A device for fixing an aircraft tail section test piece

Abstract

The application relates to an airplane tail section experimental piece fixing device, which comprises a fixing plate, a plurality of fixing frames fixedly arranged on the surface of the fixing plate close to the outer edge, a plurality of folding plates fixedly arranged on the fixing frames and corresponding to the fixing frames, a plurality of fixing rods fixedly arranged on the fixing frames and matched with the fixing frames, a fixing skin A attached to the outer side of the fixing rods and close to one end of the fixing plate, and a fixing skin B located at the other end of the fixing skin A, the fixing plate can be fixedly connected with a test bench, so that the test bench loads force on the device, the fixing frames and the folding plates can fix the fixing rods, the fixing rods support and fix the fixing skin A and the experimental skin, the fixing rods can keep the central axis of the experimental skin horizontal, so as to conveniently load forces in the upward, downward, leftward, rightward, forward and backward directions, the fixing skin B can fix the fixing skin A and the experimental skin together, and can also make the left end surface of the experimental skin consistent with the actual situation under the condition of torque.

Description

Technical Field

[0001] The invention relates to a device for fixing an aircraft tail section test piece. Background Art

[0002] At present, a certain aircraft project needs to conduct static strain test analysis on the test pieces of the tail section of the fuselage before and after modification, in order to obtain the strength change parameters after modification. The specific content is to load the load spectrum of the actual resultant force during flight on the tail section test piece of the Kitty Hawk-500 aircraft after modification, collect the strain parameters of the tail section test piece, and determine the modification effect by analyzing the stress and strain data. The left end face of the aircraft tail section test piece is an inclined plane, which is connected by riveting the skin. The force and torque applied to the aircraft tail section test piece are on the normal plane perpendicular to the aircraft heading. The direction of force loading on the test bench is up, down, left, right, front and back. Directly fixing the aircraft tail section test piece to the fuselage requires a transfer fixture to ensure that the loading force on the test piece is easy to apply. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide an aircraft tail section test piece fixing device which can fix the aircraft tail section test piece.

[0004] The present invention adopts the following technical solutions:

[0005] The present invention is used to fix the experimental piece of the tail section of the aircraft, including a fixing plate, a plurality of fixing brackets fixedly arranged at the outer edge of the fixing plate surface, a plurality of folding plates fixedly arranged on the fixing brackets and corresponding to the fixing brackets, a plurality of fixing rods fixedly arranged on the fixing brackets and adapted to the fixing brackets, a fixing skin A attached to the outside of the fixing rods and with one end close to the fixing plate, and a fixing skin B located at the other end of the fixing skin A. The cross-sections of the folding plates and the fixing rods are both L-shaped. The left end of the fixing skin A is clamped between the folding plates and the fixing brackets. The experimental piece It includes an experimental skin and a support plate fixed on the inner side of the experimental skin, the left end face of the experimental skin forms an acute angle with the lower end face of the experimental skin, the right end face of the experimental skin forms a right angle with the lower end face of the experimental skin, the support plate is parallel to the left end face of the experimental skin, the left end portion of the experimental skin is attached to the outside of the fixing rod and contacts with the other end of the fixed skin A, the fixed skin B is located on the outside of the experimental skin and the fixed skin A and are riveted to the experimental skin and the fixed skin A respectively, and the left end portion of the experimental skin and the fixed skin A are both riveted to the fixing rod.

[0006] The fixing frame described in the present invention includes a through slot, two support frames respectively located on both sides of the through slot and a number of through holes arranged on the two support frames. The fixing rod is located in the through slot, and the end of the fixing rod is provided with a fixing hole adapted to the through hole. Bolts with nuts are fitted inside the through hole and the fixing hole, and a nut is screwed on the bottom end of the bolt. The nut and the nut are respectively located on the side of the two support frames away from the through slot, and the left end of the fixed skin A is stuck between the folding plate and the support frame.

[0007] The fixing frames at the top, bottom and horizontal positions of the present invention are each provided with two fixing rods, the left ends of the two fixing rods and the plate surfaces close to the edge of the fixing plate are in contact with the plate surface of the folding plate, the left ends of the two fixing rods and the plate surfaces away from the edge of the fixing plate are in contact with each other, and the left ends of the two fixing rods and the parts away from the edge of the fixing plate and the two supporting frames are provided with clamping blocks, and the clamping blocks are provided with clamping holes that are compatible with the through holes and the fixing holes, one end face of the clamping block is in contact with the inner side wall of the through groove, and the other end face is in contact with the left end of the fixing rod and the part away from the edge of the fixing plate.

[0008] The present invention excludes that a fixing rod is provided on each of the fixing frames at the top, the bottom and the horizontal position, and the fixing rod is located in the through slot.

[0009] The experimental piece described in the present invention also includes an opening arranged at the upper end of the experimental skin, an experimental plate A located in the opening and with its lower end fixedly connected to the support plate, and an experimental plate B fixedly connected to the upper part of the experimental plate A and located on the upper surface of the fixed skin A, and the experimental plate B is riveted to the fixed skin A and the fixed skin B respectively.

[0010] The fixing plate of the present invention is provided with an assembly hole A at the middle position, and the upper end portion of the fixing skin A is provided with an assembly hole B.

[0011] The positive effects of the present invention are as follows:

[0012] 1. The fixing plate of the present invention can be fixedly connected to the test bench, so that the test bench can load force on the device. The fixing frame and the folding plate can fix the fixing rod. The fixing rod supports and fixes the fixed skin A and the experimental skin. The fixing rod can keep the central axis of the experimental skin horizontal, so as to facilitate the loading of positive forces in the up, down, left, right, front and back directions. The fixed skin B can fix the fixed skin A and the experimental skin together, and can also make the left end face of the experimental skin consistent with the actual situation when subjected to torque.

[0013] 2. The bolt and nut of the present invention can fix the fixing rod in the through groove.

[0014] 3. Two fixing rods are provided on the topmost, bottommost and horizontal fixing frames of the present invention, which can cope with the up-down, left-right, front-back positive forces loaded by the test bench. By tightening the nuts, the two support frames can squeeze the clamping blocks, and then the clamping blocks can fix the two fixing rods in the through grooves.

[0015] 4. Except for the top, bottom and horizontal positions, each of the fixing frames of the present invention is provided with a fixing rod, which can save materials.

[0016] 5. The test panels A and B of the present invention can make the stress conditions of the test skin consistent with the actual conditions.

[0017] 6. The assembly holes A and B of the present invention can facilitate the staff to disassemble the fixing rod, the fixing skin A, the fixing skin B and the experimental piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the present invention after removing the fixed skin A;

[0020] Figure 3 This is a schematic diagram of the fixing rod structure of the present invention;

[0021] Figure 4 This is a schematic structural diagram of the compression block of the present invention;

[0022] Figure 5 Schematic diagram of the bolt structure of the present invention

[0023] Figure 6 This is a schematic diagram of the coordination between the folding plate and the fixing rod of the present invention;

[0024] Figure 7 Schematic diagram of the experimental piece structure of the present invention;

[0025] Figure 8 Schematic diagram of the relative positions of the fixed skin A, fixed skin B and experimental skin of the present invention;

[0026] Figure 9 It is a structural schematic diagram of the assembly hole B of the present invention.

[0027] In the accompanying drawings: 1. Test piece; 2. Fixing plate; 3. Fixing frame; 4. Folding plate; 5. Fixing rod; 6. Fixing skin A; 7. Fixing skin B; 8. Test skin; 9. Support plate; 10. Through slot; 11. Support frame; 12. Through hole; 13. Fixing hole; 14. Nut; 15. Bolt; 16. Nut; 17. Pressing block; 18. Pressing hole; 19. Opening; 20. Test board A; 21. Test board B; 22. Assembly hole A; 23. Assembly hole B. DETAILED DESCRIPTION

[0028] As attached Figure 1 As shown in FIG. 9 , the present invention is used for fixing an experimental piece 1 of an aircraft tail section, comprising a fixing plate 2, a plurality of fixing brackets 3 fixedly arranged on the fixing plate 2 near the outer edge thereof, a plurality of folding plates 4 fixedly arranged on the fixing brackets 3 and corresponding to the fixing brackets 3, a plurality of fixing rods 5 fixedly arranged on the fixing brackets 3 and adapted to the fixing brackets 3, a fixing skin A6 attached to the outside of the fixing rods 5 and with one end close to the fixing plate 2, and a fixing skin B7 located at the other end of the fixing skin A6. The cross-sections of the folding plates 4 and the fixing rods 5 are both L-shaped, and the left end of the fixing skin A6 is clamped between the folding plates 4 and the fixing brackets 3. The test piece 1 includes an experimental skin 8 and a support plate 9 fixed on the inner side of the experimental skin 8. The left end face of the experimental skin 8 forms an acute angle with the lower end face of the experimental skin 8, and the right end face of the experimental skin 8 forms a right angle with the lower end face of the experimental skin 8. The support plate 9 is parallel to the left end face of the experimental skin 8. The left end portion of the experimental skin 8 is attached to the outside of the fixing rod 5 and contacts the other end of the fixed skin A6. The fixed skin B7 is located on the outside of the experimental skin 8 and the fixed skin A6 and is riveted to the experimental skin 8 and the fixed skin A6 respectively. The left end portion of the experimental skin 8 and the fixed skin A6 are both riveted to the fixing rod 5. The fixing plate 2 can be fixedly connected to the test bench, so that the test bench can load force on the device. The fixing frame 3 and the folding plate 4 can fix the fixing rod 5. The fixing rod 5 supports and fixes the fixed skin A6 and the experimental skin 8. The fixing rod 5 can keep the central axis of the experimental skin 8 horizontal, so as to facilitate the loading of positive forces in the up, down, left, right, front and back directions. The fixed skin B7 can fix the fixed skin A6 and the experimental skin 8 together, and can also make the left end face of the experimental skin 8 consistent with the actual situation when subjected to torque.

[0029] The fixing frame 3 of the present invention includes a through slot 10, two support frames 11 located on either side of the through slot 10, and a plurality of through holes 12 provided on the two support frames 11. The fixing rod 5 is located within the through slot 10. The end of the fixing rod 5 is provided with a fixing hole 13 that matches the through hole 12. Bolts 15 with nuts 14 are fitted inside the through holes 12 and 13. Nuts 16 are screwed to the bottom ends of the bolts 15. The nuts 14 and 16 are located on the sides of the two support frames 11 away from the through slot 10. The left end of the fixed skin A6 is clamped between the folding plate 4 and the support frames 11. The bolts 15 and nuts 16 secure the fixing rod 5 within the through slot 10.

[0030] The two fixing rods 5 are provided on the fixing frame 3 at the top, bottom and horizontal positions of the present invention, and the left ends of the two fixing rods 5 and the plate surfaces close to the edge of the fixing plate 2 are in contact with the plate surface of the folding plate 4, and the left ends of the two fixing rods 5 and the plate surfaces away from the edge of the fixing plate 2 are in contact with each other. A clamping block 17 is provided between the left ends of the two fixing rods 5 and the parts away from the edge of the fixing plate 2 and the two supporting frames 11. The clamping block 17 is provided with a clamping hole 18 that is compatible with the through hole 12 and the fixing hole 13. One end face of the clamping block 17 contacts the inner side wall of the through groove 10, and the other end face contacts the left end of the fixing rod 5 and the part away from the edge of the fixing plate 2, which can cope with the up, down, left, right, front and back positive forces loaded on the test bench. By tightening the nut 16, the two supporting frames 11 can squeeze the clamping block 17, and then the clamping block 17 fixes the two fixing rods 5 in the through groove 10.

[0031] In the present invention, each of the fixing frames 3 at the top, bottom and horizontal positions is provided with a fixing rod 5 , and the fixing rod 5 is located in the through slot 10 , which can save materials.

[0032] The test piece 1 of the present invention also includes an opening 19 at the upper end of the test skin 8, a test plate A20 located within opening 19 and fixedly connected at its lower end to the support plate 9, and a test plate B21 fixedly connected to the upper portion of test plate A20 and located on the upper surface of the fixed skin A6. Test plate B21 is riveted to the fixed skin A6 and fixed skin B7, respectively. Test plates A20 and B21 ensure that the stress conditions of the test skin 8 are consistent with actual conditions.

[0033] The fixing plate 2 of the present invention has an assembly hole A22 in the middle, and the fixing skin A6 has an assembly hole B23 at its upper end. Assembly holes A22 and B23 facilitate disassembly of the fixing rod 5, fixing skin A6, fixing skin B7, and the test piece 1.

[0034] During use, the staff installs the fixing frame 3 and the folding plate 4 on the fixing plate 2 through the assembly hole A22 and the assembly hole B23, and installs the fixing rod 5 on the fixing frame 3 through the nut 14, the bolt 15 and the nut 16. Two fixing rods 5 are provided on the fixing frame 3 at the top, the bottom and the horizontal position. A clamping block 17 is provided between the plate surface of the two fixing rods 5 away from the edge of the fixing plate 2 and the two supporting frames 11. Except for the top, the bottom and the horizontal position, there is a fixing rod 5. By tightening the nut 16, the two supporting frames 11 can squeeze the clamping block 17, and then the clamping block 17 fixes the two fixing rods 5 in the through groove 10, and then installs the fixed skin A6, the fixed skin B7 and the test piece 1. Finally, the fixing plate 2 is fixedly connected to the test bench, and the test bench can be used to load force on the device.

[0035] It should be pointed out finally that the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A device for fixing an aircraft tail section test piece, used for fixing an aircraft tail section test piece (1), characterized in that: The test piece (1) comprises a fixed plate (2), a plurality of fixed frames (3) fixedly arranged on the surface of the fixed plate (2) near the outer edge, a plurality of folding plates (4) fixedly arranged on the fixed frames (3) and corresponding to the fixed frames (3), a plurality of fixed rods (5) fixedly arranged on the fixed frames (3) and adapted to the fixed frames (3), a fixed skin A (6) attached to the outside of the fixed rods (5) and with one end close to the fixed plate (2), and a fixed skin B (7) located at the other end of the fixed skin A (6), wherein the cross-sections of the folding plates (4) and the fixed rods (5) are both L-shaped, and the left end of the fixed skin A (6) is stuck between the folding plates (4) and the fixed frames (3), and the test piece (1) comprises a test skin (8) and a support plate (9) fixedly arranged on the inner side of the experimental skin (8), the left end face of the experimental skin (8) forms an acute angle with the lower end face of the experimental skin (8), the right end face of the experimental skin (8) forms a right angle with the lower end face of the experimental skin (8), the support plate (9) is parallel to the left end face of the experimental skin (8), the left end portion of the experimental skin (8) is attached to the outside of the fixing rod (5) and contacts the other end of the fixed skin A (6), the fixed skin B (7) is located on the outside of the experimental skin (8) and the fixed skin A (6) and is riveted to the experimental skin (8) and the fixed skin A (6) respectively, and the left end portion of the experimental skin (8) and the fixed skin A (6) are both riveted to the fixing rod (5).

2. The aircraft tail section test piece fixing device according to claim 1, characterized in that: The fixing frame (3) includes a through slot (10), two support frames (11) respectively located on both sides of the through slot (10), and a plurality of through holes (12) arranged on the two support frames (11); the fixing rod (5) is located in the through slot (10); the end of the fixing rod (5) is provided with a fixing hole (13) adapted to the through hole (12); a bolt (15) with a nut (14) is fitted inside the through hole (12) and the fixing hole (13); a nut (16) is screwed to the bottom end of the bolt (15); the nut (14) and the nut (16) are respectively located on one side of the two support frames (11) away from the through slot (10); and the left end of the fixed skin A (6) is stuck between the folding plate (4) and the support frame (11).

3. The aircraft tail section test piece fixing device according to claim 2, characterized in that: Two fixing rods (5) are provided on the fixing frame (3) at the top, bottom and horizontal positions. The left ends of the two fixing rods (5) and the plate surfaces close to the edge of the fixing plate (2) are in contact with the plate surface of the folding plate (4). The left ends of the two fixing rods (5) and the plate surfaces away from the edge of the fixing plate (2) are in contact with each other. A clamping block (17) is provided between the left ends of the two fixing rods (5) and the parts away from the edge of the fixing plate (2) and the two supporting frames (11). The clamping block (17) is provided with a clamping hole (18) adapted to the through hole (12) and the fixing hole (13). One end face of the clamping block (17) is in contact with the inner side wall of the through groove (10), and the other end face is in contact with the left end of the fixing rod (5) and the part away from the edge of the fixing plate (2).

4. The aircraft tail section test piece fixing device according to claim 3, characterized in that: Excluding the top, bottom and horizontal positions, each of the fixing frames (3) is provided with a fixing rod (5), and the fixing rod (5) is located in the through slot (10).

5. The aircraft tail section test piece fixing device according to claim 1, characterized in that: The test piece (1) further includes an opening (19) provided at the upper end of the test skin (8), a test plate A (20) located in the opening (19) and having its lower end fixedly connected to the support plate (9), and a test plate B (21) fixedly connected to the upper part of the test plate A (20) and located on the upper surface of the fixed skin A (6), wherein the test plate B (21) is riveted to the fixed skin A (6) and the fixed skin B (7), respectively.

6. The aircraft tail section test piece fixing device according to claim 1, characterized in that: An assembly hole A (22) is provided at the middle position of the fixing plate (2), and an assembly hole B (23) is provided at the upper end of the fixing skin A (6).

Images