A single-point trigger multi-point synchronous unlocking star-rocket separation device

Abstract

The application belongs to the technical field of separators for spaceflight, and particularly relates to a single-point triggering and multi-point synchronous unlocking star-satellite separation device, which comprises a connecting seat connected with a base, a driving ring rotatably connected with the connecting seat, a separation ring connected with a separation body, a pin puller capable of locking the driving ring, and a connecting locking mechanism arranged between the separation ring and the connecting seat, which can fixedly connect the separation ring and the connecting seat together in a locked state. When the pin puller is triggered and the pin shaft is pulled out of the driving ring, the driving ring can trigger the connecting locking mechanism through rotation, the fixed connection of the separation ring and the connecting seat is released, and the separation body can be separated from the connecting seat. The star-satellite separation device has the advantages of simple and stable structure, quick unlocking, good unlocking and separation synchronization, large lift coefficient and small release impact.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of separators for spaceflight, and particularly relates to a star-rocket separation device with single-point triggering and multi-point synchronous unlocking. BACKGROUND

[0002] Spacecraft need to realize space connection and unlocking functions through various connection and separation devices, such as separation of multi-stage launch vehicles, deployment of solar wings on satellites or spacecraft, and the like. The main function of the connection and separation device in the spacecraft is to reliably connect the separated body and the base before the separation action, and to reliably release the connection between the separated body and the base when receiving the separation signal.

[0003] At present, the connection and separation devices for spacecraft mainly include pyrotechnic connection and separation devices and non-pyrotechnic connection and separation devices. Among them, the pyrotechnic connection and separation device mainly triggers the driving force by explosive explosion, so that the separated body is unlocked and separated. However, due to the problems of the pyrotechnic connection and separation device, such as large impact (greater than 2000g), pollution, easy to affect the precision instruments and loads in space, and unable to repeat the test, the application is very limited. In addition, the pyrotechnic connection and separation device also has defects such as difficult storage and transportation, non-reusable, high cost, etc. Compared with the pyrotechnic connection and separation device, the non-pyrotechnic connection and separation device can significantly reduce the impact when released, which is usually reduced from 3000-20000g of the pyrotechnic device to 300-3000g, greatly improving the impact environment of the spacecraft such as satellites; at the same time, the safety protection problem of the explosive is eliminated, and there is no harmful gas generated by the explosion of the explosive, which does not pollute the environment, and can be used multiple times, facilitating test verification and easy to ensure the reliability of the release device, so the non-pyrotechnic connection and separation device is gradually replacing the pyrotechnic connection and separation device.

[0004] The non-pyrotechnic connection and separation device mainly has two technical solutions of synchronous separation and independent separation. Among them, the independent separation technology is mainly suitable for single-point connection of small loads. When facing large loads that need multiple connection points, multiple individually triggered unlockers cannot guarantee the synchronization of separation. However, the synchronous separation type connection and separation device has defects such as complex structure, small lift coefficient, slow unlocking speed, poor unlocking synchronization, and large release impact, which affects the separation attitude of the load. At the same time, the existing multi-point compression separation device using synchronous unlocking uses a multi-link transmission mechanism and a jaw compression locking structure. The multi-link transmission mechanism has many workpieces and complex assembly, and has poor impact resistance. The dead point structure is used to lift, and the unlocking release impact is large. The jaw compression upper and lower end faces have limited carrying capacity.

[0005] Therefore, the present application is proposed. SUMMARY

[0006] The application aims at providing a satellite-rocket separation device triggered by a single point and synchronized with multiple points to simplify the structure of the synchronous separation type connection separation device, improve its lift coefficient, improve the unlocking response speed and unlocking synchronization, and reduce the release impact.

[0007] Therefore, the application provides a satellite-rocket separation device triggered by a single point and synchronized with multiple points, which comprises:

[0008] A connection base connected with the base;

[0009] A driving ring in a ring structure, which is located on the inner side of the connection base and is rotatably connected with the connection base;

[0010] A separation ring oppositely arranged with the connection base, which is connected with a separation body to be separated;

[0011] A pin extractor arranged on the connection base, and a pin shaft of the pin extractor is inserted into the driving ring to lock the driving ring;

[0012] A connection locking mechanism arranged between the separation ring and the connection base, which can fixedly connect the separation ring and the connection base together in the locked state;

[0013] When the pin extractor is triggered and the pin shaft is pulled out of the driving ring, the driving ring can trigger the connection locking mechanism by rotating to release the fixed connection of the connection locking mechanism to the separation ring and the connection base, and the separation ring and the separation body to be separated can be separated from the connection base.

[0014] Further, the satellite-rocket separation device triggered by a single point and synchronized with multiple points further comprises:

[0015] A separation mechanism arranged between the connection base and the separation ring, which is configured to push the separation ring and the separation body to separate from the connection base when the connection locking mechanism releases the fixed connection of the separation ring and the connection base and the separation ring and the connection base can be separated.

[0016] Further, one pin extractor is arranged on the connection base, and a plurality of connection locking mechanisms and a plurality of separation mechanisms are arranged on the connection base in the circumferential direction.

[0017] Further, a plurality of driving springs are arranged in the circumferential direction of the connection base, one end of the driving spring is fixedly connected with the connection base, and the other end is fixedly connected with the driving ring;

[0018] When the pin shaft of the pin extractor is inserted into the driving ring to lock the driving ring, the driving spring is stretched or compressed;

[0019] When the pin puller is triggered and the pin is pulled out of the drive ring, the drive spring returns to its original deformation, which can drive the drive ring to rotate clockwise or counterclockwise and trigger the connection locking mechanism.

[0020] Furthermore, multiple brackets are arranged circumferentially along the connecting seat. The brackets are used to support the drive ring and install the drive ring on the inner side of the connecting seat. At the same time, the brackets allow the drive ring to rotate freely under the drive spring.

[0021] Furthermore, the drive ring is provided with a plug hole, and the pin of the pin puller is inserted into the plug hole to lock the drive ring. The pin puller is a shape memory alloy pin puller.

[0022] Furthermore, the connection locking mechanism includes:

[0023] Locking screw, split nut, slider, release handle and ball bearing;

[0024] After the screw of the locking screw passes through the separating ring, it is inserted into the split nut. A slider is provided around the split nut. The inner sidewall of the slider is inclined. An unlocking groove is provided on the lower surface of the slider. A release handle is provided on the lower side of the slider. A ball is provided on the release handle. The release handle is connected to the drive ring. The release handle can rotate under the drive ring.

[0025] When the connecting locking mechanism is in the locked state, the ball is misaligned with the unlocking groove. At this time, the slider is limited by the ball and cannot move downward. The slider presses the split nut tightly, and the split nut is fixedly connected to the locking screw.

[0026] When the drive ring is released and rotates, it can drive the release handle to rotate. When the release handle drives the ball to rotate to the position of the unlocking groove, the ball is partially accommodated in the unlocking groove, the slider slides downward, the petals of the split nut separate, the locking screw comes out from the split nut, and the separating ring and the connecting seat separate.

[0027] Furthermore, the connection locking mechanism also includes:

[0028] Top cover, bottom cover, and positioning screws;

[0029] The top cover is located on the side of the connecting locking mechanism closer to the separating ring, and the bottom cover is located on the side of the connecting locking mechanism closer to the connecting seat. The top cover and the bottom cover are fastened together to form the outer shell of the connecting locking mechanism.

[0030] The positioning screw is located at the lower center of the connecting locking mechanism, and the positioning screw is connected with the connecting seat through the release handle.

[0031] Further, the separation mechanism comprises:

[0032] The limiting cylinder, the limiting screw and the separation spring, the limiting cylinder is arranged between the connecting seat and the separation ring, and one end of the limiting cylinder is fixedly connected with the connecting seat by the limiting screw, and the other end abuts against the separation ring; the separation spring is sleeved outside the limiting cylinder;

[0033] When the connecting locking mechanism is in the locked state, the separation spring is in the compressed state;

[0034] When the connecting locking mechanism is triggered and unlocked, the separation spring returns to the deformation, pushes the separation ring to move along the path defined by the limiting cylinder away from the connecting seat, and lifts the separation ring.

[0035] Further, the separation mechanism further comprises:

[0036] The sleeve is slidably sleeved outside the limiting cylinder, and the separation spring is sleeved outside the sleeve;

[0037] An outward turning edge is arranged at the upper end of the limiting cylinder, an inward turning edge is arranged at the lower end of the sleeve, and an outward turning edge is arranged at the upper end of the sleeve, and the separation spring is clamped below the outward turning edge at the upper end of the sleeve.

[0038] The single-point triggering and multi-point synchronous unlocking star-rocket separation device has the advantages of simple and stable structure, rapid unlocking, good unlocking and separation synchronization, large lifting coefficient, and small release impact. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 is a schematic diagram of the structure of the star-rocket separation device of the present application;

[0040] Figure 2 is a schematic diagram of the structure of the star-rocket separation device of the present application in the unlocked state;

[0041] Figure 3 is a schematic diagram of the assembly structure of the puller and the driving ring in the star-rocket separation device of the present application;

[0042] Figure 4 is a schematic diagram of the cross-sectional structure of the connecting locking mechanism in the locked state in the star-rocket separation device of the present application;

[0043] Figure 5 is the cross-sectional structure schematic diagram of the connecting locking mechanism in the release state in the satellite-rocket separation device of the present application;

[0044] Figure 6 is the cross-sectional structure schematic diagram of the separation mechanism in the satellite-rocket separation device of the present application;

[0045] The marks in the figure are:

[0046] 1, connecting seat; 101, driving spring; 102, bracket; 2, driving ring; 201, plug-in hole; 202, pin; 3, separation ring; 301, accommodating groove; 4, pin puller; 401, pin shaft; 5, connecting locking mechanism; 501, locking screw; 502, top cover; 503, split nut; 504, sliding block; 5041, unlocking groove; 505, release handle; 5051, limiting hole; 506, positioning screw; 507, ball; 508, bottom cover; 6, separation mechanism; 601, limiting cylinder; 602, limiting screw; 603, sleeve; 604, separation spring. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art belong to the scope of protection of the present application.

[0048] In the description of the present application, it should be noted that the terms used herein are only for describing the specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For the convenience of description, the sizes of the various parts shown in the drawings are not drawn in accordance with the actual proportional relationship. The technology, methods and devices known to those skilled in the relevant art can not be discussed in detail, but in appropriate cases, the technology, methods and devices should be considered as part of the authorized description. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0049] It should be noted that in the description of the present application, the terms of orientation such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship are generally based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, without making the opposite statement, these orientation terms do not indicate and imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the scope of protection of the present application; the orientation terms "inner, outer" refer to the inner and outer of the contour of each component itself.

[0050] It should be noted that in the present application, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, method, article or device. Without more limitation, the element defined by the sentence "including a…" does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but can also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method can be performed in an order different from that described, and various steps can also be added, omitted or combined. In addition, the features described with reference to certain examples can be combined in other examples.

[0051] As shown in Figures 1-6 A star-rocket separation device for single-point triggering and multi-point synchronization unlocking includes:

[0052] A connecting seat 1 in a ring structure, the connecting seat 1 is connected with a base;

[0053] A driving ring 2 in a ring structure, the driving ring 2 is located on the inner side of the connecting seat 1, and is rotatably connected with the connecting seat 1;

[0054] A separation ring 3 in a ring structure, the separation ring 3 is oppositely arranged with the connecting seat 1, and the separation ring 3 is connected with a separation body to be separated;

[0055] A pin extractor 4 arranged on the connecting seat 1, a pin shaft 401 of the pin extractor 4 is inserted into the driving ring 2 to lock the driving ring 2;

[0056] A connecting locking mechanism 5 arranged between the separation ring 3 and the connecting seat 1, in the locked state, the connecting locking mechanism 5 can fixedly connect the separation ring 3 and the connecting seat 1 together;

[0057] When the pin puller 4 is triggered, the pin shaft 401 is pulled out from the driving ring 2, the driving ring 2 can trigger the connection locking mechanism 5 by rotating, so that the connection locking mechanism 5 releases the fixed connection of the separation ring 3 and the connection seat 1, the separation ring 3 and the connection seat 1 are separated, at this time, the separation ring 3 and the separation body to be separated can be separated from the connection seat 1.

[0058] As some examples of the present application, the base can be a rocket, a spacecraft, a first or second stage of a multi-stage launch vehicle, or other spacecraft main structure or other fixed structure, which is connected to another separable part, i.e. a separation body, as part of the connection and separation device.

[0059] As some examples of the present application, the separation body to be separated can be a payload on a rocket, such as a satellite, a probe, etc., or a solar wing on a satellite or a spacecraft, in addition, the separation body can also be other detachable parts on a spacecraft, such as an instrument module, an experiment cabin, a docking cabin, etc.

[0060] As some examples of the present application, the radial cross-sectional shape of the driving ring 2 can be set as needed, such as a circle, a rectangle, etc.

[0061] Further, the single-point triggering and multi-point synchronous unlocking spacecraft-rocket separation device further comprises:

[0062] The separation mechanism 6 is arranged between the connection seat 1 and the separation ring 3, and the separation mechanism 6 is configured to push the separation ring 3 and the separation body to separate from the connection seat 1 when the connection locking mechanism 5 releases the fixed connection of the separation ring 3 and the connection seat 1, and the separation ring 3 and the connection seat 1 can be separated.

[0063] Preferably, a pin puller 4 is arranged on the connection seat 1, when the base and the separation body need to be separated, the pin puller 4 is triggered, the pin shaft 401 on it is pulled out from the driving ring 2, realizing single-point triggering of the spacecraft-rocket separation device.

[0064] As some examples of the present application, 3-6 connection locking mechanisms 5 and 3-6 separation mechanisms 6 are arranged circumferentially on the connection seat 1, and the number of connection locking mechanisms 5 and separation mechanisms 6 is equal.

[0065] Preferably, the connection locking mechanism 5 and the separation mechanism 6 are arranged in pairs, and one separation mechanism 6 is arranged near each connection locking mechanism 5.

[0066] As some examples of the present application, the pin puller 4 can be a shape memory alloy pin puller, or other forms of non-explosive triggering mechanism with pin pulling capability.

[0067] Preferably, the pin puller 4 is a shape memory alloy pin puller.

[0068] Further, a plurality of drive springs 101 are arranged along the circumference of the connecting seat 1, one end of the drive spring 101 is fixedly connected with the connecting seat 1, the other end is fixedly connected with the driving ring 2, when the pin shaft 401 of the pin puller 4 is inserted into the driving ring 2 and the driving ring 2 is locked, the drive spring 101 is stretched or compressed; when the pin puller 4 is triggered and the pin shaft 401 is pulled out of the driving ring 2, the drive spring 101 returns to the deformation, which can drive the driving ring 2 to rotate clockwise or counterclockwise, the driving ring 2 triggers the connecting locking mechanism 5 by rotating, so that the connecting locking mechanism 5 releases the fixed connection of the separating ring 3 and the connecting seat 1, and the separating ring 3 and the separating body to be separated can be separated from the connecting seat 1.

[0069] Preferably, 2-4 drive springs 101 are uniformly spaced along the circumference of the connecting seat 1, the driving ring 2 is driven to rotate by the drive spring 101, all connecting locking mechanisms 5 are synchronously triggered, and multi-point synchronous unlocking of the star-rocket separating device is realized.

[0070] Further, a plurality of supports 102 are arranged along the circumference of the connecting seat 1, the support 102 includes support strips oppositely arranged on both sides of the driving ring 2, the support 102 is used for supporting the driving ring 2 and mounting the driving ring 2 on the inner side of the connecting seat 1; at the same time, the support 102 does not clamp the driving ring 2, and allows the driving ring 2 to freely rotate under the driving of the drive spring 101.

[0071] As some examples of the present application, 3-6 supports 102 are uniformly spaced along the circumference of the connecting seat 1.

[0072] Further, the driving ring 2 is provided with a plug-in hole 201, the pin shaft 401 of the pin puller 4 is inserted into the plug-in hole 201, and the driving ring 2 is locked so as to be unable to rotate.

[0073] Further, the connecting locking mechanism 5 includes:

[0074] locking screws 501, split nuts 503, sliding blocks 504, release handles 505 and balls 507,

[0075] The screw rod of the locking screw 501 is inserted into the split nut 503 after passing through the separation ring 3, the split nut 503 is provided with a sliding block 504 on the periphery, the inner side wall of the sliding block 504 is beveled, the lower surface of the sliding block 504 is provided with an unlocking groove 5041, a release handle 505 is provided on the lower side of the sliding block 504, the release handle 505 is provided with a ball 507, the release handle 505 is connected with the driving ring 2, and the release handle 505 can rotate under the driving of the driving ring 2.

[0076] When the connecting and locking mechanism 5 is in the locked state, the ball 507 is out of position with the unlocking groove 5041, at this time, the sliding block 504 can be limited by the ball 507 and cannot move downward, thereby enabling the sliding block 504 to press the split nut 503 tightly, and the split nut 503 can be fixedly connected with the locking screw 501; at this time, under the action of the pre-tightening force, the split nut 503 has a tendency to open radially.

[0077] When the driving ring 2 is released and rotated, the driving ring 2 rotates under the action of the driving spring 101, driving the release handle 505 to rotate, when the release handle 505 drives the ball 507 to rotate to the position of the unlocking groove 5041, the ball 507 is partially contained in the unlocking groove 5041, the sliding block 504 is no longer limited by the ball 507 and cannot move downward, and can slide downward, at this time, the radial constraint force of the split nut 503 is reduced, the split nut 503 is separated, the locking screw 501 can be separated from the split nut 503, the separation ring 3 and the connecting seat 1 are separated, thereby enabling the locking screw 501, the separation ring 3 and the separation body to be separated from the connecting seat 1.

[0078] Preferably, external threads and internal threads are respectively provided on the locking screw 501 and the split nut 503, and the locking screw 501 and the split nut 503 are connected through thread cooperation to increase the stability of the connection between the locking screw 501 and the split nut 503.

[0079] In addition, the locking screw 501 and the split nut 503 can also be replaced by a connecting rod with a bevel and a wedge. For example, the lower end of the connecting rod is large and the upper end is small, and the inner side gap of the wedge is large at the upper end and small at the lower end, and the connection between the connecting rod and the wedge is realized through the cooperation of the bevel.

[0080] Furthermore, a limiting hole 5051 is provided on the release handle 505, and the ball 507 is arranged in the limiting hole 5051, and the position of the ball 507 is limited in the locked state through the limiting hole 5051.

[0081] It should be noted that in the description of the connection locking mechanism 5, the orientation words "upper", "lower" are described according to the state shown in Figure 4 and 5 , wherein "upper" refers to the side of the connection locking mechanism 5 close to the separation ring 3, and "lower" refers to the side of the connection locking mechanism 5 close to the connection seat 1.

[0082] In the connection locking mechanism 5, the selected split nut 503 cooperates with the connection mode of the compression locking screw 501, which has the advantage of strong bearing capacity. In some specific requirements, the split nut 503 can be replaced by a split body, and the locking screw 501 can be replaced by a locking link with an inclined surface.

[0083] In addition, the number of the ball 507 can be changed, and multiple balls 507 can be used simultaneously as part of the connection locking mechanism 5, which improves the ability of the connection locking mechanism 5 to release the limit.

[0084] Further, the connection locking mechanism 5 further comprises:

[0085] a top cover 502, a bottom cover 508 and a positioning screw 506;

[0086] The top cover 502 is located on the side of the connection locking mechanism 5 close to the separation ring 3, the bottom cover 508 is located on the side of the connection locking mechanism 5 close to the connection seat 1, the top cover 502 and the bottom cover 508 are relatively buckled together, and the top cover 502 and the bottom cover 508 form an outer shell of the connection locking mechanism 5, the split nut 503 and the sliding block 504 are arranged in the outer shell, and part of the release handle 505 extends from the outer shell and is connected with the driving ring 2.

[0087] The positioning screw 506 is located at the lower center of the connection locking mechanism 5, the positioning screw 506 is connected with the connection seat 1 after penetrating the release handle 505, the release handle 505 is rotatably connected with the positioning screw 506, and the release handle 505 is positioned by the positioning screw 506.

[0088] As some embodiments of the present application, a pin 202 is arranged on the driving ring 2, the pin 202 is inserted into a through hole on the release handle 505, and the connection with the release handle 505 is realized.

[0089] As some other embodiments of the present application, the connection between the driving ring 2 and the release handle 505 can also adopt a link, a hinge or the like.

[0090] Further, a containing groove 301 is arranged on the separation ring 3, a through hole is arranged at the bottom of the containing groove 301, the shank of the locking screw 501 passes through the through hole at the bottom of the containing groove 301 and is connected with the connecting locking mechanism 5, the head of the locking screw 501 is clamped and accommodated in the containing groove 301 and cannot pass through the through hole at the bottom of the containing groove 301.

[0091] Further, the separation mechanism 6 comprises:

[0092] A limiting cylinder 601 is arranged between the connecting seat 1 and the separation ring 3, one end of the limiting cylinder 601 is fixedly connected to the connecting seat 1 by the limiting screw 602, and the other end abuts against the separation ring 3; the separation spring 604 is sleeved outside the limiting cylinder 601;

[0093] When the connecting locking mechanism 5 is in the locked state, the connecting locking mechanism 5 can press the separation ring 3 by the locking screw 501, and then press the separation mechanism 6 by the separation ring 3, so that the separation spring 604 in the separation mechanism 6 is in a compressed state;

[0094] When the connecting locking mechanism 5 is triggered and unlocked, the locking screw 501 is separated from the split nut 503 and moves upward, no longer pressing the separation ring 3, the pressure on the separation spring 604 is reduced and the deformation is recovered, the separation ring 3 is pushed to move along the path defined by the limiting cylinder 601 in the direction away from the connecting seat 1, the separation ring 3 is lifted, and the separation ring 3 and the separation body connected therewith are quickly separated.

[0095] Further, the separation mechanism 6 further comprises:

[0096] A sleeve 603 is slidably sleeved outside the limiting cylinder 601, and the separation spring 604 is sleeved outside the sleeve 603;

[0097] An outward turning edge is arranged at the upper end of the limiting cylinder 601, an inward turning edge is arranged at the lower end of the sleeve 603, and an outward turning edge is arranged at the upper end of the sleeve 603, and the separation spring 604 is clamped below the outward turning edge at the upper end of the sleeve 603;

[0098] When the connecting and locking mechanism 5 is triggered and unlocked, the separation spring 604 returns to deformation, drives the sleeve 603 to move upward, and then pushes the separation ring 3 to move away from the connecting seat 1, so as to promote the separation ring 3 and the separation body connected thereto to separate quickly; when the lower end of the sleeve 603 moves to the upper end of the limiting cylinder 601, the inner flange of the lower end of the sleeve 603 is clamped on the outer flange of the upper end of the limiting cylinder 601, so as to prevent the sleeve 603 from falling off completely.

[0099] The working process of the star-rocket separation device with single-point triggering and multi-point synchronous unlocking mainly includes the processes of connecting and locking, triggering and releasing, transmission unlocking, and separation, which are described in detail as follows:

[0100] In the locking state, the pin shaft 401 of the pin puller 4 is inserted into the plug-in hole 201 on the driving ring 2, the driving ring 2 is locked and cannot rotate, meanwhile, the driving spring 101 is stretched or compressed, the connecting and locking mechanism 5 is in the locking state, the plunger pin 202 on the driving ring 2 is inserted into the through hole on the release handle 505 in the connecting and locking mechanism 5, the release handle 505 is locked and cannot rotate, at this time, the separation spring 604 in the separation mechanism 6 is compressed;

[0101] When the separation body needs to be released, the pin puller 4 receives a separation signal, drives the pin shaft 401 to be pulled out of the plug-in hole 201, the driving ring 2 rotates clockwise or counterclockwise under the action of the driving spring 101, the driving ring 2 drives the release handle 505 to rotate in the opposite direction through the plunger pin 202 in the rotating process, when the release handle 505 rotates to the position that the ball 507 enters the unlocking groove 5041, the sliding block 504 can slide downward, so that the split nut 503 moves radially outward along the matching inclined surface of the sliding block 504 under the action of the pre-tightening force, the locking screw 501 can be pulled out of the split nut 503, meanwhile, the separation spring 604 in the separation mechanism 6 returns to deformation, pushes the separation ring 3 and the separation body to separate from the connecting seat 1 quickly.

[0102] The star-rocket separation device with single-point triggering and multi-point synchronous unlocking has the following advantages:

[0103] 1) The star-rocket separation device uses a shape memory alloy pin puller to replace a traditional explosive device, so that the unlocking impact of the separation device is small, repeatable and pollution-free;

[0104] 2) the star-rocket separation device drives the release handle in the connecting locking mechanism through the cooperation of the column pin and the driving spring with the driving ring and the release handle, converts the rotation of the driving ring into the rotation of the release handle in the connecting locking mechanism, thereby unlocking the connecting points, triggering the release actions of the connecting locking mechanisms in a relatively simple and stable structure, and simultaneously unlocking the connecting locking mechanisms under one trigger device, and the release synchronization is good;

[0105] 3) the star-rocket separation device has a large bearing capacity of the connecting locking mechanism by the combined design of the split nut and the ball, and the split nut has a strong bearing capacity, and on this basis, the load bearing coefficient is further improved through the design of the thread connection, the ball and the sliding block, and the final bearing capacity of the single connecting locking mechanism in the star-rocket separation device is 77 times of the unlocking force required for triggering, according to the test;

[0106] 4) the star-rocket separation device simultaneously unlocks the connecting locking mechanisms and the separation mechanism through the transmission of the driving ring by the triggering action of one pin puller, and the synchronization is good, the structure is simple, and the implementation is easy;

[0107] 5) the star-rocket separation device supports the driving ring through the support, the support can use self-lubricating materials, the upper and lower surfaces inside the support are flat, and cooperate with the surface of the driving ring to reduce the friction while supporting and limiting.

[0108] In conclusion, the star-rocket separation device for single-point triggering and multi-point synchronous unlocking has the advantages of simple and stable structure, fast unlocking, good unlocking and separation synchronization, large load bearing coefficient and small release impact,

[0109] The embodiments of the application are described above in combination with the drawings, and the embodiments and the features in the embodiments in the application can be combined with each other without conflict, the application is not limited to the above specific embodiments, and the above specific embodiments are only illustrative but not restrictive, and the person skilled in the art can make many forms under the inspiration of the application without departing from the purpose of the application and the scope protected by the claims, and all the forms belong to the protection of the application.​​​​​

Claims

1. A single-point triggered multi-point synchronous unlocking star-rocket separation device, characterized in that, The utility model relates to a single-point trigger multi-point synchronous unlocking star rocket separation device, which comprises a connecting seat (1) connected with a base, a driving ring (2) in the shape of a ring, the driving ring (2) being located on the inner side of the connecting seat (1) and being rotatably connected with the connecting seat (1), a separation ring (3) oppositely arranged with the connecting seat (1), the separation ring (3) being connected with a separation body to be separated, a pin extractor (4) arranged on the connecting seat (1), a pin shaft (401) of the pin extractor (4) being inserted into the driving ring (2) to lock the driving ring (2), a connecting locking mechanism (5) arranged between the separation ring (3) and the connecting seat (1), in the locked state, the connecting locking mechanism (5) being capable of fixedly connecting the separation ring (3) and the connecting seat (1) together, when the pin extractor (4) is triggered and the pin shaft (401) is pulled out of the driving ring (2), the driving ring (2) can trigger the connecting locking mechanism (5) by rotating to make the connecting locking mechanism (5) release the fixed connection of the separation ring (3) and the connecting seat (1), and the separation ring (3) and the separation body to be separated can be separated from the connecting seat (1), the connecting locking mechanism (5) comprises a locking screw (501), a split nut (503), a sliding block (504), a release handle (505) and a ball (507), the screw rod of the locking screw (501) is inserted into the split nut (503) after passing through the separation ring (3), the periphery of the split nut (503) is provided with the sliding block (504), the inner side wall of the sliding block (504) is a slope, the lower surface of the sliding block (504) is provided with an unlocking groove (5041), the release handle (505) is arranged on the lower side of the sliding block (504), the release handle (505) is provided with the ball (507), the release handle (505) is connected with the driving ring (2), and the release handle (505) can rotate under the driving of the driving ring (2), when the connecting locking mechanism (5) is in the locked state, the ball (507) is dislocated with the unlocking groove (5041), at this time, the sliding block (504) is limited by the ball (507) and cannot move downward, the sliding block (504) presses the split nut (503), and the split nut (503) is fixedly connected with the locking screw (501), when the driving ring (2) is released and rotates, the driving ring (2) can drive the release handle (505) to rotate, when the release handle (505) drives the ball (507) to rotate to the position of the unlocking groove (5041), the ball (507) is partially contained in the unlocking groove (5041), the sliding block (504) slides downward, the split nut (503) is separated, the locking screw (501) is pulled out of the split nut (503), and the separation ring (3) and the connecting seat (1) are separated. The single-point trigger multi-point synchronous unlocking star rocket separation device further comprises ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 2. The satellite-rocket separation device according to claim 1, characterized in that ​ A separation mechanism (6) is arranged between the connecting seat (1) and the separation ring (3), and the separation mechanism (6) is configured to push the separation ring (3) and the separation body away from the connecting seat (1) when the connecting locking mechanism (5) releases the fixed connection of the separation ring (3) and the connecting seat (1) and the separation ring (3) and the connecting seat (1) can be separated.

3. The satellite-to-rocket separation device according to claim 2, characterized in that A pin puller (4) is arranged on the connecting seat (1), and 3-6 connecting locking mechanisms (5) and 3-6 separation mechanisms (6) are arranged on the connecting seat (1) in a circumferential direction.

4. The satellite-to-rocket separation device according to claim 1, characterized in that A plurality of drive springs (101) are arranged along the circumferential direction of the connecting seat (1), one end of the drive spring (101) is fixedly connected with the connecting seat (1), and the other end is fixedly connected with the drive ring (2); When the pin shaft (401) of the pin puller (4) is inserted into the drive ring (2) and the drive ring (2) is locked, the drive spring (101) is stretched or compressed; After the pin puller (4) is triggered and the pin shaft (401) is pulled out of the drive ring (2), the drive spring (101) returns to the deformation, which can drive the drive ring (2) to rotate clockwise or counterclockwise, and trigger the connecting locking mechanism (5).

5. The satellite-to-rocket separation device according to claim 4, characterized in that A plurality of brackets (102) are arranged along the circumferential direction of the connecting seat (1), the bracket (102) is used for supporting the drive ring (2) and mounting the drive ring (2) on the inner side of the connecting seat (1); meanwhile, the bracket (102) allows the drive ring (2) to rotate freely under the driving of the drive spring (101).

6. The satellite-to-rocket separation device according to claim 1, characterized in that The drive ring (2) is provided with a plug hole (201), the pin shaft (401) of the pin puller (4) is inserted into the plug hole (201), the drive ring (2) is locked, and the pin puller (4) is a shape memory alloy pin puller.

7. The satellite-rocket separation device according to claim 1, characterized in that The connecting locking mechanism (5) further comprises: a top cover (502), a bottom cover (508) and a positioning screw (506); The top cover (502) is located on the side of the connecting locking mechanism (5) close to the separation ring (3), the bottom cover (508) is located on the side of the connecting locking mechanism (5) close to the connecting seat (1), and the top cover (502) and the bottom cover (508) are buckled together to form an outer shell of the connecting locking mechanism (5); The positioning screw (506) is located at the lower center of the connecting locking mechanism (5), the positioning screw (506) is connected with the connecting seat (1) after penetrating through the release handle (505), and the release handle (505) is rotatably connected with the positioning screw (506).

8. The satellite-to-rocket separation device according to claim 2, characterized in that The separation mechanism (6) comprises: A limiting cylinder (601), a limiting screw (602) and a separation spring (604), the limiting cylinder (601) is arranged between the connecting seat (1) and the separation ring (3), one end of the limiting cylinder (601) is fixedly connected to the connecting seat (1) by the limiting screw (602), and the other end abuts against the separation ring (3); the separation spring (604) is sleeved on the periphery of the limiting cylinder (601); When the connecting locking mechanism (5) is in the locked state, the separation spring (604) is in the compressed state; When the connecting locking mechanism (5) is triggered and unlocked, the separation spring (604) returns to the deformation, pushes the separation ring (3) to move along the path defined by the limiting cylinder (601) in the direction away from the connecting seat (1), and lifts the separation ring (3).

9. The satellite-to-rocket separation device according to claim 8, characterized in that The separation mechanism (6) further comprises: A sleeve (603) which is slidably sleeved on the outside of the limiting cylinder (601), and the separation spring (604) is sleeved on the outside of the sleeve (603); An outward turning edge is arranged at the upper end of the limiting cylinder (601), an inward turning edge is arranged at the lower end of the sleeve (603), an outward turning edge is arranged at the upper end of the sleeve (603), and the separation spring (604) is clamped on the lower side of the outward turning edge at the upper end of the sleeve (603).

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