Welding device for thrust air bearing of hydrogen fuel cell air compressor

Abstract

The utility model relates to the technical field of hydrogen fuel cell air compressors, and discloses a hydrogen fuel cell air compressor thrust air bearing welding device which comprises a welding device base, a thrust air bearing bottom plate, a thrust air bearing top foil and a welding device pressing plate. The thrust air bearing top foil is arranged at the welding position of the thrust air bearing bottom plate, the welding device pressing plate is installed on the thrust air bearing top foil in a pressing mode, a plurality of welding holes are formed in the welding device pressing plate, and the welding holes are aligned with the welding position of the thrust air bearing top foil. The thrust air bearing top foil is pressed through the pressing plate of the welding device, the thrust air bearing top foil is free of deformation in the welding process, pressing is firm, virtual welding is avoided, the problem that parts are scrapped is solved, automatic welding can be achieved, and welding efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen fuel cell air compressors, in particular to a thrust air-floating bearing welding device for a hydrogen fuel cell air compressor. Background Art

[0002] As one of the core components of the fuel cell system, the air compressor is responsible for delivering the oxygen required for a specific pressure and flow rate to the fuel cell stack, and meets various requirements such as high efficiency, small size, oil-free, large working flow and pressure range, low noise, resistance to vibration and shock, and fast dynamic response. To meet the above requirements, the thrust air bearing plays an important role in preventing the axial movement of the thrust plate and enabling the air compressor to operate stably.

[0003] The thrust air bearing is composed of a bottom plate and 8 top foils welded together. When welding the top foil, a single top foil is placed on the bottom plate and manually pressed to weld. One top foil needs to be welded at 6 points to be fixed on the bearing bottom plate, so each thrust bearing needs to be welded at 48 points. However, the shape of the top foil is Figure 1 It is fan-shaped, thin and light, and can be easily deformed by manual press welding. If the top foil is not pressed firmly during welding, it is easy to produce cold welding, causing the entire thrust bearing to be scrapped, and the welding efficiency is low. Utility Model Content

[0004] The technical problem to be solved by the utility model is that the existing thrust bearings are inconvenient to weld, easy to deform and have low efficiency.

[0005] In order to solve the above technical problems, the technical solution of the utility model is to provide a hydrogen fuel cell air compressor thrust air bearing welding device, including a welding device base, a thrust air bearing bottom plate, a thrust air bearing top foil and a welding device pressure plate, the thrust air bearing bottom plate is placed on the welding device base and fastened, the thrust air bearing top foil is arranged on the welding position of the thrust air bearing bottom plate, the welding device pressure plate is pressed on the thrust air bearing top foil, and a plurality of welding holes are provided on the welding device pressure plate, and the welding holes are aligned with the welding positions on the thrust air bearing top foil.

[0006] Optionally, the welding device base and the thrust air bearing bottom plate are both provided with a plurality of positioning pin holes, a first positioning pin is provided in each of the positioning pin holes, and the thrust air bearing bottom plate is fixed to the welding device base via the first positioning pin.

[0007] Optionally, mounting grooves are provided at both ends of the welding device pressure plate, and a welding device base threaded hole is provided on the welding device base. The mounting groove is aligned with the welding device base threaded hole, and a screw is provided in the welding device base threaded hole, so that the welding device pressure plate is fastened to the welding device base and pressed above the top foil of the thrust air bearing.

[0008] Optionally, a pressure plate positioning hole is provided on the pressure plate of the welding device, a second positioning pin is provided on the base of the welding device, and the pressure plate positioning hole is sleeved on the second positioning pin.

[0009] In summary, the utility model presses the top foil of the thrust air bearing through the welding device pressure plate. During the welding process, the top foil of the thrust air bearing is not deformed and is pressed firmly, so that false welding will not occur, the problem of scrapped parts is reduced, and automatic welding can be performed, thereby effectively improving welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A schematic diagram of the top foil structure of the thrust air bearing;

[0011] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0012] Figure 3 It is an enlarged schematic diagram of the welding device pressure plate;

[0013] In the figure: 1. welding device base; 2. thrust air bearing bottom plate; 3. positioning pin hole; 4. pressure plate positioning hole; 5. thrust air bearing top foil; 6. welding device pressure plate; 7. welding device base threaded hole; 8. welding hole. DETAILED DESCRIPTION

[0014] The following combination Figure 1-3 The utility model is described in further detail.

[0015] The utility model discloses a hydrogen fuel cell air compressor thrust bearing welding device, referring to Figure 2 and Figure 3 , including a welding device base 1, a thrust air bearing bottom plate 2, a thrust air bearing top foil 5 and a welding device pressure plate 6, the welding device base 1 and the thrust air bearing bottom plate 2 are both provided with a plurality of positioning pin holes 3, a first positioning pin is provided in the positioning pin hole 3, the thrust air bearing bottom plate 2 is fixed to the welding device base 1 through the first positioning pin, the thrust air bearing top foil 5 is provided at the welding position of the thrust air bearing bottom plate 2, mounting grooves are provided at both ends of the welding device pressure plate 6, and a welding device base threaded hole is provided on the welding device base 1 7, the mounting groove is aligned with the threaded hole 7 of the welding device base, and a screw is provided in the threaded hole 7 of the welding device base, the welding device pressure plate 6 is fastened to the welding device base 1, and is pressed onto the top foil 5 of the thrust air bearing, a plurality of welding holes 8 are provided on the welding device pressure plate 6, the welding holes 8 are aligned with the welding positions on the top foil 5 of the thrust air bearing, a pressure plate positioning hole 4 is provided on the welding device pressure plate 6, a second positioning pin is provided on the welding device base 1, and the pressure plate positioning hole 4 is sleeved on the second positioning pin for positioning the welding device pressure plate 6.

[0016] Example

[0017] In this embodiment, refer to Figure 2 , install the first locating pin in the locating pin hole 3 of the welding device base 1 and the thrust air bearing bottom plate 2, fix the thrust air bearing bottom plate 2 on the welding device base 1, integrate the thrust air bearing bottom plate 2 with the welding device base 1, and then place the thrust air bearing top foil 5 on the welding position on the thrust air bearing bottom plate 2, and then align the pressure plate locating hole 4 of the welding device pressure plate 6 with the second locating pin of the welding device base 1, and press the welding device pressure plate 6 on top of the thrust air bearing top foil 5, and use screws to fasten the welding device pressure plate 6 to the threaded hole 7 of the welding device base;

[0018] According to the above operation, all eight thrust air bearing top foils 5 are pressed onto the welding device, and then the welding device is moved to the welding machine workbench, and each top foil is automatically welded through the six welding holes 8 on the pressure plate of each welding device.

[0019] The utility model presses the thrust air bearing top foil 5 through the welding device pressing plate 6. During the welding process, the thrust air bearing top foil 5 is not deformed and is pressed firmly, so that false welding will not occur, the problem of scrapped parts is reduced, and automatic welding can be performed, thereby effectively improving welding efficiency.

[0020] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A hydrogen fuel cell air compressor thrust bearing welding device, characterized in that: The invention comprises a welding device base (1), a thrust air bearing bottom plate (2), a thrust air bearing top foil (5) and a welding device pressure plate (6), wherein the thrust air bearing bottom plate (2) is placed on the welding device base (1) and fastened, the thrust air bearing top foil (5) is arranged at a welding position of the thrust air bearing bottom plate (2), the welding device pressure plate (6) is pressed onto the thrust air bearing top foil (5), and a plurality of welding holes (8) are arranged on the welding device pressure plate (6), and the welding holes (8) are aligned with welding positions on the thrust air bearing top foil (5).

2. The hydrogen fuel cell air compressor thrust air bearing welding device according to claim 1 is characterized in that: The welding device base (1) and the thrust air bearing base plate (2) are both provided with a plurality of positioning pin holes (3), a first positioning pin is provided in the positioning pin hole (3), and the thrust air bearing base plate (2) is fixed to the welding device base (1) via the first positioning pin.

3. The hydrogen fuel cell air compressor thrust air bearing welding device according to claim 1 is characterized in that: The welding device pressure plate (6) is provided with mounting grooves at both ends, and the welding device base (1) is provided with a welding device base threaded hole (7). The mounting groove is aligned with the welding device base threaded hole (7), and a screw is provided in the welding device base threaded hole (7). The welding device pressure plate (6) is fastened to the welding device base (1) and is pressed onto the top foil (5) of the thrust air bearing.

4. The hydrogen fuel cell air compressor thrust bearing welding device according to claim 3 is characterized in that: The welding device pressure plate (6) is provided with a pressure plate positioning hole (4), the welding device base (1) is provided with a second positioning pin, and the pressure plate positioning hole (4) is sleeved on the second positioning pin.

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