Rapid detection device for relative positions of engine joint positioning holes

Abstract

The utility model discloses a rapid detection device for the relative position of engine joint positioning holes. Comprising an upper semi-ring supporting plate (1), the two ends of the upper semi-ring supporting plate (1) are detachably connected with the two ends of a lower semi-ring supporting plate (4), the upper semi-ring supporting plate (1) is detachably connected with a first corner seat (2) and a second corner seat (3), the lower semi-ring supporting plate (4) is detachably connected with a third triangular seat (5) and a fourth corner seat (6), and the first corner seat, the second corner seat and the fourth corner seat are located at the four corners of a quadrangle; and the first to the four corner seats are respectively connected with four joints of an engine through pins (7). According to the utility model, the problem that the relative position of the engine joint hole site is difficult to measure is solved, and rapid detection of the engine joint under general conditions outside a rack is realized.

Description

Technical Field

[0001] This utility model belongs to the field of aircraft assembly technology, and in particular is a rapid detection device for the relative position of engine connector positioning holes. Background Technology

[0002] The engine compartment nacelle of Category III platform aircraft consists of four parts: the front section, the upper cover, the side covers, and the lower cover. All four parts connect to the engine. During the installation of the engine compartment cover, the technical requirements are: "After installation, the step difference between the engine compartment cover and the four frames should be ±2mm, and the pins of the lower cover should be easily inserted and removed." However, in actual production, after the engine is assembled with the center and outer wing engine compartments, problems arise with the step difference between the engine compartment cover and the four frames exceeding the tolerance, and the pins of the lower cover being difficult to insert and remove. The main reasons for this problem are twofold: firstly, the engine compartment cover is a sheet metal part, and due to stress during manufacturing and transportation, it is prone to varying degrees of deformation, which is uncontrollable; secondly, the engine connector has 12 holes, and the distance between holes at different connectors exceeds 500mm, resulting in an excessively large range of relative positional tolerances for the holes. After this problem arose, the common method for checking the joint hole positions was to insert 12 specially made precision pins into the engine joint. These pins have holes at their ends for placing a laser tracker target ball. The coordinate values ​​of the holes are repeatedly measured using the laser tracker, and shims are added to the lower engine joint to adjust the hole spacing, thus meeting assembly coordination requirements. The drawbacks of this method are: the number of laser trackers on the production site is limited, the equipment application process is cumbersome, and in most cases, inspection work cannot be carried out immediately; it requires at least four people to conduct the inspection in an open area, and the inspection process includes establishing a local coordinate system, transforming coordinates, and repeatedly measuring the 12 joint hole positions, taking more than half a day and resulting in low efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a rapid detection device for the relative position of engine connector positioning holes. This invention solves the problem of difficulty in measuring the relative position of engine connector holes.

[0004] The technical solution of this utility model is: a rapid detection device for the relative position of engine connector positioning holes, including an upper half ring support plate, the two ends of the upper half ring support plate being detachably connected to the two ends of the lower half ring support plate, a first corner seat and a second corner seat being detachably connected to the upper half ring support plate, and a third corner seat and a fourth corner seat being detachably connected to the lower half ring support plate, the first to fourth corner seats being located at the four corners of a quadrilateral; the first to fourth corner seats are respectively connected to the four connectors of the engine by pins.

[0005] In the aforementioned rapid detection device for the relative position of the engine connector positioning hole, the detachable connection structure between the semi-ring support plate and the corner seat is a combination structure of quick-release bolt A and handle nut.

[0006] In the aforementioned rapid detection device for the relative position of the engine connector positioning holes, fixed bushings are provided in the connection holes of the semi-ring support plate through which the quick-release bolt A passes and the connection holes of the corner seat.

[0007] In the aforementioned rapid detection device for the relative position of the engine connector positioning holes, the detachable connection structure between the upper and lower half-ring support plates is a combination structure of quick-release bolt B and handle nut.

[0008] In the aforementioned rapid detection device for the relative position of the engine connector positioning holes, fixed bushings are provided in the connection holes of the upper half ring support plate through which the quick-release bolt B passes and in the connection holes of the lower half ring support plate.

[0009] In the aforementioned rapid detection device for the relative position of engine connector positioning holes, both the upper and lower half-ring support plates are aluminum alloy components.

[0010] The advantages of this utility model are: This utility model is used for rapid detection of the relative positions of multiple holes in a large span of engine connectors, which solves the problem that the relative positions of engine connector holes are difficult to measure, and realizes rapid detection under general conditions outside the engine connector frame.

[0011] The upper and lower ring support plates of this utility model are both made of aluminum alloy components, with a single weight of only 3.5Kg. Its structure is simple and easy to operate. Two operators can quickly complete the inspection in just half an hour. At the same time, the device does not require space and can realize rapid inspection under general conditions outside the engine connector frame, which significantly improves the inspection efficiency. Attached Figure Description

[0012] Figure 1 Main structural view of this utility model;

[0013] Figure 2 Left view of the structure of this utility model;

[0014] Figure 3 Connection diagram of the angle bracket and engine connector of this utility model;

[0015] Figure 4 Connection diagram of the corner bracket and semi-ring support plate of this utility model;

[0016] Among them, 1-upper support plate, 2-first corner seat, 3-second corner seat, 4-lower support plate, 5-third corner seat, 6-fourth corner seat, 7-pin, 8-quick release bolt A, 9-quick release bolt B, 10-handle nut, 11-fixed bushing. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0018] Example 1. A rapid detection device for the relative position of positioning holes in an engine connector, configured as follows: Figures 1-4 As shown, it includes an upper ring support plate 1, the two ends of which are detachably connected to the two ends of a lower ring support plate 4. A first corner seat 2 and a second corner seat 3 are detachably connected to the upper ring support plate 1, and a third corner seat 5 and a fourth corner seat 6 are detachably connected to the lower ring support plate 4. The first to fourth corner seats are located at the four corners of the quadrilateral. The first to fourth corner seats are respectively connected to the four joints of the engine by pins 7.

[0019] The detachable connection structure between the semi-ring support plate and the corner seat is a combination of quick-release bolt A8 and handle nut 10.

[0020] Fixed bushings 11 are provided in the connection holes of the semi-circular support plate and the corner seat through which the quick-release bolt A8 passes.

[0021] The detachable connection structure between the upper and lower half ring support plates is a combination of quick-release bolt B9 and handle nut 10.

[0022] Both the upper half-ring support plate 1 and the lower half-ring support plate 4 through which the quick-release bolt B9 passes are equipped with fixing bushings 11 to prevent damage to the holes from repeated disassembly of the fasteners.

[0023] The quick-release bolts A and B have different lengths.

[0024] Both the upper and lower half-ring support plates are made of aluminum alloy.

[0025] During the inspection process, the three holes on the left side of the upper engine connector are used as reference holes. This device can quickly detect whether the relative positions of other connector positioning holes are out of tolerance.

[0026] This device is used to detect whether the relative position of the engine connector positioning holes exceeds the tolerance under normal off-frame conditions. First, using the three holes on the upper left side of the engine connector as reference holes, the first and second corner seats 2 and 3 are connected to the engine connector using pin 7. Then, the upper ring support plate 1 is connected to the first and second corner seats 2 and 3 respectively using quick-release bolts A8 and handle nuts 10. If the upper ring support plate 1 and the second corner seat 3 can be connected smoothly at this point, it indicates that the relative position of the positioning holes on the upper part of the engine connector is correct. The next step is to check whether the relative position of the positioning holes on the lower part of the engine connector is correct with respect to the reference holes: First, the quick-release bolts B9 and... Handle nut 10 connects the upper half ring support plate 1 to the lower half ring support plate 4. Similarly, use pin 7 to connect the third corner seat 5 and the fourth corner seat 6 to the engine connector. Then use quick-release bolt A8 and handle nut 10 to connect the third corner seat 5 and the fourth corner seat 6 to the lower half ring support plate 4 in turn. If the third corner seat 5 and the fourth corner seat 6 can be successfully connected to the lower half ring support plate 4 at this time, it means that the positioning hole at the bottom of the engine connector is in the correct relative position to the reference hole on the upper left side. At this point, the relative position of all positioning holes is quickly checked.

Claims

1. A rapid detection device for the relative position of positioning holes in an engine connector, characterized in that, It includes an upper ring support plate (1), the two ends of the upper ring support plate (1) are detachably connected to the two ends of the lower ring support plate (4), the upper ring support plate (1) is detachably connected to a first corner seat (2) and a second corner seat (3), the lower ring support plate (4) is detachably connected to a third corner seat (5) and a fourth corner seat (6), the first to fourth corner seats are located at the four corners of the quadrilateral; the first to fourth corner seats are respectively connected to the four joints of the engine by pins (7).

2. The rapid detection device for the relative position of engine connector positioning holes according to claim 1, characterized in that, The detachable connection structure between the semi-ring support plate and the corner seat is a combination of quick-release bolt A (8) and handle nut (10).

3. The rapid detection device for the relative position of engine connector positioning holes according to claim 2, characterized in that, The quick-release bolt A(8) passes through the connecting hole of the semi-ring support plate and the connecting hole of the corner seat, and both are equipped with fixing bushings (11).

4. The rapid detection device for the relative position of engine connector positioning holes according to claim 1, characterized in that, The detachable connection structure between the upper and lower half ring support plates is a combination of quick-release bolt B (9) and handle nut (10).

5. The rapid detection device for the relative position of engine connector positioning holes according to claim 4, characterized in that, Fixed bushings (11) are provided in the connection holes of the upper half ring support plate (1) and the lower half ring support plate (4) through which the quick-release bolt B (9) passes.

6. The rapid detection device for the relative position of engine connector positioning holes according to claim 1, characterized in that, Both the upper and lower half-ring support plates are made of aluminum alloy.

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