Aircraft engine part radian detection device

Abstract

The utility model discloses an aero-engine part radian detection device, which comprises a detection plate, one side edge of the detection plate is a bent detection part matched with the arc-shaped outer wall of a part, and a positioning notch used for being clamped on a flange of the part is arranged on the detection plate in a penetrating manner. The cross section of the detection part is semicircular, the contact between the detection part and the arc-shaped outer wall of the part is linear contact, when the part meets the standard, the detection part is attached to the arc-shaped outer wall of the part, when the part does not meet the standard, a gap is formed between the detection part and the arc-shaped outer wall of the part, the operation is simple and convenient, the detection device is small in size, low in cost and convenient to use, and the detection efficiency is improved. And carrying outside is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field related to aircraft engine maintenance and detection, and in particular to an aircraft engine part radian detection device. Background Art

[0002] An aircraft engine is a highly complex and sophisticated thermal machine. As the heart of an aircraft, it is not only the driving force for the aircraft to fly, but also an important driving force for the development of the aviation industry. Every important change in human aviation history is closely related to the technological progress of aircraft engines.

[0003] During daily use of the aircraft, the health status of the engine needs to be monitored, route maintenance and general fault handling needs to be carried out. When a major problem or failure occurs in the engine, external technical support is required. In special circumstances, timely personnel from the maintenance company will also go to the airline's site to support maintenance work. When the engine reaches a certain service life, it must be removed from the aircraft in accordance with regulations for a comprehensive physical examination and "overhaul".

[0004] When a maintenance company performs maintenance and overhaul, the engine needs to be disassembled for maintenance and overhaul. Most aircraft engine parts are rotating parts. During maintenance and overhaul, in addition to replacing easily worn parts, it is also necessary to check whether the parts are deformed. After maintenance, it is also necessary to check whether the parts meet the standards. However, some parts are variable diameter parts, and it is impossible to detect whether the parts meet the standards by conventionally measuring the outer diameter. Therefore, it is necessary to design an aircraft engine part curvature detection instrument. Utility Model Content

[0005] In view of the above technical problems, the purpose of the utility model is to overcome the problem in the prior art that it is impossible to detect whether the shape of the variable diameter part is qualified by conventionally measuring the outer diameter when maintaining and overhauling the aircraft engine.

[0006] In order to achieve the above-mentioned purpose, the utility model provides an aero-engine part curvature detection device, which includes a detection plate, one side of which is a curved detection portion that matches the curved outer wall of the part, a positioning notch is provided on the detection plate, and the cross-section of the detection portion is semicircular.

[0007] Preferably, the detection device further comprises a bottom plate, a mounting mechanism mounted on the bottom plate and detachably connected to the detection plate, a handle portion fixedly mounted on the bottom plate, and a pair of positioning units symmetrically arranged with respect to the bottom plate and respectively mounted on both sides of the bottom plate;

[0008] The positioning unit includes a length adjustment mechanism fixedly mounted on the base plate and at least one positioning cylinder detachably mounted on the telescopic end of the length adjustment mechanism through a locking mechanism. The included angle between the moving plane of the output end of the length adjustment mechanism and the plane where the base plate is located is an acute angle. When the telescopic end of the length adjustment mechanism is adjusted toward the positioning notch, the distance between the telescopic end and the base plate increases. An annular positioning flange corresponding to the positioning notch is protruded from the outer wall of one end of the positioning cylinder.

[0009] Preferably, the mounting mechanism includes a middle connecting plate fixedly mounted on the base plate and a plurality of mounting bolts, the middle connecting plate is penetrated by a plurality of first mounting holes for a plurality of mounting bolts to pass through in a one-to-one manner, a clamping strip portion is protrudingly provided on one side of the detection plate away from the detection portion, a clamping groove matching the clamping strip portion is recessed on the middle connecting plate, and a plurality of second mounting holes matching the plurality of first mounting holes are provided on the detection plate.

[0010] Preferably, the length adjustment mechanism comprises a first strip-shaped connecting plate fixedly mounted on the bottom plate and having a length direction parallel to the length direction of the card slot, a second strip-shaped connecting plate arranged parallel to the first connecting plate, a pair of connecting rods hinged at the middle through a hinge shaft, and an adjusting member assembled on the pair of connecting rods for adjusting the angle of the pair of connecting rods;

[0011] The first connecting plate is penetrated by a first strip through groove in the same length direction, the second connecting plate is penetrated by a second strip through groove in the same length direction, one end of one connecting rod is provided with a first connecting bolt that slides through the first strip through groove and the other end is hinged to the second connecting plate, and the other end of the other connecting rod is provided with a second connecting bolt that slides through the second strip through groove and the other end is hinged to the first connecting plate.

[0012] Preferably, the adjusting member comprises a threaded sleeve rotatably connected to one connecting rod, a shaft seat rotatably connected to the other connecting rod, and an adjusting screw axially connected to the shaft seat and threadedly passing through the threaded sleeve.

[0013] Preferably, the second connecting plate is provided with a slide groove in the same length direction, and at least one end of the slide groove is an open end;

[0014] The locking mechanism includes a connecting arm fixedly connected to the positioning cylinder, a threaded seat fixedly connected to the connecting arm, and at least one locking bolt threadedly mounted on the threaded seat and whose end can abut against the second connecting plate. The end of the connecting arm away from the positioning cylinder is provided with a sliding block portion that is slidably inserted into a sliding groove.

[0015] Preferably, the end of the locking bolt abuts against the outer wall of the sliding groove corresponding to the sliding block portion.

[0016] According to the above technical solution, the utility model provides an aero-engine part curvature detection device, which has the following beneficial effects when used: first, the contact between the detection part and the arc-shaped outer wall of the part is line contact, and when the part meets the standard, the detection part fits the arc-shaped outer wall of the part, and when the part does not meet the standard, there will be a gap between the detection part and the arc-shaped outer wall of the part, and the operation is simple and convenient;

[0017] Second, the cross section of the detection part is semicircular, which makes it easier for the inspector to observe the fit between the detection part and the curved outer wall of the part, reducing the obstruction to the inspector's line of sight and improving the accuracy of the detection;

[0018] Thirdly, the detector is small in size and low in cost, which makes it not only easy to use but also easy to carry.

[0019] Other features and advantages of the utility model will be described in detail in the subsequent specific implementation mode; and the parts not involved in the utility model are the same as the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0021] Figure 1 It is a three-dimensional structural schematic diagram of an aerospace engine parts arc detection device provided by the present invention;

[0022] Figure 2 This utility model provides a kind of arc detection instrument for aircraft engine parts. Figure 1 Schematic diagram of the view from the middle along B;

[0023] Figure 3 This utility model provides a kind of arc detection instrument for aircraft engine parts. Figure 1 The enlarged schematic diagram of point A in the middle;

[0024] Figure 4 This is a three-dimensional structural diagram of a positioning unit of an aerospace engine part arc detection device provided by the present invention. Figure 1 ;

[0025] Figure 5 This is a three-dimensional structural diagram of a positioning unit of an aerospace engine part arc detection device provided by the present invention. Figure 2 .

[0026] Description of Reference Numerals

[0027] 1. Detection plate; 2. Detection part; 3. Positioning notch; 4. Bottom plate; 5. Handle part; 6. Positioning cylinder; 7. Positioning flange; 8. Middle connecting plate; 9. Clip part; 10. Mounting bolt; 11. First connecting plate; 12. Second connecting plate; 13. Connecting rod; 14. First strip through groove; 15. Second strip through groove; 16. Threaded sleeve; 17. Shaft seat; 18. Adjusting screw; 19. Slide groove; 20. Connecting arm; 21. Threaded seat; 22. Locking bolt. DETAILED DESCRIPTION

[0028] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0029] In the present utility model, unless otherwise stated, directional words such as "upper, lower, inside, outside" contained in a term merely represent the orientation of the term in normal use, or are common names understood by those skilled in the art, and should not be regarded as limitations on the term.

[0030] like Figure 1-5 As shown, a curvature detection device for aircraft engine parts includes a detection plate 1, one side of the detection plate 1 is a detection portion 2 that matches the curved outer wall of the part and is curved, a positioning notch 3 is provided on the detection plate 1, and the cross-section of the detection portion 2 is semicircular.

[0031] After the engine parts are repaired and processed, when it is necessary to check whether the curved outer wall of the parts meets the standards, the detection part 2 of the detection plate 1 is fitted against the curved outer wall of the parts, and the positioning notch 3 can match the protrusion on the outer wall of the parts to facilitate the positioning of the detection plate 1. The operation is simple and quick. When there is no flange on the outer wall of the part, the positioning notch 3 on the detection plate 1 can also be cancelled. When in use, the detection part 2 is directly fitted against the curved outer wall of the part. At this time, personnel need to manually position the detection plate 1.

[0032] The contact between the detection part 2 and the arc-shaped outer wall of the part is line contact. When the part meets the standard, the detection part 2 fits the arc-shaped outer wall of the part; when the part does not meet the standard, there will be a gap between the detection part 2 and the arc-shaped outer wall of the part.

[0033] The cross section of the detection part 2 is semicircular, which makes it easy for the detection personnel to observe the fit between the detection part 2 and the curved outer wall of the part, reduces the obstruction to the inspection personnel's line of sight, and improves the detection accuracy.

[0034] Because the cross-section of the detection part 2 is semicircular, the part where the detection part 2 contacts the arc-shaped outer wall of the part is fixed, that is, the detection curve formed by connecting the midpoints of the arc-shaped edges of the semicircular cross-section. The position of the detection curve will not change due to the placement of the detection board 1, which is convenient for the detection personnel to position and place the detection board 1.

[0035] The detection device also includes a bottom plate 4, a mounting mechanism mounted on the bottom plate 4 and detachably connected to the detection plate 1, a handle portion 5 fixedly mounted on the bottom plate 4, and a pair of positioning units symmetrically arranged with respect to the bottom plate 4 and respectively mounted on both sides of the bottom plate 4;

[0036] The positioning unit includes a length adjustment mechanism fixedly mounted on the base plate 4 and at least one positioning cylinder 6 detachably assembled on the telescopic end of the length adjustment mechanism through a locking mechanism. The included angle between the moving plane of the output end of the length adjustment mechanism and the plane where the base plate 4 is located is an acute angle. When the telescopic end of the length adjustment mechanism is adjusted toward the positioning notch 3, the distance between it and the base plate 4 increases. An annular positioning flange 7 corresponding to the positioning notch 3 is protruded on the outer wall of one end of the positioning cylinder 6.

[0037] The positioning flange 7 can contact the upper surface or the lower surface of the flange of the outer wall of the part, and the side wall of the positioning cylinder 6 will contact the side wall of the flange of the outer wall of the part. A pair of positioning units are located on both sides of the bottom plate 4. When the positioning cylinder 6 and the positioning flange 7 on the pair of positioning units are in contact with the flange of the outer wall of the part, the detection plate 1 is positioned. Without the positioning unit in advance, even if the positioning notch 3 is set on the flange of the outer wall of the part, the detection plate 1 will be skewed, and the detection personnel need to manually adjust the position. Therefore, setting a pair of positioning units can help the detection plate 1 to be positioned quickly.

[0038] The handle 5 is convenient for the inspector to hold the inspection tool. When the arc-shaped outer wall of the part needs to be inspected, the original inspection plate 1 can be disassembled through the installation mechanism, and the inspection plate 1 matching the part to be inspected can be installed.

[0039] Because the diameters of the outer wall flanges of different parts are different, it is necessary to adjust the position of the positioning cylinder 6. The position of the positioning cylinder 6 can be adjusted by adjusting the position of the telescopic end of the length adjustment mechanism.

[0040] The mounting mechanism includes a middle connecting plate 8 fixedly mounted on the base plate 4 and a plurality of mounting bolts 10. The middle connecting plate 8 is penetrated with a plurality of first mounting holes for the plurality of mounting bolts 10 to pass through in a one-to-one manner. A clamping strip portion 9 is protrudingly provided on one side of the detection plate 1 away from the detection portion 2. A clamping groove matching the clamping strip portion 9 is recessed on the middle connecting plate 8. The detection plate 1 is provided with a plurality of second mounting holes matching the plurality of first mounting holes.

[0041] When a different detection board 1 needs to be replaced, several mounting bolts 10 are loosened and removed, and the clamping strip part 9 is slid out of the slot; then the clamping strip part 9 on another detection board 1 is slidably inserted into the slot of the middle connecting plate 8, and then the detection board 1 and the middle connecting plate 8 are fixed by several mounting bolts 10.

[0042] The length adjustment mechanism comprises a first strip-shaped connecting plate 11 fixedly mounted on the bottom plate 4 and having a length direction parallel to the length direction of the card slot, a second strip-shaped connecting plate 12 arranged parallel to the first connecting plate 11, a pair of connecting rods 13 whose middle parts are hinged by a hinge shaft, and an adjusting member assembled on the pair of connecting rods 13 for adjusting the angle between the pair of connecting rods 13;

[0043] The first connecting plate 11 is penetrated by a first strip through groove 14 in the same length direction, and the second connecting plate 12 is penetrated by a second strip through groove 15 in the same length direction, one end of one connecting rod 13 is provided with a first connecting bolt sliding through the first strip through groove 14 and the other end is hinged to the second connecting plate 12, and the other end of the other connecting rod 13 is provided with a second connecting bolt sliding through the second strip through groove 15 and the other end is hinged to the first connecting plate 11.

[0044] When it is necessary to adjust the position of the telescopic end of the length adjustment mechanism, that is, to adjust the position of the second connecting plate 12, the angle between a pair of connecting rods 13 is adjusted by the adjusting component, and the pair of connecting rods 13 will rotate around the hinge axis, driving the first connecting bolt to move in the first strip groove 14, and driving the second connecting bolt to slide in the second strip groove 15, so as to adjust the distance between the second connecting plate 12 and the first connecting plate 11, thereby adjusting the position of the second connecting plate 12.

[0045] The adjusting member includes a threaded sleeve 16 rotatably connected to one connecting rod 13 , a shaft seat 17 rotatably connected to the other connecting rod 13 , and an adjusting screw 18 axially connected to the shaft seat 17 and threadedly passing through the threaded sleeve 16 .

[0046] By rotating the adjusting screw 18 , the distance between the threaded sleeve 16 and the shaft seat 17 can be adjusted, thereby driving the pair of connecting rods 13 to rotate around the hinge axis and adjusting the angle between the pair of connecting rods 13 .

[0047] The second connecting plate 12 is provided with a slide groove 19 in the same length direction, and at least one end of the slide groove 19 is an open end;

[0048] The locking mechanism includes a connecting arm 20 fixedly connected to the positioning cylinder 6, a threaded seat 21 fixedly connected to the connecting arm 20, and at least one locking bolt 22 threadedly mounted on the threaded seat 21 and whose end can abut against the second connecting plate 12. The end of the connecting arm 20 away from the positioning cylinder 6 is provided with a slider portion that is slidably inserted into the slide groove 19.

[0049] When there are different problems with the position of the positioning notch 3 on different detection plates 1, the position of the positioning cylinder 6 is adjusted by the length adjustment mechanism to adapt to the change in the diameter of the outer wall flange of the part; the position of the slider part in the slide groove 19 is adjusted to adapt to the change in the position of the outer wall flange of the part. When the locking bolt 22 is loosened, the slider part can slide in the slide groove 19. When the locking bolt 22 is tightened, the slider part can be fixed so that the positioning flange 7 can contact the upper surface or lower surface of the outer wall flange of the part.

[0050] Two connecting arms 20 are assembled simultaneously in a slide groove 19, that is, a group of positioning units has two positioning cylinders 6. At this time, the two positioning flanges 7 on the two positioning cylinders 6 can contact the upper and lower surfaces of the flange of the outer wall of the part respectively, which helps to position the detection plate 1.

[0051] The end of the locking bolt 22 abuts against the outer wall of the sliding groove 19 corresponding to the sliding block portion.

[0052] Because the end of the locking bolt 22 will generate an extrusion force on the second connecting plate 12, the extrusion force will cause the second connecting plate 12 to deform. When the end of the locking bolt 22 hits the outer wall of the slide groove 19 corresponding to the sliding block portion, that is, the sliding block portion and the locking bolt 22 clamp the side wall of the column slide groove 19, the sliding block portion can provide support from the inner wall of the slide groove 19, thereby reducing the influence of the extrusion force generated by the locking bolt 22 on the second connecting plate 12.

[0053] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

[0054] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.

[0055] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. An aerospace engine parts arc detection device, characterized in that: The detection device comprises a detection plate (1), one side of which is a detection portion (2) that matches the arc-shaped outer wall of the part and is curved, a positioning notch (3) is provided on the detection plate (1), and the cross section of the detection portion (2) is semicircular.

2. The arc detection device for aircraft engine parts according to claim 1, characterized in that: The detection device further comprises a base plate (4), a mounting mechanism mounted on the base plate (4) and detachably connected to the detection plate (1), a handle portion (5) fixedly mounted on the base plate (4), and a pair of positioning units symmetrically arranged with respect to the base plate (4) and respectively mounted on both sides of the base plate (4); The positioning unit comprises a length adjustment mechanism fixedly mounted on a base plate (4) and at least one positioning cylinder (6) detachably mounted on a telescopic end of the length adjustment mechanism via a locking mechanism; the included angle between a moving plane of an output end of the length adjustment mechanism and a plane where the base plate (4) is located is an acute angle; when the telescopic end of the length adjustment mechanism is adjusted toward the positioning notch (3), the distance between the telescopic end and the base plate (4) increases; and an annular positioning flange (7) corresponding to the positioning notch (3) is protruded from an outer wall at one end of the positioning cylinder (6).

3. The arc detection device for aircraft engine parts according to claim 2, characterized in that: The mounting mechanism comprises a middle connecting plate (8) fixedly mounted on the bottom plate (4) and a plurality of mounting bolts (10); the middle connecting plate (8) is provided with a plurality of first mounting holes for the plurality of mounting bolts (10) to pass through in a one-to-one correspondence; a clamping strip portion (9) is protrudingly provided on a side edge of the detection plate (1) away from the detection portion (2); a clamping groove matching the clamping strip portion (9) is recessedly provided on the middle connecting plate (8); and a plurality of second mounting holes matching the plurality of first mounting holes are provided on the detection plate (1).

4. The arc detection device for aircraft engine parts according to claim 3, characterized in that: The length adjustment mechanism comprises a first strip-shaped connecting plate (11) fixedly mounted on the bottom plate (4) and having a length direction parallel to the length direction of the card slot, a second strip-shaped connecting plate (12) arranged parallel to the first connecting plate (11), a pair of connecting rods (13) hinged at the middle part by a hinge shaft, and an adjustment member mounted on the pair of connecting rods (13) and used for adjusting the angle between the pair of connecting rods (13); The first connecting plate (11) is provided with a first strip through groove (14) in the same length direction, and the second connecting plate (12) is provided with a second strip through groove (15) in the same length direction, one end of one connecting rod (13) is provided with a first connecting bolt that slides through the first strip through groove (14) and the other end is hinged to the second connecting plate (12), and the other end of the other connecting rod (13) is provided with a second connecting bolt that slides through the second strip through groove (15) and the other end is hinged to the first connecting plate (11).

5. The arc detection device for aircraft engine parts according to claim 4, characterized in that: The adjusting component comprises a threaded sleeve (16) rotatably connected to a connecting rod (13), a shaft seat (17) rotatably connected to another connecting rod (13), and an adjusting screw (18) axially connected to the shaft seat (17) and threadedly passing through the threaded sleeve (16).

6. The arc detection device for aircraft engine parts according to claim 4, characterized in that: The second connecting plate (12) is provided with a slide groove (19) in the same length direction, and at least one end of the slide groove (19) is an open end; The locking mechanism comprises a connecting arm (20) fixedly connected to the positioning cylinder (6), a threaded seat (21) fixedly connected to the connecting arm (20), and at least one locking bolt (22) threadedly mounted on the threaded seat (21) and having an end capable of abutting against the second connecting plate (12); a sliding block portion slidably inserted into a sliding groove (19) is provided at the end of the connecting arm (20) away from the positioning cylinder (6).

7. The arc detection device for aircraft engine parts according to claim 6, characterized in that: The end of the locking bolt (22) abuts against the outer wall of the sliding groove (19) corresponding to the sliding block portion.

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