A bistable double-triggered tethered satellite recovery mechanism

Abstract

The present invention relates to the technical field of satellite recovery, and a bistable double-triggered tethered satellite recovery mechanism, which comprises a housing. A rope reel is rotatably arranged inside the housing. A rope body is arranged on the rope reel. The inner end of the rope body is connected to the rope reel, and the outer end of the rope body extends out of the housing. A through hole for passing the rope body is arranged on the corresponding housing, and the rope body is wound around the rope reel; A torsion spring is connected between the rope reel and the housing; The locking part is also included. The locking part includes a lock head arranged on one side of the rope reel. The lock head is slidably installed on the housing and can be switched between a first preset position and a second preset position on the housing. The locking part also includes a first switching switch. Pressing the first switching switch moves the lock head to the first preset position. A second switching switch is also included. Pressing the second switching switch can reset the lock head from the first preset position to the second preset position. It can improve the stability and reliability of the space tethered satellite recovery operation.

Description

Technical Field

[0001] The present invention relates to the technical field of satellite recovery, and particularly to a bistable double-trigger tethered satellite recovery mechanism. Background Art

[0002] A space tethered satellite recovery device is a telescopic device with a built-in clockwork spring that can be manually stretched. Generally, a runner is rotationally connected to a housing through a winding spring. One end of a rope is wound around the runner, and an object is hung at the other end of the rope. Through the energy stored in the winding spring, the rope can be pulled out and automatically recovered.

[0003] The existing tethered recovery mechanism can drag an object to drive the runner to rotate. After releasing the object, the runner returns to its initial position. This method has drawbacks:

[0004] When the outer end of the rope hovers at a certain position, an external force needs to be continuously applied to the runner to overcome the elastic force of the winding spring. After releasing the runner, the rope body directly returns to its initial position, resulting in the inability to achieve a stable state and relatively low reliability. Summary of the Invention

[0005] To overcome the deficiencies of the above-mentioned prior art, the present invention provides a bistable double-trigger tethered satellite recovery mechanism, which can improve the stability and reliability of space tethered satellite recovery operations.

[0006] To achieve the above object, the present invention is realized through the following technical solutions:

[0007] A bistable double-trigger tethered satellite recovery mechanism includes a housing. A rope reel is rotatably arranged in the housing. A rope body is arranged on the rope reel. The inner end of the rope body is connected to the rope reel, and the outer end of the rope body extends out of the housing. A through hole for passing the rope body is provided on the corresponding housing, and the rope body is wound around the rope reel;

[0008] A winding spring is connected between the rope reel and the housing; when the rope reel rotates in the direction of extending the outer end of the rope body, the winding spring is compressed; when the rope reel rotates in the direction of recovering the outer end of the rope body, the winding spring is released;

[0009] It further includes a locking part. The locking part includes a lock head arranged on one side of the rope reel. The lock head is slidably installed on the housing. The lock head can be switched between a first preset position and a second preset position on the housing. When the lock head moves to the first preset position, the lock head meshes with the rope reel, and the circumferential direction of the rope reel is locked. A locking structure is provided between the corresponding lock head and the rope reel; when the lock head moves to the second preset position, the lock head disengages from the rope reel;

[0010] The locking part further includes a first switching switch. Pressing the first switching switch causes the lock head to move to the first preset position. It further includes a second switching switch. Pressing the second switching switch can cause the lock head to reset from the first preset position to the second preset position.

[0011] The usage method of a bistable double-triggered tethered satellite recovery mechanism in this application is as follows: Pressing the first switching switch can cause the lock head to move linearly in the radial direction of the rope reel within the housing to the first preset position, so as to achieve the locking between the lock head and the rope reel. When the lock head and the rope reel are locked, the rope body is also locked and cannot be extended or retracted, and the outer end of the rope body can be kept hovering at the current position. Pressing the second switching switch, the lock head can be reset from the first preset position to the second preset position, then the lock head is disengaged from the rope reel. At this time, due to the action of the torsion spring, the rope reel is driven to rotate in the direction of retracting towards the outer end of the rope body, so that the rope body is reset.

[0012] Therefore, a bistable double-triggered tethered satellite recovery mechanism of this application can achieve continuous and stable switching between the hovering and contraction of the rope body, and does not require continuous additional external force when maintaining the two states of hovering or contraction, which can improve the stability and reliability of the space tethered satellite recovery operation.

[0013] Furthermore, for a bistable double-triggered tethered satellite recovery mechanism in this application, the housing includes an upper shell and a lower shell axially connected. The lower shell is provided with a positioning post, the torsion spring is sleeved on the positioning post, the inner end of the torsion spring is provided with a positioning flange, the positioning post is provided with an axially extending card slot, and the positioning flange is arranged in the card slot. As a preferred solution of this application, the outer end of the torsion spring is connected to the rope reel. It has the advantage of being convenient for disassembling and assembling the torsion spring.

[0014] Furthermore, for a bistable double-triggered tethered satellite recovery mechanism in this application, the rope reel is provided with a spring bin adapted to the shape of the torsion spring, and the torsion spring is arranged in the spring bin;

[0015] The positioning post axially penetrates into the spring bin, and the corresponding rope reel is provided with a through hole adapted to the positioning post.

[0016] Furthermore, for a bistable double-triggered tethered satellite recovery mechanism in this application, the rope reel includes a toothed disc, a locking groove is arranged on the outer circle of the toothed disc, the end of the lock head is provided with locking teeth that are in concave-convex fit with the locking groove, and the locking teeth and the locking groove form a corresponding locking structure. As a preferred solution of this application, based on the above structure, circumferential continuous locking can be achieved.

[0017] Furthermore, for a bistable double-triggered tethered satellite recovery mechanism in this application, corresponding to the side wall of the spring bin, the rope reel is provided with an annular edge, the torsion spring is wound outside the annular edge, the toothed disc is arranged at one axial end of the annular edge, the outer edge of the toothed disc extends radially outside the annular edge, and an annular retaining edge is arranged at one end of the annular edge away from the toothed disc. As a preferred solution of this application, the outer edge of the toothed disc and the annular retaining edge are used for axially limiting the torsion spring wound outside the annular edge. The overall structure has good compactness.

[0018] Further, in a bistable double-triggered tethered satellite recovery mechanism in the present application, the locking part includes a limiting component. The limiting component includes a slidably arranged limiting slider and a first elastic member connected to the limiting slider. A limiting chuck is provided at the front end of the limiting slider;

[0019] When the lock head is in the second preset position, the limiting chuck is at the front end of the lock head in the moving direction towards the first preset position;

[0020] A first inclined guide surface and a second inclined guide surface corresponding to each other are respectively provided on the limiting chuck and the lock head;

[0021] A positioning convex part is provided on the side of the lock head, and the second inclined guide surface is arranged at one end of the positioning convex part close to the rope reel;

[0022] During the process of the lock head moving towards the first preset position, the second inclined guide surface is used to squeeze the first inclined guide surface, so that the limiting slider moves towards the outside of the lock head; when the lock head moves to the first preset position, the limiting chuck is at the rear end of the positioning convex part, and the first elastic member is used to push the limiting slider to move to block the path of the positioning convex part moving towards the second preset position. As a preferred solution of the present application, the limiting slider is used to lock the lock head in the first preset position to prevent the lock head from moving towards the second preset position.

[0023] Further, in a bistable double-triggered tethered satellite recovery mechanism in the present application, a sliding bin for accommodating the lock head is provided on the housing. The lock head is slidably arranged in the sliding bin, and one end of the lock head away from the rope reel extends out of the outside of the sliding bin to form a first switching switch. As a preferred solution of the present application, the sliding bin plays a guiding role. The first switching switch is the tail end of the lock head, which has the advantage of compact structure.

[0024] Further, in a bistable double-triggered tethered satellite recovery mechanism in the present application, it further includes a second elastic member connected to the lock head. The second elastic member is used to apply an elastic force to the lock head to reset it towards the second preset position.

[0025] Further, in a bistable double-triggered tethered satellite recovery mechanism in the present application, a second switching switch is slidably arranged on one side of the lock head close to the positioning convex part. The sliding direction of the second switching switch is parallel to that of the lock head. A third inclined guide surface corresponding to the first inclined guide surface is provided at the front end of the second switching switch;

[0026] When the lock head is in the first preset position, when the second switching switch is pressed, the third inclined guide surface is used to squeeze the first inclined guide surface, so that the limiting slider moves until the limiting chuck moves out of the outside of the positioning convex part;

[0027] A third elastic member is connected to the second switching switch. When the second switching switch is released, the third elastic member is used to push the second switching switch to reset. As a preferred solution of the present application, when the limiting chuck removes from the outside of the positioning convex part, due to the action of the second elastic member, the lock head can be reset to the second preset position.

[0028] Further, in a bistable double-triggered tethered satellite recovery mechanism in the present application, the limiting component and / or the third elastic member is a compression spring. A spring groove for accommodating the compression spring is provided on the corresponding lock head and / or the second switching switch, and a spring limiting protrusion is provided on the housing. One end of the compression spring is pressed on the spring limiting protrusion, and the other end is pressed on the end of the spring groove. As a preferred solution of the present application, the elastic member has the advantage of compact structure based on the above structure setting.

[0029] From the above technical solutions, it can be seen that the present invention has the following beneficial effects:

[0030] The present invention provides a bistable double-triggered tethered satellite recovery mechanism, which can realize the continuous and stable switching of the hovering and retraction of the tether. When maintaining the two states of hovering or retraction, no continuous additional external force needs to be applied, which can improve the stability and reliability of the space tethered satellite recovery operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic structural diagram of a bistable double-triggered tethered satellite recovery mechanism in an embodiment of the present application;

[0032] Figure 2 It is an exploded view of the components of a bistable double-triggered tethered satellite recovery mechanism in an embodiment of the present application;

[0033] Figure 3 It is a schematic internal structure diagram of a bistable double-triggered tethered satellite recovery mechanism in an embodiment of the present application;

[0034] Figure 4 It is a schematic structural diagram of the locking part in an embodiment of the present application (reset state);

[0035] Figure 5 It is a schematic structural diagram of the locking part in an embodiment of the present application (the lock head is in the first preset position)

[0036] Figure 6 It is a schematic structural diagram of the locking part in an embodiment of the present application (the state when the second switching switch is pressed)

[0037] In the figure: 1 - housing; 11 - through hole; 12 - upper shell; 13 - lower shell; 131 - positioning post; 1311 - card slot; 15 - sliding bin; 16 - spring limiting protrusion;

[0038] 2 - rope reel; 20 - spring bin; 201 - perforation; 21 - toothed disc; 211 - locking groove; 22 - annular edge; 221 - annular flange;

[0039] 3 - rope body;

[0040] 4 - torsion spring; 41 - positioning fold;

[0041] 5 - Locking part; 51 - Lock head; 510 - First switching switch; 5101 - Lock teeth; 511 - Positioning convex part; 5110 - Second inclined guide surface; 52 - Second switching switch; 521 - Third inclined guide surface; 53 - Limit component; 531 - Limit slider; 5311 - Limit clamping head; 53110 - First inclined guide surface; 532 - First elastic part; 54 - Third elastic part; 55 - Spring groove; 56 - Second elastic part. Detailed implementation mode

[0042] Embodiment

[0043] Combined with Figures 1-3 A bistable double - trigger cable - based satellite recovery mechanism as shown, including a housing 1. A cable reel 2 is rotatably arranged inside the housing 1. A cable body 3 is provided on the cable reel 2. The inner end of the cable body 3 is connected to the cable reel 2, and the outer end of the cable body 3 extends outside the housing 1. A through - hole 11 for passing the cable body 3 is provided on the corresponding housing 1. The cable body 3 is wound around the cable reel 2.

[0044] A torsion spring 4 is connected between the cable reel 2 and the housing 1. When the cable reel 2 rotates in the direction of extending the outer end of the cable body 3, the torsion spring 4 is compressed. When the cable reel 2 rotates in the direction of retracting the outer end of the cable body 3, the torsion spring 4 is released.

[0045] Combined with Figures 4-6 It also includes a locking part 5. The locking part 5 includes a lock head 51 arranged on one side of the cable reel 2. The lock head 51 is slidably installed on the housing 1. The lock head 51 can be switched between a first preset position and a second preset position on the housing 1. When the lock head 51 moves to the first preset position, the lock head 51 meshes with the cable reel 2, and the circumferential locking of the cable reel 2 is realized. A locking structure is provided between the corresponding lock head 51 and the cable reel 2. When the lock head 51 moves to the second preset position, the lock head 51 disengages from the cable reel 2.

[0046] The locking part 5 also includes a first switching switch 510. As shown in Figure 5 , when the first switching switch 510 is pressed, the lock head 51 moves to the first preset position. As shown in Figure 6 , it also includes a second switching switch 52. When the second switching switch 52 is pressed, the lock head 51 can be reset from the first preset position to the second preset position.

[0047] The usage method of a bistable double-triggered tethered satellite recovery mechanism in this application is as follows: Pressing the first switching switch 510 can cause the locking head 51 to move linearly in the radial direction of the rope reel 2 within the housing 1 to the first preset position, so as to achieve the locking between the locking head 51 and the rope reel 2. When the locking head 51 and the rope reel 2 are locked, the rope body 3 is also locked and cannot extend or contract, and the outer end of the rope body 3 can be kept hovering at the current position. Pressing the second switching switch 52, the locking head 51 can be reset from the first preset position to the second preset position, then the locking head 51 is disengaged from the rope reel 2. At this time, due to the action of the torsion spring 4, the rope reel 2 is driven to rotate in the direction of retracting towards the outer end of the rope body 3, so that the rope body 3 is reset. Therefore, a bistable double-triggered tethered satellite recovery mechanism in this application can achieve continuous and stable switching between the hovering and contraction of the rope body 3, and does not require continuous additional external force when maintaining the two states of hovering or contraction, which can improve the stability and reliability of the space tethered satellite recovery operation.

[0048] In this embodiment, the housing 1 includes an upper shell 12 and a lower shell 13 which are axially connected. A positioning post 131 is provided on the lower shell 13. The torsion spring 4 is sleeved on the positioning post 131. A positioning flange 41 is provided at the inner end of the torsion spring 4. An axially extending card slot 1311 is provided on the positioning post 131, and the positioning flange 41 is arranged in the card slot 1311. The outer end of the torsion spring 4 is connected to the rope reel 2. It has the advantage of being convenient for disassembling and assembling the torsion spring 4.

[0049] In this embodiment, a spring chamber 20 adapted to the shape of the torsion spring 4 is provided on the rope reel 2, and the torsion spring 4 is arranged in the spring chamber 20; the positioning post 131 axially penetrates into the spring chamber 20, and a through hole 201 adapted to the positioning post 131 is provided on the corresponding rope reel 2.

[0050] In this embodiment, the rope reel 2 includes a toothed disk 21. A locking groove 211 is provided on the outer circle of the toothed disk 21. A locking tooth 5101 which is in concave-convex fit with the locking groove 211 is provided at the end of the locking head 51, and the locking tooth 5101 and the locking groove 211 form a corresponding locking structure. Based on the above structure, circumferential continuous locking can be achieved.

[0051] In this embodiment, corresponding to the side wall of the spring chamber 20, a ring-shaped border 22 is provided on the rope reel 2. The torsion spring 4 is wound around the outside of the ring-shaped border 22. The toothed disk 21 is arranged at one axial end of the ring-shaped border 22, and the outer edge of the toothed disk 21 extends out of the radial outside of the ring-shaped border 22. A ring-shaped stop edge 221 is provided at one end of the ring-shaped border 22 away from the toothed disk 21. The outer edge of the toothed disk 21 and the ring-shaped stop edge 221 are used for axially limiting the torsion spring 4 wound around the outside of the ring-shaped border 22. The overall structure has good compactness.

[0052] In this embodiment, the locking part 5 includes a limiting component 53. The limiting component 53 includes a slidably arranged limiting slider 531 and a first elastic member 532 connected to the limiting slider 531. A limiting chuck 5311 is provided at the front end of the limiting slider 531; when the lock head 51 is in the second preset position, the limiting chuck 5311 is at the front end of the lock head 51 in the moving direction towards the first preset position; a first inclined guide surface 53110 and a second inclined guide surface 5110 corresponding to each other are respectively provided on the limiting chuck 5311 and the lock head 51; a positioning convex part 511 is provided on the side surface of the lock head 51, and the second inclined guide surface 5110 is arranged at one end of the positioning convex part 511 close to the rope reel 2.

[0053] During the process of the lock head 51 moving towards the first preset position, the second inclined guide surface 5110 is used to squeeze the first inclined guide surface 53110, so that the limiting slider 531 moves towards the outside of the lock head 51; when the lock head 51 moves to the first preset position, the limiting chuck 5311 is at the rear end of the positioning convex part 511, and the first elastic member 532 is used to push the limiting slider 531 to move to a position where the limiting chuck 5311 blocks the path of the positioning convex part 511 moving towards the second preset position. The limiting slider 531 is used to lock the lock head 51 in the first preset position to prevent the lock head 51 from moving towards the second preset position. Specifically, the sliding direction of the limiting slider 531 is perpendicular to the sliding direction of the lock head 51. The first elastic member 532 is a compression spring, which abuts against one end of the first elastic member 532 away from the limiting chuck 5311, and a corresponding sliding groove is provided on the housing 1 corresponding to the limiting slider 531. The positioning convex part 511 is in the shape of a right-angled triangular prism. The second inclined guide surface 5110 corresponds to the side surface where the hypotenuse of the right-angled triangle is located. One right-angled side of the right-angled triangle is integrally connected to the side wall of the lock head 51, and the side surface where the other right-angled side is located is used for interlocking with the limiting chuck 5311.

[0054] In this embodiment, a sliding bin 15 for accommodating the lock head 51 is provided on the housing 1. The lock head 51 is slidably arranged in the sliding bin 15, and one end of the lock head 51 away from the rope reel 2 extends out of the outside of the sliding bin 15 to form a first switching switch 510. Among them, the sliding bin 15 plays a guiding role. The first switching switch 510 is the tail end of the lock head 51 and has the advantage of a compact structure.

[0055] In this embodiment, a second elastic member 56 connected to the lock head 51 is further included. The second elastic member 56 is used to apply an elastic force to the lock head 51 to reset it towards the second preset position.

[0056] In this embodiment, the second switch 52 is slidably arranged on the side of the lock head 51 near the positioning protrusion 511, the sliding direction of the second switch 52 is parallel to the lock head 51, and the front end of the second switch 52 is provided with a third inclined guide surface 521 corresponding to the first inclined guide surface 53110; when the lock head 51 is in the first preset position, the second switch 52 is pressed, and the third inclined guide surface 521 is used to squeeze the first inclined guide surface 53110, so that the limit slider 531 moves to the outside of the limit clamp 5311 moving out of the positioning protrusion 511; the second switch 52 is connected to the third elastic member 54, and the third elastic member 54 is used to push the second switch 52 to reset when the second switch 52 is released. When the limit clamp 5311 is removed from the outside of the positioning protrusion 511, due to the action of the second elastic member 56, the lock head 51 can be reset to the second preset position.

[0057] In this embodiment, the limiting assembly 53 and / or the third elastic member 54 are compression springs, and the corresponding lock head 51 and / or the second switch 52 are provided with a spring slot 55 for accommodating the compression spring, and the housing 1 is provided with a spring limiting protrusion 16, one end of the compression spring is pressed on the spring limiting protrusion 16, and the other end is pressed on the end of the spring slot 55. The specific limiting assembly 53 and the third elastic member 54 are both compression springs, and the elastic member arranged based on the above structure has the advantage of compact structure.

[0058] The technical principles of the present invention are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without creative work, and these methods will fall within the scope of protection of the present invention.

Claims

1. A bistable double-trigger tethered satellite recovery mechanism, characterized in that: The invention comprises a housing (1), a rope drum (2) being rotatably arranged inside the housing (1), a rope body (3) being arranged on the rope drum (2), an inner end of the rope body (3) being connected to the rope drum (2), an outer end of the rope body (3) extending outside the housing (1), a through hole (11) for passing the rope body (3) being arranged on the housing (1), and the rope body (3) being wound around the rope drum (2); A coil spring (4) is connected between the rope drum (2) and the housing (1); when the rope drum (2) rotates in a direction in which the outer end of the rope body (3) is extended, the coil spring (4) is compressed; when the rope drum (2) rotates in a direction in which the outer end of the rope body (3) is retracted, the coil spring (4) is released; The lock part (5) further comprises a lock part (5), the lock part (5) comprising a lock head (51) arranged on one side of the rope drum (2), the lock head (51) being slidably mounted on the housing (1), the lock head (51) being switchable between a first preset position and a second preset position on the housing (1), when the lock head (51) moves to the first preset position, the lock head (51) meshes with the rope drum (2), the rope drum (2) is circumferentially locked, and a locking structure is provided between the corresponding lock head (51) and the rope drum (2); when the lock head (51) moves to the second preset position, the lock head (51) is disengaged from the rope drum (2); The lock portion (5) further comprises a first switching switch (510) and a second switching switch (52); when the first switching switch (510) is pressed, the lock head (51) moves to a first preset position; when the second switching switch (52) is pressed, the lock head (51) can be reset from the first preset position to the second preset position; The locking portion (5) comprises a limiting assembly (53), wherein the limiting assembly (53) comprises a limiting slider (531) which is slidably arranged and a first elastic member (532) connected to the limiting slider (531), and a limiting clamping head (5311) is provided at the front end of the limiting slider (531); When the lock head (51) is at the second preset position, the limit clamping head (5311) is at the front end of the lock head (51) in the moving direction toward the first preset position; The limit clamp (5311) and the lock head (51) are respectively provided with a first inclined guide surface (53110) and a second inclined guide surface (5110) corresponding to each other; A positioning protrusion (511) is provided on the side of the lock head (51), and the second inclined guide surface (5110) is arranged at an end of the positioning protrusion (511) close to the rope drum (2); During the movement of the lock head (51) toward the first preset position, the second inclined guide surface (5110) is used to press the first inclined guide surface (53110) so that the limiting slider (531) moves toward the outside of the lock head (51); when the lock head (51) moves to the first preset position, the limiting clamp (5311) is at the rear end of the positioning protrusion (511), and the first elastic member (532) is used to push the limiting slider (531) to move to the path where the limiting clamp (5311) blocks the positioning protrusion (511) from moving toward the second preset position.

2. A bistable double-trigger tethered satellite recovery mechanism according to claim 1, characterized in that: The housing (1) comprises an upper shell (12) and a lower shell (13) which are axially connected, the lower shell (13) being provided with a positioning column (131), the coil spring (4) being sleeved on the positioning column (131), the inner end of the coil spring (4) being provided with a positioning fold (41), the positioning column (131) being provided with an axially extending slot (1311), the positioning fold (41) being arranged in the slot (1311).

3. A bistable double-trigger tethered satellite recovery mechanism according to claim 2, characterized in that: The rope drum (2) is provided with a spring compartment (20) adapted to the shape of the coil spring (4), and the coil spring (4) is arranged in the spring compartment (20); The positioning column (131) axially penetrates into the spring chamber (20), and a through hole (201) adapted to the positioning column (131) is provided on the corresponding rope drum (2).

4. A bistable double-trigger tethered satellite recovery mechanism according to claim 3, characterized in that: The rope reel (2) comprises a toothed disc (21), the outer ring of the toothed disc (21) is provided with a locking groove (211), the end of the locking head (51) is provided with a locking tooth (5101) that matches the locking groove (211) in a concave-convex manner, and the locking tooth (5101) and the locking groove (211) correspond to the locking structure.

5. A bistable double-trigger tethered satellite recovery mechanism according to claim 4, characterized in that: Corresponding to the side wall of the spring chamber (20), the rope drum (2) is provided with an annular rim (22), the coil spring (4) is wound around the outside of the annular rim (22), the toothed disc (21) is arranged at one axial end of the annular rim (22), the outer edge of the toothed disc (21) extends radially outward of the annular rim (22), and an annular retaining edge (221) is provided at one end of the annular rim (22) away from the toothed disc (21).

6. A bistable double-trigger tethered satellite recovery mechanism according to claim 1, characterized in that: The housing (1) is provided with a sliding bin (15) for accommodating a lock head (51); the lock head (51) is slidably arranged in the sliding bin (15); an end of the lock head (51) away from the rope drum (2) extends out of the sliding bin (15) to form the first switching switch (510).

7. A bistable double-trigger tethered satellite recovery mechanism according to claim 6, characterized in that: It also comprises a second elastic member (56) connected to the lock head (51), wherein the second elastic member (56) is used to apply an elastic force to the lock head (51) to reset it towards a second preset position.

8. The bistable double-trigger tethered satellite recovery mechanism according to claim 7, characterized in that: The second switch (52) is slidably arranged on a side of the lock head (51) near the positioning protrusion (511), the sliding direction of the second switch (52) is parallel to the lock head (51), and the front end of the second switch (52) is provided with a third inclined guide surface (521) corresponding to the first inclined guide surface (53110); When the lock head (51) is in the first preset position, the second switch (52) is pressed, and the third inclined guide surface (521) is used to press the first inclined guide surface (53110), so that the limit slider (531) moves to the outside of the limit clamping head (5311) and moves out of the positioning protrusion (511); A third elastic member (54) is connected to the second switch (52); when the second switch (52) is released, the third elastic member (54) is used to push the second switch (52) to reset.

9. A bistable double-trigger tethered satellite recovery mechanism according to claim 8, characterized in that: The limiting assembly (53) and / or the third elastic member (54) is a compression spring, and the corresponding lock head (51) and / or the second switch (52) are provided with a spring groove (55) for accommodating the compression spring. The housing (1) is provided with a spring limiting protrusion (16), and one end of the compression spring is pressed onto the spring limiting protrusion (16), and the other end is pressed onto the end of the spring groove (55).

Images