CN109383815B - Pneumatic unlocking cabin opening mechanism - Google Patents
Pneumatic unlocking cabin opening mechanism Download PDFInfo
- Publication number
- CN109383815B CN109383815B CN201811392675.XA CN201811392675A CN109383815B CN 109383815 B CN109383815 B CN 109383815B CN 201811392675 A CN201811392675 A CN 201811392675A CN 109383815 B CN109383815 B CN 109383815B
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- sleeve
- air
- ball
- piston
- cylinder body
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- 230000006835 compression Effects 0.000 claims abstract description 17
- 238000007906 compression Methods 0.000 claims abstract description 17
- 238000007789 sealing Methods 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000005538 encapsulation Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000009466 skin packaging Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D25/00—Emergency apparatus or devices, not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64C—AEROPLANES; HELICOPTERS
- B64C1/00—Fuselages; Constructional features common to fuselages, wings, stabilising surfaces or the like
- B64C1/14—Windows; Doors; Hatch covers or access panels; Surrounding frame structures; Canopies; Windscreens accessories therefor, e.g. pressure sensors, water deflectors, hinges, seals, handles, latches, windscreen wipers
Landscapes
- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Mechanical Engineering (AREA)
- Actuator (AREA)
Abstract
The pneumatic unlocking cabin opening mechanism comprises a rigid cabin cover (1), an air bag (2), a pneumatic lock (5) and an air source device (6), wherein the pneumatic lock (5) comprises a cylinder body (7), a piston (8), a supporting block (9), a limiting block (10), a compression block (11), balls (12), a spring (13), an air inlet (14) and a groove (17), the air source device (6) is opened, one path of high-pressure air enters a closed cavity (16) in the cylinder body (7) from an unlocking air supply pipe (3) through the air inlet (14), the piston (8) is pushed to overcome the pre-tightening force of the spring (13) to compress and release the constraint on the balls (12), the balls (12) roll into the groove (17), the constraint on the compression block (11) is released, the compression block (11) and the rigid cabin cover (1) are in a free state, and the locking constraint on the rigid cabin cover (1) by the pneumatic lock (5) is released; the other path of high-pressure gas enters the envelope state air bag (2) to be inflated, the air bag (2) to be formed by inflation can push off the rigid hatch cover (1) in the unlocking state, and the air bag (2) is formed by inflation to work.
Description
Technical Field
The invention relates to an airbag emergency lifesaving technology, in particular to a pneumatic unlocking cabin opening mechanism.
Background
The existing aviation emergency air bag products such as helicopter pontoons, life rafts and the like mostly adopt flexible coating fabrics as outer layer packages, the flexible coating fabrics are made into design shapes and packaged in a fixed-force rope, nylon buckles, four-way buckles and the like, the flexible skin packaging technology has the problems of irregular shapes, difficult sealing, poor ageing resistance, bearing of aerodynamic loads of high-speed flight of an aircraft and the like, and is difficult to keep consistent with the aircraft in appearance, and difficult to apply to the high-speed aircraft. The adoption of the rigid cabin body for air bag encapsulation can obviously solve the problem of flexible coating fabric encapsulation, but needs to solve the technical problem of quick release and detachment from the rigid cabin body.
Disclosure of Invention
The invention aims to: the invention provides a pneumatic unlocking cabin opening mechanism, which does not need to increase additional starting power, can carry out rigid cabin packaging storage and quick release on air bag products such as emergency pontoons, life rafts, emergency slides and the like, can ensure the pneumatic appearance of packaged air bags, and realizes reliable connection of the rigid cabin and an airplane and quick inflation and deployment of the air bags.
The technical scheme is as follows: the invention provides a pneumatic unlocking cabin opening mechanism which comprises a rigid cabin cover (1), an air bag (2), an unlocking air supply pipe (3), an air bag air supply pipe (4), a pneumatic lock (5) and an air source device (6);
the pneumatic lock (5) comprises a cylinder body (7), a piston (8), a supporting sleeve (9), a limiting sleeve (10), a pressing sleeve (11), balls (12), a spring (13), an air inlet (14), a boss (15), a closed cavity (16), a groove (17) and air holes (18), wherein the left end of the cylinder body (7) is provided with the air holes (18) communicated with the outside, and the right end of the cylinder body is fixedly connected with the supporting sleeve (9);
the piston (8) is in sliding fit with the cylinder body, the rod part of the piston (8) is in sliding fit with the supporting sleeve (9), a sealing ring is arranged between the piston and the cylinder body, and a sealing ring is arranged between the rod part of the piston and the supporting sleeve; the right end of the cylinder body (7), the piston (8) and the supporting sleeve (9) enclose a closed cavity (16), an air inlet (14) connected with the unlocking air supply pipe (3) is formed in the side edge of the right end of the cylinder body (7), and the air inlet is communicated with the closed cavity; the right end of the cylinder body (7) is fixedly connected with the supporting sleeve (9);
a boss (15) is formed on one surface of the piston (8) facing the left end of the cylinder body, and a spring (13) is clamped between the boss (15) and the left end of the cylinder body (7) and provides elastic pre-tightening force;
the supporting sleeve (9) and the limiting sleeve (10) are sleeved on the piston rod, the supporting sleeve (9) and the limiting sleeve (10) move integrally, the limiting sleeve is provided with a ball hole, the ball Kong Kerong passes through the ball (12), the diameter of the ball is larger than the wall thickness of the limiting sleeve, the outer side of the limiting sleeve is sleeved with a pressing sleeve (11) in a coaxial mode, the pressing sleeve is fixedly connected with the rigid hatch cover (1), the pressing sleeve is in sliding fit with the limiting sleeve, the ball is pressed in the ball hole by the pressing sleeve, the ball is clamped between the piston rod part and the pressing sleeve, the left end of the pressing sleeve is radially provided with a clamping part, the ball is limited, and the limiting sleeve (10) and the pressing sleeve (11) are locked together;
the air source device (6) is communicated with the air inlet (14) through the unlocking air supply pipe (3), and is communicated with the air bag (2) through the air bag air supply pipe (4).
Further, the supporting sleeve (9) is also provided with a ball hole, the ball hole of the supporting sleeve (9) and the ball hole of the limiting sleeve are positioned at the same axial position, the diameter of the ball is larger than the sum of the wall thickness of the supporting sleeve and the wall thickness of the limiting sleeve, and the ball is positioned in the ball holes of the supporting sleeve and the pressing sleeve
The air source device is opened, one path of high-pressure air enters the airtight cavity in the cylinder body from the unlocking air supply pipe through the air inlet, the piston is pushed to overcome the pre-tightening force of the spring to move to compress, the ball can be released from constraint on the ball, the ball rolls into the groove, the ball releases the constraint on the compression block, the compression block and the rigid hatch cover are in a free state, and the locking constraint of the pneumatic lock on the rigid hatch cover is released;
the other path of high-pressure gas enters the air bag in a packaged state to be inflated, the air bag to be formed by inflation is inflated to push off the rigid cabin cover in an unlocking state, and the air bag is inflated to be formed to work.
The rigid hatch cover is shaped to fit the shape of the nacelle.
The number and arrangement of the pneumatic locks are determined according to the shape of the rigid hatch and the forces to be borne. The plurality of pneumatic locks are preferably connected in series by unlocking the gas supply pipe.
The running stroke of the piston compression spring along the cylinder body to one end with the air holes is equal to or larger than the diameter of the ball.
The technical effects are as follows: the pneumatic unlocking cabin opening mechanism provided by the invention is quick and reliable in action, ensures the pneumatic appearance, can effectively solve the locking and quick release problems in the storage and inflation unfolding processes of the air bag product, and has higher popularization value.
The invention aims to provide a pneumatic unlocking cabin opening mechanism for carrying out rigid cabin encapsulation storage and quick release on airbag products such as emergency pontoons, life rafts, emergency slides and the like, and the pneumatic unlocking cabin opening mechanism is small in size, short in starting time and reliable in operation.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a cross-sectional view of the pneumatic lock of the present invention in a locked state A-A;
fig. 3 is a cross-sectional view of the pneumatic lock of the present invention in an unlocked state A-A.
Wherein, 1-rigidity hatch cover, 2-gasbag packet state and inflatable state, 3-unblock air supply pipe, 4-gasbag air supply pipe, 5-pneumatic lock, 6-air supply device. 7-cylinder body, 8-piston, 9-supporting block, 10-stopper, 11-compact block, 12-ball, 13-spring, 14-air inlet, 15-boss, 16-airtight cavity, 17-recess, 18-bleeder vent.
Detailed Description
The present invention will be described in further detail with reference to the following specific embodiments.
The pneumatic unlocking cabin opening mechanism comprises a rigid cabin cover 1, an air bag 2, an unlocking air supply pipe 3, an air bag air supply pipe 4, a pneumatic lock 5 and an air source device 6. The pneumatic lock 5 comprises a cylinder body 7, a piston 8, a supporting block 9, a limiting block 10, a compressing block 11, a ball 12, a spring 13, an air inlet 14, a boss 15, a closed cavity 16, a groove 17 and an air vent 18;
one end of the cylinder 7 is provided with an air vent 18 communicated with the outside, the other end is fixedly connected with the supporting block 9,
the piston 8 is connected with the supporting block 9 in a matched manner and is sealed through a sealing ring, a sealed cavity 16 is formed by the matched connection between the cylinder 7 and the supporting block 9 of the piston 8, and an air inlet 14 connected with the unlocking air supply pipe 3 is formed on the side edge of the cylinder 7, which is close to one end of the supporting block 9;
one end of the piston 8 is provided with a boss 15, a spring 13 is clamped between the boss 15 and the cylinder 7, the other end of the spring is respectively supported by a supporting block 9 and a limiting block 10, the supporting block 9 and the limiting block 10 are provided with grooves 17 capable of containing balls 12, one end of a compressing block 11 compresses the limiting block 10, the other end of the compressing block is fixed with the rigid hatch 1 through a screw, and the piston 8 jacks the balls 12 up to restrict the compressing block 11 to lock the rigid hatch 1;
the air source device 6 is connected with an unlocking air supply pipe 3 for supplying air to the pneumatic lock 5 and an air bag air supply pipe 4 for supplying air to the air bag 2;
the air source device 6 is opened, one path of high-pressure air enters the closed cavity 16 in the cylinder 7 from the unlocking air supply pipe 3 through the air inlet 14, the piston 8 is pushed to overcome the pretightening force of the spring 13 to move to compress, the restraint on the balls 12 can be released, the balls 12 roll into the grooves 17, the restraint on the compression block 11 is released by the balls 12, the compression block (11) and the rigid hatch cover (1) are in a free state, and the locking restraint on the rigid hatch cover 1 by the pneumatic lock 5 is released;
the other path of high-pressure gas enters the envelope state air bag 2 to be inflated, the air bag 2 to be formed by inflation is inflated to push off the rigid hatch cover 1 in the unlocking state, and the air bag 2 is inflated to be formed to work.
The rigid hatch 1 is adapted in shape to the shape of the nacelle.
The number and arrangement of the pneumatic locks 5 are determined according to the shape of the rigid hatch 1 and the forces to be borne. The plurality of pneumatic locks 5 are preferably connected in series by unlocking the air supply pipe 3.
The running stroke of the compression spring 13 of the piston 8 along the cylinder 7 to the end where the ventilation hole 18 is left is equal to or larger than the diameter of the ball 12.
Further description: the rigid hatch 1 is used for protecting the packaged air bag 2, the rigid hatch 1 is fixed and locked by balls on the pneumatic lock 5, and the shell of the pneumatic lock 5 is arranged on the air bag hatch. The air source device 6 is connected with the unlocking air supply pipe 3 and the air bag air supply pipe 4, and the two pipelines are respectively connected to the pneumatic lock 5 and the air bag 1. The boss on the left side of the piston 8 limits the compression spring 13 between the cylinder 7 and the piston 8, the right side of the piston 8 is respectively supported by the supporting block 9 and the limiting block 10, the compression block 12 and the rigid hatch 1 are fixed through screws, and the compression block 12 is well constrained due to the fact that the piston 8 jacks up the balls, so that the protection and the sealing effect of the hatch 1 are realized.
When the air bag 2 is required to be inflated, the air source device 6 is started and then rapidly deflates, a small amount of discharged high-pressure compressed air enters the pneumatic lock 5 through the unlocking air supply pipe 3, and most of the compressed air enters the air bag 2 in a folded and packaged state through the air bag air supply pipe 4. Compressed gas entering the pneumatic lock 5 enters a closed cavity formed by the piston 8, the supporting block 9 and the air cylinder 7, the compressed gas pushes the piston 8 to move leftwards to compress the spring 13, after a certain distance of movement, the piston can release the constraint on the balls 12, the balls 12 can fall into grooves of the limiting block 10 and the supporting block 9, the balls are contacted with the constraint on the compressing block 11, the compressing block 11 and the rigid hatch cover 1 are in a free state, the locking constraint of the pneumatic lock 5 on the rigid hatch cover 1 is released, and the pneumatic unlocking separation is realized. The high-pressure compressed gas entering the envelope state air bag 2 inflates the envelope state air bag, the air bag 2 to be formed by inflation will push off the rigid hatch cover 1 in the unlocking state, and the air bag 2 is formed by inflation to work.
The pneumatic lock is used for fixing and locking the rigid hatch cover, the rigid cylinder cover and the compression block on the pneumatic lock are assembled together through screws, and the compression block of the pneumatic lock is locked by the balls jacked by the piston. The pneumatic lock layout on the rigid cabin cover can ensure that the appearance of the rigid cabin cover is close to that of the aircraft, the pneumatic characteristic of the aircraft is ensured, and the air bags are packaged in the rigid cabin cover.
When the air source device is excited to deflate, a small amount of air enters the pneumatic lock through the unlocking air supply pipe, the air entering the pneumatic lock pushes the piston to move leftwards to compress the spring, the limitation on the balls can be relieved when the piston moves leftwards, and at the moment, the compression block and the hatch cover are still assembled together in a free state, so that the disengagement and unlocking are realized, and the rigid hatch cover is not locked any more.
Most of the gas discharged by the gas source device can enter the air bag in a packaged state through the air bag gas supply pipe, and the rigid hatch cover is ejected, released and thrown away along with the expansion force generated by the inflation and the expansion of the air bag.
The rigid hatch cover is locked by a pneumatic lock, and the packaged air bag is covered in the hatch. When the air source device is deflated, the air entering the pneumatic lock pushes the piston to move leftwards, the constraint of the ball on the compression block and the cylinder cover is released, the release and unlocking are realized, and the rigid cabin cover is inflated and jacked up by the air bag.
The air source device mainly supplies air to the air bag through the air bag supply pipe to enable the air bag to be inflated and formed, and meanwhile, a small amount of air can be supplied to the pneumatic lock through the unlocking air supply pipe to unlock.
Claims (4)
1. The utility model provides a pneumatic unblock cabin opening mechanism which characterized in that: including rigidity hatch cover (1), gasbag (2), unblock air supply pipe (3), gasbag air supply pipe (4), pneumatic lock (5), air supply device (6), its characterized in that:
the pneumatic lock (5) comprises a cylinder body (7), a piston (8), a supporting sleeve (9), a limiting sleeve (10), a pressing sleeve (11), balls (12), a spring (13), an air inlet (14), a boss (15), a closed cavity (16), a groove (17) and air holes (18), wherein the left end of the cylinder body (7) is provided with the air holes (18) communicated with the outside, and the right end of the cylinder body is fixedly connected with the supporting sleeve (9);
the piston (8) is in sliding fit with the cylinder body, the rod part of the piston (8) is in sliding fit with the supporting sleeve (9), a sealing ring is arranged between the piston and the cylinder body, and a sealing ring is arranged between the rod part of the piston and the supporting sleeve; the right end of the cylinder body (7), the piston (8) and the supporting sleeve (9) enclose a closed cavity (16), an air inlet (14) connected with the unlocking air supply pipe (3) is formed in the side edge of the right end of the cylinder body (7), and the air inlet is communicated with the closed cavity; the right end of the cylinder body (7) is fixedly connected with the supporting sleeve (9);
a boss (15) is formed on one surface of the piston (8) facing the left end of the cylinder body, and a spring (13) is clamped between the boss (15) and the left end of the cylinder body (7) and provides elastic pre-tightening force;
the supporting sleeve (9) and the limiting sleeve (10) are sleeved on the piston rod, the supporting sleeve (9) and the limiting sleeve (10) move integrally, the limiting sleeve is provided with a ball hole, the ball Kong Kerong passes through the ball (12), the diameter of the ball is larger than the wall thickness of the limiting sleeve, the outer side of the limiting sleeve is sleeved with a pressing sleeve (11) in a coaxial mode, the pressing sleeve is fixedly connected with the rigid hatch cover (1), the pressing sleeve is in sliding fit with the limiting sleeve, the ball is pressed in the ball hole by the pressing sleeve, the ball is clamped between the piston rod part and the pressing sleeve, the left end of the pressing sleeve is radially provided with a clamping part, the ball is limited, and the limiting sleeve (10) and the pressing sleeve (11) are locked together;
the air source device (6) is communicated with the air inlet (14) through the unlocking air supply pipe (3), and is communicated with the air bag (2) through the air bag air supply pipe (4);
the supporting sleeve (9) is also provided with a ball hole, the ball hole of the supporting sleeve (9) and the ball hole of the limiting sleeve are positioned at the same axial position, the diameter of the ball is larger than the sum of the wall thickness of the supporting sleeve and the wall thickness of the limiting sleeve, and the ball is positioned in the ball holes of the supporting sleeve and the pressing sleeve;
the compression stroke of the spring (13) is equal to or greater than the diameter of the ball (12).
2. A pneumatically unlocked hatch mechanism according to claim 1, characterized in that: the number and arrangement of the pneumatic locks (5) are determined according to the shape of the rigid hatch (1) and the forces to be borne.
3. A pneumatically unlocked hatch mechanism according to claim 1, characterized in that: a plurality of pneumatic locks (5) are connected in series through unlocking the air supply pipe (3).
4. A pneumatically unlocked hatch mechanism according to claim 1, characterized in that: the shape of the rigid hatch cover (1) is matched with the shape of the nacelle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811392675.XA CN109383815B (en) | 2018-11-21 | 2018-11-21 | Pneumatic unlocking cabin opening mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811392675.XA CN109383815B (en) | 2018-11-21 | 2018-11-21 | Pneumatic unlocking cabin opening mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109383815A CN109383815A (en) | 2019-02-26 |
| CN109383815B true CN109383815B (en) | 2023-10-20 |
Family
ID=65428901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811392675.XA Active CN109383815B (en) | 2018-11-21 | 2018-11-21 | Pneumatic unlocking cabin opening mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109383815B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115507710B (en) * | 2022-09-27 | 2023-09-05 | 北京星河动力装备科技有限公司 | Rocket landing telescopic arm and rocket recovery device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8501791D0 (en) * | 1984-02-18 | 1985-02-27 | Messerschmitt Boelkow Blohm | Aerodynamic stabilisation mechanism |
| US4508294A (en) * | 1983-05-02 | 1985-04-02 | The United States Of America As Represented By The Secretary Of The Navy | Air bag restraint system |
| JP2007284059A (en) * | 2007-07-25 | 2007-11-01 | Ihi Aerospace Co Ltd | Shock absorber of parachuted article |
| CN102530268A (en) * | 2011-08-02 | 2012-07-04 | 中国人民解放军国防科学技术大学 | Air bag type flywheel locking and unlocking device |
| CN103292639A (en) * | 2013-06-09 | 2013-09-11 | 江西洪都航空工业集团有限责任公司 | Driving device locking mechanism for guided missile |
| CN104334451A (en) * | 2012-06-08 | 2015-02-04 | 埃尔塞乐公司 | Locking/unlocking device for a one-piece cover of a thrust reverser of a turbojet engine nacelle |
| CN104477394A (en) * | 2014-11-28 | 2015-04-01 | 航宇救生装备有限公司 | Seat mechanical lock with restoring force |
| US9567774B1 (en) * | 2015-05-15 | 2017-02-14 | Northrop Grumman Systems Corporation | Temporally staged rapid panel access fastener for highly curved panels |
| CN107654699A (en) * | 2017-10-31 | 2018-02-02 | 航宇救生装备有限公司 | A kind of emergency evacuation slide release valve module |
| CN108100242A (en) * | 2017-12-03 | 2018-06-01 | 中国直升机设计研究所 | A kind of external helicopter short limb floating drum cabin |
-
2018
- 2018-11-21 CN CN201811392675.XA patent/CN109383815B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4508294A (en) * | 1983-05-02 | 1985-04-02 | The United States Of America As Represented By The Secretary Of The Navy | Air bag restraint system |
| GB8501791D0 (en) * | 1984-02-18 | 1985-02-27 | Messerschmitt Boelkow Blohm | Aerodynamic stabilisation mechanism |
| JP2007284059A (en) * | 2007-07-25 | 2007-11-01 | Ihi Aerospace Co Ltd | Shock absorber of parachuted article |
| CN102530268A (en) * | 2011-08-02 | 2012-07-04 | 中国人民解放军国防科学技术大学 | Air bag type flywheel locking and unlocking device |
| CN104334451A (en) * | 2012-06-08 | 2015-02-04 | 埃尔塞乐公司 | Locking/unlocking device for a one-piece cover of a thrust reverser of a turbojet engine nacelle |
| CN103292639A (en) * | 2013-06-09 | 2013-09-11 | 江西洪都航空工业集团有限责任公司 | Driving device locking mechanism for guided missile |
| CN104477394A (en) * | 2014-11-28 | 2015-04-01 | 航宇救生装备有限公司 | Seat mechanical lock with restoring force |
| US9567774B1 (en) * | 2015-05-15 | 2017-02-14 | Northrop Grumman Systems Corporation | Temporally staged rapid panel access fastener for highly curved panels |
| CN107654699A (en) * | 2017-10-31 | 2018-02-02 | 航宇救生装备有限公司 | A kind of emergency evacuation slide release valve module |
| CN108100242A (en) * | 2017-12-03 | 2018-06-01 | 中国直升机设计研究所 | A kind of external helicopter short limb floating drum cabin |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109383815A (en) | 2019-02-26 |
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