A space tethered satellite recovery device with self-locking function

Abstract

The present invention relates to the field of satellite recovery technology, and specifically to a space tethered satellite recovery device with a self-locking function. It includes a shell, a rope drum is rotatably arranged in the shell, a rope body is arranged on the rope drum, the outer end of the rope body is connected to the rope drum, and the outer end of the rope body extends out of the shell, and the shell is correspondingly provided with a through hole for passing the rope body, and the rope body is wound around the rope drum; a coil spring is connected between the rope drum and the shell; it also includes a lock part, the lock head can be switched between a first preset position and a second preset position on the shell, and a locking structure is arranged between the lock head and the rope drum; when the lock head moves to the second preset position, the lock head is separated from the rope drum; the lock part also includes a switching switch, and continuously pressing the switching switch can realize the continuous switching of the lock head between the first preset position and the second preset position. It can realize the continuous and stable switching of the rope body hovering and contraction.

Description

Technical Field

[0001] The invention relates to the technical field of satellite recovery, and in particular to a space tethered satellite recovery device with a self-locking function. Background Art

[0002] The space tethered satellite recovery device is a telescopic device with a built-in spring that can be manually stretched. Generally, the rotating wheel is connected to the housing through the coil spring, one end of the rope is wound around the rotating wheel, and an object is hung on the other end of the rope. The rope can be pulled out and automatically recovered through the energy stored in the coil spring.

[0003] The existing rope recovery mechanism can drag the object to drive the rotating wheel to rotate, and the rotating wheel returns to the initial position after releasing the object. This method has disadvantages:

[0004] When the outer end of the rope body is suspended at a certain position, it is necessary to continuously apply external force to the rotating wheel to overcome the elastic force of the coil spring. After the rotating wheel is released, the rope body directly returns to the initial position, resulting in the inability to achieve a steady state and relatively low reliability. Summary of the invention

[0005] In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a space tethered satellite recovery device with a self-locking function, which can improve the stability and reliability of the space tethered satellite recovery operation.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0007] A space tethered satellite recovery device with a self-locking function, comprising a housing, a rope drum rotatably arranged in the housing, a rope body arranged on the rope drum, the inner end of the rope body connected to the rope drum, the outer end of the rope body extending out of the housing, a through hole for passing the rope body arranged on the housing, and the rope body wound around the rope drum;

[0008] A coil spring is connected between the rope drum and the housing; when the rope drum rotates in a direction extending the outer end of the rope body, the coil spring is compressed; when the rope drum rotates in a direction retracting the outer end of the rope body, the coil spring is released;

[0009] The lock part further comprises a lock part, wherein the lock part comprises a lock head arranged on one side of the rope drum, the lock head is slidably mounted on the housing, and 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 is engaged with the rope drum, and the rope drum is circumferentially locked, and a locking structure is provided between the corresponding lock head and the rope drum; when the lock head moves to the second preset position, the lock head is disengaged from the rope drum;

[0010] The lock part also includes a switching switch, and continuously pressing the switching switch can realize continuous switching of the lock head between a first preset position and a second preset position.

[0011] The space tethered satellite recovery device with a self-locking function in the present application has the following principle: pressing the switching switch can enable the lock head to move linearly along the radial direction of the rope drum in the shell to achieve locking and disengagement between the lock head and the rope drum.

[0012] When the lock head and the rope drum 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 suspended at the current position;

[0013] When the lock head and the rope drum are separated, the rope drum is driven to rotate toward the outer end of the rope body due to the action of the coil spring, so that the rope body is reset.

[0014] Therefore, a space tethered satellite recovery device with a self-locking function in the present application can achieve continuous and stable switching between the hovering and contraction of the rope body, and does not require continuous application of additional external force when maintaining the hovering or contracted states, which can improve the stability and reliability of the space tethered satellite recovery operation.

[0015] Furthermore, in the present application, a space tethered satellite recovery device with a self-locking function, the housing comprises an upper shell and a lower shell connected axially, the lower shell is provided with a positioning column, the coil spring is sleeved on the positioning column, the inner end of the coil spring is provided with a positioning fold, the positioning column is provided with an axially extending slot, and the positioning fold is arranged in the slot. As a preferred embodiment of the present application, the outer end of the coil spring is connected to the rope drum. It has the advantage of convenient disassembly and assembly of the coil spring.

[0016] Furthermore, in the present application, a space tethered satellite recovery device with a self-locking function is provided on the rope drum with a spring compartment adapted to the shape of a coil spring, and the coil spring is arranged in the spring compartment; the positioning column axially penetrates into the spring compartment, and the corresponding rope drum is provided with a through hole adapted to the positioning column.

[0017] Furthermore, in the present application, a space tethered satellite recovery device with a self-locking function, the rope disc includes a toothed disc, the outer ring of the toothed disc is provided with a locking groove, the end of the lock head is provided with a locking tooth that matches the locking groove, and the locking tooth and the locking groove correspond to the locking structure. As a preferred solution of the present application, based on the above structure, continuous locking in the circumferential direction can be achieved.

[0018] Furthermore, in the present application, a space tethered satellite recovery device with a self-locking function, the rope drum is provided with an annular rim corresponding to the side wall of the spring compartment, the coil spring is wound around the outside of the annular rim, the toothed disc is provided at one axial end of the annular rim, the outer edge of the toothed disc extends radially outward from the annular rim, and an annular retaining edge is provided at one end of the annular rim away from the toothed disc. As a preferred embodiment of the present application, the outer edge of the toothed disc and the annular retaining edge are used to axially limit the coil spring wound around the outside of the annular rim. The overall structure is compact and good.

[0019] Furthermore, in the present application, a space tethered satellite recovery device with a self-locking function is provided with a slide groove on the lock head, and the slide groove includes a first limit portion, a second limit portion and a transition groove, the rope drum is arranged on the side of the first limit portion away from the second limit portion, and the transition groove connects the first limit portion and the second limit portion; the lock part also includes a limit rod installed on the shell, and the end of the limit rod is arranged to slide in the slide groove; the lock part also includes a spring, which is connected to the lock head, and the spring is used to apply a force to the lock head away from the rope drum; when the lock head is in the first preset position, the second limit portion is in contact with the limit rod, and at this time, the second limit portion is used to clamp the limit rod in the direction of the spring elastic force; when the lock head is in the second preset position, the first limit portion is in contact with the limit rod, and at this time, the first limit portion is used to clamp the limit rod in the direction of the spring elastic force. As a preferred solution of the present application, by pressing the switching switch, the locking head moves, and the end of the limiting rod slides in the slide groove. Due to the action of the spring, the end of the limiting rod finally switches between the first limiting part and the second limiting part, thereby realizing the switching of the locking head between the first preset position and the second preset position to realize the locking and release of the rope reel.

[0020] Furthermore, in the space tethered satellite recovery device with a self-locking function in the present application, the housing is provided with a sliding compartment for storing a lock head, the lock head is slidably arranged in the sliding compartment, and the lock head extends out of the sliding compartment at one end away from the rope drum to form the switching switch. As a preferred solution of the present application, the sliding compartment plays a guiding role, and the switching switch is the tail end of the lock head, which has the advantage of a compact structure.

[0021] Furthermore, in the present application, a space tethered satellite recovery device with a self-locking function, the transition groove includes a first transition groove and a second transition groove, the first transition groove and the second transition groove are respectively connected to the two sides of the first limiting part and the second limiting part to form a circumferential closed shape; the first transition groove is provided with a first non-return step near one end of the second limiting part, and the position of the second limiting part corresponds to the low position of the first non-return step; the second transition groove is provided with a second non-return step near one end of the first limiting part, and the position of the first limiting part corresponds to the low position of the second non-return step; the limit rod is rotatably mounted on the shell. As a preferred embodiment of the present application, during the continuous switching of the lock head from the second preset position to the first preset position, the end of the limit rod performs a circular motion in the same direction in the slide groove from the first limiting part to the first transition groove to the second limiting part to the second transition groove, and the first non-return step and the second non-return step play a non-return role.

[0022] Furthermore, in the present application, a space tethered satellite recovery device with a self-locking function, the first transition groove comprises a first front groove and a first rear groove connected front and rear, the front end of the first front groove is connected to the first limiting portion, and a third non-return step is provided between the rear end of the first front groove and the front end of the first rear groove; the front end of the first rear groove is arranged at a low position of the third non-return step; the second transition groove comprises a second front groove and a second rear groove connected front and rear, the front end of the second front groove is connected to the first limiting portion, and a fourth non-return step is provided between the rear end of the second front groove and the front end of the second rear groove; the front end of the second rear groove is arranged at a high position of the fourth non-return step;

[0023] The first front groove and the second front groove are connected to form a "<" shape, and the first front groove and the second front groove correspond to the two sides of the "<" shape respectively; the first rear groove and the second rear groove are connected to form a "<" shape, and the first rear groove and the second rear groove correspond to the two sides of the "<" shape respectively. As a preferred embodiment of the present application, the first front groove and the second front groove correspond to the two sides of the "<" shape to play a limiting role, which improves the stability of the end of the limiting rod when it is located in the first limiting part; similarly, the first rear groove and the second rear groove correspond to the two sides of the "<" shape to also play a limiting role, which improves the stability of the end of the limiting rod when it is located in the second limiting part.

[0024] Furthermore, in the present application, a space tethered satellite recovery device with a self-locking function, the limit rod includes a cross bar, one end of the cross bar is provided with a connector, the connector is rotatably mounted on the shell, the end of the cross bar away from the connector is provided with a limit head, the limit head is arranged in the slide slot, and the cross bar is above the slide slot; the locking part also includes an elastic pressure plate, one end of the elastic pressure plate is mounted on the shell, and the other end is elastically pressed on the side of the cross bar near the limit head. As a preferred embodiment of the present application, since the limit head moves in the slide slot, it will pass through various non-return steps, that is, the limit head will reciprocate in the depth direction of the slide slot. In order to ensure that the limit head can always be in the slide slot, an elastic pressure plate is provided to press the limit head in the slide slot. The elastic pressure plate has the characteristics of elasticity and can follow the limit head to reciprocate in the depth direction of the slide slot.

[0025] It can be seen from the above technical solution that the present invention has the following beneficial effects:

[0026] The present invention provides a space tethered satellite recovery device with a self-locking function, the principle of which is that pressing a switching switch can enable the lock head to move linearly along the radial direction of the rope drum in a shell to achieve locking and disengagement between the lock head and the rope drum. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is an exploded view of a space tethered satellite recovery device with a self-locking function described in an embodiment of the present application;

[0028] Figure 2 This is a schematic structural diagram of a space tethered satellite recovery device with a self-locking function according to an embodiment of the present application (the upper shell is hidden);

[0029] Figure 3 for Figure 2 A partial enlarged view of the corresponding lock portion;

[0030] Figure 4 This is a schematic diagram of a lock in an embodiment of the present application;

[0031] Figure 5 It is a schematic diagram of a space tethered satellite recovery device with a self-locking function in a locked state according to an embodiment of the present application;

[0032] Figure 6 This is a schematic diagram of a space tethered satellite recovery device with a self-locking function described in an embodiment of the present application in an unlocked state.

[0033] In the figure: 1-housing; 11-through hole; 12-upper housing; 13-lower housing; 131-positioning column; 1311-slot; 14-spring positioning bracket; 15-sliding compartment;

[0034] 2-rope drum; 20-spring chamber; 201-perforation; 21-toothed disc; 211-locking groove; 22-annular surrounding edge; 221-annular retaining edge;

[0035] 3-rope body;

[0036] 4-coil spring; 41-positioning folding edge;

[0037] 5-locking part; 50-sliding groove; 501-first limiting part; 502-second limiting part; 503-transition groove; 5031-first transition groove; 50310-first non-return step; 50311-first front groove; 50312-first rear groove; 50313-third non-return step; 5032-second transition groove; 50320-second non-return step; 50321-second front groove; 50322-second rear groove; 50323-fourth non-return step; 51-locking head; 510-switching switch; 511-locking tooth; 52-limiting rod; 521-cross rod; 522-connecting head; 523-limiting head; 53-spring; 54-elastic pressure plate; 541-pressure plate body; 542-installing head; 543-pressure head. DETAILED DESCRIPTION

[0038] Example

[0039] Combination Figures 1 to 3The space tethered satellite recovery device with a self-locking function comprises a housing 1, a rope drum 2 is rotatably provided in the housing 1, a rope body 3 is provided on the rope drum 2, the inner end of the rope body 3 is connected to the rope drum 2, the outer end of the rope body 3 extends out of the housing 1 for connection with a space satellite, and a through hole 11 for penetrating the body is provided on the housing 1, and the rope body 3 is wound around the rope drum 2;

[0040] A coil spring 4 is connected between the rope drum 2 and the housing 1; when the rope drum 2 rotates in the direction of extending the outer end of the rope body 3, the coil spring 4 is compressed; when the rope drum 2 rotates in the direction of retracting the outer end of the rope body 3, the coil spring 4 is released;

[0041] The lock part 5 also includes a lock head 51 arranged on one side of the rope drum 2, the lock head 51 is slidably mounted on the housing 1, and 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 is engaged with the rope drum 2, and the rope drum 2 is circumferentially locked, and a locking structure is correspondingly provided between the 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, and is in an unlocked state at this time;

[0042] The lock portion 5 further includes a switch 510 , and continuously pressing the switch 510 can enable the lock head 51 to continuously switch between the first preset position and the second preset position.

[0043] The space tethered satellite recovery device with a self-locking function in the present application has the following principle: pressing the switching switch 510 can make the locking head 51 move linearly along the radial direction of the rope drum 2 in the housing 1, so as to realize the locking and disengagement between the locking head 51 and the rope drum 2. When the locking head 51 and the rope drum 2 are locked, the rope body 3 is also locked and cannot be extended or retracted, so that the outer end of the rope body 3 can be kept suspended at the current position; when the locking head 51 and the rope drum 2 are disengaged, the rope drum 2 is driven to rotate in the direction of retracting the outer end of the rope body 3 due to the action of the coil spring 4, so that the rope body 3 is reset. Therefore, the space tethered satellite recovery device with a self-locking function in the present application can realize the continuous and stable switching of the rope body 3 between hovering and retracting, and does not need to continuously apply additional external force when maintaining the two states of hovering or retracting, which can improve the stability and reliability of the space tethered satellite recovery operation.

[0044] In this embodiment, the housing 1 includes an upper shell 12 and a lower shell 13 connected axially, a positioning column 131 is provided on the lower shell 13, the coil spring 4 is sleeved on the positioning column 131, a positioning fold 41 is provided at the inner end of the coil spring 4, an axially extending slot 1311 is provided on the positioning column 131, and the positioning fold 41 is arranged in the slot 1311. The outer end of the coil spring 4 is connected to the rope drum 2. It has the advantage of convenient disassembly and assembly of the coil spring 4.

[0045] In this embodiment, 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 compartment 20, and the rope drum 2 is correspondingly provided with a through hole 201 adapted to the positioning column 131.

[0046] In this embodiment, the rope disc 2 includes 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 511 that matches the locking groove 211, and the locking tooth 511 and the locking groove 211 correspond to the locking structure. Based on the above structure, continuous locking in the circumferential direction can be achieved.

[0047] In this embodiment, the rope drum 2 is provided with an annular rim 22 corresponding to the side wall of the spring chamber 20, the coil spring 4 is wound around the outside of the annular rim 22, the toothed disc 21 is provided 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. The outer edge of the toothed disc 21 and the annular retaining edge 221 are used to axially limit the coil spring 4 wound around the outside of the annular rim 22. The overall structure is compact and good.

[0048] In this embodiment, the housing 1 is provided with a slide bin 15 for accommodating a lock head 51, the lock head 51 is slidably disposed in the slide bin 15, and one end of the lock head 51 away from the rope drum 2 extends out of the slide bin 15 to form the switch 510. The slide bin 15 plays a guiding role, and the switch 510 is the tail end of the lock head 51, which has the advantage of a compact structure.

[0049] In this embodiment, a slide groove 50 is provided on the lock head 51, and the slide groove 50 includes a first limiting portion 501, a second limiting portion 502 and a transition groove 503. The rope drum 2 is arranged on the side of the first limiting portion 501 away from the second limiting portion 502, and the transition groove 503 connects the first limiting portion 501 and the second limiting portion 502; the lock part 5 also includes a limiting rod 52 installed on the shell 1, and the end of the limiting rod 52 is arranged to slide in the slide groove 50; the lock part 5 also includes a spring 53, and the spring 53 The spring 53 is connected to the lock head 51 and is used to apply a force to the lock head 51 in a direction away from the rope drum 2. When the lock head 51 is in the first preset position, the second limiting portion 502 is in contact with the limiting rod 52. At this time, the second limiting portion 502 is used to clamp the limiting rod 52 in the direction of the elastic force of the spring 53. When the lock head 51 is in the second preset position, the first limiting portion 501 is in contact with the limiting rod 52. At this time, the first limiting portion 501 is used to clamp the limiting rod 52 in the direction of the elastic force of the spring 53. Press the switch 510, the lock head 51 moves, and the end of the limiting rod 52 slides in the slide groove 50. Due to the action of the spring 53, the end of the limiting rod 52 finally switches between the first limiting portion 501 and the second limiting portion 502, thereby realizing the switching of the lock head 51 between the first preset position and the second preset position, so as to realize the locking and releasing of the rope drum 2. Specifically, the spring 53 is a compression spring, and two ends of the spring 53 are respectively in contact with the housing 1 and the lock head 51 . A spring positioning bracket 14 is correspondingly provided on the housing 1 , and the spring 53 is arranged on one side of the lock tooth 511 .

[0050] In this embodiment, the transition groove 503 includes a first transition groove 5031 and a second transition groove 5032, and the first transition groove 5031 and the second transition groove 5032 are respectively connected to both sides of the first limiting portion 501 and the second limiting portion 502 to form a circumferentially closed shape;

[0051] The first transition groove 5031 is provided with a first non-return step 50310 at one end near the second limit portion 502, and the position of the second limit portion 502 corresponds to the low position of the first non-return step 50310; the second transition groove 5032 is provided with a second non-return step 50320 at one end near the first limit portion 501, and the position of the first limit portion 501 corresponds to the low position of the second non-return step 50320; the limit rod 52 is rotatably mounted on the housing 1. During the process of the lock head 51 continuously switching from the second preset position to the first preset position, the end of the limit rod 52 performs a circular motion in the same direction in the slide groove 50 from the first limit portion 501 to the first transition groove 5031 to the second limit portion 502 to the second transition groove 5032, and the first non-return step 50310 and the second non-return step 50320 play a non-return role.

[0052] In this embodiment, the first transition groove 5031 includes a first front groove 50311 and a first rear groove 50312 connected front and back, the front end of the first front groove 50311 is connected to the first limiting portion 501, and a third non-return step 50313 is provided between the rear end of the first front groove 50311 and the front end of the first rear groove 50312; the front end of the first rear groove 50312 is set at the low position of the third non-return step 50313; the second transition groove 5032 includes a second front groove 50321 and a second rear groove 50322 connected front and back, the front end of the second front groove 50321 is connected to the first limiting portion 501, and a third non-return step 50313 is provided between the rear end of the first front groove 50311 and the front end of the first rear groove 50312; the front end of the first rear groove 50312 is set at the low position of the third non-return step 50313; the second transition groove 5032 includes a second front groove 50321 and a second rear groove 50322 connected front and back, 1, a fourth check step 50323 is provided between the rear end of the second front groove 50321 and the front end of the second rear groove 50322; the front end of the second rear groove 50322 is arranged at a high position of the fourth check step 50323; the first front groove 50311 and the second front groove 50321 are connected to form a "<" shape, and the first front groove 50311 and the second front groove 50321 correspond to the two sides of the "<" shape respectively; the first rear groove 50312 and the second rear groove 50322 are connected to form a "<" shape, and the first rear groove 50312 and the second rear groove 50322 correspond to the two sides of the "<" shape respectively.

[0053] The first front groove 50311 and the second front groove 50321 correspond to the two sides of the “<” shape to play a limiting role, thereby improving the stability of the end of the limiting rod 52 when it is located in the first limiting portion 501; similarly, the first rear groove 50312 and the second rear groove 50322 correspond to the two sides of the “<” shape to play a limiting role, thereby improving the stability of the end of the limiting rod 52 when it is located in the second limiting portion 502.

[0054] In this embodiment, the limit rod 52 includes a cross bar 521, one end of the cross bar 521 is bent and provided with a connecting head 522, and the connecting head 522 is rotatably installed on the shell 1. The cross bar 521 is bent and provided with a limit head 523 at one end away from the connecting head 522. The limit head 523 is arranged in the slide groove 50, and the cross bar 521 is above the slide groove 50; the locking part 5 also includes an elastic pressure plate 54, one end of the elastic pressure plate 54 is installed on the shell 1, and the other end is elastically pressed on the side of the cross bar 521 near the limit head 523.

[0055] Since the limit head 523 moves in the slide groove 50, it will pass through various non-return steps, that is, the limit head 523 will reciprocate in the depth direction of the slide groove 50. In order to ensure that the limit head 523 can always be in the slide groove 50, an elastic pressure plate 54 is provided to press the limit head 523 in the slide groove 50. The elastic pressure plate 54 has the characteristics of elasticity and can reciprocate in the depth direction of the slide groove 50 with the limit head 523. Specifically, the elastic pressure plate 54 includes a pressure plate body 541, one end of the pressure plate body 541 is bent to provide a mounting head 542, and the other end of the pressure plate body 541 is bent to provide a pressing head 543, and the mounting head 542 is installed on the lower shell 13.

[0056] 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 space tethered satellite recovery device with a self-locking function, characterized in that: The invention comprises a shell (1), a rope drum (2) is rotatably arranged inside the shell (1), a rope body (3) is arranged on the rope drum (2), an inner end of the rope body (3) is connected to the rope drum (2), an outer end of the rope body (3) extends outside the shell (1) for connecting to a space satellite, a through hole (11) for passing the rope body (3) is correspondingly arranged on the shell (1), and the rope body (3) is wound on 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 switching switch (510), and continuous pressing of the switching switch (510) can achieve continuous switching of the lock head (51) between a first preset position and a second preset position; The rope disc (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 (511) that matches the locking groove (211) in a concave-convex manner, and the locking tooth (511) and the locking groove (211) correspond to the locking structure; The lock head (51) is provided with a slide groove (50), the slide groove (50) comprises a first limiting portion (501), a second limiting portion (502) and a transition groove (503), the rope drum (2) is arranged on a side of the first limiting portion (501) away from the second limiting portion (502), and the transition groove (503) connects the first limiting portion (501) and the second limiting portion (502); The locking portion (5) further comprises a limiting rod (52) mounted on the housing (1), the end of the limiting rod (52) being arranged to slide in the sliding groove (50); The locking portion (5) further comprises a spring (53), wherein the spring (53) is connected to the locking head (51), and the spring (53) is used to apply a force to the locking head (51) in a direction away from the rope reel (2); When the lock head (51) is in the first preset position, the second limiting portion (502) fits the limiting rod (52), and at this time, the second limiting portion (502) is used to clamp the limiting rod (52) in the elastic force direction of the spring (53); When the lock head (51) is in the second preset position, the first limiting portion (501) fits the limiting rod (52), and at this time, the first limiting portion (501) is used to clamp the limiting rod (52) in the elastic force direction of the spring (53); The housing (1) is provided with a sliding bin (15) for accommodating a lock head (51), the lock head (51) being slidably disposed in the sliding bin (15), and the end of the lock head (51) away from the rope drum (2) extending out of the sliding bin (15) to form the switching switch (510); The transition groove (503) comprises a first transition groove (5031) and a second transition groove (5032), wherein the first transition groove (5031) and the second transition groove (5032) are respectively connected to two sides of the first limiting portion (501) and the second limiting portion (502) to form a circumferentially closed shape; A first non-return step (50310) is provided at one end of the first transition groove (5031) close to the second limiting portion (502), and the position of the second limiting portion (502) corresponds to the lower position of the first non-return step (50310); A second non-return step (50320) is provided at one end of the second transition groove (5032) close to the first limiting portion (501), and the position of the first limiting portion (501) corresponds to the lower position of the second non-return step (50320); The limiting rod (52) is rotatably mounted on the housing (1); The first transition groove (5031) comprises a first front groove (50311) and a first rear groove (50312) connected front and rear, the front end of the first front groove (50311) is connected to the first limiting portion (501), and a third non-return step (50313) is provided between the rear end of the first front groove (50311) and the front end of the first rear groove (50312); the front end of the first rear groove (50312) is arranged at a low position of the third non-return step (50313); The second transition groove (5032) comprises a second front groove (50321) and a second rear groove (50322) connected front and rear, the front end of the second front groove (50321) is connected to the first limiting portion (501), and a fourth non-return step (50323) is provided between the rear end of the second front groove (50321) and the front end of the second rear groove (50322); the front end of the second rear groove (50322) is arranged at a high position of the fourth non-return step (50323); The first front groove (50311) and the second front groove (50321) are connected to form a "<" shape, and the first front groove (50311) and the second front groove (50321) correspond to two sides of the "<" shape respectively; The first rear groove (50312) and the second rear groove (50322) are connected to form a "<" shape, and the first rear groove (50312) and the second rear groove (50322) correspond to two sides of the "<" shape respectively; The limiting rod (52) comprises a cross rod (521), one end of the cross rod (521) is provided with a connecting head (522), the connecting head (522) is rotatably mounted on the housing (1), one end of the cross rod (521) away from the connecting head (522) is provided with a limiting head (523), the limiting head (523) is arranged in the slide groove (50), and the cross rod (521) is above the slide groove (50); The locking portion (5) further comprises an elastic pressing plate (54), one end of which is mounted on the housing (1), and the other end of which is elastically pressed onto a side of the cross bar (521) near the limit head (523).

2. The space tethered satellite recovery device with self-locking function 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. The space tethered satellite recovery device with self-locking function 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. The space tethered satellite recovery device with self-locking function according to claim 3, 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).

Images