Controllable ejection device for a cubesat

Abstract

The application relates to the technical field of cubic satellite orbit launching ejection equipment, in particular to controllable ejection equipment for a cubic satellite, which comprises a storage device, a switching device, an ejection device and an extraction device. Sliding grooves are arranged on the upper end faces of the storage device, a rectangular push plate is arranged in the storage device, a spring one is arranged below the push plate, a driving part one is arranged in the storage device, a driving shaft one is arranged at the output end of the driving part one, one end of the driving shaft one is connected with one side of the switching device, a driving part two is arranged in one end of the storage device, a driving shaft two is arranged at the output end of the driving part two, and a connecting plate is arranged on one side of the switching device. The extraction device is buckled above the cubic satellite after losing the limitation of the cubic satellite, and still moves a certain distance to the inside, so that interference caused by the release of the cubic satellite is prevented, and the cubic satellite is prevented from being damaged.

Description

Technical Field

[0001] This invention relates to the field of CubeSat launch equipment technology, and particularly to a controllable launch device for CubeSats. Background Technology

[0002] CubeSats are the main direction of microsatellite development. CubeSats can integrate various high-precision, high-performance instruments and equipment to achieve complex functions and missions. The orbital ejection system is an important device used to eject the CubeSat from the launch vehicle and send it into a predetermined orbit during the launch process. It mainly includes ejection mechanism, ejection process control and ejection safety assurance.

[0003] Traditional CubeSat launchers release CubeSats sequentially, allowing them to enter orbit in order. This prevents the free and controllable release of CubeSats at arbitrary positions. When multiple different types of CubeSats need to be released, the appropriate type cannot be selected and must be pre-arranged before launch, which complicates the CubeSat loading process.

[0004] Therefore, in view of the above situation, it is necessary to develop a device to meet the current practical applications. Summary of the Invention

[0005] Therefore, this invention was made in view of the above problems. The purpose of this invention is to solve the problem of the current inability to controllably release cubes by using an extraction device to grasp and release a pair of cubes at arbitrary positions. This invention achieves the above objective through the following technical solution:

[0006] A controllable ejection device for a cubesat includes: a storage device, a transfer device, an ejection device, and an extraction device. The storage device has sliding grooves on both sides of its upper surface. A rectangular push plate is located inside the storage device, with a spring below the push plate. A drive component is located inside the storage device, with a drive shaft at its output end. One end of the drive shaft is connected to one side of the transfer device. A second drive component is located inside one end of the storage device, with a drive shaft at its output end. A connecting plate is located on one side of the transfer device, with its lower end connected to the drive shaft. A push block is located above the transfer device. The ejection device contains a third drive component and a release plate. The extraction device is located inside the ejection device, with a sliding block below it. A rectangular groove-shaped anti-collision notch is located on one side of the extraction device. A triangular groove is located inside the extraction device, where the vertical groove is a lifting groove and the oblique groove is a control groove. A second push block is located on one side of the extraction device, and a third push block is located inside the lower part of the extraction device.

[0007] Preferably, one end of drive shaft one is connected to one side of the adapter, and one end of drive shaft two is connected to the bottom surface of the catapult.

[0008] Preferably, the cube star has a square structure, with solar wings on both sides and a cylindrical divider at the top.

[0009] Preferably, the push block is located inside the hydraulic chamber, which is connected to the telescopic tube via a pipe. The telescopic tube is a hollow tubular structure of the nested device. The other end of the telescopic tube is connected to the baffle, and one side of the baffle is connected to the interior of the transfer device via an elastic rod.

[0010] Preferably, the driving component three can drive the driving shaft three to perform telescopic movement, and the other end of the driving shaft three is connected to the extraction device.

[0011] Preferably, the release plate has a rectangular shell structure, with a spring 2 located at the bottom inside the release plate, a slot on the release plate, and control rods on both sides of the release plate. The control rods can move inside the lifting slot and the control slot.

[0012] Preferably, the ejection device has a retaining plate inside, one end of which is connected to the inside of the ejection device via an elastic rod, and a push plate is provided at the upper end of the retaining plate.

[0013] Preferably, the push block 2 is located inside the hydraulic chamber 2. The hydraulic chamber 2 is connected to the telescopic tube 2 through a pipe. The telescopic tube 2 is a hollow tubular structure of the nested device. The other end of the telescopic tube 2 is connected to the baffle 2. One side of the baffle 2 is connected to the inside of the extraction device through the elastic rod 3.

[0014] Preferably, the push block three is set inside the hydraulic chamber three, the hydraulic chamber three is connected to the telescopic pipe three through a pipe, the other end of the telescopic pipe three is connected to the baffle three, two sets of baffle three are set on both sides of the anti-collision gap, and the rear of the baffle three is connected to the inner wall of the extraction equipment through the elastic rod four.

[0015] Beneficial effects of this invention:

[0016] 1. The adapter of the present invention is equipped with a snap-fit ​​mechanism inside, which can fix and clamp the cubesat. When the held cubesat is released, the next cubesat will be loaded to facilitate subsequent launch operations. The internal part can be filled with multiple cubesat, increasing the release efficiency of cubesat.

[0017] 2. The ejection device of the present invention is equipped with a release plate inside, and the cubespot is released by the elastic force of the spring below the release plate; the extraction device is set inside the ejection device. When the extraction device moves to this side to extract the cubespot, the extraction device will squeeze the control rod of the release plate through the control groove inside during the movement, so that the release plate moves downward and stores the spring energy. When the extraction device returns to its original position with the cubespot, the cubespot is released through the release plate, thus completing the automatic release of the cubespot.

[0018] 3. After the upper latch of the extraction device of the present invention loses its restraint on the cubesat, it will still move inward a certain distance to prevent interference with the release of the cubesat and damage to the cubesat. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the entire invention. Figure 1 .

[0020] Figure 2 This is a schematic diagram of the entire invention. Figure 2 .

[0021] Figure 3 for Figure 2 Cross-section diagram at point AA Figure 1 .

[0022] Figure 4 This is a schematic diagram of the cube star of the present invention.

[0023] Figure 5 This is a schematic diagram of the adapter device of the present invention. Figure 1 .

[0024] Figure 6 This is a schematic diagram of the adapter device of the present invention. Figure 2 .

[0025] Figure 7 for Figure 6 Schematic diagram of the cross section at point BB.

[0026] Figure 8 for Figure 2 Cross-section diagram at point AA Figure 2 (Schematic diagram of catapult equipment).

[0027] Figure 9 This is a schematic diagram of the release plate of the present invention.

[0028] Figure 10 This is a schematic diagram of the card plate of the present invention.

[0029] Figure 11 This is a schematic diagram of the extraction device of the present invention. Figure 1 .

[0030] Figure 12This is a schematic diagram of the extraction device of the present invention. Figure 2 .

[0031] Figure 13 for Figure 13 Schematic diagram of the cross section at point CC.

[0032] Figure 14 for Figure 13 Schematic diagram of the cross section at point DD.

[0033] Figure 15 for Figure 2 Cross-section diagram at point AA Figure 3 (Status illustration) Figure 1 ).

[0034] Figure 16 for Figure 2 Cross-section diagram at point AA Figure 4 (Status illustration) Figure 2 ).

[0035] Figure 17 This is a schematic diagram of the entire invention. Figure 3 .

[0036] Figure 18 for Figure 2 Cross-section diagram at point AA Figure 5 (Status illustration) Figure 3 ).

[0037] In the diagram: 1. Storage device; 11. Push plate; 12. Spring 1; 13. Drive component 1; 14. Drive shaft 1; 15. Drive component 2; 16. Drive shaft 2; 17. Sliding groove; 2. Cubic star; 21. Separator; 22. Solar fin; 3. Adapter; 31. Connecting plate; 32. Push block 1; 321. Hydraulic chamber 1; 322. Telescopic tube 1; 323. Baffle 1; 324. Elastic rod 1; 4. Ejection device; 41. Drive component 3; 411. Drive shaft 3; 42. Release. 421. Plate; 422. Spring 2; 423. Control rod; 424. Slot; 43. Plate; 431. Elastic rod 2; 432. Push plate; 5. Extraction equipment; 51. Sliding block; 52. Anti-collision notch; 53. Lifting groove; 54. Control groove; 55. Push block 2; 551. Hydraulic chamber 2; 552. Telescopic tube 2; 553. Baffle 2; 554. Elastic rod 3; 56. Push block 3; 561. Hydraulic chamber 3; 562. Telescopic tube 3; 563. Baffle 3; 564. Elastic rod 4. Detailed Implementation

[0038] Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will make these embodiments readily achievable by those skilled in the art to which this invention pertains; however, the present invention may also be implemented in various different forms, and therefore the present invention is not limited to the embodiments described below; in addition, for the sake of clearer description of the present invention, components not connected to the present invention will be omitted from the drawings.

[0039] like Figure 1 As shown, a controllable ejection device for a CubeSat consists of a storage device 1, a transfer device 3, an ejection device 4, and an extraction device 5. The storage device 1 is located inside the launch vehicle and has a rectangular block structure. Sliding grooves 17 are provided on both sides of the upper end face of the storage device 1.

[0040] The storage device 1 is equipped with a transfer device 3, which can store the CubeSat 2.

[0041] One end of the storage device 1 is provided with a catapult device 4, and the catapult device 4 is provided with an extraction device 5. The extraction device 5 can extract the cubesat 2 stored in the transfer device 3 and launch the cubesat through the catapult device 4.

[0042] like Figure 2 , Figure 3 As shown, a rectangular push plate 11 is provided inside the storage device 1. A spring 12 is provided below the push plate 11. The spring 12 keeps the push plate 11 moving upward. The upper end surface of the push plate 11 contacts the bottom surface of the cube star 2 inside the adapter 3, pushing the cube star 2 to move upward.

[0043] The storage device 1 is equipped with a drive component 13, which can drive the drive shaft 14 to perform telescopic movement. One end of the drive shaft 14 is connected to one side of the adapter 3. When the drive shaft 14 performs telescopic movement, it will drive the adapter 3 to perform lifting and lowering movement inside the storage device 1.

[0044] The storage device 1 has a drive component 2 15 inside one end. The drive component 2 15 can drive the drive shaft 2 16 to perform telescopic movement. One end of the drive shaft 2 16 is connected to the bottom surface of the ejection device 4. When the drive shaft 2 16 performs telescopic movement, it will drive the ejection device 4 to perform lifting and lowering movement at one end of the storage device 1.

[0045] like Figure 4As shown, the cubestar 2 has a square structure, which is a traditional 1U star (10cm×10cm×10cm) structure. The cubestar 2 has solar panels 22 on both sides to provide energy. The upper end of the cubestar 2 is provided with a cylindrical separator 21, which facilitates the separation of the cubestar 2 during loading and prevents the cubestar 2 from colliding and being damaged during transportation.

[0046] like Figure 5 As shown, a connecting plate 31 is provided on one side of the adapter 3, and the lower part of the connecting plate 31 is connected to the drive shaft 14, so that the drive component 13 can drive the adapter 3 to move up and down; a push block 32 and a baffle 323 are provided on the upper part of the adapter 3.

[0047] like Figure 6 , Figure 7 As shown, the push block 32 is located inside the hydraulic chamber 321. The hydraulic chamber 321 is connected to the telescopic tube 322 via a pipe. The telescopic tube 322 is a hollow tubular structure of the nested device. When the inside is filled with pressure, it will extend. The other end of the telescopic tube 322 is connected to the baffle 323. When the telescopic tube 322 extends, the baffle 323 moves toward the inside of the transfer device 3. One side of the baffle 323 is connected to the inside of the transfer device 3 via an elastic rod 324. The elastic rod 324 has a certain elasticity. When it is not subjected to external force, the elastic rod 324 is in an extended state.

[0048] When the push block 32 is compressed, the compression hydraulic chamber 321 causes the telescopic tube 322 to extend, which in turn causes the baffle 323 to move toward the interior of the transfer device 3, compressing the elastic rod 324. When the push block 32 is released from compression, the elastic rod 324 returns to its original position, causing the baffle 323 to extend toward the exterior of the transfer device 3, limiting the cube star 2. The telescopic tube 322 retracts, causing the push block 32 to return to its original position.

[0049] like Figure 8 As shown, the ejection device 4 is equipped with a drive component 3 41 inside. The drive component 3 41 can drive the drive shaft 3 411 to perform telescopic movement. The other end of the drive shaft 3 411 is connected to the extraction device 5. The drive component 3 41 can drive the extraction device 5 to perform telescopic movement to one side.

[0050] The ejection device 4 is provided with a release plate 42 inside, and a second spring 421 is provided below the release plate 42. The second spring 421 keeps the release plate 42 in an upward movement state. A rectangular slot 423 is provided on one side of the release plate 42.

[0051] The ejection device 4 is equipped with a locking plate 43 inside. One end of the locking plate 43 is connected to the inside of the ejection device 4 through an elastic rod 431. The elastic rod 431 itself has a certain elasticity and is always in an extended state when it is not subjected to external force. The locking plate 43 can enter the locking groove 423 to limit the release plate 42.

[0052] The extraction device 5 is installed inside the ejection device 4. The extraction device 5 has a triangular groove inside, where the vertical groove is the lifting groove 53 and the oblique groove is the control groove 54.

[0053] like Figure 9 As shown, the release plate 42 is a rectangular shell structure. A spring 421 is provided inside the lower part of the release plate 42. A slot 423 is provided on the release plate 42. Control rods 422 are provided on both sides of the release plate 42. The control rods 422 can move inside the lifting slot 53 and the control slot 54.

[0054] like Figure 10 As shown, a push plate 432 is provided at one end of the card plate 43;

[0055] like Figure 11 As shown, a sliding block 51 is provided below the extraction device 5. The sliding block 51 can slide inside the sliding groove 17 of the storage device 1 to limit the extraction device 5. A rectangular groove-shaped anti-collision notch 52 is provided on one side of the extraction device 5. The opening of the anti-collision notch 52 is smaller than the length of the push plate 432. When the extraction device 5 moves towards the ejection device 4, the extraction device 5 will compress the push plate 432 and move into the ejection device 4. A push block 55 is provided on one side of the extraction device 5.

[0056] like Figure 12 , Figure 13 As shown, the second push block 55 is located inside the second hydraulic chamber 551. The second hydraulic chamber 551 is connected to the second telescopic tube 552 through a pipe. The second telescopic tube 552 is a hollow tubular structure of the nested device. When the inside is filled with pressure, it will extend. The other end of the second telescopic tube 552 is connected to the second baffle 553. When the second telescopic tube 552 extends, the second baffle 553 moves towards the inside of the extraction device 5. One side of the second baffle 553 is connected to the inside of the extraction device 5 through the third elastic rod 554. The third elastic rod 554 itself has a certain elasticity. When it is not subjected to external force, the third elastic rod 554 is in the extended state.

[0057] like Figure 14As shown, a push block 3 56 is provided inside the lower part of the extraction device 5. The push block 3 56 is located inside the hydraulic chamber 3 561. The hydraulic chamber 3 561 is connected to the telescopic pipe 3 562 through a pipe. The other end of the telescopic pipe 3 562 is connected to the baffle 3 563. The baffle 3 563 is provided with two sets respectively located on both sides of the anti-collision notch 52. The rear of the baffle 3 563 is connected to the inner wall of the extraction device 5 through the elastic rod 4 564.

[0058] The basic principle of this invention:

[0059] Standby phase:

[0060] like Figure 15 As shown in the figure, this is a schematic diagram of the state of storage device 1 during the launch of the transport rocket. The extraction device 5 is housed inside the ejection device 4, which is located at one end of the storage device 1. The transfer device 3 stores the CubeSat 2.

[0061] Extraction stage:

[0062] The drive component 13 on one side of the transfer device 3 where the cube star 2 to be extracted is located drives the transfer device 3 to move upward a certain distance through the drive shaft 14, so that the push block 32 of the transfer device 3 extends out of the storage device 1 a certain distance.

[0063] Drive component 2 15 drives the ejection device 4 to move upward via drive shaft 2 16, and drive component 3 41 drives the extraction device 5 to move towards the storage device 1 via drive shaft 3 411;

[0064] As the extraction device 5 moves, the control rod 422 of the release plate 42 will be squeezed by the upper end of the control groove 54. The control rod 422 will move downward inside the control groove 54, compressing the second spring 421. When the extraction device 5 moves to a certain distance, the release plate 42 is flush with the inner wall of the ejection device 4. The clamping plate 43 will be inserted into the clamping groove 423 under the action of the second elastic rod 431, limiting the release plate 42 and preventing the release plate 42 from returning to its original position.

[0065] When the extraction device 5 contacts the bottom of the transfer device 3, the push block 3 56 of the extraction device 5 is compressed, and the baffle 3 563 retracts inward through the telescopic tube 3 562, compressing the elastic rod 4 564; the push block 1 32 of the transfer device 3 is compressed, and the baffle 1 323 moves inward through the telescopic tube 1 322. At this time, the upper part of the cube star 2 is unrestricted, and the cube star 2 moves upward under the action of the push plate 11 and the spring 12. When the upper end of the cube star 2 is restricted by the baffle 2 553, it stops moving, and the cube star 2 is sent from the transfer device 3 into the extraction device 5;

[0066] Transportation phase:

[0067] like Figure 17 As shown, after the extraction device 5 stores the cube star 2, the driving component 3 41 moves the extraction device 5 towards the ejection device 4 via the driving shaft 3 411. When the extraction device 5 separates from the transfer device 3, the baffle 3 563 inside the extraction device 5 is restored by the elastic rod 4 564, and the baffle 1 323 inside the transfer device 3 is restored by the elastic rod 1 324. Since the upper and lower cube stars 2 are separated by the separator 21 at this time, the restoration of the baffle 3 563 and the baffle 1 323 is not restricted. Therefore, the baffle 1 323 of the transfer device 3 limits the newly loaded cube star 2. The baffle 3 563 of the extraction device 5 supports the bottom of the cube star 2 placed inside, preventing the cube star 2 from falling off.

[0068] Release phase:

[0069] like Figure 18 As shown, as the extraction device 5 moves toward the ejection device 4, the push block 55 is compressed, causing the baffle 553 to retract inward through the telescopic tube 552. After the baffle 553 loses its restriction on the cube star 2, it continues to move inward a certain distance to prevent interference with the release of the cube star 2. When the extraction device 5 moves to its limit, the push plate 432 of the compression plate 43 is compressed, causing the plate 43 to move inward and compress the elastic rod 431. The plate 43 loses its restriction on the release plate 42, and the control rod 422 of the release plate 42 moves upward along the lifting groove 53. The spring 421 returns to its original state, driving the release plate 42 to move upward and release the cube star 2 inside the extraction device 5.

[0070] Repeating the above steps will release the cubesat 2 from any location inside storage device 1.

Claims

1. A controllable ejection device for a CubeSat, comprising: Storage device (1), adapter (3), ejection device (4), extraction device (5); characterized in that: sliding grooves (17) are provided on both sides of the upper end face of the storage device (1), a rectangular push plate (11) is provided inside the storage device (1), a spring (12) is provided below the push plate (11), a drive component (13) is provided inside the storage device (1), a drive shaft (14) is provided at the output end of the drive component (13), one end of the drive shaft (14) is connected to one side of the adapter (3), a drive component (2) (15) is provided inside one end of the storage device (1), a drive shaft (2) (16) is provided at the output end of the drive component (2), and the rotation... A connecting plate (31) is provided on one side of the receiving device (3). The lower part of the connecting plate (31) is connected to the drive shaft (14). A push block (32) is provided on the upper part of the transfer device (3). The push block (32) is located inside the hydraulic chamber (321). The hydraulic chamber (321) is connected to the telescopic pipe (322) through a pipe. The telescopic pipe (322) is a nested hollow tubular structure. The other end of the telescopic pipe (322) is connected to the baffle (323). One side of the baffle (323) is connected to the interior of the transfer device (3) through the elastic rod (324). The ejection device (4) is provided with a drive component (41) and a release plate (42). The release plate (42) is a rectangular shell structure. A spring (421) is provided at the bottom inside the release plate (42). A slot (423) is provided on the release plate (42). Control rods (422) are provided on both sides of the release plate (42). The control rods (422) move inside the lifting groove (53) and the control groove (54). One end of the release plate (43) is connected to the inside of the ejection device (4) through the elastic rod (431). A push plate (432) is provided at the top of the release plate (43). The extraction device (5) is located inside the ejection device (4). A sliding block (51) is provided below the extraction device (5). A rectangular groove-shaped anti-collision notch (52) is provided on one side of the extraction device (5). A triangular groove is provided inside the extraction device (5), in which the vertical groove is the lifting groove (53) and the oblique groove is the control groove (54). A push block two (55) is provided on one side of the extraction device (5). The push block two (55) is located inside the hydraulic chamber two (551). The hydraulic chamber two (551) is connected to the telescopic pipe two (552) through a pipe. The telescopic pipe two (552) is a nested hollow tubular structure. The other end of the telescopic pipe two (552) is connected to the baffle two (553). One side of the baffle two (553) is connected to the inside of the extraction device (5) through the elastic rod three (554).A push block three (56) is installed inside the lower part of the extraction device (5). The push block three (56) is located inside the hydraulic chamber three (561). The hydraulic chamber three (561) is connected to the telescopic pipe three (562) through a pipe. The other end of the telescopic pipe three (562) is connected to the baffle three (563). Two sets of baffle three (563) are provided, respectively located on both sides of the anti-collision notch (52). The rear of the baffle three (563) is connected to the inner wall of the extraction device (5) through the elastic rod four (564).

2. The controllable ejection device for a CubeSat according to claim 1, characterized in that: One end of drive shaft one (14) is connected to one side of the adapter (3), and one end of drive shaft two (16) is connected to the bottom surface of the catapult (4).

3. The controllable ejection device for a CubeSat according to claim 1, characterized in that: The cube star (2) has a square structure. Solar wings (22) are provided on both sides of the cube star (2), and a cylindrical separator (21) is provided at the top of the cube star (2).

4. The controllable ejection device for a CubeSat according to claim 1, characterized in that: The third drive component (41) can drive the third drive shaft (411) to perform telescopic movements, and the other end of the third drive shaft (411) is connected to the extraction device (5).

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