CN113640125A - Aircraft radome negative pressure pneumatic load static strength test device - Google Patents
Aircraft radome negative pressure pneumatic load static strength test device Download PDFInfo
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- 230000003068 static effect Effects 0.000 title claims abstract description 18
- 230000005291 magnetic effect Effects 0.000 claims description 13
- 238000005259 measurement Methods 0.000 claims description 6
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0044—Pneumatic means
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Abstract
The invention discloses an aircraft radome negative pressure pneumatic load static strength test device, which relates to the technical field of aircraft structure test device design and comprises a load measuring piece, an installation seat and a test piece fixedly connected to the upper end of the installation seat, wherein the outer surface of the test piece is wrapped with a connecting cover, an ejector block and a plurality of tension blocks are fixedly laid on the outer surface of the connecting cover, a fixing assembly is connected between every two adjacent tension blocks, fixing pieces I are fixedly connected to the centers of the ejector block and the tension blocks, and a fixing piece II matched with the fixing pieces I is fixedly connected to the load measuring piece. According to the invention, two adjacent tension blocks are connected through the fixing assembly, and the plurality of tension blocks are fixed or separated by the fixing assembly, so that the negative pressure resistance suction loads of different areas of the test piece can be conveniently tested, the test flexibility is good, and the test requirements can be better met.
Description
Technical Field
The invention relates to the technical field of design of airplane structure test devices, in particular to a negative pressure pneumatic load static strength test device for an airplane antenna housing.
Background
The aircraft need install various transmission, receiving antenna, with it complex, must consider the protection to the antenna and design the antenna house in aircraft structural design in-process, antenna and antenna house are outstanding outside in the organism, because pneumatic load's effect under some flight condition, can produce negative pressure suction load at the antenna house surface, can surpass an atmospheric pressure after the negative pressure intensity of antenna house surface multiplies certain factor of safety, reach actual need in order to ensure the intensity of antenna house, need test the intensity of antenna house.
Aircraft antenna house negative pressure pneumatic load static strength test device among the prior art adopts specific structure to exert the pulling force to the antenna house usually to realize that aircraft antenna house examines with the antenna simultaneously, but aircraft antenna house negative pressure pneumatic load static strength test device among the prior art generally can only test the region of the fixed size of antenna house, and inconvenient nimble test antenna house goes up regional anti negative pressure suction load of equidimension not, leads to the limitation great, therefore we disclose an aircraft antenna house negative pressure pneumatic load static strength test device in order to improve above-mentioned problem.
Disclosure of Invention
The invention aims to provide an aircraft radome negative pressure pneumatic load static strength test device, which is used for solving the problems in the background technology.
In order to achieve the above purpose, the present application provides the following technical solutions: the utility model provides an aircraft antenna house negative pressure pneumatic load static strength test device, including load measurement spare, mount pad and fixed connection in the test piece of mount pad upper end, the surface parcel of test piece has the connecting cover, kicking block and a plurality of pulling force piece have been laid to the surface mounting of connecting cover, the kicking block is located on the top surface of connecting cover, it is a plurality of pulling force piece evenly distributed in on the side surface of connecting cover, adjacent two be connected with fixed subassembly between the pulling force piece, the pulling force piece with be connected with fixed subassembly equally between the kicking block, kicking block and a plurality of the equal fixedly connected with mounting of center department of pulling force piece is one, on the load measurement spare fixedly connected with the mounting two of a mounting looks adaptation.
Borrow by above-mentioned structure, through the setting of a plurality of pulling force pieces, conveniently carry out anti negative pressure suction load test to the local area of test piece difference, in addition, be connected through fixed subassembly between two adjacent pulling force pieces, utilize fixed subassembly to fix a plurality of pulling force pieces mutually or the phase separation to conveniently test the anti negative pressure suction load in the not equidimension region of test piece, test flexibility is good, better satisfy experimental demand.
Preferably, the fixing assembly comprises an inserting block and an operating part, a sliding groove is formed in one side end of the tension block, the inserting block is connected to the sliding groove in a sliding mode, the operating part is connected between the inserting block and the tension block, a slot matched with the inserting block is formed in the other side end of the tension block, and a slot matched with the inserting block is also formed in the lower side end of the top block.
Furthermore, the insertion block on one tension block slides to the insertion groove on the other tension block along the sliding groove to realize fixation between two adjacent tension blocks, the insertion block on one tension block is moved out of the insertion groove on the other tension block to realize separation between two adjacent tension blocks, and when the test of the negative pressure resistant suction load of a local area of the test piece is carried out, a plurality of tension blocks which are involved in the test are not required to be fixed mutually, so that the test area where the tension blocks which are involved in the test are not easily interfered.
Preferably, the operating part comprises a shifting block, an operating opening communicated with the sliding groove is formed in the end face, far away from the connecting cover, of the tension block, and the shifting block is fixedly connected to the side end of the inserting block and penetrates through the operating opening.
Further, an operator can drive the inserting block on one tension block to be inserted into or removed from the inserting groove on the other tension block by shifting the shifting block.
Preferably, the insert block is a ferromagnetic block, and the inner wall of the slot screen is fixedly connected with a first magnetic suction block matched with the insert block.
Furthermore, after the inserting block on one pulling force block is inserted into the slot on the other pulling force block, the inserting block can be stably positioned in the slot under the action of the first magnetic attracting block and is not easy to move out of the slot under the non-artificial action, so that the fixing effect of the two adjacent pulling force blocks is better.
Preferably, the inner wall of the chute is fixedly connected with a second magnetic suction block matched with the insertion block.
Furthermore, after the insertion block on one tension block is moved out of the slot on the other tension block, the insertion block can be stably positioned in the sliding groove under the action of the magnetic attraction block II and is not easy to move out of the sliding groove under the non-artificial action, so that the interference on a test area where the tension block participating in the test is located is not easy to cause.
Preferably, the load measuring part comprises a load sensor, a wire bundling column and a plurality of pull ropes, the upper end of the wire bundling column is fixedly connected to the measuring end of the load sensor through a connecting rope, one end of each pull rope is fixedly connected with the lower end of the wire bundling column, the second fixing part is provided with a plurality of second fixing parts, and the second fixing parts are respectively and fixedly connected to the other ends of the pull ropes.
Further, when testing great region, especially when testing irregular great region, be connected a plurality of stay cords with the mounting on a plurality of pulling force pieces through mounting two of its lower extreme respectively for the test is more stable, also makes things convenient for distributed test simultaneously.
Preferably, the first fixing part comprises a fixing ring, and the second fixing part comprises a hook matched with the fixing ring.
Further, for among the prior art directly fixed mutually with solid fixed ring with wire rope, couple and solid fixed ring cooperate, convenient fixed and separation operation, it is more convenient to use.
Preferably, a plurality of hanging rings are fixedly connected to the side end of the wire bundling column, and the hanging rings are matched with the hooks.
Furthermore, the hooks which do not participate in connecting the fixing rings can be hung on the hanging rings at the side ends of the wire bundling column, on one hand, a good storage effect can be achieved, and on the other hand, the problem that the redundant hooks are accidentally hung on the fixing rings which do not participate in testing and interfere with the testing can be avoided.
In conclusion, the technical effects and advantages of the invention are as follows:
1. in the invention, the plurality of tension blocks are arranged, so that the negative pressure suction load resistance test can be conveniently carried out on different local areas of the test piece, in addition, two adjacent tension blocks are connected through the fixing assembly, and the plurality of tension blocks are fixed or separated by the fixing assembly, so that the negative pressure suction load resistance test of the test piece in different areas is convenient, the test flexibility is good, and the test requirement is better met.
2. According to the invention, when the negative pressure suction load resistance test is carried out on the local area of the test piece, the mutual fixing effect among the plurality of tension blocks participating in the test is not required, so that the test area where the tension blocks participating in the test are located is not easily interfered, the insertion block can be stably positioned in the slot under the effect of the first magnetic absorption block and is not easily moved out of the slot under the non-artificial effect, and the fixing effect of two adjacent tension blocks is better.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic perspective view of a negative pressure pneumatic load static strength test device for an aircraft radome in this embodiment;
FIG. 2 is a partially exploded view of the present embodiment;
fig. 3 is a schematic perspective view of a test block in this embodiment;
fig. 4 is a schematic perspective view of the test block in this embodiment from another viewing angle;
FIG. 5 is a schematic cross-sectional view of the test block in this embodiment;
fig. 6 is a schematic perspective view of the top block in the embodiment in a bottom view;
fig. 7 is a schematic perspective view of the load measuring unit in this embodiment.
In the figure: 1. a mounting seat; 2. testing the piece; 3. a connecting cover; 4. a tension block; 5. a top block; 6. a fixing ring; 7. a load sensor; 8. pulling a rope; 9. hooking; 10. connecting ropes; 11. a wire harness post; 12. a chute; 13. an insert block 14 and an operation port; 15. shifting blocks; 16. a slot; 17. a second magnetic block; 18. a first magnetic suction block; 19. and (5) hanging a ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b): referring to fig. 1 and 2, the negative pressure pneumatic load static strength test device for the aircraft radome comprises a load measuring part, a mounting seat 1 and a test part 2 fixedly connected to the upper end of the mounting seat 1, wherein the test part 2 is any column-shaped aircraft radome in the prior art.
The outer surface of the test piece 2 is wrapped with a connecting cover 3, and the connecting cover 3 can be a canvas bag.
The outer fixed surface of connecting cover 3 has laid kicking block 5 and a plurality of pulling force piece 4, and kicking block 5 and a plurality of pulling force piece 4 constitute the appearance and test 2 the same cover body forms, and laminate mutually through connecting cover 3 and test 2's surface, through the setting of a plurality of pulling force pieces 4, conveniently carry out anti negative pressure suction load test to the local area that tests 2 difference.
The top block 5 is located on the top surface of the connecting cover 3, the plurality of tension blocks 4 are uniformly distributed on the side surface of the connecting cover 3, the fixing assembly is connected between every two adjacent tension blocks 4, the fixing assembly is also connected between the tension blocks 4 and the top block 5, it needs to be further explained that the fixing assembly has more structures, is not embodied in fig. 1 and fig. 2, but is embodied in fig. 3, fig. 4 and fig. 5 in detail, the two adjacent tension blocks 4 are connected through the fixing assembly, and the tension blocks 4 are fixed or separated by the fixing assembly, so that the negative pressure resistant suction loads of different size areas of the test piece 2 can be conveniently tested.
The center of the top block 5 and the center of the tension blocks 4 are fixedly connected with a first fixing piece, a second fixing piece matched with the first fixing piece is fixedly connected to the load measuring piece, and the second fixing piece on the load measuring piece is connected with the first fixing piece on the top block 5 or the tension block 4, so that the region of the test piece 2 where the top block 5 or the tension block 4 is located is subjected to sexual test.
Borrow by above-mentioned structure, through the setting of a plurality of pulling force pieces 4, conveniently carry out anti negative pressure suction load test to the local area that tests 2 differences, in addition, be connected through fixed subassembly between two adjacent pulling force pieces 4, utilize fixed subassembly with a plurality of pulling force pieces 4 fixed mutually or phase separation to conveniently test the anti negative pressure suction load in the not equidimension region of testing 2, test flexibility is good, better satisfying experimental demand.
As a preferred embodiment of this embodiment, as shown in fig. 2, 3 and 4, the fixing assembly includes an insertion block 13 and an operating element, one side end of the pulling block 4 is provided with a sliding slot 12, the insertion block 13 is slidably connected in the sliding slot 12, the operating element is connected between the insertion block 13 and the pulling block 4, the other side end of the pulling block 4 is provided with a slot 16 adapted to the insertion block 13, as shown in fig. 6, the lower side end of the top block 5 is also provided with a slot 16 adapted to the insertion block 13, the insertion block 13 on one pulling block 4 is slidably inserted into the slot 16 on the other pulling block 4 along the sliding slot 12 to fix the two adjacent pulling blocks 4, the insertion block 13 on one pulling block 4 is moved out of the slot 16 on the other pulling block 4 to separate the two adjacent pulling blocks 4, when a negative pressure suction load test is performed on a local area of the test piece 2, the plurality of tension blocks 4 which do not need to participate in the test are fixed to each other, so that the test area where the tension blocks 4 participating in the test are located is not easily interfered.
As a preferred embodiment of this embodiment, as shown in fig. 2, 3 and 4, the operating element includes a shifting block 15, an end surface of the tension block 4 away from the connecting cover 3 is provided with an operation opening 14 communicated with the sliding groove 12, the shifting block 15 is fixedly connected to a side end of the insertion block 13 and penetrates through the operation opening 14, and an operator can drive the insertion block 13 on one tension block 4 to be inserted into or removed from the insertion groove 16 on the other tension block 4 by shifting the shifting block 15.
In a preferred embodiment of the present embodiment, the insert 13 is a ferromagnetic block, such as a stainless steel block.
As shown in fig. 4, the inner wall of the screen mesh of the slot 16 is fixedly connected with a first magnetic attraction block 18 matched with the insertion block 13, after the insertion block 13 on one tension block 4 is inserted into the slot 16 on the other tension block 4, the insertion block 13 can be stably positioned in the slot 16 under the action of the first magnetic attraction block 18, and is not easy to move out of the slot 16 under the non-artificial action, so that the fixing effect of the two adjacent tension blocks 4 is better.
As a preferred embodiment of this embodiment, as shown in fig. 4, a second magnetic attraction block 17 adapted to the insertion block 13 is fixedly connected to an inner wall of the sliding slot 12, and after the insertion block 13 on one tension block 4 is moved out of the slot 16 on the other tension block 4, the insertion block 13 can be stably located in the sliding slot 12 under the action of the second magnetic attraction block 17, and is not easily moved out of the sliding slot 12 under an artificial action, so that the test area where the tension block 4 participating in the test is located is not easily interfered.
As a preferred embodiment of this embodiment, as shown in fig. 1 and 7, the load measuring device includes a load sensor 7, a wire harness post 11 and a plurality of pull ropes 8, an upper end of the wire harness post 11 is fixedly connected to a measuring end of the load sensor 7 through a connecting rope 10, one ends of the pull ropes 8 are fixedly connected to a lower end of the wire harness post 11, a plurality of fixing members are provided, and two fixing members are respectively and fixedly connected to the other ends of the pull ropes 8, when testing a large area, especially when testing an irregular large area, the pull ropes 8 are respectively connected to the fixing members on the pull blocks 4 through the fixing members two at the lower ends thereof, so that the test is more stable, and the distributed test is also facilitated.
As a preferred implementation manner of this embodiment, as shown in fig. 3, 4, and 7, the first fixing part includes a fixing ring 6, and the second fixing part includes a hook 9 adapted to the fixing ring 6, and compared with the prior art in which the fixing ring 6 is directly fixed by a steel wire rope, the hook 9 and the fixing ring 6 are matched, which facilitates the fixing and separating operations and is more convenient to use.
As a preferred embodiment of this embodiment, as shown in fig. 7, a plurality of hanging rings 19 are fixedly connected to the side end of the wire-tying column 11, the hanging rings 19 are adapted to the plurality of hooks 9, and the hooks 9 not involved in connecting the fixing ring 6 can be hung on the hanging rings 19 at the side end of the wire-tying column 11, so that on one hand, a good storage effect can be achieved, and on the other hand, the problem that the redundant hooks 9 are accidentally hung on the fixing ring 6 in the region not involved in the test, which may cause interference to the test, can be avoided.
The working principle of the invention is as follows:
by means of the insertion block 13 on one tension block 4 sliding along the sliding groove 12 to be inserted into the insertion groove 16 on the other tension block 4, the fixing between two adjacent tension blocks 4 is realized, a plurality of tension blocks 4 are fixed in the same way, the tests of areas with different sizes are realized, the inserting block 13 on one tension block 4 is moved out from the inserting groove 16 on the other tension block 4, the separation between two adjacent tension blocks 4 is realized, a plurality of tension blocks 4 which do not need to participate in the test are fixed, the column shape of the test piece 2 can be used for fixing a plurality of tension blocks 4 which do not need to participate in the test, thereby being not easy to interfere the testing area where the tensile blocks 4 participating in the test are positioned, fixing or separating a plurality of tensile blocks 4 by utilizing the fixing component, therefore, the negative pressure resistant suction loads of different size areas of the test piece 2 can be conveniently tested, the test flexibility is good, and the test requirements are better met.
During the test, couple 9 on the load measuring piece articulates with solid fixed ring 6 on the pulling force piece 4 mutually, thereby test 2 regions of test piece at pulling force piece 4 place, for directly fixed mutually with solid fixed ring 6 with wire rope with prior art, couple 9 and solid fixed ring 6 cooperate, convenient fixed and separation operation, it is more convenient to use, in the test process, can hang couple 9 that does not participate in connecting solid fixed ring 6 and establish on the link 19 of restrainting line post 11 side, can play better effect of accomodating on the one hand, on the other hand can avoid unnecessary couple 9 unexpected to hang and establish on solid fixed ring 6 of the regional department that does not participate in the test, cause the interference for the test.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (8)
1. The utility model provides a quiet intensity test device of aircraft antenna house negative pressure aerodynamic load, include load measurement spare, mount pad (1) and fixed connection in test piece (2) of mount pad (1) upper end, its characterized in that: the outer surface coating of test piece (2) has connecting cover (3), the outer fixed surface of connecting cover (3) has laid kicking block (5) and a plurality of pulling force piece (4), kicking block (5) are located on the top surface of connecting cover (3), and are a plurality of pulling force piece (4) evenly distributed in on the side surface of connecting cover (3), adjacent two be connected with fixed subassembly between pulling force piece (4), pulling force piece (4) with be connected with fixed subassembly equally between kicking block (5), kicking block (5) and a plurality of equal fixedly connected with mounting one is located at the center of pulling force piece (4), fixedly connected with on the load measurement spare with the mounting two of a mounting looks adaptation.
2. The aircraft radome negative pressure pneumatic load static strength test device according to claim 1, characterized in that: the fixed component comprises an inserting block (13) and an operating piece, a sliding groove (12) is formed in one side end of the tension block (4), the inserting block (13) is connected to the sliding groove (12) in a sliding mode, the operating piece is connected between the inserting block (13) and the tension block (4), a slot (16) matched with the inserting block (13) is formed in the other side end of the tension block (4), and a slot (16) matched with the inserting block (13) is formed in the lower side end of the top block (5) in the same mode.
3. The aircraft radome negative pressure pneumatic load static strength test device according to claim 2, characterized in that: the operating piece comprises a shifting block (15), an operating opening (14) communicated with the sliding groove (12) is formed in the end face, far away from the connecting cover (3), of the tension block (4), and the shifting block (15) is fixedly connected to the side end of the inserting block (13) and penetrates through the operating opening (14).
4. The aircraft radome negative pressure pneumatic load static strength test device according to claim 3, wherein: the insert block (13) is a ferromagnetic block, and the inner wall of the screen of the slot (16) is fixedly connected with a magnetic attraction block I (18) matched with the insert block (13).
5. The aircraft radome negative pressure pneumatic load static strength test device according to claim 4, wherein: the inner wall of the sliding groove (12) is fixedly connected with a second magnetic suction block (17) matched with the inserting block (13).
6. The aircraft radome negative pressure pneumatic load static strength test device according to claim 1, characterized in that: load measurement spare includes load sensor (7), bunch post (11) and a plurality of stay cord (8), the upper end of bunch post (11) through connecting rope (10) fixed connection in the measurement end of load sensor (7), it is a plurality of the one end of stay cord (8) all with the lower extreme fixed connection of bunch post (11), mounting two is provided with a plurality ofly, and a plurality of mounting two respectively fixed connection in a plurality of the other end of stay cord (8).
7. The aircraft radome negative pressure pneumatic load static strength test device according to claim 6, wherein: the first fixing piece comprises a fixing ring (6), and the second fixing piece comprises a hook (9) matched with the fixing ring (6).
8. The aircraft radome negative pressure pneumatic load static strength test device according to claim 7, wherein: the side end of the wire bundling post (11) is fixedly connected with a plurality of hanging rings (19), and the hanging rings (19) are matched with the hooks (9).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110978446.1A CN113640125B (en) | 2021-08-24 | 2021-08-24 | Negative pressure pneumatic load static strength test device for aircraft radome |
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| CN202110978446.1A CN113640125B (en) | 2021-08-24 | 2021-08-24 | Negative pressure pneumatic load static strength test device for aircraft radome |
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| CN113640125B CN113640125B (en) | 2024-01-30 |
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| CN113640125B (en) | 2024-01-30 |
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