A parachute separation device

Abstract

The invention discloses a parachute separation device. The device comprises: a parachute release mechanism and a parachute connector, the parachute release mechanism comprises a pin shaft and a screw seat; the pin shaft for connecting the parachute comprises a screw plug, and the screw plug is detachably connected to the screw seat; a piston rod and a dissolving block that dissolves in water are arranged inside the screw seat; the piston rod can move toward the dissolving block, and a first spring is arranged between the piston rod and the screw seat; a screw seat groove structure is arranged on the inner side wall of the screw seat, a screw plug channel is arranged on the screw plug, a piston rod slot hole is arranged on the piston rod, a steel ball is clamped between the screw seat groove structure and the screw plug channel, and the depth of the screw seat groove structure is less than the radius of the steel ball; a second spring is arranged on the pin shaft; the parachute connector connects the device, the dissolving block dissolves in water, the first spring pushes the piston rod to move toward the dissolving block, the steel ball is pressed into the screw plug channel by the screw seat groove structure, and the second spring drives the pin shaft to separate from the screw seat, and then the parachute is separated from the device, thereby achieving the purpose of avoiding the impact of water flow scouring on the deployment point.

Description

Technical Field

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

[0002] For airdropped underwater equipment, the parachute is the main component for deceleration in the air and control of its attitude and trajectory. After the equipment is dropped into the water, the functions of the parachute are fully realized, but it is not separated from the equipment. As the equipment sinks to the bottom of the sea, the equipment is impacted by the water flow underwater, and the parachute will open to bear the force. For lighter equipment and when the drop point is on a sandy bottom, the parachute may drag the equipment away from the original deployment point. The rolling and bumping of the equipment on the seabed will reduce the reliability of the equipment.

[0003] With regard to the problem in the prior art that after the equipment is dropped into the water from the air, the parachute cannot be separated from the equipment, which may cause the parachute to drag the equipment away from the original deployment point, and the equipment may roll and bump on the seabed, thereby reducing the reliability of the equipment, no effective solution has been proposed so far. Summary of the invention

[0004] A parachute separation device is provided in an embodiment of the present invention to solve the problem in the prior art that after the equipment is dropped into water from the air, the parachute cannot be separated from the equipment, which may cause the parachute to drag the equipment away from the original deployment point, and the equipment may roll and bump on the seabed, thereby reducing the reliability of the equipment.

[0005] In order to achieve the above object, the present invention provides a parachute separation device, which comprises:

[0006] A parachute release mechanism, the parachute release mechanism comprising: a detachably connected pin shaft and a screw seat; the pin shaft for connecting the parachute comprises a screw plug, the screw plug is detachably connected to the screw seat; a piston rod and a dissolving block that dissolves in water are arranged inside the screw seat; the piston rod can move toward the dissolving block, and a first spring for pushing the piston rod to move is arranged between the piston rod and the screw seat; a screw seat groove structure is arranged on the inner side wall of the screw seat, a screw plug channel corresponding to the screw seat groove structure is arranged on the screw plug, and a screw plug hole corresponding to the screw seat groove structure is arranged on the piston rod. A piston rod slot hole corresponding to the screw plug channel is provided, a steel ball is clamped between the screw seat slot structure and the screw plug channel to realize the fixed connection between the screw plug and the screw seat, when the dissolving block dissolves, the first spring can push the piston rod to move so that the piston rod slot hole is aligned with the screw plug channel and form an escape space for the steel ball to move away from the screw seat slot structure; the depth of the screw seat slot structure is less than the radius of the steel ball; a second spring is provided on the pin shaft for driving the pin shaft to move in a direction away from the screw seat;

[0007] A parachute connector, the parachute connector used for connecting equipment is provided with a sleeve hole, and the sleeve hole matches the pin shaft.

[0008] Optionally, the screw seat groove structural area includes an upper side surface; the upper side surface squeezes the steel ball, so that when the piston rod moves, the upper side surface can apply a thrust to the steel ball toward the screw plug channel.

[0009] Optionally, there are at least two steel balls, and the two steel balls are respectively arranged on both sides of the piston rod.

[0010] Optionally, the screw seat includes a screw sleeve and a cover plate; the screw sleeve is a cylindrical structure; a plurality of first water inlet holes arranged in sequence are arranged on the side wall of the screw sleeve close to the dissolving block; and a second water inlet hole is arranged on the cover plate.

[0011] Optionally, the dissolving block is a cylindrical structure; the outer diameter of the cross section of the dissolving block is larger than the diameter of the second water inlet hole.

[0012] Optionally, the bottom surface of the screw plug squeezes the first spring to apply pressure to the first spring to cause it to deform.

[0013] Optionally, the parachute connector is a U-shaped structure, and the sleeve hole is correspondingly arranged on the side wall of the parachute connector for allowing the pin shaft to pass through; one end of the pin shaft is a connecting end, and the other end of the pin shaft is a free end; the connecting end is detachably connected to the screw seat; the second spring is arranged between the free end and the sleeve hole away from the screw seat and on the pin shaft.

[0014] Optionally, the cover plate is provided with evenly distributed fixing holes for screws to penetrate and fix the cover plate to the screw sleeve.

[0015] Optionally, a gasket is provided between the cover plate and the screw.

[0016] Optionally, the piston rod is an integrated structure; the pin shaft is an integrated structure.

[0017] Beneficial effects of the present invention:

[0018] The present invention provides a parachute separation device, which comprises: a parachute release mechanism and a parachute connector, wherein the parachute release mechanism comprises: a detachably connected pin shaft and a screw seat; the pin shaft used for connecting the parachute comprises a screw plug, and the screw plug is detachably connected to the screw seat; a piston rod and a dissolving block that dissolves in water are arranged inside the screw seat; the piston rod can move toward the dissolving block, and a first spring for pushing the piston rod to move is arranged between the piston rod and the screw seat; a screw seat groove structure is arranged on the inner side wall of the screw seat, a screw plug channel corresponding to the screw seat groove structure is arranged on the screw plug, and a piston corresponding to the screw plug channel is arranged on the piston rod A rod slot hole, a steel ball is clamped between the screw seat slot structure and the screw plug channel, and is used to achieve a fixed connection between the screw plug and the screw seat. When the dissolving block dissolves, the first spring can push the piston rod to align the piston rod slot hole with the screw plug channel and form an escape space for the steel ball to move out of the screw seat slot structure; the depth of the screw seat slot structure is less than the radius of the steel ball, so that the screw seat slot structure gives the steel ball a force to move the steel ball out of the screw seat slot structure; a second spring is provided on the pin shaft for driving the pin shaft to move in a direction away from the screw seat; the parachute connector for connecting the device is provided with a sleeve hole, and the sleeve hole cooperates with the pin shaft.

[0019] Through the above structural design, after the device connected to the parachute connector enters the water, the dissolving block dissolves when it encounters water, and the first spring pushes the piston rod to move toward the dissolving block, so that the piston rod slot is aligned with the screw plug channel, and the steel ball moves out of the screw seat slot structure and enters between the piston rod slot and the screw plug channel, and the second spring drives the pin to move in a direction away from the screw seat, and the screw seat is separated from the pin, thereby separating the parachute connector from the pin, and the parachute connected to the pin is separated from the device connected to the parachute connector. In this way, after the device enters the water, it is no longer dragged by the parachute to deviate from the original deployment point, achieving the purpose of preventing water erosion from affecting the deployment point. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a parachute separation device provided in an embodiment of the present invention.

[0021] Explanation of symbols:

[0022] Parachute connector-1, pin shaft-2, screw seat-3, screw plug-4, dissolving block-5, piston rod-6, first spring-7, steel ball-8, second spring-9, cover plate-10, screw sleeve-11, first water inlet hole-12, second water inlet hole-13, screw-14. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] For airdropped underwater equipment, the parachute is the main component for deceleration in the air and control of its attitude and trajectory. After the equipment is dropped into the water, the functions of the parachute are fully realized, but it is not separated from the equipment. As the equipment sinks to the bottom of the sea, the equipment is impacted by the water flow underwater, and the parachute will open to bear the force. For lighter equipment and when the drop point is on a sandy bottom, the parachute may drag the equipment away from the original deployment point. The rolling and bumping of the equipment on the seabed will reduce the reliability of the equipment.

[0025] Therefore, the present invention provides a parachute separation device, Figure 1 is a structural schematic diagram of a parachute separation device provided by an embodiment of the present invention, such as Figure 1 As shown, the device comprises: a parachute release mechanism and a parachute connector 1.

[0026] The parachute release mechanism includes: a detachably connected pin shaft 2 and a screw seat 3; the parachute is hung on the pin shaft 2 by a hook, and the pin shaft 2 includes a screw plug 4, which is a rocket-shaped structure (such as Figure 1 As shown, the screw plug 4 includes three sections from top to bottom: a top section, a middle section and a tail section; the top section is a prism-shaped structure, or a conical structure; the middle section is a rectangular parallelepiped structure, or a cylindrical structure; the tail section is a rectangular structure or a cube-shaped structure, or a cylindrical structure, and the cross-sectional width of the tail section is greater than or equal to the cross-sectional width of the middle section), and the screw plug 4 is detachably connected to the screw seat 3 (before the parachute release mechanism enters the water, the screw plug 4 is in a connected state with the screw seat 3, and when the parachute release mechanism enters the water After the screw seat 3 enters the water, the dissolving block 5 dissolves, and the screw plug 4 and the screw seat 3 become separated), a piston rod 6 and a dissolving block 5 that dissolves in water are provided inside the screw seat 3, and the piston rod 6 can move toward the dissolving block 5 (when the screw seat 3 does not enter the water, the dissolving block 5 does not change, and the piston rod 6 does not move either; when the screw seat 3 enters the water, the dissolving block 5 dissolves in water, and the piston rod 6 is no longer supported by the dissolving block 5. Under the action of the first spring 7, the piston rod 6 moves toward the dissolving block 5), and a first spring 7 for pushing the piston rod 6 to move is provided between the piston rod 6 and the screw seat 3.

[0027] The piston rod 6 can be a cross-shaped structure or a vertical single-rod structure, and the piston rod 6 is an integrated structure; in the present invention, the piston rod 6 is a cross-shaped structure, which includes a transverse rod and a vertical rod, the transverse rod is a disc-shaped structure, and the vertical rod is a rocket-shaped structure (the vertical rod is divided into four parts from top to bottom: a top part, a first middle part, a second middle part and a tail part; the top part is a prism-shaped structure, or a cone-shaped structure; the first middle part is a rectangular parallelepiped structure, or a cylindrical structure; the second middle part is a rectangular parallelepiped structure, or a cylindrical structure; the cross-sectional width of the first middle part is equal to the cross-sectional width of the second middle part Cross-sectional width; the tail part is a rectangular structure, or a cylindrical structure, and the length of the tail part is not greater than the length of the dissolving block 5), the transverse rod abuts the dissolving block 5, and a first spring 7 is arranged between the bottom surface of the screw plug 4 and the transverse rod and on the second middle part. When the dissolving block 5 dissolves in water, the first spring 7 pushes the transverse rod to move toward the dissolving block 5; when the piston rod 6 is a vertical single-rod structure (that is, there is no above-mentioned transverse rod), the head of the first spring 7 can be fixedly connected to the piston rod 6 by an adhesive, or it can be fixedly connected to the piston rod 6 by welding. When the dissolving block 5 dissolves in water, the first spring 7 pushes the piston rod 6 to move toward the dissolving block 5.

[0028] A screw seat groove structure is provided on the inner side wall of the screw seat 3, a screw plug channel corresponding to the screw seat groove structure is provided on the screw plug 4 (specifically, a screw plug channel corresponding to the screw seat groove structure is provided on the tail section of the screw plug 4), a piston rod slot hole corresponding to the screw plug channel is provided on the piston rod 6 (specifically, a piston rod slot hole corresponding to the screw plug channel is provided on the first middle part of the piston rod 6), a steel ball 8 is clamped between the screw seat groove structure and the screw plug channel for realizing a fixed connection between the screw plug 4 and the screw seat 3, and when the dissolving block 5 dissolves, the first spring 7 can push the piston rod 6 to align the piston rod slot hole with the screw plug channel and form an escape space for the steel ball 8 to move out of the screw seat groove structure.

[0029] The top portion of the piston rod 6 may also be a cube-shaped structure or a rectangular parallelepiped structure, as long as the piston rod 6 can be easily inserted into the tail section of the screw plug 4 .

[0030] The depth of the screw seat groove structure is smaller than the radius of the steel ball 8, that is, more than 1 / 2 of the steel ball 8 is stuck in the screw plug channel, and less than 1 / 2 of the steel ball 8 is stuck in the screw seat groove structure. In this way, a small part of the steel ball is in the screw seat groove structure, and the steel ball 8 can only be moved out of the screw seat groove structure by the force of the screw seat groove structure, that is, the steel ball 8 can be moved off the screw seat groove structure and enter between the piston rod slot hole and the screw plug channel, or the steel ball 8 completely enters the screw plug channel, at which time the piston rod 6 has moved to a position where it does not contact the steel ball 8.

[0031] A second spring 9 is provided on the pin shaft 2 for driving the pin shaft 2 to move in a direction away from the screw seat 3; the parachute connector 1 for connecting the equipment is provided with a sleeve hole, which matches the pin shaft 2. In this way, when the steel ball 8 is separated from the screw seat groove structure, the pin shaft 2 is separated from the screw seat 3, and the pin shaft 2 is ejected from the sleeve hole driven by the second spring 9. At this time, the equipment connected to the parachute connector 1 is separated from the parachute connected to the pin shaft 2, and the equipment enters the water. The parachute is no longer opened to bear the force, and the towing equipment deviates from the original deployment point, ensuring that the equipment will not fall into a dangerous area (for example: a reef area), thereby ensuring the reliability of the equipment (the equipment rolls in the reef area and collides with the reef, which will reduce the reliability of the equipment).

[0032] The screw seat groove structure area includes an upper side surface; the upper side surface is an arc-shaped surface, and the upper side surface squeezes the steel ball 8, so as to realize that during the dissolution process of the dissolving block 5, the upper side surface can apply a thrust (a component force) to the steel ball 8 toward the direction of the screw plug channel. There are at least two steel balls 8, and the two steel balls 8 are respectively arranged on both sides of the piston rod 6. Correspondingly, the screw seat groove structure is also provided with two; Figure 1 As shown in , when the piston rod 6 is ready to move, the steel ball 8 on the right side is subjected to a force from the upper side of the right screw seat groove structure to the lower left, and the steel ball 8 on the right side is subjected to an upward force from the lower side of the right screw seat groove structure, and the two forces work together to move the steel ball 8 on the right side to the left (moving to the plug hole, until the steel ball 8 on the right side is separated from the right screw seat groove structure and completely enters the plug hole); Conversely, the steel ball 8 on the left side is subjected to a force from the upper side of the left screw seat groove structure to the lower right, and the steel ball 8 on the right side is subjected to an upward force from the lower side of the left screw seat groove structure, and the two forces work together to move the steel ball 8 on the left side to the right (moving to the plug hole, until the steel ball 8 on the left side is separated from the left screw seat groove structure and completely enters the plug hole). Furthermore, the surface of the steel ball 8 is coated with grease, so that the steel ball 8 can slide into the plug hole.

[0033] In an optional embodiment, the screw seat 3 includes a screw sleeve 11 and a cover plate 10; the screw sleeve 11 is a cylindrical structure; the cover plate 10 is a circular plate structure; the cover plate 10 is provided with evenly distributed fixing holes for screws 14 to penetrate and fix the cover plate 10 and the screw sleeve 11, and all the fixing holes are arranged at equal intervals around the center of the cover plate 10. A gasket is provided between the cover plate 10 and the screw 14 to protect the screw 14 and the cover plate 10 (fixing hole) structure.

[0034] A plurality of first water inlet holes 12 arranged in sequence are arranged on the side wall of the screw sleeve 11 near the dissolving block 5; and a second water inlet hole 13 is arranged on the cover plate 10. When the device falls into the seawater, seawater can enter from the water inlet hole to dissolve the dissolving block 5. Preferably, the second water inlet hole 13 is a circular hole, and the first water inlet holes 12 are arranged in row and column directions. The arrangement in the row direction is as follows: all the first water inlet holes 12 in each row are arranged at equal intervals around the side wall of the screw sleeve 11 with the second water inlet hole 13 as the center; and the arrangement in the column direction is as follows: all the first water inlet holes 12 in each column are arranged at equal intervals from top to bottom on the side wall of the screw sleeve 11 near the dissolving block 5. The dissolving block 5 is a cylindrical structure; the outer diameter of the cross section of the dissolving block 5 (the cross section perpendicular to the axis of the dissolving block 5) is greater than the diameter of the second water inlet hole 13, so that it can be ensured that the dissolving block 5 does not slide directly out of the second water inlet hole 13 when the parachute does not enter the water. Preferably, in the present invention, the second water inlet hole 13 is arranged at the center of the cover plate 10, and the inner diameter of the cross section of the dissolving block 5 is equal to the diameter of the second water inlet hole 13. Of course, the second water inlet hole 13 can also be rectangular or square, and the position of the second water inlet hole 13 can also be at any position except the center of the cover plate 10, as long as the maximum length of the second water inlet hole 13 does not exceed the outer diameter of the cross section of the dissolving block 5.

[0035] In the present invention, the bottom surface of the screw plug 4 squeezes the first spring 7 to apply pressure to the first spring 7 to deform it. After the first spring 7 is deformed, a force is applied to the piston rod 6 to move it toward the dissolving block 5 .

[0036] The parachute connector 1 is a U-shaped structure, and the sleeve hole is correspondingly arranged on the side wall of the parachute connector 1 for the pin shaft 2 to pass through; the pin shaft 2 is an integrated structure, one end of the pin shaft 2 is a connecting end, and the other end of the pin shaft 2 is a free end; the connecting end is detachably connected to the screw seat 3; a second spring 9 is arranged between the free end and the sleeve hole in the direction away from the screw seat 3 and on the pin shaft 2. In this way, when the piston rod 6 moves to separate the pin shaft 2 from the screw seat 3, the second spring 9 directly drives the pin shaft 2 to move in the direction away from the screw seat 3.

[0037] A parachute separation device provided by the present invention comprises: a parachute release mechanism and a parachute connector 1, wherein the parachute release mechanism comprises: a detachably connected pin shaft 2 and a screw seat 3; the pin shaft 2 for connecting the parachute comprises a screw plug 4, and the screw plug 4 is detachably connected to the screw seat 3; a piston rod 6 and a dissolving block 5 that dissolves in water are arranged inside the screw seat 3; the piston rod 6 can move toward the dissolving block 5, and a first spring 7 for pushing the piston rod 6 to move is arranged between the piston rod 6 and the screw seat 3; a screw seat groove structure is arranged on the inner side wall of the screw seat 3, a screw plug channel corresponding to the screw seat groove structure is arranged on the screw plug 4, and a piston rod groove corresponding to the screw plug channel is arranged on the piston rod 6 A hole is provided between the screw seat groove structure and the screw plug channel, and a steel ball 8 is provided for realizing a fixed connection between the screw plug 4 and the screw seat 3. When the dissolving block 5 is dissolved, the first spring 7 can push the piston rod 6 to move so that the piston rod groove hole is aligned with the screw plug channel and form an escape space for the steel ball 8 to move away from the screw seat groove structure; the depth of the screw seat groove structure is less than the radius of the steel ball 8, so that the screw seat groove structure gives the steel ball 8 a force to move the steel ball 8 away from the screw seat groove structure; a second spring 9 is provided on the pin shaft 2 for driving the pin shaft 2 to move in a direction away from the screw seat 3; the parachute connector 1 for connecting equipment is provided with a sleeve hole, and the sleeve hole cooperates with the pin shaft 2.

[0038] Through the above structural design, after the equipment connected to the parachute connector 1 enters the water, the dissolving block 5 dissolves when it encounters water, and the first spring 7 pushes the piston rod 6 to move toward the dissolving block 5, so that the piston rod slot is aligned with the screw plug channel, and the steel ball 8 moves away from the screw seat slot structure and enters between the piston rod slot and the screw plug channel, and the second spring 9 drives the pin 2 to move in a direction away from the screw seat 3, and the screw seat 3 is separated from the pin 2, thereby separating the parachute connector 1 from the pin 2, and the parachute connected to the pin 2 is separated from the equipment connected to the parachute connector 1. In this way, after the equipment enters the water, it is no longer dragged by the parachute to deviate from the original deployment point, and the purpose of avoiding the impact of water scouring on the deployment point is achieved.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A parachute separation device, characterized in that: include: A parachute release mechanism, the parachute release mechanism comprising: a detachably connected pin shaft and a screw seat; The pin shaft for connecting the parachute includes a screw plug, which is detachably connected to the screw seat; a piston rod and a dissolving block that dissolves in water are provided inside the screw seat; the piston rod can move toward the dissolving block, and a first spring for pushing the piston rod to move is provided between the piston rod and the screw seat; a screw seat groove structure is provided on the inner side wall of the screw seat, a screw plug channel corresponding to the screw seat groove structure is provided on the screw plug, a piston rod slot hole corresponding to the screw plug channel is provided on the piston rod, a steel ball is clamped between the screw seat groove structure and the screw plug channel to achieve a fixed connection between the screw plug and the screw seat, and when the dissolving block dissolves, the first spring can push the piston rod to move so that the piston rod slot hole is aligned with the screw plug channel and form an escape space for the steel ball to move out of the screw seat groove structure; The depth of the screw seat groove structure is smaller than the radius of the steel ball; A second spring is provided on the pin shaft for driving the pin shaft to move in a direction away from the screw seat; A parachute connector, the parachute connector for connecting equipment is provided with a sleeve hole, the sleeve hole matches the pin shaft; The screw seat groove structural area includes an upper side surface; the upper side surface squeezes the steel ball, so that when the piston rod moves, the upper side surface can apply a thrust to the steel ball in the direction of the screw plug channel; The screw seat comprises a screw sleeve and a cover plate; The screw sleeve is a cylindrical structure; a plurality of first water inlet holes arranged in sequence are arranged on the side wall of the screw sleeve close to the dissolving block; and a second water inlet hole is arranged on the cover plate.

2. The device according to claim 1, characterized in that: At least two steel balls are provided, and the two steel balls are respectively arranged on both sides of the piston rod.

3. The device according to claim 1, characterized in that: The dissolving block is a cylindrical structure; the outer diameter of the cross section of the dissolving block is larger than the diameter of the second water inlet hole.

4. The device according to claim 1, characterized in that: The bottom surface of the screw plug presses the first spring to apply pressure to the first spring to deform it.

5. The device according to claim 1, characterized in that: The parachute connector is a U-shaped structure, and the sleeve hole is correspondingly arranged on the side wall of the parachute connector for allowing the pin to pass through; One end of the pin shaft is a connecting end, and the other end of the pin shaft is a free end; the connecting end is detachably connected to the screw seat; the second spring is arranged between the free end and the sleeve hole away from the screw seat and on the pin shaft.

6. The device according to claim 1, characterized in that: The cover plate is provided with evenly distributed fixing holes for screws to penetrate and fix the cover plate to the screw sleeve.

7. The device according to claim 6, characterized in that: A gasket is provided between the cover plate and the screw.

8. The device according to claim 1, characterized in that: The piston rod is an integrated structure; The pin shaft is an integrated structure.

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