CN110606207B - Helicopter crash-resistant seat with multiple protection integration - Google Patents
Helicopter crash-resistant seat with multiple protection integration Download PDFInfo
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- CN110606207B CN110606207B CN201910961311.7A CN201910961311A CN110606207B CN 110606207 B CN110606207 B CN 110606207B CN 201910961311 A CN201910961311 A CN 201910961311A CN 110606207 B CN110606207 B CN 110606207B
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- 230000004224 protection Effects 0.000 title claims abstract description 29
- 230000010354 integration Effects 0.000 title claims abstract description 12
- 238000013016 damping Methods 0.000 claims abstract description 36
- 238000005303 weighing Methods 0.000 claims abstract description 24
- 230000007246 mechanism Effects 0.000 claims description 33
- 238000006243 chemical reaction Methods 0.000 claims description 24
- 238000007906 compression Methods 0.000 claims description 14
- 230000006835 compression Effects 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 230000036544 posture Effects 0.000 abstract description 10
- 239000007789 gas Substances 0.000 description 11
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 8
- 230000004044 response Effects 0.000 description 6
- 239000006096 absorbing agent Substances 0.000 description 5
- 230000005284 excitation Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 230000004083 survival effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010009 beating Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003721 gunpowder Substances 0.000 description 2
- 230000035899 viability Effects 0.000 description 2
- 244000208734 Pisonia aculeata Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
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- 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
- B64D11/00—Passenger or crew accommodation; Flight-deck installations not otherwise provided for
- B64D11/06—Arrangements of seats, or adaptations or details specially adapted for aircraft seats
- B64D11/0619—Arrangements of seats, or adaptations or details specially adapted for aircraft seats with energy absorbing means specially adapted for mitigating impact loads for passenger seats, e.g. at a crash
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- 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
- B64D11/00—Passenger or crew accommodation; Flight-deck installations not otherwise provided for
- B64D11/06—Arrangements of seats, or adaptations or details specially adapted for aircraft seats
- B64D11/062—Belts or other passenger restraint means for passenger seats
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- 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
- B64D11/00—Passenger or crew accommodation; Flight-deck installations not otherwise provided for
- B64D11/06—Arrangements of seats, or adaptations or details specially adapted for aircraft seats
- B64D11/0627—Seats combined with storage means
- B64D11/0629—Seats combined with storage means the storage means being specially adapted for emergency equipment
- B64D11/0633—Seats combined with storage means the storage means being specially adapted for emergency equipment for devices other than life vests and intended for external use, e.g. parachutes or life rafts
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- 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
- B64D11/00—Passenger or crew accommodation; Flight-deck installations not otherwise provided for
- B64D11/06—Arrangements of seats, or adaptations or details specially adapted for aircraft seats
- B64D11/0689—Arrangements of seats, or adaptations or details specially adapted for aircraft seats specially adapted for pilots
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/40—Weight reduction
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Professional, Industrial, Or Sporting Protective Garments (AREA)
- Emergency Lowering Means (AREA)
Abstract
The invention discloses a helicopter crash-resistant seat with multiple protection integration, which comprises a main framework, a weighing sensor, a magnetorheological damping system, an upper trunk forced tightening and quick releasing system, a seat basin, a multifunctional vest and a controller, wherein the seat basin is in sliding connection with the main framework along the vertical direction, the magnetorheological damping system is fixedly arranged on the seat basin, the magnetorheological damping system is connected with the main framework through the weighing sensor, the upper trunk forced tightening and quick releasing system is arranged on the seat basin, the multifunctional vest is connected with the seat basin through the upper trunk forced tightening and quick releasing system, and the controller is respectively connected with the weighing sensor and the magnetorheological damping system. The safety protection device has excellent crash resistance protection performance, can provide optimal protection for all percentile passengers, enables pilots to keep optimal postures, prevents secondary collision, has a quick release function, can realize one-key unlocking, and enables the pilots to meet the life-saving requirements of various complex environments after falling collision.
Description
Technical Field
The invention relates to the technical field of aviation equipment, in particular to a helicopter crash-resistant seat with multiple protection integration.
Background
At present, a fixed load energy absorption technology is adopted for the crash-resistant seat of the helicopter in China, but the fixed load energy absorption technology can only provide optimal protection for pilots with specific weight (in order to exert the maximum efficiency in the weight range of pilots, the weight of pilots with 50 th percentile is generally taken), and is not effective for the protection of pilots with too light weight or too heavy weight; for a heavy pilot, moving downward at a deceleration less than expected may result in an insufficient stroke of impact, resulting in a secondary impact; while a lightweight pilot may not fully utilize the effective stroke, it may be impacted by a higher deceleration than expected beyond human tolerance. Therefore, in order to ensure that the energy-absorbing device provides optimal overload protection for all pilots when the helicopter crashes, the limited space below the seat is more reasonably utilized, and the self-adaptive electrodeless variable load energy-absorbing technology is adopted.
Due to the requirements of modern battlefields, helicopters are evolving towards high speeds, high maneuvers and high stealth. At present, five-point safety belts with inertia locking functions are commonly adopted for helicopter crash-resistant seats to control accidental beating actions of pilots, and although the constraint mode can effectively protect the pilots under normal flight overload, the protection of the pilots is not very effective under the crash working condition of high overload due to the defects of large slackening amount of webbing and certain response delay of locking of a shoulder belt inertia reel. The upper trunk forced tensioning technology is adopted, so that the pilot can forcedly pull back the upper trunk no matter what posture the pilot is in, the back of the pilot is kept to be clung to the backrest, the pilot is ensured to be in an optimal posture, and the viability of the pilot is improved.
The future battlefield environment is complex and changeable, the execution task of the helicopter is often in complex environments such as a hostile area, a sparsely-smoked desert, jungle or a wide water area, and the helicopter crash-resistant seat is also required to provide more comprehensive protection when the helicopter is suitable for the battlefield requirements of all regions and all environments. From the viewpoint of improving the viability of pilots, it is not enough to only consider the preservation of the life safety of pilots under the crash condition, but also the needs of survival and help seeking of pilots after landing (water) should be considered.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the helicopter crash-resistant seat with multiple protection integration, which has excellent crash-resistant protection performance, can provide optimal protection for all percentile passengers, ensures that pilots keep optimal postures, prevents secondary collision, has a quick release function, can realize one-key unlocking, and can meet the lifesaving demands of various complex environments after the pilots crash.
The technical scheme adopted by the invention for solving the technical problems is as follows:
The utility model provides an integrated helicopter anti-crash seat of multiple protection, including main skeleton, weighing sensor, magneto-rheological damping system, go up the trunk and force taut and quick release system, seat chair basin, multi-functional undershirt and controller, seat chair basin is along vertical direction and main skeleton sliding connection, magneto-rheological damping system sets firmly on seat chair basin, magneto-rheological damping system passes through weighing sensor and is connected with main skeleton, go up the trunk and force taut and quick release system and set up on seat chair basin, multi-functional undershirt is forced taut and quick release system through last trunk and is connected with seat chair basin, the controller is connected with weighing sensor and magneto-rheological damping system respectively.
According to the technical scheme, the magnetorheological damping system comprises a high-strength braid, a damper and a connecting shaft, one end of the high-strength braid is wound on the connecting shaft of the damper, the other end of the high-strength braid is connected with a weighing sensor, and the weighing sensor is fixedly arranged on the main framework.
According to the technical scheme, the damper is a magneto-rheological damper.
According to the technical scheme, the upper trunk forced tightening and quick release system comprises a quick release handle, a lower connecting rod, a lower conversion block, a conversion rod, a multifunctional conversion block, a pull rod, a lower lock rod, a compression spring, a steel cable, an upper conversion block, an upper connecting rod, an upper conversion block, an upper lock rod, a shoulder belt tightening belt and a shoulder belt tightening mechanism, wherein the lower connecting rod is arranged below the upper connecting rod, the quick release handle is connected with one end of the lower connecting rod, the other end of the lower connecting rod is connected with the lower end of the steel cable, the upper end of the steel cable is connected with the upper conversion block, and the upper conversion block is connected with the upper connecting rod;
The upper adapter block is connected with an upper lock rod, one end of a shoulder strap tightening strap is connected with a shoulder strap tightening mechanism, the other end of the shoulder strap tightening strap is inserted into a lock hole of the upper lock rod, the lower adapter block is sleeved on the lower connecting rod, the lower adapter block is connected with the multifunctional adapter block through a conversion rod, the multifunctional adapter block is connected with the lower lock rod through a pull rod, the shoulder strap tightening strap is connected with the upper end of the multifunctional vest, the lower lock rod is connected with the lower end of the multifunctional vest, a compression spring is sleeved on the lower lock rod, and the lower lock rod can automatically reset through the compression spring.
According to the technical scheme, the number of the pull rods and the number of the lower lock rods are two, one ends of the two pull rods are respectively connected with two sides of the multifunctional adapter block, the two lower lock rods are respectively connected with the other ends of the two pull rods, and two sides of the lower end of the multifunctional vest are respectively connected with the two lower lock rods.
According to the technical scheme, the number of the upper adapter blocks and the upper lock rods is two, the two upper adapter blocks are respectively sleeved at the two ends of the upper connecting rod, the two upper lock rods are respectively connected with the two upper adapter blocks, and the two sides of the upper end of the multifunctional vest are respectively connected with the two upper lock rods.
According to the technical scheme, the multifunctional adapter block is arranged on the back of the seat through the rotating shaft, the shoulder belt tensioning mechanism is fixedly arranged on the seat, and the upper connecting rod and the lower connecting rod are respectively sleeved at the upper end and the lower end of the seat.
According to the technical scheme, the shoulder strap tensioning mechanism is provided with the inertia reel, and is integrated with the quick disengaging mechanism, so that the volume is saved, the weight is reduced, and the shoulder strap tensioning strap is in a tensioned state, and the gas is excited into the hole.
According to the technical scheme, the multifunctional vest comprises a vest main body, wherein two shoulder strap tightening belts are connected to the upper end of the vest main body, an upper strap lock catch and a tightening belt are connected between the two shoulder strap tightening belts, two leg straps are connected to the lower end of the vest main body, leg strap guide rings are arranged on two sides of the vest main body, the two leg straps respectively penetrate through the leg strap guide rings on the corresponding sides, and leg strap lock catches and tightening belts are connected to each other.
According to the technical scheme, the seat basin is provided with the cushion, the backrest of the seat basin is provided with the back cushion, the back cushion of the seat is embedded with the lifeboat, and the main framework is used for being connected and fixed with the engine room.
The invention has the following beneficial effects:
1. The weight of the movable part of the seat and overload in the crash process are detected in real time through the weighing sensor (namely, the weight of the movable part of the seat is automatically detected in a normal flight state and the overload is detected in the crash process), the magnetorheological damping system carries out self-adaptive adjustment of damping force according to the detection signal of the weighing sensor to serve as an electrodeless variable load energy absorber, the damping force can be changed before the crash and in the crash process of the helicopter, the helicopter has excellent crash resistance protective performance, the optimal protection can be provided for all percentile passengers, the influence of other factors such as equipment weight, sitting posture and the like on the damping force is eliminated, the upper trunk forced tightening and quick release system can keep the pilot in an optimal posture in the crash process, the secondary crash is prevented, the helicopter has a quick release function, and the pilot can meet the life-saving requirements of various complex environments after the crash.
2. The life-saving equipment and the seat are integrated, so that the weight of the seat can be greatly reduced. The rescue boat is provided as a part of the backrest, is not placed under the seat basin, and releases the impact stroke.
Drawings
FIG. 1 is a front isometric view of a multiple protection integrated helicopter crash resistant seat in an embodiment of the invention;
FIG. 2 is a reverse-axis view of a multiple protection integrated helicopter crash resistant seat in an embodiment of the invention;
FIG. 3 is a schematic diagram of a magnetorheological damping system in accordance with an embodiment of the present invention;
FIG. 4 is a schematic diagram of an embodiment of the present invention of an upper torso forced tightening and quick release system;
FIG. 5 is a schematic structural view of a multifunctional vest in an embodiment of the invention;
FIG. 6 is a schematic illustration of a multi-functional vest coupled to an upper torso forced tightening and quick-release system in accordance with an embodiment of the invention;
in the figure, a 1-main framework and a 2-weighing sensor are shown;
3-magneto-rheological damping system, 301-high strength mesh belt, 302-damper, 303-connecting shaft, 304-input current wire;
4-upper trunk forced tightening and quick release system, 401-quick release handle, 402-lower connecting rod, 403-lower adapter block, 404-adapter rod, 405-multifunctional adapter block, 406-pull rod, 407-lower lock rod, 408-compression spring, 409-cable, 410-upper adapter block, 411-upper connecting rod, 412-upper adapter block, 413-upper lock rod, 414-shoulder strap tightening strap, 415-shoulder strap tightening mechanism, 416-gas excitation hole;
5-chair basin, 6-multifunctional vest, 601-vest body, 602-pulley, 603-leg strap, 604-leg strap guide ring, 605-upper strap latch and tightening strap, 606-leg strap latch and tightening strap, 607-shoulder strap connector, 608-shoulder strap tightening strap, 609-waistband and waistband tightening strap;
7-single life-saving boat, 8-back cushion and 9-cushion.
Detailed Description
The invention will now be described in detail with reference to the drawings and examples.
Referring to fig. 1 to 6, the helicopter crash-resistant seat with multiple protection integration in one embodiment provided by the invention comprises a main framework 1, a weighing sensor 2, a magnetorheological damping system 3, an upper trunk forced tightening and quick release system 4, a seat basin 5, a multifunctional vest 6, a controller and the like, wherein the main framework 1 is used for being connected and fixed with a cabin, the seat basin 5 is in sliding connection with the main framework 1 along the vertical direction, the magnetorheological damping system 3 is fixedly arranged on the seat basin 5, the magnetorheological damping system 3 is connected with a transverse strut of the main framework 1 through the weighing sensor 2, the upper trunk forced tightening and quick release system 4 is arranged on the seat basin 5, the multifunctional vest 6 is connected with the seat basin 5 through the upper trunk forced tightening and quick release system 4, and the controller is respectively connected with the weighing sensor 2 and the magnetorheological damping system 3.
Further, the seat has an excellent crash-resistant function, passengers can be adjusted to an optimal crash-resistant posture in the crash process, the seat also has a single-person rescue boat 7, offshore rescue can be realized, the weighing sensor 2 can automatically obtain real-time weights of the passengers and equipment, the real-time weights can be used as input signals of the stepless load-changing energy absorber, the damping force is self-adaptively adjusted, and the influence of other factors such as the equipment weight and sitting posture of the equipment on the damping force is eliminated.
Further, the magnetorheological damping system 3 comprises a high-strength webbing 301, a damper 302 and a connecting shaft 303, one end of the high-strength webbing 301 is wound on the connecting shaft 303 of the damper 302, the other end of the high-strength webbing is connected with the weighing sensor 2, and the weighing sensor 2 is fixedly arranged on the cross support of the main framework 1.
Further, the damper 302 is a magnetorheological damper 302; the damper 302 is connected to the controller via an input current line 304.
Further, the magnetorheological damper 3 is used as an electrodeless variable load energy absorber, the damping force of the damper 302 can be changed by changing the input current of the magnetorheological damper, and the magnetorheological damper is applied to the crash-resistant seat, so that the optimal protection can be provided for all percentile passengers. Meanwhile, the magnetorheological damper is quick in response, and can adaptively change damping force before and during the collision of the helicopter.
Further, the upper trunk forced tightening and quick release system 4 comprises a quick release handle 401, a lower connecting rod 402, a lower adapter block 403, a conversion rod 404, a multifunctional adapter block 405, a pull rod 406, a lower lock rod 407, a compression spring 408, a steel cable 409, an upper conversion block 410, an upper connecting rod 411, an upper adapter block 412, an upper lock rod 413, a shoulder strap tightening strap 414, a shoulder strap tightening mechanism 415 and a fuel gas excitation hole 416, wherein the lower connecting rod 402 is arranged below the upper connecting rod 411, the quick release handle 401 is connected with one end of the lower connecting rod 402, the other end of the lower connecting rod 402 is connected with the lower end of the steel cable 409, the upper end of the steel cable 409 is connected with the upper conversion block 410, and the upper conversion block 410 is connected with the upper connecting rod 411;
The upper adapter block 412 is connected with an upper lock rod 413, one end of a shoulder strap tightening strap 414 is connected with a shoulder strap tightening mechanism 415, the other end of the shoulder strap tightening strap 414 is inserted into a lock hole of the upper lock rod 413, the lower adapter block 403 is sleeved on the lower connecting rod 402, the lower adapter block 403 is connected with the multifunctional adapter block 405 through the adapter rod 404, the multifunctional adapter block 405 is connected with the lower lock rod 407 through the pull rod 406, the shoulder strap tightening strap 414 is connected with the upper end of the multifunctional vest 6, the lower lock rod 407 is connected with the lower end of the multifunctional vest 6, a compression spring is sleeved on the lower lock rod, the lower lock rod can be automatically reset through the compression spring 408, and when the quick release handle 401 is not operated, all mechanisms can be restored to the original state through the compression spring 408, and the compression spring is connected with a seat basin.
Further, the quick release handle 401 drives the lower connecting rod 402 to rotate, the lower connecting rod 402 rotates to drive the multifunctional adapter block 405 to rotate through the lower adapter block 403, and then the lower lock body is driven to unlock through the pull rod 406, so that the waistband and the waistband tightening band 609 are released; the lower connecting rod 402 rotates and drives the steel cable 409 to pull downwards, the steel cable 409 pulls downwards to drive the upper connecting rod 411 to rotate through the upper conversion block 410, and the upper connecting rod 411 rotates and drives the upper conversion block 412 to rotate, so that the upper locking rod 413 is driven to move downwards, and the shoulder strap tensioning strap 414 is released.
Further, the upper conversion block 410 is sleeved on the upper connection rod 411, a fixed pulley or a sleeve hole is fixed on one side of the upper conversion block 410, and the upper end of the steel cable 409 bypasses the fixed pulley or passes through the sleeve hole and the upper conversion block 410, and drives the upper connection rod 411 to rotate through the upper conversion block 410.
Further, the number of the pull rods 406 and the upper lock rods 413 is two, one ends of the two pull rods 406 are respectively connected with two sides of the multifunctional adapter block 405, the two lower lock rods 407 are respectively connected with the other ends of the two pull rods 406, and two sides of the lower end of the multifunctional vest 6 are respectively connected with the two lower lock rods 407.
Further, the number of the upper adapter blocks 412 and the upper lock bars 413 is two, the two upper adapter blocks 412 are respectively sleeved at two ends of the upper connecting rod 411, the two upper lock bars 413 are respectively connected with the two upper adapter blocks 412, and two sides of the upper end of the multifunctional vest 6 are respectively connected with the two upper lock bars 413.
Further, the multifunctional adapter block 405 is disposed on the back of the seat basin through a rotating shaft, the shoulder strap tensioning mechanism 415 is fixedly disposed on the seat, and the upper connecting rod 411 and the lower connecting rod 402 are respectively sleeved on the upper end and the lower end of the seat basin.
Further, the upper connecting rod 411 and the lower connecting rod 402 are both transversely sleeved at the upper end and the lower end of the seat basin.
Further, the shoulder strap tightening mechanism 415 has an inertia reel and a gas exciting hole 416, and is designed to be integrated with the quick release mechanism, so that the volume is saved, and the weight is reduced, so that the shoulder strap tightening strap 414 is in a natural tightening state, and the shoulder strap tightening strap 414 can be forcibly retracted by exciting the gas exciting hole 416.
Further, the multifunctional vest 6 comprises a vest main body 601, two shoulder strap tightening belts 608 are connected to the upper end of the vest main body 601, an upper strap lock catch and tightening belts 605 are connected between the two shoulder strap tightening belts 608, two leg straps are connected to the lower end of the vest main body 601, leg strap guide rings 604 are arranged on two sides of the vest main body 601, leg strap guide rings 604 on the corresponding sides are respectively passed through by the two leg straps, and leg strap lock catches and tightening belts 606 are connected to each other.
Further, the vest body 601 is connected with a shoulder strap connector 607, a pulley 602 is arranged on the shoulder strap connector 607, one end of the shoulder strap tension strap 414 is connected with the shoulder strap tension mechanism 415, and the other end of the shoulder strap tension strap 414 is inserted into the buttonhole of the upper lock rod 413 by bypassing the pulley 602; the multifunctional vest 6 replaces a five-point safety belt, is favorable for realizing quick release, and the passenger can wear the multifunctional vest 6 to escape after leaving the machine normally.
Further, the upper trunk forced tensioning mechanism can enable the pilot to keep the optimal posture in the falling collision process, and secondary collision is prevented. The forced tightening mechanism of the shoulder belt driven by gunpowder is adopted, so that the forced pulling time of the upper trunk is ensured to meet the requirement; the strap tensioning mechanism 415 triggers the helicopter emergency landing trigger via an overload initiator.
By operating the quick release handle 401, a quick release function is provided, and one-key unlocking can be achieved.
Further, a seat cushion 9 is arranged on the seat basin 5 of the seat, a back cushion 8 is arranged on the backrest of the seat, and a single-person lifeboat 7 is embedded in the back cushion 8 of the seat; the single-person rescue boat 7 is embedded into the seat back cushion 8, is used as a part of a backrest, is not placed below the seat basin 5, releases an impact stroke, and meets the requirements of survival and help seeking of passengers on water.
The working principle of the invention is as follows:
As shown in figure 1, the helicopter crash-resistant seat with multiple protection integration mainly comprises a main framework 1, a weighing sensor 2, a magnetorheological damping system 3, an upper trunk forced tightening and quick releasing system 4, a seat basin 5, a multifunctional vest 6, a single-person lifeboat 7, a back cushion 8 and a cushion 9. The main framework 1 is a seat main structure and is connected with a helicopter cabin. One end of the weighing sensor 2 is connected to the transverse support of the main framework 1, the other end of the weighing sensor is connected with the high-strength webbing 301 on the magnetorheological damper 3, the upper trunk forced tensioning mechanism 4 is fixed on the seat basin 5, and the single-person lifeboat 7 is folded and then positioned between the back cushion 8 and the seat basin 5. The route from the stress is as follows: the overload is sequentially transmitted to the weighing sensor 2, the magneto-rheological damper 3 and the chair basin 5 from the cross rod of the main framework 1. Wherein the magneto-rheological damper 3 is a rotary damper magneto-rheological coil. In the falling process, the upper trunk forced tensioning mechanism 4, the seat basin 5, the multifunctional vest 6, the single-person lifeboat 7, the back cushion 8 and the cushion 9 can slide up and down freely along the main framework 1, the magnetorheological damper 3 rotates, and the high-strength woven belt 301 rotates and stretches.
As shown in fig. 1, during normal flight, the upper torso forced tightening mechanism 4 provides the pilot with the normal riding requirements and the necessary constraints to prevent the pilot from beating and bumping the helicopter structure during helicopter jolts or deceleration overloads and maneuvers; during emergency landing, the magnetorheological damper 3 can attenuate the load transmitted to the body of the pilot, so that the damage of the load to the pilot is reduced to the maximum extent, and the pilot can be reliably restrained by the upper trunk forced tensioning mechanism 4 and the multifunctional vest 6. After the helicopter is stopped, the pilot pulls the quick release handle 401 to quickly release the connection between the multifunctional vest 6, the upper trunk forced tensioning mechanism 4 and the chair basin 5, so that the helicopter can be quickly evacuated. Under the water area and the field environment, the rescue time can be striven for by using the single-person rescue boat 7 and the like, and the survival rate is improved. In conclusion, the crash-resistant seat has multiple protection functions, can be suitable for complex environments, and can complete multiple task systems.
As shown in fig. 2, the magnetorheological damping system 3 mainly includes a high-strength webbing 301, a damper 302, a connecting shaft 303, and an input current line 304. The damper 302 is a rotary damper containing magnetorheological fluid, and the magnitude of the damping torque increases with the increase of the current flowing into the interior. The connecting shaft 303 connects the left and right dampers 302 together, and the high-strength webbing 301 is wound around the connecting shaft 303 to convert the rotational motion into the linear motion. During a helicopter fall crash, the leakage portion of the webbing 301 increases, i.e., the number of turns of the webbing 301 on the connecting shaft 303 decreases. The magnetorheological damper is an electrodeless variable load energy absorber because of the damping force corresponding to different current in the input current line 304. In addition, the magnetorheological damper has the capability of quick response, only 8ms is needed from the input of current to the obtaining of stable damping force, the whole process from the start of the falling collision working condition to the stabilization of the damping force can be completed within 10 ms-20 ms in consideration of other influencing factors such as a control strategy and line transmission, and the time of the helicopter seat to the falling collision response is 50 ms-100 ms, so that the damping force can be adjusted for more than 2 times in the falling collision process.
As shown in fig. 3, the upper trunk forced tightening and quick release system 4 mainly comprises a quick release handle 401, a lower connecting rod 402, a lower adapter 403, a switch rod 404, a multifunctional adapter 405, a pull rod 406, a lower lock lever 407, a compression spring 408, a wire rope 409, an upper switch block 410, an upper connecting rod 411, an upper adapter 412, an upper lock lever 413, a shoulder strap tightening strap 414, a shoulder strap tightening mechanism 415, and a gas excitation hole 416. In normal use, the shoulder strap tightening strap 414 is inserted into the keyhole of the upper lock bar 413, and the shoulder strap tightening mechanism 415 includes an inertia drum, so that the shoulder strap tightening strap 414 is in a natural tightening state. When the belt is released in an emergency, the quick release hand 401 is required to be pulled upwards to drive the lower connecting rod 402 to rotate clockwise, and the lower switching rod 404 moves downwards through the action of the lower switching block 403, so that the multifunctional switching block 405 is driven to rotate anticlockwise, the pull rod 406 is pulled towards the center, and finally the lower locking rod 407 moves towards the center, so that the unlocking of the belt is realized. At the same time, when the lower link 402 rotates clockwise, the wire rope 409 is pulled, so that the upper switch block 410 and the upper link 411 rotate counterclockwise, and the upper lock bar 413 is downwardly operated by the upper lock bar 413, thereby releasing the shoulder belt tightening strap 414. A compression spring 408 is located on the lower lock lever 407, which allows all mechanisms to return to their original state when the handle is not operated. When the quick release handle 401 is pulled upward, the lower lock lever 407 and the upper lock lever 413 move simultaneously while unlocking, and when the quick release handle 401 is released, the lower lock lever 407 and the upper lock lever 413 lock simultaneously. The gas excitation hole 416 can be connected with a gas pipeline, when a falling collision occurs, the throwing device excites the gas bomb to generate gas, and after the gas reaches the gas excitation hole 416, the shoulder strap tensioning mechanism 415 is forcedly excited.
As shown in fig. 4, the multifunctional vest 6 is mainly composed of a vest main body 601, pulleys 602, leg bands 603, leg band guide rings 604, upper harness latch and tightener bands 605, leg band latch and tightener 606, shoulder strap connecting members 607, shoulder strap tightener bands 608, and waist band tightener bands 609. The pilot wears the steps of first passing the leg strap 603 over the leg, then passing the leg strap 603 over the leg strap guide ring 604, locking the leg strap lock and lock in the tightener 606 and tightening the tightener strap; then the upper suspender lock catch and the tightening belt 605 are locked and tightened; finally, the shoulder strap is tightened by tightening the strap 608, so that the wearing is completed, and the releasing step is reversed. The connection to the seat system is shown in fig. 5, with the shoulder belt tightening strap 414 inserted around the pulley 602 into the upper locking bar 413 and the lap belt and lap belt 609 inserted into the lower locking bar 407. When the quick release handle 401 is pulled upwards, the multifunctional vest 6 can be completely released from the seat, so that the function of quick escape is realized.
In summary, the present invention aims to overcome the above-mentioned drawbacks of the prior art, and provide a helicopter crash-resistant seat with multiple protection integration. The self-adaptive energy absorbing device is arranged on the seat, so that the self-adaptive adjustment of the energy absorbing working load can be realized according to the change of the weight center of gravity of the seat system, and all percentile passengers can be optimally protected. Meanwhile, the seat and the individual protective equipment are integrated, and the shoulder strap forced tensioning mechanism is arranged, so that the survivability of the pilot under the collision working condition is improved. Through the upper trunk tensioning mechanism, the pilot keeps the back clinging to the backrest in the falling collision process, and maintains the optimal posture. Through the integration of the lifesaving equipment and the seat, a pilot can meet the lifesaving demands of various complex environments after falling collision; compared with the traditional energy-absorbing device based on the material plastic deformation technology, the self-adaptive energy-absorbing device has the advantage that the instantaneous dynamic response of the energy-absorbing working load in the falling collision process can be realized. The magneto-rheological damper has the advantages of continuously adjustable damping force, quick response (millisecond level), high failure safety, low energy consumption power and the like, and can be used as an electrodeless variable load energy absorber for a helicopter crash-resistant seat. The weight sensor 2 is arranged at the back of the seat, so that the weight of a human body and personal equipment can be monitored in real time, and the damping force is adjusted through a certain control algorithm, so that self-adaptive stepless load-changing energy absorption is realized, all percentile passengers can be optimally protected, and the damping force can be adaptively changed before and during the collision of the helicopter; the shoulder strap forced tightening mechanism is mainly based on the mature technology of an ejection seat, adopts a gunpowder-driven shoulder strap forced tightening mechanism, and ensures that the forced pull-back time of the upper trunk meets the requirement; the triggering mode of the shoulder strap tensioning mechanism 415 is that the overload starting device senses the emergency landing triggering of the helicopter; the seat adopts the integration technology of the restraint device and the multifunctional life vest and the integration technology of the seat back cushion and the single-person life boat 7, so that the integrated design of the seat and the individual protective equipment is realized. The weight of the seat can be greatly reduced, and the pilot can meet the life-saving requirements of various complex environments after falling collision.
The foregoing is merely illustrative of the present invention and is not intended to limit the scope of the invention, which is defined by the claims and their equivalents.
Claims (8)
1. The helicopter crash-resistant seat is characterized by comprising a main framework, a weighing sensor, a magnetorheological damping system, an upper trunk forced tightening and quick releasing system, a seat basin, a multifunctional vest and a controller, wherein the seat basin is in sliding connection with the main framework along the vertical direction;
The upper trunk forced tightening and quick release system comprises a quick release handle, a lower connecting rod, a lower conversion block, a conversion rod, a multifunctional conversion block, a pull rod, a lower lock rod, a compression spring, a steel cable, an upper conversion block, an upper connecting rod, an upper conversion block, an upper lock rod, a shoulder strap tightening belt and a shoulder strap tightening mechanism, wherein the lower connecting rod is arranged below the upper connecting rod;
The upper adapter block is connected with an upper lock rod, one end of a shoulder strap tightening strap is connected with a shoulder strap tightening mechanism, the other end of the shoulder strap tightening strap is inserted into a lock hole of the upper lock rod, the lower adapter block is sleeved on the lower connecting rod, the lower adapter block is connected with the multifunctional adapter block through a conversion rod, the multifunctional adapter block is connected with the lower lock rod through a pull rod, the shoulder strap tightening strap is connected with the upper end of the multifunctional vest, the lower lock rod is connected with the lower end of the multifunctional vest, a compression spring is sleeved on the lower lock rod, and the lower lock rod can automatically reset through the compression spring.
2. The multi-protection integrated helicopter crash-resistant seat according to claim 1 wherein the magnetorheological damping system comprises a high-strength webbing, a damper and a connecting shaft, wherein one end of the high-strength webbing is wound on the connecting shaft of the damper, the other end of the high-strength webbing is connected with a weighing sensor, and the weighing sensor is fixedly arranged on the main framework.
3. The multiple protection integrated helicopter crash resistant seat as recited in claim 2 wherein the damper is a magnetorheological damper.
4. The helicopter crash-resistant seat integrated with multiple protections according to claim 1, wherein the number of the pull rods and the number of the lower lock rods are two, one ends of the two pull rods are respectively connected with two sides of the multifunctional adapter block, the two lower lock rods are respectively connected with the other ends of the two pull rods, and two sides of the lower end of the multifunctional vest are respectively connected with the two lower lock rods.
5. The helicopter crash-resistant seat integrated with multiple protections according to claim 1, wherein the number of the upper adapter blocks and the upper lock bars is two, the two upper adapter blocks are respectively sleeved at two ends of the upper connecting bar, the two upper lock bars are respectively connected with the two upper adapter blocks, and two sides of the upper end of the multifunctional vest are respectively connected with the two upper lock bars.
6. The helicopter crash-resistant chair with multiple protection integration according to claim 1, wherein the multifunctional adapter block is arranged on a chair back of the chair basin through a rotating shaft, the shoulder strap tensioning mechanism is fixedly arranged on the chair basin, and the upper connecting rod and the lower connecting rod are respectively sleeved at the upper end and the lower end of the chair basin.
7. The multi-protection integrated helicopter crash-resistant seat according to claim 1, wherein the multifunctional vest comprises a vest main body, wherein two shoulder strap tightening belts are connected to the upper end of the vest main body, an upper shoulder strap lock catch and tightening belts are connected between the two shoulder strap tightening belts, two leg straps are connected to the lower end of the vest main body, leg strap guide rings are arranged on two sides of the vest main body, the two leg straps respectively penetrate through the leg strap guide rings on the corresponding sides, and leg strap lock catches and tightening belts are connected to each other.
8. The helicopter crash-resistant seat integrated with multiple protections according to claim 1, wherein a cushion is arranged on the seat basin, a back cushion is arranged on a backrest of the seat basin, a lifeboat is embedded in the back cushion of the seat, and the main skeleton is used for being connected and fixed with the cabin.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910961311.7A CN110606207B (en) | 2019-10-11 | 2019-10-11 | Helicopter crash-resistant seat with multiple protection integration |
| US17/767,930 US11987363B2 (en) | 2019-10-11 | 2020-09-30 | Anti-crash helicopter seat integrating multiple protections |
| PCT/CN2020/119576 WO2021068845A1 (en) | 2019-10-11 | 2020-09-30 | Crash-resistant helicopter seat integrated with multiple protections |
| ZA2022/05227A ZA202205227B (en) | 2019-10-11 | 2022-05-11 | Crash-resistant helicopter seat integrated with multiple protections |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910961311.7A CN110606207B (en) | 2019-10-11 | 2019-10-11 | Helicopter crash-resistant seat with multiple protection integration |
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| CN110606207A CN110606207A (en) | 2019-12-24 |
| CN110606207B true CN110606207B (en) | 2024-07-09 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US11987363B2 (en) | 2019-10-11 | 2024-05-21 | Aerospace Life-Support Industries Ltd | Anti-crash helicopter seat integrating multiple protections |
| CN112224420B (en) * | 2020-10-14 | 2023-12-05 | 航宇救生装备有限公司 | Crash-resistant seat capable of changing load and absorbing energy |
| CN112407292A (en) * | 2020-11-23 | 2021-02-26 | 北京安达维尔航空设备有限公司 | Integrated structure of aviation seat and lifesaving parachute |
| CN112722215B (en) * | 2021-01-27 | 2022-01-07 | 山东交通学院 | Personnel transfer device for marine rescue |
| US11708164B2 (en) | 2021-04-20 | 2023-07-25 | B/E Aerospace, Inc. | Combination energy impact attenuation, vibration mitigation and flotation device for aircraft seating applications |
| CN113602504B (en) * | 2021-09-23 | 2023-10-27 | 北京安达维尔航空设备有限公司 | Novel multi-functional lightweight anti-crash seat |
| CN114476089B (en) * | 2021-12-31 | 2023-06-23 | 中国航空工业集团公司西安飞机设计研究所 | Control system and method for avoiding pilot air-lift reset misoperation |
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