Forklift portal frame cross beam welding and assembling jig and forklift portal frame cross beam

Abstract

The utility model relates to a forklift portal frame crossbeam welding assembly jig and forklift portal frame crossbeam, including: fixed plate, first locating portion and second locating portion, first locating portion includes locating frame, first leaning grid, second leaning grid, first limit rod and second limit rod, locating frame is provided on the top of fixed plate, locating frame is provided on the top of fixed plate, second leaning grid is provided on the top of fixed plate, and second limit rod is provided on the top of fixed plate. The first leaning grid and the second leaning grid are arranged on the two sides of the positioning frame in the X-axis direction. The first limiting rod is arranged at the top of the fixing plate; the second limiting rod is arranged at the top of the positioning frame in the X-axis direction; the second positioning part comprises a third limiting rod, a first supporting leg, a second supporting leg and a third leaning grid, and the third limiting rod is arranged in the Y-axis direction; the first supporting leg and the second supporting leg are arranged on the fixing plate and arranged on the two sides of the positioning frame. A third leaning grid is arranged on the side, away from the positioning frame, of the first supporting leg. According to the positioning device, all parts of the forklift portal frame cross beam can be accurately positioned, working hours are saved, manpower and financial resources are saved, and the yield is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery assembly technology, and in particular to a welding assembly fixture for a forklift mast crossbeam and a forklift mast crossbeam. Background Technology

[0002] The forklift mast beam, as the core support structure of the forklift mast, directly bears the weight of the forks and goods, and is linked with the mast uprights, guide wheels and other components through connection points to ensure the stability of the forklift during lifting, tilting and driving.

[0003] The forklift mast crossbeam structure includes multiple components such as fork mounting seats, guide wheel mounting slots, and hydraulic cylinder lug seats. Each component is formed by welding multiple sub-parts. In the existing technology, welding the forklift mast crossbeam requires assembling one workpiece at a time while simultaneously welding another, along with measuring, marking, clamping, and fixing before welding can begin. This assembly process is inefficient and prone to errors. Furthermore, the marking process accumulates errors, resulting in a defective and unusable product even after assembly and welding are completed. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the defects of low welding efficiency and poor welding quality of forklift mast crossbeams in the prior art.

[0005] To solve the above-mentioned technical problems, this utility model provides a forklift mast crossbeam welding and assembly fixture, comprising:

[0006] Fixing plate;

[0007] The first positioning part includes a positioning frame, a first guide rail, a second guide rail, a first limiting rod, and a second limiting rod. The positioning frame is disposed on the top of the fixed plate, and the first guide rail and the second guide rail are disposed on both sides of the positioning frame along the X-axis direction. The first limiting rod is disposed on the top of the fixed plate and is disposed on one side of the positioning frame along the X-axis direction. The second limiting rod is disposed on the top of the positioning frame along the X-axis direction.

[0008] The second positioning part includes a third limiting rod, a first support leg, a second support leg, and a third guardrail. The third limiting rod is arranged along the Y-axis and passes through the positioning frame. The first support leg and the second support leg are arranged on the fixed plate, with the first support leg located on the side of the positioning frame away from the first limiting rod and the second support leg located on the side of the first limiting rod away from the positioning frame. The third guardrail is provided on the side of the first support leg away from the positioning frame.

[0009] In one embodiment of the present invention, a first support plate is provided at both ends of the first limiting rod, and a first groove is provided on the first support plate to cooperate with the first limiting rod.

[0010] In one embodiment of the present invention, the first and second guards are both disposed close to the positioning frame, and the top of the first and second guards are provided with slots.

[0011] In one embodiment of the present invention, a second support plate is provided on the side of the first grid away from the positioning frame, the second support plate is provided with a second groove that cooperates with the second limiting rod, and the top of the positioning frame is provided with a third groove corresponding to the position of the second groove.

[0012] In one embodiment of the present invention, the first support leg includes at least one pair of first support rods, and the pair of first support rods are symmetrically arranged on both sides of the third limiting rod.

[0013] In one embodiment of the present invention, the second leg includes at least a pair of second support rods, which are symmetrically arranged on both sides of the third limiting rod.

[0014] In one embodiment of this utility model, the positioning frame is provided with an installation port that cooperates with the third limiting rod, the two ends of the third limiting rod are provided with a third support plate, and the third support plate is provided with a fourth groove.

[0015] A forklift mast crossbeam, assembled using a welding assembly fixture, is characterized by comprising a first perforated plate, a second perforated plate, a third perforated plate, a fourth perforated plate, a first side plate, a second side plate, a third side plate, and an ear plate. The first and second perforated plates are parallel to the Y-axis, and the third and fourth perforated plates are parallel to the X-axis. The third perforated plate is located at one end of the first and second perforated plates, and the fourth perforated plate is located at the other end of the first and second perforated plates. Both the third and fourth perforated plates are perpendicular to the first and second perforated plates. The first and second side plates are both located on the side of the first perforated plate away from the second perforated plate. The first side plate is located on top of the second side plate and is perpendicular to the first perforated plate. The third side plate is located on the side of the third perforated plate away from the fourth perforated plate and is perpendicular to the third perforated plate. The ear plate is located on the side of the first perforated plate away from the second perforated plate and is parallel to the first perforated plate.

[0016] In one embodiment of this utility model, the first side plate is provided with an ear hole corresponding to the ear plate.

[0017] The first side plate is provided with a mounting groove that mates with the ear plate.

[0018] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:

[0019] This utility model discloses a welding and assembly fixture for a forklift mast crossbeam and the forklift mast crossbeam itself. The welding and assembly fixture of this utility model can be used for assembling the forklift mast crossbeam. After initial positioning via spot welding, full welding is performed. This utility model can precisely position the various components of the forklift mast crossbeam without the need for additional tooling and fixtures, enabling rapid assembly and welding without the need for measurement, marking, or labeling. This saves time, manpower, and financial resources, while also ensuring a high yield rate. Attached Figure Description

[0020] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the overall installation structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model;

[0023] Figure 3 for Figure 2 Partial structural diagram;

[0024] Figure 4 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model;

[0025] Explanation of reference numerals in the accompanying drawings: 1. Fixing plate; 2. First positioning part; 3. Second positioning part; 4. First hole plate; 5. Second hole plate; 6. Third hole plate; 7. Fourth hole plate; 8. First side plate; 9. Second side plate; 10. Ear plate; 11. Third side plate; 21. Positioning frame; 22. First back rail; 23. Second back rail; 24. First limiting rod; 25. Second limiting rod; 26. First support plate; 27. Second support plate; 28. Third support plate; 31. Third limiting rod; 32. First support leg; 33. Second support leg; 34. Third back rail; 41. Ear hole; 81. Mounting groove; 211. Third groove; 212. Mounting opening; 221. Slot; 261. First groove; 271. Second groove; 281. Fourth groove; 321. First support rod; 331. Second support rod. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0027] Example 1

[0028] Reference Figures 1-4 As shown, this utility model discloses a welding and assembly fixture for a forklift mast crossbeam, comprising:

[0029] Fixing plate 1;

[0030] The first positioning part 2 includes a positioning frame 21, a first guide rail 22, a second guide rail 23, a first limiting rod 24, and a second limiting rod 25. The positioning frame 21 is disposed on the top of the fixed plate 1. The first guide rail 22 and the second guide rail 23 are disposed on both sides of the positioning frame 21 along the X-axis direction. The first limiting rod 24 is disposed on the top of the fixed plate 1 and is disposed on one side of the positioning frame 21 along the X-axis direction. The second limiting rod 25 is disposed on the top of the positioning frame 21 along the X-axis direction.

[0031] The second positioning part 3 includes a third limiting rod 31, a first support leg 32, a second support leg 33, and a third guardrail 34. The third limiting rod 31 is arranged along the Y-axis and passes through the positioning frame 21. The first support leg 32 and the second support leg 33 are arranged on the fixing plate 1, and the first support leg 32 is arranged on the side of the positioning frame 21 away from the first limiting rod 24, and the second support leg 33 is arranged on the side of the first limiting rod 24 away from the positioning frame 21. The third guardrail 34 is arranged on the side of the first support leg 32 away from the positioning frame 21.

[0032] The welding assembly fixture of this utility model is applicable to the assembly of forklift mast crossbeams, wherein the first positioning part 2 is used for assembling components placed along the Y-axis direction. Specifically, the first perforated plate 4 and the second perforated plate 5 in the forklift mast crossbeam structure are placed along the Y-axis direction. In actual operation, the first perforated plate 4 and the second perforated plate 5 are pressed against both sides of the positioning frame 21 to limit the width between the first perforated plate 4 and the second perforated plate 5 in the X-axis direction; the bottom of the first perforated plate 4 and the second perforated plate 5 are respectively attached to the top of the first guardrail 22 and the second guardrail 23 to limit the height of the first perforated plate 4 and the second perforated plate 5 (Z-axis direction); the first limiting rod 24 is inserted into the holes on the surface of the first perforated plate 4 and the second perforated plate 5 to position the first perforated plate 4 and the second perforated plate 5 in the Y-axis direction; the second limiting rod 25 is used to position the ear plate 10, and the second limiting rod 25 is inserted between the ear plate 10 and the first perforated plate 4.

[0033] The second positioning part 3 is used for assembling parts placed along the X-axis. Specifically, the third hole plate 6 and the fourth hole plate 7 are arranged parallel to each other. The third hole plate 6 is close to one end of the first hole plate 4 and the second hole plate 5, and the fourth hole plate 7 is close to the other end of the first hole plate 4 and the second hole plate 5, so that the third hole plate 6 and the fourth hole plate 7 form a rectangular structure with the first hole plate 4 and the second hole plate 5. The third limiting rod 31 passes through the holes of the third hole plate 6 and the fourth hole plate 7 to position the third hole plate 6 and the fourth hole plate 7 in the Z-axis direction. The first support leg 32 and the second support leg 33 are used to limit the rotation of the third hole plate 6 and the second hole plate 5, respectively. The third guardrail 34 is used to fix the third side plate 11 so that the third side plate 11 is in close contact with the third hole plate 6. In addition, the second side plate 9 is positioned by the first guardrail 22, the first hole plate 4 and the third hole plate 6, and the first side plate 8 is positioned by the second side plate 9, the third hole plate 6, the first hole plate 4 and the fourth hole plate 7.

[0034] After assembling the aforementioned components with the welding fixture, initial positioning is achieved through spot welding, followed by full welding. This invention allows for precise positioning of each component of the forklift mast crossbeam without the need for additional tooling and fixtures. It enables rapid assembly and welding without the need for measurement, marking, or labeling. This saves time, manpower, and financial resources, while also ensuring a high yield rate.

[0035] Furthermore, the first limiting rod 24 is provided with a first support plate 26 at both ends, and the first support plate 26 is provided with a first groove 261 that cooperates with the first limiting rod 24.

[0036] Specifically, the two ends of the first limiting rod 24 are fixed by the first support plate 26 to ensure the height of the first limiting rod 24, while the first groove 261 is used to fix the first limiting rod 24 radially to prevent the first limiting rod 24 from rolling.

[0037] Similarly, a second support plate 27 is provided on the side of the first grid 22 away from the positioning frame 21. The second support plate 27 is provided with a second groove 271 that cooperates with the second limiting rod 25. The top of the positioning frame 21 is provided with a third groove 211 that corresponds to the position of the second groove 271.

[0038] Specifically, a hydraulic cylinder is installed between the ear plate 10 and the first perforated plate 4. During installation, the ear plate 10 is set perpendicular to the third perforated plate 6, with the ear plate 10 close to the third perforated plate 6. The distance between the ear plate 10 and the first perforated plate 4 is then limited by the mounting groove 81 on the first side plate 8. Finally, the second limiting rod 25 is inserted into the ear hole 41 of the ear plate 10 and the first side plate 8. The radial positioning of the first limiting rod 24 is achieved through the third groove 211 and the second groove 271.

[0039] Furthermore, the first guardrail 22 and the second guardrail 23 are both disposed close to the positioning frame 21, and the top of the first guardrail 22 and the second guardrail 23 are both provided with a slot 221.

[0040] Specifically, in actual operation, after the first perforated plate 4 is placed close to the positioning frame 21, the first perforated plate 4 is inserted into the slot 221 to position the first perforated plate 4 and ensure its stability.

[0041] Furthermore, in one embodiment of the present invention, the first support leg 32 includes at least a pair of first support rods 321, and the pair of first support rods 321 are symmetrically arranged on both sides of the third limiting rod 31.

[0042] Specifically, two first support rods 321 are symmetrically arranged on both sides of the third limiting rod 31, and the third perforated plate 6 is placed on top of the two first support rods 321 to support the third perforated plate 6 and prevent it from rotating. Similarly, the second support leg 33 includes at least one pair of second support rods 331, which are symmetrically arranged on both sides of the third limiting rod 31. The fourth perforated plate 7 is supported by the two second support rods 331.

[0043] Furthermore, the positioning frame 21 is provided with an installation port 212 that cooperates with the third limiting rod 31, and the two ends of the third limiting rod 31 are provided with a third support plate 28, and the third support plate 28 is provided with a fourth groove 281.

[0044] Specifically, during actual installation, the third limiting rod 31 needs to pass through the positioning frame 21, and both ends of the third limiting rod 31 are then fixed by the third support plate 28 to limit the height of the third limiting rod 31. Similarly, the top of the third support plate 28 is provided with a fourth groove 281 for radial positioning of the third limiting rod 31.

[0045] Example 2

[0046] A forklift mast crossbeam, assembled using the forklift mast crossbeam welding assembly fixture described in Embodiment 1, includes a first perforated plate 4, a second perforated plate 5, a third perforated plate 6, a fourth perforated plate 7, a first side plate 8, a second side plate 9, a third side plate 11, and an ear plate 10. The first perforated plate 4 and the second perforated plate 5 are arranged parallel to the Y-axis, and the third perforated plate 6 and the fourth perforated plate 7 are arranged parallel to the X-axis. The third perforated plate 6 is located at one end of the first perforated plate 4 and the second perforated plate 5, and the fourth perforated plate 7 is located at the other end of the first perforated plate 4 and the second perforated plate 5. Both the third perforated plate 6 and the fourth perforated plate 7 are perpendicular to the Y-axis. The first perforated plate 4 and the second perforated plate 5 are configured; the first side plate 8 and the second side plate 9 are both configured on the side of the first perforated plate 4 away from the second perforated plate 5, the first side plate 8 is configured on top of the second side plate 9, and the first side plate 8 and the second side plate 9 are both configured perpendicular to the first perforated plate 4; the third side plate 11 is configured on the side of the third perforated plate 6 away from the fourth perforated plate 7, and the third side plate 11 is configured perpendicular to the third perforated plate 6; the ear plate 10 is configured on the side of the first perforated plate 4 away from the second perforated plate 5, and the ear plate 10 is configured parallel to the first perforated plate 4.

[0047] The welding assembly fixture in Embodiment 1 of this utility model is applicable to the welding of the forklift mast crossbeam in Embodiment 2.

[0048] Furthermore, the first side plate 8 is provided with an ear hole 41 corresponding to the ear plate 10.

[0049] Furthermore, the first side plate 8 is provided with a mounting groove 81 that mates with the ear plate 10. During installation, the ear plate 10 is inserted into the mounting groove 81 to fix the distance between the ear plate 10 and the first hole plate 4.

[0050] In summary, this utility model introduces a welding and assembly fixture for forklift mast crossbeams and the forklift mast crossbeam itself. The welding and assembly fixture of this utility model can be used for assembling forklift mast crossbeams, allowing for initial positioning via spot welding followed by full welding. This utility model can precisely position the various components of the forklift mast crossbeam without the need for additional tooling and fixtures, enabling rapid assembly and welding without the need for measurement, marking, or labeling. This saves time, manpower, and financial resources, while also ensuring a high yield rate.

[0051] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A welding and assembly fixture for a forklift mast crossbeam, characterized in that, include: Fixing plate; The first positioning part includes a positioning frame, a first guide rail, a second guide rail, a first limiting rod, and a second limiting rod. The positioning frame is disposed on the top of the fixed plate, and the first guide rail and the second guide rail are disposed on both sides of the positioning frame along the X-axis direction. The first limiting rod is disposed on the top of the fixed plate and is disposed on one side of the positioning frame along the X-axis direction. The second limiting rod is disposed on the top of the positioning frame along the X-axis direction. The second positioning part includes a third limiting rod, a first support leg, a second support leg, and a third guardrail. The third limiting rod is arranged along the Y-axis and passes through the positioning frame. The first support leg and the second support leg are arranged on the fixed plate, with the first support leg located on the side of the positioning frame away from the first limiting rod and the second support leg located on the side of the first limiting rod away from the positioning frame. The third guardrail is provided on the side of the first support leg away from the positioning frame.

2. The forklift mast crossbeam welding and assembly fixture according to claim 1, characterized in that: The first limiting rod has a first support plate at both ends, and the first support plate has a first groove that cooperates with the first limiting rod.

3. The forklift mast crossbeam welding and assembly fixture according to claim 1, characterized in that: Both the first and second guards are set close to the positioning frame, and both the first and second guards have a slot on their top.

4. The forklift mast crossbeam welding and assembly fixture according to claim 1, characterized in that: A second support plate is provided on the side of the first grid away from the positioning frame. A second groove is provided on the second support plate to cooperate with the second limiting rod. A third groove is provided on the top of the positioning frame corresponding to the position of the second groove.

5. The forklift mast crossbeam welding and assembly fixture according to claim 1, characterized in that: The first leg includes at least one pair of first support rods, which are symmetrically arranged on both sides of the third limiting rod.

6. The forklift mast crossbeam welding and assembly fixture according to claim 1, characterized in that: The second leg includes at least one pair of second support rods, which are symmetrically arranged on both sides of the third limiting rod.

7. The forklift mast crossbeam welding and assembly fixture according to claim 1, characterized in that: The positioning frame has an installation port that cooperates with the third limiting rod. The third limiting rod has a third support plate at both ends and a fourth groove on the third support plate.

8. A forklift mast crossbeam, assembled using a forklift mast crossbeam welding assembly fixture as described in any one of claims 1-7, characterized in that, The device includes a first perforated plate, a second perforated plate, a third perforated plate, a fourth perforated plate, a first side plate, a second side plate, a third side plate, and an ear plate. The first and second perforated plates are parallel to the Y-axis, and the third and fourth perforated plates are parallel to the X-axis. The third perforated plate is located at one end of the first and second perforated plates, and the fourth perforated plate is located at the other end of the first and second perforated plates. Both the third and fourth perforated plates are perpendicular to the first and second perforated plates. The first and second side plates are both located on the side of the first perforated plate away from the second perforated plate. The first side plate is located on top of the second side plate, and both the first and second side plates are perpendicular to the first perforated plate. The third side plate is located on the side of the third perforated plate away from the fourth perforated plate, and the third side plate is perpendicular to the third perforated plate. The ear plate is located on the side of the first perforated plate away from the second perforated plate, and the ear plate is parallel to the first perforated plate.

9. The forklift mast crossbeam according to claim 8, characterized in that: The first side plate has an ear hole corresponding to the ear plate.

10. The forklift mast crossbeam according to claim 8, characterized in that: The first side plate is provided with a mounting groove that mates with the ear plate.

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