CN105240327A - Multi-stage retractile pneumatic hydraulic ejection device - Google Patents
Multi-stage retractile pneumatic hydraulic ejection device Download PDFInfo
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- CN105240327A CN105240327A CN201510801602.1A CN201510801602A CN105240327A CN 105240327 A CN105240327 A CN 105240327A CN 201510801602 A CN201510801602 A CN 201510801602A CN 105240327 A CN105240327 A CN 105240327A
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Abstract
The invention discloses a multi-stage retractile pneumatic hydraulic ejection device. The output end of a high-pressure air source is connected with an air source input end of a pneumatic valve; a control signal output end of a control is connected with an electric input end of the pneumatic valve; two gas output ports of the pneumatic valve are separately connected with an air inlet of a bidirectional gas-liquid mixing multi-stage cylinder and an air port of the bidirectional gas-liquid mixing multi-stage cylinder; a load is arranged on a bracket; the bracket is fixedly connected with the end surface of an ejection extending rod of the bidirectional gas-liquid mixing multi-stage cylinder; and one end of a pre-tightening device is fixed, and the other end is connected with the bracket, so that a pre-tightening force in the direction opposite to the extending direction of the ejection extending rod is provided. According to the multi-stage retractile pneumatic hydraulic ejection device, the ejection efficiency is high; an ejection mechanism can be retracted automatically after ejection; and meanwhile, superspeed ejection can be realized by utilizing the multi-stage cylinder and the pre-tightening device.
Description
Technical field
The invention belongs to Pneumatic-hydraulic catapult-launching gear field, particularly a kind of multistage can retraction type pneumatic hydraulic catapult-launching gear.
Background technique
Pneumatic-hydraulic catapult-launching gear, is widely used in military and civilian field, as launching of unmanned plane, guided missile etc.
As patent CN201010524849 proposes a kind of single-stage gas liquid mixing ejection mode, when launching fast, be filled with large discharge fluid by bladder accumulator to single-stage gas liquid mixed cylinder, one-level launches external part mainly by fluid thrust and insignificant resistance of air, thus realizes high speed ejection; This device can realize ejection piston bar automatic drawing back in valve control situation simultaneously; But be limited to the effective ejection travel of single-stage cylinder less and ultra high speed is launched time (>=15m/s) cannot ensure sealing, cause this catapult-launching gear cannot launch load with ultra high speed.
And patent CN200910166299 proposes the catapult-launching gear of the multi-stage gas-liquid mixed cylinder of drive of high-pressure gas, increase effective ejection travel by the form of Multi-stage cylinder, reduce the movement velocity of adjacent two-stage cylinder simultaneously, avoid a ultra high speed sealing difficult problem; But this kind of catapult-launching gear needs to utilize supplementary equipment to realize the automatic drawing back of ejection mechanism after launching, and initially directly laterally load movement is promoted to load applying pretightening force owing to launching, cause oil liquid pressure cannot be elevated to rapidly larger value, thus launch being short of power of extension bar, ejection speed cannot ensure to reach high level, and it is low to launch efficiency; In addition, due to this catapult-launching gear adopt be the fluid in closed fluid chamber as driving medium, after high speed ejection several times, inner fluid just can deterioration failure, and this catapult-launching gear does not provide the hydraulic fluid port changing fluid.
Summary of the invention
The object of the present invention is to provide one to launch efficiency high, and launch rear ejection mechanism energy automatic drawing back, Multi-stage cylinder and pre-tightening apparatus can be utilized to realize simultaneously ultra high speed launches multistage can retraction type pneumatic hydraulic catapult-launching gear.
The technical solution realizing the object of the invention is:
A kind of multistage can retraction type pneumatic hydraulic catapult-launching gear, comprise high-pressure air source, controller, pneumatic valve, two-way gas-liquid mixed Multi-stage cylinder, pre-tightening apparatus, bracket and load, wherein, multilevel sleeve type piston cylinder is provided with in the Master cylinder body of two-way gas-liquid mixed Multi-stage cylinder, cavity is had between the outermost surface sleeve of multilevel sleeve type piston cylinder and Master cylinder body inwall, fluid is filled with in it, the bottom of multilevel sleeve type piston cylinder coordinates with Master cylinder body slipper seal, the opening end of Master cylinder body coordinates with the slipper seal of multilevel sleeve type piston cylinder, be main air chamber between bottom the bottom of multilevel sleeve type piston cylinder and Master cylinder body, multilevel sleeve type piston cylinder is multi-layer sleeve structure, it is external part air chamber that the sleeve of its innermost layer and launching in it are stretched out between piston rod, the sleeve slipper seal of launching bottom and the innermost layer stretching out piston rod coordinates, the opening end of the sleeve of innermost layer stretches out piston rod slipper seal and coordinates with launching, except external part air chamber ensures sealing, cavity between all the other sleeves all makes the cavity between internal and external layer sleeve through by the perforate of sidewall and bottom, all coordinate in bottom with opening end slipper seal between interior one deck sleeve with outer one deck sleeve, suction port is had in the side of the main air chamber of Master cylinder body, and have oil-filled mouth in the side of Master cylinder body multilevel sleeve type piston-cylinder, the side of stretching out outer one deck sleeve at multilevel sleeve type piston cylinder innermost layer sleeve has ventilating hole, the output terminal of high-pressure air source is connected with the air source input end of pneumatic valve, the control signal output terminal of controller is connected with the electrical input terminal of pneumatic valve, two gas output end mouths of pneumatic valve are connected with ventilating hole with suction port respectively, load is arranged on bracket, bracket is fixedly connected with the end face launching extension bar of two-way gas-liquid mixed Multi-stage cylinder, pre-tightening apparatus one end is fixed, and the other end is connected with bracket, provides and launches extension bar and stretch out the contrary pretightening force in direction.
The present invention compared with prior art, its remarkable advantage:
(1) present invention employs pre-tightening apparatus, apply pretightening force to launching load, when contributing to launching, ejection mechanism internal pressure increases rapidly, and when launching by improving, initial acceleration is to improve ejection speed.
(2) the present invention is compared to existing gas-liquid mixed Multi-stage cylinder, and the air chamber that external part is arranged can reduce the resistance to motion of launching extension bar, in identical stroke, improves ejection speed and launches efficiency.
(3) the present invention adopts pneumatic valve to be connected with external part air chamber with main air chamber, can control Multi-stage cylinder and eject rapidly, when not needing to make Multi-stage cylinder bounce back when adding all the other auxiliary devices, can get ready fast for next time launches again.
Below in conjunction with accompanying drawing, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is that the present invention is multistage can the general structure schematic diagram of retraction type pneumatic hydraulic catapult-launching gear.
Embodiment
The present invention a kind of multistage can retraction type pneumatic hydraulic catapult-launching gear, comprise high-pressure air source 1, controller 3, pneumatic valve 4, two-way gas-liquid mixed Multi-stage cylinder 9, pre-tightening apparatus 14, bracket 15 and load 16, wherein, multilevel sleeve type piston cylinder 10 is provided with in the Master cylinder body 7 of two-way gas-liquid mixed Multi-stage cylinder 9, cavity is had between the outermost surface sleeve of multilevel sleeve type piston cylinder 10 and Master cylinder body 7 inwall, fluid is filled with in it, the bottom of multilevel sleeve type piston cylinder 10 coordinates with Master cylinder body 7 slipper seal, the opening end of Master cylinder body 7 coordinates with multilevel sleeve type piston cylinder 10 slipper seal, be main air chamber 6 between bottom the bottom of multilevel sleeve type piston cylinder 10 and Master cylinder body 7, multilevel sleeve type piston cylinder 10 is multi-layer sleeve structure, it is external part air chamber 8 that the sleeve of its innermost layer and launching in it are stretched out between piston rod 11, the sleeve slipper seal of launching bottom and the innermost layer stretching out piston rod 11 coordinates, the opening end of the sleeve of innermost layer stretches out piston rod 11 slipper seal and coordinates with launching, except external part air chamber 8 ensures sealing, cavity between all the other sleeves all makes the cavity between internal and external layer sleeve through by the perforate of sidewall and bottom, all coordinate in bottom with opening end slipper seal between interior one deck sleeve with outer one deck sleeve, suction port 5 is had in the side of the main air chamber 6 of Master cylinder body 7, and have oil-filled mouth 12 in the side of Master cylinder body 7 multilevel sleeve type piston-cylinder 10, the side of stretching out outer one deck sleeve at multilevel sleeve type piston cylinder 10 innermost layer sleeve has ventilating hole 13, the output terminal of high-pressure air source 1 is connected with the air source input end of pneumatic valve 4, the control signal output terminal of controller 3 is connected with the electrical input terminal of pneumatic valve 4, two gas output end mouths of pneumatic valve 4 are connected with ventilating hole 13 with suction port 5 respectively, load 16 is arranged on bracket 15, bracket 15 is fixedly connected with the end face launching extension bar 11 of two-way gas-liquid mixed Multi-stage cylinder 9, pre-tightening apparatus 14 one end is fixed, the other end is connected with bracket 15, provides and launches extension bar 11 and stretch out the contrary pretightening force in direction.
Ventilating hole 13 is communicated with air port 2 by pneumatic valve 4.
Pre-tightening apparatus 14 is distributed on the surrounding of bracket.
Embodiment:
Composition graphs 1:
A kind of multistage can retraction type pneumatic hydraulic catapult-launching gear, comprise high-pressure air source 1, controller 3, pneumatic valve 4, two-way gas-liquid mixed Multi-stage cylinder 9, pre-tightening apparatus 14, bracket 15 and load 16, wherein, multilevel sleeve type piston cylinder 10 is provided with in the Master cylinder body 7 of two-way gas-liquid mixed Multi-stage cylinder 9, cavity is had between multilevel sleeve type piston cylinder 10 outer layer sleeve and Master cylinder body 7 inwall, fluid is filled with in it, the bottom of multilevel sleeve type piston cylinder 10 coordinates with Master cylinder body 7 slipper seal, the opening end of Master cylinder body 7 coordinates with multilevel sleeve type piston cylinder 10 slipper seal, be main air chamber 6 between bottom the bottom of multilevel sleeve type piston cylinder 10 and Master cylinder body 7, multilevel sleeve type piston cylinder 10 is two-layer tube-in-tube structure, it is external part air chamber 8 that its inner layer sleeve and launching in it are stretched out between piston rod 11, launch the bottom of stretching out piston rod 11 to coordinate with inner layer sleeve slipper seal, the opening end of inner layer sleeve stretches out piston rod 11 slipper seal and coordinates with launching, the bottom of inner layer sleeve and lower than launching the side-wall hole stretching out piston rod 11 bottom limit position, outer layer sleeve is lower than the side-wall hole of inner layer sleeve bottom limit position, cavity between inner layer sleeve and outer layer sleeve is communicated with the cavity between outer layer sleeve and Master cylinder body 7, all coordinate in bottom with opening end slipper seal between inner layer sleeve with outer layer sleeve,
Have suction port 5 in the side of the main air chamber 6 of Master cylinder body 7, and have oil-filled mouth 12 in the side of Master cylinder body 7 multilevel sleeve type piston-cylinder 10, the side of stretching out outer layer sleeve at multilevel sleeve type piston cylinder 10 inner layer sleeve has ventilating hole 13, the output terminal of high-pressure air source 1 is connected with the air source input end of pneumatic valve 4, the control signal output terminal of controller 3 is connected with the electrical input terminal of pneumatic valve 4, two gas output end mouths of pneumatic valve 4 are connected with ventilating hole 13 with suction port 5 respectively, ventilating hole 13 is communicated with air port 2 by pneumatic valve 4, load 16 is arranged on bracket 15, bracket 15 is fixedly connected with the end face launching extension bar 11 of two-way gas-liquid mixed Multi-stage cylinder 9, pre-tightening apparatus 14 one end is fixed, the other end is connected with bracket 15, pre-tightening apparatus 14 is distributed on the surrounding of bracket, there is provided and launch extension bar 11 and stretch out the contrary pretightening force in direction.
Multistage can retraction type pneumatic hydraulic catapult-launching gear ejection process as follows:
The signal output part of controller 3 controls pneumatic valve 4, high-pressure air source 1 is exported main air chamber 6 that gas enters two-way gas-liquid mixed Multi-stage cylinder 9, and the ventilating hole 13 of air chamber 8 is communicated with air port 2 by pneumatic valve 4, now starts to launch, launch initial time, pressurized gas enter in main air chamber 6, main air chamber 6 internal gas pressure increases gradually, there is the trend promoting multilevel sleeve type piston cylinder 10 and move, pre-tightening apparatus 14 pulls bracket 15 and upper load 16 thereof simultaneously, make two-way multi-stage gas-liquid mixed cylinder 9 store power, ensure that main air chamber 6 gas pressure and the oil liquid pressure between multilevel sleeve type piston cylinder 10 and Master cylinder body 7 increase rapidly, after main air chamber 6 gas pressure reaches certain level, oil liquid pressure between multilevel sleeve type piston cylinder 10 and Master cylinder body 7 acts on the power of launching extension bar 11, be greater than the pretightening force to bracket 15 of pre-tightening apparatus 14 gradually, pre-tightening apparatus 14 gets loose, thus main air chamber 6 pressure promotion multilevel sleeve type piston cylinder 10 moves, fluid between multilevel sleeve type piston cylinder 10 and Master cylinder body 7, by the circumferential through-hole 17 of multilevel sleeve type piston cylinder 10 cylinder at different levels, flow to multilevel sleeve type piston cylinder 10 inner, promote multilevel sleeve type piston cylinder 10 inner stages cylinder to stretch out, and promote to launch extension bar 11 and move, air chamber 8 gas is expelled in air through the air port 2 of pneumatic valve 4 rapidly simultaneously, simultaneously the gas of air chamber 8 to the resistance launching extension bar 11 much smaller than the inner fluid of multilevel sleeve type piston cylinder 10 to the thrust of launching extension bar 11, thus launch extension bar 11 and eject rapidly, load 16 on bracket 15 is launched away, when launching end, when two-way gas-liquid mixed Multi-stage cylinder 17 needs to bounce back, described controller 3 exports control signal and makes pneumatic valve 4 switch valve port, and form less valve opening, high-pressure air source 1 output terminal is connected with the ventilating hole 13 of the air chamber 8 of two-way gas-liquid mixed Multi-stage cylinder 9, the suction port 5 of main air chamber 6 is connected with the air port 2 of pneumatic valve 4, now the gas of high-pressure air source 1 is by the less valve opening of pneumatic valve, progress into air chamber 8, the cylinders at different levels promoting to launch extension bar 11 and multilevel sleeve type piston cylinder 10 slowly bounce back, in main air chamber 6, gas is discharged by the air port 2 of pneumatic valve 4, thus realize the automatic drawing back of catapult-launching gear.
Claims (3)
1. multistage can a retraction type pneumatic hydraulic catapult-launching gear, it is characterized in that: comprise high-pressure air source (1), controller (3), pneumatic valve (4), two-way gas-liquid mixed Multi-stage cylinder (9), pre-tightening apparatus (14), bracket (15) and load (16), wherein, multilevel sleeve type piston cylinder (10) is provided with in the Master cylinder body (7) of two-way gas-liquid mixed Multi-stage cylinder (9), cavity is had between the outermost surface sleeve of multilevel sleeve type piston cylinder (10) and Master cylinder body (7) inwall, fluid is filled with in it, the bottom of multilevel sleeve type piston cylinder (10) coordinates with Master cylinder body (7) slipper seal, the opening end of Master cylinder body (7) coordinates with multilevel sleeve type piston cylinder (10) slipper seal, be main air chamber (6) between the bottom of multilevel sleeve type piston cylinder (10) and Master cylinder body (7) bottom, multilevel sleeve type piston cylinder (10) is multi-layer sleeve structure, it is external part air chamber (8) that the sleeve of its innermost layer and launching in it are stretched out between piston rod (11), the sleeve slipper seal of launching the bottom and innermost layer of stretching out piston rod (11) coordinates, the opening end of the sleeve of innermost layer stretches out piston rod (11) slipper seal and coordinates with launching, except external part air chamber (8) ensures sealing, cavity between all the other sleeves all makes the cavity between internal and external layer sleeve through by the perforate of sidewall and bottom, all coordinate in bottom and opening end slipper seal between interior one deck sleeve with outer one deck sleeve, suction port (5) is had in the side of Master cylinder body (7) main air chamber (6), and have oil-filled mouth (12) in the side of Master cylinder body (7) multilevel sleeve type piston-cylinder (10), the one end of stretching out outer one deck sleeve at multilevel sleeve type piston cylinder (10) innermost layer sleeve has ventilating hole (13), the output terminal of high-pressure air source (1) is connected with the air source input end of pneumatic valve (4), the control signal output terminal of controller (3) is connected with the electrical input terminal of pneumatic valve (4), two gas output end mouths of pneumatic valve (4) are connected with ventilating hole (13) with suction port (5) respectively, load (16) is arranged on bracket (15), bracket (15) is fixedly connected with the end face launching extension bar (11) of two-way gas-liquid mixed Multi-stage cylinder (9), pre-tightening apparatus (14) one end is fixed, the other end is connected with bracket (15), there is provided and launch extension bar (11) and stretch out the contrary pretightening force in direction.
2. according to claim 1 multistage can retraction type pneumatic hydraulic catapult-launching gear, it is characterized in that: described ventilating hole (13) is communicated with air port (2) by pneumatic valve (4).
3. according to claim 1 multistage can retraction type pneumatic hydraulic catapult-launching gear, it is characterized in that: described pre-tightening apparatus (14) 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 |
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| CN201510801602.1A CN105240327B (en) | 2015-11-19 | 2015-11-19 | Multistage retractable Pneumatic hydraulic catapult-launching gear |
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| CN105240327A true CN105240327A (en) | 2016-01-13 |
| CN105240327B CN105240327B (en) | 2017-08-29 |
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| CN201510801602.1A Active CN105240327B (en) | 2015-11-19 | 2015-11-19 | Multistage retractable Pneumatic hydraulic catapult-launching gear |
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Cited By (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 |
| CN114524107A (en) * | 2022-01-14 | 2022-05-24 | 成都飞机工业（集团）有限责任公司 | Unmanned aerial vehicle pneumatic ejection system and method based on rodless cylinder vacuum differential pressure |
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| 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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2015
- 2015-11-19 CN CN201510801602.1A patent/CN105240327B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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| 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 |
Cited By (4)
| 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 |
| CN114524107A (en) * | 2022-01-14 | 2022-05-24 | 成都飞机工业（集团）有限责任公司 | Unmanned aerial vehicle pneumatic ejection system and method based on rodless cylinder vacuum differential pressure |
| 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 |
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| CN105240327B (en) | 2017-08-29 |
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