CN109187219A - Aircraft Special-Shaped Surface structural capacity heat test roof pressing type anti-deflection loading device - Google Patents
Aircraft Special-Shaped Surface structural capacity heat test roof pressing type anti-deflection loading device Download PDFInfo
- Publication number
- CN109187219A CN109187219A CN201810777370.4A CN201810777370A CN109187219A CN 109187219 A CN109187219 A CN 109187219A CN 201810777370 A CN201810777370 A CN 201810777370A CN 109187219 A CN109187219 A CN 109187219A
- Authority
- CN
- China
- Prior art keywords
- load
- mandril
- loading device
- jacking block
- deflection
- 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.)
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Classifications
-
- 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
- G01N3/18—Performing tests at high or low temperatures
-
- 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
-
- 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
- G01N2203/0019—Compressive
-
- 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
- G01N2203/0048—Hydraulic means
-
- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
- G01N2203/0228—Low temperature; Cooling means
Abstract
The invention discloses a kind of aircraft Special-Shaped Surface structural capacity heat test roof pressing type anti-deflection loading devices, successively include force structure, the load jacking block designed with the shape according to force structure, heating element, heater emission plate, load mandril, dynamometer, the load mandril passes through heater emission plate and heating element；The load mandril is threadedly coupled with dynamometer；It further include limit plate and spacing collar, the limit plate is threadedly coupled with dynamometer, and the spacing collar is made of inner cylinder and outer cylinder, changes spacing collar height by rotation.Special-Shaped Surface structure roof pressing type load anti-deflection loading device has the advantages that structural reliability is high, load(ing) point quantity is more, it is highly-safe to load, can unattended load in a kind of power heat test of the present invention, and have it is expansible, can designed capacity, suitable under different scales, different structure part, particular surroundings power heat integration test force load load.
Description
Technical field
The present invention is suitable for the heat integration of Flight Vehicle Structure power and tests to body structure surface progress roof pressing type load, and using top
Other test fields of pressure type load.
Background technique
For aerospace craft during transmitting, flight, Flight Vehicle Structure can face overload, Pneumatic pressure and thermal environment,
Under the influence of these loads, aircraft a possibility that there are structure destructions.Part-structure can by the way of loaded ring knot
Structure applies concentrated force load, thus the load that simulated flight device is subject in flight course, operating condition (200 lower for temperature
DEG C or less) certain metal structures can be applied using multiple spot punching and be pulled to using the outer compressive load of leather bag loading simulation
The load that the mode simulated flight device structure of load is subject to, while not influencing to apply thermal force to structure.
With the development of high-speed aircraft, the thermal force that aircraft is subject to is higher and higher, and highest is more than 1500 DEG C, Er Qie great
Amount uses bearing structure of the composite material as aircraft, and Flight Vehicle Structure large area uses airflow design, needs to abnormal shape
Face is loaded.Due to the superhigh temperature of structure, the application of thermal force will affect using leather bag load, and due to composite material device to hole
The sensitivity characteristic of defect, the mode that multiple spot punching application pulls to load will cause strong influence to structural bearing performance.With
Composite material is widely used in hypersonic aircraft as bearing structure, and " load of Special-Shaped Surface roof pressing type is anti-bias in power heat test
Turn to be safely loaded with device " for promoting the research and development of hypersonic aircraft to have great importance.
Summary of the invention
The purpose of the present invention is to provide aircraft Special-Shaped Surface structural capacity heat test roof pressing type anti-deflection loading devices, realize
Large-sized structural parts Special-Shaped Surface high temperature thermal force+power load, which is combined, to be safely loaded with.
A kind of aircraft Special-Shaped Surface structural capacity heat test roof pressing type anti-deflection loading device successively includes force structure, root
Load jacking block, heating element, heater emission plate, the load mandril, dynamometer designed with the shape according to force structure, the load top
Bar passes through heater emission plate and heating element；The load mandril is threadedly coupled with dynamometer；The loading device further includes
Limit plate and spacing collar, the limit plate are threadedly coupled with dynamometer, and the spacing collar is made of inner cylinder and outer cylinder, are passed through
Rotation changes spacing collar height.
Fluted in the load jacking block, loading has boss on mandril, the boss is embedded in groove, by groove and boss
Mutual limitation realize the limitation of load jacking block deflection angle.
The anti-deflection loading device further includes displacement meter, servo-cylinder, carries basis,
The load mandril includes mandril coolant jacket and water-stop sheet, and a sky is formed between mandril coolant jacket and water-stop sheet
Chamber carries out water supply cooling to load mandril by water pipe.
The force structure is special-shaped loading surface, and the heating element is quartzy lamp group.
Add flexible collet outside the load jacking block.
The wide 2mm high 4mm long 20mm of the wide 4mm depth 5mm long 30mm of the groove, boss.
Beneficial effects of the present invention are as follows:
Special-Shaped Surface structural capacity heat test roof pressing type anti-deflection loading device of the present invention loads jacking block according to Special-Shaped Surface
Sharp processing avoids stress in loading procedure from concentrating at profile-followed load jacking block, jacking block housing flexibility heat insulation felt.Jacking block and load are pushed up
Using the contact design of anti-deflection bulb between bar, guarantee that load jacking block is trying while not influencing Flight Vehicle Structure load deformation
It does not deflect during testing.It loads mandril to design using water cooling, guarantees mandril normal use in a high temperauture environment.Design is special
The limiting device of door carries out position limit to loading blocks and sets in a non-operative state, avoids loading blocks retraction and makes to heating element
At damage.
Special-Shaped Surface structural capacity heat test roof pressing type anti-deflection loading device of the present invention, may be implemented large-sized structural parts
Special-Shaped Surface high temperature thermal force+power load, which is combined, to be safely loaded with.It 1200 DEG C of test ambient temperature or more, may be implemented to add loading point connection
Load is closed, is designed according to test actual needs.This Special-Shaped Surface roof pressing type load anti-deflection is safely loaded with device, in hypoxemia
Carry out that there is significant advantage in power load load test under the unattended operation environments such as environment.The device can operate with a variety of using top
In the test of pressure type load, it is ensured that test safety.
Special-Shaped Surface structural capacity heat test roof pressing type anti-deflection loading device of the present invention, can satisfy gas oxygen environment,
For a long time, under ultra-high temperature condition, to large scale structure carry out multipoint excitation, and in the preparation process of test, test occur it is different
In normal situation, during test load fitting, the deflection limitation of jacking block is loaded in safe range.Load mandril occur it is non-can
When control retraction, spacing collar can effectively be limited amount of recovery, ensure that heating element, the safety for loading jacking block.
During the test, the deformation that testpieces occurs loads the gap design of the load bulb, boss and groove of jacking block, effectively
It ensure that load jacking block is deformed with testpieces and rotated, ensure that the accuracy that load applies.The present invention solves large size
Structural member, which carries out the safety issue of Special-Shaped Surface load multipoint excitation, this method when power heat integration test, has high reliability, can
To be tested under the conditions of unattended, it can be applied to a variety of use and concentrated force pressed to carry out load simulated structural test
In.
Detailed description of the invention
Fig. 1 is roof pressing type loading device schematic diagram of the present invention；
Fig. 2 is present invention load jacking block anti-deflection schematic device；
Wherein,
1- force structure 2- flexibility collet 3- loads jacking block 4- heating element 5- heater reflection plate 6- load top
One 8- dynamometer 9- nut of bar 7- nut, two 10- limit plate 11- spacing collar 12- displacement meter 13- servo-cylinder 14-
Carry basis 15- groove 16- load bulb concave surface 17- boss 18- load bulb convex surface 19- mandril coolant jacket 20- every
Water plate 21- water pipe 22- nipple
Specific embodiment
Further details of the technical solution of the present invention with reference to the accompanying drawings and detailed description.Obviously, institute
The embodiment of description is only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiment of the present invention,
Those skilled in the art's every other embodiment obtained without making creative work, belongs to the present invention and wants
Seek the range of protection.
It includes two aspects that Special-Shaped Surface structure roof pressing type, which loads safe design, first is that in load jacking block by self gravity or examination
During testing under emergency case, servo-cylinder bounces back suddenly, after bouncing back to a certain extent, there is load jacking block and damages heating by pressure
The possibility of element；Second is that during loading, when load jacking block is bonded testpieces surface, there is the possibility of deflection in load jacking block,
Cause loading position unreasonable, causes the improper destruction of testpieces.For first problem, is limited and loaded using spacing collar
The retraction ranges of oil cylinder protect heating element；For Second Problem, load between jacking block and load mandril using anti-
Deflection design, rotation is limited within the scope of ± 15 °, while not being influenced load jacking block in loading procedure and being deformed and turn with testpieces
It is dynamic.
Special-Shaped Surface structure roof pressing type load anti-deflection loading device signal is as shown in Figure 1, main composition portion in power heat test
It is divided into force structure 1, flexible collet 2, load jacking block 3, heating element 4, heater reflection plate 5, load mandril 6, nut one
7, dynamometer 8, nut 29, limit plate 10, spacing collar 11, displacement meter 12, servo-cylinder 13, carrying basis 14.Force structure
1 is testpieces abnormal shape loading surface, in large scale structure power heat test, generally there are multiple load(ing) points to load simultaneously, loads jacking block 3
It is designed according to force structure 1, to avoid stress from concentrating, to load jacking block 3 plus a flexible collet, while being tested with the shape
In heating process, heat-blocking action is played to load jacking block.It loads mandril 6 and passes through heater reflection plate 5 and heating element 4.Load
It using being threadedly coupled between mandril 6 and dynamometer 8, is fixed using nut 1, the displacement of the measurement load mandril of displacement meter 12
It measures while can also be used as Bit andits control.When test, which is abnormal, causes 13 trigger protection measure of load cylinder to bounce back, limit
Sleeve 11 can limit plate 10 to retraction carry out the limitation on stroke, heating element will not be contacted by making to load when jacking block 3 bounces back.Limit
Position sleeve 11 is made of inner cylinder and outer cylinder, is threadedly coupled, and is changed spacing collar height by rotation, is reached the effect of adjusting position
Fruit.
Load the signal of jacking block anti-bias rotary device as shown in Fig. 2, chief component be groove 15, load bulb concave surface 16,
Boss 17, load bulb convex surface 18, mandril coolant jacket 19, water-stop sheet 20, water pipe 21, nipple 22.Load the anti-bias of jacking block
Rotary device relies primarily on the mutual limitation limited to realize jacking block deflection angle of groove 15, boss 17, and 15 width 4mm of groove is deep
5mm long 30mm, 17 width 2mm high 4mm long 20mm of boss, after being installed, boss 17 is embedded in groove 15, and load jacking block and load are pushed up
Anti-bias rotary device is used between bar, and rotation is limited within the scope of ± 15 °.In the range, the loading position for loading jacking block is inclined
Turn within ± 15 °, it is in most cases, smaller on the carrying of testpieces structure influence, the examination of structural member is not influenced, for
Special structural member can targetedly be designed according to practical structures feature, to guarantee to meet test requirements document.Mandril
Coolant jacket 19, water-stop sheet 20 are the main part for loading mandril, form a cavity, are supplied by 21 pairs of load mandrils of water pipe
Water is cooling, guarantees normal use of the load mandril under thermal environment.Nipple 22 is connect with dynamometer 8, forms loading structure.
In addition, boss 17 and the angle of water pipe 21 are designed according to the cooling water pipe and electrode of reflecting plate, wanted when loading blocks are fixed on
After asking position, water pipe can avoid electrode and reflecting plate cooling water pipe.
During use, after heater is installed, load cylinder is installed in place for the invention, spacing collar,
Limit plate installs, and dynamometer is connected and fixed with oil cylinder.It loads mandril and passes through heater reflection plate, be installed to dynamometer
On, fastened by nut, then will load jacking block be installed to load mandril on, after installing, be affected by gravity, load jacking block with
Mandril fitting is loaded, mandril boss is embedded in jacking block groove, at this point, the relative position between jacking block and mandril is fixed.Pass through rotation
Mandril, by jacking block be adjusted to require load angle, then fasten dynamometer and load mandril between nut, fixed mandril with
Relative position between dynamometer.Adjust spacing collar height, multipoint excitation test in, each load(ing) point successively installs.
After installing, the position of heater is adjusted, heater is adjusted to suitable position.
Load jacking block use flexible high-temperature resistant collet protected, avoid load jacking block temperature it is excessively high, avoid jacking block
Direct contact test part；It loads jacking block and loads the anti-deflection design of mandril, it is ensured that when testing process action, jacking block is not
It deflects；Guarantee the safety of loading position；Using spacing collar, the amount of recovery of load bar is limited, guarantee test mistake
Cheng Zhong, under any circumstance, jacking block will not bounce back excess, avoid the damage to heating element.By being safely loaded with device, make
Power heat test is more safe and reliable, and by the automatic control of load, the unattended load at scene may be implemented.Make in spy
Under different environment, such as hypobaric, low-oxygen environment etc., carrying out multipoint excitation power heat integration test becomes reliable.
By taking a large-sized structural parts low-oxygen environment exerts oneself heat integration test as an example, testpieces shares 15 load(ing) points, structure
Part is using quartzy lamp group as heating element.Operating condition is more during the test, and test process is complicated, is the safety of guarantee test
Property, device is safely loaded with using this.It tests in implementation process, first heating element is installed in place, servo-cylinder is installed, adjust
Spacing collar, limit plate, load mandril, load jacking block are installed in place, are required according to the direction of load, to adding by whole good position
Carry mandril, load jacking block is fixed.After successively 15 load(ing) points are installed, the position of heating element is adjusted to formal test
Position, then spacing collar is adjusted, make to load mandril amount of recovery in home.After being installed, servo-cylinder by controlling automatically
System realizes the power load load of power heat integration test.
This example is realized in about 1500 DEG C of maximum temperature of heating, and test period length is greater than 6000s, load(ing) point quantity 15
It is a, it is tested under nitrogen low-oxygen environment.During test, the load of experience sagging moment operating condition, the load of hogging moment operating condition are abnormal
In the case of with testpieces disengage, load fitting etc. processes.Under safe design, load jacking block without obvious deflection, loading procedure with
Testpieces deformation follows degree height, damages without heating element, realizes large-scale knot under the conditions of long-time superhigh temperature multi-state
The power heat integration test of component is safely loaded with.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments are it will be apparent that as defined herein one for the patented technology personnel of this field
As principle can realize in other embodiments without departing from the present invention.Therefore, the present invention will not be limited
It is formed on the embodiments shown herein, and is to fit to most wide model consistent with the principles and novel features disclosed in this article
It encloses.
Claims (7)
1. a kind of aircraft Special-Shaped Surface structural capacity heat test roof pressing type anti-deflection loading device successively includes force structure, basis
Load jacking block that force structure designs with the shape, heating element, heater emission plate, load mandril, dynamometer, the load mandril
Across heater emission plate and heating element；The load mandril is threadedly coupled with dynamometer；It is characterized in that, further including limit
Plate and spacing collar, the limit plate are threadedly coupled with dynamometer, and the spacing collar is made of inner cylinder and outer cylinder, pass through rotation
Change spacing collar height.
2. anti-deflection loading device according to claim 1, which is characterized in that fluted in the load jacking block, load
There is boss on mandril, the boss is embedded in groove, realizes load jacking block deflection angle by the mutual limitation of groove and boss
Limitation.
3. anti-deflection loading device according to claim 1 or 2, which is characterized in that the anti-deflection loading device also wraps
Displacement meter, servo-cylinder, carrying basis are included, servo-cylinder is mounted on the basis of carrying, and displacement meter measures position when cylinder action
It moves.
4. anti-deflection loading device according to claim 1 or 2, which is characterized in that the load mandril includes that mandril is cold
But set and water-stop sheet form a cavity between mandril coolant jacket and water-stop sheet, carried out load mandril for water cooling by water pipe
But.
5. anti-deflection loading device according to claim 1 or 2, which is characterized in that the force structure is special-shaped load
Face, the heating element are quartzy lamp groups.
6. anti-deflection loading device according to claim 1 or 2, which is characterized in that outside the load jacking block plus flexible
Collet.
7. anti-deflection loading device according to claim 2, which is characterized in that the wide 4mm depth 5mm long of the groove
The wide 2mm high 4mm long 20mm of 30mm, boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810777370.4A CN109187219A (en) | 2018-07-16 | 2018-07-16 | Aircraft Special-Shaped Surface structural capacity heat test roof pressing type anti-deflection loading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810777370.4A CN109187219A (en) | 2018-07-16 | 2018-07-16 | Aircraft Special-Shaped Surface structural capacity heat test roof pressing type anti-deflection loading device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109187219A true CN109187219A (en) | 2019-01-11 |
Family
ID=64936611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810777370.4A Pending CN109187219A (en) | 2018-07-16 | 2018-07-16 | Aircraft Special-Shaped Surface structural capacity heat test roof pressing type anti-deflection loading device |
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| CN (1) | CN109187219A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113640140A (en) * | 2021-07-28 | 2021-11-12 | 南京航空航天大学 | High-temperature double-shaft strength tester and method for ceramic matrix composite turbine guide vane |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113640140A (en) * | 2021-07-28 | 2021-11-12 | 南京航空航天大学 | High-temperature double-shaft strength tester and method for ceramic matrix composite turbine guide vane |
| CN113640140B (en) * | 2021-07-28 | 2022-06-17 | 南京航空航天大学 | High-temperature double-shaft strength tester and method for ceramic matrix composite turbine guide vane |
| US11644382B2 (en) | 2021-07-28 | 2023-05-09 | Nanjing University Of Aeronautics And Astronautics | High-temperature biaxial strength tester for ceramic matrix composite (CMC) turbine vane and test method thereof |
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