CN113697134B

CN113697134B - Connection and separation device based on buckling structure

Info

Publication number: CN113697134B
Application number: CN202111041980.6A
Authority: CN
Inventors: 马洪业; 王珂; 赵海峰; 徐钊; 张维; 霍珂言
Original assignee: Technology and Engineering Center for Space Utilization of CAS
Current assignee: Technology and Engineering Center for Space Utilization of CAS
Priority date: 2021-09-07
Filing date: 2021-09-07
Publication date: 2023-02-28
Anticipated expiration: 2041-09-07
Also published as: CN113697134A

Abstract

The invention relates to a connection and separation device based on a buckling structure, which comprises a supporting structure, an elastic part, a torsion spring, a rotary unlocking ring, a rotary separation matching shaft, the buckling structure and a separation shaft, wherein the elastic part, the torsion spring, the rotary unlocking ring, the rotary separation matching shaft, the buckling structure and the separation shaft are arranged in the supporting structure; the rotary unlocking ring is sleeved on the rotary separating and matching shaft and is respectively in limit clamping connection with the rotary separating and matching shaft and the supporting structure, the torsion spring is positioned in the rotary separating and matching shaft, and two ends of the torsion spring are respectively connected with the rotary separating and matching shaft and the supporting structure; the buckling structure is compressed, deformed and limited in the supporting structure through the releasing structure and is abutted against the rotary unlocking ring; an elastic clamping part for limiting the separation shaft is arranged in the supporting structure; rotatory separation cooperation axle sleeve is established in the elasticity joint portion outside and can support or release elasticity joint portion.

Description

Connection and separation device based on buckling structure

Technical Field

The invention relates to the field of spaceflight, in particular to a connection and separation device based on a buckling structure.

Background

The launching of satellites requires a variety of means of connection and disconnection, where disconnection techniques are an important research topic in the aerospace field. The main function of the spacecraft is to realize the space between a spacecraft body and a component and between cabin sections; the spacecraft is firmly connected with the carrier rocket and between the spacecrafts, and unlocking and separation are realized on the operation orbit according to the preset requirement. The separation device mainly comprises an initiating device and a non-initiating device. The former has the disadvantages of poor safety, large impact load during working and the like, and is gradually eliminated in the using process. The latter is increasingly favored because of the advantages of small release impact, reusability and good synchronicity. Based on this, this paper has designed a connection separator of non-priming sytem based on buckling structure, has the release impact little, repeatedly usable, small, the good advantage of synchronism.

Disclosure of Invention

The invention aims to solve the technical problem of providing a connection and separation device based on a buckling structure, aiming at the defects of the prior art.

The technical scheme for solving the technical problems is as follows: a connection and separation device based on a buckling structure comprises a supporting structure, and an elastic piece, a torsion spring, a rotary unlocking ring, a rotary separation matching shaft, the buckling structure and a separation shaft which are arranged in the supporting structure, wherein one end of the elastic piece is fixed on the inner side wall of the supporting structure, and the other end of the elastic piece is abutted against the separation shaft; the rotary unlocking ring is sleeved on the rotary separating and matching shaft and is respectively in limit clamping connection with the rotary separating and matching shaft and the supporting structure, the torsion spring is positioned in the rotary separating and matching shaft, and two ends of the torsion spring are respectively connected with the rotary separating and matching shaft and the supporting structure;

the buckling structure is limited in the supporting structure by compression deformation through a releasing structure and is abutted with the rotary unlocking ring; an elastic clamping part for limiting the separation shaft is arranged in the supporting structure; the rotation separation matching shaft sleeve is arranged on the outer side of the elastic clamping part and can support or release the elastic clamping part;

when the elastic clamping part is separated, the releasing structure releases the buckling structure, the buckling structure pushes the rotating unlocking ring to move axially and releases the locking of the rotating separation matching shaft, the rotating separation matching shaft rotates under the action of the torsion spring, the rotating separation matching shaft releases the support of the elastic clamping part, and the elastic part pushes out the separating shaft in the elastic clamping part.

The invention has the beneficial effects that: the connection and separation device based on the buckling structure has the advantages of small release impact, reusability, small volume, compact structure, good synchronism and the like.

On the basis of the technical scheme, the invention can be further improved as follows.

Furthermore, a hollow structure which is communicated up and down is formed in the middle of the rotating separating and matching shaft, an annular torsion spring mounting groove is formed in the end face of one end of the rotating separating and matching shaft, a separating and releasing port is formed in the side wall of the inner ring of the torsion spring mounting groove, and a first torsion spring end fixing groove is formed in the inner side of the side wall of the outer ring of the torsion spring mounting groove; the torsional spring is arranged in the torsional spring mounting groove, one end of the torsional spring is limited in the first torsional spring end fixing groove, and the other end of the torsional spring is connected with the supporting structure.

The beneficial effect of adopting the above further scheme is: through setting up the torsional spring mounting groove, can place the torsional spring in the torsional spring mounting groove to with the torsional spring tip spacing in first torsional spring tip fixed slot, provide stable assembly for the torsional spring.

Further, set up two mutual disposition's separation release mouth on the inner ring lateral wall of torsional spring mounting groove, be equipped with two mutual disposition's elasticity joint portion in the bearing structure, the separation release mouth can hold elasticity joint portion.

The beneficial effect of adopting the further scheme is that: when the separating shaft is not separated from the separating device, the elastic clamping part is limited in the hollow structure of the rotating separating matching shaft, when the rotating separating matching shaft is stressed, the elastic clamping part rotates to enter the separating release port, the locking of the separating shaft is released, and the separating shaft is ejected out under the action of the elastic piece.

Furthermore, a circle of steps are arranged at a position, close to one end, on the outer side wall of the rotating and separating matching shaft, a through groove which is axially arranged is formed in the steps, a position, close to the other end, of the outer side wall of the rotating and separating matching shaft is a movable area communicated with the through groove, and the inner ring side wall of the rotating and unlocking ring is in limit clamping connection with the through groove or moves to the movable area from the through groove after being stressed.

The beneficial effect of adopting the above further scheme is: the outer side wall of the rotating separation matching shaft is provided with the step and the movable area, the step is provided with the through groove, the rotating unlocking ring can be clamped with the rotating unlocking ring through the through groove, and the rotating unlocking ring can enter the movable area from the through groove due to the fact that the through groove is communicated with the movable area, and the rotating separation matching shaft and the supporting structure are unlocked.

Furthermore, the inner side wall of the rotary unlocking ring is provided with a sliding clamping boss, the supporting structure is internally provided with a limiting boss, the outer side wall of the rotary unlocking ring is provided with an axially through matching groove, the rotary unlocking ring is in limiting clamping connection with a rotary separation matching shaft through the sliding clamping boss, and the limiting boss is clamped in the matching groove in an adaptive mode and can move axially relative to the matching groove.

The beneficial effect of adopting the further scheme is that: the rotary unlocking ring can be locked and matched with the rotary separation matching shaft through a sliding clamping boss on the inner side wall, and can be clamped with the supporting structure through a matching groove on the outer side wall.

Furthermore, the elastic clamping part comprises a geometric locking block and a root bending beam, the geometric locking block is connected to the supporting structure through the root bending beam and can deflect through the root bending beam when stressed; the geometric locking piece is first inclined plane with a side of separating shaft contact, the periphery lateral wall of separating shaft one end is the second inclined plane, first inclined plane with the adaptation of second inclined plane.

The beneficial effect of adopting the further scheme is that: the geometric locking block can be matched and locked with the separating shaft, the geometric locking block is connected to the supporting structure through the root bending beam, and the root bending beam can be bent after the geometric locking block is stressed.

Furthermore, the supporting structure comprises a top cover and a fixed disc which are connected with each other and arranged at intervals, and one end of the elastic piece is fixed on the inner side wall of the top cover; the fixed disc is provided with a release hole, one side of the fixed disc close to the top cover is provided with a limiting cylinder, the limiting cylinder is positioned around the release hole, the limiting cylinder is provided with an elastic clamping hole, and the inner side wall of the elastic clamping hole is connected with the elastic clamping part; the separation shaft penetrates through the release hole and is limited in the limiting cylinder through the elastic clamping part.

The beneficial effect of adopting the further scheme is that: through setting up spacing section of thick bamboo, can set up the separating shaft in spacing section of thick bamboo.

Further, torsional spring installation cooperation groove has been seted up on the medial surface of fixed disk, torsional spring installation cooperation groove is the annular and is located the outside of a spacing section of thick bamboo, be equipped with second torsional spring tip fixed slot on the lateral wall in torsional spring installation cooperation groove, the torsional spring other end is spacing in the second torsional spring tip fixed slot.

The beneficial effect of adopting the further scheme is that: through setting up torsional spring installation cooperation groove, can set up torsional spring one end in torsional spring installation cooperation inslot to make the torsional spring tip spacing in second torsional spring tip fixed slot.

Furthermore, the buckling structure comprises a cosine-shaped buckling beam, two ends of the cosine-shaped buckling beam are respectively fixed on the supporting structure, the cosine-shaped buckling beam is in a cosine shape along the axial direction of the supporting structure, and the cosine-shaped buckling beam is in an arc shape along the direction perpendicular to the axial direction; the top of the cosine shape of the cosine-shaped buckling beam is abutted against the rotary unlocking ring.

The beneficial effect of adopting the further scheme is that: the cosine-shaped buckling beam can provide an axial driving force and drive the rotary unlocking ring to unlock.

Further, the cosine-shaped buckling beam comprises a plurality of beam bodies which are axially stacked and arranged in parallel; the middle part of the cosine-shaped buckling beam is provided with an anti-deflection block, and the anti-deflection block is provided with a fuse through hole.

The beneficial effect of adopting the further scheme is that: the fuse can be connected with the cosine-shaped buckling beam through the fuse through hole, the fuse is connected with and prestretches the buckling beam, the fuse is melted through the circuit electrification, and the deformation release of the buckling beam is realized.

Drawings

FIG. 1 is a perspective view of a buckle-based connect-disconnect apparatus of the present invention;

FIG. 2 is an exploded view of a buckling-structure based connection and disconnection apparatus of the present invention;

FIG. 3 is a perspective view of the end cap of the present invention;

FIG. 4 is a perspective view of a rotating breakaway mating shaft of the present invention;

FIG. 5a is a top view of a rotating split mating shaft of the present invention;

FIG. 5b isbase:Sub>A cross-sectional view A-A of FIG. 5base:Sub>A;

FIG. 6 is a perspective view of a holding pan of the present invention;

FIG. 7a is a top view of the holding pan of the present invention;

FIG. 7B is a cross-sectional view B-B of FIG. 7 a;

FIG. 8 is a perspective view of the rotary unlocking ring of the present invention;

FIG. 9 is a perspective view of the flexure mechanism of the present invention;

FIG. 10 is a schematic view of the fuse connection state of the buckling-structure-based connection and disconnection apparatus according to the present invention;

FIG. 11 is a schematic diagram of a fuse blowing state of the buckling-structure-based connection and disconnection apparatus according to the present invention;

FIG. 12a is a structural diagram of another aspect of the fuse connection state of the buckling-structure-based connection and disconnection apparatus according to the present invention;

FIG. 12b is a cross-sectional view of C-C in FIG. 12 a;

FIG. 13a is a schematic view of the rotating and separating engagement shaft of the connecting and separating device based on the buckling structure after rotating under the action of the torsion spring;

FIG. 13b is a cross-sectional view D-D of FIG. 13 a;

FIG. 14 is a schematic view of the buckling-structure-based connecting and disconnecting device of the present invention showing the geometric locking blocks in an open state;

FIG. 15 is a schematic view of the connection and separation device based on the buckling structure in a state of being pushed out from the separation shaft.

In the drawings, the components represented by the respective reference numerals are listed below:

1. an end cap; 3. a spring; 1-1, boss; 1-3, a through groove; 1-4, sinking a bottom groove;

4. tabletting; 5. a compression nut; 6. rotating the unlocking ring; 6-2, matching grooves; 6-3, a thrust lug; 6-4, sliding clamping bosses;

7. rotating the separation fitting shaft; 7-1, an active area; 7-2, steps; 7-3, a through groove; 7-4, a first torsion spring end fixing groove; 7-5, indirectly fixing the wall by the separating shaft; 7-6, a torsion spring mounting groove; 7-7, a separation release port;

8. a torsion spring; 9. fixing the disc; 9-1, matching with a boss; 9-2, limiting bosses; 9-3, a first threaded through hole; 9-4, sinking a bottom groove; 9-5, through holes; 9-6, fixing grooves at the end parts of the second torsion springs; 9-7, mounting and matching grooves for torsion springs; 9-8 parts of a limiting cylinder; 9-9-1, bending the beam at the root part; 9-9-2, geometric locking block;

11. a buckling structure; 11-1, cosine-shaped buckling beam; 11-2, an anti-deflection block; 11-3, a fuse through hole; 11-4, fixing a connecting block; 11-5, a second threaded through hole; 12. a fuse; 13. a release shaft; 13-1, cylindrical; 13-2, and a reverse trapezoidal round boss.

Detailed Description

The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.

As shown in fig. 1 to 15, the buckling-structure-based connection and separation device of the present embodiment includes a supporting structure, and an elastic member, a torsion spring 8, a rotational unlocking ring 6, a rotational separation engaging shaft 7, a buckling structure 11, and a separation shaft 13, which are disposed in the supporting structure, wherein one end of the elastic member is fixed on an inner sidewall of the supporting structure, and the other end of the elastic member abuts against the separation shaft 13; the rotating unlocking ring 6 is sleeved on the rotating separating matching shaft 7 and is respectively in limit clamping connection with the rotating separating matching shaft 7 and the supporting structure, the torsion spring 8 is positioned in the rotating separating matching shaft 7, and two ends of the torsion spring are respectively connected with the rotating separating matching shaft 7 and the supporting structure; the buckling structure 11 is limited in the supporting structure by compression deformation through a releasing structure and is abutted with the rotary unlocking ring 6; an elastic clamping part for limiting the separation shaft 13 is arranged in the supporting structure; the rotating separation matching shaft 7 is sleeved outside the elastic clamping part and can support or release the elastic clamping part;

when the separation is carried out, the releasing structure releases the buckling structure 11, the buckling structure 11 pushes the rotary unlocking ring 6 to move axially and release the locking with the rotary separation matching shaft 7, the rotary separation matching shaft 7 rotates under the action of the torsion spring 8, the rotary separation matching shaft 7 releases the support of the elastic clamping part, and the elastic piece pushes out the separation shaft 13 in the elastic clamping part. Wherein the release structure may be a fuse.

As shown in fig. 4, 5a and 5b, a hollow structure penetrating up and down is formed in the middle of the rotation separation matching shaft 7 of the present embodiment, an annular torsion spring installation groove 7-6 is formed on an end surface of one end of the rotation separation matching shaft 7, a separation release opening 7-7 is formed on an inner ring side wall of the torsion spring installation groove 7-6, and a first torsion spring end fixing groove 7-4 is formed on an inner side of an outer ring side wall of the torsion spring installation groove 7-6; the torsion spring 8 is arranged in the torsion spring mounting groove 7-6, one end of the torsion spring is limited in the first torsion spring end fixing groove 7-4, and the other end of the torsion spring is connected with the supporting structure. Through setting up the torsional spring mounting groove, can place the torsional spring in the torsional spring mounting groove to with the torsional spring tip spacing in first torsional spring tip fixed slot, provide stable assembly for the torsional spring.

As shown in fig. 4, two separation release openings 7-7 arranged oppositely are formed in the inner ring side wall of the torsion spring mounting groove 7-6 of the present embodiment, two elastic clamping portions arranged oppositely are arranged in the support structure, and the separation release openings 7-7 can accommodate the elastic clamping portions. When the separating shaft is not separated from the separating device, the elastic clamping part is limited in the hollow structure of the rotating separating matching shaft, when the rotating separating matching shaft is stressed, the elastic clamping part rotates to enter the separating release opening, the locking of the separating shaft is released, and the separating shaft is ejected out under the action of the elastic piece.

As shown in fig. 4 and 5a, a circle of step 7-2 is disposed on the outer side wall of the rotating-separating matching shaft 7 near one end, a through groove 7-3 axially disposed is disposed on the step 7-2, a moving region 7-1 communicated with the through groove 7-3 is disposed on the outer side wall of the rotating-separating matching shaft 7 near the other end, and the inner side wall of the rotating unlocking ring 6 is in limit clamping with the through groove 7-3 or moves from the through groove 7-3 to the moving region 7-1 after being stressed. The outer side wall of the rotating separation matching shaft is provided with the step and the movable area, the step is provided with the through groove, the rotating unlocking ring can be clamped with the rotating unlocking ring through the through groove, and the rotating unlocking ring can enter the movable area from the through groove due to the fact that the through groove is communicated with the movable area, and the rotating separation matching shaft and the supporting structure are unlocked.

As shown in fig. 2, 4, 5a and 5b, the rotating and separating matching shaft 7 is a two-step hollow shaft, and is formed by separating the steps 7-2. The through grooves 7-3 are multiple and evenly distributed along the circumferential direction. The through groove 7-3 is used for rotating the sliding clamping boss 6-4 in the unlocking ring 6 to be matched for torsional locking. The end fixing grooves of the first torsion springs are uniformly distributed along the circumferential direction, the cross sections of the end fixing grooves can be matched with the outer wrapping structure of the end of each torsion spring, and one end of each torsion spring is limited and fixed. The part of the side wall of the torsion spring mounting groove 7-6 on the rotating and separating matching shaft 7, which is not provided with the separating release opening 7-7, is a separating shaft indirect fixing arm 7-5. The split axis indirect fixing arms 7-5 provide locking support for the geometric locking blocks in the fixed disk 9. The separation release ports 7-7 are located on both sides of the separation axis indirect fixing arm 7-5.

As shown in fig. 4, 5a and 6, the torsion spring mounting groove of the present embodiment is located at the outer side of the indirect fixing wall 7-5 of the separating shaft and at the inner side of the torsion spring end fixing groove 7-4. Which is shaped to accommodate the envelope of the torsion spring 8. Which functions to provide a working space for the torsion spring 8. The depth of which is slightly smaller than the height of the torsion spring 8. One end of the torsion spring 8 is fixed in one of the first torsion spring end fixing grooves 7-4, and the other end is fixed in the second torsion spring end fixing groove 9-6 of the fixed disk 9, which functions to provide torsion force to twist the rotation separation fitting shaft 7 with respect to the fixed disk 9, and the main body of the torsion spring 8 is located in the torsion spring mounting groove 7-6.

As shown in fig. 8, the outer shape of the rotary unlocking ring 6 of the present embodiment is a cylinder, a sliding locking boss 6-4 is disposed on the inner side wall of the rotary unlocking ring 6, a limiting boss 9-2 is disposed in the supporting structure, an axially through fitting groove 6-2 is disposed on the outer side wall of the rotary unlocking ring 6, the rotary unlocking ring 6 is in limiting engagement with the rotary separating fitting shaft 7 through the sliding locking boss 6-4, and the limiting boss 9-2 is fittingly locked in the fitting groove 6-2 and can axially move relative to the fitting groove 6-2. The rotary unlocking ring can be locked and matched with the rotary separation matching shaft through a sliding clamping boss on the inner side wall, and can be clamped with the supporting structure through a matching groove on the outer side wall. The diameter of the inner wall of the rotary unlocking ring is slightly larger than the outer diameter of the outer wall of the step 7-2 on the outer side wall of the rotary separating matching shaft, the rotary unlocking ring and the outer wall form clearance fit and can slide relatively, and the diameter of the outer wall of the rotary separating matching shaft is smaller than the inner diameter of the buckling structure 11. The outer side wall of the rotary unlocking ring 6 is provided with a matching groove 6-2, the concave shape of the matching groove is matched with the shape of the limiting boss 9-2 to form clearance fit, so that the matching circular groove can slide up and down along the limiting boss 9-2. The outer side wall of the rotary unlocking ring 6 is provided with a thrust lug 6-3, the thrust lug 6-3 and the matching groove are distributed on two sides of the rotary unlocking ring close to the bottom surface in a crossed mode, and the thrust lug is used for bearing thrust from a buckling structure. The sliding clamping bosses are distributed on the inner ring side wall of the rotary unlocking ring, and can be distributed on the same diameter with the thrust lugs. The diameter of the sliding clamping boss is smaller than the width of the step through groove 7-3, and the initial position is located in the step through groove 7-3 and used for limiting the rotation of the rotary unlocking ring 6.

As shown in fig. 6, 7a and 7b, the elastic clamping portion of the present embodiment includes a geometric locking block 9-9-2 and a root bending beam 9-9-1, wherein the geometric locking block 9-9-2 is connected to the support structure through the root bending beam 9-9-1 and can deflect through the root bending beam 9-9-1 when a force is applied; the geometric locking piece 9-9-2 is a first inclined plane on one side surface contacting with the separating shaft 13, the peripheral side wall of one end of the separating shaft 13 is a second inclined plane, and the first inclined plane is matched with the second inclined plane. The geometric locking block can be matched and locked with the separating shaft, the geometric locking block is connected to the supporting structure through the root bending beam, and the root bending beam can be bent after the geometric locking block is stressed.

As shown in fig. 1 and 2, the supporting structure of this embodiment includes a top cover 1 and a fixing plate 9 connected to each other and arranged at an interval, and one end of the elastic member is fixed on the inner side wall of the top cover 1; the fixed disc 9 is provided with a release hole, one side of the fixed disc 9, which is close to the top cover 1, is provided with a limiting cylinder 9-8, the limiting cylinder 9-8 is positioned around the release hole, the limiting cylinder 9-8 is provided with an elastic clamping hole, and the inner side wall of the elastic clamping hole is connected with the elastic clamping part; the separation shaft 13 passes through the release hole and is limited in the limiting cylinders 9-8 through the elastic clamping parts. Through setting up spacing section of thick bamboo, can set up the release shaft in spacing section of thick bamboo.

As shown in fig. 1 to 3, the top cover 1 of the present embodiment is a circular disk, and the circular disk has grooves and protrusions of various shapes, including bosses 1-1 distributed on the edge of the circular disk, through grooves 1-3, and bottom-sinking grooves 1-4. The number of the bosses 1-1 may be any number, for example, two bosses may be provided. The shape of the boss 1-1 can adopt a combination similar to a square and a semicircle, and the boss 1-1 is matched with the limit boss 9-2 on the fixed disk 9 and is fixed by a screw and a nut. The through groove 1-3 is arranged at the edge position of the end cover 1 and penetrates through the edge position of the end cover 1. The through groove 1-3 is matched with a matching boss 9-1 on the fixed disc 9 to play a role in limiting. The end cover 1 is provided with a sunken groove 1-4 which is used for providing extra space for the movement of the buckling structure. One end of the spring 3 close to the end cover 1 can be fixed on the end cover 1 through a nut and a pressing sheet 4, and the other end of the spring 3 abuts against one end of the separation shaft 13 to provide thrust for the separation shaft 13.

As shown in fig. 6, a torsion spring installation matching groove 9-7 is formed in the inner side surface of the fixed disk 9 of this embodiment, the torsion spring installation matching groove 9-7 is annular and is located on the outer side of the limiting cylinder 9-8, a second torsion spring end fixing groove 9-6 is formed in the side wall of the torsion spring installation matching groove 9-7, and the other end of the torsion spring 8 is limited in the second torsion spring end fixing groove 9-6. Through setting up torsional spring installation cooperation groove, can set up torsional spring one end in torsional spring installation cooperation inslot to make the torsional spring tip spacing in second torsional spring tip fixed slot. The end part fixing grooves 9-6 of the second torsion springs are a plurality of and are uniformly distributed around the torsion spring mounting matching grooves 9-7, and the end part of the other end of each torsion spring is fixed. The width of the torsion spring mounting matching groove 9-7 can accommodate the inner and outer envelopes of the torsion spring 8. The sum of the depth of the torsion spring mounting groove 7-6 and the depth of the torsion spring mounting groove is slightly larger than the height of the torsion spring 8, and the torsion spring mounting groove is used for providing a working space for the non-torsion spring 8.

As shown in fig. 6, the fixing disc 9 of the present embodiment is a circular disc, a series of bosses are distributed on the edge of the fixing disc 9, a limiting cylinder 9-8 is distributed in the middle of the fixing disc, and a releasing hole is arranged in the center of the fixing disc 9. The shape of the matching boss 9-1 arranged on the fixed disc 9 is the same as that of the through groove 1-3 in the top cover 1, a plurality of symmetrical matching bosses 9-1 can be preferably arranged, the matching bosses 9-1 and the through grooves 1-3 are arranged in a one-to-one correspondence manner, geometric locking is realized, and the relative torsion of the fixed disc and the end cover is prevented. The limiting bosses 9-2 on the fixed disk 9 have the same appearance as the bosses 1-1 in the end cover 1 and are uniformly distributed on the outer side of the fixed disk 9, the limiting bosses 9-2 are used for connecting and fixing the end cover 1 and the fixed disk 9, and the limiting bosses 9-2 are provided with first threaded through holes 9-3 which can be used for being connected with the end cover 1. The fixed disc 9 is also provided with a through hole 9-5 for passing a fuse. The inner side of the fixed disk 9 is provided with a bottom sinking groove 9-4 near the edge, the bottom sinking groove 9-4 can be used for providing extra space for the deformation of the buckling structure 11, and the through holes 9-5 are distributed on the bottom sinking groove 9-4 and used for a fuse to pass through the fixed disk 9.

As shown in fig. 1 to 3, the limiting cylinder 9-8 is concentric with the fixed disk 9, the part inside the limiting cylinder 9-8 is completely penetrated, and the inner wall of the limiting cylinder 9-8 and the outer wall of the separating shaft 13 form clearance fit and can slide relatively; the outer wall of the limiting cylinder 9-8 and the inner wall of the indirect fixing arm of the separating shaft form clearance fit and can slide relatively.

As shown in fig. 2, 12b, 13b, and 14 and 15, the separation shaft 13 includes a cylinder 13-1 and an inverted trapezoidal circular boss 13-2. The outer wall of cylinder 13-1 is in clearance fit with the inner wall of cylinder 9-8, and can slide relative to the cylinder, and the outer wall of cylinder is used for connecting an external payload. The section trapezoidal acute angle of the inverted trapezoidal circular boss 13-2 is the same as that of the geometric locking block 9-9-2, and the two can generate geometric action for locking and releasing the effective load; the center of which has a circular counter bore with a diameter larger than that of the compression spring 3 for the compression spring 3 to protrude into, and the thrust force required for its payload release is provided by the compression spring 3. The elastic clamping part comprises a geometric locking block 9-9-2 and a root fixing beam 9-9-1, the root fixing beam 9-9-1 is used for connecting the geometric locking block 9-9-2 and the root fixing beam 9-9-1, the root fixing beam 9-9-1 is thin, and can be bent and deformed when the geometric locking block 9-9-2 is subjected to external force, so that the geometric locking block 9-9-2 can be translated and rotated. The section of the geometric locking block 9-9-2 is a right-angle trapezoid, the geometric locking block is obtained by rotating and stretching along the axial direction of the fixed disc 9, the diameter of the outer side surface of the geometric locking block is equal to the outer diameter of the limiting cylinder 9-8, the average diameter of the inner side surface of the geometric locking block is smaller than the inner diameter of the limiting cylinder 9-8 due to the fact that the inner side surface of the geometric locking block is the inclined edge of the right-angle trapezoid, and the geometric locking block and the inverted trapezoid circular boss 13-2 of the separation shaft 13 form geometric locking.

As shown in fig. 9, the buckling structure 11 of the present embodiment includes a cosine-shaped buckling beam 11-1, two ends of the cosine-shaped buckling beam 11-1 are respectively fixed on the supporting structure, the shape of the cosine-shaped buckling beam 11-1 along the axial direction of the supporting structure is cosine-shaped, and the shape along the direction perpendicular to the axial direction is arc-shaped; the cosine-shaped top of the cosine-shaped buckling beam 11-1 abuts against the rotation unlocking ring 6. The radius of the circular arc is slightly larger than the radius of the outer wall of the rotary unlocking ring. The cosine-shaped buckling beam can provide an axial driving force and drive the rotary unlocking ring to unlock. Under certain parameters, the force generated by the cosine-shaped buckling beam 11-1 in the vertical direction shows a tendency of increasing, decreasing and increasing along with the increase of the displacement.

As shown in fig. 9, the cosine-shaped buckling beam 11-1 of the present embodiment comprises a plurality of beam bodies axially stacked and arranged in parallel; the middle part of the cosine-shaped buckling beam 11-1 is provided with an anti-deflection block 11-2, and the anti-deflection block 11-2 is provided with a fuse through hole 11-3. The function of the anti-yaw block is to allow only the cosine-shaped buckling beam 11-1 to move in the vertical direction without turning. The fixed connecting blocks 11-4 are positioned on two sides of the cosine-shaped buckling beam 11-1, one end of each fixed connecting block 11-4 is higher than the corresponding buckling structure 11, and the higher part of each fixed connecting block 11-4 is provided with a second threaded through hole 11-5 for connecting the fixed disc 9. The fuse can be connected with the cosine-shaped buckling beam through the fuse through hole, the fuse is connected with and prestretches the buckling beam, the fuse is melted through the circuit electrification, and the deformation release of the buckling beam is realized. The buckling structure is fixed on the limiting boss 9-2 of the fixed disc 9 through a screw and a nut. The flexure mechanism 11 provides a deformation driving force for the detachment of the detachment device.

The initial connection state of the buckling structure-based connection and separation device is as follows: as shown in fig. 10, the buckling beam 11 is displaced and deformed to a position where the force is close to zero under the action of the pretension force, and is pulled and fixed by the fuse 12, and the thrust bump 6-3 is attached to the buckling beam; as shown in fig. 12b, the separation shaft indirect fixing wall 7-5, the geometric locking block 9-9-2 and the inverted trapezoidal circular boss 13-2 form geometric locking, and the separation shaft 13 cannot move downwards and is in a connection state.

The separation process of the connection and separation device based on the buckling structure (shown in figures 10-15) is as follows:

as shown in fig. 10, the coupling and decoupling device based on the buckling structure is in an initial coupling state.

As shown in fig. 11, the external circuit energizes the fuse 12 to melt, the buckling structure 11 is released from the constraint, the stored elastic potential energy is released, it deforms upward and drives the thrust lug 6-3 to move upward, and the entire rotary unlocking ring 6 slides upward.

As shown in fig. 12a and 12b, when the rotary unlocking ring 6 slides upwards to the top, the sliding clamping circular boss 6-4 slides out of the step through groove 7-3, at this time, the rotation restriction of the rotary separation matching shaft 7 disappears, and the rotary separation matching shaft rotates under the drive of the torsion spring 8, so that the geometric locking formed by the original separation shaft indirect fixing wall 7-5, the geometric locking block 9-9-2 and the inverted trapezoidal circular boss 13-2 disappears, and only the restriction formed by the geometric locking block 9-9-2 and the inverted trapezoidal circular boss 13-2 as shown in fig. 13a and 13b remains. Due to the downward tendency of the release shaft 13 to move under the action of the compression spring 3, the geometric locking piece 9-9-2 will rotate and translate outward due to the deformation of the root bending beam 9-9-1 without blocking the downward tendency, forming the shape shown in fig. 14.

As shown in fig. 15, the separating shaft 13 continues to slide downwards until it is completely disengaged from the whole mechanism, and the root bending beam 9-9-1 and the geometric locking block 9-9-2 resume their original shape without geometric constraint, at which time the separating shaft has completed the separating task.

The connection and separation device based on the buckling structure has the advantages of small release impact, reusability, small volume, compact structure, good synchronism and the like.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being permanently connected, detachably connected, or integral; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the second feature or the first and second features may be indirectly contacting each other through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.

Claims

1. A connection and separation device based on a buckling structure is characterized by comprising a supporting structure, and an elastic part, a torsion spring, a rotary unlocking ring, a rotary separation matching shaft, the buckling structure and a separation shaft which are arranged in the supporting structure, wherein one end of the elastic part is fixed on the inner side wall of the supporting structure, and the other end of the elastic part is abutted against the separation shaft; the rotary unlocking ring is sleeved on the rotary separating and matching shaft and is respectively in limit clamping connection with the rotary separating and matching shaft and the supporting structure, the torsion spring is positioned in the rotary separating and matching shaft, and two ends of the torsion spring are respectively connected with the rotary separating and matching shaft and the supporting structure;

the buckling structure is limited in the supporting structure by compression deformation through a releasing structure and is abutted with the rotary unlocking ring; an elastic clamping part used for limiting the separation shaft is arranged in the supporting structure; the rotation separation matching shaft sleeve is arranged on the outer side of the elastic clamping part and can support or release the elastic clamping part;

when the elastic clamping part is separated, the releasing structure releases the buckling structure, the buckling structure pushes the rotating unlocking ring to move axially and releases the locking of the rotating separation matching shaft, the rotating separation matching shaft rotates under the action of the torsion spring, the rotating separation matching shaft releases the support of the elastic clamping part, and the elastic piece pushes out the separating shaft in the elastic clamping part.

2. The connection and separation device based on the buckling structure as claimed in claim 1, wherein a hollow structure is formed in the middle of the rotation and separation engaging shaft, an annular torsion spring mounting groove is formed on an end surface of one end of the rotation and separation engaging shaft, a separation release opening is formed on an inner ring side wall of the torsion spring mounting groove, and a first torsion spring end fixing groove is formed on an inner side of an outer ring side wall of the torsion spring mounting groove; the torsional spring is arranged in the torsional spring mounting groove, one end of the torsional spring is limited in the first torsional spring end fixing groove, and the other end of the torsional spring is connected with the supporting structure.

3. The connection and separation device based on the buckling structure as claimed in claim 2, wherein two oppositely arranged separation release openings are formed on the inner ring side wall of the torsion spring mounting groove, two oppositely arranged elastic clamping portions are arranged in the support structure, and the separation release openings can accommodate the elastic clamping portions.

4. The connection and separation device based on the buckling structure as claimed in claim 1, wherein a circle of steps are arranged on the outer side wall of the rotation and separation matching shaft at a position close to one end, a through groove arranged axially is formed in each step, a position of the outer side wall of the rotation and separation matching shaft close to the other end is an active area communicated with the through groove, and the inner ring side wall of the rotation unlocking ring is in limit clamping connection with the through groove or moves to the active area from the through groove after being stressed.

5. The connection and separation device based on the buckling structure as claimed in claim 1, wherein the inner side wall of the rotary unlocking ring is provided with a sliding clamping boss, the support structure is provided with a limiting boss, the outer side wall of the rotary unlocking ring is provided with an axially through matching groove, the rotary unlocking ring is in limit clamping connection with the rotary separation matching shaft through the sliding clamping boss, and the limiting boss is adapted to be clamped into the matching groove and can axially move relative to the matching groove.

6. The connection and separation device based on the buckling structure is characterized in that the elastic clamping part comprises a geometric locking block and a root bending beam, the geometric locking block is connected to the support structure through the root bending beam and can deflect through the root bending beam when stressed; the geometric locking piece is first inclined plane with a side of separating shaft contact, the periphery lateral wall of separating shaft one end is the second inclined plane, first inclined plane with the adaptation of second inclined plane.

7. The buckling-structure-based connection and separation device as claimed in claim 1, wherein the supporting structure comprises a top cover and a fixed plate which are connected with each other and arranged at intervals, and one end of the elastic member is fixed on the inner side wall of the top cover; the fixed disc is provided with a release hole, one side of the fixed disc, which is close to the top cover, is provided with a limiting cylinder, the limiting cylinder is positioned around the release hole, the limiting cylinder is provided with an elastic clamping hole, and the inner side wall of the elastic clamping hole is connected with the elastic clamping part; the separating shaft penetrates through the release hole and is limited in the limiting cylinder through the elastic clamping part.

8. The connection and separation device based on the buckling structure as claimed in claim 7, wherein a torsion spring installation matching groove is formed in the inner side surface of the fixed disk, the torsion spring installation matching groove is annular and located on the outer side of the limiting cylinder, a second torsion spring end fixing groove is formed in the side wall of the torsion spring installation matching groove, and the other end of the torsion spring is limited in the second torsion spring end fixing groove.

9. The connection and separation device based on the buckling structure as claimed in claim 1, wherein the buckling structure comprises a cosine-shaped buckling beam, two ends of the cosine-shaped buckling beam are respectively fixed on the supporting structure, the cosine-shaped buckling beam is cosine-shaped along the axial direction of the supporting structure and arc-shaped along the direction perpendicular to the axial direction; the top of the cosine shape of the cosine-shaped buckling beam is abutted against the rotary unlocking ring.

10. The connection and separation device based on a buckling structure as claimed in claim 9, wherein the cosine-shaped buckling beam comprises a plurality of beam bodies which are axially stacked and arranged in parallel; the middle part of the cosine-shaped buckling beam is provided with an anti-deflection block, and the anti-deflection block is provided with a fuse through hole.