CN106895969A - A kind of fuselage stringer banjo fixing butt jointing test fixture - Google Patents
A kind of fuselage stringer banjo fixing butt jointing test fixture Download PDFInfo
- Publication number
- CN106895969A CN106895969A CN201710200426.5A CN201710200426A CN106895969A CN 106895969 A CN106895969 A CN 106895969A CN 201710200426 A CN201710200426 A CN 201710200426A CN 106895969 A CN106895969 A CN 106895969A
- Authority
- CN
- China
- Prior art keywords
- clamping plate
- stringer
- base board
- test fixture
- regulating base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
-
- 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
- G01N3/04—Chucks
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of fuselage stringer banjo fixing butt jointing test fixture, belong to aircraft stringer class formation experiment field.Including first clamping plate (4), second clamping plate (5) and regulating base board (7), wherein, first clamping plate (4) includes mainboard face and the stud (41 perpendicular to the mainboard face formed in side with second clamping plate (5), 51), two mainboard faces of clamping plate are present and edge strip (2) thickness identical thickness difference under the stringer, when testpieces covering (3) is clamped by the larger clamping plate of mainboard face thickness with the regulating base board (7), gap is formed between the covering and another clamping plate, the gap can accommodate the lower edge strip (2) of the stringer.It is connected with stringer web by middle clamp plate stud of the present invention, preferably eliminates influence of the additional bending moment to experiment examination area's stress distribution.Drastically increase the validity and authenticity of test data.
Description
Technical field
The invention belongs to aircraft stringer class formation experiment field, and in particular to a kind of fuselage stringer banjo fixing butt jointing test clamp
Tool.
Background technology
Fuselage stringer class formation is one of more important structure of aircraft, and its destruction will directly affect the complete of aircraft
Property, therefore when stringer class formation fatigue test is done, therefore, to assure that examine load distribution in region basic with actual airplane in experiment
Unanimously, and to ensure that experiment clamping zone can not in test premature degradation.At present, fuselage stringer class formation test fixture, no
The false additional stress that can preferably avoid moment of flexure from causing, causes experiment examination area's stress distribution and aircraft truth
It is inconsistent, and then there is the phenomenon of bare terminal end premature degradation, test data validity and authenticity are made a big impact.
The content of the invention
In order to solve the above problems, the present invention proposes a kind of fuselage stringer banjo fixing butt jointing test fixture, and it is right to eliminate
The untrue additional bending moment influence of stringer class formation, to improve fatigue test validity and authenticity.The length clamped by the fixture
Purlin mainly includes web and upper and lower edge strip, and wherein edge strip extends to certain side of web, formed " 2 " respectively from the two ends of web
Font structure, as shown in Fig. 2 in addition, the fixture is also held and mounted on the covering on lower edge strip.
Fuselage stringer banjo fixing butt jointing test fixture of the present invention mainly includes first clamping plate, second clamping plate and regulating base board,
Wherein, first clamping plate includes mainboard face and the stud perpendicular to the mainboard face formed in side, institute with second clamping plate
State regulating base board and be arranged on the first clamping plate and the second clamping plate away from the side of stud, two mainboard faces of clamping plate are present
With edge strip thickness identical thickness difference under the stringer, when testpieces covering is by the larger clamping plate of mainboard face thickness and the regulation
When base plate is clamped, gap is formed between the covering and another clamping plate, the gap can accommodate the lower edge strip of the stringer.
Preferably, also including backing plate, it is arranged on remaining after the lower edge strip of the stringer is placed in the gap
In space.
In such scheme preferably, the first clamping plate and second clamping plate are being set on the one side of regulating base board
There is step, rounding transition is set at the step.
In such scheme preferably, on the direction that test fixture extends to the stringer center, the regulating base board
Length of the length less than first clamping plate or second clamping plate.
In such scheme preferably, the first clamping plate is riveted with the covering, regulating base board.
In such scheme preferably, the second clamping plate is riveted with edge strip, covering and regulating base board under the stringer.
In such scheme preferably, the first clamping plate is clamping the web of the stringer with the stud of second clamping plate
Afterwards, fixed by rivet.
In such scheme preferably, the backing plate and covering, regulating base board and with the less clamping plate of mainboard face thickness
Riveting.
It is connected with stringer web by middle clamp plate stud of the present invention, preferably eliminates additional bending moment and experiment examination area is cut
The influence of face stress distribution, is distributed load basically identical with actual airplane；In this invention, by adjusting base plate thickness, can be with
Easily the load effect centre of form in experiment is adjusted, is easy to experiment to implement；Added by the multistage machine that carries out to clamping plate, make to cut
Face load change is more gentle, improves clamping zone fatigue behaviour.Having for test data is drastically increased using this invention
Effect property and authenticity.
Brief description of the drawings
Fig. 1 is the front view of a preferred embodiment of fuselage stringer banjo fixing butt jointing test fixture of the present invention.
Fig. 2 is the left view of embodiment illustrated in fig. 1.
Fig. 3 is the test fixture and stringer connection diagram of a preferred embodiment of the present invention.
Wherein, 1 is web, and 2 is lower edge strip, and 3 is covering, and 4 is first clamping plate, and 5 is second clamping plate, and 6 is backing plate, and 7 is tune
Section base plate, 8 is rivet, and 41 is stud, and 51 is stud.
Specific embodiment
To make the purpose, technical scheme and advantage of present invention implementation clearer, below in conjunction with the embodiment of the present invention
Accompanying drawing, the technical scheme in the embodiment of the present invention is further described in more detail.In the accompanying drawings, identical from start to finish or class
As label represent same or similar element or the element with same or like function.Described embodiment is the present invention
A part of embodiment, rather than whole embodiments.Embodiment below with reference to Description of Drawings is exemplary, it is intended to used
It is of the invention in explaining, and be not considered as limiting the invention.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.Under
Face is described in detail with reference to accompanying drawing to embodiments of the invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or position relationship of the instruction such as "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outward " are based on accompanying drawing institute
The orientation or position relationship for showing, are for only for ease of the description present invention and simplify description, rather than the dress for indicating or implying meaning
Put or element with specific orientation, with specific azimuth configuration and operation, therefore it is not intended that must be protected to the present invention
The limitation of scope.
The present invention proposes a kind of fuselage stringer banjo fixing butt jointing test fixture, its clamping stringer mainly include web with
Upper and lower edge strip, wherein edge strip extend to certain side of web respectively from the two ends of web, " 2 " font structure are formed, such as Fig. 2 institutes
Show, wherein, web 1 and lower edge strip 2 are clamped, meanwhile, fixture is also held and mounted on the covering 3 of the bottom of lower edge strip 2.
Fuselage stringer banjo fixing butt jointing test fixture of the present invention mainly includes first clamping plate 4, second clamping plate 5 and regulating base board
7, wherein, first clamping plate 4 includes mainboard face and the stud perpendicular to the mainboard face formed in side with second clamping plate 5
41st, 51, the regulating base board 7 is arranged on two clamping plates away from the side of stud, and two mainboard faces of clamping plate are present and the length
Edge strip thickness identical thickness difference under purlin, when testpieces covering 3 is pressed from both sides by the larger clamping plate of mainboard face thickness and the regulating base board 7
When holding, gap is formed between the covering 3 and another clamping plate, the gap can accommodate the lower edge strip 2 of the stringer.
With reference to Fig. 1, label 4 is first clamping plate, and 5 is second clamping plate, and two clamping plates are stretched in side (upper side in figure)
Go out stud, first clamping plate 4 includes stud 41, and second clamping plate 5 includes stud 51, two pieces of stud alignment, for clamping above-mentioned stringer
Web 1, with reference to Fig. 2 and Fig. 3.In Fig. 2 or Fig. 3,3 is covering, wherein, two clamping plates clamp the web 1 of stringer, two jointly
The mainboard face of block clamping plate clamps covering 3 and lower edge strip 2 jointly with regulating base board 7, so preferably eliminates additional bending moment to examination
The influence of examination area's stress distribution is tested, is distributed load basically identical with actual airplane.
In the one side (bottom side in Fig. 1, Fig. 2) away from stud, first clamping plate 4 has different height from second clamping plate 5
Degree, forms thickness difference, with reference to Fig. 2, the thickness of the thickness more than second clamping plate 5 of first clamping plate 4, so that when the lower edge strip 2 of stringer
During positioned at the lower section of second clamping plate 5, there is identical level height with first clamping plate, afterwards, in first clamping plate 4 and lower edge strip 2
Lower section when installing regulating base board 7 and covering 3, ensure that regulating base board 7 (actual contact for covering 3) is total to second clamping plate 5
With the lower edge strip 2 for clamping stringer.
In the present embodiment, also including backing plate 6, it is arranged on and is remained after the lower edge strip 2 of the stringer is placed in the gap
In remaining space.With reference to Fig. 2, the lower bolster limited width of stringer can be only filled between formed by second clamping plate 5 and covering 3
A part for gap, and another part then needs to use the backing plate 6 of suitable thickness to fill.
In the present embodiment, the first clamping plate 4 and second clamping plate 5 are being provided with platform on the one side of regulating base board
Rank, is set to rounding transition at the step.With reference to Fig. 1, transition shoulder is three layers, and one layer of the leftmost side is gripping section, is used for
Test fixture is clamped, and two sections of thickness that clamping plate extends to the right taper into, and uses rounding transition, many by carrying out to clamping plate
Level machine adds, and makes section load change more gentle, improves clamping zone fatigue behaviour.
In the present embodiment, on the direction that test fixture extends to the stringer center, the length of the regulating base board 7 is small
In first clamping plate 4 or the length of second clamping plate 5.With reference to Fig. 1, the length of the length less than second clamping plate 5 of regulating base board 7 schemed
Show the lower right-hand side of middle backing plate 6 without regulating base board, the design is, in order to avoid section load is mutated, to make to act at stringer section
Load change it is more gentle.
In the present embodiment, the test fixture also includes some rivets 8, and all fixed forms are riveting, including described
First clamping plate 4 and covering 3, regulating base board 7 (are riveted to one by first clamping plate 4 jointly with the riveting of the covering 3, regulating base board 7
Rise, be below similar to description equivalent)；The second clamping plate 5 is riveted with edge strip 2, covering 3 and regulating base board 7 under the stringer；It is described
The stud of first clamping plate 4 and second clamping plate 5 is fixed after the web 1 for clamping the stringer by rivet；And, work as institute
When stating test fixture including backing plate 6, the backing plate 6 and setting regulating base board 7 thereunder, covering 3 and it is disposed thereon
The less clamping plate of mainboard face thickness (second clamping plate 5 in Fig. 2) riveting of side.
It is further to note that in the present invention, by adjusting the thickness of regulating base board 7, can easily in experiment
The load effect centre of form is adjusted, and is easy to experiment to implement.Test load passes through frictional force between fixture and chuck and transmits.Fatigue examination
Result is tested to show：This invention significantly improves the validity and authenticity of test data.
It is connected with stringer web by middle clamp plate stud of the present invention, preferably eliminates additional bending moment and experiment examination area is cut
The influence of face stress distribution, is distributed load basically identical with actual airplane；In this invention, by adjusting base plate thickness, can be with
Easily the load effect centre of form in experiment is adjusted, is easy to experiment to implement；Added by the multistage machine that carries out to clamping plate, make to cut
Face load change is more gentle, improves clamping zone fatigue behaviour.Having for test data is drastically increased using this invention
Effect property and authenticity.
It is last it is to be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations.To the greatest extent
Pipe has been described in detail to the present invention with reference to the foregoing embodiments, it will be understood by those within the art that：It is still
Technical scheme described in foregoing embodiments can be modified, or which part technical characteristic is equally replaced
Change；And these modifications or replacement, do not make the essence of the essence disengaging various embodiments of the present invention technical scheme of appropriate technical solution
God and scope.
Claims (8)
1. a kind of fuselage stringer banjo fixing butt jointing test fixture, it is characterised in that：Mainly include first clamping plate (4), second clamping plate (5)
And regulating base board (7), wherein, first clamping plate (4) includes mainboard face with second clamping plate (5) and in the vertical of side formation
In the stud (41,51) in the mainboard face, the regulating base board (7) is arranged on the first clamping plate and the second clamping plate deviates from
The side of stud, two mainboard faces of clamping plate exist with edge strip (2) thickness identical thickness difference under the stringer, when testpieces is covered
When skin (3) is clamped by the larger clamping plate of mainboard face thickness with the regulating base board (7), the covering (3) and another clamping plate it
Between form gap, the gap can accommodate the lower edge strip (2) of the stringer.
2. fuselage stringer banjo fixing butt jointing test fixture as claimed in claim 1, it is characterised in that：Also include backing plate (6), set
After the gap is placed in when the lower edge strip (2) of the stringer in remaining space.
3. fuselage stringer banjo fixing butt jointing test fixture as claimed in claim 1, it is characterised in that：The first clamping plate (4) and
Second clamping plate (5) is provided with step on the one side away from regulating base board (7), and rounding transition is set at the step.
4. fuselage stringer banjo fixing butt jointing test fixture as claimed in claim 1, it is characterised in that：In test fixture to the length
On the direction that purlin center extends, the length of the regulating base board (7) is less than first clamping plate (4) or the length of second clamping plate (5).
5. fuselage stringer banjo fixing butt jointing test fixture as claimed in claim 1, it is characterised in that：The first clamping plate (4) with
The covering (3) and regulating base board (7) are riveted.
6. fuselage stringer banjo fixing butt jointing test fixture as claimed in claim 1, it is characterised in that：The second clamping plate (5) with
Edge strip (2), covering (3) and regulating base board (7) riveting under the stringer.
7. fuselage stringer banjo fixing butt jointing test fixture as claimed in claim 1, it is characterised in that：The first clamping plate (4) with
The stud of second clamping plate (5) is fixed after the web (1) for clamping the stringer by rivet.
8. fuselage stringer banjo fixing butt jointing test fixture as claimed in claim 2, it is characterised in that：The backing plate (6) and covering
(3), regulating base board (7) and riveted with the less clamping plate of mainboard face thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710200426.5A CN106895969A (en) | 2017-03-30 | 2017-03-30 | A kind of fuselage stringer banjo fixing butt jointing test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710200426.5A CN106895969A (en) | 2017-03-30 | 2017-03-30 | A kind of fuselage stringer banjo fixing butt jointing test fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106895969A true CN106895969A (en) | 2017-06-27 |
Family
ID=59193484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710200426.5A Pending CN106895969A (en) | 2017-03-30 | 2017-03-30 | A kind of fuselage stringer banjo fixing butt jointing test fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106895969A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107860649A (en) * | 2017-11-03 | 2018-03-30 | 天津科技大学 | One kind singly takes the anti-bending fixture of riveted joint and its design method |
| CN107933950A (en) * | 2017-12-11 | 2018-04-20 | 山东太古飞机工程有限公司 | A kind of attachment device for aircraft stringer |
| CN110501467A (en) * | 2019-09-19 | 2019-11-26 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | A kind of connection structure of wing box specimen of plane |
| WO2020107531A1 (en) * | 2018-11-30 | 2020-06-04 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | Upper wall end and wall plate connection integral corner box assembly |
-
2017
- 2017-03-30 CN CN201710200426.5A patent/CN106895969A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107860649A (en) * | 2017-11-03 | 2018-03-30 | 天津科技大学 | One kind singly takes the anti-bending fixture of riveted joint and its design method |
| CN107860649B (en) * | 2017-11-03 | 2020-06-05 | 天津科技大学 | Single-lap riveting joint bending-prevention clamp and design method thereof |
| CN107933950A (en) * | 2017-12-11 | 2018-04-20 | 山东太古飞机工程有限公司 | A kind of attachment device for aircraft stringer |
| WO2020107531A1 (en) * | 2018-11-30 | 2020-06-04 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | Upper wall end and wall plate connection integral corner box assembly |
| CN110501467A (en) * | 2019-09-19 | 2019-11-26 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | A kind of connection structure of wing box specimen of plane |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106895969A (en) | A kind of fuselage stringer banjo fixing butt jointing test fixture | |
| Foo et al. | Mechanical properties of Nomex material and Nomex honeycomb structure | |
| US7798014B2 (en) | Method and apparatus for testing composite materials | |
| CN206648810U (en) | A kind of fuselage stringer banjo fixing butt jointing test fixture | |
| EP3028979A1 (en) | Method for manufacturing an electrical contact arrangement and arrangement | |
| CN105253323B (en) | A kind of compression test frock of composite stiffened with cross-brace | |
| CN102944470A (en) | Bending test jig assembly, bending test jig and compression test jig | |
| CN107389441A (en) | A kind of Tensile Strength of Rock test system | |
| CN107063852A (en) | A kind of stringer class formation test fixture | |
| CN204613021U (en) | A kind of centering assembly for testing machine | |
| CN215004674U (en) | Adjustable axial loading test fixture for stiffened wall plate | |
| CN106525569B (en) | Shearing test piece of high-strength metal material | |
| CN105823688B (en) | A kind of bearing test method of aerofoil leading edge curved-surface structure | |
| CN211553486U (en) | Fatigue test piece for airplane stringer wallboard | |
| CN210034065U (en) | Honeycomb aluminum plate splicing apparatus | |
| CN213354881U (en) | Fatigue test piece for airplane stringer wallboard | |
| CN208125120U (en) | A kind of side lever angle displacement measuring device | |
| CN209416820U (en) | A kind of stretching clamping device of carbon filament | |
| CN209308736U (en) | A kind of pre-buried channel flow | |
| CN104832519B (en) | A kind of self-plugging rivet and its riveting intensity detection method | |
| CN209400309U (en) | A kind of corrugated board stretching experiment test specimen | |
| CN102062714A (en) | Fatigue test device and buffer for buffering rod-direction shock | |
| JP6657657B2 (en) | Test specimen for tensile test and tensile test method | |
| CN205538456U (en) | General clamping device of leather tensile test | |
| US2058537A (en) | Structural beam |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170627 |
|
| WD01 | Invention patent application deemed withdrawn after publication |