate 4; the second limiting component is arranged on the top surface of the second mounting plate 5, and cooperates with the following pins 11 to limit the movement of the bucket welded part along a direction perpendicular to the second mounting plate 5; the second limiting component can move along the length direction of the bucket welded part and is used to install bucket welded parts of different models.

[0024] As can be seen from the above, the first and second limiting components work together to prevent the bucket from moving during the welding process, thereby improving the welding stability. The second limiting component can be flexibly adjusted according to the size of the bucket, thus ensuring the compatibility of welding fixtures with buckets of different sizes and effectively improving the applicability of the welding fixture. This welding fixture has a simple structure and is lightweight, which can increase the load capacity of the positioner and support heavier buckets. The welding fixture does not interfere with the weld, avoids the generation of welding porosity, and increases the weld completion rate by about 3-4%.

[0025] The following provides a further explanation of the specific structure of the first limiting component mentioned above.

[0026] like Figures 1-8 As shown, the first limiting component includes limiting component a15 and limiting component b; limiting component a15 is disposed on the top surface of the first mounting plate 4 near the tooling head frame 1, and limits the movement of the bucket welded part along its length direction; limiting component b is disposed on the top surface of the first mounting plate 4 between limiting component a15 and the bucket side plate 12, and limits the movement of the bucket welded part along a direction perpendicular to the first mounting plate 4.

[0027] Further options, such as Figure 3 , Figure 4 , Figure 5 As shown, the limiting component a15 includes a support base 24, a baffle 25, and a positioning block 30; the support base 24 is fixed on the top surface of the first mounting plate 4; the baffle 25 is inclinedly fixed on the support base 24 and faces the following pin 11; the positioning block 30 is fixed on the top surface of the first mounting plate 4 between the support base 24 and the limiting component b. When the following pin 11 falls with the bucket welded part, the ball head 18 at the end of the following pin 11 first contacts the inclined baffle 25 and then positions it, so that the top of the positioning block 30 is engaged in the O-shaped groove 17 at the end of the following pin 11.

[0028] As can be seen from the above, the inclined baffle 25 and the ball head 18 designed at the end of the trailing pin 11 cooperate with each other to accurately position the bucket. The positioning block 30 is located in the O-shaped groove 17 designed at the end of the trailing pin 11, which can further position and limit the trailing pin 11, effectively improving the accuracy and stability of the welding fixture positioning.

[0029] Further plans will continue to be considered. Figure 3 , Figure 4 , Figure 5As shown, the limiting component b includes a U-shaped cylinder support 8 and a cylinder 9. The cylinder support 8 is fixed to the top surface of the first mounting plate 4. Two side plates of the cylinder support 8 are provided with coaxially arranged shaft holes 32. The bottom surface of the cavity of the cylinder support 8 is provided with a V-groove 10. The cylinder 9 includes a cylinder body 26 fixed to any one side plate of the cylinder support 8 and a spindle 27 that can extend and retract in the cylinder body 26. The spindle 27 is coaxially arranged with the shaft hole 32. When the bucket welding part is lifted by the crane, the follower pin 11 falls with the bucket welding part. The middle area of ​​the follower pin 11 falls into the V-groove 10 of the cylinder support 8. The spindle 27 extends out and passes through the shaft holes 32 of the two side plates, pressing the follower pin 11 into the cylinder support 8.

[0030] As can be seen from the above, the hydraulic cylinder 9 drives the spindle 27 to move, causing the spindle 27 to move above the trailing pin 11. The spindle 27 and the V-groove plate 10 cooperate to press and fix the trailing pin 11, thereby securing the bucket side plate 12. The shaft hole 32 facilitates the insertion of one end of the spindle 27, thereby limiting the position of the spindle 27 and improving the pressing stability of the spindle 27 on the trailing pin 11.

[0031] Further options, such as Figure 5 As shown, two follow pins 11 located on the same horizontal plane are provided on the bucket side plate 12 near the first mounting plate 4, and two limiting components a15 and two limiting components b are symmetrically provided on the first mounting plate 4.

[0032] The following provides a further explanation of the specific structure of the second limiting component mentioned above.

[0033] like Figure 2 As shown, the second limiting assembly includes a bracket assembly 7, an adjustment component 6, a U-shaped cylinder support 8, and a cylinder 9. The bracket assembly 7 is located above the second mounting plate 5 via the adjustment component 6, and the position of the bracket assembly 7 can be changed by adjusting the adjustment component 6. The cylinder support 8 is fixed on the top surface of the bracket assembly 7. The two side plates of the cylinder support 8 are provided with coaxially arranged shaft holes 32, and the bottom surface of the cavity of the cylinder support 8 is provided with a V-groove 10. The cylinder 9 includes a cylinder body 26 fixed on any one side plate of the cylinder support 8 and a spindle 27 that can extend and retract in the cylinder body 26. The spindle 27 is coaxially arranged with the shaft hole 32. When the bucket welding part is lifted by the crane, the follower pin 11 falls with the bucket welding part. The middle area of ​​the follower pin 11 falls into the V-groove 10 of the cylinder support 8, and the spindle 27 extends and passes through the shaft holes 32 of the two side plates, pressing the follower pin 11 into the cylinder support 8.

[0034] As shown above, the hydraulic cylinder 9 drives the mandrel 27 to move, placing it above the traveling pin 11. The mandrel 27, in conjunction with the V-groove plate 10, clamps and secures the traveling pin 11, thus stably positioning the bucket side plate 12. The shaft hole 32 facilitates the insertion of one end of the mandrel 27, limiting its position and improving the clamping stability of the mandrel 27 on the traveling pin 11. The adjustment component 6 designed on the tooling tailstock 2 can be flexibly adjusted according to the size of the bucket, ensuring compatibility of welding tooling with buckets of different sizes and effectively improving the applicability of the welding tooling.

[0035] Further plans will continue to be considered. Figure 2 As shown, the adjustment assembly 6 includes two guide rails 19, multiple sliders 20, a positioning adjustment plate 21, and positioning pins 23. The two guide rails 19 are symmetrically fixed on the top surface of the second mounting plate 5, and the sliders 20 are slidably connected to the two guide rails 19. The bracket assembly 7 is fixed on the multiple sliders 20. The positioning adjustment plate 21 is fixed on the top surface of the second mounting plate 5 parallel to the guide rails 19. Multiple positioning screw holes 22 are spaced apart along the length of the positioning adjustment plate 21, and pin holes are provided on the bracket assembly 7. The positioning pins 23 are screwed into the aligned pin holes and positioning screw holes 22. In use, tighten the positioning pin 23 to disengage it from the positioning screw hole 22, thereby releasing the positioning pin 23 from limiting and fixing the bracket assembly 7. This allows the bracket assembly 7 to slide on the two guide rails 19, thus adjusting the position of the follower pin 11 on the tooling tailstock 2. This allows it to adapt to the positioning of buckets of different sizes. By tightening the positioning pin 23 into the corresponding positioning screw hole 22, the position of the bracket assembly 7 can be fixed, thus enabling stable positioning and limiting of the bucket wall plate 3 and the bucket side plate 12.

[0036] Further options, such as Figure 2 , Figure 5 As shown, two follow pins 11 located on the same horizontal plane are provided on the bucket side plate 12 near the second mounting plate 5, and a set of symmetrically arranged cylinder supports 8 and cylinders 9 are provided at each end of the support assembly 7 along the length direction.

[0037] The following provides a further explanation of the specific structure of the aforementioned accompanying sales.

[0038] like Figure 1 , Figure 2 , Figure 5 , Figure 8As shown, a process hole 13 is provided on the bucket side plate 12. One end of the follower pin 11 in the length direction is provided with an external thread section and a flange structure located at the tail of the external thread section. The outer diameter of the flange structure is larger than the inner diameter of the process hole 13. The follower pin 11 passes through the process hole 13 and penetrates the bucket side plate 12. After tightening the nut 14, the follower pin 11 is fixed on the bucket side plate 12. The other end of the follower pin 11 in the length direction is provided with ball heads 18 and flange structures 16 arranged at intervals, and an O-shaped groove 17 is formed between the two.

[0039] The following provides a further explanation of the specific structure of the aforementioned tooling headstock and tooling tailstock.

[0040] like Figure 1 , Figure 3 , Figure 4 , Figure 6 , Figure 7 As shown, both the tooling head frame 1 and the tooling tail frame 2 are provided with a guide hole 28 for easy passage of hydraulic oil pipes and multiple fixing holes 29 distributed circumferentially around the guide hole 28. The fixing holes 29 are used to fix the tooling head frame 1 and the tooling tail frame 2 to the positioner by fasteners arranged around the perimeter. The guide hole 28 and fixing holes 29 improve the convenience of fixing the tooling head frame 1 and the tooling tail frame 2 to the positioner. Triangular reinforcing plates 31 are fixed at the bottom connection between the tooling head frame 1 and the first mounting plate 4, and at the bottom connection between the tooling tail frame 2 and the second mounting plate 5. The triangular reinforcing plates 31 can reinforce the first mounting plate 4 and the second mounting plate 5, improving the structural stability of the welding tooling.

[0041] Working principle: Two bucket side plates 12 are assembled onto the bucket wall plate 3. Four following pins 11 are inserted into the process holes 13 of the two bucket side plates 12 and fixed with nuts 14. The bucket welded parts are hoisted by a crane and lowered between the tooling head frame 1 and tooling tail frame 2, which are already installed on the positioner. The position of the support assembly 7 is adjusted by adjusting component 6, so that the support assembly 7 moves closer to the bucket wall plate 3. The following pins 11 are placed in the V-groove 10. The following pins 11 are pressed by the interaction between the hydraulic cylinder 9 and the mandrel 27. The four following pins 11 can accurately position the two bucket side plates 12. The ball head 18 designed at the end of the following pin 11 and the inclined... The baffles 25 work together to precisely position the bucket and prevent it from shifting during welding. The hydraulic cylinder 9 and the mandrel 27 work together to press the follower pin 11 to achieve stable positioning of the bucket, thereby improving the welding stability of the welding operation. The adjustment component 6 designed on the tooling tailstock 2 can be flexibly adjusted according to the size of the bucket, thus ensuring the compatibility of welding tooling with different sized buckets and effectively improving the applicability of the welding tooling. This welding tooling has a simple structure and is lightweight, which can increase the load capacity of the positioner and support heavier buckets. The welding tooling does not interfere with the weld, avoids the generation of welding porosity, and improves the weld completion rate by about 3-4%.

[0042] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0043] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features found in other embodiments but not others, combinations of features from different embodiments are also within the scope of protection of this invention and form different embodiments. For example, in the embodiments described above, those skilled in the art can use them in combination based on known technical solutions and the technical problems to be solved by this application.

[0044] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A compatible welding fixture that utilizes a pin for positioning through a process hole in the bucket side plate, characterized in that, include: A tooling head frame and a tooling tail frame are installed on the positioner and arranged opposite to each other, with a bucket welded component placed between them. The bucket welded component includes a bucket wall plate and a bucket side plate. The first mounting plate is disposed on the side of the tooling head frame near the bucket side plate; The second mounting plate is located on the side of the tooling tailstock near the bucket side plate; The trailing pin is symmetrically set on the bucket side plates on both sides, and the trailing pin is detachably connected to the bucket side plates. The first limiting component is disposed on the top surface of the first mounting plate and cooperates with the follower pin to limit the movement of the bucket welded part along its length direction and along the direction perpendicular to the first mounting plate. The second limiting component is disposed on the top surface of the second mounting plate and cooperates with the following pin to limit the movement of the bucket welded part in a direction perpendicular to the second mounting plate; the second limiting component can move along the length direction of the bucket welded part and is used to install bucket welded parts of different models.

2. The compatible welding fixture for positioning using process holes in the bucket side plate according to claim 1, characterized in that, The first limiting component includes: Limiting component a is disposed on the top surface of the first mounting plate near the tooling head frame, and limits the movement of the bucket welded parts along its length direction; Limiting component b is disposed on the top surface of the first mounting plate between the limiting component a and the bucket side plate, and limits the movement of the bucket welded parts in a direction perpendicular to the first mounting plate.

3. A compatible welding fixture for positioning using a pin through a process hole in the bucket side plate according to claim 2, characterized in that, The limiting component a includes: The support base is fixed to the top surface of the first mounting plate; A baffle is obliquely fixed to the support base and faces the trailing pin; The positioning block is fixed on the top surface of the first mounting plate between the support base and the limiting component b. When the follower pin falls with the bucket welded part, the ball head at the end of the follower pin first contacts the inclined baffle and then positions it, so that the top of the positioning block is engaged in the O-shaped groove at the end of the follower pin.

4. A compatible welding fixture for positioning using a pin through a process hole in the bucket side plate according to claim 2, characterized in that, The limiting component b includes: The U-shaped cylinder support is fixed on the top surface of the first mounting plate. The two side plates of the cylinder support are provided with coaxial shaft holes, and the bottom surface of the cylinder support cavity is provided with a V-shaped groove. The hydraulic cylinder includes a cylinder body fixed to one side plate of the hydraulic cylinder support and a spindle that can extend and retract within the cylinder body. The spindle is arranged coaxially with the shaft hole. When the follower pin falls with the welded bucket component, the middle area of ​​the follower pin falls into the V-groove of the hydraulic cylinder support, and the spindle extends out and passes through the shaft holes of the two side plates, pressing the follower pin tightly in the hydraulic cylinder support.

5. A compatible welding fixture for positioning using a pin through a process hole in the bucket side plate according to claim 2, characterized in that: Two follow pins located on the same horizontal plane are provided on the side plate of the bucket near the first mounting plate. Two limiting components a and two limiting components b are symmetrically provided on the first mounting plate.

6. A compatible welding fixture for positioning using a pin through a process hole in the bucket side plate according to claim 1, characterized in that, The second limiting component includes: A bracket assembly and an adjustment component, wherein the bracket assembly is located above the second mounting plate via the adjustment component, and the position of the bracket assembly is changed by adjusting the adjustment component; The cylinder support with a U-shaped structure is fixed on the top surface of the bracket assembly. The two side plates of the cylinder support are provided with coaxial shaft holes, and the bottom surface of the cylinder support cavity is provided with a V-shaped groove. The hydraulic cylinder includes a cylinder body fixed to one side plate of the hydraulic cylinder support and a spindle that can extend and retract within the cylinder body. The spindle is arranged coaxially with the shaft hole. When the follower pin falls with the welded bucket component, the middle area of ​​the follower pin falls into the V-groove of the hydraulic cylinder support, and the spindle extends out and passes through the shaft holes of the two side plates, pressing the follower pin tightly in the hydraulic cylinder support.

7. A compatible welding fixture for positioning using a pin through a process hole in the bucket side plate according to claim 6, characterized in that, The adjustment component includes: Two guide rails and multiple sliders are provided. The two guide rails are symmetrically fixed on the top surface of the second mounting plate, and sliders are slidably connected to the two guide rails. The bracket assembly is fixed on the multiple sliders. A positioning adjustment plate is fixed on the top surface of the second mounting plate, parallel to the guide rail; the positioning adjustment plate is provided with a plurality of positioning screw holes spaced apart along its length, and the bracket assembly is provided with pin holes; The locating pin is screwed into the aligned pin hole and locating screw hole.

8. A compatible welding fixture for positioning using a pin through a process hole in the bucket side plate according to claim 6, characterized in that: Two follow pins located on the same horizontal plane are provided on the side plate of the bucket near the second mounting plate. Each end of the bracket assembly is provided with a set of symmetrically arranged cylinder supports and cylinders.

9. A compatible welding fixture for positioning using a pin through a process hole in the bucket side plate according to claim 1, characterized in that: The bucket side plate is provided with a process hole. One end of the follower pin in the length direction is provided with an external thread section and a flange structure located at the tail of the external thread section. The outer diameter of the flange structure is larger than the inner diameter of the process hole. The follower pin passes through the process hole and penetrates the bucket side plate. After tightening the nut, the follower pin is fixed on the bucket side plate. The other end of the trailing pin along its length is provided with spaced ball heads and flange structures, forming an O-shaped groove between them.

10. A compatible welding fixture for positioning using a pin through a process hole in the bucket side plate according to claim 1, characterized in that: Both the tooling headstock and the tooling tailstock are provided with a guide hole for the hydraulic oil pipe to pass through, and multiple fixing holes distributed circumferentially around the guide hole. The fixing holes are used to secure the tooling headstock and tooling tailstock to the positioner via fasteners arranged circumferentially; and / or, Triangular reinforcing plates are fixed at the bottom connection points of the tooling head frame and the first mounting plate, as well as at the bottom connection points of the tooling tail frame and the second mounting plate.

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