CN105240327B - Multistage retractable Pneumatic hydraulic catapult-launching gear - Google Patents
Multistage retractable Pneumatic hydraulic catapult-launching gear Download PDFInfo
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- CN105240327B CN105240327B CN201510801602.1A CN201510801602A CN105240327B CN 105240327 B CN105240327 B CN 105240327B CN 201510801602 A CN201510801602 A CN 201510801602A CN 105240327 B CN105240327 B CN 105240327B
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- sleeve
- ejection
- operated valve
- bracket
- pneumatic operated
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Abstract
The invention discloses the multistage retractable Pneumatic hydraulic catapult-launching gear of one kind, the output end of its high-pressure air source is connected with the air source input end of pneumatic operated valve, the control signal output of controller is connected with the electrical input terminal of pneumatic operated valve, two gas output ends mouthful of pneumatic operated valve are connected with the air inlet of two-way gas-liquid mixed Multi-stage cylinder and the blow vent of two-way gas-liquid mixed Multi-stage cylinder respectively, load is arranged on bracket, bracket is fixedly connected with the end face of the ejection extension bar of two-way gas-liquid mixed Multi-stage cylinder, pre-tightening apparatus one end is fixed, the other end is connected with bracket, there is provided and stretch out pretightning force in opposite direction with ejection extension bar；Present invention ejection efficiency high, and ejection mechanism can be automatically retracted after ejection, while can realize that ultrahigh speed is launched using Multi-stage cylinder and pre-tightening apparatus.
Description
Technical field
The invention belongs to Pneumatic-hydraulic catapult-launching gear field, particularly a kind of multistage retractable Pneumatic hydraulic ejection dress
Put.
Background technology
Pneumatic-hydraulic catapult-launching gear, is widely used in the ejection in military and civilian field, such as unmanned plane, guided missile.
Such as a kind of single-stage gas liquid mixing ejection mode of patent CN201010524849 propositions, when quickly launching, pass through air bag
Formula accumulator is filled with big flow fluid to single-stage gas liquid mixed cylinder, and one-level ejection external part is mainly by fluid thrust and insignificant
Air drag, so as to realize high speed ejection；The device can realize that ejection piston bar is automatically retracted in the case of valve control simultaneously；But
(>=15m/s) can not ensure sealing when being limited to the smaller effective ejection travel of single-stage cylinder and ultrahigh speed ejection, cause the ejection to fill
Put not launching with ultrahigh speed and load.
And patent CN200910166299 proposes the catapult-launching gear of the multi-stage gas-liquid mixed cylinder of drive of high-pressure gas, pass through
The form of Multi-stage cylinder increases effective ejection travel, while reducing the movement velocity of adjacent two-stage cylinder, it is to avoid ultrahigh speed is close
Seal problem；But this kind of catapult-launching gear needs to realize the automatic drawing back of ejection mechanism using auxiliary equipment after ejection, and due to
Ejection is initial not to be applied pretightning force to load and directly laterally urges load movement, causes oil liquid pressure not quickly rise to
Larger value, so as to launch being short of power for extension bar, ejection speed can not ensure to reach high level, and ejection efficiency is low；This
Outside, because the catapult-launching gear uses the fluid of closing fluid chamber as driving medium, after high speed ejection several times, interior oil
Liquid will deterioration failure, the catapult-launching gear do not provide change fluid hydraulic fluid port.
The content of the invention
Launching ejection mechanism after efficiency high, and ejection it is an object of the invention to provide one kind can automatically retract, while energy
The multistage retractable Pneumatic hydraulic catapult-launching gear of ultrahigh speed ejection is enough realized using Multi-stage cylinder and pre-tightening apparatus.
The technical solution for realizing the object of the invention is：
A kind of multistage retractable Pneumatic hydraulic catapult-launching gear, including high-pressure air source, controller, pneumatic operated valve, two-way gas-liquid
Hybrid multi-stage cylinder, pre-tightening apparatus, bracket and load；Wherein, it is provided with multistage set in the Master cylinder body of two-way gas-liquid mixed Multi-stage cylinder
Pot type piston cylinder, has cavity between the outermost layer sleeve and Master cylinder body inwall of multilevel sleeve type piston cylinder, and it is interior filled with fluid,
The bottom of multilevel sleeve type piston cylinder is slidingly sealed cooperation with Master cylinder body, and openend and the multilevel sleeve type piston cylinder of Master cylinder body are slided
Dynamic sealing coordinates, and is main air chamber, multilevel sleeve type piston cylinder between the bottom and Master cylinder body bottom of multilevel sleeve type piston cylinder
For multi-layer sleeve structure, the sleeve of its innermost layer and the ejection in it stretch out piston rod between be external part air chamber, ejection is stretched
Go out the bottom of piston rod and the sleeve of innermost layer is slidingly sealed cooperation, piston rod is stretched out in openend and the ejection of the sleeve of innermost layer
Cooperation is slidingly sealed, in addition to external part air chamber ensures sealing, the cavity between remaining sleeve passes through the perforate of side wall and bottom
So that the cavity insertion between ectonexine sleeve, is slided between interior one layer of sleeve and outer one layer of sleeve in bottom and with openend
Sealing coordinates, and air inlet is provided with the side of the main air chamber of Master cylinder body, and in the side of Master cylinder body multilevel sleeve type piston-cylinder
Oil-filled mouth is provided with, the side for stretching out outer one layer of sleeve in multilevel sleeve type piston cylinder innermost layer sleeve is provided with blow vent；High pressure gas
The output end in source is connected with the air source input end of pneumatic operated valve, the control signal output of controller and the electrical input terminal of pneumatic operated valve
Be connected, two gas output ends of pneumatic operated valve mouthful are connected with air inlet and blow vent respectively, load is arranged on bracket, bracket and
The end face of the ejection extension bar of two-way gas-liquid mixed Multi-stage cylinder is fixedly connected, and pre-tightening apparatus one end is fixed, and the other end connects with bracket
Connect that there is provided stretch out pretightning force in opposite direction with ejection extension bar.
The present invention compared with prior art, its remarkable advantage：
(1) present invention employs pre-tightening apparatus, pretightning force is applied to ejection load, when helping to launch inside ejection mechanism
Pressure increases rapidly, and initial acceleration is to improve ejection speed when being launched by improving.
(2) present invention is compared to existing gas-liquid mixed Multi-stage cylinder, and the air chamber that external part is set can reduce ejection extension bar
The resistance of motion, in identical stroke, improve ejection speed and ejection efficiency.
(3) present invention is connected using pneumatic operated valve with main air chamber and external part air chamber, can control the rapid bullet of Multi-stage cylinder
Go out, Multi-stage cylinder retraction can be caused in the case where remaining servicing unit need not be added again, it is quick to have carried out standard for ejection next time
It is standby.
The present invention is described in further detail below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 is the general structure schematic diagram of the multistage retractable Pneumatic hydraulic catapult-launching gear of the present invention.
Embodiment
Multistage retractable Pneumatic hydraulic catapult-launching gear of the invention a kind of, including high-pressure air source 1, controller 3, pneumatic operated valve 4,
Two-way gas-liquid mixed Multi-stage cylinder 9, pre-tightening apparatus 14, bracket 15 and load 16；Wherein, the master cylinder of two-way gas-liquid mixed Multi-stage cylinder 9
Multilevel sleeve type piston cylinder 10 is provided with body 7, between the outermost layer sleeve and the inwall of Master cylinder body 7 of multilevel sleeve type piston cylinder 10
There is cavity, it is interior filled with fluid, and bottom and the Master cylinder body 7 of multilevel sleeve type piston cylinder 10 are slidingly sealed cooperation, Master cylinder body 7
Openend is slidingly sealed cooperation, bottom and the bottom of Master cylinder body 7 of multilevel sleeve type piston cylinder 10 with multilevel sleeve type piston cylinder 10
Between be main air chamber 6, multilevel sleeve type piston cylinder 10 is multi-layer sleeve structure, and the sleeve of its innermost layer is stretched with the ejection in it
It is external part air chamber 8 to go out between piston rod 11, and the bottom of piston rod 11 is stretched out in ejection and the sleeve of innermost layer is slidingly sealed and matched somebody with somebody
Close, openend and the ejection of the sleeve of innermost layer stretch out piston rod 11 and be slidingly sealed cooperation, except external part air chamber 8 ensures to seal
Outside, the cavity between remaining sleeve causes the cavity insertion between ectonexine sleeve, interior one layer by the perforate of side wall and bottom
Cooperation is slidingly sealed in bottom and with openend between sleeve and outer one layer of sleeve, is opened in the side of the main air chamber 6 of Master cylinder body 7
There is air inlet 5, and oil-filled mouth 12 is provided with the side of the multilevel sleeve type piston-cylinder 10 of Master cylinder body 7, in multilevel sleeve type piston
The side that the innermost layer sleeve of cylinder 10 stretches out outer one layer of sleeve is provided with blow vent 13；The output end of high-pressure air source 1 and the gas of pneumatic operated valve 4
Source input is connected, and the control signal output of controller 3 is connected with the electrical input terminal of pneumatic operated valve 4, two gas of pneumatic operated valve 4
Body output port is connected with air inlet 5 and blow vent 13 respectively, and load 16 is arranged on bracket 15, and bracket 15 is mixed with two-way gas-liquid
The end face for closing the ejection extension bar 11 of Multi-stage cylinder 9 is fixedly connected, and the one end of pre-tightening apparatus 14 is fixed, and the other end is connected with bracket 15,
There is provided and stretch out pretightning force in opposite direction with ejection extension bar 11.
Blow vent 13 is connected by pneumatic operated valve 4 with air port 2.
Pre-tightening apparatus 14 is distributed on the surrounding of bracket.
Embodiment：
With reference to Fig. 1：
A kind of multistage retractable Pneumatic hydraulic catapult-launching gear, including high-pressure air source 1, controller 3, pneumatic operated valve 4, two-way gas
Liquid hybrid multi-stage cylinder 9, pre-tightening apparatus 14, bracket 15 and load 16；Wherein, set in the Master cylinder body 7 of two-way gas-liquid mixed Multi-stage cylinder 9
Multilevel sleeve type piston cylinder 10 is equipped with, has cavity between the outer layer sleeve of multilevel sleeve type piston cylinder 10 and the inwall of Master cylinder body 7, in it
Filled with fluid, the bottom of multilevel sleeve type piston cylinder 10 and Master cylinder body 7 are slidingly sealed cooperations, the openend of Master cylinder body 7 and many
The telescopic piston cylinder 10 of level is slidingly sealed cooperation, between the bottom and the bottom of Master cylinder body 7 of multilevel sleeve type piston cylinder 10 based on gas
Body cavity 6, multilevel sleeve type piston cylinder 10 is two layers of tube-in-tube structure, and its inner layer sleeve and the ejection in it are stretched out between piston rod 11
For external part air chamber 8, the bottom of piston rod 11 is stretched out in ejection and inner layer sleeve is slidingly sealed cooperation, the openend of inner layer sleeve
Piston rod 11, which is stretched out, with ejection is slidingly sealed cooperations, the bottom of inner layer sleeve and spacing less than the ejection stretching bottom of piston rod 11
The side-wall hole put, outer layer sleeve is less than the side-wall hole of inner layer sleeve bottom limit position so that inner layer sleeve and outer layer jacket
Cavity between cylinder is connected with the cavity between outer layer sleeve and Master cylinder body 7, in bottom between inner layer sleeve and outer layer sleeve
Cooperation is slidingly sealed with openend,
Air inlet 5 is provided with the side of the main air chamber 6 of Master cylinder body 7, and in the multilevel sleeve type piston-cylinder 10 of Master cylinder body 7
Side is provided with oil-filled mouth 12, and the side for stretching out outer layer sleeve in the inner layer sleeve of multilevel sleeve type piston cylinder 10 is provided with blow vent 13；
The output end of high-pressure air source 1 is connected with the air source input end of pneumatic operated valve 4, control signal output and the pneumatic operated valve 4 of controller 3
Electrical input terminal is connected, and two gas output ends mouthful of pneumatic operated valve 4 are connected with air inlet 5 and blow vent 13 respectively, blow vent 13
Connected by pneumatic operated valve 4 with air port 2, load 16 is arranged on bracket 15, bracket 15 and two-way gas-liquid mixed Multi-stage cylinder 9
The end face of ejection extension bar 11 is fixedly connected, and the one end of pre-tightening apparatus 14 is fixed, and the other end is connected with bracket 15, and pre-tightening apparatus 14 is equal
There is provided stretch out pretightning force in opposite direction with ejection extension bar 11 in the surrounding of bracket for cloth.
Multistage retractable Pneumatic hydraulic catapult-launching gear ejection process is as follows：
The signal output part control pneumatic operated valve 4 of controller 3 so that the output gas of high-pressure air source 1 enters two-way gas-liquid mixed
The main air chamber 6 of Multi-stage cylinder 9, the blow vent 13 of air chamber 8 is connected by pneumatic operated valve 4 with air port 2, now starts ejection；
Initial time is launched, gases at high pressure enter in main air chamber 6, and the main internal gas pressure of air chamber 6 gradually increases, many with promoting
The trend that the telescopic piston cylinder 10 of level is moved, while pre-tightening apparatus 14 pulls bracket 15 and loads 16 thereon so that two-way multistage
Gas-liquid mixed cylinder 9 stores power, it is ensured that the fluid pressure between the main gas pressure of air chamber 6 and multilevel sleeve type piston cylinder 10 and Master cylinder body 7
Power increases rapidly；After the main gas pressure of air chamber 6 reaches certain level, between multilevel sleeve type piston cylinder 10 and Master cylinder body 7
Oil liquid pressure acts on the pretightning force to bracket 15 of the power, increasingly greater than pre-tightening apparatus 14 of ejection extension bar 11, pre-tightening apparatus
14 release, so that the pressure of main air chamber 6 promotes multilevel sleeve type piston cylinder 10 to move；Multilevel sleeve type piston cylinder 10 and Master cylinder body
Fluid between 7, by the circumferential through-hole 17 of the cylinder at different levels of multilevel sleeve type piston cylinder 10, is flowed in multilevel sleeve type piston cylinder 10
Portion, promotes the inner stages cylinder of multilevel sleeve type piston cylinder 10 to stretch out, and promotes ejection extension bar 11 to move, while the gas of air chamber 8
Body is expelled in air rapidly by the air port 2 of pneumatic operated valve 4, while resistance of the gas of air chamber 8 to ejection extension bar 11
Power is much smaller than thrust of the inside fluid of multilevel sleeve type piston cylinder 10 to ejection extension bar 11, so as to launch the rapid bullet of extension bar 11
Go out, the load 16 on bracket 15 is launched away；It is described when ejection terminates, and two-way gas-liquid mixed Multi-stage cylinder 17 needs retraction
The output control signal of controller 3 cause pneumatic operated valve 4 to switch valve port, and form less valve opening so that high-pressure air source 1 is defeated
Go out end with the blow vent 13 of the air chamber 8 of two-way gas-liquid mixed Multi-stage cylinder 9 to be connected, air inlet 5 and the pneumatic operated valve 4 of main air chamber 6
Air port 2 be connected, now the gas of high-pressure air source 1 progresses into air chamber 8 by the less valve opening of pneumatic operated valve,
The cylinders at different levels of ejection extension bar 11 and multilevel sleeve type piston cylinder 10 are promoted slowly to bounce back, gas passes through pneumatic in main air chamber 6
The air port 2 of valve 4 is discharged, so as to realize the automatic drawing back of catapult-launching gear.
Claims (3)
1. a kind of multistage retractable Pneumatic hydraulic catapult-launching gear, it is characterised in that：Including high-pressure air source (1), controller (3),
Pneumatic operated valve (4), two-way gas-liquid mixed Multi-stage cylinder (9), pre-tightening apparatus (14), bracket (15) and load (16)；Wherein, two-way gas-liquid
Multilevel sleeve type piston cylinder (10) is provided with the Master cylinder body (7) of hybrid multi-stage cylinder (9), multilevel sleeve type piston cylinder (10) is most
Have cavity between outer layer sleeve and Master cylinder body (7) inwall, be filled with fluid in it, the bottom of multilevel sleeve type piston cylinder (10) with
Master cylinder body (7) is slidingly sealed cooperation, and openend and the multilevel sleeve type piston cylinder (10) of Master cylinder body (7) are slidingly sealed cooperation, many
It is main air chamber (6), multilevel sleeve type piston cylinder (10) between the bottom and Master cylinder body (7) bottom of the telescopic piston cylinder (10) of level
For multi-layer sleeve structure, the sleeve of its innermost layer and the ejection in it stretch out piston rod (11) between be external part air chamber (8),
The bottom of piston rod (11) is stretched out in ejection and the sleeve of innermost layer is slidingly sealed cooperation, the openend of the sleeve of innermost layer and ejection
Stretch out piston rod (11) and be slidingly sealed cooperation, in addition to external part air chamber (8) ensures sealing, the cavity between remaining sleeve passes through
The perforate of side wall and bottom causes the cavity insertion between ectonexine sleeve, the bottom of between interior one layer of sleeve and outer one layer of sleeve
Portion and openend are slidingly sealed cooperation, and air inlet (5) is provided with the side of Master cylinder body (7) main air chamber (6), and in Master cylinder body
(7) side of multilevel sleeve type piston cylinder (10) is provided with oil-filled mouth (12), in multilevel sleeve type piston cylinder (10) innermost layer sleeve
The one end for stretching out outer one layer of sleeve is provided with blow vent (13)；The output end of high-pressure air source (1) and the air source input end of pneumatic operated valve (4)
It is connected, the control signal output of controller (3) is connected with the electrical input terminal of pneumatic operated valve (4), two gases of pneumatic operated valve (4)
Output port is connected with air inlet (5) and blow vent (13) respectively, and load (16) is arranged on bracket (15), bracket (15) with it is double
The end face for stretching out piston rod (11) to the ejection of gas-liquid mixed Multi-stage cylinder (9) is fixedly connected, and pre-tightening apparatus (14) one end is fixed, separately
One end is connected that there is provided stretch out piston rod (11) with ejection to stretch out pretightning force in opposite direction with bracket (15).
2. multistage retractable Pneumatic hydraulic catapult-launching gear according to claim 1, it is characterised in that：The blow vent
(13) connected by pneumatic operated valve (4) with the air port (2) of pneumatic operated valve.
3. multistage retractable Pneumatic hydraulic catapult-launching gear according to claim 1, it is characterised in that：The pre-tightening apparatus
(14) it is distributed on the surrounding of bracket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510801602.1A CN105240327B (en) | 2015-11-19 | 2015-11-19 | Multistage retractable Pneumatic hydraulic catapult-launching gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510801602.1A CN105240327B (en) | 2015-11-19 | 2015-11-19 | Multistage retractable Pneumatic hydraulic catapult-launching gear |
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| Publication Number | Publication Date |
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| CN105240327A CN105240327A (en) | 2016-01-13 |
| CN105240327B true CN105240327B (en) | 2017-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510801602.1A Active CN105240327B (en) | 2015-11-19 | 2015-11-19 | Multistage retractable Pneumatic hydraulic catapult-launching gear |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110253597A (en) * | 2019-06-26 | 2019-09-20 | 深圳信息职业技术学院 | Fighter robot |
| CN110439880A (en) * | 2019-08-12 | 2019-11-12 | 北京坤飞航天科技有限公司 | The synchronous gas-liquid driving system of ultrahigh speed superelevation and gas-liquid driving method |
| CN114524107B (en) * | 2022-01-14 | 2023-09-19 | 成都飞机工业（集团）有限责任公司 | Pneumatic ejection system and method for unmanned aerial vehicle based on rodless cylinder vacuum differential pressure |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4101099A (en) * | 1977-09-15 | 1978-07-18 | The United States Of America As Represented By The Secretary Of The Navy | Repeatable release holdback bar |
| GB1526563A (en) * | 1977-06-17 | 1978-09-27 | Davy Loewy Ltd | Fluid operable piston-cylinder device |
| CN101195414A (en) * | 2006-12-04 | 2008-06-11 | 胡宣哲 | Numerical controlled constant power ejection method and device |
| CN101397054A (en) * | 2008-04-28 | 2009-04-01 | 李广 | Full floating turbine driven compressing ejector |
| CN101676174A (en) * | 2008-09-19 | 2010-03-24 | 胡宣哲 | Cold sling method and device |
| CN104401500A (en) * | 2014-11-11 | 2015-03-11 | 成都航天万欣科技有限公司 | Vertical unmanned aerial vehicle launcher |
| CN204729391U (en) * | 2015-05-18 | 2015-10-28 | 南京海杰机械制造有限公司 | Lifting double-action is installed vertically downward to stretch shell type oil hydraulic cylinder |
-
2015
- 2015-11-19 CN CN201510801602.1A patent/CN105240327B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1526563A (en) * | 1977-06-17 | 1978-09-27 | Davy Loewy Ltd | Fluid operable piston-cylinder device |
| US4101099A (en) * | 1977-09-15 | 1978-07-18 | The United States Of America As Represented By The Secretary Of The Navy | Repeatable release holdback bar |
| CN101195414A (en) * | 2006-12-04 | 2008-06-11 | 胡宣哲 | Numerical controlled constant power ejection method and device |
| CN101397054A (en) * | 2008-04-28 | 2009-04-01 | 李广 | Full floating turbine driven compressing ejector |
| CN101676174A (en) * | 2008-09-19 | 2010-03-24 | 胡宣哲 | Cold sling method and device |
| CN104401500A (en) * | 2014-11-11 | 2015-03-11 | 成都航天万欣科技有限公司 | Vertical unmanned aerial vehicle launcher |
| CN204729391U (en) * | 2015-05-18 | 2015-10-28 | 南京海杰机械制造有限公司 | Lifting double-action is installed vertically downward to stretch shell type oil hydraulic cylinder |
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| CN105240327A (en) | 2016-01-13 |
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