CN108945478A - The parachute opener of unmanned plane - Google Patents

Abstract

A kind of parachute opener of unmanned plane characterized by comprising umbrella cabin is located at unmanned plane internal body, and for accommodating parachute, the umbrella cabin is provided with opening in the bottom of unmanned plane body；Umbrella hatchcover, including the first lid and the second lid, when the umbrella hatchcover is closed, first lid and the second lid are bonded to each other to cover the opening, when the umbrella hatchcover is opened, first lid and the second lid are separated from each other and are unfolded respectively to opposite two sides；Locking mechanism, for controlling opening or closing for the umbrella hatchcover.The parachute opener of unmanned plane provided by the invention using down-throwing parachute-opening mode and uses opposite opened umbrella hatchcover, improves the safety of parachute opener, effectively increase the success rate of parachute-opening.

Description

UAV parachute opening device

technical field

The invention relates to the field of parachute recovery of unmanned aerial vehicles, in particular to an unmanned aerial vehicle parachute opening device.

Background technique

Unmanned aircraft is referred to as "drone" for short. In recent years, the application fields of drones have become more and more extensive. Most drones need to ensure that they return to the ground safely and recover the whole machine and airborne equipment after completing their work. At present, the commonly used UAV recovery methods include landing gear landing recovery, net collision recovery, parachute recovery, air cushion landing recovery, etc.

For the way of parachute recovery, the commonly used UAV parachute opening methods are generally divided into upward throwing and downward throwing. Because the parachute is placed in the umbrella cabin, the traditional drop-down parachute may fail to open the parachute due to factors such as inflexible metal hinge connection and unstable flight attitude of the drone; There is a risk of interfering with the parachute rope for other reasons, which may easily cause the parachute to be entangled with the body and cause a flight accident.

Contents of the invention

In view of the above problems, in order to improve the reliability of the UAV parachute opening device, the present invention discloses a UAV parachute opening device, which is characterized in that it includes:

An umbrella cabin, located inside the drone body, for accommodating a parachute, the umbrella cabin is provided with an opening at the bottom of the drone body;

The umbrella cover includes a first cover and a second cover. When the umbrella cover is closed, the first cover and the second cover are attached to each other to cover the opening. When the umbrella cover is opened , the first cover and the second cover are separated from each other and unfolded to opposite sides;

The locking mechanism is used to control the opening or closing of the umbrella canopy.

In some embodiments, the canopy is a part of the skin of the drone, and the locking mechanism is arranged on the inside of the skin of the drone. When the canopy is closed, the canopy and the canopy The drone body is connected smoothly.

In some embodiments, the first cover and the second cover are respectively hinged between the unfolded side and the skin of the drone through one or more pin shafts, and the pin shafts are each provided with torsion spring,

When the canopy cover is closed, the torsion spring produces elastic deformation; when the locking mechanism unlocks the canopy to open the canopy, the torsion spring assists the first cover or the second cover under the action of elastic force. The two covers are unfolded.

In some embodiments, when the torsion spring is in a relaxed state, the first cover or the second cover forms an included angle greater than 90 degrees with the corresponding skin surface of the drone.

In some embodiments, the first cover is a segmented structure, including a first part, a second part and a third part; when the first cover is unfolded, the first part and the second part A certain angle is formed between the components and between the second component and the third component to generate a windward area in the direction of the relative airflow;

The second cover is symmetrical to the first cover.

In some embodiments, between the first component and the second component, between the second component and the third component, and between the third component and the skin of the UAV are all passed One or more pin shafts are hinged, and torsion springs are arranged on the pin shafts;

When the canopy cover is closed, the torsion spring produces elastic deformation; when the locking mechanism unlocks the canopy to open the canopy, the torsion spring assists the first cover to unfold under the action of elastic force, And a certain angle is formed between the first component and the second component, and between the second component and the third component;

The second cover is symmetrical to the first cover.

In some embodiments, when the umbrella cover is closed, the first part and the skin of the drone are fixedly connected by the locking mechanism to lock the first cover; the second cover The locking method of the body is the same as that of the first cover.

In some embodiments, the locking mechanism includes a first locking part and a second locking part, the first locking part and the second locking part have the same structure and are used to lock the first cover and the second cover respectively one of the.

Based on the above technical solution, it can be seen that the present invention at least achieves the following beneficial effects:

The parachute opening device of the unmanned aerial vehicle provided in the present invention adopts a downward-throwing parachute opening method. After the parachute cover is opened, the parachute can fall and open due to its own gravity, eliminating the need for parachute guns, parachute barrels, etc., which are prone to safety hazards. The hidden parts improve the safety of the parachute opening device and reduce the total weight of the drone; at the same time, the use of the split canopy cover reduces the cover of the canopy opening after the parachute is opened, which is more conducive to the parachute The parachute can be separated from the parachute smoothly, and the possibility of parachute and body entanglement is reduced, which effectively improves the success rate of parachute opening; in addition, the parachute cover is inseparable from the UAV body, which increases the reusability of the parachute opening device, and The use cost is reduced.

Description of drawings

Fig. 1 is the schematic diagram of the parachute device of unmanned aerial vehicle in the embodiment of the present invention;

Fig. 2 is the schematic diagram of the parachute opening device in Fig. 1 under the closed state of the umbrella hatch;

Fig. 3a and Fig. 3b are the schematic diagrams of the parachute opening device in Fig. 1 when the parachute canopy is not fully opened;

Fig. 4 is a schematic diagram of the parachute opening device in Fig. 1 after the parachute canopy is fully opened.

Detailed ways

In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below. Apparently, the described embodiments are some, not all, embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by those skilled in the art to which the present invention belongs.

FIG. 1 is an umbrella opening device of an unmanned aerial vehicle according to an embodiment of the present invention. As shown in FIG. 1 , it includes an umbrella cabin 5 , an umbrella cabin cover and a locking mechanism 3 . Umbrella cabin 5 is positioned at the drone body interior, and is provided with opening at the bottom of drone body. The parachute is placed in the umbrella cabin 5 at ordinary times; When the parachute needs to be used, the parachute falls from the opening of the umbrella cabin and unfolds. The umbrella canopy is a split umbrella canopy, comprising a first cover 4 and a second cover 6 . Usually the canopy is closed, and the first cover 4 and the second cover 6 fit together to cover the opening of the canopy; when a parachute is needed, the canopy is opened, the first cover 4 and the second cover 6 are separated from each other and Expand to opposite sides respectively, so that the parachute can fall and expand through the opening of the umbrella cabin. The locking mechanism 3 is used to control the opening or closing of the umbrella canopy.

The parachute opening device of the unmanned aerial vehicle provided in the embodiment of the present invention adopts a downward-throwing parachute opening method. After the parachute cover is opened, the parachute can fall and open due to its own gravity, eliminating the need for parachute guns, parachute barrels, etc. Components that are prone to safety hazards improve the safety of the parachute opening device and reduce the total weight of the drone; at the same time, the use of split canopy covers reduces the cover of the canopy opening after the parachute is opened. It is more conducive to the smooth detachment of the parachute from the parachute cabin, and reduces the possibility of the parachute being entangled with the body, effectively improving the success rate of parachute opening. In addition, the canopy cover is inseparable from the UAV body, which increases the reusability of the parachute opening device and reduces the use cost.

According to some embodiments, the umbrella canopy is a part of the skin 1 of the drone, and the locking mechanism 3 is arranged on the inside of the skin 1 of the drone. When the canopy is closed, the canopy is smoothly connected with the body of the drone. . Through such a setting, a smoothly connected arc is formed between the umbrella canopy and the body contour, which can ensure the aerodynamic characteristics of the drone to the greatest extent.

According to some embodiments, the parachute opening device also includes a plurality of hinged structures 2, as further shown in FIG. Hinged by one or more pin shafts 21 between them. For example, in order to improve the stability of the hinge, the number of pin shafts 21 used between each cover body and the UAV skin 1 can be two.

Further, a torsion spring is provided on the pin shaft 21 , for example, the torsion spring can be fixed in a locking groove at the pin shaft 21 . When the umbrella canopy is closed, the torsion spring produces elastic deformation; when the locking mechanism 3 is unlocked to open the canopy, the torsion spring assists the first cover 4 or the second cover 6 to unfold under the action of elastic force.

When the torsion spring at the pin shaft 21 is in a relaxed state, the angle between the torsion spring arms can be designed according to the specific shape of the fuselage. Preferably, the first cover 4 or the second cover should be guaranteed when the torsion spring is in a relaxed state. 6 forms an included angle greater than 90 degrees with the surface of the skin 1 of the drone.

In the embodiment of the present invention, through the above design, the first cover body 4 and the second cover body 6 parts are upturned when they are fully opened under the action of the torsion spring, which reduces the covering of the opening of the umbrella cabin by the umbrella cabin cover after the umbrella is opened. It is more conducive to the smooth escape of the parachute from the parachute cabin, and reduces the possibility of the parachute being entangled with the body.

According to some embodiments, with further reference to Figure 3a and Figure 3b, the first cover 4 is a segmented structure, including a first part 41, a second part 42 and a third part 43; when the first cover 4 is unfolded, the first A certain angle is formed between the component 41 and the second component 42 , and between the second component 42 and the third component 43 to generate a windward area in the direction of the relative airflow.

The structure of the second cover body 6 and the first cover body 4 is symmetrical, which can also generate a windward area.

For example, the first part 41 , the second part 42 and the third part 43 can be a triangular structure as shown in FIG. 2 and FIG. 3 b , and the three together form a rectangular first cover 4 .

Preferably, between the first part 41 and the second part 42, between the second part 42 and the third part 43 are hinged by one or more pin shafts 22; between the third part 43 and the skin 1 of the drone All one or more pin shafts 21 are hinged. For example, in order to improve the stability of the hinge, the number of pin shafts 22 used between two hinged parts can be two.

Further, a torsion spring is also arranged on the pin shaft 22 , for example, the torsion spring can be fixed in a locking groove at the pin shaft 22 . When the umbrella canopy was opened, the torsion spring at the pin shaft 22 made above-mentioned angles be formed between the first part 41 and the second part 42 and between the second part 42 and the third part 43 under the action of the elastic force, so as to relatively The direction of the airflow creates the frontal area.

The second cover body 6 also includes corresponding settings about pin shafts and torsion springs.

In the embodiment of the present invention, through the above arrangement, as shown in Fig. 3a, Fig. 3b and Fig. 4, when the canopy cover is never fully deployed to fully expanded, the canopy cover will generate a windward area in the relative airflow direction, without The air of the man-machine can produce resistance to the canopy cover during flight, so as to promote the segmented expansion of the first part 41, the second part 42 and the third part 43 of the first cover body 4 (the second cover body 6 is the same) , so that the smooth opening of the umbrella canopy can be guaranteed.

According to some embodiments, as shown in Figure 2, when the umbrella canopy is closed, only the first part 41 and the skin 1 of the drone are fixedly connected by the locking mechanism 3 to lock the first cover 4; The locking method of the cover body 6 is the same as that of the first cover body 4 . Preferably, the locking mechanism 3 includes a first locking portion and a second locking portion, the first locking portion and the second locking portion have the same structure, and are respectively used to lock one of the first cover 4 and the second cover 6 . The locking mechanism 3 can be an electronic lock, or other locking methods can be used.

The parachute opening device of the drone in the embodiment of the present invention is especially suitable for use in supersonic drones. Supersonic drones have the characteristics of small aspect ratio, small body volume, small body weight, and high maneuverability. Because of these characteristics, supersonic drones have strict restrictions on structural weight during structural design, and there is no structural margin left for structural components such as landing gear required for taxi take-off and landing, so landing gear cannot be used for landing and recovery. Due to the above limitations, supersonic UAVs generally take off with rocket boost, and generally use parachute recovery for recovery. However, the existing parachute recovery method is not safe and reliable enough, and supersonic drones are expensive, and once a flight accident occurs, it will cause greater losses. Therefore, the safety of the parachute opening device can be significantly improved by adopting the parachute opening device of the unmanned aerial vehicle provided by the present invention, and the occurrence of accidents can be avoided.

The specific embodiments described above have further described the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention, and are not intended to limit the present invention. Within the spirit and principles of the present invention, any modifications, equivalent replacements, improvements, etc., shall be included in the protection scope of the present invention.

Claims (8)

1. a kind of parachute opener of unmanned plane characterized by comprising

Umbrella cabin is located at unmanned plane internal body, and for accommodating parachute, the umbrella cabin is provided with out in the bottom of unmanned plane body Mouthful；

Umbrella hatchcover, including the first lid and the second lid, when the umbrella hatchcover is closed, first lid and the second lid are mutual Fitting is to cover the opening, and when the umbrella hatchcover is opened, first lid and the second lid are separated from each other and respectively to phase Anti- two sides expansion；

Locking mechanism, for controlling opening or closing for the umbrella hatchcover.

2. parachute opener according to claim 1, which is characterized in that the umbrella hatchcover is one of the covering of unmanned plane Point, the locking mechanism is set to the inside of the covering of unmanned plane, when the umbrella hatchcover is closed, the umbrella hatchcover and unmanned plane machine Body is smoothly connected.

3. parachute opener according to claim 1, which is characterized in that first lid and the second lid are respectively in its exhibition It is hinged by one or more pin shafts between the covering of the side and unmanned plane opened, it is provided with torsional spring on the pin shaft,

When the umbrella hatchcover is closed, the torsional spring generates elastic deformation；It is described to open that the locking mechanism unlocks state When umbrella hatchcover, the torsional spring assists first lid or the second lid to be unfolded under the action of elastic force.

4. parachute opener according to claim 3, which is characterized in that the torsional spring is in relaxed state, so that described One lid or the second lid form the angle greater than 90 degree with the skin-surface of corresponding unmanned plane.

5. parachute opener according to claim 1, which is characterized in that first lid is segmentation structure, including the One component, second component and third member；When first lid is unfolded, between the first component and the second component, It is respectively formed certain angle between the second component and the third member, to generate front face area in the direction of relative wind；

Second lid and first lid are symmetrical structure.

6. parachute opener according to claim 5, which is characterized in that between the first component and the second component, Between the second component and the third member, pass through one or more between the third member and the covering of unmanned plane Pin shaft is hinged, is provided with torsional spring on the pin shaft；

When the umbrella hatchcover is closed, the torsional spring generates elastic deformation；It is described to open that the locking mechanism unlocks state When umbrella hatchcover, the torsional spring assists first lid to be unfolded under the action of elastic force, and make the first component with it is described Certain angle is respectively formed between second component, between the second component and the third member；

Second lid and first lid are symmetrical structure.

7. parachute opener according to claim 5 or 6, which is characterized in that when the umbrella hatchcover is closed, the first component It is connected between the covering of unmanned plane by the locking mechanism, to lock first lid；The locking of second lid Mode is identical as first lid.

8. parachute opener according to claim 7, which is characterized in that the locking mechanism includes the first sticking department and second Sticking department, first sticking department and the second sticking department structure are identical, are respectively used to lock first lid and the second lid In one.