A welding fixture for the outer mast of a new energy forklift

Abstract

This utility model belongs to the technical field of vehicle mast welding fixtures, and aims to provide a welding fixture for the outer mast of a new energy forklift. It includes a base plate, on which, along its extension direction, are respectively provided an axle positioning assembly, a tilting cylinder positioning assembly, a chain plate positioning assembly, an intermediate support positioning assembly, and a composite roller positioning assembly. The axle positioning assembly has a horizontal plate support seat in front and a mast rear positioning block behind it. Several sets of outer clamping positioning assemblies are also provided on the side of the base plate. This utility model features a compact structure, good positioning effect, high welding efficiency, accurate post-weld dimensions, and convenient component installation and disassembly during welding. It can be widely used in the production technology of outer masts for new energy forklifts.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle mast welding fixture technology, specifically relating to a welding fixture for the outer mast of a new energy forklift. Background Technology

[0002] New energy forklifts are a type of industrial handling vehicle, referring to various 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 mast is the main load-bearing structure of the forklift's lifting device, and the welding quality of the mast structure directly affects the forklift's operational stability and safety. The forklift mast has a relatively complex structure, consisting of an inner mast, outer mast, fork carriage, forks, sprockets, chains, lifting cylinders, and tilting cylinders. The welding process of the outer mast requires strict control over the parallelism, perpendicularity, and distance between structural components, necessitating specialized tooling to control the accuracy of the welding process.

[0003] Currently, the welding of existing forklift masts mostly relies on manual marking, which can lead to positional misalignment during welding and rework. Furthermore, the high welding temperatures cause deformation due to thermal expansion and contraction, resulting in dimensional deviations in the welded mast and affecting forklift safety. Therefore, the existing welding fixture structure for new energy forklift masts 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 fixture for the outer mast of a new energy forklift. It has the characteristics of compact structure, good positioning effect, high welding efficiency, accurate post-weld dimensions, and convenient component installation and disassembly during the welding process. It can be widely used in the production technology field of outer masts for new energy forklifts.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a welding fixture for the outer mast of a new energy forklift, comprising a base plate, wherein the base plate is provided with an axle positioning assembly, a tilting cylinder positioning assembly, a chain plate positioning assembly, an intermediate support positioning assembly and a composite roller positioning assembly in the extension direction; the axle positioning assembly is provided with a horizontal plate support seat in front and a mast rear positioning block in the back; and the base plate is also provided with several sets of outer clamp positioning assemblies on its side.

[0006] As an improvement, the axle positioning assembly, tilt cylinder positioning assembly, chain plate positioning assembly, intermediate support positioning assembly, and composite roller positioning assembly are fixed to the base plate by hexagonal socket head cap screws.

[0007] As an improvement, the axle positioning assembly is provided with two symmetrical roller groups, which are used to position and fix the outer mast sprocket mounting part.

[0008] As an improvement, the base plate is provided with several sets of equal height blocks, which are arranged symmetrically from left to right and located on the same horizontal straight line.

[0009] As an improvement, the tilting cylinder positioning assembly is provided with a crossbar at the top that spans the middle of the base plate. The crossbar is a detachable structure and is fixedly connected by a pressure block.

[0010] As an improvement, the chain plate positioning assembly is equipped with a rotatable locking positioning plate, which can position and fix the chain plate of the outer gantry.

[0011] As an improvement, the intermediate support positioning component has a T-shaped structure and a 360° rotating support plate on the column.

[0012] As an improvement, the intermediate support positioning components are provided in two parallel sets, which are on the same horizontal line.

[0013] As an improvement, the composite roller positioning assembly has a roller top block on its outer top, and the roller top block adopts a bolt adjustment structure to adjust the ejection distance of the roller top block.

[0014] As an improvement, the outer clamp positioning assembly is provided in two sets and adopts a quick push-pull locking structure. An adjustable bolt is also provided on the top of the clamp to adjust the outer clamping distance to meet the installation matching of outer gantry of different sizes.

[0015] The beneficial effects achieved by this utility model are as follows: A welding fixture for the outer mast of a new energy forklift features a compact structure, good positioning effect, high welding efficiency, accurate post-weld dimensions, and convenient component installation and disassembly during the welding process. By integrating the axle positioning component, tilt cylinder positioning component, chain plate positioning component, intermediate support positioning component, and composite roller positioning component onto the base plate and fixing them with hexagonal socket head cap screws, the installation and fixing of each component is facilitated, as is the replacement of each component. By providing two symmetrical roller groups on the axle positioning component, it can be quickly matched and fixed with the semi-circular structure of the sprocket mounting part, improving the mast positioning efficiency. In addition, by setting two intermediate support positioning seats on the base plate, the support effect of the mast component is effectively improved, making the welding dimensions more accurate and improving the production efficiency of the outer mast of the new energy forklift. Attached Figure Description

[0016] Fig. 1 This is a schematic diagram of the structure of the welding fixture for the outer mast of a new energy forklift according to this utility model; Fig. 2 This is the front view of the welding fixture for the outer mast of the new energy forklift according to this utility model; Fig. 3This is a top view of the welding fixture for the outer mast of a new energy forklift according to this utility model.

[0017] In the diagram: 1. Base plate, 2. Axle positioning assembly, 3. Tilting cylinder positioning assembly, 4. Chain plate positioning assembly, 5. Intermediate support positioning assembly, 6. Composite roller positioning assembly, 7. Horizontal plate support seat, 8. Mast rear positioning block, 9. Outer clamp positioning assembly, 10. Equal height block, 21. Roller assembly, 31. Crossbar, 41. Locking positioning plate, 51. Rotating support plate, 61. Roller top block, 91. Adjustable bolt. Detailed Implementation

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

[0019] like Figs. 1-3 As shown in the figure, a welding fixture for the outer mast of a new energy forklift in this embodiment includes a base plate 1. The base plate 1 is provided with an axle positioning assembly 2, a tilting cylinder positioning assembly 3, a chain plate positioning assembly 4, an intermediate support positioning assembly 5, and a composite roller positioning assembly 6 in the extension direction. The axle positioning assembly 2 is provided with a horizontal plate support seat 7 in front and a mast rear positioning block 8 in the back. The base plate 1 is also provided with several sets of outer clamp positioning assemblies 9 on its side.

[0020] Furthermore, the axle positioning component 2, tilt cylinder positioning component 3, chain plate positioning component 4, intermediate support positioning component 5, and composite roller positioning component 6 are fixed to the base plate 1 by hexagon socket head cap screws; specifically, the base plate 1 has several bolt holes inside, which correspond to the positioning countersunk holes of each component base, thereby facilitating the installation, fixing, and disassembly of each component.

[0021] Furthermore, the axle positioning assembly 2 is provided with two symmetrical roller groups 21, which are used to position and fix the outer gantry sprocket mounting part. Specifically, the roller group 21 is a detachable structure and is connected and fixed by a central shaft. The diameter of the roller group 21 is slightly smaller than the semi-circular structure of the gantry sprocket, so as to facilitate fitting and positioning.

[0022] Furthermore, the base plate 1 is provided with several sets of equal height blocks 10, which are arranged symmetrically from left to right and located on the same horizontal straight line; specifically, there are 3 sets of equal height blocks 10, with two in each set. The equal height blocks 10 are arranged horizontally and have a height of 20~50mm, preferably 30~40mm. The equal height blocks 10 can be used to fix the vertical components of the gantry strip at the same horizontal height to ensure welding accuracy.

[0023] Furthermore, the top of the tilting cylinder positioning assembly 3 is provided with a crossbar 31 that spans the middle position of the base plate 1. The crossbar 31 is a detachable structure and is fixedly connected by a pressure block. Specifically, during welding, the crossbar 31 is positioned and fixed after passing through the center hole of the gantry tilting plate.

[0024] Furthermore, the chain plate positioning assembly 4 is provided with a rotatable locking positioning plate 41, which can position and fix the chain plate of the outer gantry; specifically, the chain plate positioning assembly 4 is tightened and loosened by a quick-change switch.

[0025] Furthermore, the intermediate support positioning component 5 has a T-shaped structure and a 360° rotating support plate 51 on the column. The rotatable structure improves the efficiency of the support plate. Specifically, the intermediate support positioning component 5 has two parallel sets that are on the same horizontal line, thereby providing better support and fixation for the long gantry.

[0026] Furthermore, the composite roller positioning assembly 6 has a roller top block 61 on its outer top. The roller top block 61 adopts a bolt adjustment structure, which can adjust the ejection distance of the roller top block, thus making it suitable for different gantry sizes.

[0027] Furthermore, the outer clamp positioning assembly 9 is provided in two sets and adopts a quick push-pull locking structure. An adjustable bolt 91 is also provided on the top of the clamp to adjust the outer clamping distance, so as to meet the installation matching of different sizes of outer gantry and improve the installation and disassembly efficiency of the gantry.

[0028] This utility model relates to a welding fixture for the outer mast of a new energy forklift. It features a compact structure, good positioning effect, high welding efficiency, accurate post-weld dimensions, and convenient component installation and disassembly during the welding process. The outer mast assembly is fixed to the axle positioning assembly 2, tilt cylinder positioning assembly 3, chain plate positioning assembly 4, intermediate support positioning assembly 5, and composite roller positioning assembly 6 on the base plate 1 using a bulk plate method. The vertical mast beam is supported at the same height by the equal height block 10. The two sets of outer clamp positioning assemblies 9 are adjusted to press the outer side of the bulk plate. The mast rear positioning block 8 is adjusted to position and fix the length of the outer mast. Then, the joint is welded manually or by robot. After welding is completed, the clamping switch is released and the welded outer mast assembly is taken out.

[0029] 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 fixture for the outer mast of a new energy forklift, comprising a base plate (1), characterized in that, The base plate (1) is provided with an axle positioning assembly (2), a tilting cylinder positioning assembly (3), a chain plate positioning assembly (4), an intermediate support positioning assembly (5), and a composite roller positioning assembly (6) in the extension direction; the axle positioning assembly (2) is provided with a horizontal plate support seat (7) in front and a mast rear positioning block (8) in the back; the base plate (1) is also provided with several sets of outer clamp positioning assemblies (9) on the side.

2. The welding fixture for the outer mast of a new energy forklift according to claim 1, characterized in that, The axle positioning assembly (2), tilt cylinder positioning assembly (3), chain plate positioning assembly (4), intermediate support positioning assembly (5) and composite roller positioning assembly (6) are fixed to the base plate (1) by internal hex bolts.

3. The welding fixture for the outer mast of a new energy forklift according to claim 2, characterized in that, The axle positioning component (2) is provided with two symmetrical roller groups (21), which are used to position and fix the outer mast sprocket mounting part.

4. The welding fixture for the outer mast of a new energy forklift according to claim 1, characterized in that, The base plate (1) is provided with several sets of equal height blocks (10), which are arranged symmetrically on the left and right and located on the same horizontal straight line.

5. The welding fixture for the outer mast of a new energy forklift according to claim 1, characterized in that, The tilting cylinder positioning assembly (3) has a horizontal bar (31) spanning the middle position of the base plate at the top. The horizontal bar (31) is a detachable structure and is fixedly connected by a pressure block.

6. The welding fixture for the outer mast of a new energy forklift according to claim 1, characterized in that, The chain plate positioning assembly (4) is equipped with a rotatable locking positioning plate (41) which can position and fix the chain plate of the outer gantry.

7. The welding fixture for the outer mast of a new energy forklift according to claim 1, characterized in that, The intermediate support positioning component (5) has a T-shaped structure and a 360° rotating support plate (51) on the column.

8. The welding fixture for the outer mast of a new energy forklift according to claim 7, characterized in that, The intermediate support positioning component (5) consists of two parallel sets, which are located on the same horizontal line.

9. The welding fixture for the outer mast of a new energy forklift according to claim 1, characterized in that, The composite roller positioning assembly (6) has a roller top block (61) on its outer top. The roller top block (61) adopts a bolt adjustment structure, which can adjust the ejection distance of the roller top block.

10. The welding fixture for the outer mast of a new energy forklift according to claim 1, characterized in that, The outer clamp positioning assembly (9) has two sets and adopts a quick push-pull locking structure. An adjustable bolt (91) is also provided on the top of the clamp.

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