Welding tool for clean water tank of motor train unit

Abstract

The utility model relates to the technical field of motor train unit clean water tank welding tools, in particular to a motor train unit clean water tank welding tool. The positioning device comprises a clamping groove structure composed of a positioning frame, a fixing rod, a stop rod and a base plate, and the clear water tanks of different sizes are accurately positioned and supported by adjusting the positions of the fixing rod and the stop rod in cooperation with an ejection assembly and a sliding structure. The technical effects that the welding requirements of clean water tanks of various sizes are flexibly met, the tool using efficiency is improved, and the welding precision is guaranteed are achieved.

Description

Technical Field

[0001] This application relates to the field of welding fixtures for clean water tanks of high-speed trains, and in particular to a welding fixture for clean water tanks of high-speed trains. Background Technology

[0002] As a key component of the water supply system for high-speed trains, the manufacturing process of the water tank directly affects the reliability and safety of the train's operation. In recent years, with the rapid development of high-speed rail technology, the manufacturing process of water tanks has gradually moved towards higher precision and higher efficiency. The application of automated welding equipment has significantly improved welding efficiency and quality, bringing significant technological progress and economic benefits to the high-speed rail manufacturing industry. However, in actual production, the complex structural design of the water tank places higher demands on welding positioning, becoming a significant factor restricting the improvement of manufacturing efficiency. Currently, the industry typically uses manual-assisted fixture positioning to address the welding positioning problem of water tanks. Specifically, technicians manually adjust the fixture position to fix the bottom and side plates of the water tank in preset positions before welding. In addition, there are some common methods, such as using a simple frame structure for preliminary positioning of the water tank, or using bolts for local positioning. Although these methods can meet basic positioning requirements to a certain extent, they still have many limitations. The aforementioned traditional positioning methods suffer from low positioning accuracy and complex operation, especially when dealing with water tanks with multi-curved spliced ​​structures, making it difficult to achieve fast and accurate positioning. This not only increases the time cost of manual operation but may also lead to deviations during the welding process, affecting the sealing and durability of the final product. Therefore, there is an urgent need for a solution that can improve the efficiency and accuracy of welding positioning in clean water tanks. Utility Model Content

[0003] The purpose of this application is to overcome the above-mentioned technical problems and provide a welding fixture for the clear water tank of a high-speed train.

[0004] A welding fixture for a clean water tank in a high-speed train includes a positioning frame, which is square in shape. A fixing rod is installed inside the positioning frame, and both ends of the fixing rod are connected to the two symmetrical sides of the positioning frame. A stop bar is installed on the fixing rod, which is perpendicular to the fixing rod. The end of the stop bar away from the fixing rod is connected to the positioning frame, so that the stop bar, the positioning rod, and the positioning frame together form a groove for engaging the bottom of the clean water tank. A pad is installed at the four corners of the groove, and the pad is fixedly connected to the positioning frame, the stop bar, and the support rod, respectively. The pad is used to support the bottom of the clean water tank. By adopting the above technical solution, when using the water tank, the bottom and two symmetrical sides are folded over and snapped into the slots, so that the two sides abut against the inner wall of the positioning frame and the inner wall of the stop rod, respectively. The remaining two side plates are inserted into the fixing rod and the inner wall of the positioning frame on the side symmetrical to the fixing rod, thus completing the assembly of the bottom and four sides of the water tank. This facilitates welding at the joints of adjacent side plates and welding of the side plates and the bottom plate, achieving the positioning of the bottom plate and side plates of the clean water tank. Preferably, the fixing rod and the positioning frame symmetrical to the fixing rod are provided with multiple top material assemblies; the top material assembly includes a positioning seat connected to the fixing rod, a rotating shaft bolted to the positioning seat, a top rod rotatably connected to the rotating shaft, and a top material column threaded to the end of the top rod. By adopting the above technical solution, when the user uses the device, rotating the top rod causes the top material column to abut against the side wall of the side plate, thus positioning the side plate. The top material column is threadedly connected to the top rod, and the rotating shaft is rotatably connected to the top rod, facilitating adjustments to the welding positions of the side plate and the bottom plate, and allowing for fine-tuning of the top material column's position to accommodate water tanks of different sizes. Preferably, a guide rail is fixedly connected to the top of the positioning rod, and a guide rail with the same structure is provided on the symmetrical side of the positioning rod of the positioning frame. The positioning seat is slidably connected to the guide rail, and a bolt is threadedly connected to the positioning seat. By adopting the above technical solution, when the user uses the device, loosening the bolt allows the positioning seat to slide, which on the one hand allows for adjustments to the welding position, and on the other hand, limits the movement of water tanks of different sizes, allowing the positioning seat to slide to an appropriate position, making the initial shape of the side plate more uniform. Preferably, the fixing rod is slidably connected to the positioning rod, and the two ends of the stop rod are slidably connected to the side walls of the positioning rod and the positioning frame. By adopting the above technical solution, users can adjust the positions of the fixing rod and the stop rod, that is, adjust the size of the slot, and position water tanks of different sizes. This replaces the traditional method where one tooling can only process one size of water tank, increasing the flexibility of tooling use. Preferably, the positioning frame has symmetrical sidewalls with sliding grooves, and sliders are fixedly connected to both ends of the fixing rod. The sliders are slidably connected to the sliding grooves, and bolts are threaded onto the sliders. By adopting the above technical solution, users can loosen the bolts to slide the positioning rod, allowing it to slide within the positioning frame and the sliders to slide within the sliding grooves, making the positioning rod more stable during sliding.Preferably, sliding blocks are fixedly connected to both ends of the stop bar. A sliding groove is formed on the inner wall of the fixed rod and the positioning frame symmetrical to the fixed rod. The sliding blocks are slidably connected to the sliding grooves, and bolts are threaded onto the sliding blocks. By adopting the above technical solution, the user can loosen the bolts to slide the position of the stop bar, facilitating adjustment of the slot size. Preferably, the stop bar is a telescopic rod. By adopting the above technical solution, when the fixed rod slides, the position of the fixed rod relative to the positioning frame changes, requiring a change in the size of the stop bar. The stop bar is telescopic, allowing it to extend and retract with the sliding of the fixed rod. Preferably, the stop bar includes a positioning sleeve and a positioning rod. A telescopic rod is fixedly connected to one end of the positioning rod near the positioning sleeve, and the telescopic rod is slidably connected within the positioning sleeve. By adopting the above technical solution, when the fixed rod slides, it causes the positioning rod to slide along with the fixed rod, thereby causing the telescopic rod to slide within the telescopic sleeve. Attached Figure Description

[0005] Figure 1 This is a schematic diagram of the structure of the embodiment of this application and the clean water tank;

[0006] Figure 2 This is a structural schematic diagram of an embodiment of this application;

[0007] Figure 3 This is a cross-sectional view of an embodiment of this application.

[0008] Reference numerals in the attached drawings: 1. Positioning frame; 11. Slide groove; 12. Sliding groove; 2. Fixing rod; 21. Guide rail; 22. Sliding block; 3. Stop bar; 31. Sliding block; 32. Positioning sleeve; 33. Positioning rod; 34. Telescopic rod; 4. Pad; 5. Top material assembly; 51. Positioning seat; 52. Rotating shaft; 53. Top rod; 54. Top material column; 6. Clean water tank. Detailed Implementation

[0009] The following will be combined with the appendix Figure 1-3 The technical solutions in the embodiments of this utility model are clearly and completely described herein. The described embodiments are only possible technical implementations of this utility model and not all possible implementations. Those skilled in the art can obtain other embodiments in conjunction with the embodiments of this utility model without creative effort, and these embodiments are also within the protection scope of this utility model.

[0010] Example 1

[0011] This application provides a welding fixture for a high-speed train's fresh water tank, referring to... Figure 1 and Figure 2The system includes a positioning frame 1, a fixing rod 2, a stop rod 3, and a pad 4. The positioning frame 1 is square-shaped. The two ends of the fixing rod 2 are symmetrically connected to the two sides of the positioning frame 1. The stop rod 3 is perpendicular to the fixing rod 2, with its end furthest from the fixing rod 2 connected to the positioning frame 1. The stop rod 3, the fixing rod 2, and the two perpendicular sides of the positioning frame 1 together form a slot for engaging the bottom of the clean water tank 6. The pad 4 is located at the four corners of the slot and is fixedly connected to the positioning frame 1, the stop rod 3, and the support rod, respectively, to support the bottom of the clean water tank 6. This solution effectively solves the problem of welding and positioning the clean water tank 6.

[0012] Specifically, the positioning frame 1 includes four frame strips, which can be made of metal materials such as stainless steel or aluminum alloy, possessing good strength and corrosion resistance. The frame strips are connected and fixed together by bolts or welding to form an integral frame structure.

[0013] The pad 4 is made of wear-resistant rubber material with a thickness of 5mm, providing good cushioning performance. Pad 4 is fixed to the positioning frame 1, the stop bar 3, and the support rod with screws to ensure a stable installation. The surface of pad 4 is designed with anti-slip textures to increase friction and prevent the clean water tank 6 from sliding during positioning.

[0014] A top-feeding assembly 5 is provided on the top of the fixed rod 2 and the top of the positioning frame 1, which is symmetrical to the fixed rod 2. A guide rail 21 is fixedly connected to the top of the positioning rod 33. The positioning frame 1 is also provided with a guide rail 21 with the same structure on the symmetrical side of the positioning rod 33. The top-feeding assembly 5 includes a positioning seat 51 slidably connected to the guide rail 21. The positioning seat 51 is threadedly connected to the guide rail 21. A rotating shaft 52 is bolted to the positioning seat 51. A top rod 53 is rotatably connected to the rotating shaft 52. A top-feeding column 54 is threadedly connected to the end of the top rod 53. When in use, the user rotates the top rod 53 so that the top-feeding column 54 abuts against the side wall of the side plate to position the side plate. The top-feeding column 54 is threadedly connected to the top rod 53, and the rotating shaft 52 is rotatably connected to the top rod 53, which facilitates the adjustment of the welding position of the side plate and the bottom plate to accommodate water tanks 6 of different sizes. Loosening the bolts allows the positioning seat 51 to slide, which can make room for the welding position and limit the movement of water tanks of different sizes. Sliding the positioning seat 51 to the appropriate position makes the side plates more evenly arranged.

[0015] Specifically, the positioning seat 51 is made of cast iron, possessing high strength and wear resistance. The positioning seat 51 is fixed to the fixing rod 2 with bolts of standard M8 specification to ensure reliable connection. The rotating shaft 52 is made of high-precision bearing steel with an outer diameter of 20mm and a hardened surface for excellent wear resistance. The push rod 53 is made of stainless steel with a diameter of 15mm and a chrome-plated surface to increase corrosion resistance. The push rod 53 and the rotating shaft 52 are connected by a bearing for smooth rotation. The top column 54 is made of high-strength alloy steel with anti-slip textured ends to increase friction with the side plates.

[0016] The implementation principle of this embodiment is as follows: by adding the top material assembly 5, the accuracy and flexibility of the welding positioning of the clean water tank 6 are further improved. During use, the user can adjust the position of the top material column 54 according to actual needs, ensuring it precisely abuts against the side wall of the side plate, thus ensuring a tighter connection between the side plate and the bottom plate. Simultaneously, the threaded connection between the top material column 54 and the top rod 53, as well as the rotatable connection between the rotating shaft 52 and the top rod 53, allows the top material assembly 5 to be flexibly adjusted to adapt to clean water tanks 6 of different sizes and shapes, thereby significantly improving the applicability and work efficiency of the welding fixture.

[0017] Example 2

[0018] The difference between this embodiment and Embodiment 1 above is that, referring to... Figure 2 and Figure 3 The fixing rod 2 is slidably connected to the positioning rod 33, and the two ends of the stop rod 3 are slidably connected to the side wall of the positioning rod 33 and the positioning frame 1. When using the tool, the user can adjust the position of the fixing rod 2 and the stop rod 3, that is, adjust the size of the slot, and can position clean water tanks 6 of different sizes, instead of the traditional tooling that can only process one size of clean water tank 6, increasing the flexibility of tooling use.

[0019] Specifically, the positioning frame 1 has a sliding groove 11 on the side wall corresponding to the fixed rod 2. Slider blocks 22 are fixedly connected to both ends of the fixed rod 2, and the sliders 22 are slidably connected within the sliding groove 11. The sliders 22 are made of wear-resistant engineering plastic and have good self-lubricating properties. Threaded holes are provided on the sliders 22 for fixing with bolts. A sliding groove 12 is provided on the opposite side of the fixed rod 2 and the positioning frame 1. Sliding blocks 31 are provided at both ends of the stop rod 3, and the sliding blocks 31 are slidably connected within the sliding groove 12. The sliding blocks 31 are fixed to the stop rod 3 with bolts, and ball bearings are provided on the sliding blocks 31 to reduce sliding resistance. The sliding groove 12 is designed as a dovetail groove structure to prevent the sliders 22 from dislodging.

[0020] The stop lever 3 is designed as a telescopic rod 34, including a positioning sleeve 32 and a positioning rod 33. The telescopic rod 34 is fixedly connected to one end of the positioning rod 33 near the positioning sleeve 32, and the telescopic rod 34 is slidably connected inside the positioning sleeve 32. When the user uses it, when the fixed rod 2 slides, it causes the positioning rod 33 to slide along with the fixed rod 2, thereby causing the telescopic rod 34 to slide inside the telescopic sleeve.

[0021] The implementation principle of this embodiment is as follows: By adding a sliding structure, the welding fixture achieves multi-functionality and flexibility. Users can adjust the positions of the fixing rod 2 and the stop rod 3 according to actual needs, making the size of the slot adaptable to different specifications of the clean water tank 6, thereby significantly improving the applicability of the welding fixture. The sliding structure design not only simplifies the operation process but also improves the positioning accuracy, providing a more reliable welding positioning solution for clean water tanks 6 of different sizes and shapes. The addition of a telescopic structure further enhances the flexibility and adaptability of the welding fixture. Users can adjust the length of the stop rod 3 according to actual needs, making the size of the slot adaptable to different specifications of the clean water tank 6, thereby significantly improving the applicability of the welding fixture. The telescopic structure design not only simplifies the operation process but also improves the positioning accuracy, providing a more reliable welding positioning solution for clean water tanks 6 of different sizes and shapes. The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made based on the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A welding tool for a motor train unit fresh water tank, characterized in that: The utility model provides a kind of water tank fixing device, including positioning frame (1), positioning frame (1) is squarely arranged, fixed rod (2) is arranged in the positioning frame (1), the both ends of fixed rod (2) are connected with the two sides of positioning frame symmetrically, stop rod (3) is arranged on fixed rod (2), stop rod (3) is perpendicular to fixed rod (2) and is arranged, the end of stop rod (3) away from fixed rod (2) is connected to positioning frame (1), so that stop rod (3), positioning rod (33) and the adjacent between positioning frame (1) form the clamping groove of the bottom of clean water tank (6), the four corners of clamping groove are provided with backing plate (4), backing plate (4) is fixedly connected to positioning frame (1), stop rod (3) and support rod respectively, and backing plate (4) is used to support the bottom of clean water tank (6).

2. The welding tooling for a water tank of a motor train unit according to claim 1, characterized in that: The fixed rod (2) and the positioning frame (1) symmetric with the fixed rod (2) are provided with a plurality of material pushing assemblies (5); the material pushing assembly (5) includes a positioning seat (51) connected to the fixed rod (2), a rotating shaft (52) is bolted on the positioning seat (51), a jacking rod (53) is rotatably connected to the rotating shaft (52), and an end of the jacking rod (53) is threadedly connected with a material pushing column (54).

3. The welding tooling for a water tank of a motor train unit according to claim 1, characterized in that: The top of the positioning rod (33) is fixedly connected with a guide rail (21), the positioning frame (1) located on the symmetric side of the positioning rod (33) is provided with a guide rail (21) with the same structure, the positioning seat (51) is slidably connected to the guide rail (21), and a bolt is threadedly connected to the positioning seat (51).

4. The welding tooling for a water tank of a motor train unit according to claim 1, characterized in that: The fixed rod (2) is slidably connected to the positioning rod (33), and the ends of the stop rod (3) are slidably connected to the positioning rod (33) and the side wall of the positioning frame (1).

5. The welding tooling for a water tank of a motor train unit according to claim 4, characterized in that: The symmetric side walls of the positioning frame (1) are provided with sliding grooves (11), and the both ends of the fixed rod (2) are fixedly connected with sliding blocks (22) which are slidably connected in the sliding grooves (11).

6. The welding tooling for a water tank of a motor train unit according to claim 4, characterized in that: The both ends of the stop rod (3) are fixedly connected with sliding blocks (31), and the inner walls of the fixed rod (2) and the positioning frame (1) symmetric with the fixed rod (2) are provided with sliding grooves (12), the sliding blocks (31) are slidably connected in the sliding grooves (12), and a bolt is threadedly connected to the sliding blocks (31).

7. The welding tooling for a water tank of a motor train unit according to claim 4, characterized in that: The stop rod (3) is a telescopic rod (34).

8. The welding tooling for a water tank of a motor train unit according to claim 7, characterized in that: The stop rod (3) includes a positioning sleeve (32) and a positioning rod (33), one end of the positioning rod (33) close to the positioning sleeve (32) is fixedly connected with a telescopic rod (34), and the telescopic rod (34) is slidably connected in the positioning sleeve (32).

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