CN211766329U - Guiding parachute ejection device - Google Patents

Abstract

The utility model provides a guide parachute jettison device, concretely relates to unmanned aerial vehicle parachuting technical field, through adopting umbrella storehouse shell, its inside umbrella storehouse baffle that is provided with, be provided with the transmission guiding tube on the umbrella storehouse shell, the inside transmission guide pole that is provided with of transmission guiding tube, umbrella storehouse baffle below is provided with gas generator, gas generator and transmission guiding tube intercommunication are provided with the umbrella rope on the umbrella storehouse baffle, the parachute is connected to the umbrella rope, the transmission guide pole sets up in the technical scheme of the junction of umbrella rope and parachute. The device has solved the unstability of opening the parachute when current unmanned aerial vehicle uses the parachute, postpones high problem, produces a large amount of gas through gas generator and enters into the transmission guiding tube, and atmospheric pressure reaches the critical value in the twinkling of an eye, promotes the outside ejection of transmission guiding rod, launches the technological effect that the in-process drove the parachute and open, has improved the security of unmanned aerial vehicle parachuting system and the ability of keeping away the danger in the proruption environment.

Description

Guiding parachute ejection device

Technical Field

The utility model relates to an unmanned aerial vehicle parachuting technical field particularly, relates to a guide formula parachute jettison device.

Background

In recent years, with the popularization of unmanned aerial vehicle technology, more and more unmanned aerial vehicles appear in people's daily life. However, due to some special conditions, the accident of crash can occur to the unmanned aerial vehicle, and hidden danger is caused to the owner of the unmanned aerial vehicle and ground pedestrians. At present, the parachute-opening state of most of unmanned aerial vehicle parachuting ejection devices is disordered, and the ejection mode is air pressure and a spring. The parachute leaves the umbrella storehouse after, need fall with the help of unmanned aerial vehicle and reach the outside air current that produces behind the certain falling speed, accomplish the intermediate process from fold condition to the state of opening the parachute completely. The process has extremely high failure possibility and long-time delay, reduces the reliability of parachute opening, and limits the application field of the parachute. Postpone high, the low poor problem of unmanned aerial vehicle security that leads to of reliability to above-mentioned parachute opening, the utility model provides a solution that parachute opening is fast, the reliability is high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a guiding parachute jettison device, it can be directed against in the not enough of prior art, proposes the solution, has under emergency, opens the effect of parachute fast, postpones lowly, and the good reliability.

The embodiment of the utility model is realized like this:

the utility model provides a guiding parachute jettison device, includes umbrella storehouse shell, and the inside umbrella storehouse baffle that is provided with of umbrella storehouse shell is provided with the transmission guiding tube on the umbrella storehouse shell, and the inside transmission guiding rod that is provided with of transmission guiding tube, umbrella storehouse baffle below are provided with gas generator, and gas generator and transmission guiding tube intercommunication are provided with the umbrella rope on the umbrella storehouse baffle, and the parachute is connected to the umbrella rope, and the one end of transmission guiding rod is connected in the junction of umbrella rope and parachute. When the condition takes place, gaseous generating device produces a large amount of gas and gushes into the transmission guide tube, and the inside atmospheric pressure of transmission guide tube reaches the critical value in the twinkling of an eye, promotes the transmission guide rod and launches along transmission guide tube direction, because the parachute is connected to the transmission guide rod, can realize unfolding to the ideal state of opening the umbrella from fold condition in the short time along predetermined route (the orientation direction of transmission guide tube) when making the parachute launch. This structure has solved the problem that traditional unmanned aerial vehicle parachuting in-process need reach just can open the parachute completely after certain falling speed, even also can open the parachute under low latitude state or emergency, has the advantage that postpone low, the reliability is high. The parachute cabin partition plate separates the parachute from the gas generator, the parachute is stored in a space independently, the parachute is opened unaffected, and stability is improved.

The utility model discloses an in some embodiments, above-mentioned umbrella storehouse shell top is provided with umbrella storehouse apron, and the transmission guide pole is pushed down to umbrella storehouse apron, and the junction of umbrella storehouse apron and umbrella storehouse shell is provided with the magnetite. Because unmanned aerial vehicle itself may do some limit actions (for example, action such as sharp turn, upset), set up the umbrella storehouse apron and seal the umbrella storehouse shell is inside and push down the transmission guide pole, can be so that whole guide formula parachute jettison device is in a stable state, can not open because of the accident. Meanwhile, the magnet arranged at the joint can firmly absorb the two parts, and when the pressure in the launching guide pipe reaches a critical value, the attraction of the magnet is broken through, and the attraction of the magnet cannot influence the opening of the parachute.

In some embodiments of the present invention, the gas generator is a physical gas generator, the physical gas generator includes a physical gas generator housing, a gas guide striker is disposed at the bottom of the physical gas generator housing, a physical gas generation gas guide channel is disposed at the bottom of the physical gas generator housing, the physical gas generation gas guide channel is communicated with the gas guide striker, a physical gas generator inner tube is disposed inside the physical gas generator housing, a gas cylinder is disposed inside the physical gas generator inner tube, a compression spring is disposed around the gas cylinder, a spring mounting ring is disposed at the top of the physical gas generator housing, a limit screw is disposed on the physical gas generator inner tube, a limit groove is disposed on the surface of the physical gas generator housing along the axial direction, a screw head of the limit screw extends out of the limit groove, and a bearing mounting seat is disposed on the outer surface of the physical gas generator housing, a limiting sliding block penetrates through the inside of the bearing mounting seat, a concave notch is formed in one side, close to the physical gas generator shell, of the limiting sliding block, and the limiting sliding block is located below a limiting screw. Under the condition of non-excitation state, the inner tube of the physical gas generator and the spring mounting ring respectively support against two ends of the spring to compress the spring. After the limiting sliding block moves, the concave notch on the limiting sliding block is aligned to the screw head of the limiting screw, at the moment, under the thrust action of the compression spring, the limiting screw penetrates through the concave notch to move to the bottom of the limiting groove, the whole physical gas generator inner tube drives the bottle opening of the gas cylinder to impact on the gas guide striker, the gas guide striker pierces through the bottle opening of the gas cylinder, compressed gas in the gas cylinder is released, and the compressed gas enters the physical gas generation gas guide channel through the gas guide striker.

The utility model discloses an in some embodiments, be provided with upper bearing fixed screw above the limit slide on the above-mentioned bearing mount pad, be provided with the pressure-bearing on the screw rod of upper bearing fixed screw, be provided with down bearing fixed screw below the limit slide on the bearing mount pad, be provided with the pressure-bearing on the screw rod of lower bearing fixed screw, pressure-bearing and limit slide rolling contact. The bearing mounting seat is used for fixing the limiting slide block, the bearing on the bearing mounting seat is in rolling contact with the limiting slide block, and the limiting slide block can only encounter rolling friction force, so that the limiting slide block can be easily moved. The lower bearing fixing screw and the upper bearing fixing screw are used for facilitating the fixing of the pressure bearing.

In some embodiments of the present invention, the gas cylinder is threadedly connected to the physical gas generator inner tube. Compared with other fixed structures, the threaded connection has the advantages of simple processing, convenient disassembly and better connection stability.

The utility model discloses an in some embodiments, install spacing bearing, spacing bearing and spacing slider rolling contact on the screw rod of spacing screw. The limiting bearing is arranged to prevent the limiting screw from being in direct contact with the limiting sliding block to generate large friction force, and the limiting sliding block and the limiting bearing generate small rolling friction force when moving.

The utility model discloses an in some embodiments, physics formula gas generator shell surface is provided with the motor mount pad, is provided with the motor on the motor mount pad, is connected with the motor linking arm on the output shaft of motor, and the one end of motor linking arm is connected with the slider linking arm, and spacing slider is connected to the one end of slider linking arm. Limiting slide block is connected to slider linking arm one end, and the motor linking arm is connected to the other end, and the motor linking arm is driven rotatoryly by the motor output shaft, and the motor linking arm passes through slider linking arm pulling limiting slide block and removes. The sliding block is controlled by the motor, so that the rapid response of the whole emergency system can be realized, and the gas cylinder can release gas in time.

In some embodiments of the present invention, the physical gas generation gas guide channel communicates with the launch guide tube. The physical gas generation gas guide channel is communicated with the emission guide pipe, so that compressed gas in the gas cylinder can completely enter the emission guide pipe to generate pressure, and the emission guide rod is favorably popped out.

In some embodiments of the utility model, the gas generator is chemical gas generator, and chemical gas generator includes chemical gas generator shell, and chemical gas generator shell port department sealing connection has the medicine storehouse, sets up gaseous release mouth below the medicine storehouse, and the bottom in the chemical gas generator shell is provided with chemical gas generator gas guide channel. Chemical substances which release a large amount of gas in a short time are arranged in a medicine bin of the chemical gas generator, and when the chemical substances release a large amount of gas, the chemical substances enter the shell of the chemical gas generator through a gas release port and then enter a gas guide channel of the chemical gas generator. The chemical gas generator shell is hermetically connected with the medicine bin, so that gas is prevented from leaking.

In some embodiments of the present invention, the chemical gas generator gas introduction passage communicates with the launch guide tube. The gas generated by the medicine bin can completely enter the launching guide pipe, and a large amount of gas generates pressure to facilitate the launching guide rod to pop out.

The embodiment of the utility model provides an at least, have following advantage or beneficial effect:

the utility model provides a guide parachute jettison device, through adopting umbrella storehouse shell, inside is provided with umbrella storehouse baffle, is provided with the transmission guiding tube on the umbrella storehouse shell, and the inside transmission guide pole that is provided with of transmission guiding tube, umbrella storehouse baffle below are provided with gas generator, and gas generator and transmission guiding tube intercommunication are provided with the umbrella rope on the umbrella storehouse baffle, and the parachute is connected to the umbrella rope, and the transmission guide pole sets up in the structure of the junction of umbrella rope and parachute. Under emergency, the gas generator generates a large amount of gas to enter the launching guide pipe, the gas pressure instantly reaches a critical value, the launching guide rod is pushed to be ejected outwards, and the parachute is driven to be opened in the ejecting process. The device has solved and can only rely on the passive parachute opening of falling speed and lead to postponing the problem high, that the security is poor when current unmanned aerial vehicle uses the parachute, has improved unmanned aerial vehicle parachute system's security, has improved unmanned aerial vehicle's ability of keeping away the danger in emergency environment.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is an exploded view of a guided parachute launching device structure provided in an embodiment of the present invention;

fig. 2 is an exploded view of a physical gas generator according to an embodiment of the present invention;

fig. 3 is a front view of a physical gas generator according to an embodiment of the present invention;

fig. 4 is a cross-sectional view of a physical gas generator according to an embodiment of the present invention;

fig. 5 is a top view of a physical gas generator according to an embodiment of the present invention;

fig. 6 is an exploded view of a chemical gas generator according to an embodiment of the present invention;

fig. 7 is a front view of a chemical gas generator according to an embodiment of the present invention;

fig. 8 is a cross-sectional view of a chemical gas generator according to an embodiment of the present invention;

fig. 9 is a top view of a chemical gas generator according to an embodiment of the present invention;

fig. 10 is a schematic view of stacking parachutes according to an embodiment of the present invention;

fig. 11 is a schematic view illustrating the opening of the parachute according to the embodiment of the present invention;

fig. 12 is a schematic diagram of an embodiment of the present invention after installation of a physical gas generator;

fig. 13 is a schematic diagram of the chemical gas generator according to the embodiment of the present invention after installation.

Icon: 1-a parachute silo housing, 101-a launching guide tube, 102-an aircraft attachment hole, 103-a parachute, 104-a parachute line, 105-a magnet mounting groove, 2-a parachute silo cover plate, 201-a magnet mounting groove top, 3-a parachute silo partition plate, 4-a launching guide rod, 5-a magnet, 6-a physical gas generator, 601-a physical gas generator housing, 602-a gas guide striker, 603-a physical gas generator inner tube, 604-a compression spring, 605-a gas cylinder, 606-a spring mounting ring, 607-a motor, 608-a motor mount, 609-a slider attachment arm, 610-a motor attachment arm, 611-an attachment arm screw, 612-a limit slider, 613-a lower bearing attachment screw, 614-an upper bearing attachment screw, 615-bearing, 616-motor mounting screw, 617-spring mounting ring mounting screw, 618-limiting screw, 619-limiting bearing, 620-bearing mounting seat, 621-physical gas generator gas guide channel, 622-limiting groove, 7-chemical gas generator, 701-medicine bin, 702-chemical gas generator shell, 703-shell connecting screw, 704-gasket, 705-shell connecting nut, 706-chemical gas generator gas guide channel, 707-gas release port, 8-gas generator connecting sheet and 9-gas generator connecting screw.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, the description is only for convenience of description of the present invention and simplification, but the indication or suggestion that the device or element to be referred must have a specific position, be constructed and operated in a specific position, and therefore, the present invention should not be construed as being limited thereto. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not require that the components be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present invention, "a plurality" means at least 2.

In the description of the embodiments of the present invention, it should be further noted that unless explicitly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Example 1

Referring to fig. 1 to 5 and 10 to 12, a structure of a guided parachute launching apparatus is schematically shown.

As shown in fig. 1, 10 and 11, a guided parachute ejection device comprises a parachute cabin housing 1, a parachute cabin partition plate 3 is arranged inside the parachute cabin housing 1, a launching guide pipe 101 is arranged on the parachute cabin housing 1, a launching guide rod 4 is arranged inside the launching guide pipe 101, good air tightness is achieved between the launching guide pipe 101 and the launching guide rod 4, the mass of the launching guide rod 4 can be freely selected according to the diameter of a parachute 103, and any materials such as metal, plastic, sponge and foam can be used. The gas generator is arranged below the umbrella bin partition plate 3 and communicated with the launching guide pipe 101, the umbrella rope 104 is arranged on the umbrella bin partition plate 3, the umbrella rope 104 is connected with the parachute 103, and the top end of the launching guide rod 4 is provided with a connecting hole which is fixedly connected with the connecting part of the umbrella rope 104 and the parachute 103. When the condition takes place, gas generator produces a large amount of gas and gushes into transmission guide pipe 101, and the inside atmospheric pressure of transmission guide pipe 101 reaches the critical value in the twinkling of an eye, promotes transmission guide rod 4 and launches along transmission guide pipe 101 direction, and transmission guide pipe 101 slope sets up for many transmission guide rod 4 outwards launch and show the scattering state, because transmission guide rod 4 connects parachute 103, can realize in the short time along predetermined route when launching parachute 103 and expand to ideal parachute-opening state (as shown in fig. 11) from fold state. The parachute 103 can be opened even in a low altitude state or in an emergency, and has the advantages of low delay and high reliability. The parachute cabin partition plate 3 separates the parachute 103 from the gas generator, and the parachute 103 is independently stacked above the parachute cabin partition plate 3 (as shown in fig. 10), so that the parachute 103 is not affected when being opened, and the safety is improved.

It should be noted that the bottom of the umbrella chamber housing 1 is provided with a mounting groove (shown in fig. 1) for mounting the gas generator, and is fixed by a gas generator connecting sheet 8 and a gas generator connecting screw 9. The physical gas generator 6 and the umbrella chamber housing 1 are connected as shown in figure 12. The umbrella cabin shell 1 is also provided with an aircraft connecting hole 102 for fixing the whole guided parachute ejecting device on an aircraft. One part of the gas generating device penetrates through the umbrella cabin clapboard 3, and one end of the umbrella rope 104 is fixed on the gas generating device (as shown in figure 10).

In an implementation manner of the embodiment of the present invention, as shown in fig. 1, the top of the umbrella housing case 1 is provided with an umbrella housing cover plate 2, the umbrella housing cover plate 2 presses the launching guiding rod 4, and the contact position of the umbrella housing cover plate 2 and the umbrella housing case 1 is provided with a magnet 5. Umbrella storehouse shell 1 edge sets up magnetite mounting groove 105, and umbrella storehouse apron 2 sets up magnetite mounting groove top 201 in corresponding the position, sets up magnetite 5 in the magnetite mounting groove 105. When the canopy cover 2 is mounted on the canopy housing 1, the magnet 5 in the magnet mounting groove 105 attracts the magnet mounting groove top 201, the canopy housing 1 and the canopy cover 2 are connected together, and the canopy cover 2 presses a part of the launching guide rod 4 (as shown in fig. 12 or fig. 13). This structure makes whole guide type parachute jettison device firmly link together to when needs are opened, and when the pressure in transmission guide tube 101 reached the critical value, break through the appeal of magnetite 5, transmission guide rod 4 backs up parachute cabin apron 2, just can open parachute 103 smoothly.

In an implementation manner of the embodiment of the present invention, as shown in fig. 1, fig. 2, fig. 3 and fig. 4, the gas generator is a physical gas generator 6, the physical gas generator 6 includes a physical gas generator housing 601, a gas guide striker 602 is disposed at the bottom inside the physical gas generator housing 601, a physical gas generator gas guide channel 621 is disposed at the bottom of the physical gas generator housing 601, the physical gas generator gas guide channel 621 is communicated with the gas guide striker 602, a physical gas generator inner tube 603 is disposed inside the physical gas generator housing 601, a gas cylinder 605 is disposed inside the physical gas generator inner tube 603, a compression spring 604 is disposed around the outside of the gas cylinder 605, a spring mounting ring 606 is disposed at the top of the physical gas generator housing 601, a limit screw 618 is disposed on the physical gas generator inner tube 603, a limit groove 622 is disposed on the surface of the physical gas generator housing 601 along the axial direction, the head of the limit screw 618 extends out of the limit groove 622, the outer surface of the physical gas generator housing 601 is provided with a bearing mounting seat 620, the inside of the bearing mounting seat 620 is provided with a limit slider 612 in a penetrating manner, one side of the limit slider 612 close to the physical gas generator housing 601 is provided with a concave notch, and the limit slider 612 is positioned below the limit screw 618. In the non-excited state, the inner tube 603 of the physical gas generator and the spring mounting ring 606 respectively abut against two ends of the compression spring 604 to compress the compression spring 604, at this time, the limiting screw 618 is abutted by the limiting slider 612, and the inner tube 603 of the physical gas generator is in a static state and has a tendency of moving downward. After the limiting slider 612 moves until the concave notch on the limiting slider 612 is aligned with the limiting screw 618, at this time, under the thrust action of the compression spring 604, the limiting screw 618 passes through the concave notch to move to the bottom of the limiting groove 622, the whole physical gas generator inner tube 603 drives the opening of the gas cylinder 605 to impact on the gas guide striker 602, the gas guide striker 602 pierces the opening of the gas cylinder 605, the compressed gas in the gas cylinder 605 is released, and the compressed gas enters the gas guide channel 621 of the physical gas generator through the gas guide striker 602.

The utility model discloses in an embodiment of the embodiment, as shown in fig. 2, fig. 3, fig. 4, be provided with upper bearing set screw 614 above limit slider 612 on bearing mount 620, be provided with pressure bearing 615 on upper bearing set screw 614's the screw rod, be provided with lower bearing set screw 613 below limit slider 612 on bearing mount 620, be provided with pressure bearing 615 on lower bearing set screw 613's the screw rod, pressure bearing 615 and limit slider 612 rolling contact. The bearing mounting seat 620 is used for fixing the limit sliding block 612, the bearing 615 on the bearing mounting seat 620 is in rolling contact with the limit sliding block 612, and the limit sliding block 612 can be easily moved because the limit sliding block 612 only meets rolling friction force. The lower bearing fixing screw 613 and the upper bearing fixing screw 614 are for fixing the pressure bearing 615 and for limiting the pressure bearing 615.

In one implementation of the embodiment of the present invention, the gas cylinder 605 is screwed to the physical gas generator inner tube 603. As shown in fig. 4, the neck of the gas cylinder 605 is connected with the inner tube 603 of the physical gas generator by screw threads, so that the gas cylinder is convenient to mount and dismount and has better stability.

In an embodiment of the present invention, the screw of the limit screw 618 is provided with a limit bearing 619, and the limit bearing 619 is in rolling contact with the limit slider 612. The limiting bearing 619 is arranged to prevent the limiting screw 618 from directly contacting the limiting slide block 612 to generate large friction force, the limiting slide block 612 generates small rolling friction force with the limiting bearing 619 when moving, and the limiting bearing 619 can penetrate through the concave notch of the limiting slide block 612.

It should be noted that the limit slider 612 is in rolling contact with the limit bearing 619, and the limit slider 612 is in rolling contact with the pressure bearing 615. The friction force of rolling contact is small, and the guiding type parachute ejection device is convenient to respond quickly.

The utility model discloses in an embodiment of the embodiment, physical gas generator shell 601 surface is provided with motor mount pad 608, is provided with motor 607 on the motor mount pad 608, is connected with motor connecting arm 610 on the output shaft of motor 607, and the one end of motor connecting arm 610 is connected with slider connecting arm 609, and limit slider 612 is connected to the one end of slider connecting arm 609. One end of the sliding block connecting arm 609 is connected with the limiting sliding block 612, the other end of the sliding block connecting arm 609 is connected with the motor connecting arm 610, the motor connecting arm 610 is driven by an output shaft of the motor 607 to rotate, and the motor connecting arm 610 pulls the limiting sliding block 612 to move through the sliding block connecting arm 609. The motor 607 is used for controlling the limiting sliding block 612, so that the automatic control and quick response of the whole emergency system can be realized, and the gas can be released from the gas cylinder 605 in time.

In an implementation manner of the embodiment of the present invention, as shown in fig. 2 and fig. 5, a motor mounting screw 616 is provided for fixing the motor 607 on the motor mounting seat 608, and the motor connecting arm 610 and the motor 607, the motor connecting arm 610 and the slider connecting arm 609, the slider connecting arm 609 and the limit slider 612 are respectively connected by three connecting arm screws 611.

It should be noted that the electric machine 607 is electrically connected to a battery of the aircraft, and the battery is electrically connected to a control system of the aircraft. The control system controls the circuit between the battery and the motor 607 to control the start of the motor 607.

In one embodiment of the present invention, the physical gas generator gas guide channel 621 communicates with the launching guide tube 101. The physical gas generator gas guide channel 621 is communicated with the launching guide pipe 101 and does not leak, so that compressed gas in the gas cylinder 605 can completely enter the launching guide pipe 101 to generate pressure, and the launching guide rod 4 can be ejected conveniently.

Example 2

The structure of the embodiment is basically the same as that of the embodiment 1, and the only difference is that the gas generator is arranged as a chemical gas generator 7, and the chemical gas generator 7 is arranged on the umbrella cabin shell 1 and connected as shown in figure 13.

In an embodiment of the present invention, as shown in fig. 6, 7, 8 and 9, the chemical gas generator 7 includes a chemical gas generator housing 702, a chemical cartridge 701 is hermetically connected to a port of the chemical gas generator housing 702, a gas release port 707 is provided below the chemical cartridge 701, and a chemical gas generator gas guide passage 706 is provided at the bottom inside the chemical gas generator housing 702. Chemical substances which release a large amount of gas in a short time are arranged in the medicine bin 701 of the chemical gas generator 7, and when the aircraft is in an emergency and the chemical substances release a large amount of gas, the chemical substances enter the chemical gas generator shell 702 through the gas release port 707 and then enter the chemical gas generator gas guide channel 706. The chemical gas generator shell 702 is hermetically connected with the medicine bin 701, so that gas is prevented from leaking.

In one implementation of the present embodiment, the chemical gas generator housing 702 and the cartridge 701 are bolted together (as shown in fig. 6, 7 and 9). A shell connecting screw 703, a shell connecting nut 705 and a gasket 704 are arranged to hermetically connect the chemical gas generator shell 702 and the cartridge 701.

It should be noted that the inside of the chemical bin 701 is filled with a generating compound such as nitrocellulose, sodium azide, and the like, and the inside of the chemical bin 701 is provided with an igniter, and the igniter is electrically connected with an aircraft control system. When the aircraft is in an emergency, the control system controls the igniter to excite chemical reaction, and a large amount of gas is generated instantaneously. The severity of the chemical reaction does not exceed the tolerance limits of the cartridge 701.

In some embodiments of the present invention, the chemical gas generator gas introduction passage 706 communicates with the launch guide tube 101. After the gas generated by the cartridge 701 can completely enter the launching guide pipe 101 to generate pressure, which is beneficial to ejecting the launching guide rod 4.

The working principle is as follows:

when the physical gas generator 6 is used, the control system of the aircraft detects an emergency situation, or when an operator sends an parachute opening signal through a remote controller, the control system energizes the motor 607. As shown in fig. 3, the motor 607 drives the motor connecting arm 610 to rotate, the motor connecting arm 610 drives the slider connecting arm 609 to move rightwards, and the slider connecting arm 609 pulls the limiting slider 612 to move rightwards. When the concave notch on the limiting slider 612 is aligned with the limiting screw 618, the limiting screw 618 passes through the concave notch to move to the bottom of the limiting groove 622 under the thrust action of the compression spring 604, and at this time, the inner tube 603 of the physical gas generator also drives the opening of the gas cylinder 605 to impact on the gas guide striker 602. The compressed gas in the gas cylinder 605 enters the physical gas generator gas guide passage 621 through the gas guide striker 602 and then enters the transmitting guide tube 101. The pressure generated by the gas in the emission guide pipe 101 reaches a critical value, the attraction of the magnet 5 is broken through, at the moment, the emission guide rod 4 in the emission guide pipe 101 pushes the umbrella bin cover plate 2 open and is ejected outwards, and the emission guide rod 4 drives the parachute 103 to unfold in the ejection process.

When the chemical gas generator 7 is used, when the control system of the aircraft detects an emergency situation or an operator sends an umbrella opening signal through a remote controller, the control system controls an igniter to generate electric sparks and ignite a generating compound, the generating compound generates a chemical reaction to generate a large amount of gas, and the gas enters the gas guide channel 706 of the chemical gas generator through the gas release port 707 and then enters the launching guide tube 101. The pressure generated by the gas in the emission guide pipe 101 reaches a critical value, the attraction of the magnet 5 is broken through, at the moment, the emission guide rod 4 in the emission guide pipe 101 pushes the umbrella bin cover plate 2 open and is ejected outwards, and the emission guide rod 4 drives the parachute 103 to unfold in the ejection process.

To sum up, the utility model provides a guiding parachute ejection device, which comprises a parachute cabin shell 1, a parachute cabin clapboard 3 is arranged in the parachute cabin shell 1, a launching guide pipe 101 is arranged on the parachute cabin shell 1, and a launching guide rod 4 is arranged in the launching guide pipe 101; a gas generator is arranged below the umbrella bin partition plate 3 and is communicated with the launching guide pipe 101; the umbrella cabin partition 3 is provided with an umbrella rope 104, the umbrella rope 104 is connected with the parachute 103, and the launching guide rod 4 is arranged at the joint of the umbrella rope 104 and the parachute 103. When the aircraft is in an emergency, the control system controls the gas generator to generate a large amount of gas to enter the launching guide pipe 101, the gas pressure instantly reaches a critical value, the launching guide rod 4 is pushed to launch outwards, and the launching guide rod 4 drives the parachute 103 to open in the launching process. The guiding parachute ejection device can be triggered to open the parachute in any state of the unmanned aerial vehicle, and the parachute 103 can be completely unfolded from a folded state to an ideal parachute-opening shape in a very short time. The problem of when current unmanned aerial vehicle used parachute-opening unstability, postpone highly is solved, the security of unmanned aerial vehicle parachuting system has been improved, the ability that unmanned aerial vehicle kept away the danger in emergency environment has been improved.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a guiding parachute jettison device, a serial communication port, including umbrella storehouse shell, the inside umbrella storehouse baffle that is provided with of umbrella storehouse shell, be provided with the transmission guiding tube on the umbrella storehouse shell, the inside transmission guiding rod that is provided with of transmission guiding tube, umbrella storehouse baffle below is provided with gas generator, gas generator and transmission guiding tube intercommunication, be provided with the umbrella rope on the umbrella storehouse baffle, the parachute is connected to the umbrella rope, the one end of transmission guiding rod is connected in the junction of umbrella rope and parachute.

2. A guided parachute ejection apparatus as claimed in claim 1, wherein a parachute bay cover is provided on a top of the parachute bay housing, the parachute bay cover presses the launching guide rod, and a magnet is provided at a contact position of the parachute bay cover and the parachute bay housing.

3. The guided parachute ejection device according to claim 1, wherein the gas generator is a physical gas generator, the physical gas generator comprises a physical gas generator housing, a gas guide striker is arranged at the bottom inside the physical gas generator housing, a physical gas generation gas guide channel is arranged at the bottom of the physical gas generator housing and communicated with the gas guide striker, a physical gas generator inner tube is arranged inside the physical gas generator housing, a gas cylinder is arranged inside the physical gas generator inner tube, a compression spring is arranged around the outside of the gas cylinder, a spring mounting ring is arranged at the top of the physical gas generator housing, a limit screw is arranged on the physical gas generator inner tube, and a limit groove along the axial direction is arranged on the surface of the physical gas generator housing, the limiting groove is stretched out to limit screw's spiral shell head, physics formula gas generator shell surface is provided with the bearing mount pad, the inside limit slide that is provided with that passes of bearing mount pad, limit slide is provided with concave type breach on one side near physics formula gas generator shell, limit slide is located limit screw's below.

4. A guided parachute ejection apparatus as claimed in claim 3, wherein the bearing mount is provided with an upper bearing fixing screw above the limit slider, a screw of the upper bearing fixing screw is provided with a pressure bearing, the bearing mount is provided with a lower bearing fixing screw below the limit slider, the screw of the lower bearing fixing screw is provided with a pressure bearing, and the pressure bearing is in rolling contact with the limit slider.

5. A guided parachute ejection apparatus as claimed in claim 3, wherein the gas cylinder is screw-coupled to the physical gas generator inner tube.

6. A guided parachute ejection apparatus as claimed in claim 3, wherein a limit bearing is mounted on a screw of the limit screw, and the limit bearing is in rolling contact with the limit slider.

7. A guided parachute ejection device as in claim 3, wherein a motor mounting seat is arranged on the outer surface of the physical gas generator housing, a motor is arranged on the motor mounting seat, a motor connecting arm is connected to the output shaft of the motor, a slider connecting arm is connected to one end of the motor connecting arm, and a limiting slider is connected to one end of the slider connecting arm.

8. A guided parachute ejection device as in claim 3, wherein the physical gas generation gas guide channel is in communication with the launch guide tube.

9. The guided parachute ejection device of claim 1, wherein the gas generator is a chemical gas generator, the chemical gas generator comprises a chemical gas generator housing, a chemical bin is hermetically connected to a port of the chemical gas generator housing, a gas release port is formed below the chemical bin, and a chemical gas generator gas guide channel is formed in the bottom of the chemical gas generator housing.

10. A guided parachute ejection device as in claim 9, wherein the chemical gas generator gas guide channel communicates with the launching guide tube.

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