Unmanned aerial vehicle engine exhaust pipe base welding air tightness detection tooling

Abstract

The utility model relates to an unmanned plane engine technology field, especially an unmanned plane engine exhaust pipe base welding air tightness detection tool, including the bottom plate, the both ends of bottom plate are provided with the support shaft, be provided with the limit block on the bottom plate, the middle part of support shaft is provided with the pressing plate, the upper end of support shaft is provided with the top plate, the upper end of pressing plate is provided with the cylinder, the lower end of pressing plate is provided with the taper air nozzle that is compatible with exhaust pipe, the taper air nozzle is connected with outside gas source through the air pipe, the upper end of limit block is provided with silica gel pad fixed plate through the guide shaft, be provided with exhaust pipe base on silica gel pad fixed plate, and the exhaust pipe upper port of exhaust pipe base corresponds with the setting of taper air nozzle, the utility model discloses can detect the welding air tightness of multiple unmanned plane engine exhaust pipe base simultaneously, avoids the detection error caused by the exhaust pipe base leakage simultaneously, has the positive effect of improving the detection efficiency, improves the detection accuracy.

Description

Technical Field

[0001] This utility model relates to the field of unmanned aerial vehicle (UAV) engine technology, and in particular to a tooling for testing the airtightness of the welded exhaust pipe base of an UAV engine. Background Technology

[0002] When a drone engine is running, the exhaust gases produced by combustion are discharged through the exhaust pipe. For example... Figure 4 As shown, the bottom of the exhaust pipe is welded to the base. To test the airtightness of the exhaust pipe base weld, air needs to be filled into the exhaust pipe, and then the welded area of ​​the exhaust pipe base needs to be placed in water. Air is then added back into the exhaust pipe, and the presence of bubbles at the welded area is observed to determine the airtightness of the exhaust pipe base weld. This testing method can only test one drone engine exhaust pipe base at a time, resulting in low testing efficiency and potential testing errors. Utility Model Content

[0003] The purpose of this utility model is to provide a tooling for testing the weld airtightness of the exhaust pipe base of a drone engine, so as to achieve the goal of testing the weld airtightness of multiple drone engine exhaust pipe bases at one time, improving testing efficiency, avoiding testing errors, and improving testing accuracy.

[0004] The utility model provides a welding airtightness testing fixture for the exhaust pipe base of a drone engine, including a base plate with support shafts at both ends and limit blocks on the base plate. A pressure plate is provided in the middle of the support shafts, and a top plate is provided at the upper end of the support shafts. A cylinder is provided at the upper end of the pressure plate, and a tapered nozzle adapted to the exhaust pipe is provided at the lower end of the pressure plate. The tapered nozzle is connected to an external air source through an air pipe. A silicone pad fixing plate is provided at the upper end of the limit block through a guide shaft. An exhaust pipe base is provided on the silicone pad fixing plate, and the upper port of the exhaust pipe of the exhaust pipe base is correspondingly set with the tapered nozzle.

[0005] Furthermore, a silicone pad is provided on the silicone pad fixing plate, and an exhaust pipe base is provided on the silicone pad.

[0006] Furthermore, a spring is provided on the guide shaft, and the spring is located at the bottom of the silicone pad fixing plate; a stop block is provided at the top of the guide shaft, and the stop block is located above the silicone pad.

[0007] Furthermore, bearings are provided at both ends of the pressure plate, and the pressure plate is connected to the support shaft through the bearings.

[0008] Furthermore, a cylinder fixing block is provided at the lower end of the top plate, and a cylinder is mounted on the top plate through the cylinder fixing block.

[0009] Furthermore, a stop ring is provided on the support shaft, and the stop ring is located above and below the top plate.

[0010] Furthermore, the tapered air nozzle is connected to a foot switch via an air pipe.

[0011] The fixture for testing the airtightness of the welded exhaust pipe base of the UAV engine provided by this utility model has the following advantages:

[0012] 1. This utility model features a silicone pad fixing plate with multiple exhaust pipe bases and corresponding tapered air nozzles. The lower half of the base plate, limiting block, and guide shaft are placed in water, and the multiple exhaust pipe bases are placed sequentially on the silicone pad fixing plate. A pressure plate presses down on the exhaust pipe bases and moves them downwards until the weld joint of the exhaust pipe base is completely submerged in water. Gas is injected into the exhaust pipe base through the tapered air nozzles, and the presence of air bubbles at the weld joint is observed to determine the airtightness of the exhaust pipe base weld.

[0013] 2. The tapered nozzle of this utility model blocks the exhaust pipe to prevent air leakage, and the pressure plate presses the exhaust pipe base tightly onto the silicone pad fixing plate and silicone pad, thus preventing air leakage from the exhaust pipe base and effectively avoiding detection errors.

[0014] Therefore, this utility model can test the weld airtightness of multiple drone engine exhaust pipe bases at one time, while avoiding testing errors caused by air leakage from the exhaust pipe base, thus improving testing efficiency and accuracy. Attached Figure Description

[0015] The accompanying drawings disclose specific embodiments of this utility model, wherein,

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a diagram showing the exhaust pipe of this utility model in an uninflated state.

[0018] Figure 3 This is a diagram showing the state of the exhaust pipe being filled with air according to this utility model;

[0019] Figure 4 This is a structural schematic diagram of the exhaust pipe base of this utility model;

[0020] Figure label:

[0021] 1. Base plate; 11. Support shaft; 12. Limiting block; 13. Guide shaft; 14. Stop block;

[0022] 2. Pressure plate; 21. Bearing;

[0023] 3. Top plate; 31. Cylinder fixing block; 32. Stop ring;

[0024] 4. Cylinder; 41. Tapered nozzle; 42. Air pipe; 43. Foot switch;

[0025] 5. Silicone pad fixing plate; 51. Silicone pad;

[0026] 6. Exhaust pipe base; 61. Exhaust pipe base weld. Detailed Implementation

[0027] like Figure 1-3 As shown, the UAV engine exhaust pipe base welding airtightness testing fixture provided by this utility model includes a base plate 1, with support shafts 11 at both ends of the base plate 1, a limit block 12 on the base plate 1, a pressure plate 2 in the middle of the support shafts 11, and a top plate 3 at the upper end of the support shafts 11; a cylinder 4 is provided at the upper end of the pressure plate 2, and a tapered nozzle 41 adapted to the exhaust pipe is provided at the lower end of the pressure plate 2; the tapered nozzle 41 is connected to an external air source through an air pipe 42; a silicone pad fixing plate 5 is provided at the upper end of the limit block 12 through a guide shaft 13; an exhaust pipe base 6 is provided on the silicone pad fixing plate 5, and the upper port of the exhaust pipe of the exhaust pipe base 6 is correspondingly set with the tapered nozzle 41.

[0028] like Figure 2-3 As shown, in use, the lower half of the base plate 1, the limiting block 12, and the guide shaft 13 are first placed in water. Multiple exhaust pipe bases 6 are then placed sequentially on the silicone pad fixing plate 5, with the tapered nozzle 41 positioned above the exhaust pipe opening. Next, the cylinder 4 is activated, causing the pressure plate 2 to move downwards. The tapered nozzle 41 blocks the exhaust pipe, sealing the exhaust pipe base 6 to prevent air leakage. Then, the tapered nozzle 41 presses the upper part of the exhaust pipe base 6 tightly, and the pressure plate 2 presses the exhaust pipe base 6 downwards along the guide shaft 13, pressing it down until it stops at the limiting block 12. At this point, the exhaust pipe base weld 61 is completely submerged in water. Finally, an external air source is introduced into the exhaust pipe base 6 through the air pipe 42 and the tapered nozzle 41. The air is then observed to determine the airtightness of the exhaust pipe base weld 61. This testing method can test multiple exhaust pipe bases 6 at once, and the pressure plate 2 tightly presses against the upper end of the exhaust pipe base 6 to prevent air leakage from the exhaust pipe base 6 and effectively avoid testing errors.

[0029] like Figure 1-3 As shown, a silicone pad 51 is provided on the silicone pad fixing plate 5, and an exhaust pipe base 6 is provided on the silicone pad 51. When the cylinder 4 is activated, the cylinder 4 drives the pressure plate 2 to move downward, pressing the exhaust pipe base 6 tightly onto the silicone pad 51. The silicone pad 51 can seal the bottom of the exhaust pipe base 6, preventing air leakage from the exhaust pipe base 6 from affecting the airtightness test of the exhaust pipe base welding, and improving the accuracy of the test.

[0030] like Figure 1-3As shown, a spring is installed on the guide shaft 13, and the spring is located at the bottom of the silicone pad fixing plate 5; a stop block 14 is installed at the top of the guide shaft 13, and the stop block 14 is located above the silicone pad 51. After the airtightness test of the drone engine exhaust pipe base welding is completed, the cylinder 4 drives the pressure plate 2 to move upward, and the spring causes the silicone pad fixing plate 5 to move upward, returning the silicone pad fixing plate 5 to the state where the exhaust pipe is not inflated. The stop block 14 can prevent the silicone pad fixing plate 5 from moving off the guide shaft 13 and falling off, improving practicality and convenience.

[0031] like Figure 1 As shown, bearings 21 are provided at both ends of the pressure plate 2, and the pressure plate 2 is connected to the support shaft 11 through the bearings 21. The bearings 21 facilitate the cylinder 4 to drive the pressure plate 2 to move upward or downward, which is convenient for the airtightness test of the exhaust pipe base welding.

[0032] like Figure 1 As shown, a cylinder fixing block 31 is provided at the lower end of the top plate 3, and a cylinder 4 is mounted on the top plate 3 via the cylinder fixing block 31. The cylinder fixing block 31 facilitates the fixing of the cylinder 4, so that the upper end of the cylinder 4 is fixed on the top plate 3, and the lower end of the cylinder 4 is set on the pressure plate 2, which facilitates the airtightness test of the exhaust pipe base welding.

[0033] like Figure 1-3 As shown, a stop ring 32 is provided on the support shaft 11, and the stop ring 32 is located above the top plate 3. The stop ring 32 facilitates the fixing of the top plate 3 and prevents the top plate 3 from shifting.

[0034] like Figure 1 As shown, the tapered air nozzle 41 is connected to the foot switch 43 via the air pipe 42. The tapered air nozzle 41 presses the upper part of the exhaust pipe base 6 tightly, and the cylinder 4 presses down to make the exhaust pipe base 6 press firmly on the silicone pad 51 to prevent air leakage. Then, they are pressed down together until they stop at the limit block 12. At this time, the other foot turns on the foot switch 43 to inflate the air. Observe whether bubbles are coming out of the weld 61 of the exhaust pipe base to determine the airtightness of the exhaust pipe base weld.

[0035] The technical solution of this utility model is not limited to the scope of this utility model. All technical contents not described in detail in this utility model are known technologies.

Claims

1. A fixture for testing the airtightness of the exhaust pipe base of a UAV engine, comprising a base plate (1), characterized in that, The base plate (1) is provided with support shafts (11) at both ends, and limit blocks (12) are provided on the base plate (1); a pressure plate (2) is provided in the middle of the support shaft (11), and a top plate (3) is provided at the upper end of the support shaft (11); a cylinder (4) is provided at the upper end of the pressure plate (2), and a tapered nozzle (41) adapted to the exhaust pipe is provided at the lower end of the pressure plate (2); the tapered nozzle (41) is connected to an external air source through an air pipe (42); a silicone pad fixing plate (5) is provided at the upper end of the limit block (12) through a guide shaft (13); an exhaust pipe base (6) is provided on the silicone pad fixing plate (5), and the upper port of the exhaust pipe of the exhaust pipe base (6) is correspondingly set with the tapered nozzle (41).

2. The fixture for testing the welded airtightness of the UAV engine exhaust pipe base according to claim 1, characterized in that, The silicone pad fixing plate (5) is provided with a silicone pad (51), and the silicone pad (51) is provided with an exhaust pipe base (6).

3. The fixture for testing the welded airtightness of the UAV engine exhaust pipe base according to claim 2, characterized in that, A spring is provided on the guide shaft (13), and the spring is located at the bottom of the silicone pad fixing plate (5); a stop block (14) is provided at the top of the guide shaft (13), and the stop block (14) is located above the silicone pad (51).

4. The fixture for testing the welded airtightness of the UAV engine exhaust pipe base according to claim 1, characterized in that, The pressure plate (2) is provided with bearings (21) at both ends, and the pressure plate (2) is connected to the support shaft (11) through the bearings (21).

5. The fixture for testing the welded airtightness of the UAV engine exhaust pipe base according to claim 1, characterized in that, The lower end of the top plate (3) is provided with a cylinder fixing block (31), and the top plate (3) is provided with a cylinder (4) through the cylinder fixing block (31).

6. The fixture for testing the welded airtightness of the UAV engine exhaust pipe base according to claim 1, characterized in that, A stop ring (32) is provided on the support shaft (11), and the stop ring (32) is located above and below the top plate (3).

7. The fixture for testing the welded airtightness of the UAV engine exhaust pipe base according to claim 1, characterized in that, The tapered air nozzle (41) is connected to the foot switch (43) via an air pipe (42).

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