CN113911405A - Space repeated locking system - Google Patents

Abstract

The invention provides a space repeated locking system which comprises a base, a driving device, two linkage groups and a mounting plate, wherein the driving device is arranged on the base and is provided with a driving part; the two linkage groups are symmetrically arranged on the base, each linkage group comprises a first sliding block connected with the driving part and two second sliding blocks respectively connected with the first sliding blocks, the two first sliding blocks have the freedom degree of moving in the opposite direction or the back direction along a second preset path, the two second sliding blocks in the same linkage group have the freedom degree of moving in the opposite direction or the back direction along a first preset path, and the second sliding blocks are also provided with matching parts; the mounting panel for install in the satellite, the bottom of mounting panel be equipped with be used for with the locking groove of cooperation portion joint. The space repeated locking system provided by the invention has the advantages of better synchronism, quick response and higher precision; realizes repeated locking action and can be used for a plurality of times.

Description

Space repeated locking system

Technical Field

The invention belongs to the technical field of aerospace, and particularly relates to a space repeated locking system.

Background

The satellite can be competent for more diversified on-orbit tasks, thereby attracting the attention of a plurality of related scientific research personnel at home and abroad. When the satellite performs different specific tasks in orbit, the satellite needs to be switched between a connection state and a separation state with a load cabin of the spacecraft.

When the satellite is connected with a load bin of a spacecraft, the locking is carried out through a disposable locking structure, and a plurality of locking devices are arranged at the butt joint part of the locking structure and the spacecraft on the satellite so as to realize stable locking of the satellite; when unlocking, the unlocking is usually realized by adopting an explosive bolt, and the unlocking mode can only realize a one-time locking and unlocking task, cannot be used repeatedly and has higher cost; and the precision of the locking device is often lower, and the synchronism of a plurality of locking devices cannot be ensured.

Disclosure of Invention

The embodiment of the invention provides a space repeated locking system, which aims to realize high-precision locking of a satellite in space, can be repeatedly used, reduces the cost and improves the locking synchronism.

In order to achieve the purpose, the invention adopts the technical scheme that: there is provided an aerospace rekeying system comprising:

a base;

the driving device is arranged on the base and is provided with a driving part;

the two linkage groups are symmetrically arranged on the base and comprise first sliders connected with the driving part and two second sliders respectively connected with the first sliders, the two first sliders have freedom degrees of moving in a reverse direction or a back direction along a second preset path, the two second sliders in the same linkage group have freedom degrees of moving in a reverse direction or a back direction along a first preset path, the first preset path is respectively vertical to the second preset path and the up-down direction, and the second sliders are further provided with matching parts; and

the mounting plate is used for being mounted on a satellite, and a locking groove used for being clamped with the matching part is formed in the bottom of the mounting plate;

when the driving part drives the two first sliding blocks to move back to back, the two second sliding blocks in the same linkage group move back to back, and the matching part is close to the locking groove and realizes clamping matching; when the driving part drives the two first sliding blocks to move in opposite directions, the two second sliding blocks in the linkage group move in opposite directions, the matching part is far away from the locking groove, and clamping is released.

In one possible implementation, the driving device includes:

the screw rod is rotationally connected with the base, the axial direction of the screw rod extends along the first preset path, and the axial direction of the screw rod forms a symmetrical shaft between the two linkage groups;

the nut is sleeved on the screw rod to form the driving part; and

and the power mechanism is arranged on the base and used for driving the screw rod to rotate.

In a possible implementation manner, the space repeated locking system further includes a link mechanism respectively disposed between the first slider and the driving portion, and between the second slider and the first slider, the link mechanism includes a connecting rod, and a fixing shaft respectively rotatably connected to two ends of the connecting rod, the fixing shaft is inserted into the driving portion, the first slider or the second slider, and an axial direction of the fixing shaft extends in an up-down direction.

In a possible implementation manner, a locking part is convexly arranged at the bottom of the mounting plate, the locking groove is arranged on the locking part, and the locking parts correspond to the second sliding blocks one by one;

the base is provided with a fixing block in one-to-one correspondence with the locking part, the fixing block is located at the bottom of the locking part and is provided with an arc-shaped guide surface, all the fixing blocks are provided with circle centers of the guide surfaces which are coincided, and the locking part is provided with a fitting surface which can be fitted with the guide surfaces.

In some embodiments, the top of the fixing block is further provided with a positioning column, and the locking portion is provided with a positioning hole corresponding to the positioning column.

In some embodiments, a buffer spring is connected between the fixed block and the second slider, and an axial direction of the buffer spring is parallel to the first preset path.

In some embodiments, the second slider comprises:

the block body is arranged on the base in a sliding mode, and the matching part is arranged on one side, facing the locking groove, of the block body;

the push rod is in sliding fit with the block body, a first limiting step and a second limiting step are respectively arranged at two ends of the push rod, the first limiting step is positioned at one end close to the connecting rod, a protruding part protrudes out of the first limiting step, and the protruding part is rotatably connected with the connecting rod through the fixed shaft; and

the elastic piece is arranged between the first limiting step and the block body and has pretightening force for enabling the first limiting step to be far away from the block body.

In a possible implementation manner, a first slide rail extending along the first preset path is provided on the base, and the driving portion is in sliding fit with the first slide rail;

and/or the presence of a gas in the gas,

and a second sliding rail extending along a second preset path is arranged on the base, and the first sliding block is in sliding fit with the second sliding rail.

In one possible implementation, the space repeat locking system further comprises a rebound assembly, the rebound assembly comprising:

the fixed rod is fixedly arranged on the base, and a sliding groove is coaxially arranged in the fixed rod;

the bottom of the jacking plate is provided with a sliding rod in sliding fit with the sliding groove, and the jacking plate is positioned below the mounting plate; and

the return spring is sleeved on the sliding rod, one end of the return spring is abutted to the bottom of the sliding groove, the other end of the return spring is abutted to the bottom of the jacking plate, and the return spring has a pretightening force which enables the jacking plate to be far away from the fixed rod.

In some embodiments, the central ridge of the jacking plate forms a hemispherical jacking block that can be point contacted with the mounting plate.

In the embodiment of the application, compared with the prior art, the aerospace repeated locking system drives the linkage group to move through the driving device, so that the second sliding blocks are driven, the two first sliding blocks are connected with the driving part, and each first sliding block is also connected with the two second sliding blocks, so that the four second sliding blocks can be driven to synchronously move when the driving device is started, the synchronism is better, the response is rapid, and the precision is higher; drive the interlock through drive arrangement and organize, repeatable cooperation portion that drives on the second slider is close to or keeps away from the locking groove, realizes repeated locking action, but repetitious usage compares in disposable locking structure reduce cost.

Drawings

Fig. 1 is a first schematic view of a main structure (pop-up state) of the space repeated locking system provided in the embodiment of the present invention;

fig. 2 is a first schematic top view of the space repeated locking system according to the embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is an enlarged view of the portion C of FIG. 3;

FIG. 5 is a schematic cross-sectional view taken along line B-B of FIG. 2;

fig. 6 is a schematic top view structural diagram of the aerospace repeatedly locking system provided by the embodiment of the invention (the mounting plate and the rebound assembly are not assembled);

fig. 7 is a schematic view of a second schematic view of the aerospace repeated locking system (locking state) according to the embodiment of the present invention;

fig. 8 is a schematic top view structural diagram of the aerospace rekeying system provided by the embodiment of the invention (the mounting plate and the rebound assembly are not assembled).

Description of reference numerals:

10-a base; 11-fixing block; 12-a guide surface; 13-a positioning column; 14-a buffer spring; 15-a mounting seat; 16-a first slide rail; 17-a second slide rail; 18-a stabilizing spring;

20-a power mechanism; 21-a motor; 22-a reducer;

30-a drive device; 31-a screw rod; 32-a nut;

40-secondary action group; 41-a first slider; 411-rotational position; 42-a second slider; 421-a mating portion; 422-block body; 423-push rod; 424-an elastic member; 425-a first limit step; 426-a second limit step; 427-an extension;

50-mounting a plate; 51-a locking groove; 52-a locking portion; 53-mating surface; 54-positioning holes;

60-a rebound assembly; 61-a fixing rod; 611-a chute; 62-a jacking plate; 63-a return spring; 64-a slide bar; 65-jacking block;

70-a linkage mechanism; 71-a connecting rod; 72-fixed axis.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the embodiments of the present application, the term "upper" and the term "lower" are only for the intuitive direction in fig. 1, and do not represent the real use direction.

Referring to fig. 1 to 8 together, the aerospace rekeying system of the present invention will now be described.

Referring to fig. 1 and 7, the space repeated locking system includes a base 10, a driving device 30, two linkage groups 40 and a mounting plate 50, wherein the driving device 30 is disposed on the base 10, and the driving device 30 has a driving part; the two linkage groups 40 are symmetrically arranged on the base 10, each linkage group 40 comprises a first slider 41 connected with the driving part and two second sliders 42 respectively connected with the first slider 41, the two first sliders 41 have the freedom degree of moving in the opposite direction or the back direction along a second preset path, the two second sliders 42 in the same linkage group 40 have the freedom degree of moving in the opposite direction or the back direction along a first preset path, the first preset path is respectively vertical to the second preset path and the up-down direction, and the second sliders 42 are further provided with matching parts 421; the mounting plate 50 is used for mounting on a satellite, and the bottom of the mounting plate 50 is provided with a locking groove 51 for clamping with the matching part 421;

when the driving part drives the two first sliding blocks 41 to move back to back, the two second sliding blocks 42 in the same linkage group 40 move back to back, the matching part 421 is close to the locking groove 51, and clamping matching is realized; when the driving portion drives the two first sliders 41 to move towards each other, the two second sliders 42 in the same linkage group 40 move towards each other, the matching portion is far away from the locking groove 51, and the clamping is released. In practical use, the aerospace repeated locking system provided in this embodiment, the base 10 includes the driving device 30 disposed on the base 10, the linkage group 40 is both installed in a loading bin of a spacecraft, the mounting plate 50 is installed on a satellite separately, when the satellite executes a task, the satellite floats in space together with the mounting plate 50, after the execution action is completed, the manipulator on the spacecraft grabs the satellite, the mounting plate 50 on the satellite advances corresponding to the position of the base 10, so that the locking groove 51 on the mounting plate 50 and the matching portion 421 are at the same vertical height, the driving device 30 is opened, the driving portion on the driving device 30 drives the two first sliders 41 to move away from each other along a second preset path, the two second sliders 42 connected to one first slider 41 also move away from each other along the first preset path, the matching portion 421 on the second slider 42 gradually engages in the locking groove 51 to complete locking of the satellite, the manipulator loosens the grip on the satellite. When the satellite needs to be released, the driving portion on the driving device 30 drives the two first sliding blocks 41 to approach each other along the second preset path, the two second sliding blocks 42 connected to one first sliding block 41 also approach each other along the first preset path, the matching portion 421 on the second sliding block 42 gradually leaves away from the locking groove 51, and the satellite can be separated from the load compartment of the spacecraft by means of the power system of the satellite.

Compared with the prior art, the space repeated locking system drives the linkage group 40 to move through the driving device 30, finally drives the second sliding blocks 42, the two first sliding blocks 41 are connected with the driving part, and each first sliding block 41 is also connected with the two second sliding blocks 42, so that the four second sliding blocks 42 can be driven to synchronously move when the driving device 30 is started, the synchronism is better, the reaction is rapid, and the precision is higher; the driving device 30 drives the linkage group 40 to repeatedly drive the matching part 421 on the second slider 42 to be close to or far away from the locking groove 51, so that repeated locking action is realized, and the locking mechanism can be used for multiple times, and the cost is reduced compared with a disposable locking structure.

In some embodiments, a specific implementation of the driving device 30 can be configured as shown in fig. 6 and 8. Referring to fig. 6 and 8, the driving device 30 includes a screw rod 31, a nut 32 and a power mechanism 20, the screw rod 31 is rotatably connected to the base 10, an axial direction of the screw rod 31 extends along a first preset path, and the axial direction of the screw rod 31 forms a symmetry axis between two linkage sets 40; the nut 32 is sleeved on the screw rod 31 to form a driving part; the power mechanism 20 is disposed on the base and is used for driving the screw rod 31 to rotate. When the screw rod 31 on the driving device 30 rotates forwards, the nut 32 is driven to move along the axial direction of the screw rod 31, the first sliding blocks 41 are far away from the screw rod 31 (the two first sliding blocks 41 are far away from each other), and the two second sliding blocks 42 are far away from each other; when the screw 31 is reversely rotated, the nut 32 moves in the reverse direction, the first slider 41 approaches the screw 31 (the two first sliders 41 approach each other), and the two second sliders 42 approach each other.

Specifically, the power mechanism 20 includes a plurality of motors 21 and a speed reducer 22, the speed reducer 22 is in transmission connection with the motors 21, and an output shaft of the speed reducer 22 is fixedly connected with the screw rod 31. By arranging the speed reducer 22, the rotating speed of the motor 21 can be reduced, the torque can be increased, the inertia of the load can be reduced, the low-speed rotation of the screw rod 31 can be driven, and the damage of a link mechanism caused by the fact that the screw rod 31 rotates too fast can be prevented.

As an alternative embodiment, the driving device 30 may also be a motor driving a screw rod to rotate, wherein the screw threads of one part and the other part of the screw rod are opposite, the axial direction of the screw rod is parallel to the second preset path, and the two parts are both sleeved with nuts fixedly connected to the first sliding block.

In some embodiments, a modified embodiment of the space repeat locking system described above may be configured as shown in fig. 1, 3, 5, 6-8. Referring to fig. 1, 3, 5, 6 to 8, the space repeated locking system further includes a link mechanism 70 respectively disposed between the first slider 41 and the driving portion, and between the second slider 42 and the first slider 41, the link mechanism 70 includes a connecting rod 71, and a fixing shaft 72 respectively rotatably connected to two ends of the connecting rod 71, the fixing shaft 72 is inserted into the driving portion, the first slider 41, or the second slider 42, and an axial direction of the fixing shaft 72 extends in an up-down direction. When the link mechanism 70 is disposed between the first slider 41 and the driving part, the first slider 41 and the driving part are provided with fixing shafts 72, and the two fixing shafts 72 are connected by a connecting rod 71; when the link mechanism 70 is disposed between the first slider 41 and the second slider 42, the first slider 41 and the second slider 42 are both provided with a fixed shaft 72, and the two fixed shafts 72 are connected by a connecting rod 71.

Referring to fig. 6, when the screw rod 31 rotates forward, the connecting rod 71 between the first slider 41 and the nut 32 pushes the first slider 41 to move away from the screw rod 31, and the connecting rod 71 between the first slider 41 and the second slider 42 pushes the two second sliders 42 to move away from each other; when the screw 31 rotates reversely, the connecting rod 71 between the first slider 41 and the nut 32 pulls the first slider 41 to approach the screw 31, and the connecting rod 71 between the first slider 41 and the second slider 42 pulls the two second sliders 42 to approach each other.

The connection between the driving part and the first slider 41 and the connection between the first slider 41 and the second slider 42 are realized through the link mechanism 70, the reaction is rapid, the rapid locking can be realized, and the synchronism is high; and the connecting mechanism 70 is simple, has lower cost and can meet the locking rigidity.

In some embodiments, a modified embodiment of the mounting plate 50 described above may be configured as shown in fig. 1, 3, 5, and 7. Referring to fig. 1, 3, 5 and 7, a locking portion 52 is convexly provided at the bottom of the mounting plate 50, a locking groove 51 is provided at the locking portion 52, and the locking portions 52 correspond to the second sliders 42 one to one; the base 10 is provided with fixing blocks 11 corresponding to the locking portions 52 one by one, the fixing blocks 11 are located at the bottoms of the locking portions 52 and are provided with arc-shaped guide surfaces 12, the circle centers of the guide surfaces 12 on all the fixing blocks 11 are overlapped, and the locking portions 52 are provided with matching surfaces 53 capable of being attached to the guide surfaces 12. For example, there are four fixed blocks 11, guide surface 12 on four fixed blocks 11 is in same conical surface, then the centre of a circle of guide surface 12 is the center of conical surface, through setting up guide surface 12, when manipulator centre gripping satellite drove mounting panel 50 down, the guide effect of accessible guide surface 12, guarantee that the locking portion 52 of mounting panel 50 bottom corresponds with cooperation portion 421 positions on the second slider 42, and because guide surface 12 of four fixed blocks 11 is in same conical surface, can be automatic to central direction, guarantee mounting panel 50's position precision, and then improve locking effect.

In some embodiments, a modified embodiment of the locking groove 51 may be configured as shown in fig. 3 and 5. Referring to fig. 3 and 5, the bottom surface of the locking groove 51 is a slope, and the slope gradually inclines upward in a direction away from the second slider 42. The bottom surface in the locking groove 51 is an inclined surface, so that the success rate of the matching part 421 entering the locking groove 51 can be increased, and the accuracy of locking implementation is ensured.

Alternatively, the bottom surface of the locking groove 51 may be a horizontal surface, but the inclined surface is provided at a position of the horizontal plate near the opening, so as to ensure that the matching portion 421 smoothly enters the locking groove 51 to achieve locking.

In some embodiments, a modified embodiment of the fixing block 11 may adopt a structure as shown in fig. 3 and 5. Referring to fig. 3 and 5, the top of the fixing block 11 is further provided with a positioning post 13, and the locking portion 52 is provided with a positioning hole 54 corresponding to the positioning post 13. Through setting up the locating hole 54 cooperation on reference column 13 and the locking portion 52, when mounting panel 50 descends, reference column 13 stretches into in the locating hole 54, prevents to rock after mounting panel 50 reachs the preset position, and the cooperation portion 421 on the guarantee second slider 42 can get into locking groove 51 smoothly and realize the locking action.

Specifically, the top of the positioning column 13 is a conical structure with a small top and a large bottom, and the bottom of the positioning hole 54 on the corresponding locking portion 52 is also a conical space with a small top and a large bottom, so that the positioning column 13 and the positioning hole 54 are convenient to match, the coaxial effect of the positioning column 13 and the positioning hole 54 is ensured, and when the mounting plate 50 is dislocated, the position of the mounting plate 50 can be finely adjusted, and the locking precision is ensured.

In some embodiments, a modified embodiment of the second slider 42 may be configured as shown in fig. 6 and 8. Referring to fig. 6 and 8, a buffer spring 14 is connected between the fixed block 11 and the second slider 42, and an axial direction of the buffer spring 14 is parallel to the first predetermined path. When the second slider 42 moves along the first predetermined path, the buffer spring 14 is pressed when approaching the fixed block 11, and the buffer spring 14 is extended when departing from the fixed block 11, so that the buffer spring 14 can stabilize the moving process of the second slider 42, and reduce the rigid impact between the second slider 42 and the fixed block 11 or between the second slider 42 and the locking portion 52.

In some embodiments, a modified embodiment of the first slider 41 may be configured as shown in fig. 1 to 8. Referring to fig. 1 to 8, the first slider 41 is provided with a rotation position 411 towards two sides of the two second sliders 42, respectively, the fixed shaft 72 is inserted into the rotation position 411, and the rotation position 411 is used for limiting a rotation angle of the connecting rod 71. The opening angle of the rotating position 411 can be set through the rotating angle of the connecting rod 71, when the connecting rod 71 rotates to the limit, the connecting rod 71 is abutted to the side wall of the rotating position 411 to prevent the connecting rod 71 from continuing to rotate, so that the rotating angle of the connecting rod 71 is limited, and the situation that the distance between the two second sliding blocks 42 is too small or the distance between the two second sliding blocks 42 is too large can be effectively prevented.

In some embodiments, a specific implementation of the second slider 42 can be configured as shown in FIG. 4. Referring to fig. 4, the second sliding block 42 includes a block 422, a pushing rod 423 and an elastic member 424, the block 422 is slidably disposed on the base 10, and the matching portion 421 is disposed on a side of the block 422 facing the locking groove 51; the push rod 423 is in sliding fit with the block 422, a first limit step 425 and a second limit step 426 are respectively arranged at two ends of the push rod 423, the first limit step 425 is positioned at one end close to the connecting rod 71, a protruding part 427 protrudes from the first limit step 425, and the protruding part 427 is rotatably connected with the connecting rod 71 through a fixed shaft 72; the elastic member 424 is disposed between the first limiting step 425 and the block 422, and the elastic member 424 has a pre-tightening force for moving the first limiting step 425 away from the block 422. The push rod 423, the first limit step 425 and the second limit step 426 form a transverse I-shaped structure, and an I-shaped space is also arranged on the corresponding block 422 to enable the push rod 423 to slide.

Alternatively, the resilient member 424 may be a belleville spring.

When the first sliding block 41 is far away from the screw rod 31, the second sliding block 42 is driven to move close to the locking part 52, at this time, the first limiting step 425 extrudes the elastic part 424, and the elastic part 424 extrudes the block body 422 to enable the block body 422 to move towards the locking part 52; when the first sliding block 41 is close to the screw rod 31, the second sliding block 42 is driven to move away from the locking portion 52, at this time, the second limiting step 426 extrudes the block 422, and the block 422 moves away from the locking portion 52. Under the condition that the elastic piece 424 is not arranged, the connecting rod 71 is rigidly driven to compress, and errors exist in machining and assembling; when the second sliding block 42 is close to the locking part 52, errors between processing and assembling are overcome by the connection of the elastic piece 424 and the push rod 423 and the micro-deformation of the elastic piece 424, so that the locking forces of the four second sliding blocks 42 are consistent, the speed and the rigidity during locking and separating are greatly improved, the response time is short, and the stability is high.

It should be noted that the sliding distance between the push rod 423 and the block 422 is short, and the stroke is only the change of the length when the elastic member 424 is compressed or extended.

In some embodiments, a modified embodiment of the base 10 can be constructed as shown in fig. 6 and 8. Referring to fig. 6 and 8, the base 10 is further provided with a mounting seat 15, one end of the screw rod 31 is in transmission connection with the power mechanism 20, and the other end of the screw rod is in rotational connection with the mounting seat 15. One end of the screw rod 31 is driven to rotate by the power mechanism 20, and the other end of the screw rod is rotatably connected with the mounting seat 15, so that the stable rotation effect of the screw rod 31 is optimized.

In some embodiments, a modified embodiment of the base 10 can be constructed as shown in fig. 6 and 8. Referring to fig. 6 and 8, the base 10 is provided with a first slide rail 16 extending along a first predetermined path, and the driving portion is slidably engaged with the first slide rail 16; and/or a second slide rail 17 extending along a second preset path is arranged on the base 10, and the first slide block 41 is in sliding fit with the second slide rail 17. The nut 32 is also matched with the first slide rail 16 in the process of moving on the screw rod 31, so that the stable movement of the nut 32 is ensured, and the stable locking is ensured; the first slide rail 16 also guides the moving path of the nut 32 to prevent the nut 32 from being dislocated.

When the first sliding block 41 moves along with the nut 32, the first sliding block 41 is matched with the second sliding rail 17, so that the first sliding block 41 is ensured to move stably, and stable locking is ensured; the second slide rail 17 also guides the moving path of the first slider 41 to prevent the first slider 41 from being dislocated.

Further, the second slide rail 17 protrudes from the base 10, and can be combined with the rotation position 411 on the first slide block 41 to prevent the distance between the two second slide blocks 42 from being too small, so that when the distance between the two second slide blocks 42 is too small, the second slide blocks 42 abut against the second slide rail 17, and cannot move continuously.

In some embodiments, a modified implementation of the connection between the two first sliders 41 may adopt a structure as shown in fig. 6 and 8. Referring to fig. 6 and 8, the two first sliders 41 are connected with the stabilizing spring 18 in front, and the axial direction of the stabilizing spring 18 extends along a second predetermined path. When the first sliding blocks 41 are far away from the screw rod 31, the two first sliding blocks 41 are far away from each other, and the stabilizing spring 18 is stretched; when the first sliding block 41 is close to the screw rod 31, the two first sliding blocks 41 are close to each other, the stabilizing spring 18 is compressed, and due to the fact that the connecting rod 71 is connected with the first sliding blocks 41 in a rigid mode, through the arrangement of the stabilizing spring 18, the moving path of the first sliding blocks 41 is enabled to be more stable, and machining and assembling errors can be reduced.

In some embodiments, a modified embodiment of the space repeat locking system described above may be configured as shown in fig. 1, 3, 5, and 7. Referring to fig. 1, 3, 5 and 7, the space repeated locking system further includes a rebound assembly 60, the rebound assembly 60 includes a fixing rod 61, a jacking plate 62 and a return spring 63, the fixing rod 61 is fixedly arranged on the base 10, and a sliding groove 611 is coaxially arranged in the fixing rod 61; the bottom of the jacking plate 62 is provided with a sliding rod 64 matched with the sliding groove 611, and the jacking plate 62 is positioned below the mounting plate 50; the return spring 63 is sleeved on the sliding rod 64, one end of the return spring 63 abuts against the bottom of the sliding groove 611, the other end of the return spring 63 abuts against the bottom of the jacking plate 62, and the return spring 63 has a pre-tightening force for making the jacking plate 62 away from the fixing rod 61. When the satellite has a power system, the satellite is separated from the spacecraft through self power after unlocking; the recoil assembly 60 is required to eject the satellite when the satellite itself has no power system.

When the mounting plate 50 is locked, the mounting plate 50 presses the jacking plate 62, and the jacking plate 62 presses the return spring 63; when the mounting plate 50 needs to be released, the return spring 63 rebounds to eject the jacking plate 62, and the jacking plate 62 ejects the mounting plate 50, so that the mounting plate 50 has an initial speed of separation, and the satellite on the mounting plate 50 can be ejected quickly.

In some embodiments, a modified embodiment of the jacking plates 62 may be configured as shown in fig. 1, 3, 5, and 7. Referring to fig. 1, 3, 5 and 7, the center of the jacking plate 62 is raised to form a hemispherical jacking block 65, and the jacking block 65 can be point contacted with the mounting plate 50. Through the point contact between the jacking block 65 and the mounting plate 50, when popping up the mounting plate 50, the stress that can be better through the point contact guarantees that when the mounting plate 50 popped up, is a little atress, and this point is the central point of mounting plate 50, can guarantee that the mounting plate 50 pops up the track accuracy, can not lead to the satellite to bounce partially because of the return spring 63 elasticity difference of different positions when the quantity of return spring 63 is more.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. An aerospace rekeying system, comprising:

a base;

the driving device is arranged on the base and is provided with a driving part;

the two linkage groups are symmetrically arranged on the base and comprise first sliders connected with the driving part and two second sliders respectively connected with the first sliders, the two first sliders have freedom degrees of moving in a reverse direction or a back direction along a second preset path, the two second sliders in the same linkage group have freedom degrees of moving in a reverse direction or a back direction along a first preset path, the first preset path is respectively vertical to the second preset path and the up-down direction, and the second sliders are further provided with matching parts; and

the mounting plate is used for being mounted on a satellite, and a locking groove used for being clamped with the matching part is formed in the bottom of the mounting plate;

when the driving part drives the two first sliding blocks to move back to back, the two second sliding blocks in the same linkage group move back to back, and the matching part is close to the locking groove and realizes clamping matching; when the driving part drives the two first sliding blocks to move in opposite directions, the two second sliding blocks in the linkage group move in opposite directions, the matching part is far away from the locking groove, and clamping is released.

2. An aerospace rekeying system as claimed in claim 1, wherein said actuating means comprises:

the screw rod is rotationally connected with the base, the axial direction of the screw rod extends along the first preset path, and the axial direction of the screw rod forms a symmetrical shaft between the two linkage groups;

the nut is sleeved on the screw rod to form the driving part; and

and the power mechanism is arranged on the base and used for driving the screw rod to rotate.

3. The space repetitive locking system as claimed in claim 1, further comprising a link mechanism respectively disposed between the first slider and the driving portion and between the second slider and the first slider, wherein the link mechanism comprises a connecting rod and a fixing shaft rotatably connected to both ends of the connecting rod, respectively, the fixing shaft is inserted into the driving portion, the first slider or the second slider, and an axial direction of the fixing shaft extends in an up-down direction.

4. The space repetitive locking system of claim 1 wherein the bottom of the mounting plate is provided with a protruding locking portion, the locking groove is provided in the locking portion, and the locking portions correspond to the second sliding blocks one to one;

the base is provided with a fixing block in one-to-one correspondence with the locking part, the fixing block is located at the bottom of the locking part and is provided with an arc-shaped guide surface, all the fixing blocks are provided with circle centers of the guide surfaces which are coincided, and the locking part is provided with a fitting surface which can be fitted with the guide surfaces.

5. The space repeated locking system as recited in claim 4, wherein a positioning column is further disposed on the top of said fixing block, and a positioning hole corresponding to said positioning column is disposed on said locking portion.

6. An aerospace rekeying system according to claim 4 or claim 5 wherein a damping spring is connected between the fixed block and the second slider, the damping spring having an axial direction parallel to the first predetermined path.

7. An aerospace rekeying system as claimed in claim 3, wherein said second slider comprises:

the block body is arranged on the base in a sliding mode, and the matching part is arranged on one side, facing the locking groove, of the block body;

the push rod is in sliding fit with the block body, a first limiting step and a second limiting step are respectively arranged at two ends of the push rod, the first limiting step is positioned at one end close to the connecting rod, a protruding part protrudes out of the first limiting step, and the protruding part is rotatably connected with the connecting rod through the fixed shaft; and

the elastic piece is arranged between the first limiting step and the block body and has pretightening force for enabling the first limiting step to be far away from the block body.

8. An aerospace rekeying system as claimed in claim 1, wherein said base has a first track extending along said first predetermined path, said actuator slidably engaging said first track;

and/or the presence of a gas in the gas,

and a second sliding rail extending along a second preset path is arranged on the base, and the first sliding block is in sliding fit with the second sliding rail.

9. An aerospace repeat locking system according to claim 1, further comprising a rebound assembly, the rebound assembly comprising:

the fixed rod is fixedly arranged on the base, and a sliding groove is coaxially arranged in the fixed rod;

the bottom of the jacking plate is provided with a sliding rod in sliding fit with the sliding groove, and the jacking plate is positioned below the mounting plate; and

the return spring is sleeved on the sliding rod, one end of the return spring is abutted to the bottom of the sliding groove, the other end of the return spring is abutted to the bottom of the jacking plate, and the return spring has a pretightening force which enables the jacking plate to be far away from the fixed rod.

10. The aerospace rekeying system of claim 9, wherein said central ridge of said jacking plate forms a hemispherical jacking block, said jacking block being capable of point contact with said mounting plate.

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