Closing parachute and flight device

Abstract

The invention discloses a convergent parachute and a flight device, and relates to the technical field of parachutes, the convergent parachute comprises a supporting piece, a canopy and a retracting and releasing assembly, the center of the canopy is connected with one end of the supporting piece, the retracting and releasing assembly comprises a main rope and a plurality of branch ropes, the main rope is slidably arranged on the supporting piece, one end of the main rope is connected to one ends of the branch ropes, and the other end of the main rope is connected to the other end of the branch ropes. The other ends of the branch ropes are connected around the peripheral side of the canopy, and the branch ropes can pull the canopy to be folded and unfolded when the main rope slides back and forth relative to the supporting piece. The convergent parachute can be installed in a parachute cabin of the aircraft, when the aircraft needs to land, the main rope can be controlled to slide away from the parachute canopy relative to the supporting piece so as to pull the branch ropes to be folded, the branch ropes pull the parachute canopy to be folded to a small wind receiving area, at the moment, due to the fact that the parachute is not completely unfolded, the borne air resistance is small, and the parachute can not fall off. The joint of the parachute and the aircraft bears small acting force and is not prone to being snapped.

Description

Technical Field

[0001] The present invention relates to the technical field of parachutes, and in particular to a closed parachute and a flying device. Background Art

[0002] When an aircraft such as a drone makes an emergency landing, it usually needs the help of a parachute to cushion the landing so that the aircraft can land safely.

[0003] The prior art with the announcement number CN220349940U discloses a parachute ejection device for a drone and a drone, which solves the technical problem that the parachute rope is easily entangled with the wings of the drone, resulting in the drone being unable to land safely. The device includes a mounting frame and an anti-entanglement ring arranged on the drone; a ejection tube is arranged inside the mounting frame, a parachute is arranged inside the ejection tube, and the parachute is fixedly connected to the ejection tube through the rope; the anti-entanglement ring is fixedly connected to the mounting frame to prevent the parachute rope from entangled with the wings of the drone.

[0004] However, the existing drone still has defects. For example, the flight speed of the drone is usually very high. After the parachute shooting device brings the parachute out of the drone, the parachute instantly opens to the maximum opening area under the action of the air, causing the connection between the parachute and the drone to be instantly subjected to a large pulling force. The connection is easily broken, and there is a great safety hazard in the landing of the drone. Summary of the invention

[0005] The purpose of the present invention is to overcome the above-mentioned technical deficiencies and to propose a closed parachute and a flying device, so as to solve the technical problem in the prior art that after the parachute is brought out of the drone by the parachute shooting device of the drone, the parachute is instantly opened to the maximum opening area under the action of the air, causing the connection between the parachute and the drone to be instantly subjected to a large tensile force, the connection is easily broken, and there is a great safety hazard in the landing of the drone.

[0006] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: In a first aspect, the present invention provides a closed parachute, comprising: Supports; An umbrella canopy, the center of which is connected to one end of the support member; and The retracting and deploying assembly includes a main rope and multiple branch ropes, wherein the main rope is slidably arranged on the support member, one end of the multiple branch ropes is connected to one end of the main rope, and the other ends of the multiple branch ropes are connected around the circumference of the canopy, and the multiple branch ropes can pull the canopy to be retracted and deployed when the main rope slides back and forth relative to the support member.

[0007] In some embodiments, the retractable assembly also includes a slide cylinder, which is slidably mounted on the support member, the circumference of the slide cylinder is evenly connected to multiple branch ropes, and the slide cylinder is connected to the main rope and can slide back and forth along the support member under the traction of the main rope.

[0008] In some embodiments, the slide cylinder is provided with a latch hole, and the retractable assembly further comprises a trigger member, which is movably connected to the support member and can be engaged with or separated from the latch hole to lock or unlock the slide cylinder.

[0009] In some embodiments, the trigger member includes a hook and a return spring, one end of the return spring is connected to the support member, and the other end of the return spring is connected to the hook. The slide cylinder can press the hook when sliding, so that the hook drives the return spring to accumulate elastic force, and the return spring can release the elastic force to drive the hook to engage with the hole when the hook is aligned with the hole of the slide cylinder.

[0010] In some embodiments, an active cavity is provided in the support member, and a plurality of slide grooves are opened on the circumferential side of the support member. A plurality of branch ropes are correspondingly arranged in the plurality of slide grooves. The plurality of branch ropes converge in the active cavity and are connected to the main rope, and can reciprocate along their respective slide grooves under the pulling of the main rope.

[0011] In some embodiments, the retracting and deploying assembly further comprises a plurality of auxiliary ropes, one ends of the plurality of auxiliary ropes converge and connect to the main rope, and the other ends of the plurality of auxiliary ropes are connected around the circumferential edge of the canopy.

[0012] In a second aspect, the present invention also provides a flying device, comprising an aircraft, a control component and the above-mentioned folded parachute, wherein the aircraft is provided with a parachute compartment, the control component and the folded parachute are both located in the parachute compartment, the control component is connected to a main rope of the folded parachute, and can pull the main rope when the folded parachute is detached from the parachute compartment to control the degree of opening of the canopy.

[0013] In some embodiments, the control component includes a motor and a rope drum, the main rope is wound around the rope drum, and the motor is connected to the rope drum and is used to drive the rope drum to rotate to retract and release the main rope.

[0014] In some embodiments, the flying device further comprises a cutting member, which is movably connected to the flying device and is capable of cutting the main rope when moving.

[0015] In some embodiments, the flying device also includes a speed sensor and a main controller provided on the aircraft, the speed sensor and the cutting piece are both connected to the main controller, the speed sensor can send a control signal to the main controller when sensing that the aircraft slows down to below a preset speed, and the main controller can control the cutting piece to cut the main rope when receiving the control signal.

[0016] Compared with the prior art, the closed-end parachute provided by the present invention can be used to be installed in the parachute cabin of an aircraft. When the aircraft needs to land, the main rope can be controlled to slide away from the canopy relative to the support to pull multiple branch ropes to close. The multiple branch ropes pull the canopy to close to a smaller wind-receiving area. At this time, since the parachute is not fully opened, the air resistance is small, and the force applied to the connection between the parachute and the aircraft is small, and it is not easy to be broken. Later, the main rope can be controlled to gradually slide toward the canopy. Under the action of the airflow, the multiple branch ropes gradually open the canopy to apply the maximum buffer to the aircraft and accelerate the landing efficiency of the aircraft. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of a closed parachute provided by an embodiment of the present invention when it is fully opened; Figure 2 It is a schematic structural diagram of a closed parachute provided by an embodiment of the present invention when it is half-opened; Figure 3 is a schematic structural diagram of the connection between the support member and the retractable assembly according to an embodiment of the present invention; Figure 4 is a schematic structural diagram of a support member according to another embodiment of the present invention; Figure 5 It is a schematic diagram of the structure of a flying device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0019] In order to solve the technical problem in the prior art that after the parachute is taken out of the drone by the parachute shooting device of the drone, the parachute is instantly opened to the maximum opening area under the action of air, resulting in a large tensile force instantly being applied to the connection between the parachute and the drone, the connection is easily broken, and there is a great safety hazard in the landing of the drone, the present invention provides a closed parachute, which can realize autonomous control of the opening degree of the parachute, so as to avoid the parachute being fully opened at the moment of release, resulting in a large tensile force instantly being applied to the connection between the parachute and the drone.

[0020] It should be noted that the closed-end parachute described in the present invention is used for but not limited to aircraft such as drones. For the sake of convenience, in the present invention, only the closed-end parachute applied to drones is used as an example for explanation, and the principle of applying the closed-end parachute to other types of equipment is essentially the same as that applied to drones, and will not be described in detail here.

[0021] See also Figure 1 and Figure 2 , Figure 1 It is a structural schematic diagram of a folded parachute 100 in one embodiment of the present invention. The folded parachute 100 includes a support 1, a canopy 2 and a folding and releasing assembly 3. The canopy 2 is roughly circular in shape when laid flat. The center of the canopy 2 is connected to one end of the support 1, and the other end of the support 1 can be connected to a drone, so that the folded parachute 100 is connected to the drone.

[0022] The retractable assembly 3 includes a main rope 31 and a plurality of branch ropes 32. The main rope 31 is slidably arranged on the support 1. One end of the main rope 31 is connected to one end of the plurality of branch ropes 32. It can be understood that one end of the plurality of branch ropes 32 converges and is connected to the main rope 31. The main rope 31 can be directly connected to the main rope 31 or indirectly connected to the main rope 31 through other components. The other ends of the plurality of branch ropes 32 are connected around the circumference of the canopy 2. The branch ropes 32 are specifically connected to the portion between the center and the edge of the canopy 2. The plurality of branch ropes 32 can pull the canopy 2 to be retracted and released when the main rope 31 slides back and forth relative to the support 1, thereby controlling the opening degree of the canopy 2. The greater the opening degree of the canopy 2, the greater its wind-receiving area, and the greater the air resistance it encounters, and vice versa. In the initial stage of the release of the parachute, the canopy 2 can be controlled to be in a semi-open state by the main rope 31. At this time, the canopy 2 is subjected to less air resistance, and the force acting on the connection between the support 1 and the drone is less, so the support 1 is not easily broken and separated from the drone. In the subsequent stage, the canopy 2 is gradually opened by controlling the main rope 31 until the canopy 2 is fully opened. At this time, the closed parachute can play the greatest buffering role on the drone to improve the landing efficiency of the drone. It should be emphasized that the closed parachute can have a certain buffering effect on the drone when it is in a semi-open state. The speed of the drone has dropped a lot. When the parachute is fully opened, the speed of the drone is low, so the force at the connection between the support member 1 and the drone is not large, which can protect the connection.

[0023] The magnitude of the air resistance Q on the parachute can be calculated using the following formula:

[0024] in, represents the air resistance coefficient, which can be regarded as a constant; ρ represents the air density, which can also be regarded as a constant; Represents the windward area of ​​the canopy; VZ Represents the speed of the parachute.

[0025] It can be seen that the air resistance of the parachute is mainly determined by the speed of the parachute and the opening area of ​​the canopy. The air resistance Q received by the parachute can also be understood as the tension on the connection between the support and the drone. The parachute is installed on the drone. When the parachute is just released, the speed of the parachute and the drone is relatively high. At this time, if the parachute is fully opened directly, then At its maximum value, V Z The support member 1 is also relatively large, so the parachute is subject to large air resistance, and the tension at the connection between the support member 1 and the drone is large, which can easily break the support member 1. Therefore, the parachute cannot be fully opened directly when it is just released. The present application controls the canopy 2 to be in a semi-open state by pulling multiple branch ropes 32 through the main rope 31, so that the tension at the connection between the support member 1 and the drone is relatively small. In this process, after the speed of the drone and the parachute has slowed down, the canopy 2 is fully opened, and the tension at the connection between the support member 1 and the drone can be kept small all the time, thereby effectively protecting the support member 1.

[0026] In one embodiment, see Figure 3 The retracting and unretracting assembly 3 further includes a slide 33, which is slidably sleeved on the support member 1, and the circumferential side of the slide 33 is evenly connected to multiple branch ropes 32, and the slide 33 is connected to the main rope 31 and can slide back and forth along the support member 1 under the pulling of the main rope 31. In this embodiment, the multiple branch ropes 32 are indirectly connected to the main rope 31 through the slide 33, and the main rope 31 drives the multiple branch ropes 32 to move by driving the slide 33 to slide back and forth along the support member 1, thereby driving the canopy 2 to shrink through the multiple branch ropes 32.

[0027] In one embodiment, see Figure 3 , the slide 33 is provided with a locking hole 331, and the retracting assembly 3 also includes a trigger 34, which is movably connected to the support 1 and can be engaged or separated from the locking hole 331 to lock or unlock the slide 33. In this embodiment, the trigger 34 is arranged near the end of the support 1. When the trigger 34 engages with the locking hole 331 to lock the slide 33, the slide 33 drives the multiple branch ropes 32 to pull the canopy 2 in a semi-open state. When the parachute is stored in the parachute cabin of the drone, the trigger 34 is engaged with the slide 33, and the parachute is in a semi-open state by default when it is released from the cabin. After the parachute is semi-open for a certain period of time, the trigger 34 is controlled to disengage from the slide 33, the slide 33 is unlocked, and the canopy 2 is fully opened under air resistance.

[0028] In one embodiment, see Figure 3The trigger member 34 includes a hook 341 and a return spring 342. The hook 341 is connected to the support member 1 in a radially sliding manner. It can also be understood that the sliding direction of the hook 341 is perpendicular to the sliding direction of the slide 33. One end of the return spring 342 is connected to the support member 1, and the other end of the return spring 342 is connected to the hook 341. The slide 33 can press the hook 341 when sliding, so that the hook 341 drives the return spring 342 to accumulate elastic force. The return spring 342 can release elastic force when the hook 341 is aligned with the locking hole 331 of the slide 33 to drive the hook 341 to engage with the locking hole 331. In this embodiment, the hook 341 has a guide slope 343. When the slide 33 slides, it can press the guide slope 343 to drive the hook 341 to move. When the hook 341 moves, it can drive the return spring 342 to deform to accumulate elastic force. When the locking hole 331 of the slide tube 33 corresponds to the position of the locking hook 341, the return spring 342 releases the elastic force to drive the locking hook 341 to engage with the locking hole 331, so as to lock the slide tube 33 and drive the umbrella canopy 2 to be locked in a semi-open state.

[0029] In one embodiment, see Figure 4 , an active cavity 11 is provided in the support member 1, and a plurality of chutes 12 are provided on the peripheral side of the support member 1, and the plurality of chutes 12 are all connected to the active cavity 11. A plurality of branch ropes 32 are correspondingly provided in the plurality of chutes 12, and the plurality of branch ropes 32 converge and connect to the main rope 31 in the active cavity 11, and can reciprocate along their respective chutes 12 under the pulling of the main rope 31. In this embodiment, a plurality of branch ropes 32 are directly connected to the main rope 31, and each branch rope 32 is located in a corresponding chute 12, and each chute 12 is provided for a branch rope 32 to move, and the chute 12 is mainly used to guide the branch ropes 32, so that each branch rope 32 can stably reciprocate in the corresponding chute 12, so as to stably retract and unfold the canopy 2. Compared with the previous embodiment, this embodiment does not have a slide tube 33, and directly controls the retraction and unfolding of the canopy 2 by pulling the main rope 31.

[0030] The main rope 31 of this embodiment can be wound around a rope drum (not shown in the figure), and the rope drum is connected to a motor. The motor drives the rope drum to rotate forward or reverse to control the rope drum to retract and release the main rope 31, thereby controlling the retraction and release of the umbrella canopy 2.

[0031] In one embodiment, see Figure 1The retracting and unfolding assembly 3 further includes a plurality of auxiliary ropes 35, one end of which converges and connects to the main rope 31, and the other end of which is connected around the peripheral edge of the canopy 2. In this embodiment, by providing a plurality of auxiliary ropes 35, the canopy 2 can be assisted in being retracted and unfolded. During the movement of the main rope 31, the auxiliary ropes 35 and the branch ropes 32 can be driven to move at the same time, so that the auxiliary ropes 35 and the branch ropes 32 can simultaneously control the retracting and unfolding of the canopy 2. The canopy 2 is not easily deformed when buffered by the airflow, and can be used stably.

[0032] The support member 1 can also be configured as a retractable structure so that the support member 1 can be stored with the parachute in a limited space parachute compartment. In addition, the support member 1 is rotatably connected to the aircraft via a rotating shaft so that the parachute has a certain degree of freedom after being released through the rotation of the support member 1.

[0033] See also Figure 5 The present invention further provides a flying device 200, comprising an aircraft 4, a control assembly (not shown in the figure) and the above-mentioned closed parachute 100, wherein the aircraft 4 is provided with a parachute compartment 41, which is covered by a hatch, and when the parachute needs to be released, the hatch is controlled to separate from the parachute compartment 31. The control assembly and the closed parachute 100 are both located in the parachute compartment 41, and the control assembly is connected to the main rope 31 of the closed parachute 100, and can pull the main rope 31 when the closed parachute 100 is separated from the parachute compartment 41, so as to control the opening degree of the canopy 2.

[0034] In one embodiment, the control component includes a motor and a rope drum (not shown in the figure), the main rope 31 is wound around the rope drum, the motor is connected to the rope drum and is used to drive the rope drum to rotate to retract and release the main rope 31, thereby controlling the retraction and extension of the canopy 2.

[0035] In one embodiment, see Figure 2 The flying device further includes a cutting member (not shown in the figure), which is movably connected to the aircraft 4 and can cut the main rope 31 when in motion. Compared with the previous embodiment, this embodiment does not need to be provided with a motor and a rope drum, and the length of the main rope 31 is only set to just be able to pull the canopy 2, so that the canopy 2 is in a semi-open state. When the speed of the aircraft 4 is reduced, the cutting member is controlled to cut the main rope 31, and the multiple branch ropes 32 can be completely released. Under the action of the airflow, the canopy 2 can be fully opened. The main rope 31 does not play any role after being cut off, and is only used to limit the canopy 2 from being fully opened in advance.

[0036] In one embodiment, see Figure 2The flying device 200 further includes a speed sensor and a main controller provided on the aircraft 4. The speed sensor and the cutting piece are both connected to the main controller. When the speed sensor senses that the aircraft has decelerated to a speed lower than a preset speed, the main controller can send a control signal to the main controller. When the main controller receives the control signal, the cutting piece can control the cutting piece to cut the main rope 31. By providing the speed sensor and the main controller, the release of the parachute is more intelligent in this embodiment.

[0037] In order to better understand the present invention, the following Figures 1 to 5 The technical solution of the present invention is described in detail: The closed parachute 100 provided by the present invention can be installed in the parachute compartment 41 of the aircraft 4. When the aircraft 4 needs to land, the closed parachute 100 stored in the parachute compartment 41 is in a semi-open state, that is, the main rope 31 pulls the multiple branch ropes 32 to close, and the multiple branch ropes 32 pull the canopy 2 to close to a smaller windward area. At this time, the parachute is not fully opened. When the closed parachute 100 is released to detach from the parachute compartment 41, the closed parachute 100 is subjected to less air resistance, and the force applied to the connection between the closed parachute 100 and the aircraft 4 is less, and it is not easy to be broken. Later, the main rope 31 can be controlled to gradually slide toward the canopy 2 or the main rope 31 can be directly cut off. Under the action of the airflow, the multiple branch ropes 32 gradually open the canopy 2 to the maximum windward area to apply the maximum buffer to the aircraft 4 and accelerate the landing efficiency of the aircraft 4.

[0038] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A closed parachute, characterized in that: include: Supports; An umbrella canopy, the center of which is connected to one end of the support member; and The retracting and deploying assembly includes a main rope and multiple branch ropes, wherein the main rope is slidably arranged on the support member, one end of the multiple branch ropes is connected to one end of the main rope, and the other ends of the multiple branch ropes are connected around the circumference of the canopy, and the multiple branch ropes can pull the canopy to be retracted and deployed when the main rope slides back and forth relative to the support member.

2. The closed parachute according to claim 1, characterized in that: The retractable assembly also includes a slide cylinder, which is slidably sleeved on the support member, and the circumference of the slide cylinder is evenly connected to the plurality of branch ropes. The slide cylinder is connected to the main rope and can slide back and forth along the support member under the pulling of the main rope.

3. The closed-end parachute according to claim 2, characterized in that: The slide cylinder is provided with a locking hole, and the retractable assembly further comprises a trigger member, which is movably connected to the support member and can be engaged with or separated from the locking hole to lock or unlock the slide cylinder.

4. The closed-end parachute according to claim 3, characterized in that: The trigger member includes a hook and a return spring, the hook is slidably connected to the support member, one end of the return spring is connected to the support member, and the other end of the return spring is connected to the hook, the slide cylinder can press the hook when sliding, so that the hook drives the return spring to accumulate elastic force, and the return spring can release the elastic force when the hook is aligned with the latching hole of the slide cylinder to drive the hook to be engaged with the latching hole.

5. The closed parachute according to claim 1, characterized in that: An active cavity is provided in the support member, and a plurality of slide grooves are opened on the circumferential side of the support member. A plurality of branch ropes are correspondingly provided in the plurality of slide grooves. The plurality of branch ropes converge in the active cavity and are connected to the main rope, and can reciprocate along their respective slide grooves under the pulling of the main rope.

6. The closed-end parachute according to claim 1, characterized in that: The retractable and deployable assembly also includes a plurality of auxiliary ropes, one ends of the plurality of auxiliary ropes converge and connect to the main rope, and the other ends of the plurality of auxiliary ropes are connected around the circumferential edge of the canopy.

7. A flying device, characterized in that: It comprises an aircraft, a control component and a closed parachute as described in any one of claims 1 to 6, wherein the aircraft is provided with a parachute compartment, the control component and the closed parachute are both located in the parachute compartment, the control component is connected to a main rope of the closed parachute, and can pull the main rope when the closed parachute is separated from the parachute compartment to control the opening degree of the canopy.

8. The flying device according to claim 7, characterized in that: The control assembly comprises a motor and a rope drum, the main rope is wound around the rope drum, and the motor is connected to the rope drum and is used to drive the rope drum to rotate so as to retract and release the main rope.

9. The flying device according to claim 7, characterized in that: The flying device further comprises a cutting piece, which is movably connected to the flying device and can cut the main rope when moving.

10. The flying device according to claim 9, characterized in that: The flying device also includes a speed sensor and a main controller arranged on the aircraft. The speed sensor and the cutting piece are both connected to the main controller. When the speed sensor senses that the aircraft has decelerated to a speed lower than a preset speed, it can send a control signal to the main controller. When the main controller receives the control signal, it can control the cutting piece to cut the main rope.

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