Rotor wing folding mechanism for rocket recovery

Abstract

The utility model discloses a rotor wing folding mechanism for rocket recovery, which effectively realizes the purpose of recovering a rocket booster, and comprises a fixing ring fixedly connected with the rocket booster, a plurality of rotatable first connecting arms are arranged on the outer side of the fixing ring, and a plurality of second connecting arms are arranged on the outer side of the fixing ring. A second connecting arm is arranged on the side, away from the fixing ring, of each first connecting arm, a rotor wing mechanism is arranged on the side, away from the first connecting arm, of each second connecting arm, and a first folding mechanism used for controlling the first connecting arm to rotate is arranged at the position, connected with the fixing ring, of each first connecting arm. The rotor wing folding device is novel in structure, ingenious in conception and easy and convenient to operate, storage of the rotor wing is effectively facilitated, the stability between the rotor wing and the fixing ring is improved, the safety performance of the device is improved, the blades can be folded, the better folding effect is achieved, and the rotor wing folding device is suitable for popularization and application. And a better posture adjusting effect is realized.

Description

TECHNICAL FIELD

[0001] The utility model belongs to aerospace technology field relates to a rocket recycling is folded mechanism of rotor. BACKGROUND

[0002] With the rapid development of aerospace technology, the efficient control of rocket launch cost and the sustainable use of resources become the core problem of the industry. Most of the traditional rockets are disposable, resulting in high economic cost and space garbage problem. In recent years, although part of the rocket boosters realizes preliminary recovery through complex thruster return technology, the precision control, safety, technical cost and dependence on external energy in the recovery process are still the key factors restricting its wide application. Therefore, there is an urgent need for a rocket recycling rotor folding mechanism that can significantly reduce the recovery difficulty and cost to facilitate the recovery of rocket boosters. SUMMARY

[0003] In view of the above problems, the utility model provides a rocket recycling rotor folding mechanism, which solves the problems in the prior art.

[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0005] A rotor folding mechanism for rocket recovery, comprising a fixed ring fixedly connected with a rocket booster, a plurality of rotatable first connecting arms are arranged on the outer side of the fixed ring, a second connecting arm is arranged on the side of each first connecting arm away from the fixed ring, a rotatable rotor mechanism is arranged on the side of each second connecting arm away from the first connecting arm, a first folding mechanism for controlling the rotation of the first connecting arm is arranged at the position where each first connecting arm is connected with the fixed ring, and a protective cover is detachably connected to the outer side of the fixed ring.

[0006] Preferably, the folding mechanism comprises a first connecting plate fixedly connected with the first connecting plate, a second connecting plate rotatably connected to the upper side of the first connecting plate, a third connecting plate slidably arranged on the inner side of the fixed ring is arranged on the upper side of the second connecting plate, and the upper part of one end of the first connecting arm close to the fixed ring is rotatably connected with the fixed ring.

[0007] Preferably, a first connecting hole is formed in the middle of each third connecting plate, a second connecting hole is formed in the outer periphery of the fixed ring corresponding to the position of each first connecting hole, and a protective pin is fixedly connected in the inner part of the protective cover corresponding to the position of each second connecting hole.

[0008] Preferably, the rotor mechanism comprises a motor fixedly connected with the second connecting arm, an output end of the motor is rotationally connected with a power shaft, an outer side of the power shaft is fixedly connected with a first connecting sleeve, a second connecting sleeve is arranged between the power shaft and the connecting sleeve, and the outer sides of the first connecting sleeve and the second connecting sleeve are fixedly connected with blades.

[0009] Preferably, the outer side of the second connecting sleeve is fixedly connected with a transmission block, a folding groove is formed in a side wall of the first connecting sleeve, and a limiting block is rotationally connected to the upper side and the lower side of the lower end of the folding groove.

[0010] Preferably, the lower end of the power shaft is fixedly connected with a fairing.

[0011] Compared with the prior art, the rotor mechanism has the following beneficial effects:

[0012] 1. The first connecting arm and the second connecting arm are obliquely arranged, the length of the first connecting arm and the second connecting arm can be increased as much as possible under the condition that the height of the fixing ring is constant, and the rotor mechanism can be away from the fixing ring, and longer blades can be used.

[0013] 2. The folding mechanism can limit the rotation angle of the first connecting arm relative to the fixing ring, and the connecting strength between the first connecting arm and the fixing ring is increased. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic view of the protective cover in a non-detached state in the utility model.

[0015] Figure 2 It is a schematic view of the unfolded structure of the first connecting arm and the second connecting arm in the utility model.

[0016] Figure 3 It is a schematic view of the structure of the fixing ring in the utility model.

[0017] Figure 4 It is a schematic view of the position of the first connecting sleeve in the utility model.

[0018] Figure 5 It is a schematic view of the position of the folding groove in the utility model.

[0019] Figure 6 It is a schematic view of the position of the folding groove in the utility model. Figure 3

[0020] ​In the diagram: 1. Fixing ring; 2. First connecting arm; 3. Second connecting arm; 4. Rotor mechanism; 5. First folding mechanism; 6. Protective cover; 7. First connecting plate; 8. Second connecting plate; 9. Third connecting plate; 10. First connecting hole; 11. Second connecting hole; 12. Motor; 13. Power shaft; 14. First connecting sleeve; 15. Second connecting sleeve; 16. Blade; 17. Transmission block; 18. Folding groove; 19. Limiting block; 20. Limiting spring; 21. Fairing. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] The following is in conjunction with the appendix Figures 1 to 6 The specific embodiments of this utility model will be described in further detail.

[0023] Depend on Figures 1 to 6 As shown, this utility model includes a fixed ring 1 fixedly connected to a rocket booster. In order to achieve the purpose of recovering the rocket booster, the outer side of the fixed ring 1 is provided with multiple rotatable first connecting arms 2. Each first connecting arm 2 is provided with a second connecting arm 3 on the side away from the fixed ring 1. Each second connecting arm 3 is provided with a rotatable rotor mechanism 4 on the side away from the first connecting arm 2. Each first connecting arm 2 is provided with a first folding mechanism 5 for controlling the rotation of the first connecting arm 2 at the position where it is connected to the fixed ring 1. A protective cover 6 is detachably connected to the outer side of the fixed ring 1.

[0024] It should be noted that multiple storage slots are provided on the outer side of the fixed ring 1. The first connecting arm 2 and the second connecting arm 3 can be stored inside the storage slots. After the protective cover 6 is disengaged from the fixed ring 1, the first connecting arm 2 will rotate relative to the fixed ring 1, thereby unfolding the device. When the first connecting arm 2 and the second connecting arm 3 are stored in the storage slots, they are tilted when viewed from the side, which can increase the total length between the first connecting arm 2 and the second connecting arm 3. In addition, a power battery connected to the rotor mechanism 4 and a controller for controlling the rotor mechanism 4 are slidably arranged inside the fixed ring 1. The first connecting arm 2 and the second connecting arm 3 are fixedly connected in this embodiment. However, it should be understood that in another embodiment, the second connecting arm 3 and the first connecting arm 2 can rotate relative to each other, thereby adjusting the angle of the rotor mechanism 4 and making it easier to adjust the attitude of the rocket thruster.

[0025] In use, during the rocket launch process, the rocket booster is used to provide power, and after the booster is separated from the rocket head, the protective cover 6 is disengaged from the fixed ring 1, and the disengagement includes but is not limited to: 1. The protective cover 6 includes a plurality of protective plates, each of which is connected with the fixed ring 1 by an electromagnet, and the protective plates fall under the action of wind and gravity after the electromagnet is powered off; 2. The protective cover 6 includes a plurality of protective plates, each of which is connected with the fixed ring 1 by a fixed buckle, and a trigger fuse is arranged between each protective plate and the fixed ring 1, which can make the trigger fuse internally powered to generate high temperature and disconnect the buckle, thereby releasing the cooperation between the protective plate and the fixed ring 1.

[0026] After the cooperation between the protective cover 6 and the fixed ring 1 is released, the first connecting arm 2 rotates relative to the fixed ring 1, thereby driving the second connecting arm 3 to rotate relative to the fixed ring 1, so that the rotor mechanism 4 can move away from the fixed ring 1 and be unfolded, and then starting the rotor mechanism 4 can recycle the gravitational potential energy of the rocket booster through the rotor mechanism 4. Under the action of the controller, the rotor mechanism 4 can be started when the rocket booster is at a suitable height to adjust the attitude of the rocket booster and slow down.

[0027] Further, as shown in Figures 1 to 6 In order to facilitate the storage of the rotor and increase the stability between the rotor and the fixed ring 1, the folding mechanism includes a first connecting plate 7 fixedly connected with the first connecting plate 7, and a second connecting plate 8 rotatably connected to the upper side of the first connecting plate 7. The upper side of the second connecting plate 8 is provided with a third connecting plate 9 which can slide up and down inside the fixed ring 1, and the upper part of the first connecting arm 2 close to the fixed ring 1 is rotatably connected with the fixed ring 1.

[0028] Further, as shown in Figures 1 to 6 In order to increase the safety performance of the device, a first connecting hole 10 is formed in the middle of each third connecting plate 9, a second connecting hole 11 is formed in the outer periphery of the fixed ring 1 corresponding to the position of each first connecting hole 10, and a protective pin is fixedly connected to the inside of the protective cover 6 corresponding to the position of each second connecting hole 11.

[0029] In use, when the protective cover 6 is disengaged from the protective ring and falls off at high altitude, the protective pin falls off with the protective cover, at this time the first connecting hole 10 and the second connecting hole 11 are no longer limited by the clamping of the protective pin, the third connecting plate 9 can slide downward relative to the fixed ring 1, and then under the action of the second connecting plate 8, the first connecting plate 7 can rotate relative to the fixed ring 1 with the first connecting arm 2, so that the first connecting wall is unfolded.

[0030] The upper end of the third connecting plate 9 is provided with a sliding block, which can limit the distance of the third connecting plate 9 moving downward relative to the fixed ring 1.

[0031] Further, as shown in Figures 1 to 6 In order to enable the folding of the blades 16, the rotor mechanism 4 comprises a motor 12 fixedly connected with the second connecting arm 3, the output end of the motor 12 is rotationally connected with a power shaft 13, the outer side of the power shaft 13 is fixedly connected with a first connecting sleeve 14, a second connecting sleeve 15 is arranged between the power shaft 13 and the connecting sleeve, and the outer side of the first connecting sleeve 14 and the second connecting sleeve 15 is fixedly connected with a blade 16;

[0032] Further, as shown in Figures 1 to 6 In order to achieve a better folding effect, the outer side of the second connecting sleeve 15 is fixedly connected with a transmission block 17, the side wall of the first connecting sleeve 14 is provided with a folding groove 18, and the upper and lower sides of the lower end of the folding groove 18 are each rotationally connected with a limiting block 19, and each limiting block 19 is provided on the side close to the first connecting sleeve 14 with a limiting spring 20;

[0033] It should be noted that a torsional spring (not shown in the figure) is arranged between the power shaft 13 and the second connecting sleeve 15, so that the second connecting sleeve 15 has a tendency to rotate clockwise relative to the power shaft 13, i.e. the transmission block 17 has a tendency to move downward along the folding groove 18;

[0034] It should be understood that during the separation of the rocket booster and the rocket head, both are in the ascending stage, so after the first connecting arm 2 and the second connecting arm 3 are rotated 90° relative to the fixed ring 1, the second connecting sleeve 15 and the blades 16 will rotate counterclockwise relative to the power shaft 13 under the combined action of the torsional spring, gravity and high-altitude air resistance, so that the transmission block 17 moves downward along the folding groove 18, and when the transmission block 17 passes through the limiting block 19, the two limiting springs 20 will be compressed, and after the limiting block 19 passes through the limiting block 19, the limiting spring 20 will pop out the limiting block 19 to support the transmission block 17, thereby fixing the first connecting sleeve 14 and the second connecting sleeve 15, and then under the action of the motor 12, the power shaft 13, the first connecting sleeve 14 and the second connecting sleeve 15 can be rotated together to adjust the posture of the fixed ring 1 and the rocket booster;

[0035] Further, as shown in Figures 1 to 6 In order to achieve a better posture adjustment effect, the lower end of the power shaft 13 is fixedly connected with a fairing 21;

[0036] In use, the airflow passing through the blades 16 can be more stable through the fairing 21.

[0037] In use, during rocket launch, the rocket booster provides power. After the booster separates from the rocket head, the protective cover 6 disengages from the fixed ring 1. After the protective cover 6 and the fixed ring 1 are disengaged, the first connecting arm 2 rotates relative to the fixed ring 1, thereby driving the second connecting arm 3 to rotate relative to the fixed ring 1. This allows the rotor mechanism 4 to move away from the fixed ring 1 and unfold. Then, starting the rotor mechanism 4 allows the gravitational potential energy of the rocket booster to be recovered. Under the control of the controller, the rotor mechanism 4 can be activated when the rocket booster is at a suitable height to adjust the attitude and decelerate the rocket booster.

[0038] This utility model has a novel structure, ingenious design, and simple and convenient operation. Through this design, the purpose of recovering rocket boosters can be effectively achieved, the rotor can be easily stored, the stability between the rotor and the fixed ring 1 is increased, the safety performance of the device is improved, the blades 16 can be folded, and a better folding effect and attitude adjustment effect are achieved.

[0039] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A rotor folding mechanism for rocket recovery, comprising a fixed ring fixedly connected with a rocket booster, characterized in that: The outer side of the fixed ring is provided with a plurality of rotatable first connecting arms, each first connecting arm is provided with a second connecting arm away from one side of the fixed ring, each second connecting arm is provided with a rotatable rotor mechanism away from one side of the first connecting arm, each first connecting arm is provided with a first folding mechanism for controlling the rotation of the first connecting arm at the position connected with the fixed ring, and the outer side of the fixed ring is detachably connected with a protective cover.

2. The rotor folding mechanism for a rocket according to claim 1, characterized in that: The folding mechanism comprises a first connecting plate fixedly connected with the first connecting plate, the upper side of the first connecting plate is rotatably connected with a second connecting plate, the upper side of the second connecting plate is provided with a third connecting plate which can slide up and down inside the fixed ring, and the upper part of one end of the first connecting arm close to the fixed ring is rotatably connected with the fixed ring.

3. The rotor folding mechanism for a rocket according to claim 2, characterized in that: The middle part of each third connecting plate is provided with a first connecting hole, the outer periphery of the fixed ring is provided with a second connecting hole corresponding to the position of each first connecting hole, and the inner side of the protective cover is fixedly connected with a protective pin corresponding to the position of each second connecting hole.

4. The rotor folding mechanism for rocket recovery as claimed in claim 1, wherein: The rotor mechanism comprises a motor fixedly connected with the second connecting arm, the output end of the motor is rotatably connected with a power shaft, the outer side of the power shaft is fixedly connected with a first connecting sleeve, a second connecting sleeve is arranged between the power shaft and the connecting sleeve, and the outer sides of the first connecting sleeve and the second connecting sleeve are fixedly connected with blades.

5. The rotor folding mechanism for a rocket according to claim 4, characterized in that: The outer side of the second connecting sleeve is fixedly connected with a transmission block, the side wall of the first connecting sleeve is provided with a folding groove, the upper and lower sides of the lower end of the folding groove are each rotatably connected with a limiting block, and each limiting block is provided with a limiting spring away from one side of the first connecting sleeve.

6. The rotor folding mechanism for a rocket according to claim 4, characterized in that: The lower end of the power shaft is fixedly connected with a fairing.

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