A passive separation self-spinning parachute device

Abstract

A passively separating, self-spinning parachute release device includes a gas source, a parachute connecting assembly, a support connecting assembly, and an unlocking assembly. The unlocking assembly is connected to the parachute via the parachute connecting assembly, and to the recovery chamber via the support connecting assembly. The gas source is connected to the unlocking assembly and includes an igniter, a washer, a propellant cartridge, a propellant baffle, and a cover, outputting high-pressure gas to drive the actuator. The parachute connecting assembly connects and self-spins the separation body via an upper bolt, an upper connecting ring, an outer cylinder, a bearing, and a connecting shaft. The support connecting assembly connects the release device to the main body structure via a lower connecting ring, a lower bolt, a nut, a cotter pin, and a set screw. The unlocking assembly reliably connects the release device before operation and passively separates it during operation via an inner cylinder, a slider, a shear pin, a wedge, and a support frame. When the release device is operating, the propellant gas acts on the unlocking assembly, having no effect on the separation body, greatly improving safety during separation.

Description

Technical Field

[0001] This invention relates to a parachute release device capable of actively unlocking and passively separating, and possessing a self-de-spinning function, belonging to the field of pyrotechnic devices. Background Technology

[0002] A parachute release device is a type of pyrotechnic unlocking mechanism used to connect and separate the main parachute and the recovery capsule. During the main parachute's operational phase, the release device withstands axial tension, ensuring a reliable connection between the main parachute and the recovery capsule. After landing, the controller issues a release command, the release device ignites, and the main parachute separates from the recovery capsule, preventing the main parachute from dragging the recovery capsule. Currently, commonly used release devices include explosive bolts, unlocking devices, unlocking bolts, and separation nuts. These products all utilize the combustion gases of pyrotechnic agents to achieve active unlocking and separation.

[0003] With the development of manned spaceflight, the requirements for the safety of individual units are also increasing. Traditional parachute release devices all have a separation velocity under the action of exhaust gases, which is an active separation method. The separation joint is prone to damaging the recovery capsule, leading to accidents. Furthermore, the mutual transfer of spin between the main parachute and the recovery capsule also makes this separation method less safe. Therefore, designing a highly safe parachute release device is urgently needed. Summary of the Invention

[0004] The technical problem solved by this invention is to overcome the shortcomings of the prior art and provide a passive separation self-spinning parachute release device, which realizes the self-spinning function of the product while achieving passive separation of the main parachute and the recovery capsule, thereby improving product safety.

[0005] The technical solution adopted in this invention is as follows:

[0006] A passive separation self-extinguishing parachute release device includes: a gas source, a parachute connection assembly, a support connection assembly, and an unlocking assembly;

[0007] The unlocking component and the parachute are connected by a parachute connection component, the unlocking component and the recovery capsule are connected by a support connection component, and the gas source is connected to the unlocking component to generate high-pressure gas;

[0008] The unlocking components include: an inner cylinder, a slider, a shear pin, a wedge, and a support frame; the wedge is embedded in a square groove in the inner cylinder to connect the inner cylinder to the inner cylinder of the parachute connection assembly; the slider and the support frame are fixedly connected by the shear pin; the support frame is placed between the inner cylinder and the lower connecting ring of the support connection assembly to fix the gas source and the axial movement of the wedge.

[0009] When the self-spinning parachute release device unlocks, the gas source ignites upon receiving an electrical signal, generating high-pressure gas that is ejected from the bottom opening of the support frame and acts on the slider. Under internal pressure, the slider shears off the shear pin and begins to move. After the slider has moved a certain distance, it creates space for the wedge to unlock. If an axial load is applied to the parachute connecting assembly at this time, the wedge is subjected to radial force and retracts into the inner cylinder, separating the inner and outer cylinders and completing the separation of the parachute release device. If the parachute does not provide an axial load at this time, the parachute release device remains in its original state with no externally moving parts, preventing damage to the overall structure from product operation.

[0010] The parachute connection assembly is equipped with a thrust ball bearing to achieve a self-rotating function and prevent the parachute lines from getting tangled.

[0011] Furthermore, the gas source includes: a medicine box, a gasket, an igniter, a cover plate, and a medicine baffle plate;

[0012] The gas source and the unlocking assembly are fixed by the igniter and the detonator plate. The igniter and the detonator plate are screwed onto the support frame in the unlocking assembly. The medicine box is set between the igniter and the detonator plate. The cover is pasted on the detonator plate. The gasket is located between the igniter and the support frame.

[0013] Furthermore, when the self-spinning de-parachute device unlocks, the igniter receives an electrical signal and ignites, igniting the medicine box and generating high-pressure gas.

[0014] Furthermore, the parachute connection assembly includes: an upper bolt, an upper connecting ring, an outer cylinder, a bearing, and a connecting shaft;

[0015] The upper bolt is fixed to the upper connecting ring by a nut. The upper bolt and the upper connecting ring are used to connect the parachute. The upper end of the connecting shaft is threaded to the upper connecting ring, and the lower end passes through the outer cylinder and is located inside the outer cylinder. A thrust ball bearing is provided between the lower end of the connecting shaft and the outer cylinder to realize the self-rotation function and prevent the parachute lines from getting tangled. The outer cylinder is connected to the unlocking assembly by a wedge.

[0016] Furthermore, the support connection assembly includes: a lower connecting ring, a lower bolt, a nut, a cotter pin, and a set screw;

[0017] The lower connecting ring and the lower bolt are connected and fixed by a nut and a cotter pin. The set screw is used to prevent the threads between the lower connecting ring and the inner cylinder from loosening. The lower connecting ring is connected to the unlocking assembly by threads.

[0018] Furthermore, the passively separating self-spinning parachute release device is a strong connection with weak unlocking mechanism, that is, the parachute connection assembly and the unlocking assembly are connected by a wedge block, and the inner cylinder and outer cylinder are unlocked by cutting the shear pin.

[0019] Furthermore, the separation method between the parachute connection component and the unlocking component is passive separation.

[0020] Furthermore, there is a 0.5mm gap between the upper connecting ring and the outer cylinder, and the connection between the two is achieved through a connecting shaft. The bearing is located between the connecting shaft and the outer cylinder to achieve the self-spinning function.

[0021] The advantages of this invention compared to the prior art are:

[0022] (1) The present invention cleverly designs the unlocking component so that when the parachute is working, the gas only pushes the slide bar to move, making room for the wedge to unlock. The radial lock of the wedge is released, realizing the unlocking of the parachute from the main body structure. This method is a passive separation, and the separation joint will not damage the recovery capsule.

[0023] (2) The structural design of the inner cylinder of the present invention prevents the high-pressure gas from acting directly on the parachute connecting component, so the parachute connecting component cannot generate the initial separation velocity. At this time, if there is no axial tension of the parachute, the two will not separate, thus realizing the function of passive separation between the inner cylinder and the outer cylinder.

[0024] (3) The present invention eliminates the mutual transmission of spin between the main parachute and the recovery chamber. A thrust ball bearing is set between the connecting shaft and the outer cylinder to realize the self-de-spinning of the parachute release device, thus avoiding the parachute rope entanglement. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of a passive separation type self-spinning de-umbrella device;

[0026] Figure 2 This is a diagram showing the state of the passively separating self-spinning de-umbrella device after separation. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0028] The present invention discloses a passive separation self-spinning parachute release device, which mainly includes a gas source, a parachute connection assembly, a support connection assembly, and an unlocking assembly.

[0029] The gas source is mainly used to install the igniter and output high-pressure gas to drive the mechanism.

[0030] The parachute connection assembly is mainly connected to the parachute through an upper connecting ring and an upper bolt with a diameter of 12mm, and the parachute release device is self-de-rotating through a bearing;

[0031] The support connection assembly is mainly connected to the return capsule body structure through the lower connecting ring and the lower bolt with a diameter of 14mm, and is connected to the unlocking assembly through the M48×1.5-6H internal thread;

[0032] The unlocking component mainly uses gas to push the slide bar to cut the shear pin, which pushes the slider to move 10mm, making room for the wedge to unlock, thereby releasing the parachute connection component and achieving mechanical locking between the parachute and the main body structure.

[0033] The passive separation self-spinning parachute release device of this invention adds an inner cylinder structure to prevent the gas from acting directly on the parachute connection components, thereby realizing the passive separation of the product in principle and improving the product's safety.

[0034] Specifically, such as Figure 1 As shown, the present invention proposes a passive separation self-extinguishing parachute release device, comprising: a gas source, a parachute connection assembly, a support connection assembly, and an unlocking assembly.

[0035] The unlocking component and the parachute are connected by a parachute connection component, the unlocking component and the recovery capsule are connected by a support connection component, and the gas source is connected to the unlocking component to generate high-pressure gas;

[0036] The unlocking components include: inner cylinder 4, slider 5, shear pin 6, wedge 17 and support frame 18; wedge 17 is embedded in the square groove of inner cylinder 4 and is used to connect inner cylinder 4 to inner cylinder 3 of parachute connection assembly; slider 5 and support frame 18 are fixedly connected by shear pin 6; support frame 18 is placed between inner cylinder 4 and lower connecting ring 10 of support connection assembly and is used to fix gas source and wedge 17 axial movement.

[0037] When the self-spinning parachute release device unlocks, the gas source ignites upon receiving an electrical signal, generating high-pressure gas that is ejected from the bottom opening of the support frame 18 and acts on the slider 5. Under internal pressure, the slider 5 shears the shear pin 6 and begins to move. After the slider 5 moves a certain distance, it creates space for the wedge block 17 to unlock. If an axial load is applied to the parachute connecting assembly at this time, the wedge block 17 is subjected to radial force and retracts into the inner cylinder 4, separating the inner cylinder 4 from the outer cylinder 3, thus completing the separation of the parachute release device. If the parachute does not provide an axial load at this time, the parachute release device remains in its original state with no externally moving parts, preventing the product's operation from damaging the overall structure.

[0038] The parachute connection assembly is equipped with a thrust ball bearing 19 to achieve a self-rotating function and prevent the parachute lines from getting tangled.

[0039] Furthermore, the gas source includes: medicine box 7, gasket 8, igniter 9, cover plate 14 and medicine baffle plate 16;

[0040] The gas source and the unlocking assembly are fixed by the igniter 9 and the detonator 16. The igniter 9 and the detonator 16 are screwed onto the support frame 18 in the unlocking assembly. The medicine box 7 is set between the igniter 9 and the detonator 16. The cover 14 is pasted on the detonator 16. The washer 8 is located between the igniter 9 and the support frame 18.

[0041] When the self-spinning parachute release device is unlocked, the igniter 9 receives an electrical signal and ignites, igniting the medicine box 7 and generating high-pressure gas.

[0042] Furthermore, the parachute connection assembly includes: an upper bolt 1, an upper connecting ring 2, an outer cylinder 3, a bearing 19, and a connecting shaft 20;

[0043] The upper bolt 1 is fixed to the upper connecting ring 2 by a nut. The upper bolt 1 and the upper connecting ring 2 are used to connect the parachute. The upper end of the connecting shaft 20 is threaded to the upper connecting ring 2, and the lower end passes through the outer cylinder 3 and is located inside the outer cylinder 3. A thrust ball bearing 19 is provided between the lower end of the connecting shaft 20 and the outer cylinder 3 to realize the self-rotation function and prevent the parachute lines from getting tangled. The outer cylinder 3 is connected to the unlocking assembly through the wedge block 17.

[0044] Furthermore, the support connection assembly includes: a lower connecting ring 10, a lower bolt 11, a nut 12, a cotter pin 13, and a set screw 15;

[0045] The lower connecting ring 10 and the lower bolt 11 are connected and fixed by the nut 12 and the cotter pin 13. The set screw 15 is used to prevent the threads between the lower connecting ring 10 and the inner cylinder 4 from loosening. The lower connecting ring 10 is connected to the unlocking assembly by threads.

[0046] Furthermore, the passively separating self-spinning parachute release device is a strong connection with weak unlocking, that is, the parachute connection assembly and the unlocking assembly are connected by the wedge block 17, and the inner cylinder 4 and the outer cylinder 3 are unlocked by cutting the shear pin 6.

[0047] In this invention, the separation method between the parachute connecting component and the unlocking component is passive separation.

[0048] Furthermore, there is a 0.5mm gap between the upper connecting ring 2 and the outer cylinder 3, and the connection between the two is achieved through the connecting shaft 20. The bearing 19 is located between the connecting shaft 20 and the outer cylinder 3 to achieve the self-rotation function.

[0049] Example:

[0050] The gas source and the unlocking assembly are fixed by the M14×1-6h thread of the igniter 9, the M14×1-6h thread of the baffle plate 16 and the M14×1-6h thread of the support frame 18. The parachute connecting assembly and the unlocking assembly are fixed by the wedge block 17. The support connecting assembly and the unlocking assembly are fixed by the M48×1.5-6H thread of the lower connecting ring 10 and the M48×1.5-6h thread of the inner cylinder 4.

[0051] Actuator unlocking: Ignition 9 ignites upon receiving an electrical signal, igniting the powder box 7. The resulting high-pressure gas is ejected from the bottom opening of the support frame 18 and acts on the slider 5. Under internal pressure, the slider 5 shears the shear pin 6 and begins to move. After the slider 5 has moved a certain distance, it creates space for the wedge block 17 to unlock. If an axial load is applied to the parachute connecting assembly at this time, the wedge block 17 retracts into the inner cylinder 4, separating the inner cylinder 4 from the outer cylinder 3, thus completing the parachute release function. Figure 2 As shown.

[0052] Self-spinning actuator: A thrust ball bearing 19 is installed between the connecting shaft 20 and the outer cylinder 3 to achieve the self-spinning function.

[0053] The structural design of this invention has undergone multiple flight tests, all of which have demonstrated reliable operation. Ground tests have verified its axial load-bearing capacity and ignition performance. The axial load-bearing test results show that the connection and separation device can withstand an axial load of 200kN, and after unloading, the device shows no significant deformation and rotates freely. The ignition performance test shows that the device ignites under a 90kN axial load, can unlock normally, and has no impact on the surrounding environment, demonstrating high safety.

[0054] The parts of this invention not described in detail are common knowledge to those skilled in the art.

Claims

1. A passive separation type self-spinning parachute release device, characterized in that... include: Gas source, parachute connection assembly, support connection assembly, and unlocking assembly; The unlocking component and the parachute are connected by a parachute connection component, the unlocking component and the recovery capsule are connected by a support connection component, and the gas source is connected to the unlocking component to generate high-pressure gas; The unlocking components include: inner cylinder (4), slider (5), shear pin (6), wedge (17) and support frame (18); the wedge (17) is embedded in the square groove of the inner cylinder (4) and is used to connect the inner cylinder (4) and the outer cylinder (3) of the parachute connection assembly; the slider (5) and the support frame (18) are fixedly connected by the shear pin (6); the support frame (18) is placed between the inner cylinder (4) and the lower connecting ring (10) of the support connection assembly and is used to fix the gas source and the axial movement of the wedge (17); When the self-spinning parachute release device unlocks, the gas source ignites and generates high-pressure gas after receiving an electrical signal. The gas is ejected from the bottom opening of the support frame (18) and acts on the slider (5). Under the action of internal pressure, the slider (5) shears the shear pin (6) and begins to move. After the slider (5) moves a certain distance, it makes room for the wedge (17) to unlock. If an axial load is applied to the parachute connecting assembly at this time, the wedge (17) is subjected to radial force and retracts into the inner cylinder (4). The inner cylinder (4) separates from the outer cylinder (3), completing the separation of the parachute release device. If the parachute does not provide an axial load at this time, the parachute release device remains in its original state and has no external moving parts, preventing the product's operation from causing damage to the overall structure. The parachute connection assembly is equipped with a thrust ball bearing (19) to achieve a self-rotating function and prevent the parachute lines from getting tangled.

2. The passive separation self-spinning parachute release device according to claim 1, characterized in that: The gas source includes: medicine box (7), gasket (8), igniter (9), cover plate (14) and medicine baffle (16); The gas source and the unlocking assembly are fixed by the threads of the igniter (9) and the deflector plate (16). The igniter (9) and the deflector plate (16) are screwed onto the support frame (18) in the unlocking assembly. The medicine box (7) is set between the igniter (9) and the deflector plate (16). The cover plate (14) is pasted on the deflector plate (16). The washer (8) is located between the igniter (9) and the support frame (18).

3. A passive separation type self-spinning parachute release device according to claim 2, characterized in that: When the self-spinning parachute release device is unlocked, the igniter (9) receives an electrical signal and ignites, igniting the medicine box (7) and generating high-pressure gas.

4. A passive separation type self-spinning parachute release device according to claim 1, characterized in that: The parachute connection assembly includes: an upper bolt (1), an upper connecting ring (2), an outer cylinder (3), a bearing (19), and a connecting shaft (20); The upper bolt (1) is fixed to the upper connecting ring (2) by a nut. The upper bolt (1) and the upper connecting ring (2) are used to connect the parachute. The upper end of the connecting shaft (20) is threaded to the upper connecting ring (2), and the lower end passes through the outer cylinder (3) and is located inside the outer cylinder (3). A thrust ball bearing (19) is provided between the lower end of the connecting shaft (20) and the outer cylinder (3) to realize the self-rotation function and prevent the parachute rope from getting tangled. The outer cylinder (3) is connected to the unlocking assembly through a wedge (17).

5. A passive separation type self-spinning parachute release device according to claim 1, characterized in that: The support connection assembly includes: a lower connecting ring (10), a lower bolt (11), a nut (12), a cotter pin (13), and a set screw (15); The lower connecting ring (10) and the lower bolt (11) are connected and fixed by a nut (12) and a cotter pin (13). The set screw (15) is used to prevent the threads between the lower connecting ring (10) and the inner cylinder (4) from loosening. The lower connecting ring (10) is connected to the unlocking assembly by threads.

6. A passive separation type self-spinning parachute release device according to claim 4, characterized in that: The passive separation self-spinning parachute release device is a strong connection and weak unlocking device. That is, the parachute connection component and the unlocking component are connected by a wedge (17), and the inner cylinder (4) and the outer cylinder (3) are unlocked by cutting the shear pin (6).

7. A passive separation type self-spinning parachute release device according to claim 6, characterized in that: The separation method between the parachute connection component and the unlocking component is passive separation.

8. A passive separation type self-spinning parachute release device according to claim 4, characterized in that: There is a 0.5mm gap between the upper connecting ring (2) and the outer cylinder (3). The connection between the two is achieved through the connecting shaft (20). The bearing (19) is located between the connecting shaft (20) and the outer cylinder (3) to achieve the self-rotation function.

Images