A welding device for the tail frame of a new energy forklift

Abstract

This utility model discloses a welding device for the tailstock of a new energy forklift, including a base plate. The base plate is provided with a tailstock fixing seat, a front tailstock positioning assembly, a rear tailstock positioning assembly, a front tailstock inner side positioning assembly, and a water tank bracket positioning assembly. The tailstock fixing seat has a base plate limiting block, and a tailstock clamping positioning pin is provided next to the base plate limiting block. A tailstock clamping bushing is provided on the tailstock clamping positioning pin. Rear axle positioning pins are also provided at the four corners of the tailstock fixing seat. The front tailstock positioning assembly is located on both sides of the front end of the base plate and is horizontally close to the front tailstock inner side positioning assembly. The rear tailstock positioning assembly is located on both sides of the middle of the base plate and is horizontally close to the water tank bracket positioning assembly. This utility model features a compact structure, good positioning effect, convenient tailstock installation and disassembly, and high tailstock production efficiency, and can be widely used in the field of new energy forklift tailstock production technology.

Description

Technical Field

[0001] This utility model belongs to the technical field of vehicle tail frame welding fixtures, specifically relating to a welding device for the tail frame of a new energy forklift. Background Technology

[0002] New energy forklifts are a type of industrial handling vehicle. They are wheeled handling vehicles that use new energy sources to load, unload, stack, and transport palletized goods over short distances. They are widely used in stations, ports, airports, factories, warehouses, and other fields. The forklift tail carriage is an important component of the forklift and is mostly fixed by welding or other methods.

[0003] Currently, the welding of existing forklift tailstocks is done manually without professional positioning fixtures. This leads to positional misalignment during welding, and the high welding temperature causes deformation due to thermal expansion and contraction, resulting in dimensional deviations in the welded tailstock and affecting the forklift's performance. Patent application number "202223170356.9" discloses a welding fixture for forklift tailstocks, including a positioning component for defining the workpiece position. This fixture uses a base plate, support plate, telescopic clamping mechanism, and counterweight positioning component to simultaneously position the various components of the workpiece, assembling and positioning each component to form a preliminary workpiece shape, thus improving the yield rate of welded forklift tailstocks. Patent application number "202321887809.1" describes an integrated welding mechanism for the tailstock of an internal combustion forklift, including a base plate. Bases are mounted on both sides of the upper surface of the base plate. A clamping component is installed at the midpoint between the two bases on the upper surface of the base plate. Two positioning bases are mounted on the upper surface of the base plate. A limiting component is provided near the side edge of the upper surface of the base plate, enabling online welding of the integrated product, reducing secondary positioning and lifting work, and improving production efficiency. However, existing tailstock welding fixtures are cumbersome in the positioning process and have poor positioning effect. The disassembly and assembly of the tailstock components are also troublesome, especially for the complex tailstocks of new energy forklifts with water tanks. Existing welding fixtures are impractical and require manual assembly and welding, resulting in low production efficiency. Therefore, the existing welding fixture structure for new energy forklift tailstocks needs further improvement. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a welding device for the tail frame of a new energy forklift. It has the characteristics of compact structure, good positioning effect, convenient installation and disassembly of tail frame and high tail frame production efficiency, and can be widely used in the field of new energy forklift tail frame production technology.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a welding device for the tail frame of a new energy forklift, comprising a base plate, wherein the base plate is provided with a tail frame fixing seat, a front tail plate positioning assembly, a rear tail plate positioning assembly, a front tail plate inner side positioning assembly and a water tank bracket positioning assembly. The tailstock mounting base is provided with a base plate limiting block, and a tailstock clamping positioning pin is provided on the side of the base plate limiting block. A tailstock clamping bushing is provided on the tailstock clamping positioning pin. Rear axle positioning pins are also provided at the four corners of the tailstock mounting base. The front tailgate positioning assembly is located on both sides of the front end of the bottom plate and is close to the inner side positioning assembly of the front tailgate in the horizontal direction. The rear tailgate positioning assembly is located on both sides of the middle of the bottom plate and is close to the water tank bracket positioning assembly in the horizontal direction.

[0006] As an improvement, the tailstock mounting base, front tailplate positioning assembly, rear tailplate positioning assembly, front tailplate inner side positioning assembly, and water tank bracket positioning assembly are all fixed to the base plate by hexagon socket head cap screws, and corresponding bolt holes are provided inside the base plate.

[0007] As an improvement, the base plate is provided with a tailstock support and positioning block, which has an L-shaped structure.

[0008] As an improvement, there are two tailstock support positioning blocks, which are arranged in a figure-eight pattern, with an included angle of 60° to 80° between the two tailstock support positioning blocks.

[0009] As an improvement, the front tailgate positioning assembly is provided with upper and lower roller sets on the side, and the front tailgate inner positioning assembly is provided with a front tailgate telescopic top rod, which facilitates the welding and disassembly of the tail frame.

[0010] As an improvement, the rear tailplate positioning assembly is equipped with a rear tailplate telescopic top rod and upper and lower proximity roller assemblies on the side, which facilitates the welding and disassembly of the tailplate.

[0011] As an improvement, the tailstock mounting base is provided with a tailstock telescopic top rod at its top.

[0012] As an improvement, the tailstock mounting base is provided with a steering axle baffle bracket at its rear end, and there are two symmetrical steering axle baffle brackets.

[0013] As an improvement, the tailstock mounting base is provided with two symmetrical tilt detection and positioning support frames on both sides.

[0014] As an improvement, the base plate limiting block has an L-shaped structure, with two blocks in total, and they are symmetrically distributed on the same horizontal line.

[0015] The beneficial effects of this utility model are as follows: A welding device for the tail frame of a new energy forklift features a compact structure, good positioning effect, convenient installation and disassembly of the tail frame, and high production efficiency of the tail frame. By integrating the tail frame fixing seat, front tail plate positioning assembly, rear tail plate positioning assembly, inner front tail plate positioning assembly, and water tank bracket positioning assembly onto the base plate and fixing them with hexagonal socket head cap screws, the fixing and welding of the tail frame is facilitated and the welding efficiency is improved. By setting a tail frame clamping positioning pin in the center of the tail frame fixing seat, the welding dimensional accuracy of the tail frame is ensured, and the deformation problem after welding is avoided. By setting roller groups on the front and rear tail plate positioning assemblies and cooperating with the tail plate telescopic top rod, the tail plate can be easily inserted and fixed, making the operation more convenient and preventing damage to the tail plate. In addition, by setting an inclination detection positioning support frame on the base plate, the support effect of the inclination plates on both sides of the tail frame is effectively improved, and the welding dimensions are more accurate, avoiding the tedious operation of measuring and welding at the same time. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the welding device for the tail frame of a new energy forklift according to this utility model; Figure 2 This is the front view of the welding device for the tail frame of a new energy forklift according to this utility model; Figure 3 This is a top view of the welding device for the tail frame of a new energy forklift according to this utility model; Figure 4 This is a schematic diagram of the assembly process of the welding device for the tail frame of a new energy forklift according to this utility model.

[0017] In the diagram: 1. Base plate, 2. Tail frame mounting bracket, 3. Front tail frame positioning assembly, 4. Rear tail frame positioning assembly, 5. Front tail frame inner side positioning assembly, 6. Water tank bracket positioning assembly, 7. Tilt detection positioning support frame, 8. Tail frame support positioning block, 9. Tail frame assembly, 11. Bolt hole, 21. Base plate limiting block, 22. Tail frame clamping positioning pin, 23. Tail frame clamping bushing, 24. Rear axle positioning pin, 25. Tail frame telescopic top rod, 26. Steering axle baffle bracket, 31. Upper and lower far roller assembly, 41. Rear tail frame telescopic top rod, 42. Upper and lower near roller assembly, 51. Front tail frame telescopic top rod. Detailed Implementation

[0018] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0019] like Figures 1-3 As shown, a new energy forklift tail frame welding device in this embodiment includes a base plate 1, on which a tail frame fixing seat 2, a front tail plate positioning assembly 3, a rear tail plate positioning assembly 4, a front tail plate inner side positioning assembly 5, and a water tank bracket positioning assembly 6 are provided. The tailstock fixing seat 2 is provided with a base plate limiting block 21, and a tailstock clamping positioning pin 22 is provided on the side of the base plate limiting block 21. A tailstock clamping bushing 23 is provided on the tailstock clamping positioning pin 22. The tailstock fixing seat 2 is also provided with a rear axle positioning pin 24 at the four corners. Specifically, the base plate limiting block 21 has an L-shaped structure, and there are two blocks in total, which are symmetrically distributed on the same horizontal line to facilitate limiting and support. The front tailgate positioning assembly 3 is located on both sides of the front end of the bottom plate 1 and is close to the front tailgate inner positioning assembly 5 in the horizontal direction; The rear tailplate positioning assembly 4 is located on both sides of the middle of the base plate 1 and is close to the water tank bracket positioning assembly 6 in the horizontal direction.

[0020] Furthermore, the tailstock mounting base 2, the front tailplate positioning assembly 3, the rear tailplate positioning assembly 4, the front tailplate inner side positioning assembly 5, and the water tank bracket positioning assembly 6 are all fixed to the base plate 1 by hexagon socket head cap screws. Bolt holes 11 are correspondingly provided inside the base plate 1. Specifically, the lower end of the tailstock mounting base 2, the front tailplate positioning assembly 3, the rear tailplate positioning assembly 4, the front tailplate inner side positioning assembly 5, and the water tank bracket positioning assembly 6 are all provided with two or four hexagon socket head cap screw countersunk holes, and the center distance of the countersunk holes is the same as the size of the bolt holes 11 provided inside the base plate 1, thereby facilitating the fixed connection between different assemblies and the base plate.

[0021] Furthermore, the base plate 1 is provided with a tail frame support positioning block 8, and the tail frame support positioning block 25 has an L-shaped structure; specifically, there are two tail frame support positioning blocks 8, which are distributed in a figure-eight pattern, and the included angle between the two tail frame support positioning blocks 8 is 60°~80°, preferably 70°; the tail frame panel is effectively supported by the tail frame support positioning block 25.

[0022] Furthermore, the front tailplate positioning assembly 3 is provided with upper and lower roller groups 31 on its side, and the front tailplate inner positioning assembly 5 is provided with a front tailplate telescopic top rod 51. With the cooperation of the telescopic top rod and the roller group, the operation is more convenient when inserting or removing the tailplate at the front end, and the tailplate will not be damaged, thus improving production efficiency.

[0023] Furthermore, the rear tail plate positioning assembly 4 is provided with a rear tail plate telescopic top rod 41 and an upper and lower proximity roller assembly 42 on the side. Through the cooperation of the telescopic top rod and the roller assembly, the operation is more convenient when inserting or removing the tail plate at the rear end, and the tail plate will not be damaged, thus improving production efficiency.

[0024] Furthermore, the tailstock mounting base 2 is provided with a tailstock telescopic top rod 25 at its top end, which holds and fixes the bottom of the tailstock to prevent displacement during welding; even further, the tailstock mounting base 2 is provided with a steering axle baffle bracket 26 at its rear end, and there are two symmetrical steering axle baffle brackets 26.

[0025] Furthermore, the tailstock fixing seat 2 is provided with two symmetrical tilt detection and positioning support frames 7 on both sides. The tilt detection and positioning support frames 7 improve the support effect of the tilt plates on both sides of the tailstock and make the welding dimensions more accurate, avoiding the tedious operation of measuring and welding at the same time.

[0026] This utility model's welding device for the tail frame of a new energy forklift features a compact structure, good positioning effect, convenient tail frame installation and disassembly, and high tail frame production efficiency; for example, Figure 4 As shown, the tailstock assembly 9 is fixed to the tailstock mounting base 2, front tailstock positioning assembly 3, rear tailstock positioning assembly 4, front tailstock inner side positioning assembly 5, water tank bracket positioning assembly 6, and tilt detection positioning support frame 7 on the base plate 1 by means of loose plates. The loose plates are pressed together by adjusting the corresponding positioning pins and telescopic top rods. Then, the joints are welded by hand or robot. After welding is completed, the positioning pins and telescopic top rods are released and the welded tailstock assembly 9 is taken out.

[0027] Finally, it should be noted that the above examples are merely specific embodiments of this utility model. Obviously, this utility model is not limited to the above embodiments and can have many variations. All variations that can be directly derived or conceived by those skilled in the art from the disclosure of this utility model should be considered within the protection scope of this utility model.

Claims

1. A welding device for the tail frame of a new energy forklift, comprising a base plate (1), characterized in that, The base plate (1) is provided with a tail rack fixing seat (2), a front tail rack positioning assembly (3), a rear tail rack positioning assembly (4), a front tail rack inner side positioning assembly (5), and a water tank bracket positioning assembly (6). The tailstock fixing seat (2) is provided with a bottom plate limiting block (21), and a tailstock clamping positioning pin (22) is provided on the side of the bottom plate limiting block (21). A tailstock clamping bushing (23) is provided on the tailstock clamping positioning pin (22); and a rear axle positioning pin (24) is also provided at the four corners of the tailstock fixing seat (2). The front tailgate positioning assembly (3) is located on both sides of the front end of the bottom plate (1) and is close to the front tailgate inner positioning assembly (5) in the horizontal direction. The rear tail plate positioning assembly (4) is located on both sides of the middle of the bottom plate (1) and is close to the water tank bracket positioning assembly (6) in the horizontal direction.

2. The welding device for the tail frame of a new energy forklift according to claim 1, characterized in that, The tailstock mounting base (2), the front tailplate positioning assembly (3), the rear tailplate positioning assembly (4), the front tailplate inner side positioning assembly (5), and the water tank bracket positioning assembly (6) are all fixed to the base plate (1) by internal hex bolts, and bolt holes (11) are provided inside the base plate (1).

3. The welding device for the tail frame of a new energy forklift according to claim 2, characterized in that, The base plate (1) is provided with a tail frame support positioning block (8), which has an L-shaped structure.

4. The welding device for the tail frame of a new energy forklift according to claim 3, characterized in that, There are two tail frame support positioning blocks (8), which are arranged in a figure-eight pattern, and the included angle between the two tail frame support positioning blocks (8) is 60°~80°.

5. The welding device for the tail frame of a new energy forklift according to claim 1, characterized in that, The front tailgate positioning assembly (3) is provided with upper and lower roller groups (31) on the side, and the front tailgate inner positioning assembly (5) is provided with a front tailgate telescopic top rod (51).

6. The welding device for the tail frame of a new energy forklift according to claim 1, characterized in that, The rear tailgate positioning assembly (4) is provided with a rear tailgate telescopic top rod (41) and an upper and lower proximity roller assembly (42) on the side.

7. The welding device for the tail frame of a new energy forklift according to claim 1, characterized in that, The tail frame mounting base (2) is provided with a tail frame telescopic top rod (25) at its top.

8. The welding device for the tail frame of a new energy forklift according to claim 7, characterized in that, The tailstock mounting base (2) is provided with a steering axle baffle bracket (26) at its tail end. There are two symmetrical steering axle baffle brackets (26).

9. The welding device for the tail frame of a new energy forklift according to claim 7 or 8, characterized in that, The tailstock fixing seat (2) is provided with two symmetrical tilt detection and positioning support frames (7) on both sides.

10. The welding device for the tail frame of a new energy forklift according to claim 1, characterized in that, The bottom plate limiting block (21) has an L-shaped structure, with two blocks in total, and they are symmetrically distributed on the same horizontal line.

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