CN206470035U - Gas launches draw-gear - Google Patents
Gas launches draw-gear Download PDFInfo
- Publication number
- CN206470035U CN206470035U CN201621325478.2U CN201621325478U CN206470035U CN 206470035 U CN206470035 U CN 206470035U CN 201621325478 U CN201621325478 U CN 201621325478U CN 206470035 U CN206470035 U CN 206470035U
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- China
- Prior art keywords
- cylinder
- piston
- guide rail
- gas
- gear
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- Withdrawn - After Issue
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Abstract
The utility model discloses a kind of gas ejection draw-gear, it includes air supply unit, piston-cylinder unit, traction unit, buffer and playback mechanism, piston-cylinder unit includes cylinder, piston and exhaust cabin, air supply unit is connected with the leading portion of cylinder, to be supplied between cylinder front wall and piston, the stage casing of cylinder is provided with exhaust cabin, air discharge duct is provided with the cylinder wall in exhaust cabin, the rear end of cylinder is provided with bumper, traction unit includes directive wheel, steel wire rope, guide rail and coaster, guide rail is arranged side by side with cylinder, one end of steel wire rope is connected via the front end of seal section and piston, steel wire rope is after directive wheel is oriented to, its other end is connected with the coaster being configured on guide rail, buffer is provided with below the end of guide rail, playback mechanism is provided with below the front end of guide rail.The compressed air pressure that the utility model is used can freely be adjusted according to testpieces speed requirement, and the precision of experiment is improved.
Description
Technical field
The utility model is related to a kind of gas ejection draw-gear, especially for missile launch test or impact test
Device.
Background technology
The mode that guided missile is launched using additionaling power mode is referred to as ejection.The device for providing additionaling power for MISSILE LAUNCHING claims
For catapult-launching gear, catapult-launching gear is the key that guided missile is succeeded in sending up, for catapult-launching gear, it has been carried out largely grinding both at home and abroad
Study carefully, have also been developed many catapult-launching gears, the advanced catapult-launching gear AMELT of US military development is successfully applied to F-102 aircrafts hair
" falcon " guided missile is penetrated, frazier Na Shi companies of Britain also have developed similar catapult-launching gear.The LAU-142/ that EDO companies of the U.S. develop
A Pneumatic ejection mechanisms are provided in F-22 aircrafts transmitting " AIM-120AMRAAM " guided missile.Domestic Qing'an Group Co., Ltd. and absolutely empty
The units such as missile research institute also progressively have developed certain model missile ejector.And with the development of scientific and technological level, it is existing
Catapult-launching gear can not meet current demand, such as ejection speed, existing catapult-launching gear speed about 10m/s, and newest technology
It is required that being 100m/s, because guided missile model is numerous, required catapult-launching gear is also a lot, develops catapult-launching gear and also faces many in itself
Problem, existing experimental study means only have live ammunition, and this mode has that cost is high, experiment uncertain factor is more, examination
Test the repeatable low feature of poor, test accuracy, supporting model development time and quality all it cannot be guaranteed that, and do not adapt to through
Ji, reliable, accurate requirement.
The content of the invention
The technical problem that the utility model is solved is：Overcoming the deficiencies in the prior art, there is provided one kind is economical, environmentally friendly, low
The high gas ejection draw-gear of dangerous, test accuracy, the experimental study for body ejection mechanism.
Gas ejection draw-gear of the present utility model includes air supply unit, piston-cylinder unit, traction unit, buffer and returned
Position mechanism, the piston-cylinder unit includes cylinder, piston and exhaust cabin, and the air supply unit is connected with the leading portion of the cylinder, uses
To be supplied between cylinder front wall and piston, the stage casing of the cylinder is provided with exhaust cabin, the cylinder in the exhaust cabin
It is provided with air discharge duct on wall, the rear end of the cylinder is provided with bumper, the traction unit includes directive wheel, steel wire rope, leads
Rail and coaster, the guide rail are arranged side by side with the cylinder, before one end of the steel wire rope is via seal section and the piston
End connection, the steel wire rope is after directive wheel is oriented to, and its other end is connected with the coaster being configured on the guide rail, the cunning
It is automobile-used to place testpieces, be provided with below the end of the guide rail below buffer, the front end of the guide rail be provided with it is described
Playback mechanism.
It is preferred that being each configured with LD lasers and timer in the both sides in the closed slide stage casing.
It is preferred that the front end of the piston is provided with acceleration transducer.
It is preferred that the guide rail is closed slide, 70mm~1000mm may be selected in its spacing.
The utility model has the beneficial effect that compared with prior art：
1st, the utility model using compressed air as power source replace existing use live ammunition, reduce experiment into
This, and test pollution-free, greatly reduce the danger of experiment；
2nd, the closed slide that the utility model is used can flexibly be chosen using spacing in the range of 70mm~1000mm, existing
Live ammunition test a kind of a kind of bullet of size correspondence and compare, substantially increase test efficiency；
3rd, the compressed air pressure that the utility model is used can freely be adjusted according to testpieces speed requirement, with existing reality
Play emission test to compare, the precision of experiment is improved, test and uncertain is also minimized.
Brief description of the drawings
Accompanying drawing 1 is system theory of constitution figure of the present utility model；
Accompanying drawing 2 is cylinder inner trajectory motion principle figure of the present utility model；
Accompanying drawing 3 is high speed tachometric survey schematic diagram of the present utility model.
Embodiment
The utility model is described in detail below according to accompanying drawing, it is front and rear with the definition of the testpieces direction of motion in text.
As shown in figure 1, the utility model gas launch draw-gear by intake valve 1, gas cylinder 2, gas bleeder valve 3, pressure gauge 4,
Safety valve 5, stop valve 6, seal section 7, group section 8, acceleration transducer 9, piston 10, cylinder 11, exhaust cabin 12, air discharge duct
13rd, air bleeding valve 14, bumper 15, directive wheel 16, steel wire rope 17, closed slide 18, hydraulic bjuffer 19, LD lasers 20, meter
When device 21, sliding machine 22, testpieces 23, playback mechanism 24 etc. composition.Source of the gas is entered on gas cylinder 2, gas cylinder 2 by intake valve 1
It is provided with after gas bleeder valve 3, pressure gauge 4 and safety valve 5, gas cylinder 1 and group section 8, group section is installed after installation stop valve 6, stop valve 6
8 are connected with cylinder 11, and to be supplied between cylinder front wall and piston, the front end of cylinder 11 is connected with seal section 7, the stage casing of cylinder 11
Wall is provided with air discharge duct 13, and the rear end of cylinder 11 is provided with bumper 15, the overall row of covering in the stage casing of cylinder 11 comprising air discharge duct 13
Gas cabin 12, the front end of piston 10 is provided with acceleration transducer 9, and the front end of piston 10 is connected with the one end of steel wire rope 17, and steel wire rope 17 is another
One end is connected with sliding machine 22, and testpieces 23 is positioned over the top of sliding machine 22, and the stage casing of steel wire rope 17 is carried out by pulley 16
Turn to, sliding machine 22 is configured on closed slide 18, spacing 70mm~1000mm guide rail can be used in closed slide, by with
The sliding machine 22 of set is located at below the rear end of closed slide 18 with the size of adequacy test part, playback mechanism 24, hydraulic bjuffer
19 are located at below the front end of closed slide 18, and LD lasers 20 are located at the side in the stage casing of closed slide 18, timer 21 and LD laser
Opposite side of the correspondence of device 20 installed in closed slide 18.Gas cylinder 2 is first inflated from air compressor machine to it, is reached and test speed demand pair
Stop inflation after the predetermined pressure answered, open stop valve 6, compressed air instantaneous expansion simultaneously promotes the haulage cable 17 of piston 10 to transport
It is dynamic, with sliding machine 22 and testpieces 23 that the other end of steel wire rope 17 is connected also together with moved along closed slide 18, when piston 10
Compressed air enters exhaust cabin 12 through air discharge duct 13 and discharged when moving at the stage casing air discharge duct 13 of cylinder 11, and piston 10 continues edge
Simultaneously the back segment gas of compression cylinder 11 is slowed down the motion of cylinder 11, while sliding machine 22 is collided and slowed down with hydraulic bjuffer 19
Until stopping, at the same time, testpieces 23 is separated with sliding machine 22, and separate acceleration and speed are respectively by before piston 10
The acceleration transducer 9 at end provides result with LD lasers 20 and the measurement of timer 21.Testpieces 23 separates and obtains demand speed
Impact test is carried out after degree, the braking development test of body ejection mechanism is substantially carried out.Start playback mechanism 24 after the completion of experiment,
Piston 10 and sliding machine 22 are returned to original position by playback mechanism 24.
The compressed air that the utility model is used is as power source, the utility model cylinder 11 according to experiment Demand Design
And piston 10 and the grade important component of steel wire rope 17, the size of the internal diameter of cylinder 11 is the key factor for influenceing piston 10 to move, at it
Under the same conditions, the bigger motion of piston 10 of the bore of cylinder 11 can reach for its condition identical particularly bleed pressure and travel condition
The speed arrived is bigger, and reason is that the internal diameter of cylinder 11 is bigger, and the stress surface of piston 10 is bigger, and the acceleration of motion of piston 10 is bigger,
Similarly, other conditions are particularly muzzle velocity requirement under the same conditions under the same conditions, and heavy caliber cylinder 11 is to source of the gas pressure
Power requirement is less than small-bore cylinder 11, therefore, selects the larger bore of cylinder 11 to be conducive to improving the movement velocity of piston 10.
Required according to experimental performance, the mass of testpieces 23 is between 10kg~50kg, and speed maximum reaches 80m/s, accelerates
And deceleration distance is 2.5m, it is contemplated that the requirement of experiment atmospheric pressure and test trip, pressure regulation convenience is taken into account, and combine state
Interior deep hole processing gun tube ability and economic factor, determine that the internal diameter of cylinder 11 elects 400mm as, determine that source of the gas is selected and are calmed the anger in 8MPa
Source.
The relation of speed and remaining each physical quantity when piston movement is given below at L.As shown in Fig. 2 the volume of gas cylinder 2
For V1, pressure is P1 in gas cylinder 2 before the setting in motion of piston 10, and temperature is T1, the left gas of piston 10 when at the motion of piston 10 x
Pressure is Px, and temperature is Tx, and volume is Vx.The mass of piston 10 is m, and the overall length of cylinder 11 is L, and cylinder inner cylinder net sectional area is A.
Gaseous mass is mg, can be tried to achieve according to the equation of gas state
Loss produced by gas expansion and piston movement process is equivalent to the mass incremental of piston 10, coefficient is ε,K values are 1.0~1.1.
By polytropic gas Principle of Process, gas expansion process equation is P1V1γ=PxVxγ
It can be obtained according to newton second theoremWherein
WillBringing above formula into can obtain
Above formula integration can be obtained：
As can be seen here, speed and the initial pressure of gas cylinder 2, the internal diameter of cylinder 2, gas composition, the original volume of gas cylinder 2, acceleration row
Journey etc. is relevant, and maximum determinant is the internal diameter of cylinder 2, the initial pressure of gas cylinder 2 and accelerating travel, is secondly the volume of gas cylinder 2,
In the case that catapult-launching gear is determined, the regulation initial pressure of gas cylinder 2 can realize the trystate of friction speed demand, with existing reality
The gunpowder filling for playing emission test is compared, and the precision of experiment is improved, test and uncertain is also minimized.
Because the separating rate of testpieces 23 is the key index that ejection mechanism brakes research, it is desirable to which speed is accurately measured, and is
This, the utility model uses laser type velocimetry, stops its light when testpieces 23 is moved at the first beam LD lasers 20, surveys
Speed variator sends pulse, and left side timer 21 recorded for the first moment, and testpieces 23, which is moved at the second beam LD lasers 20, to be stopped
Its light, speed measuring device sends the second subpulse, and the spacing that right side timer 21 is recorded between the second moment, two-beam road is fixed
Value d, the difference Δ t at two moment is the time, then can try to achieve separating rate
The present apparatus is supplied by source of the gas via intake valve to gas cylinder, is reached after predetermined pressure corresponding with test speed demand
Stop inflation, open stop valve, compressed air instantaneous expansion simultaneously promotes piston haulage cable to move, connected with the steel wire rope other end
The sliding machine and testpieces connect is also moved along closed slide together, compresses empty when at piston movement to cylinder stage casing air discharge duct
Gas enters exhaust cabin through air discharge duct and discharged, and piston continues to be slowed down along cylinder moving and compression cylinder back segment gas, simultaneously
Sliding machine is collided with hydraulic bjuffer and slowed down until stopping, at the same time, testpieces is separated with sliding machine, and separation accelerates
Degree and speed provide result by the acceleration transducer positioned at piston nose and LD lasers and timer measuring respectively.Testpieces
Separate and obtain and impact test is carried out after demand speed, be substantially carried out the braking development test of body ejection mechanism.Experiment is completed
Start playback mechanism afterwards, piston and sliding machine are returned to original position by playback mechanism by hydraulic-driven leading screw.
Claims (4)
1. a kind of gas launches draw-gear, it is characterised in that：Including air supply unit, piston-cylinder unit, traction unit, buffer and
Playback mechanism, and the piston-cylinder unit includes cylinder, piston and exhaust cabin, and the air supply unit is connected with the leading portion of the cylinder,
To be supplied between cylinder front wall and piston, the stage casing of the cylinder is provided with exhaust cabin, the gas in the exhaust cabin
It is provided with air discharge duct on casing wall, the rear end of the cylinder is provided with bumper, the traction unit includes directive wheel, steel wire rope,
Guide rail and coaster, the guide rail are arranged side by side with the cylinder, and one end of the steel wire rope is via seal section and the piston
Front end is connected, and the steel wire rope is after directive wheel is oriented to, and its other end is connected with the coaster being configured on the guide rail, described
Coaster is set to place to be provided with below testpieces, the end of the guide rail below buffer, the front end of the guide rail
State playback mechanism.
2. gas according to claim 1 launches draw-gear, it is characterised in that：Distinguish in the both sides in the guide rail stage casing
It is configured with LD lasers and timer.
3. gas according to claim 1 launches draw-gear, it is characterised in that：The front end of the piston is provided with acceleration
Spend sensor.
4. gas according to claim 1 launches draw-gear, it is characterised in that：The guide rail is closed slide, therebetween
Away from optional 70mm~1000mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621325478.2U CN206470035U (en) | 2016-12-05 | 2016-12-05 | Gas launches draw-gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621325478.2U CN206470035U (en) | 2016-12-05 | 2016-12-05 | Gas launches draw-gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206470035U true CN206470035U (en) | 2017-09-05 |
Family
ID=59710550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621325478.2U Withdrawn - After Issue CN206470035U (en) | 2016-12-05 | 2016-12-05 | Gas launches draw-gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206470035U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404333A (en) * | 2016-12-05 | 2017-02-15 | 中国航天空气动力技术研究院 | Gas ejection traction device |
| CN113915194A (en) * | 2021-09-14 | 2022-01-11 | 西南交通大学 | Cylinder volume adjusting and controlling system for cylinder pressure storage ejection test |
-
2016
- 2016-12-05 CN CN201621325478.2U patent/CN206470035U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404333A (en) * | 2016-12-05 | 2017-02-15 | 中国航天空气动力技术研究院 | Gas ejection traction device |
| CN106404333B (en) * | 2016-12-05 | 2019-03-01 | 中国航天空气动力技术研究院 | Gas launches traction device |
| CN113915194A (en) * | 2021-09-14 | 2022-01-11 | 西南交通大学 | Cylinder volume adjusting and controlling system for cylinder pressure storage ejection test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170905 Effective date of abandoning: 20190301 |