Test clamp suitable for multi-model airplane valves

Abstract

The utility model provides a test fixture suitable for multi-model airplane valves, which relates to the field of airplane outflow valve testing and comprises a first fixing part connected with a testing tool, a second fixing part connected with another testing tool, a first sleeve sleeved on the first fixing part and a second sleeve sleeved on the second fixing part. One end of the valve is connected with the first sleeve, and the other end of the valve is connected with the second sleeve; the first sleeve is in sliding fit with the first fixing part, the second sleeve is in threaded fit with the second fixing part, the valve fixing device can be matched with a plurality of valves with different lengths and models, specifically, the second sleeve rotates relative to the second pipe, or the first sleeve slides relative to the first pipe, and the distance between the second sleeve and the first sleeve is adjusted; the size of the valve to be tested is adapted, and the valve is fixed by the clamp after the size is clear.

Description

Technical Field

[0001] The utility model relates to the field of aircraft outflow valve testing, in particular to a test fixture suitable for valves of aircraft of various models. Background Art

[0002] The airtightness test of the aircraft outflow valve requires the valve body to be fixed between two large test fixtures. Such test fixtures are large in size and have a constant spacing. When it comes to testing, different types of valves (of different lengths) require corresponding special fixtures to be combined with the test fixtures. The fixing process is complicated, and multiple types of valves cannot be fixed with one fixture, so the scope of application is narrow. Utility Model Content

[0003] The utility model aims to provide a test fixture suitable for valves of various types of aircraft to solve the above technical problems.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A test fixture adapted for valves of multiple aircraft models, comprising a first fixing part connected to a test fixture, a second fixing part connected to another test fixture, a first sleeve for entrapping the first fixing part, and a second sleeve for entrapping the second fixing part;

[0006] It also includes a valve connected to the first sleeve at one end and connected to the second sleeve at the other end;

[0007] The first sleeve is slidably matched with the first fixing part, and the second sleeve is threadedly matched with the second fixing part. When the second sleeve rotates relative to the second fixing part or the first sleeve slides relative to the first fixing part, the distance between the first sleeve and the second sleeve increases or decreases to adapt to the length of the valve.

[0008] Preferably, the first sleeve and the first fixing portion have a sealed sliding fit, and the second sleeve and the second fixing portion have a sealed threaded fit.

[0009] Preferably, the first fixing portion includes a first tube entering into the first sleeve, and a first sealing ring trapped on the periphery of the first tube and in contact with the tube wall of the first sleeve.

[0010] Preferably, the second fixing portion comprises a second tube screwed into the second sleeve, and a second sealing ring looped around the periphery of the second tube and in contact with the tube wall of the second sleeve.

[0011] Preferably, the valve is equipped with two clamps, one of which clamps clamps the valve and the port of the first sleeve so that the valve and the first sleeve are tightly combined, and the other clamp clamps the valve and the port of the second sleeve so that the valve and the second sleeve are tightly combined.

[0012] Preferably, the first sleeve and the second sleeve have a butt joint portion combined with the valve, and the butt joint portion is a hoop portion of a clamp.

[0013] Preferably, the first pipe is provided with a first flange fixedly coupled to the test fixture.

[0014] Preferably, the second pipe is provided with a second flange fixedly coupled to another test fixture.

[0015] The beneficial effects of the utility model are:

[0016] 1. The utility model can be adapted to multiple valves of different lengths and models. Specifically, the second sleeve is rotated relative to the second tube, or the first sleeve is slid relative to the first tube, and the distance between the second sleeve and the first sleeve is adjusted to adapt to the size of the valve to be tested. After the size is determined, it is fixed by a clamp.

[0017] 2. The utility model can also adjust the relative position of the valve between the two test fixtures by rotating the second sleeve relative to the second tube after the valve is fixed to the first sleeve and the second sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure is a schematic diagram of the structure of a test fixture suitable for valves of various aircraft models;

[0019] Figure 2 for Figure 1 A schematic diagram of the structure under a reverse perspective;

[0020] Figure 3 for Figure 2 Exploded view of the test fixture shown;

[0021] Figure 4 is a schematic structural diagram of the second fixing part;

[0022] Figure numerals: 1. first tube; 2. first flange; 3. first sleeve; 4. clamp; 5. valve; 6. second sleeve; 7. second flange; 8. second tube; 9. docking part; 10. first sealing ring; 11. second sealing ring. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments and drawings, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the protection scope of the present invention.

[0024] The specific embodiments of the present utility model are described below in conjunction with the accompanying drawings.

[0025] Example 1

[0026] In this embodiment, a test fixture suitable for valves of multiple aircraft models is proposed. Figure 1-Figure 4 The test fixture suitable for valves of multiple types of aircraft includes a first fixing part connected to a test fixture, a second fixing part connected to another test fixture; and a first sleeve 3 for encircling the first fixing part and a second sleeve 6 for encircling the second fixing part.

[0027] For further instructions, see Figure 3 The first fixing part includes a first tube 1 entering the first sleeve 3, a first sealing ring 10 trapped outside the first tube 1 and in contact with the tube wall of the first sleeve 3, and a first flange 2 located at the outward end of the first tube 1 and fixedly combined with the test fixture.

[0028] See also Figure 3 and Figure 4 The second fixing part includes a second tube 8 screwed into the second sleeve 6, a second sealing ring 11 trapped outside the second tube 8 and in contact with the tube wall of the second sleeve 6, and a second flange 7 located at the outward end of the second tube 8 and fixedly combined with another test work.

[0029] In this embodiment, the surface of the first tube 1 is smooth, and there are two annular grooves on the outer wall of the first tube 1. The above-mentioned first sealing ring 10 is embedded in the annular grooves. In this way, the first tube 1 contacts the inner wall of the first sleeve 3 with the help of the two first sealing rings 10, and then has a sealed sliding fit with the first sleeve 3.

[0030] In this embodiment, the surface of the second tube 8 is threaded, and the inner wall of the second sleeve 6 is threaded. In this way, the second tube 8 can be screwed into the second sleeve 6 based on the threaded fit. Consistent with the first tube 1, the outer wall of the first tube 1 has two annular grooves, and the above-mentioned second sealing ring 11 is embedded in the annular grooves. Accordingly, the two second sealing rings 11 are in contact with the area in the second sleeve 6 where no threads are set, so that the second tube 8 and the second sleeve 6 have a sealed threaded fit.

[0031] See also Figure 1-Figure 3 The valve 5 is located between the first sleeve 3 and the second sleeve 6. Specifically, the first sleeve 3 and the second sleeve 6 are provided with a docking portion 9 at the ends facing the valve 5. The docking portion 9 is combined with the port of the valve 5. After the combination, the valve 5 can be integrated into a whole with the first sleeve 3 and the second sleeve 6 by means of a clamp 4 around the joint.

[0032] The core of this embodiment is to adapt to multiple valves 5 of different lengths and models. Specifically, the second sleeve 6 rotates relative to the second tube 8, or the first sleeve 3 slides relative to the first tube 1, and the distance from the second sleeve 6 to the first sleeve 3 is adjusted to adapt to the size of the valve 5 to be tested. After the size is determined, it can be fixed by the above-mentioned clamp 4.

[0033] In this embodiment, after the valve 5 is fixed to the first sleeve 3 and the second sleeve 6, the second sleeve 6 can be rotated relative to the second tube 8 to adjust the relative position of the valve 5 to the two test fixtures.

[0034] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A test fixture for valves of various aircraft types, characterized by: It includes a first fixing part connected to a test fixture, a second fixing part connected to another test fixture, a first sleeve for entrapping the first fixing part, and a second sleeve for entrapping the second fixing part; It also includes a valve connected to the first sleeve at one end and connected to the second sleeve at the other end; The first sleeve is slidably matched with the first fixing part, and the second sleeve is threadedly matched with the second fixing part. When the second sleeve rotates relative to the second fixing part or the first sleeve slides relative to the first fixing part, the distance between the first sleeve and the second sleeve increases or decreases to adapt to the length of the valve.

2. A test fixture for valves of multiple aircraft types according to claim 1, characterized in that: The first sleeve and the first fixing part have a sealed sliding fit, and the second sleeve and the second fixing part have a sealed thread fit.

3. A test fixture for valves of multiple aircraft types according to claim 2, characterized in that: The first fixing part includes a first tube entering into the first sleeve, and a first sealing ring trapped on the outer periphery of the first tube and in contact with the tube wall of the first sleeve.

4. A test fixture for valves of multiple aircraft types according to claim 2, characterized in that: The second fixing part comprises a second tube screwed into the second sleeve, and a second sealing ring looped around the outer periphery of the second tube and in contact with the tube wall of the second sleeve.

5. The test fixture for valves of multiple aircraft types according to claim 1, characterized in that: The valve is equipped with two clamps, one of which is used to clamp the valve and the port of the first sleeve so that the valve and the first sleeve are tightly combined, and the other clamp is used to clamp the valve and the port of the second sleeve so that the valve and the second sleeve are tightly combined.

6. A test fixture for valves of multiple aircraft types according to claim 5, characterized in that: The first sleeve and the second sleeve have a butt joint portion combined with the valve, and the butt joint portion is a hoop portion of a clamp.

7. A test fixture for valves of multiple aircraft types according to claim 3, characterized in that: The first pipe is provided with a first flange fixedly coupled to the test fixture.

8. A test fixture for valves of multiple aircraft types according to claim 4, characterized in that: The second tube is provided with a second flange fixedly coupled to another test fixture.

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