CN206900665U - Drag parachute latch hook device - Google Patents

Abstract

It the utility model is related to aircraft circles, it is specifically a kind of to ensure to take off, flight, land the safe drag parachute latch hook device in each stage, including suction nozzle and the unlocking suction nozzle of locking, suction nozzle of locking is connected with compression spring, compression spring is connected with stop bushing, piston is provided with by stop bushing, sliding block is fixed with piston, sliding block is connected with roller, and one end of sliding block is withstood on the roller of coupler body, coupler body includes two pusher dogs being oppositely arranged, each pusher dog has a rotating shaft, coupler body is also associated with shift fork rocking arm set, shift fork rocking arm set one end is connected with unlocking suction nozzle, the other end is connected with collision bead mechanism, collision bead mechanism is connected with projection, projection is connected with rocking arm installation axle, rocking arm installation axle is connected with shift fork rocking arm set.There is the utility model the latch hook of error-disable function to avoid the harm that aircraft accident parachute-opening causes anger in, the system failure rate is significantly declined, substantially increases the reliability of system.

Description

Drag parachute latch hook device

Technical field

Aircraft circles are the utility model is related to, specifically a kind of guarantee is taken off, flown, land the safe of each stage Drag parachute latch hook device.

Background technology

Drag parachute latch hook is the attachment means of aircraft and drag parachute, and the resistance of drag parachute is transmitted to body by latch hook.According to The outfield information accumulated for many years and situation about grasping, in-flight occurred drag parachute and misplaced out, and umbrella rope is pulled off and umbrella flies, Pilot has been mistakenly considered umbrella and has delayed the time during landing, causes aircraft to gun off the runway, or the carelessness due to ground service in hasty, Drag parachute housing non-locking door jail, the vibration in sliding run is taken off, hatch door is opened and is released umbrella, causes aircraft can not draw, make Into major accident（It is strong by 5, destroy 6, destroy 7 machines and once occurred such grade accident, including first-class more than once）.

If number of patent application is CN201520829797.6, applying date 2015.10.23, a kind of entitled " electromagnetism unblock The utility model patent of open type drag parachute housing ", its particular content are as follows：The utility model discloses a kind of electromagnetism unblock open type Drag parachute housing, including umbrella cabin, hatch door, hatch door retaining mechanism, drag parachute latch hook and electromagnetism unlocking device composition, hatch door by bolt with Umbrella cabin is connected, and electromagnetism unlocking device is connected on the bearing 3 in umbrella cabin by bolt 1, and electromagnetism unlocking device is connected by latch hook 2 and hatch door Connect.Although above-mentioned patent is improved drag parachute housing, it is not improved for the latch hook device of drag parachute, So there are still the possibility of error.

The content of the invention

In place of solving above-mentioned the shortcomings of the prior art, the utility model proposes a kind of resistance with mistake proofing design Umbrella latch hook device.

To realize above-mentioned technique effect, the technical solution of the utility model is as follows：

A kind of drag parachute latch hook device, it is characterised in that：Including suction nozzle and the unlocking suction nozzle of locking, the air inlet of locking Mouth is connected with compression spring, and the compression spring is connected with stop bushing, and piston, the piston are provided with by the stop bushing On be fixed with sliding block, the sliding block is connected with roller, and one end of the sliding block is withstood on the roller of coupler body, coupler body include two The pusher dog being oppositely arranged, each pusher dog have a rotating shaft, and the coupler body is also associated with shift fork rocking arm set, the shift fork rocking arm set One end is connected with unlocking suction nozzle, and the other end is connected with collision bead mechanism, and the collision bead mechanism is connected with projection, and the projection is with shaking Arm installation axle is connected, and the rocking arm installation axle is connected with shift fork rocking arm set.

Housing is provided with outside the stop bushing, step is provided with the housing.Housing is bolted to by two On drag parachute beam, between tail fairing and rudder.

Set fluted on the housing, O-ring seal is provided with groove.

The O-ring seal includes the first O-ring seal, the second O-ring seal and the 3rd O-ring seal.

Rocking arm and housing are fixedly connected by the first rocking arm installation axle by small axle；Second rocking arm installation axle will be dialled by bolt Fork rocking arm set is fixedly connected with housing；Collision bead mechanism is arranged on the long rocking arm of shift fork rocking arm set, and two coupler bodies are respectively by lining The upper and lower part that fixing bolt is screwed onto housing is applied mechanically, respectively has a torque spring on two coupler bodies, coupler body is remained opening Trend.

Unlocking suction nozzle is welded on housing.

The collision bead mechanism includes collision bead, adjustable plug screw and collision bead compression spring.

Two collision beads are each passed through two adjustable plug screws, and are fixed on by adjustable plug screw on the long rocking arm of shift fork rocking arm set, Collision bead compression spring is compressed between two collision beads.

Fixing bolt is provided with the rotating shaft.

Projection is the projection of sector, and sector is a part, for parachute release system of meeting an urgent need, is not introduced herein；Dial The collision bead pitched in rocking arm set enters in the hole of housing, plays a stopping function, shift fork rocking arm set is locked on housing using it.

The advantages of the application is：

1st, drag parachute latch hook device of the present utility model, when it is born, just show the distinctive superior of it Property.This latch hook with error-disable function avoids the harm that aircraft accident parachute-opening causes anger in, makes the system failure rate Significantly decline, substantially increase the reliability of system.Various verification experimental verifications are have passed through, and the use being subjected to for many years is examined Test, obtained vast using army, the very high praise of expert, professor.It is a successfully design.

2nd, it is accurate by three measures to ensure to hit the false lock of hook by the application.One is compression spring can only be stop bushing Shift onto and mutually propped up with step in housing, piston with slipper loses the power of advance immediately on this position；The second is sliding block During forward movement, shift fork rocking arm set will be driven to swing, while stop bushing props up step in housing, shift fork rocking arm Collision bead in group enters in the hole of lock housing, plays stopping function, avoids sliding block and false lock position is broken through due to inertia；Thirdly It is to be connected by the coordination cable wire of shift fork rocking arm set lower end with cabin door lock unlocking rocking arm, when umbrella lock is in false lock position, hatch door Lock interlocking rocking arm to work, the unlocking rocking arm stop for locking rear door, limitation unlocking rocking arm rotates, and so as to pass through coordinates Cable wire makes shift fork rocking arm set be caused shift fork rocking arm set to move to this false lock position by stop again.When closing hatch door, Interlocking rocking arm on cabin door lock starts, and ensures two latch hook energy normal works.

3rd, when the parachute-opening of drag parachute accident occur, flying, the shift fork on latch hook touches micro-switch, makes left instrument in cockpit Being ignited immediately without umbrella indicator lamp on plate, signal is sent to pilot, indicates no umbrella, instruction to be controlled when landing landing speed, Pay attention to, using brake, to cause to gun off the runway because being mistakenly considered umbrella.

Brief description of the drawings

Fig. 1 is drag parachute latch hook unlock state structure diagram.

Fig. 2 is drag parachute latch hook vacation lock status structural representation.

Fig. 3 is that drag parachute latch hook is locked（Really lock on earth）Status architecture schematic diagram.

Fig. 4 is shift fork rocking arm set, sliding block, the mechanism principle for coordinating cable wire.

Fig. 5 be latch hook collision bead mechanism working state figure, Fig. 2 A-A schematic diagrames.

In accompanying drawing：1. suction nozzle of locking；2. compression spring；3. the first O-ring seal；4. stop bushing；5. piston； 6. the second O-ring seal；7. the 3rd O-ring seal；8. housing；9. sliding block；10. roller；11. coupler body；12. fixing bolt；13. First rocking arm installation axle；14. the second rocking arm installation axle；15. projection；16. collision bead mechanism；17. shift fork rocking arm set；18. open It is locked into valve, 19. collision beads；20. adjustable plug screw；21. compression spring.

Embodiment

Embodiment 1

A kind of drag parachute latch hook device includes lock suction nozzle 1 and unlocking suction nozzle 18, and the suction nozzle 1 of locking is connected with Compression spring 2, the compression spring 2 are connected with stop bushing 4, are provided with piston 5 by the stop bushing 4, on the piston 5 Sliding block 9 is fixed with, the sliding block 9 is connected with roller 10, and one end of the sliding block 9 is withstood on the roller 10 of coupler body 11, coupler body 11 include two pusher dogs being oppositely arranged, and each pusher dog has a rotating shaft, and the coupler body 11 is also associated with shift fork rocking arm set, institute State shift fork rocking arm set one end with unlocking suction nozzle 18 to be connected, the other end is connected with collision bead mechanism 16, and the collision bead mechanism 16 connects There is projection 15, the projection 15 is connected with rocking arm installation axle, and the rocking arm installation axle is connected with shift fork rocking arm set.The utility model Drag parachute latch hook device, when it is born, just show its distinctive superiority.It is this with error-disable function Latch hook avoids the harm that aircraft accident parachute-opening causes anger in, the system failure rate is significantly declined, substantially increases The reliability of system.Have passed through various verification experimental verifications, and be subjected to for many years use test, obtained it is vast using army, Expert, the very high praise of professor.It is a successfully design.

Embodiment 2

Drag parachute latch hook device includes lock suction nozzle 1 and unlocking suction nozzle 18, and the suction nozzle 1 of locking is connected with compression Spring 2, the compression spring 2 are connected with stop bushing 4, and piston 5 is provided with by the stop bushing 4, is fixed on the piston 5 There is sliding block 9, the sliding block 9 is connected with roller 10, and one end of the sliding block 9 is withstood on the roller 10 of coupler body 11, and coupler body 11 wraps Include two pusher dogs being oppositely arranged, each pusher dog has a rotating shaft, and the coupler body 11 is also associated with shift fork rocking arm set, described group Fork rocking arm set one end is connected with unlocking suction nozzle 18, and the other end is connected with collision bead mechanism 16, and the collision bead mechanism 16 is connected with convex Block 15, the projection 15 are connected with rocking arm installation axle, and the rocking arm installation axle is connected with shift fork rocking arm set.

Housing 8 is provided with outside stop bushing 4, step is provided with the housing 8.Housing 8 is bolted to by two On drag parachute beam, between tail fairing and rudder.

Set fluted on housing 8, O-ring seal is provided with groove.The O-ring seal include the first O-ring seal 3, Second O-ring seal 6 and the 3rd O-ring seal 7.

Rocking arm and housing 8 are fixedly connected by the first rocking arm installation axle 13 by small axle；Second rocking arm installation axle 14 passes through spiral shell Shift fork rocking arm set 17 and housing 8 are fixedly connected by bolt；Collision bead mechanism 16 is arranged on the long rocking arm of shift fork rocking arm set 17, two hooks Body 11 is screwed onto the upper and lower part of housing 8 by bushing fixing bolt 12 respectively, respectively has a torsion bullet on two coupler bodies 11 Spring, coupler body 11 is set to remain opening trend.Unlocking suction nozzle 18 is welded on housing 8.

The collision bead mechanism 16 includes collision bead 19, adjustable plug screw 20 and collision bead compression spring 21.Two collision beads 19 are worn respectively Two adjustable plug screws 20 are crossed, and are fixed on by adjustable plug screw 20 on the long rocking arm of shift fork rocking arm set 17, collision bead compression spring 21 is pressed Contracting is between two collision beads 19.Fixing bolt 12 is provided with the rotating shaft.

Projection 15 is the projection 15 of sector, and sector is a part, for parachute release system of meeting an urgent need, is not situated between herein Continue；Collision bead 19 in shift fork rocking arm set 17 enters in the hole of housing 8, a stopping function is played, using it shift fork rocking arm set 17 are locked on housing 8.

Drag parachute latch hook device of the present utility model, when it is born, just show its distinctive superiority. This latch hook with error-disable function avoids the harm that aircraft accident parachute-opening causes anger in, makes the system failure rate significantly Degree declines, and substantially increases the reliability of system.Various verification experimental verifications are have passed through, and are subjected to use test for many years, are obtained Arrive vast using army, the very high praise of expert, professor.It is a successfully design.

It is accurate that the application by three measures ensures to hit the false lock of hook.One is compression spring 2 can only be stop bushing 4 Shift onto and mutually propped up with step in housing 8, the piston 5 with sliding block 9 loses the power of advance immediately on this position；The second is During sliding block 9 moves forward, shift fork rocking arm set 17 will be driven to swing, the same of step in housing 8 is propped up in stop bushing 4 When, the collision bead 19 in shift fork rocking arm set 17 enters in the hole of lock housing, plays stopping function, avoids sliding block 9 and rushed due to inertia Cross false lock position；The third is it is connected by the coordination cable wire of the lower end of shift fork rocking arm set 17 with cabin door lock unlocking rocking arm, at umbrella lock When false lock position, interlocking rocking arm works on cabin door lock, the unlocking rocking arm stop for locking rear door, limits unlocking rocking arm Rotate, so as to make shift fork rocking arm set 17 be caused shift fork rocking arm set 17 to move to this by stop again by coordinating cable wire False lock position.When closing hatch door, the interlocking rocking arm on cabin door lock starts, and ensures two latch hook energy normal works.

When the parachute-opening of drag parachute accident occur, flying, the shift fork on latch hook touches micro-switch, makes left instrument board in cockpit On ignited immediately without umbrella indicator lamp, send signal to pilot, indicate no umbrella, instruction will control landing speed, note when landing Meaning will not cause to gun off the runway because being mistakenly considered umbrella using brake.

Embodiment 3

On the basis of embodiment 1 or 2, the operation principle of the utility model drag parachute latch hook：Latch hook is in open mode When, see Fig. 2, compression spring 2 is in compressive state, and spring pushes stop bushing 4, the pushing piston 5 of stop bushing 4 and is fixed on it On sliding block 9, sliding block 9 withstood on the roller 10 of coupler body, and due to the effect of compression spring, piston rod always has what is further stretched out Trend, as long as the roller one on coupler body disengages sliding block, sliding block will move with piston rod immediately.When filling umbrella, annulus is with resistance When umbrella is pushed into the pusher dog of hook-bill collision coupler body, two coupler bodies 11 respectively around its axis of rotation, latch hook coupler body pusher dog closure, hook resistance Umbrella annulus, meanwhile, the roller on coupler body, which is opened, gets out of the way sliding block, and compressed spring immediately promotes forward sliding block.

Compression spring 2 promotes stop bushing 4, when stop bushing, which is moved to, to be propped up with the step in housing 8, stop bushing It can not again move forward, piston and sliding block 9 are also just stopped on this position.On this position, sliding block end face not yet reaches To the line at two roller centers（Distance 3mm）, which forms false locking state（See Fig. 3）, drag parachute annulus shown in M in Fig. 3.

After filling umbrella, the latch hook of umbrella automatically lock by upper vacation, as long as pilot does not have the company that umbrella device, drag parachute and aircraft are put in manipulation Connect and just remain at false lock status, from taking off until aircraft landing.Due to there is such a false locking device, in the whole of flight During individual, once there is unexpected parachute-opening, as long as the pulling force P of drag parachute reaches 20 kilograms, latch hook is with regard to energy auto-unlocking, resistance Umbrella jettisoning from aircraft（Resistance after extractor parachute is filled is both greater than this power, therefore main chute does not have also opening to fly from aircraft Fall）.Thus eliminating the need in-flight additional moment caused by the parachute-opening of drag parachute accident, makes aircraft that the possibility of major accident occur Property, so as to ensure that the safety of aircraft and pilot, avoid the generation of grade accident.When normally putting umbrella, umbrella is put in pilot guidance Switch, electromagnetic valve work, the cooling pipelines for putting umbrella are connected, cold air is by locking（Put umbrella）Suction nozzle 1 puts umbrella into pressurized strut Chamber, cold air promote piston 5 and the sliding block 9 being fixed thereon to move forward, first latch hook is really locked（See Fig. 4）, pin drag parachute Annulus, while sliding block drives shift fork rocking arm set 17 to swing, rocking arm lower end is connected by coordinating cable wire with cabin door lock, and the door that opens the cabin is put Umbrella.When throwing umbrella, cold air passes through unlocking（Throw umbrella）Suction nozzle 18 enters the throwing umbrella chamber of umbrella lock, and cold air forces piston 5 to move back, sliding Block 9 also just skids off between two rollers, and coupler body pusher dog is under torque spring effect, and latch hook is opened, jettisoning drag parachute.Shift fork rocking arm The mechanical motion principle that group, sliding block, cabin door lock coordinate cable wire is shown in（Fig. 5）.

Thus, the accuracy of false lock status is vital, to ensure that latch hook vacation upper lock position occurs without mistake, to set Triple measures are taken on meter：

Mutually propped up with step in housing one is compression spring 2 can only shift stop bushing onto, piston with slipper is at this The power of advance is lost on individual position immediately；

The second is during sliding block moves forward, shift fork rocking arm set 17 will be driven to swing, housing is propped up in stop bushing While interior step, the collision bead 19 in shift fork rocking arm set enters in the hole of lock housing, plays stopping function, avoids sliding block due to used Property and break through false lock position；

The third is being connected by the coordination cable wire of the lower end of shift fork rocking arm set 17 with cabin door lock unlocking rocking arm, it is in umbrella lock During false lock position, interlocking rocking arm works on cabin door lock, the unlocking rocking arm stop for locking rear door, and limitation unlocking rocking arm turns It is dynamic, so as to make shift fork rocking arm set be caused shift fork rocking arm set to move to this false lock-bit by stop again by coordinating cable wire Put.When closing hatch door, the interlocking rocking arm on cabin door lock starts, and ensures two latch hook energy normal works.

It is accurate that these three measures ensure to hit the false lock of hook.

In addition, when the parachute-opening of drag parachute accident occur, flying, the shift fork on latch hook touches micro-switch, makes left in cockpit Being ignited immediately without umbrella indicator lamp on instrument board, signal is sent to pilot, indicates no umbrella, and instruction will control landing speed when landing Degree, pay attention to, using brake, to cause to gun off the runway because being mistakenly considered umbrella.

Claims (9)

1. A kind of 1. drag parachute latch hook device, it is characterised in that：Including suction nozzle of locking（1）With unlocking suction nozzle（18）, it is described on It is locked into valve（1）It is connected with compression spring（2）, the compression spring（2）It is connected with stop bushing（4）, the stop bushing（4） Side is provided with piston（5）, the piston（5）On be fixed with sliding block（9）, the sliding block（9）With roller（10）It is connected, and the cunning Block（9）One end withstand on coupler body（11）Roller（10）On, coupler body（11）It is equal including two pusher dogs being oppositely arranged, each pusher dog There are a rotating shaft, the coupler body（11）It is also associated with shift fork rocking arm set, described shift fork rocking arm set one end and unlocking suction nozzle（18） It is connected, the other end is connected with collision bead mechanism（16）, the collision bead mechanism（16）It is connected with projection（15）, the projection（15）With shaking Arm installation axle is connected, and the rocking arm installation axle is connected with shift fork rocking arm set.
2. 2. drag parachute latch hook device according to claim 1, it is characterised in that：The stop bushing（4）It is provided with shell outside Body（8）, the housing（8）Inside it is provided with step.
3. 3. drag parachute latch hook device according to claim 2, it is characterised in that：The housing（8）Upper setting is fluted, recessed O-ring seal is provided with groove.
4. 4. drag parachute latch hook device according to claim 3, it is characterised in that：The O-ring seal includes the first fluid sealant Circle（3）, the second O-ring seal（6）With the 3rd O-ring seal（7）.
5. 5. drag parachute latch hook device according to claim 3, it is characterised in that：First rocking arm installation axle（13）Pass through small axle By rocking arm and housing（8）It is fixedly connected；Second rocking arm installation axle（14）By bolt by shift fork rocking arm set（17）With housing（8）Phase Fixed is determined；Collision bead mechanism（16）Installed in shift fork rocking arm set（17）Long rocking arm on, two coupler bodies（11）Used respectively by bushing Fixing bolt（12）It is screwed onto housing（8）Upper and lower part, two coupler bodies（11）On respectively have a torque spring.
6. 6. drag parachute latch hook device according to claim 4, it is characterised in that：Unlocking suction nozzle（18）It is welded on housing （8）On.
7. 7. drag parachute latch hook device according to claim 5, it is characterised in that：The collision bead mechanism（16）Including collision bead （19）, adjustable plug screw（20）With collision bead compression spring（21）.
8. 8. drag parachute latch hook device according to claim 6, it is characterised in that：Two collision beads（19）Being each passed through two can Adjust plug screw（20）, and by adjustable plug screw（20）It is fixed on shift fork rocking arm set（17）Long rocking arm on, collision bead compression spring（21）Pressure Contracting is in two collision beads（19）Between.
9. 9. drag parachute latch hook device according to claim 7, it is characterised in that：Fixing bolt is provided with the rotating shaft （12）.