CN109781515A - A kind of high speed impact test bullet percussion lock - Google Patents
A kind of high speed impact test bullet percussion lock Download PDFInfo
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- CN109781515A CN109781515A CN201910259667.6A CN201910259667A CN109781515A CN 109781515 A CN109781515 A CN 109781515A CN 201910259667 A CN201910259667 A CN 201910259667A CN 109781515 A CN109781515 A CN 109781515A
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- gun barrel
- female connector
- butt tube
- high pressure
- bullet
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- 238000009527 percussion Methods 0.000 title claims abstract description 28
- 238000009863 impact test Methods 0.000 title claims abstract description 20
- 238000012360 testing method Methods 0.000 claims abstract description 59
- 230000006835 compression Effects 0.000 claims abstract description 24
- 238000007906 compression Methods 0.000 claims abstract description 24
- 239000011324 bead Substances 0.000 claims abstract description 23
- 230000004807 localization Effects 0.000 claims description 7
- 238000003032 molecular docking Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 239000003245 coal Substances 0.000 abstract description 6
- 239000007769 metal material Substances 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 9
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002360 explosive Substances 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 229910001234 light alloy Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to carry out explosion-proof performance detection test field, specifically a kind of high speed impact test bullet percussion lock to the metal material arrived used in the process of coal production.Gun barrel tip inside close to butt tube is circumferentially at least provided with a through-hole, it is opposite with through-hole to being provided with the blind hole that can accommodate locking spring in female connector, one end of the locking spring is fixed in blind hole, the other end is connected with compression bead, compression bead protrudes into through-hole and stretches out gun barrel inner wall, the test bullet with gun barrel inner wall in clearance fit is equipped in the gun barrel outside compression bead, level is installed with push rod in the high pressure tank opposite with test bullet, push rod protrudes into butt tube, and butt tube docks the limit that the free end of rear push-rod can push test bullet to be detached from compression bead with to female connector.Controling and monitoring for percussion speed may be implemented in the present invention, meets the demand of impact friction spark test apparatus, can meet test demand by the speed of the pressure Adjustment Tests bullet of adjusting high pressure gas.
Description
Technical field
The present invention relates to carry out explosion-proof performance detection test field, tool to the metal material arrived used in the process of coal production
Body is a kind of high speed impact test bullet percussion lock.
Background technique
During coal production, device therefor, instrument, instrument be often subject to external force collision, friction and generate high warm trace
With high temperature spark.Under certain condition, Gao Wenre trace and high temperature spark can cause coal mine gas and dust explosion accident.Therefore it rubs
Wiping spark is to cause one of potential incendiary source of coal mine gas from explosion.The chemical property of metal material itself is main influence friction fire
Flower is ignited one of factor, and the rate of igniting of the alloy material especially containing elements such as Mg, Sr is higher.Therefore coal mine metal material is necessary
The metal that limitation or limitation use chemical property more active.Under the premise of test constitutes consistent with alloy material, pass through reality
Testing research has shown that shock height, angle of attack, the weight of alluvium and environmental condition all have an impact to friction spark situation of igniting.
Impact friction spark test apparatus is mainly the impeller and shell, light-alloy for testing the equipment such as some mine fans
Whether the generated spark after rubbing such as light metal shell of hoisting container and instrument can ignite explosive gas.
Its course of work is to manufacture the metal material of equipment under test at test bullet and high speed impact breadboard by regulation,
By projectile transmitting device, make to test bullet by equal or close to the maximum value shock that may be caused danger under actual working conditions
High speed impact breadboard with the dangerous angle for most easily producing friction spark, to simulate tested metal under high speed impact operating condition
The process that material friction spark generates.Bullet and baffle is made in the metal of pairing in test, by making bullet in certain speed
Impact friction is generated to the baffle that is placed in explosive gas under degree, whether the spark for observing generation can ignite explosive gas.
But relevant report that is current and having no the bullet percussion lock about high-speed friction spark-testing.
Summary of the invention
The present invention lacks the defect for lacking bullet percussion lock in high-speed friction spark-testing to make up in the prior art,
Provide a kind of high speed impact test bullet percussion lock.
The present invention is achieved by the following technical solutions: a kind of high speed impact test bullet percussion lock, including machine
Frame is supported horizontally on the gun barrel of rack upper surface, is supported in rack upper surface and is located at the linear bearing at gun barrel rear, is located at straight
Spool holds the high pressure tank at rear, is supported in rack upper surface and is located at the electric pushrod at high pressure tank rear,
Horizontal on the high pressure tank to be equipped with the butt tube being connected with high pressure tank, the butt tube penetrates linear bearing
Interior and inner ring with linear bearing is interference fitted, and has been threadedly engaged spring adjusting nut on the gun barrel opposite with butt tube, has been leaned on
The gun barrel upper ring cap of spring adjusting nut one end of nearly butt tube has reset spring, and gap is matched on the gun barrel outside reset spring
Conjunction has to female connector, is equipped with and the position-stopping plate to female connector limit cooperation positioned to the gun barrel end fixed ring outside female connector；
It is circumferentially at least provided with a through-hole close to the gun barrel tip inside of butt tube, it is opposite with through-hole to being provided with and can hold in female connector
Receive the blind hole of locking spring, one end of the locking spring is fixed in blind hole, the other end is connected with compression bead, and compression bead protrudes into through-hole
It is interior and stretch out gun barrel inner wall, be equipped in the gun barrel outside compression bead with gun barrel inner wall be in clearance fit test bullet, stretch out
The compression bead of gun barrel inner wall and the head of test bullet limit and cooperate, and level is installed in the high pressure tank opposite with test bullet
Push rod, push rod protrude into butt tube, and butt tube docked with to female connector rear push-rod free end can push test bullet be detached from
The limit of compression bead；
The loading line being connected with high pressure tank is connected on the high pressure tank, loading line one end is connected to air
On compressor, electric-air valve is installed on the loading line, the pushed section of the electric pushrod can push high pressure tank to make
Butt tube is docked with to female connector.
As the further improvement of technical solution of the present invention, the tail portion of the test bullet is provided with along center line to push away with push rod
The locating slot of dynamic cooperation.
As the further improvement of technical solution of the present invention, the free end of the push rod integrally formed with locating slot gap
The localization handspike of cooperation, and localization handspike end and locating slot slot bottom push and cooperate.
As the further improvement of technical solution of the present invention, it is described test bullet head be hemisphere, ball as with
Hemisphere diameter is equal and integrally formed cylinder.
As the further improvement of technical solution of the present invention, in docking inside pipe wall to female connector end loops to one at
Type has positioning ring, and the positioning ring outer circle is circumferentially provided with the annular groove for accommodating the first O-ring, the circumferential direction of first O-ring
Outside with butt up against to female connector end dock inside pipe wall sealing cooperate.
As the further improvement of technical solution of the present invention, the position-stopping plate section is stepped, and the first stepped part
The inner circle clearance fit of plane of structure and positioning ring, the vertical face of second step ladder and the end stop bit of positioning ring cooperate.
As the further improvement of technical solution of the present invention, it is O-shaped that the circumferential direction inside to female connector is provided with receiving second
The annular groove of circle, circumferential inside and the sealing of gun barrel outer wall of second O-ring cooperate.
As the further improvement of technical solution of the present invention, the high pressure tank is equipped with middle part, described electronic to push away
The pushed section of bar and middle part, which push, to be cooperated.
Loading line as the further improvement of technical solution of the present invention, between the electric-air valve and air compressor
On pneumatic transmitter is installed.
As the further improvement of technical solution of the present invention, front and back is pacified respectively along its length on the gun barrel of transmitting terminal
Equipped with photoelectric measure speeding sensor.
High speed impact test bullet percussion lock of the present invention, compensates for shortage high-speed friction spark in the prior art
Control and the prison of percussion speed may be implemented using high pressure gas as the energy in the defect for lacking bullet percussion lock in test
It surveys, meets the demand of impact friction spark test apparatus, the speed of the pressure Adjustment Tests bullet of adjusting high pressure gas can be passed through
Degree, meets test demand.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 be high speed impact test bullet percussion lock of the present invention in butt tube with female connector is docked after structure
Schematic diagram.
Fig. 2 be high speed impact test bullet percussion lock of the present invention in butt tube with female connector is docked before structure
Schematic diagram.
Fig. 3 is the partial longitudinal section of Fig. 1.
Fig. 4 is the partial enlarged view of Fig. 3.
In figure: 1- rack, 2- gun barrel, 3- linear bearing, 4- high pressure tank, 5- electric pushrod, 6- butt tube, 7- spring
Adjusting nut, 8- reset spring, 9- test bullet to female connector, 10- position-stopping plate, 11- locking spring, 12- compression bead, 13-, and 14- is pushed away
Bar, 15- loading line, 16- air compressor, 17- electric-air valve, 18- locating slot, 19- localization handspike, 20- photoelectric velocity measurement pass
Sensor, 21- positioning ring, the first O-ring of 22-, the second O-ring of 23-, 24- middle part, 25- pneumatic transmitter.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical solution of the present invention will be carried out below
Detailed description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art are obtained all without making creative work
Other embodiment belongs to the range that the present invention is protected.
Technical solution of the present invention is described in detail with reference to the accompanying drawing.
A kind of high speed impact test bullet percussion lock, including rack 1, are supported horizontally on the gun barrel of 1 upper surface of rack
2, it is supported in 1 upper surface of rack and is located at the linear bearing 3 at 2 rear of gun barrel, the high pressure tank 4 positioned at 3 rear of linear bearing,
It is supported in 1 upper surface of rack and is located at the electric pushrod 5 at 4 rear of high pressure tank,
Horizontal on the high pressure tank 4 to be equipped with the butt tube 6 being connected with high pressure tank 4, the butt tube 6 penetrates straight line
It is interference fitted in bearing 3 and with the inner ring of linear bearing 3, has been threadedly engaged spring adjusting on the gun barrel 2 opposite with butt tube 6
Nut 7,2 upper ring cap of gun barrel close to 7 one end of spring adjusting nut of butt tube 6 have reset spring 8, are located at outside reset spring 8
Gun barrel 2 on clearance fit have to female connector 9, match positioned at being equipped with to the 2 end fixed ring of gun barrel outside female connector 9 with to the limit of female connector 9
The position-stopping plate 10 of conjunction；
It is circumferentially at least provided with a through-hole close to 2 tip inside of gun barrel of butt tube 6, it is opposite with through-hole to being provided in female connector 9
The blind hole of locking spring 11 can be accommodated, one end of the locking spring 11 is fixed in blind hole, the other end is connected with compression bead 12, is pressed
Pearl 12 protrudes into through-hole and stretches out 2 inner wall of gun barrel, is equipped in the gun barrel 2 outside compression bead 12 and matches with 2 inner wall of gun barrel in gap
The test bullet 13 of conjunction, the head of the compression bead 12 and test bullet 13 of stretching out 2 inner wall of gun barrel, which limits, to be cooperated, with test 13 phase of bullet
Pair high pressure tank 4 in level be installed with push rod 14, push rod 14 protrudes into butt tube 6, and butt tube 6 is docked with to female connector 9
The free end of rear push-rod 14 can push the limit of the test disengaging compression bead 12 of bullet 13；
The loading line 15 being connected with high pressure tank 4, the connection of 15 one end of loading line are connected on the high pressure tank 4
In on air compressor 16, being equipped with electric-air valve 17 on the loading line 15, the pushed section of the electric pushrod 5 can be pushed
High pressure tank 4 docks butt tube 6 with to female connector 9.
In use, test bullet 13 is placed in gun barrel 2, due to the position-limiting action of compression bead 12 so that butt tube 6 with to female connector
9, which test bullet 13 before docking, to slide in gun barrel 2.Before docking, starts air compressor 16, be full of in loading line 15
High pressure gas starts electric pushrod 5, and the pushed section of electric pushrod 5 pushes high pressure tank 4 to move, and butt tube 6 is in linear bearing 3
Guiding under, butt tube 6 is connected to each other with to female connector 9, due to between female connector 9 and gun barrel 2 be in clearance fit, to female connector 9
Small size displacement (displacement range is between 0.5-1cm) can horizontally occur, reset spring 8 is compressed at this time, so that docking
Set 9 realizes closed, the promotion test bullet 13 of push rod 14, test bullet 13 and 12 compression fit of compression bead with 6 closed butt joint of butt tube
And further such that locking spring 11 compresses, so that test bullet 13 further diverges from the limit of compression bead 12, test bullet 13
It moving, opens electric-air valve 17 at this time, the high pressure gas in loading line 15 quickly fills with high pressure tank 4, and into
One step enters test 13 rear of bullet by the space between push rod 14 and butt tube 6, pushes the test bullet 13 of movement fast
Speed by gun barrel 2, finally hit out of gun barrel 2.It tests after bullet 13 completes test, closes air compressor 16 and electronic
The pushed section of air valve 17, electric pushrod 5 moves forwards, and butt tube 6 separates and restores with to female connector 9 under the guiding of linear bearing 3
To original state, reset spring 8, which pushes, restores to position-stopping plate 10 female connector 9.When it is implemented, of the reset spring 8
Tight state can be adjusted by the tightness of adjustment spring adjusting nut 7.In the present invention, the quantity of the compression bead 12 is preferred
It is three, and is evenly distributed in gun barrel 2.
It when specifically used, is pushed for the ease of 14 pairs of test bullets 13 of push rod, the tail portion of the test bullet 13 is along center
Line is provided with the locating slot 18 that cooperation is pushed with push rod 14.
In order to push the accurate positionin of 14 pairs of push rod test bullets 13, the free end of the push rod 14 is integrally formed
There is the localization handspike 19 with 18 clearance fit of locating slot, and 19 end of localization handspike and 18 slot bottom of locating slot push and cooperate.
When it is implemented, the head of the test bullet 13 is hemisphere, ball is as equal with hemisphere diameter and one
Body formed cylinder.Convenient for the percussion of test bullet 13, the ball body of cylinder pushes convenient for push rod 14 to be tested on hemispheroidal head
Bullet 13.
Specifically, making full use of the pressure of high pressure gas in order to preferably realize butt tube 6 and to closed between female connector 9
Power, in 6 inner wall of butt tube to 9 end circumferential direction of female connector integrally formed with positioning ring 21,21 outer circle of positioning ring is along circle
Zhou Kaiyou accommodates the annular groove of the first O-ring 22, the circumferential outside of first O-ring 22 with butt up against to 9 end of female connector
The sealing cooperation of 6 inner wall of butt tube.
Invention further provides a kind of specific embodiment of position-stopping plate 10, i.e., described 10 section of position-stopping plate is in ladder
Shape, and the inner circle clearance fit of the plane of structure of the first stepped part and positioning ring 21, the vertical face of second step ladder and the end of positioning ring 21
The cooperation of portion's stop bit.
Further, in order to preferably realize that closed between female connector 9 and gun barrel 2, the inside to female connector 9 is along circle
Zhou Kaiyou accommodates the annular groove of the second O-ring 23, and circumferential inside and the sealing of 2 outer wall of gun barrel of second O-ring 23 cooperate.
Preferably, in order to avoid the pushed section of electric pushrod 5 causes to damage when pushing to high pressure tank 4, the high pressure
Air accumulator 4 is equipped with middle part 24, and the pushed section of the electric pushrod 5 and middle part 24, which push, to be cooperated.This 24 structure of middle part can
It is certainly of the invention with as shown in Figure 3 including being supported in the support rod on high pressure tank 4 and the support plate on support rod
It is not limited only to structure shown on figure.
In order to preferably control the percussion speed of test bullet 13, between the electric-air valve 17 and air compressor 16
Pneumatic transmitter 25 is installed on loading line 15.When specifically used, when pneumatic transmitter 25 detects in loading line 15
After high-pressure gas pressure reaches predetermined value, control electric-air valve 17 is opened, so that the percussion speed of test bullet 13 reaches default
Speed.
For the ease of the impact velocity of monitoring test bullet 13, front and back is divided along its length on the gun barrel 2 of transmitting terminal
Photoelectric measure speeding sensor 20 is not installed.Combined using photoelectric measure speeding sensor 20 with pneumatic transmitter 25, can in order to
Test initial stage obtains the impact velocity of test bullet 13 corresponding under different high-pressure gas pressures by test.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of high speed impact test bullet percussion lock, which is characterized in that including rack (1), be supported horizontally on rack (1)
The gun barrel (2) of upper surface is supported in rack (1) upper surface and is located at the linear bearing (3) at gun barrel (2) rear, is located at linear axis
The high pressure tank (4) for holding (3) rear is supported in rack (1) upper surface and is located at the electric pushrod at high pressure tank (4) rear
(5),
It is horizontal on the high pressure tank (4) to be equipped with the butt tube (6) being connected with high pressure tank (4), the butt tube (6)
It penetrates in linear bearing (3) and is interference fitted with the inner ring of linear bearing (3), spiral shell on the gun barrel (2) opposite with butt tube (6)
Line is combined with spring adjusting nut (7), and gun barrel (2) upper ring cap close to spring adjusting nut (7) one end of butt tube (6) has multiple
Position spring (8), being located at clearance fit on the gun barrel (2) of reset spring (8) outside has to female connector (9), is located at the rifle to female connector (9) outside
(2) end fixed ring is managed to be equipped with and the position-stopping plate (10) to female connector (9) limit cooperation；
Gun barrel (2) tip inside close to butt tube (6) is circumferentially at least provided with a through-hole, opposite with through-hole to female connector (9)
It is inside provided with the blind hole that can accommodate locking spring (11), one end of the locking spring (11) is fixed in blind hole, the other end connects
Have compression bead (12), compression bead (12) protrudes into through-hole and stretch out gun barrel (2) inner wall, is located in the gun barrel (2) of compression bead (12) outside and sets
There is the test bullet (13) with gun barrel (2) inner wall in clearance fit, stretches out the compression bead (12) and test bullet of gun barrel (2) inner wall
(13) head limits cooperation, and opposite high pressure tank (4) interior level is installed with push rod (14), push rod with test bullet (13)
(14) it protrudes into butt tube (6), and butt tube (6) can push test with the free end for docking rear push-rod (14) to female connector (9)
Bullet (13) is detached from the limit of compression bead (12)；
The loading line (15) being connected with high pressure tank (4), loading line (15) are connected on the high pressure tank (4)
One end is connected on air compressor (16), is equipped with electric-air valve (17), the electric pushrod on the loading line (15)
(5) pushed section can push high pressure tank (4) to dock butt tube (6) with to female connector (9).
2. a kind of high speed impact test bullet percussion lock according to claim 1, which is characterized in that the expeimental cartridge
The tail portion of ball (13) is provided with the locating slot (18) that cooperation is pushed with push rod (14) along center line.
3. a kind of high speed impact test bullet percussion lock according to claim 2, which is characterized in that the push rod
(14) free end integrally formed with the localization handspike (19) with locating slot (18) clearance fit, and localization handspike (19) end with
Locating slot (18) slot bottom pushes cooperation.
4. a kind of high speed impact test bullet percussion lock according to claim 1 or 2 or 3, which is characterized in that described
The head for testing bullet (13) is hemisphere, and ball is as cylinder equal and integrally formed with hemisphere diameter.
5. a kind of high speed impact test bullet percussion lock according to claim 1 or 2 or 3, which is characterized in that be located at
In butt tube (6) inner wall to female connector (9) end circumferential direction integrally formed with positioning ring (21), positioning ring (21) outer circle is along circle
Zhou Kaiyou accommodates the annular groove of the first O-ring (22), the circumferential outside of first O-ring (22) with butt up against to female connector (9)
Butt tube (6) inner wall of end seals cooperation.
6. a kind of high speed impact test bullet percussion lock according to claim 5, which is characterized in that the position-stopping plate
(10) section is stepped, and the inner circle clearance fit of the plane of structure of the first stepped part and positioning ring (21), and second step ladder is indulged
The end stop bit of face and positioning ring (21) cooperates.
7. a kind of high speed impact test bullet percussion lock according to claim 1 or 2 or 3, which is characterized in that described
The annular groove for accommodating the second O-ring (23) is provided with to the circumferential direction inside of female connector (9), in the circumferential direction of second O-ring (23)
Side and the sealing of gun barrel (2) outer wall cooperate.
8. a kind of high speed impact test bullet percussion lock according to claim 1 or 2 or 3, which is characterized in that described
High pressure tank (4) is equipped with middle part (24), and the pushed section and middle part (24) of the electric pushrod (5), which push, to be cooperated.
9. a kind of high speed impact test bullet percussion lock according to claim 1 or 2 or 3, which is characterized in that described
Pneumatic transmitter (25) are installed on loading line (15) between electric-air valve (17) and air compressor (16).
10. a kind of high speed impact test bullet percussion lock according to claim 1 or 2 or 3, which is characterized in that position
In front and back is separately installed with photoelectric measure speeding sensor (20) along its length on the gun barrel (2) of transmitting terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910259667.6A CN109781515B (en) | 2019-04-02 | 2019-04-02 | Shot firing device for high-speed impact test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910259667.6A CN109781515B (en) | 2019-04-02 | 2019-04-02 | Shot firing device for high-speed impact test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109781515A true CN109781515A (en) | 2019-05-21 |
| CN109781515B CN109781515B (en) | 2024-04-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910259667.6A Active CN109781515B (en) | 2019-04-02 | 2019-04-02 | Shot firing device for high-speed impact test |
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| Country | Link |
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| CN (1) | CN109781515B (en) |
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| CN110455485A (en) * | 2019-08-21 | 2019-11-15 | 东北大学 | A kind of multiple spot lower multiple material blade thermal environment impact performance test device excited by impact |
| CN110470446A (en) * | 2019-08-21 | 2019-11-19 | 东北大学 | Shock and vibration, the lower material blade service reliability experimental provision again of high temperature excitation |
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|---|---|---|---|---|
| CN110455485A (en) * | 2019-08-21 | 2019-11-15 | 东北大学 | A kind of multiple spot lower multiple material blade thermal environment impact performance test device excited by impact |
| CN110470446A (en) * | 2019-08-21 | 2019-11-19 | 东北大学 | Shock and vibration, the lower material blade service reliability experimental provision again of high temperature excitation |
| CN110470446B (en) * | 2019-08-21 | 2020-08-07 | 东北大学 | Composite blade service reliability experimental device under impact, vibration and high-temperature excitation |
| CN110455485B (en) * | 2019-08-21 | 2020-08-07 | 东北大学 | Device for testing thermal environment impact performance of composite blade under multi-point impact excitation |
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| CN109781515B (en) | 2024-04-26 |
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