CN101875404A - Sealed small, low-impact unlocking bolt - Google Patents
Sealed small, low-impact unlocking bolt Download PDFInfo
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- CN101875404A CN101875404A CN200910260377XA CN200910260377A CN101875404A CN 101875404 A CN101875404 A CN 101875404A CN 200910260377X A CN200910260377X A CN 200910260377XA CN 200910260377 A CN200910260377 A CN 200910260377A CN 101875404 A CN101875404 A CN 101875404A
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Abstract
密封型的小型低冲击解锁螺栓，它包括内筒(1)、剪切销(2)、楔块(3)、活塞(4)、密封圈(5)、双O型环密封挡板(6)、外筒(7)。其兼顾了小尺寸、密封型、低冲击、强连接、无污染五大特性。在分离前，使被连接体两级形成强连接；分离时可实现被连接体两级的安全快速分离，且产生较小的冲击扰动，是一种综合性能优良的火工连接分离装置，不但可供导弹及其他航天器的级间分离系统直接应用，同时为类似分离机构的设计提供了有益参考，具有良好的应用前景。
Sealed small low-impact unlocking bolt, which includes inner cylinder (1), shear pin (2), wedge (3), piston (4), sealing ring (5), double O-ring sealing baffle (6 ), outer cylinder (7). It takes into account the five characteristics of small size, sealed type, low impact, strong connection, and pollution-free. Before separation, make the two stages of the connected body form a strong connection; when separating, it can realize the safe and fast separation of the two stages of the connected body, and produce a small impact disturbance. It is a pyrotechnic connection and separation device with excellent comprehensive performance. It can be directly applied to the interstage separation system of missiles and other spacecraft, and at the same time provides a useful reference for the design of similar separation mechanisms, and has a good application prospect.
Description
Affiliated technical field
The present invention relates to a kind of miniaturization release screw bolt that has high sealing performance, be a kind of small size, strong connect, lowly impact, free of contamination firer connects disengagement gear.
Background technology
Release screw bolt plays a part very crucial in the stage separation system of guided missile and other spacecrafts, and its success or failure are directly connected to the task of spacecraft flight and finish.Up to the present, the research of release screw bolt disengagement gear with use comparative maturity, but domestic less about small size, closed type, the low release screw bolt disengagement gear research of impacting.
Along with the maturation gradually of guided missile and all kinds of spacecrafts, also more and more higher to the requirement of piece-rate system, the development demand of supporting with it firer's disengagement gear is more and more urgent.Connect disengagement gear for existing firer, scantling of structure and bearing capacity can not meet the demands on the one hand; A little less than the leak tightness, separate and impact greatly on the other hand.Therefore, be necessary that the good low impact firer of small design size and sealing property connects disengagement gear.This also is the thinking that the present invention proposes.
Summary of the invention
For the reliable connection that realizes guided missile and other spacecraft inter-stages with separate, the present invention has designed a kind of small low-impact release screw bolt disengagement gear of closed type, its Joint strenght is higher and pollution-free.
The technical solution adopted for the present invention to solve the technical problems is: (1) selects the higher material of intensity for use, and preliminary design goes out a kind of firer's release screw bolt disengagement gear; Under the prerequisite that guarantees more than the single assembly Joint strenght 12kN,, each element size and number are progressively optimized by the Matlab program of establishment voluntarily based on optimal design thought.According to optimizing the result, finally adopt the bindiny mechanism of three metal voussoirs of circumferential 120 ° of distributions as urceolus and inner core, make device assemble back total length 52.5mm (not containing electric initiator) fully, maximum outside diameter 16mm has realized the miniaturization of device.(2) by before installing inner two O type ring crammed plates that embed, apparatus of the present invention separated, piston and double O-ring seal baffle plate contact matching; After the separation, piston breaks away from urceolus, and the double O-ring seal baffle plate is stuck in urceolus inside, and the driving combustion gas that stops electric initiator to produce leaks, and has realized the high leakproofness and the nonstaining property of device.(3) by shear pin fixed outer cylinder, inner core and piston, anti-locking apparatus internal mechanism arbitrarily rotates, and has guaranteed stationarity and stability that device cooperates.(4) based on " strong connection, weak solution lock " thought, use the connection locking mechanism before the higher metal voussoir of tensile strength separates as apparatus of the present invention, it is a plane contact, can reach the Joint strenght more than the 19kN, has realized strong connection.(5) with the pre-tightening mechanism of shear pin when separating, cut off shear pin by piston, inner core successively secondary and realize that release separates, reduced greatly to separate required power, and allow shock vibration when separating below 2Ns, realized that the weak solution lock impacts with low.
Beneficial effect of the present invention: this release screw bolt has been taken into account small size, closed type, low impact, strong connection, pollution-free five big characteristics, can guarantee that the chorista two-stage reliably connects and separates safely and fast, the firer who is a kind of high comprehensive performance connects disengagement gear, can directly use for the stage separation system of guided missile and other spacecrafts, design for similar separation device simultaneously provides useful reference, has a good application prospect.
Description of drawings
The invention will be further described below in conjunction with accompanying drawing and example.
Fig. 1 is the constructional drawing of the small low-impact release screw bolt of closed type.
1. inner cores among the figure, 2. shear pin, 3. voussoir, 4. piston, 5. seal ring, 6. double O-ring seal baffle plate, 7. urceolus, 8. electric initiator (be not included in the device design, be the approved product of selecting for use).
Fig. 2 is the separation process figure of the small low-impact release screw bolt of closed type.
Among the figure be with a-b-c-d-e-f order 6 width of cloth picture presentations six state of kinematic motions in the working process of the present invention, set forth its separation principle.A. initial condition, b. cuts off shear pin for the first time, and the c. voussoir begins to fall, and d. cuts off shear pin for the second time, and the e. voussoir thoroughly falls, and f. separates fully.
The specific embodiment
(1) select the higher material of intensity for use, preliminary design goes out a kind of firer's release screw bolt disengagement gear; Under the prerequisite that guarantees more than the single assembly Joint strenght 12kN,, each element size and number are progressively optimized by the Matlab program of establishment voluntarily based on optimal design thought.According to optimizing the result, finally adopt the bindiny mechanism of circumferential 1,200 three metal voussoirs that distribute as urceolus and inner core, make device assemble back total length 52.5mm (not containing electric initiator) fully, maximum outside diameter 16mm has realized the miniaturization of device.(2) by before installing the inner double O-ring seal baffle plate that embeds, apparatus of the present invention separated, piston and double O-ring seal baffle plate contact matching; After the separation, piston breaks away from urceolus, and the double O-ring seal baffle plate is stuck in urceolus inside, and the driving combustion gas that stops electric initiator to produce leaks, and has realized the high leakproofness and the nonstaining property of device.(3) by shear pin fixed outer cylinder, inner core and piston, anti-locking apparatus internal mechanism arbitrarily rotates, and has guaranteed stationarity and stability that device cooperates.(4) based on " strong connection, weak solution lock " thought, use the connection locking mechanism before the higher metal voussoir of tensile strength separates as apparatus of the present invention, it is a plane contact, can reach the Joint strenght more than the 19kN, has realized strong connection.(5) with the pre-tightening mechanism of shear pin when separating, cut off shear pin by piston, inner core successively secondary and realize that release separates, reduced greatly to separate required power, and allow shock vibration when separating below 2Ns, realized that the weak solution lock impacts with low.
In Fig. 1, inner core (1) one end is connected the cabin section with guided missile or spacecraft and is threaded, and the other end positions installation by short locating dowel pin and piston (4); Circumferential 120 ° distribute three voussoirs of installation (3) in three holes that inner core (1) is reserved, and in the urceolus (7) of packing into together, eject locating dowel pin with shear pin (2), form fixing assembling between urceolus (7), inner core (1), piston (4) three; Go up installation two seal rings (5) at double O-ring seal baffle plate (6), and the urceolus (7) of packing into together, until contacting with the thin end of piston (4), electric initiator (8) is installed in urceolus (7) end by screw thread fit at last, the front end of while urceolus (7) is connected the cabin section and carries out contraposition cooperation installation with guided missile or spacecraft, form to connect.
Fig. 2 with a-b-c-d-e-f be the order 6 width of cloth picture presentations principle of work of the present invention be: before the separation, inner core (2) is connected the cabin section with guided missile or spacecraft and is threaded, urceolus (7) be connected the cabin section and carry out contraposition and cooperate to install, form the chorista two-stage and connect initial condition (a); During separation, produce high-temperature high-pressure fuel gas expansion acting after firing device (8) detonates, promote piston (4) and move, cut off shear pin, arrival state (b) for the first time; Piston (4) continues motion, when move to piston (4) groove and voussoir (3) over against the time owing to be subjected to urceolus (7) inclined-plane backward extrusion effect, voussoir (3) begins to drop in piston (4) groove, arrival state (c); Voussoir (3) moves under the promotion of double O-ring seal baffle plate (6) with piston (4), promotes inner core (1) up to double O-ring seal baffle plate (6) and cuts off shear pin, arrival state (d) for the second time; Along with shear pin (2) cut off thorough whereabouts with voussoir (3) fully, inner core begins to hightail urceolus, arrival state (e); Finally, inner core (1) carries piston (4) and separates arrival state (f) fully with urceolus (7) with three voussoirs (3) that fall.
Claims (5)
1. the small low-impact release screw bolt of closed type is characterized in that: comprise inner core (1), shear pin (2), voussoir (3), piston (4), seal ring (5), double O-ring seal baffle plate (6), urceolus (7).
2. the small low-impact release screw bolt of closed type according to claim 1 is characterized in that: adopt circumferentially at interval three metal voussoirs (3) of 120 ° of distributions to realize the miniaturization of installing as the catch gear that is connected of urceolus (7) with inner core (1).
3. the small low-impact release screw bolt of closed type according to claim 1 and 2 is characterized in that: before the separation, and piston (4) and double O-ring seal baffle plate (6) contact matching; During separation, double O-ring seal baffle plate (6) promotes piston (4) motion; After the separation, piston (4) breaks away from urceolus (7), and double O-ring seal baffle plate (6) is stuck in urceolus (7) inside, guarantees that the driving combustion gas that electric initiator produces does not leak, and has realized the high leakproofness and the nonstaining property of device.
4. according to the small low-impact release screw bolt of each described closed type of claim 1-3, it is characterized in that: by shear pin (2) fixed outer cylinder (7), inner core (1) and piston (4), anti-locking apparatus internal mechanism arbitrarily rotates.
5. according to the small low-impact release screw bolt of each described closed type of claim 1-4, it is characterized in that: cut off shear pin (2) by piston (4), inner core (1) successively secondary and realize that release separates, reduce to separate required drive, realized the low impact of device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910260377A CN101875404B (en) | 2009-12-17 | 2009-12-17 | Sealed small low-impact release screw bolt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910260377A CN101875404B (en) | 2009-12-17 | 2009-12-17 | Sealed small low-impact release screw bolt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101875404A true CN101875404A (en) | 2010-11-03 |
| CN101875404B CN101875404B (en) | 2012-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910260377A Expired - Fee Related CN101875404B (en) | 2009-12-17 | 2009-12-17 | Sealed small low-impact release screw bolt |
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| CN (1) | CN101875404B (en) |
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| CN102155883A (en) * | 2010-12-27 | 2011-08-17 | 北京理工大学 | Small-size quickly separated firer-unlocking bolt |
| CN103010488A (en) * | 2012-11-27 | 2013-04-03 | 中国人民解放军国防科学技术大学 | Micro-nano satellite unlocking and separating device |
| FR2983271A1 (en) * | 2011-11-30 | 2013-05-31 | Peugeot Citroen Automobiles Sa | CONNECTING ROD WITH PROGRAMMED RUPTURE MEANS, IN PARTICULAR FOR THE CONNECTION BETWEEN THE MOTOR POWERTRAIN AND THE CRADLE OF A VEHICLE |
| CN103615450A (en) * | 2013-12-02 | 2014-03-05 | 北京化工大学 | Spacecraft unlocking and separating device |
| CN104214186A (en) * | 2013-05-31 | 2014-12-17 | 中国人民解放军国防科学技术大学 | Heat knife type bolt device capable of achieving unlocking and releasing |
| CN105241300A (en) * | 2015-10-10 | 2016-01-13 | 湖北三江航天红林探控有限公司 | Cutting-off type locking device |
| CN105518244A (en) * | 2013-10-09 | 2016-04-20 | 哈利伯顿能源服务公司 | Dual Configuration Shear Bolts |
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| CN106481633A (en) * | 2016-11-02 | 2017-03-08 | 北京空间机电研究所 | A kind of low impact high-mechanic firer's release screw bolt |
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| CN106853871A (en) * | 2015-12-08 | 2017-06-16 | 上海机电工程研究所 | A kind of wedge lock separating mechanism |
| CN106979896A (en) * | 2017-03-22 | 2017-07-25 | 山西汾西重工有限责任公司 | The unblock separate metering system of two mechanical snap cylinders |
| CN107191459A (en) * | 2017-06-09 | 2017-09-22 | 北京空间飞行器总体设计部 | A kind of strong contained explosion bolt device |
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| CN107235154A (en) * | 2017-06-22 | 2017-10-10 | 中国人民解放军总参谋部第六十研究所 | A kind of machine umbrella separating mechanism of firer's release |
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| CN108284970A (en) * | 2017-12-27 | 2018-07-17 | 北京空间机电研究所 | One kind can carry the curved load firer separating mechanism of high intensity tension and compression and separation method |
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| CN110873545A (en) * | 2018-09-02 | 2020-03-10 | 孝感定原电子科技有限公司 | Initiating explosive actuator |
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| CN112665468B (en) * | 2020-12-21 | 2023-08-15 | 兰州空间技术物理研究所 | Novel strong locking and weak unlocking mechanism |
| CN112665468A (en) * | 2020-12-21 | 2021-04-16 | 兰州空间技术物理研究所 | Novel strong locking and weak unlocking mechanism |
| CN113428388A (en) * | 2021-06-08 | 2021-09-24 | 上海宇航系统工程研究所 | Flywheel mechanism for belt connection unlocking device |
| CN113428388B (en) * | 2021-06-08 | 2022-08-02 | 上海宇航系统工程研究所 | Flywheel mechanism for belt connection unlocking device |
| CN113581498A (en) * | 2021-06-23 | 2021-11-02 | 北京宇航系统工程研究所 | Explosion impact resistant and inward cutting separating device |
| CN113927534A (en) * | 2021-11-16 | 2022-01-14 | 中北大学 | An underwater pin pulling device |
| CN114313320A (en) * | 2021-12-10 | 2022-04-12 | 北京理工大学 | A multi-stage buffer device for separating pyrotechnic components for aerospace |
| KR20240022834A (en) * | 2022-08-12 | 2024-02-20 | 국방과학연구소 | Pyro-bolt |
| KR102729104B1 (en) * | 2022-08-12 | 2024-11-13 | 국방과학연구소 | Pyro-bolt |
| CN116428917A (en) * | 2022-10-24 | 2023-07-14 | 南京理工大学 | Composite cylinder relative motion control mechanism and application method thereof |
| CN116428917B (en) * | 2022-10-24 | 2025-08-19 | 南京理工大学 | Composite cylinder relative motion control mechanism and application method thereof |
| CN117416534A (en) * | 2023-12-19 | 2024-01-19 | 四川航天川南火工技术有限公司 | A gap-maintaining pyrotechnic separation and unlocking device |
| CN117416534B (en) * | 2023-12-19 | 2024-03-26 | 四川航天川南火工技术有限公司 | Gap-keeping type fire-work-division separation lock device |
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|---|---|
| CN101875404B (en) | 2012-10-24 |
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