A twenty-foot container chassis tailor-welding tool

Abstract

This invention discloses a welding fixture for a 20-foot container chassis, relating to the field of welding. It includes a fixed platform, with a first mounting plate fixedly installed at the front of the upper end of the fixed platform, and a second mounting plate fixedly installed at the rear of the upper end of the fixed platform. A positioning plate mounting bracket is fixedly installed at the center of the upper end of the first mounting plate, and a crossbeam positioning plate is fixedly installed on the outer side of the positioning plate mounting bracket. This invention achieves synchronous, independent, and precise positioning of the four corners of the container chassis body, using a multi-point collaborative positioning method. This not only macroscopically locks the overall contour of the chassis, preventing twisting or displacement under welding thermal stress, but also solves the problem that traditional fixtures can only correspond to a single specification of product. When welding container chassis of different models or sizes, operators do not need to change the entire fixture; they only need to simply adjust the position of the sliding positioning plate to change the positioning point of the crossbeam.

Description

Technical Field

[0001] This invention relates to the field of welding, and in particular to a welding fixture for assembling a 20-foot container chassis. Background Technology

[0002] The 20-foot container chassis welding fixture is a tooling used to fix the 20-foot container chassis and to assist in welding. The 20-foot container chassis is a key load-bearing structure that is welded together from various horizontal beams, vertical beams and reinforcing plates. Its welding accuracy directly affects the overall assembly quality and service life of the container. At present, manual welding is mainly used in the welding process of the 20-foot container chassis.

[0003] However, when using welding fixtures, firstly, traditional manual welding lacks an effective multi-point collaborative positioning mechanism, making it difficult to synchronously, independently, and precisely limit the four corners of the underframe body. During the welding process, due to the effect of welding thermal stress, the underframe is prone to twisting or displacement, resulting in overall profile deformation and poor diagonal dimension consistency, failing to provide a high-precision benchmark for subsequent processes. Secondly, existing welding fixtures are usually fixed structures, only suitable for single-specification container underframe products. When welding underframes of different models or sizes, the entire set of fixtures must be replaced, increasing fixture costs and causing low production efficiency due to frequent fixture changes, failing to meet the needs of flexible production. Furthermore, in terms of positioning crossbeams and vertical beams, manual welding makes it difficult to strictly limit the crossbeams and vertical beams to the orthogonal positions required by the design drawings. In particular, the intersection of the longitudinal and transverse beams in the central area of ​​the underframe, as the core part with the most complex stress, makes it difficult to guarantee its verticality and spacing tolerance, easily leading to dimensional deviations caused by manual welding, seriously affecting the product yield and subsequent assembly quality. Summary of the Invention

[0004] The main objective of this invention is to provide a welding fixture for a 20-foot container chassis, which can effectively solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A welding fixture for a 20-foot container underframe includes a fixed platform. A first mounting plate is fixedly installed at the front of the upper end of the fixed platform, and a second mounting plate is fixedly installed at the rear of the upper end of the fixed platform. A positioning plate mounting bracket is fixedly installed at the center of the upper end of the first mounting plate, and a crossbeam positioning plate is fixedly installed on the outer side of the positioning plate mounting bracket. A first corner positioning plate is fixedly installed on one side of the upper end of the first mounting plate, and a crossbeam fixing bracket is fixedly installed on the other side of the upper end of the first mounting plate. A second corner positioning plate is fixedly installed on one side of the upper end of the second mounting plate, and a third corner positioning plate is fixedly installed on the other side of the upper end of the second mounting plate. Two sets of adjustment and positioning structures are fixedly installed in the middle of the upper end of the fixed platform, and multiple vertical beam positioning plates are fixedly installed on the side of the upper end of the fixed platform located at the adjustment and positioning structures.

[0007] As a further embodiment of the present invention, the first corner positioning plate, the crossbeam fixing frame, the second corner positioning plate, and the third corner positioning plate are located at the upper four corners of the fixing platform.

[0008] As a further embodiment of the present invention, the adjustment and positioning structure includes a central mounting plate, an adjustment mounting frame, and an adjustment positioning plate. The central mounting plate is fixedly mounted on the upper end of the fixed platform, the adjustment mounting frame is fixedly mounted on the upper end of the central mounting plate, and multiple adjustment positioning plates are movably mounted on the upper end of the adjustment mounting frame.

[0009] As a further embodiment of the present invention, the adjusting positioning plate slides around the adjusting mounting bracket and is positioned by tightening the central mounting plate with screws.

[0010] As a further embodiment of the present invention, the beam positioning plate is located in front of the adjustment positioning plate.

[0011] As a further embodiment of the present invention, the vertical beam positioning plate is located on one side of the adjustment positioning plate, and multiple vertical beam positioning plates are arranged in a straight line.

[0012] As a further embodiment of the present invention, a container chassis body is placed on top of the fixed platform, and the first corner positioning plate, the crossbeam fixing frame, the second corner positioning plate and the third corner positioning plate are connected to the four corners of the container chassis body.

[0013] As a further embodiment of the present invention, the vertical beam positioning plate and the adjusting positioning plate are located at the center of the container underframe body.

[0014] Compared with the prior art, the present invention has the following beneficial effects: by setting a first corner positioning plate, a crossbeam fixing frame, a second corner positioning plate and a third corner positioning plate respectively in the four corner areas of the fixed platform, namely the first mounting plate and the second mounting plate, the synchronous, independent and precise positioning of the four corners of the container chassis body is realized. The multi-point coordinated positioning method not only locks the overall outline of the chassis from a macroscopic point to prevent it from twisting or displacing under the action of welding thermal stress, but also ensures the consistency of the diagonal dimensions of the chassis, providing a high-precision benchmark for subsequent processes;

[0015] By adjusting the positioning structure, the positioning plate can slide freely on the mounting bracket and be rigidly locked by tightening the center mounting plate with screws. This solves the problem that traditional tooling can only be used for a single product specification. When welding container frames of different models or sizes, operators do not need to replace the entire tooling. They can simply adjust the position of the sliding positioning plate to change the positioning point of the crossbeam, which greatly improves the versatility and flexibility of the tooling and reduces the tooling cost for enterprises.

[0016] By precisely positioning the crossbeam positioning plate in front of the adjustment positioning plate and placing multiple vertical beam positioning plates arranged in a straight line on one side of the adjustment positioning plate, this close spatial arrangement ensures that the crossbeams and vertical beams are strictly positioned at the orthogonal positions required by the design drawings before welding. In particular, the adjustment positioning plate and the vertical beam positioning plate are located in the central area of ​​the container chassis, directly acting on the core part with the most complex stress, effectively ensuring the verticality and spacing tolerance of the intersection of the longitudinal and transverse beams, fundamentally avoiding dimensional deviations caused by manual welding, and significantly improving the product yield. Attached Figure Description

[0017] Figure 1 This is an overall structural diagram of a welding fixture for a 20-foot container chassis according to the present invention;

[0018] Figure 2 This is an enlarged view of the adjustment and positioning structure in a welding fixture for a 20-foot container chassis according to the present invention;

[0019] Figure 3 This is a structural diagram of the container chassis body after it has been placed in the welding fixture for a 20-foot container chassis according to the present invention.

[0020] Figure 4 This invention relates to a welding fixture for assembling a 20-foot container chassis. Figure 3 Enlarged view of A in the middle;

[0021] Figure 5 This invention relates to a welding fixture for assembling a 20-foot container chassis. Figure 3 A magnified view of B in the middle.

[0022] In the diagram: 1. Fixed platform; 2. First mounting plate; 3. Positioning plate mounting frame; 4. Crossbeam positioning plate; 5. First corner positioning plate; 6. Crossbeam fixing frame; 7. Second mounting plate; 8. Second corner positioning plate; 9. Third corner positioning plate; 10. Adjustment positioning structure; 11. Center mounting plate; 12. Adjustment mounting frame; 13. Adjustment positioning plate; 14. Vertical beam positioning plate; 15. Container base frame main body. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0024] like Figures 1-5 As shown, a welding fixture for assembling a 20-foot container chassis is provided. Please refer to it carefully. Figures 1-5 The system includes a fixed platform 1, a first mounting plate 2 fixedly installed at the front of the upper end of the fixed platform 1, a second mounting plate 7 fixedly installed at the rear of the upper end of the fixed platform 1, a positioning plate mounting bracket 3 fixedly installed at the center of the upper end of the first mounting plate 2, a crossbeam positioning plate 4 fixedly installed on the outer side of the positioning plate mounting bracket 3, a first corner positioning plate 5 fixedly installed on one side of the upper end of the first mounting plate 2, a crossbeam fixing bracket 6 fixedly installed on the other side of the upper end of the first mounting plate 2, a second corner positioning plate 8 fixedly installed on one side of the upper end of the second mounting plate 7, a third corner positioning plate 9 fixedly installed on the other side of the upper end of the second mounting plate 7, two sets of adjustment positioning structures 10 fixedly installed in the middle of the upper end of the fixed platform 1, and multiple vertical beam positioning plates 14 fixedly installed on one side of the adjustment positioning structure 10 at the upper end of the fixed platform 1.

[0025] Please refer to this carefully. Figure 1 and Figure 3 The first corner positioning plate 5, the crossbeam fixing frame 6, the second corner positioning plate 8, and the third corner positioning plate 9 are located at the four upper corners of the fixed platform 1.

[0026] Please refer to this carefully. Figure 3 The adjustment and positioning structure 10 includes a central mounting plate 11, an adjustment mounting frame 12, and adjustment positioning plates 13. The central mounting plate 11 is fixedly mounted on the upper end of the fixed platform 1, the adjustment mounting frame 12 is fixedly mounted on the upper end of the central mounting plate 11, and multiple adjustment positioning plates 13 are movably mounted on the upper end of the adjustment mounting frame 12.

[0027] Please refer to this carefully. Figure 2 The positioning plate 13 is adjusted to slide around the adjustment mounting bracket 12 and is positioned by tightening the center mounting plate 11 with screws.

[0028] Please refer to this carefully. Figure 1 and Figure 2 The crossbeam positioning plate 4 is located in front of the adjustment positioning plate 13.

[0029] Specifically, the crossbeam positioning plate 4 and the adjusting positioning plate 13 serve to position the crossbeam, and the adjusting positioning plate 13 slides around the adjusting mounting bracket 12 to adjust the installation position and change the positioning position of the crossbeam, which is used in conjunction with the welding of different models of container base frame bodies 15.

[0030] Please refer to this carefully. Figure 1 The vertical beam positioning plate 14 is located on one side of the adjustment positioning plate 13, and multiple vertical beam positioning plates 14 are arranged in a straight line.

[0031] Specifically, the vertical beam positioning plate 14 serves to position the vertical beam.

[0032] Please refer to this carefully. Figures 3-5 The container base frame 15 is placed on top of the fixed platform 1. The first corner positioning plate 5, the crossbeam fixing frame 6, the second corner positioning plate 8 and the third corner positioning plate 9 are connected to the four corners of the container base frame 15.

[0033] Specifically, the first corner positioning plate 5, the crossbeam fixing frame 6, the second corner positioning plate 8, and the third corner positioning plate 9 position the four corners of the container base frame body 15, thereby fixing the container base frame body 15 above the fixed platform 1.

[0034] Please refer to this carefully. Figure 3 The vertical beam positioning plate 14 and the adjustment positioning plate 13 are located at the center of the container underframe body 15.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A welding fixture for a 20-foot container underframe, comprising a fixed platform (1), wherein a first mounting plate (2) is fixedly installed at the front of the upper end of the fixed platform (1), and a second mounting plate (7) is fixedly installed at the rear of the upper end of the fixed platform (1), characterized in that: A positioning plate mounting bracket (3) is fixedly installed at the upper center of the first mounting plate (2). A crossbeam positioning plate (4) is fixedly installed on the outer side of the positioning plate mounting bracket (3). A first corner positioning plate (5) is fixedly installed on one side of the upper end of the first mounting plate (2). A crossbeam fixing bracket (6) is fixedly installed on the other side of the upper end of the first mounting plate (2). A second corner positioning plate (8) is fixedly installed on one side of the upper end of the second mounting plate (7). A third corner positioning plate (9) is fixedly installed on the other side of the upper end of the second mounting plate (7). Two sets of adjustment positioning structures (10) are fixedly installed in the middle of the upper end of the fixed platform (1). Multiple vertical beam positioning plates (14) are fixedly installed on one side of the adjustment positioning structure (10) at the upper end of the fixed platform (1).

2. The welding fixture for a 20-foot container chassis according to claim 1, characterized in that: The first corner positioning plate (5), the crossbeam fixing frame (6), the second corner positioning plate (8) and the third corner positioning plate (9) are located at the four upper corners of the fixed platform (1).

3. The welding fixture for a 20-foot container chassis according to claim 1, characterized in that: The adjustment and positioning structure (10) includes a central mounting plate (11), an adjustment mounting frame (12), and an adjustment positioning plate (13). The central mounting plate (11) is fixedly installed on the upper end of the fixed platform (1), the adjustment mounting frame (12) is fixedly installed on the upper end of the central mounting plate (11), and multiple adjustment positioning plates (13) are movably installed on the upper end of the adjustment mounting frame (12).

4. The welding fixture for a 20-foot container chassis according to claim 3, characterized in that: The adjustment positioning plate (13) slides around the adjustment mounting bracket (12) and is positioned by tightening the center mounting plate (11) with screws.

5. The welding fixture for a 20-foot container chassis according to claim 3, characterized in that: The beam positioning plate (4) is located in front of the adjustment positioning plate (13).

6. The welding fixture for a 20-foot container chassis according to claim 3, characterized in that: The vertical beam positioning plate (14) is located on one side of the adjustment positioning plate (13), and multiple vertical beam positioning plates (14) are arranged in a line.

7. The welding fixture for a 20-foot container chassis according to claim 3, characterized in that: The container base frame body (15) is placed on top of the fixed platform (1). The first corner positioning plate (5), the crossbeam fixing frame (6), the second corner positioning plate (8) and the third corner positioning plate (9) are connected to the four corners of the container base frame body (15).

8. The welding fixture for a 20-foot container chassis according to claim 4, characterized in that: The vertical beam positioning plate (14) and the adjustment positioning plate (13) are located at the center of the container underframe body (15).

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