A positioning device for welding the support plate of the power distribution box of a stacker truck

Abstract

This utility model relates to a positioning device for welding the support plate of a stacker truck's electrical distribution box. It solves the technical problem of existing devices being unable to achieve precise and synchronous spatial positioning of multiple components. The device includes an operating platform with a positioning surface at its upper end. A support positioning frame for placing the support plate is located at the upper end of the positioning platform. A support plate positioning assembly is located at the upper end of the positioning platform. A fixing seat positioning assembly for installing pedal fixing seats is located on the side of the upper end of the positioning platform away from the support positioning frame. A flat iron positioning assembly for installing fixing flat iron is located on the side of the upper end of the positioning platform near the fixing seat positioning assembly. The advantages are: this device integrates the positioning and clamping functions for four parts—the support plate, two pedal fixing seats, and fixing flat iron—achieving the assembly and positioning of complex components in a single process, reducing the turnover of workpieces between different workstations.

Description

Technical Field

[0001] This utility model belongs to the technical field of welding positioning equipment, specifically relating to a positioning device for welding the support plate of the power distribution box of a stacker truck. Background Technology

[0002] Distribution boxes typically consist of a support plate as their main structure, requiring the welding of various components onto this plate. The precision of the welding positions directly affects the overall assembly quality and structural strength of the distribution box. Traditional welding methods often rely on manual positioning and welding. This approach not only demands highly experienced and skilled workers but is also cumbersome and inefficient. Furthermore, manual positioning and welding struggles to guarantee the positioning accuracy of the support plate, leading to significant human-induced variations in welding quality and poor product consistency and stability. Existing support plate positioning devices are relatively limited in function, often only capable of positioning the support plate or individual components, failing to achieve precise and synchronized spatial positioning of multiple components. Summary of the Invention

[0003] The purpose of this utility model is to address the above-mentioned problems by providing a positioning device for welding the support plate of the stacker truck's electrical distribution box.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a positioning device for welding the support plate of a stacker truck electrical distribution box, comprising an operating table, a positioning surface at the upper end of the operating table, a support positioning frame for placing the support plate at the upper end of the positioning surface, a support plate positioning component at the upper end of the positioning surface that can press one end of the support plate against the support positioning frame, a fixing seat positioning component for installing a pedal fixing seat and positioning the pedal fixing seat against one side of the support plate at the upper end of the positioning table away from the support positioning frame, and a flat iron positioning component for installing a fixing flat iron and positioning the fixing flat iron against the upper end of the support plate at the upper end of the positioning table near the fixing seat positioning component.

[0005] In the aforementioned positioning device for welding the support plate of a stacker truck electrical box, the number of fixed seat positioning components is two sets, symmetrically arranged at both ends of the upper part of the positioning platform away from the supporting positioning frame, and the flat iron positioning component is positioned between the two fixed seat positioning components. The two sets of symmetrically arranged fixed seat positioning components ensure uniform force distribution on the pedal fixing seat during welding, avoiding workpiece displacement or welding deformation that may result from unilateral clamping, thus greatly improving welding quality. Simultaneously, the flat iron positioning component being located between the two fixed seat positioning components represents an optimized spatial layout, avoiding interference between components and clearly defining the relative positional relationship between the flat iron and the two pedal fixing seats, ensuring the overall dimensional accuracy of the final welded part.

[0006] In the aforementioned positioning device for welding the support plate of a stacker truck electrical distribution box, the supporting positioning frame includes side support groups located on one side along the length direction and another side along the width direction at the upper end of the operating platform. Several bottom support blocks are provided on the other side of the upper end of the positioning platform along the length direction. A positioning space for placing the support plate is formed between the side support groups and the bottom support blocks. By restricting two adjacent sides of the support plate through the side support groups and supporting it from below through the several bottom support blocks, a stable positioning space is formed, providing a preliminary, but very accurate and reliable reference position for the support plate.

[0007] In the aforementioned positioning device for welding the support plate of the stacker truck electrical box, the side support group has several transverse support blocks and several longitudinal support blocks. The transverse support blocks are arranged sequentially along the length direction of the positioning platform, and the longitudinal support blocks are arranged sequentially along the width direction of the positioning platform.

[0008] In the above-mentioned positioning device for welding the support plate of the stacker truck electrical box, the fixed seat positioning assembly includes fixed seat positioning clamps respectively set at both ends on the upper part of the positioning platform and away from the supporting positioning frame. The lower end of the fixed seat positioning clamp is provided with a first mounting block, the upper end of the first mounting block is provided with a first clamp driving part, and the end of the first clamp driving part near the support plate is provided with a fixed seat mounting part.

[0009] In the aforementioned positioning device for welding the support plate of a stacker truck's electrical distribution box, the mounting part of the fixed seat has a mounting groove on the side near the support plate. A mounting post is provided at the upper end of the mounting groove, and the pedal fixing seat is disposed within the mounting groove. Furthermore, the upper inner side of the pedal fixing seat has mounting holes corresponding to the mounting post. The precise fit between the mounting groove, the mounting post, and the pedal fixing seat enables rapid and accurate positioning, fundamentally eliminating errors that may occur during manual alignment and ensuring the consistency of the two pedal fixing seats relative to the support plate. This is crucial to the overall welding quality.

[0010] In the aforementioned positioning device for welding the support plate of a stacker truck electrical distribution box, the first clamp driving unit has a first driving base connected to a first mounting block. The first driving base has a first guide portion near the support plate end, and a first driving rod is movably mounted inside the first guide portion. A first handle rod is movably mounted at the end of the first driving base away from the first guide portion. The first handle rod is connected to the first driving rod via several first connecting pieces and enables the first driving rod to move axially along the support plate direction. The end of the first driving rod away from the first handle rod is connected to a fixed base mounting portion. By moving the first handle rod, the first driving rod is driven to move linearly within the first guide portion via the first connecting pieces. The first guide portion ensures that the first driving rod can only move axially, avoiding wobbling and further improving positioning accuracy. Simultaneously, the structure is simple and durable, with a low mechanical failure rate and long service life.

[0011] In the aforementioned positioning device for welding the support plate of a stacker truck electrical distribution box, the support plate has a clamping groove on the side near the fixed seat positioning assembly, and one end of the clamping groove has an opening. The flat iron positioning assembly includes a flat iron positioning clamp disposed at the end of the clamping groove near the opening, and a flat iron mounting plate movably mounted on the upper end of the flat iron positioning clamp, which can rotate circumferentially upwards toward the support plate. When placing the fixed flat iron, the welding worker can flip up the flat iron mounting plate to obtain a wide operating field of vision and ample operating space.

[0012] In the aforementioned positioning device for welding the support plate of a stacker truck's electrical distribution box, the lower end of the flat iron positioning clamp has a vertical plate fixed to the positioning platform. The end of the flat iron mounting plate near the vertical plate is connected to the vertical plate via a hinge. The inner side of the end of the flat iron mounting plate away from the vertical plate has a flat iron mounting groove, and the fixed flat iron is disposed within the flat iron mounting groove. The hinged connection between the vertical plate and the flat iron mounting plate, and the flat iron mounting groove for installing and fixing the flat iron, achieves a balance between stable support and flexible movement.

[0013] In the aforementioned positioning device for welding the support plate of a stacker truck electrical distribution box, the support plate positioning assembly includes a support plate positioning clamp disposed at the end of the top clamping groove away from the opening and arranged laterally. The lower end of the support plate positioning clamp is provided with a second mounting block, and the upper end of the second mounting block is provided with a second clamp driving part. The second clamp driving part has a second driving base connected to the second mounting block. One end of the second driving base has a second guide part, and a second driving rod is movably disposed inside the second guide part. A second handle rod is movably disposed at the end of the second driving base away from the second guide part. The second handle rod is connected to the second driving rod through several second connecting pieces and can make the second driving rod move axially along the support plate direction. The end of the second driving rod away from the second handle rod is provided with an adjustable top clamping end that contacts the support plate. A controllable clamping force is applied to the support plate from one direction, so that its reference surface is in complete contact with the support block. At the same time, the structure of its second clamping drive part is highly consistent with that of the first clamping drive part, which brings the advantage of unified operation, reduces the training and learning cost of operators, and the adjustable clamping end can finely adjust the clamping position or pre-tightening force, improving adaptability.

[0014] Compared with existing technologies, the advantages of this utility model are: 1. This device integrates the positioning and clamping functions of four parts: support plate, two pedal fixing seats and fixed flat iron. It realizes the assembly and positioning of complex components in a single process and reduces the turnover of workpieces between different workstations.

[0015] 2. This device achieves rapid positioning of the support plate through the cooperation of the support positioning frame and the support plate positioning assembly. The side support group and bottom support block of the support positioning frame constitute the main positioning reference surface, while the support plate positioning assembly provides precise clamping force, ensuring the uniqueness and accuracy of the support plate's own position.

[0016] 3. The support plate positioning assembly and the fixed seat positioning assembly of the device are both driven by manual levers. By simply pressing down or pulling the handle, a firm clamping and loosening can be completed. The action is quick and greatly shortens the clamping time of a single workpiece, making the welding process more standardized and procedural. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a structural schematic diagram of the support and positioning frame in this utility model.

[0019] Figure 3 This is a structural schematic diagram of the support plate positioning assembly in this utility model.

[0020] Figure 4This is a structural schematic diagram of the fixed base positioning component in this utility model.

[0021] Figure 5 This is a schematic diagram of the flat iron positioning component in this utility model.

[0022] Figure 6 This is a schematic diagram of the support plate in this utility model.

[0023] In the diagram: 1. Operating console; 11. Positioning platform; 12. Support plate; 13. Pedal fixing seat; 14. Fixing flat iron; 15. Tightening groove; 16. Opening; 2. Supporting positioning frame; 21. Side support assembly; 22. Bottom support block; 23. Lateral support block; 24. Longitudinal support block; 3. Support plate positioning assembly; 31. Support plate positioning clamp; 32. Second mounting block; 33. Second clamp drive unit; 34. Second drive base; 35. Second guide unit; 36. Second drive rod; 37. Second handle rod; 38. Second connection. 38. Connecting piece, 39. Adjustable clamping end, 4. Fixed seat positioning assembly, 41. Fixed seat positioning clamp, 42. First mounting block, 43. Fixed seat mounting part, 44. Fixed seat mounting groove, 45. Mounting post, 46. Mounting hole, 5. Flat iron positioning assembly, 51. Flat iron positioning clamp, 52. Flat iron mounting plate, 53. Vertical plate, 54. Flat iron mounting groove, 6. First clamp driving part, 61. First driving base, 62. First guide part, 63. First driving rod, 64. First handle rod, 65. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0025] like Figure 1-6 As shown, a positioning device for welding a support plate of a stacker truck electrical distribution box includes an operating table 1. The upper end of the operating table 1 is provided with a positioning platform 11. The upper end of the positioning platform 11 is provided with a support positioning frame 2 for placing a support plate 12. The upper end of the positioning platform 11 is provided with a support plate positioning assembly 3 that can press one end of the support plate 12 against the support positioning frame 2. The upper end of the positioning platform 11 away from the support positioning frame 2 is provided with a fixing seat positioning assembly 4 for installing a pedal fixing seat 13 and for positioning the pedal fixing seat 13 against one side of the support plate 12. The upper end of the positioning platform 11 near the fixing seat positioning assembly 4 is provided with a flat iron positioning assembly 5 for installing a fixing flat iron 14 and for positioning the fixing flat iron 14 against the upper side of the support plate 12.

[0026] like Figure 1As shown, there are two sets of fixed seat positioning components 4, symmetrically arranged at both ends of the upper part of the positioning platform 11 away from the supporting positioning frame 2, and the flat iron positioning component 5 is arranged between the two fixed seat positioning components 4. The two sets of fixed seat positioning components 4 and their symmetrical arrangement ensure that the pedal fixing seat 13 is subjected to uniform force during welding, avoiding workpiece displacement or welding deformation that may be caused by clamping on one side, and greatly improving the welding quality. At the same time, the flat iron positioning component 5 is located between the two fixed seat positioning components 4, which is an optimized spatial layout. It avoids interference between components and clarifies the relative positional relationship between the flat iron and the two pedal fixing seats, ensuring the overall dimensional accuracy of the final welded part.

[0027] like Figure 2 As shown, the support and positioning frame 2 includes a side support group 21 located on one side along the length direction and another side along the width direction at the upper end of the operating table 11. A plurality of bottom support blocks 22 are provided on the other side of the upper end of the positioning table 11 along the length direction. A positioning space for placing the support plate 12 is formed between the side support group 21 and the bottom support blocks 22. The side support group 21 restricts two adjacent sides of the support plate 12, and the bottom support blocks 22 support it from below, together forming a stable positioning space, providing a preliminary, but very precise and reliable reference position for the support plate 12.

[0028] The side support group 21 has several transverse support blocks 23 and several longitudinal support blocks 24. The transverse support blocks 23 are arranged sequentially along the length of the positioning platform 11, and the longitudinal support blocks 24 are arranged sequentially along the width of the positioning platform 11.

[0029] Combination Figure 1 , Figure 4 and Figure 6 As shown, the fixed seat positioning assembly 4 includes fixed seat positioning clamps 41 respectively disposed at both ends of the upper end of the positioning platform 11 and away from the side of the supporting positioning frame 2. The lower end of the fixed seat positioning clamp 41 is provided with a first mounting block 42, the upper end of the first mounting block 42 is provided with a first clamp driving part 6, and the end of the first clamp driving part 6 near the support plate 12 is provided with a fixed seat mounting part 43.

[0030] The mounting portion 43 has a mounting groove 44 on the side near the support plate 12. A mounting post 45 is provided at the upper end of the mounting groove 44. The pedal mounting seat 13 is disposed within the mounting groove 44, and a mounting hole 46 corresponding to the mounting post 45 is provided on the inner side of the upper end of the pedal mounting seat 13. The precise fit between the mounting groove 44, the mounting post 45, and the pedal mounting seat 13 enables rapid and accurate positioning, fundamentally eliminating errors that may occur during manual alignment. This ensures the consistency of the positions of the two pedal mounting seats 13 relative to the support plate 12, which is crucial to the overall welding quality.

[0031] Specifically, the first clamping drive unit 6 has a first drive base 61 connected to the first mounting block 42. The first drive base 61 has a first guide portion 62 at the end near the support plate 12. A first drive rod 63 is movably mounted inside the first guide portion 62. A first handle rod 64 is movably mounted at the end of the first drive base 61 away from the first guide portion 62. The first handle rod 64 is connected to the first drive rod 63 via several first connecting pieces 65 and enables the first drive rod 63 to move axially along the support plate 12. The end of the first drive rod 63 away from the first handle rod 64 is connected to the fixed base mounting part 43. By moving the first handle rod 64, the first drive rod 63 is driven to move linearly within the first guide portion 62 via the first connecting pieces 65. The first guide portion 62 ensures that the first drive rod 63 can only move axially, avoiding wobbling and further improving positioning accuracy. Simultaneously, the structure is simple and durable, with a low mechanical failure rate and long service life.

[0032] Combination Figure 1 , Figure 5 and Figure 6 As shown, the support plate 12 has a clamping groove 15 on the side near the fixed base positioning assembly 4, and one end of the clamping groove 15 has an opening 16. The flat iron positioning assembly 5 includes a flat iron positioning clamp 51 disposed at the end of the clamping groove 15 near the opening 16. The upper end of the flat iron positioning clamp 51 is movably provided with a flat iron mounting plate 52 that can rotate circumferentially upwards toward the support plate 12. When placing the fixed flat iron 14, the welding worker can flip up the flat iron mounting plate 52 to obtain a wide operating field of vision and ample operating space.

[0033] The flat iron positioning clamp 51 has a vertical plate 53 fixed to the positioning platform 11 at its lower end. The flat iron mounting plate 52 is connected to the vertical plate 53 by a hinge at one end. The flat iron mounting plate 52 has a flat iron mounting groove 54 on its inner side at the end away from the vertical plate 53, and the fixed flat iron 14 is set in the flat iron mounting groove 54. The vertical plate 53 and the flat iron mounting plate 52 are hinged together, and the flat iron mounting groove 54 is used to install and fix the flat iron 14, thus achieving a combination of stable support and flexible movement.

[0034] Combination Figure 1 and Figure 3As shown, the support plate positioning assembly 3 includes a support plate positioning clamp 31 disposed at the end of the tightening groove 15 away from the opening 16 and arranged laterally. The lower end of the support plate positioning clamp 31 is provided with a second mounting block 32, and the upper end of the second mounting block 32 is provided with a second clamp driving part 33. The second clamp driving part 33 has a second driving base 34 connected to the second mounting block 32. One end of the second driving base 34 has a second guide part 35. A second driving rod 36 is movably disposed inside the second guide part 35. A second handle rod 37 is movably disposed at the end of the second driving base 34 away from the second guide part 35. The second handle rod 37 is connected to the second driving rod 36 through several second connecting pieces 38 and can make the second driving rod 36 move axially along the direction of the support plate 12. The end of the second driving rod 36 away from the second handle rod 37 is provided with an adjustable tightening end 39 that contacts the support plate 12. A controllable clamping force is applied to the support plate 12 from one direction, so that its reference surface is in complete contact with the support block. At the same time, the structure of its second clamping drive part 33 is highly consistent with that of the first clamping drive part 6, which brings the advantage of unified operation, reduces the training and learning cost of operators, and the adjustable clamping end 39 can finely adjust the clamping position or pre-tightening force, improving adaptability.

[0035] The principle of this embodiment is as follows: The support plate 12 is placed in the positioning space of the support positioning frame 2. The two adjacent sides of the support plate 12 will naturally abut against the side support group 21, while the bottom is supported by the bottom support block 22, completing the initial and quick positioning of the support plate 12. The operator turns the second handle rod 37 of the support plate positioning assembly 3. Through the lever principle, the second handle rod 37 drives the second connecting piece 38, which in turn pushes the second drive rod 36 to move forward in a straight line in the second guide part 35. Finally, the adjustable clamping end 39 installed at the front end of the second drive rod 36 will firmly press against the support plate 12. This action eliminates all gaps between the support plate 12 and the support positioning frame 2, and fixes the support plate 12 accurately and firmly in the working reference position of the entire device. The two pedal fixing seats 13 are respectively placed into the fixing seat mounting slots 44 of the fixing seat mounting parts 43 on both sides, and the mounting holes 46 on the pedal fixing seats 13 are fitted onto the mounting posts 45. The operator turns the first handle rod 64 of the first clamp drive part 6. Similar to the above principle, the first handle rod... 64 drives the first drive rod 63 to move forward in a straight line via the first connecting piece 65, thereby pushing the entire fixed seat mounting part 43 to move towards the side of the support plate 12. Finally, the pedal fixing seat 13 is precisely abutted against and pressed against the designated side of the support plate 12, ready for welding. The flat iron mounting plate 52 is rotated upward to obtain a spacious operating space. Then, the fixed flat iron 14 is placed into the flat iron mounting slot 54. The operator rotates the flat iron mounting plate 52 with the fixed flat iron 14 downward to make it flat on the support plate. On the upper surface of 12, the fixed flat iron 14 is precisely fixed in position under the positioning of the flat iron mounting groove 54 and naturally abuts against the upper side of the support plate 12; then the pedal fixing seat 13 and the fixed flat iron 14 are connected to the support plate 12 by welding; after welding, the handle rods of the fixing seat positioning assembly 4 and the support plate positioning assembly 5 are released to allow the clamp to retract, and then the flat iron mounting plate 52 is rotated upward to release the limitation on the fixed flat iron 14. Finally, the support plate 12, which is welded together, is removed from the support positioning frame 2.

[0036] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0037] Although this article extensively uses the following components: operating table 1, positioning table 11, support plate 12, pedal fixing seat 13, fixing flat iron 14, tightening groove 15, opening 16, supporting positioning frame 2, side support assembly 21, bottom support block 22, transverse support block 23, longitudinal support block 24, support plate positioning assembly 3, support plate positioning clamp 31, second mounting block 32, second clamp driving part 33, second driving base 34, second guide part 35, second driving rod 36, second handle rod 37, second connecting piece 38, etc. The terms used include: adjusting and tightening end head 39, fixed seat positioning assembly 4, fixed seat positioning clamp 41, first mounting block 42, fixed seat mounting part 43, fixed seat mounting groove 44, mounting post 45, mounting hole 46, flat iron positioning assembly 5, flat iron positioning clamp 51, flat iron mounting plate 52, vertical plate 53, flat iron mounting groove 54, first clamp driving part 6, first driving base 61, first guide part 62, first driving rod 63, first handle rod 64, first connecting piece 65, etc., but the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A positioning device for welding the support plate of a stacker truck electrical distribution box, comprising an operating table (1), wherein the upper end of the operating table (1) is provided with a positioning surface (11), characterized in that, The upper end of the positioning platform (11) is provided with a support positioning frame (2) for placing the support plate (12). The upper end of the positioning platform (11) is provided with a support plate positioning assembly (3) that can press one end of the support plate (12) against the support positioning frame (2). The upper end of the positioning platform (11) away from the support positioning frame (2) is provided with a fixing seat positioning assembly (4) for installing a pedal fixing seat (13) and for positioning the pedal fixing seat (13) against the side of the support plate (12). The upper end of the positioning platform (11) near the fixing seat positioning assembly (4) is provided with a flat iron positioning assembly (5) for installing a fixed flat iron (14) and for positioning the fixed flat iron (14) against the upper side of the support plate (12).

2. The positioning device for welding the support plate of the stacker truck's electrical distribution box according to claim 1, characterized in that, The fixed seat positioning components (4) are in two sets and are symmetrically arranged at both ends of the upper end of the positioning platform (11) away from the supporting positioning frame (2), and the flat iron positioning component (5) is arranged between the two fixed seat positioning components (4).

3. The positioning device for welding the support plate of the stacker truck's electrical distribution box according to claim 1, characterized in that, The support and positioning frame (2) includes a side support group (21) set on the upper end of the operating table (1) along one side along the length direction and one side along the width direction. The upper end of the positioning table (11) is provided with a plurality of bottom support blocks (22) along the other side along the length direction. The side support group (21) and the bottom support blocks (22) form a positioning space for placing the support plate (12).

4. The positioning device for welding the support plate of the stacker truck electrical distribution box according to claim 3, characterized in that, The side support group (21) has several transverse support blocks (23) and several longitudinal support blocks (24). The transverse support blocks (23) are arranged sequentially along the length direction of the positioning platform (11), and the longitudinal support blocks (24) are arranged sequentially along the width direction of the positioning platform (11).

5. A positioning device for welding the support plate of a stacker truck electrical distribution box according to claim 1, 2, 3, or 4, characterized in that, The fixed seat positioning assembly (4) includes fixed seat positioning clamps (41) respectively disposed at the upper end of the positioning platform (11) and at both ends of the side away from the supporting positioning frame (2). The lower end of the fixed seat positioning clamp (41) is provided with a first mounting block (42), the upper end of the first mounting block (42) is provided with a first clamp driving part (6), and the first clamp driving part (6) is provided with a fixed seat mounting part (43) at the end near the support plate (12).

6. The positioning device for welding the support plate of the stacker truck's electrical distribution box according to claim 5, characterized in that, The fixed seat mounting part (43) has a fixed seat mounting groove (44) on the side near the support plate (12). The fixed seat mounting groove (44) has a mounting post (45) at the upper end. The pedal fixing seat (13) is set in the fixed seat mounting groove (44), and the upper inner side of the pedal fixing seat (13) has a mounting hole (46) corresponding to the mounting post (45).

7. The positioning device for welding the support plate of the stacker truck electrical distribution box according to claim 5, characterized in that, The first clamp driving part (6) has a first driving base (61) connected to the first mounting block (42). The first driving base (61) has a first guide part (62) at one end near the support plate (12). A first driving rod (63) is movably provided inside the first guide part (62). A first handle rod (64) is movably provided at one end of the first driving base (61) away from the first guide part (62). The first handle rod (64) is connected to the first driving rod (63) through several first connecting pieces (65) and can make the first driving rod (63) move axially along the support plate (12). The end of the first driving rod (63) away from the first handle rod (64) is connected to the fixed seat mounting part (43).

8. A positioning device for welding the support plate of a stacker truck electrical distribution box according to claim 1, 2, 3, or 4, characterized in that, The support plate (12) has a tightening groove (15) on the side near the fixed seat positioning assembly (4), and one end of the tightening groove (15) has an opening (16). The flat iron positioning assembly (5) includes a flat iron positioning clamp (51) disposed on the end of the tightening groove (15) near the opening (16). The upper end of the flat iron positioning clamp (51) is movably provided with a flat iron mounting plate (52) that can rotate circumferentially above the support plate (12).

9. The positioning device for welding the support plate of the stacker truck electrical distribution box according to claim 8, characterized in that, The flat iron positioning clamp (51) has a vertical plate (53) fixed to the positioning table (11) at its lower end. The flat iron mounting plate (52) is connected to the vertical plate (53) by a hinge at one end. The flat iron mounting plate (52) has a flat iron mounting groove (54) on the inner side of the end away from the vertical plate (53), and the fixed flat iron (14) is set in the flat iron mounting groove (54).

10. A positioning device for welding the support plate of a stacker truck electrical distribution box according to claim 8, characterized in that, The support plate positioning assembly (3) includes a support plate positioning clamp (31) disposed at the end of the clamping groove (15) away from the opening (16) and arranged laterally. The lower end of the support plate positioning clamp (31) is provided with a second mounting block (32), and the upper end of the second mounting block (32) is provided with a second clamp driving part (33). The second clamp driving part (33) has a second driving base (34) connected to the second mounting block (32). One end of the second driving base (34) has a second guide part (35). The second guide part (35) is movably provided with a second drive rod (36) inside. The second drive base (34) is movably provided with a second handle rod (37) at one end away from the second guide part (35). The second handle rod (37) is connected to the second drive rod (36) through several second connecting pieces (38) and can make the second drive rod (36) move axially along the direction of the support plate (12). The second drive rod (36) is provided with an adjustable clamping end (39) that contacts the support plate (12) at one end away from the second handle rod (37).

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