Parachute release device and control method thereof

Abstract

The present invention relates to a parachute removing device and a control method thereof, which belongs to the field of parachute removing devices, and comprises: a shell, a connecting column, a clamping assembly, an electric control board, a releasing member, a water entry detector and an acceleration sensor, wherein a parachute is arranged on the shell. The two ends of the connecting column are respectively a first end and a second end, the first end is detachably plugged into the shell, and the second end is used to connect to a load. The clamping assembly is arranged in the shell, and the clamping assembly is used to connect to the connecting column. The electric control board is arranged in the shell. The releasing member is used to drive the clamping assembly to disengage from the connecting column; the releasing member is electrically connected to the electric control board. The water entry detector is electrically connected to the electric control board; the acceleration sensor is electrically connected to the electric control board. When the water entry detector and the acceleration sensor send electrical signals to the electric control board, when a preset condition is reached, the electric control board sends an electrical signal to the releasing member, so that the releasing member drives the clamping assembly to disengage from the connecting column, so that the connecting column is separated from the shell, so that the load on the connecting column is separated from the parachute on the shell.

Description

Technical Field

[0001] The invention belongs to the technical field of parachute removing devices, and in particular relates to a parachute removing device and a control method thereof. Background Art

[0002] With the development of aircraft, the frequency of airdrop applications is increasing, especially in war, rescue and other scenarios. It mainly connects the load through a parachute, drops the load at high altitude, and reduces the falling speed of the load through the parachute to avoid damage to the load. In actual practice, it is often necessary to airdrop loads on the water surface. In the prior art, a parachute release device is usually provided between the load and the parachute. When the airdrop load is deployed from the aircraft, the parachute is connected to the airdrop load through the parachute release device, and the speed of the airdrop load entering the water is reduced by the resistance of the parachute; when the airdrop load enters the water, the parachute release device needs to act quickly to separate the parachute from the airdrop load, so as to realize the normal working process after the airdrop load enters the water.

[0003] In the prior art, the more commonly used parachute release devices mostly adopt the inertial separation principle, that is, when the airdropped load enters the water, the acceleration generated by the water impact triggers the movement of the inertial block, releases the constraint between the parachute and the airdropped load, and achieves separation. However, it has certain requirements for the water impact. If the impact is too small, the parachute cannot be released normally, but if the impact is too large, the airdropped load will be damaged. In addition, the airdropped load will generate two impact accelerations in the same direction from being dropped to entering the water: the first is when the parachute is just opened, and the second is the water impact. Since the two impact accelerations are in the same direction, it is very easy to cause false triggering. Summary of the invention

[0004] In view of the shortcomings existing in the related art, the present invention provides a parachute stripping device and a control method thereof, which simultaneously senses through a water entry detector and an acceleration sensor to ensure that the release member can use a snap-on assembly to separate the connecting column from the shell at an appropriate time, thereby achieving separation of the load and the parachute, so as to solve the technical problem of false triggering of the parachute stripping device existing in the prior art.

[0005] The present invention provides a parachute removing device, comprising:

[0006] A shell, on which a parachute is arranged;

[0007] A connecting column, wherein the two ends of the connecting column are respectively a first end and a second end, the first end is detachably plugged into the housing, and the second end is used to be connected to a load;

[0008] A clamping assembly, the clamping assembly is disposed on the housing, and the clamping assembly is used to be connected to the connecting column;

[0009] An electric control board, the electric control board is arranged in the housing;

[0010] A release member, the release member is used to drive the clamping assembly to disengage from the connecting column; the release member is electrically connected to the electric control board;

[0011] A water ingress detector, the water ingress detector being electrically connected to the electric control board;

[0012] An acceleration sensor is electrically connected to the electric control board.

[0013] In the technical solution, when the water entry detector and the acceleration sensor send electrical signals to the electronic control board, when the preset conditions are met, the electronic control board sends an electrical signal to the release member, so that the release member drives the clamping assembly to disengage from the connecting column, so that the connecting column is separated from the shell, so that the load on the connecting column is separated from the parachute on the shell.

[0014] In some embodiments, the clamping assembly includes a clamping bead and a sleeve; a sleeve is provided on the housing; the first end of the connecting column is used to be plugged into the sleeve;

[0015] A slot is formed on the peripheral wall of the connecting column; the inner wall of the slot is in the form of an arc surface;

[0016] A through hole is formed on the peripheral wall of the sleeve, and the card bead slides in the through hole;

[0017] The shaft sleeve is sleeved and slid on the sleeve, and when the inner peripheral wall of the sleeve abuts against the clamping bead, part of the clamping bead is located in the clamping groove;

[0018] The release member is used to drive the shaft sleeve to slide along the length direction of the sleeve.

[0019] In the technical solution, when the inner peripheral wall of the sleeve abuts against the bead and the bead is partially engaged with the slot, the connecting column is connected to the shell. When the load needs to be separated from the parachute, the release member drives the sleeve to slide on the sleeve to separate the sleeve from the bead. Under the action of gravity, the connecting column moves downward. Because the inner wall of the slot is an arc surface, it pushes the bead to slide in the through hole, so that the bead is separated from the slot, the connecting column loses its limit, and the connecting column is separated from the sleeve and the shell, so that the load is separated from the parachute.

[0020] In some embodiments, a plurality of through holes are arranged at intervals along the circumference of the sleeve, and a plurality of the beads are arranged in one-to-one correspondence with the through holes;

[0021] The clamping groove is arranged in the form of an annular groove along the circumference of the connecting column.

[0022] In the technical solution, a plurality of snap beads are used to snap into engagement with the snap slots, thereby further improving the connection strength between the connecting column and the shell.

[0023] In some embodiments, the release member is an electromagnet, and the electromagnet is located on either side of the sleeve.

[0024] In the technical solution, the electric control board controls the electromagnet to start, and the electromagnet absorbs the sleeve to enable the sleeve to slide on the sleeve, thereby enabling the clamping assembly to release the connecting column.

[0025] In some embodiments, an annular accommodating cavity is provided on the inner wall of the sleeve away from the electromagnet; the accommodating cavity is used to accommodate part of the card bead; when the card bead part is located in the accommodating cavity, the card bead is disengaged from the card slot.

[0026] In the technical solution, when the electromagnet is started, the sleeve moves and approaches the electromagnet, the card bead is separated from the card slot, and part of the card bead can enter the accommodating cavity to ensure that the card bead can be separated from the card slot and the connecting column can be stably separated from the sleeve and the shell.

[0027] In some embodiments, one end of the sleeve away from the connecting column is plugged and detachably connected with a parachute connecting piece, and the parachute connecting piece is used to be connected to the parachute.

[0028] In the technical solution, the parachute and the payload can be separated by separating the connecting column from the sleeve.

[0029] In some embodiments, an elastic member is disposed in the sleeve, the elastic member is located between the connecting column and the parachute connecting member, and the elastic member is used to push the connecting column away from the parachute connecting member.

[0030] In the technical solution, when the card bead is separated from the card slot, the elastic part pushes the connecting column away from the parachute connecting part, further ensuring that the connecting column can be separated from the sleeve and the shell, thereby smoothly separating the load from the parachute.

[0031] In addition, the present application also provides a control method for an umbrella-dropping device, wherein when the release member receives an electrical signal, the release member is controlled to start so that the clamping assembly is disengaged from the connecting column;

[0032] After the acceleration sensor detects weightlessness, the electric control board sends an electrical signal to the release member after waiting for a set time;

[0033] Alternatively, after the acceleration sensor detects weightlessness, the first impact and the second impact in sequence, the electric control board sends an electrical signal to the release member.

[0034] In the technical solution, the payload and the parachute can be separated by waiting for a set time after being dropped; or the payload and the parachute can be separated at the second impact of entering the water. Multiple solutions are provided to avoid the situation where the separation time of the parachute and the payload does not meet the requirements due to false triggering.

[0035] In some embodiments, when the water ingress detector detects water, the electric control board sends an electrical signal to the release member.

[0036] In the technical solution, the load is separated from the parachute after the load enters the water, and a variety of solutions for separating the load from the parachute are provided.

[0037] In some of the embodiments, a barometer is also provided on the shell; when the acceleration sensor detects weightlessness, the air pressure value is continuously detected by the barometer, and when the air pressure value is lower than a preset value, the electric control board sends an electrical signal to the release member.

[0038] In the technical solution, the current altitude can be determined by the air pressure value. When the payload reaches a preset altitude, the payload is separated from the parachute, providing a variety of solutions for separating the payload from the parachute.

[0039] Based on the above technical solution, in an embodiment of the present invention, a water entry detector and an acceleration sensor are used for simultaneous sensing to ensure that the release member can use the snap-on assembly to separate the connecting column from the shell at the appropriate time, thereby achieving separation of the load from the parachute, so as to solve the technical problem of false triggering of the parachute release device existing in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0041] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the parachute removing device of the present invention;

[0042] Figure 2 It is a schematic diagram of the overall structure of an embodiment of the parachute removing device of the present invention;

[0043] Figure 3 A cross-sectional view of an embodiment of the parachute removing device of the present invention;

[0044] Figure 4 A cross-sectional view of an embodiment of the parachute removing device of the present invention;

[0045] Figure 5 A cross-sectional view of an embodiment of the parachute removing device of the present invention;

[0046] Figure 6 An exploded view of an embodiment of a parachute removing device of the present invention;

[0047] Figure 7 An exploded view of an embodiment of a parachute removing device of the present invention;

[0048] Figure 8It is a flow chart of the control method of the parachute releasing device of the present invention;

[0049] Fig. 9 The figure is a flow chart of the control method of the parachute releasing device of the present invention.

[0050] In the figure:

[0051] 100, shell; 101, outer shell; 102, cover plate; 103, seal; 104, support ring; 200, sleeve; 201, through hole; 202, connecting rod; 203, mounting ring; 300, connecting column; 301, slot; 400, card bead; 500, bushing; 600, release member; 700, umbrella member; 701, threaded column; 702, connecting ring; 800, electronic control board; 900, water ingress detector; 110, acceleration sensor; 120, battery; 130, elastic member. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0053] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0054] The terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Thus, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features.

[0055] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0056] Please refer to all the accompanying drawings. In an illustrative embodiment of the parachute releasing device of the present invention, the parachute releasing device includes: a shell 100, a connecting column 300, a clamping assembly, an electric control board 800, a release member 600, a water entry detector 900 and an acceleration sensor 110, wherein the shell 100 is used to set a parachute.

[0057] The two ends of the connecting column 300 are respectively a first end and a second end, the first end is detachably plugged into the housing 100, and the second end is used to connect to the load. The clamping assembly is disposed on the housing 100, and the clamping assembly is used to connect to the connecting column 300.

[0058] The electric control board 800 is disposed in the housing 100. The release member 600 is used to drive the clamping assembly to disengage from the connecting column 300; the release member 600 is electrically connected to the electric control board 800. The water ingress detector 900 is electrically connected to the electric control board 800; and the acceleration sensor 110 is electrically connected to the electric control board 800.

[0059] Through the above scheme, when the water entry detector 900 and the acceleration sensor 110 send electrical signals to the electronic control board 800, when the preset conditions are met, the electronic control board 800 sends an electrical signal to the release member 600, so that the release member 600 drives the clamping assembly to disengage from the connecting column 300, so that the connecting column 300 is separated from the shell 100, so that the load on the connecting column 300 is separated from the parachute on the shell 100.

[0060] In one embodiment, the housing 100 is disc-shaped and includes an outer shell 101 and a cover plate 102 . The outer shell 101 is disc-shaped and has an opening at one axial end. The cover plate 102 is used to close the opening of the outer shell 101 .

[0061] Furthermore, a seal 103 is provided between the cover plate 102 and the housing 101, and the seal 103 includes but is not limited to a sealing ring and a sealing gasket. The seal 103 improves the sealing between the cover plate 102 and the housing 101 to ensure that the electric control board 800 and other structures in the housing 100 will not be damaged by the water flow after entering the water, and can be reused to save costs. It is worth noting that the water intrusion detector 900 can contact the outside.

[0062] In some embodiments, a container is disposed at the second end of the connecting column 300, and the container is used to store materials and other loads.

[0063] In some embodiments, the cover plate 102 is connected to the housing 101 by bolts, and the bolts penetrate the cover plate 102 and the seal 103 and are threadedly connected to the housing 101. In other embodiments, the connection between the cover plate 102 and the housing 101 includes but is not limited to screws, buckles, snaps, slots, welding, etc.

[0064] In one embodiment, the clamping assembly includes a clamping bead 400 and a sleeve 500; a sleeve 200 is provided on the housing 100; the first end of the connecting column 300 is used to be inserted into the sleeve 200; a clamping groove 301 is provided on the peripheral wall of the connecting column 300; the inner wall of the clamping groove 301 is provided in an arc surface; a through hole 201 is penetrated through the peripheral wall of the sleeve 200, and the clamping bead 400 slides in the through hole 201; the sleeve 500 is sleeved and slid on the sleeve 200, and when the inner peripheral wall of the sleeve 200 abuts against the clamping bead 400, part of the clamping bead 400 is located in the clamping groove 301; the release member 600 is used to drive the sleeve 500 to slide along the length direction of the sleeve 200. Through the above scheme, when the inner peripheral wall of the sleeve 500 abuts against the clamping bead 400 and the clamping bead 400 is partially clamped in the clamping groove 301, the connecting column 300 is connected to the housing 100. When the load needs to be separated from the parachute, the release member 600 drives the sleeve 500 to slide on the sleeve 200 to separate the sleeve 500 from the contact with the bead 400. Under the action of gravity, the connecting column 300 moves downward. Since the inner wall of the slot 301 is an arc, it pushes the bead 400 to slide in the through hole 201 to separate the bead 400 from the slot 301. The connecting column 300 loses its limit and separates from the sleeve 200 and the shell 100, thereby achieving the separation of the load from the parachute.

[0065] Furthermore, the through hole 201 is configured as a shrinkage hole on the side facing the inner wall of the sleeve 200 to prevent the bead 400 from escaping from the side of the through hole 201 facing the inside of the sleeve 200. The bead 400 is made of steel and has high structural strength.

[0066] Furthermore, a plurality of through holes 201 are arranged at intervals along the circumference of the sleeve 200, and a plurality of clamping beads 400 are arranged in one-to-one correspondence with the through holes 201; the clamping groove 301 is arranged in an annular groove along the circumference of the connecting column 300. The plurality of clamping beads 400 are used to clamp with the clamping groove 301, further improving the connection strength between the connecting column 300 and the housing 100.

[0067] Please refer to all the drawings. In one embodiment, the shell 100 is in the shape of a ring, and the cover plate 102 and the sealing gasket are also in the shape of a ring. The cover plate 102 closes the shell 101 to form a ring-shaped closed cavity. The electric control board 800 and the acceleration sensor 110 are both arranged in the closed cavity. The sleeve 200 is arranged in the middle of the ring of the shell 100. After the parachute removal device falls into the water, part of the water flow will flow through the sleeve 200 and the through hole 201 on the sleeve 200. In this solution, the electric control board 800, the water entry detector 900 and the acceleration sensor 110 are separated from the sleeve 200 to ensure that sensitive components such as the electric control board 800, the water entry detector 900 and the acceleration sensor 110 will not be eroded by the water flow under any circumstances, thereby improving the stability of the structure.

[0068] In one embodiment, a barometer is further disposed in the housing 100 .

[0069] In one embodiment, an inner peripheral wall of the housing 101 close to the load end is provided with an annular support ring 104. The connection method between the support ring 104 and the housing 101 includes but is not limited to integral molding, welding, bolt connection, etc.

[0070] The parachute release device also includes a mounting ring 203, which is coaxially located in the middle of the annular housing 101, and is used to be placed above the support ring 104. A connecting rod 202 is provided on the outer peripheral wall of the end of the sleeve 200 close to the load, and the connecting rod 202 is connected to the support ring 104. The connection method of the sleeve 200, the connecting rod 202 and the mounting ring 203 includes but is not limited to an integral molding setting and welding to achieve an integral setting of the sleeve 200, the connecting rod 202 and the mounting ring 203. The mounting ring 203 is placed in the middle of the annular housing 101, the mounting ring 203 is fitted with the support ring 104, and the mounting ring 203 is connected to the support ring 104 to achieve the connection between the sleeve 200 and the housing 100, and the sleeve 200 is coaxially located in the middle of the annular housing 100.

[0071] In some embodiments, bolts are provided on the support ring 104, and the bolts penetrate the support ring 104 and then are threadedly connected to the mounting ring 203, so as to complete the connection between the support ring 104 and the mounting ring 203. A plurality of bolts may be provided at intervals in the circumference of the support ring 104. In addition, the connection between the support ring 104 and the mounting ring 203 may also be other detachable modes such as snap connection, buckle connection, and plug connection. When the structure at the sleeve 200 or the structure in the housing is damaged, the mounting ring 203 may be separated from the support ring 104 to separate the sleeve 200 and the housing 100 and replace them separately, thereby saving costs.

[0072] In some embodiments, the length direction of the connecting rod 202 on the sleeve 200 is arranged along the radial direction of the sleeve 200, and a plurality of connecting rods 202 are arranged at intervals around the circumference of the sleeve 200. The connection strength between the mounting ring 203 and the sleeve 200 is improved.

[0073] In some embodiments, the release member 600 is an electromagnet, which is located on either side of the sleeve 500. The sleeve 500 can be adsorbed by the electromagnet. The electric control board 800 controls the electromagnet to start, and the electromagnet adsorbs the sleeve 500 to achieve the sliding of the sleeve 500 on the sleeve 200, so as to achieve the release of the connecting column 300 by the clamping assembly.

[0074] Furthermore, the electromagnet is in a circular ring shape and is sleeved and fixedly connected to the sleeve 200 .

[0075] In some embodiments, a barometer is also disposed on the housing 100 .

[0076] In some embodiments, a battery 120 is disposed in the housing 100 , and the battery 120 is used to supply power to the electromagnet, the electric control board 800 , the acceleration sensor 110 , the water ingress detector 900 , and the barometer.

[0077] In some embodiments, a linear bearing is disposed in the middle of the annular housing 100, and the linear bearing is connected to the mounting ring 203. The sleeve 500 slides inside the linear bearing, and when the electromagnet adsorbs the sleeve 500, the sleeve 500 slides inside the linear bearing to reduce friction.

[0078] In some embodiments, the through hole 201 is opened on the side of the sleeve 200 close to the load, and the electromagnet is set on the side of the sleeve 200 away from the load. Because during the air conditioning process, the end of the sleeve 200 close to the load must face downward. If the through hole 201 is set at the end of the sleeve 200 away from the load, it is easy to cause the sleeve 500 to slip under the action of gravity, and the card bead 400 loses connection with the card slot 301, resulting in false triggering. In this solution, when the electromagnet is activated, the sleeve 500 is attracted to move upward, and the structure operates more stably.

[0079] In some embodiments, a circular accommodating cavity is provided on the inner wall of the sleeve 500 away from the electromagnet; the accommodating cavity is used to accommodate part of the card bead 400; when the card bead 400 is partially located in the accommodating cavity, the card bead 400 is separated from the card slot 301. When the electromagnet is activated, the sleeve 500 moves and approaches the electromagnet, the card bead 400 is separated from the card slot 301, and part of the card bead 400 can enter the accommodating cavity, so as to ensure that the card bead 400 can be separated from the card slot 301, and ensure that the connecting column 300 can be stably separated from the sleeve 200 and the housing 100.

[0080] In some embodiments, the end of the sleeve 200 away from the connecting column 300 is plugged and detachably connected with a parachute connecting member 700, and the parachute connecting member 700 is used to connect with the parachute. When the connecting column 300 is separated from the sleeve 200, the parachute and the payload can be separated.

[0081] In some embodiments, a shield is provided at one end of the housing 100 away from the load, and the shield is buckled with the parachute connecting member 700, and the shield and the housing 100 form a storage space, and the storage space is used to place the parachute bag. During the airdrop process, the shield falls off, the parachute opens, and the sleeve 200, the housing 100, the connecting column 300 and the load are connected through the parachute connecting member 700.

[0082] In some embodiments, the connecting member 700 includes a threaded column 701 and a connecting ring 702. A threaded section is provided on the inner peripheral wall of the end of the casing 200 away from the load. The connecting member 700 is threadedly connected to the threaded section of the casing 200 through the threaded column 701 to realize the connection between the casing 200 and the connecting member 700. When the connecting member 700 is damaged, it can be replaced separately.

[0083] In some embodiments, an elastic member 130 is provided in the sleeve 200, and the elastic member 130 is located between the connecting column 300 and the parachute connecting member 700, and the elastic member 130 is used to push the connecting column 300 away from the parachute connecting member 700. When the bead 400 is separated from the slot 301, the elastic member 130 pushes the connecting column 300 away from the parachute connecting member 700, further ensuring that the connecting column 300 can be separated from the sleeve 200 and the housing 100, and the load and the parachute are separated smoothly. In addition, in this solution, because the parachute connecting member 700 can be detached from the sleeve 200, when installing, the connecting column 300 can be inserted into the sleeve 200 first, the bead 400 is connected to the slot 301, and then the elastic member 130 is placed in the sleeve 200, and the threaded column 701 of the parachute connecting member 700 is threadedly connected to the sleeve 200 to complete the installation. If the connecting member 700 and the sleeve 200 are not detachable, the elastic member 130 needs to be placed into the sleeve 200 first, and then the elastic force of the elastic member 130 needs to be resisted when the connecting column 300 is inserted into the sleeve 200, which is inconvenient to operate.

[0084] Furthermore, the elastic member 130 is a compression spring, the axial direction of the compression spring is the same as the axial direction of the sleeve 200, and the two ends of the compression spring respectively abut against the threaded column 701 and the connecting column 300. In other embodiments, the elastic member 130 can also be a rubber block or an air bag.

[0085] In some embodiments, a debugging interface is further provided on the housing 100 , and the debugging interface is electrically connected to the electric control board 800 , and the debugging interface can be used to program or set values ​​for the electric control board 800 .

[0086] In some embodiments, a status indicator light is also provided on the housing 100, through which the current status of the parachute dismantling device can be known. In addition, because the housing 100 is sealed, the housing 100 that falls into the water can float on the water surface, and the status indicator light can also facilitate the user to find the parachute dismantling device at night for easy recovery.

[0087] Through the description of multiple embodiments of the parachute removing device of the present invention, it can be seen that the parachute removing device of the present invention has at least one or more of the following advantages:

[0088] 1. When the water entry detector 900 and the acceleration sensor 110 send electrical signals to the electric control board 800, when the preset conditions are met, the electric control board 800 sends electrical signals to the release member 600, so that the release member 600 drives the clamping assembly to disengage from the connecting column 300, so that the connecting column 300 is separated from the housing 100, so that the load on the connecting column 300 is separated from the parachute on the housing 100;

[0089] 2. When the inner circumferential wall of the sleeve 500 abuts against the bead 400 and the bead 400 is partially engaged with the slot 301, the connecting column 300 is connected to the housing 100. When the load needs to be separated from the parachute, the release member 600 drives the sleeve 500 to slide on the sleeve 200 so that the sleeve 500 is separated from the bead 400. Under the action of gravity, the connecting column 300 moves downward. Because the inner wall of the slot 301 is an arc surface, it will push the bead 400 to slide in the through hole 201 so that the bead 400 is separated from the slot 301, and the connecting column 300 loses its limit, and the connecting column 300 is separated from the sleeve 200 and the housing 100, so as to achieve the separation of the load and the parachute.

[0090] Please refer to all the drawings. In addition, the present application also provides a control method for a parachute releasing device. When the release member 600 receives an electrical signal, the release member 600 is controlled to start so that the clamping assembly is separated from the connecting column 300. After the acceleration sensor 110 detects weightlessness, after waiting for a set time, the electric control board 800 sends an electrical signal to the release member 600. Or, after the acceleration sensor 110 detects weightlessness, the first impact and the second impact in sequence, the electric control board 800 sends an electrical signal to the release member 600.

[0091] Through the above scheme, the payload can be separated from the parachute after waiting for a set time after being dropped; or the payload can be separated from the parachute during the second impact of entering the water. Multiple schemes are provided to avoid the situation where the separation time of the parachute and the payload does not meet the requirements due to false triggering.

[0092] In one embodiment, after the acceleration sensor 110 detects weightlessness, the specific form of sending an electrical signal to the electric control board 800 after waiting for a set time is that when the acceleration sensor 110 detects the weightlessness event EVE_FALLING, the time T1 is recorded, and after T1+the set time, the electric control board 800 sends an electrical signal to the release member 600. For example, when the delivery time is 12:30:00 and the set time is 10 seconds, the time when the acceleration sensor 110 detects the weightlessness event EVE_FALLING is 12:30:00; and the electric control board 800 waits until 12:30:10 to send an electrical signal to the release member 600.

[0093] Furthermore, the set time is manually set or factory preset.

[0094] In another embodiment, after the acceleration sensor 110 detects weightlessness, the specific form of the electric control board 800 sending an electrical signal to the release member 600 after waiting for a set time is that when the acceleration sensor 110 detects the weightlessness event EVE_FALLING, the timing starts, and when the time reaches the set time, the electric control board 800 sends an electrical signal to the release member 600. For example, if the set time is 10S, the acceleration sensor 110 starts timing after detecting the weightlessness event, and when the timing reaches 10S, the electric control board 800 sends an electrical signal to the release member 600. In another embodiment, the timing mode is countdown, for example, if the set time is 10S, the acceleration sensor 110 starts counting down from 10S after detecting the weightlessness event, and when the timing reaches 0, the electric control board 800 sends an electrical signal to the release member 600.

[0095] In one embodiment, after the acceleration sensor 110 detects weightlessness, the first impact, and the second impact in sequence, the electric control board 800 sends an electrical signal to the release member 600. Specifically, when the acceleration sensor 110 detects the weightlessness event EVE_FALLING, the electric control board 800 records the weightlessness event EVE_FALLING. After the parachute is opened, the parachute opening impact will be generated on the airdropped load, and the electric control board 800 records the first impact event EVE_ACC1. When the airdropped load continues to fall, when the load touches the water surface, the water entry impact will be generated again, and the electric control board 800 records the second impact event EVE_ACC2. When the electric control board 800 successively records the weightlessness event EVE_FALLING, the first impact event VE_ACC1, and the second impact event EVE_ACC2, the electric control board 800 sends an electrical signal to the release member 600. In this solution, it is necessary to completely record the weightlessness, the first impact, and the second impact before the parachute removal device separates the parachute from the load to avoid false triggering.

[0096] In some embodiments, the water entry detector 900 is disposed outside the housing 100. When the water entry detector 900 detects water, the electric control board 800 sends an electrical signal to the release member 600. After the load enters the water, the load is separated from the parachute, and a variety of solutions for separating the load from the parachute are provided.

[0097] Specifically, when the parachute releasing device contacts water, the electric control board 800 detects that the resistance of the water entry detector 900 changes, and then detects the water entry event EVE_ENTRY, and the electric control board 800 sends an electrical signal to the release member 600.

[0098] In some embodiments, a barometer is also provided on the housing 100; when the acceleration sensor 110 detects weightlessness, the barometer continuously detects the air pressure value, and when the air pressure value is lower than a preset value, the electric control board 800 sends an electrical signal to the release member 600. The current altitude can be determined by the air pressure value, and when the load reaches the preset altitude, the load is separated from the parachute, providing a variety of solutions for separating the load from the parachute. The preset value is set manually or preset at the factory.

[0099] Specifically, during the falling process of the load, the barometer continuously detects the air pressure value to convert the current buoy height. When it is determined that the current buoy altitude is lower than the preset height, the in-place event EVE_ALTI is recorded. When the electronic control board 800 successively detects the weightlessness event EVE_FALLING and the in-place event EVE_ALTI, the electronic control board 800 sends an electrical signal to the release member 600.

[0100] It is worth noting that in any of the above situations, the electric control board 800 will send an electrical signal to the release member 600 so that the release member 600 separates the clamping assembly from the connecting column 300, thereby separating the load from the parachute, thereby improving the stability of the separation operation.

[0101] In the present application, when not air-dropped, the elastic member 130 is compressed and the connecting column 300 is inserted into the sleeve 200 . At this time, the card bead 400 located in the through hole 201 is abutted by the inner wall of the sleeve 500 so that the card bead 400 is partially engaged in the card slot 301 .

[0102] During the process of airdropping the load, due to gravity, the load is falling and the parachute is on top, which reduces the falling speed of the load. And the bead 400 is always under the downward pulling force of the connecting column 300. When the electric control board 800 sends an electrical signal to the release member 600, the release member 600, i.e., the electromagnet, is activated to generate magnetic force, and the electromagnet attracts the sleeve 500 to move away from the load. At this time, the accommodating cavity of the sleeve 500 moves to the through hole 201, and the bead 400 loses the contact with the sleeve 500 and can move away from the connecting column 300. The load pulls the connecting column 300 downward. At this time, because the slot 301 is an arc surface, it will push the bead 400 away from the connecting column 300. The bead 400 moves to the end of the through hole 201 away from the connecting column 300. Finally, the bead 400 is separated from the slot 301, and the connecting column 300 loses the limit. The connecting column 300 and the load are separated from the parachute and the shell 100.

[0103] Through the description of multiple embodiments of the control method of the parachute dismantling device of the present invention, it can be seen that the control method of the parachute dismantling device of the present invention has at least one or more of the following advantages:

[0104] Provides multiple solutions to avoid the situation where the separation time of the parachute and the payload does not meet the requirements due to false triggering.

[0105] Finally, it should be noted that: the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0106] The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A parachute removing device, characterized in that: include: A shell, on which a parachute is arranged; A connecting column, wherein the two ends of the connecting column are respectively a first end and a second end, the first end is detachably plugged into the housing, and the second end is used to be connected to a load; A clamping assembly, the clamping assembly is disposed on the housing, and the clamping assembly is used to be connected to the connecting column; An electric control board, the electric control board is arranged in the housing; A release member, the release member is used to drive the clamping assembly to disengage from the connecting column; The release member is electrically connected to the electric control board; A water ingress detector, the water ingress detector being electrically connected to the electric control board; an acceleration sensor, the acceleration sensor being electrically connected to the electric control board; The clamping assembly includes a clamping bead and a shaft sleeve; a sleeve is provided on the housing; the first end of the connecting column is used to be plugged into the sleeve; A slot is formed on the peripheral wall of the connecting column; the inner wall of the slot is in the form of an arc surface; A through hole is formed on the peripheral wall of the sleeve, and the card bead slides in the through hole; The shaft sleeve is sleeved and slid on the sleeve, and when the inner peripheral wall of the sleeve abuts against the clamping bead, part of the clamping bead is located in the clamping groove; The release member is used to drive the sleeve to slide along the length direction of the sleeve; The release member is an electromagnet, and the electromagnet is located on either side of the sleeve; An annular accommodating cavity is provided on the inner peripheral wall of the sleeve at a side away from the electromagnet; the accommodating cavity is used to accommodate the part of the card bead; when the card bead part is located in the accommodating cavity, the card bead is separated from the card slot; Wherein, when the release member receives an electrical signal, the release member is controlled to start so that the clamping assembly is separated from the connecting column; After the acceleration sensor detects weightlessness, the first impact and the second impact in sequence, the electric control board sends an electrical signal to the release member; When the water ingress detector detects water, the electric control board sends an electrical signal to the release member; The housing is also provided with a barometer; when the acceleration sensor detects weightlessness, the barometer continuously detects the air pressure value, and when the air pressure value is lower than a preset value, the electric control board sends an electrical signal to the release member; Among them, after the acceleration sensor detects weightlessness, the first impact and the second impact in sequence, the electronic control board sends an electrical signal to the release component. The specific form is that when the acceleration sensor detects the weightlessness event EVE_FALLING, the electronic control board records the weightlessness event EVE_FALLING. After the parachute is opened, the parachute opening impact will be generated on the airdropped payload, and the electronic control board records the first impact event EVE_ACC1; the airdropped payload continues to descend, and when the payload touches the water surface, it will generate water entry impact again, and the electronic control board records the second impact event EVE_ACC2. When the electronic control board successively records the weightlessness event EVE_FALLING, the first impact event VE_ACC1, and the second impact event EVE_ACC2, the electronic control board sends an electrical signal to the release component.

2. The parachute releasing device according to claim 1, characterized in that: A plurality of through holes are arranged at intervals along the circumference of the sleeve, and a plurality of the card beads are arranged in one-to-one correspondence with the through holes; The clamping groove is arranged in the form of an annular groove along the circumference of the connecting column.

3. The parachute releasing device according to claim 2, characterized in that: One end of the sleeve away from the connecting column is plugged and detachably connected with a parachute connecting piece, and the parachute connecting piece is used to be connected to the parachute.

4. The parachute releasing device according to claim 3, characterized in that: An elastic member is arranged in the sleeve, and the elastic member is located between the connecting column and the parachute connecting member, and the elastic member is used for pushing the connecting column away from the parachute connecting member.

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