CN113247314B - Tether ejection mechanism suitable for passive release of space tether system - Google Patents
Tether ejection mechanism suitable for passive release of space tether system Download PDFInfo
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- CN113247314B CN113247314B CN202110613713.5A CN202110613713A CN113247314B CN 113247314 B CN113247314 B CN 113247314B CN 202110613713 A CN202110613713 A CN 202110613713A CN 113247314 B CN113247314 B CN 113247314B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64G—COSMONAUTICS; VEHICLES OR EQUIPMENT THEREFOR
- B64G1/00—Cosmonautic vehicles
- B64G1/22—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles
- B64G1/64—Systems for coupling or separating cosmonautic vehicles or parts thereof, e.g. docking arrangements
- B64G1/648—Tethers
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Abstract
The invention relates to the technical field of space rope systems, in particular to a rope fastening ejection mechanism suitable for passively releasing a space rope system. The invention can achieve the effects of avoiding the damage of the tether and enhancing the reliability of the ejection device.
Description
Technical Field
The invention relates to the technical field of space rope system systems, in particular to a rope system ejection mechanism suitable for passively releasing a space rope system.
Background
The space tether system is a novel space flight system, and has huge application potential in the aspects of space garbage cleaning, artificial gravity, deep space exploration and the like. The basic structure of the space tether system is that a thin and long tether is connected with two spacecrafts, the total length of the tether is different according to application scenes, the range of the total length of the tether can be from hundreds of meters to hundreds of kilometers, and the diameter of the tether is about 1-2 mm. When the spatial tether system is assembled on the ground, the tethers need to be wound on a tether shaft or stacked, and after the system is launched into a rail, the tethers inside are released, so that two tether release modes, namely active release and passive release, are provided. Releasing the tether using a powered mechanism or device of the system itself is referred to as active release and releasing the tether using the force of gravity gradient is referred to as passive release. The passive release mode system is simple in structure and high in reliability, the space tether task is mainly realized in the mode at present, but the space tether task depends on the characteristic of gravity gradient force release, so that the tether is initially released to obtain certain kinetic energy, the tether can reach a certain length, and sufficient gravity gradient force is obtained to drive the tether to be released. When the space tether system is started by passive release, an ejector is often used for enabling the tether to obtain kinetic energy.
At present, a space rope system is mostly in a mode of ejecting by utilizing an initiating explosive device, an explosive bolt is used for fixing a body to be ejected on an ejection platform, and a spring is arranged on the ejection platform and tightly pressed between the ejection platform and the body to be ejected. When ejection is carried out, gunpowder in the explosive bolt is exploded through a circuit signal to break the explosive bolt, and after the constraint of the explosive bolt is lost, the ejection body is ejected out by a compressed spring. Although the explosive ejection of initiating explosive devices is a mature mode, the explosion position of the initiating explosive device is close to a tether of a space tether system, and the surface of the tether is easily damaged and even broken; meanwhile, to ensure the ejection stability, two or more explosive bolts are generally used for fixing, and the increase of the number also causes the reliability of the ejection mode to be reduced, so that an ejection mechanism suitable for a space tether system needs to be designed.
Disclosure of Invention
The invention aims to provide a tether ejection mechanism suitable for passively releasing a space tether system, so as to solve the problems, avoid damaging a tether and enhance the reliability of an ejection device.
In order to achieve the purpose, the invention provides the following scheme:
the utility model provides a tether ejection mechanism suitable for passive release of space tether system, includes the base, a plurality of subassemblies that launch of base top fixedly connected with are a plurality of launch the subassembly top elasticity of launching is provided with the projectile body base, the base bottom with be equipped with a plurality of joint release subassemblies between the projectile body base outside, it is a plurality of joint release subassembly and a plurality of it is corresponding to launch the subassembly position, and is a plurality of joint release subassembly cover is equipped with the messenger the rope subassembly that joint release subassembly realized the release.
Preferably, the ejection assembly comprises a pressure spring sleeve, the pressure spring sleeve is fixedly connected above the base, a pressure spring is arranged inside the pressure spring sleeve, one end of the pressure spring is fixedly connected with the base, and the other end of the pressure spring is in contact connection with the ejector base.
Preferably, joint release assembly includes first fixed hook, first fixed hook colludes even has the fixed hook of second, first fixed hook with the rotation of compression spring sleeve outside is connected, the fixed hook fixed connection of second is in projectile base below.
Preferably, the rope subassembly includes an extension spring section of thick bamboo, extension spring section of thick bamboo fixed connection be in the base top, extension spring section of thick bamboo inner wall fixedly connected with extension spring, extension spring fixedly connected with tether, the tether both ends respectively with extension spring both ends fixed connection, wear to be equipped with the rope fuse on the tether, the tether is walked around a plurality of the first fixed hook outside sets up.
Preferably, an opening is formed in one end, close to the projectile body base, of the compression spring sleeve, the upper portion of the compression spring sleeve is divided into two semi-arc structures through the opening, a plurality of through holes are vertically formed in each semi-arc structure, the through holes are perpendicular to the axis of the compression spring sleeve, the through holes in the two semi-arc structures correspond to each other, and a lock needle penetrates through one pair of the through holes.
Preferably, the projectile body base is provided with a plurality of guide holes, each guide hole is of a semicircular structure, and the guide holes are matched with the semicircular structures.
Preferably, a second support is fixedly connected to the outer side of the pressure spring sleeve, the second support is perpendicular to the axis of the pressure spring sleeve, one end, far away from the pressure spring sleeve, of the second support is rotatably connected with a pin shaft, and the pin shaft is rotatably connected with the upper portion of the first fixing hook;
the base top fixedly connected with first support, first support with first fixed hook position is corresponding, first support the base is mutually perpendicular, first support is kept away from base one end with second support fixed connection, lower part fixedly connected with pressure spring support in the first support, pressure spring support with first fixed hook fixedly connected with second pressure spring.
Preferably, a plurality of the ejection assemblies are arranged at equal intervals along the edge of the base, and the number of the ejection assemblies is at least three.
Preferably, the base and the projectile base are respectively provided with a wiring hole in the center.
Preferably, the end part of the second fixing hook is provided with a plurality of hook teeth matched with the first fixing hook, the number of the hook teeth is at least two, and the hook teeth are arranged at equal intervals along the axial direction of the compression spring sleeve.
The invention has the following technical effects:
1. according to the tether ejection mechanism suitable for passive release of the space tether system, the projectile base and the base are fixed through the clamping release assembly, the ejection assembly provides ejection power, the rope assembly controls the clamping release assembly to be disengaged, ejection of the projectile base is achieved through a mechanical structure, and the tether ejection mechanism is simple and reliable; the design not only facilitates the installation of the projectile base, but also ensures that the tether is not damaged in the release process, and is more suitable for the tether release of a space tether system than the traditional initiating explosive device ejection mode.
2. The ejection assembly elastic force can be adjusted and connected according to needs, and the adjusting mode is simple. The traditional initiating explosive device ejection mechanism is difficult to adjust the elasticity after being processed, and compared with the traditional initiating explosive device ejection mechanism, the traditional initiating explosive device ejection mechanism is wider and looser in processing design requirements.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a sectional view taken along line A-A of FIG. 2;
fig. 4 is a partially enlarged view of fig. 1 at B.
Wherein, 1, a base; 2. a first fixed hook; 3. a rope; 4. a rope fuse; 5. a tension spring; 6. a tension spring barrel; 7. a projectile base; 8. a second fixed hook; 9. a first pressure spring; 10. a compression spring sleeve; 11. locking the needle; 12. a pressure spring bracket; 13. a second pressure spring; 14. a first bracket; 15. a second support.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description thereof.
Referring to fig. 1-4, the tether ejection mechanism suitable for passive release of a spatial tether system comprises a base 1, wherein a plurality of ejection assemblies are fixedly connected above the base 1, an ejection body base 7 is elastically arranged above the ejection assemblies, a plurality of clamping release assemblies are arranged between the bottom of the base 1 and the outer side of the ejection body base 7 and correspond to the ejection assemblies in position, and rope assemblies enabling the clamping release assemblies to release are sleeved on the clamping release assemblies. The base 1 serves as a carrying base for the ejection mechanism and also as a component for connecting the ejection mechanism to other tether release mechanisms (e.g., tether brake mechanism, tether storage mechanism, etc.). The ejection body base 7 and the base 1 are fixed through the clamping release assembly, the ejection assembly provides ejection power, the rope assembly controls the clamping release assembly to be disengaged, ejection of the ejection body base 7 is achieved through a mechanical structure, and the ejection device is simple and reliable; the design not only facilitates the installation of the projectile body base 7, but also ensures that the tether is not damaged in the release process, and compared with the traditional initiating explosive device ejection mode, the design is more suitable for the tether release of a space tether system; the elasticity of the ejection assembly can be adjusted according to needs, the adjustment mode is simple, the traditional initiating explosive device ejection mechanism is difficult to adjust the elasticity after machining is completed, and compared with the traditional initiating explosive device ejection mechanism, the ejection mechanism is wider in machining design requirements.
Further optimize the scheme, launch the subassembly and include pressure spring sleeve 10, pressure spring sleeve 10 fixed connection is in base 1 top, and pressure spring sleeve 10 is inside to be equipped with first pressure spring 9, 9 one ends of first pressure spring and base 1 fixed connection, and the 9 other ends of first pressure spring are connected with the contact of projectile base 7. First pressure spring 9 provides power for launching the subassembly, and suitable model can be selected according to the needs of elasticity size to first pressure spring 9, and pressure spring sleeve 10 outer wall cooperatees with projectile body base 7, plays the guide effect of installation pressure spring sleeve 10 in-process.
Further optimize the scheme, joint release subassembly includes first fixed hook 2, and first fixed hook 2 colludes even has second fixed hook 8, and first fixed hook 2 rotates with the pressure spring sleeve 10 outside to be connected, and second fixed hook 8 fixed connection is in projectile body base 7 below. When first fixed hook 2 and second fixed hook 8 colluded each other even, projectile body base 7 is in and waits to launch the state, and when first fixed hook 2 and second fixed hook 8 throw off, projectile body base 7 is launched out by the first pressure spring 9 that is in compression state, and projectile body base 7 drives the tether system and extends to in the space.
Further optimize scheme, rope assembly includes an extension spring section of thick bamboo 6, and 6 fixed connection of an extension spring section of thick bamboo are in 1 top of base, and 6 inner wall fixedly connected with extension springs 5 of an extension spring section of thick bamboo, 5 fixedly connected with ropes 3 of extension springs, 3 both ends of rope respectively with 5 both ends fixed connection of extension springs, wear to be equipped with rope fuse 4 on the rope 3, rope 3 bypasses the setting in the 2 outsides of a plurality of first fixed hooks. Rope fuse 4 is by satellite power supply, the preferred nylon rope of rope 3, when needs launch projectile body base 7, rope fuse 4 fuses rope 3, and rope 3 loses the constraint effect to first fixed hook 2, and first fixed hook 2 and second fixed hook 8 break away from to launch projectile body base 7, 4 internally mounted of rope fuse have the heating wire, and the heating wire is generated heat by satellite power supply can be with 3 fuses of rope.
Further optimize the scheme, the pressure spring sleeve 10 is close to projectile body base 7 one end and has been seted up the opening, and the opening is cut apart into two semi-arc structures with pressure spring sleeve 10 upper portion, and semi-arc structure is equipped with a plurality of through-holes along vertical, and the through-hole is perpendicular with pressure spring sleeve 10 axis, and two through-holes on the semi-arc structure are corresponding each other, and lock needle 11 is worn to be equipped with by one of them pair of through-hole. The lock pin 11 is used for locking the projectile base 7 to play a role in safety, and the lock pin 11 prevents the projectile base 7 from popping up accidentally; the lock pin 11 is removed manually before the system is launched or, in the case of conditional, by the astronaut when the space experiment is carried out.
According to the further optimized scheme, the projectile body base 7 is provided with a plurality of guide holes, the guide holes are of a semicircular structure, and the guide holes are matched with the semi-arc structure at the upper end of the compression spring sleeve 10. The guide hole is convenient for the installation of projectile body base 7, plays the guide effect.
According to the further optimized scheme, a second support 15 is fixedly connected to the outer side of the pressure spring sleeve 10, the second support 15 is perpendicular to the axis of the pressure spring sleeve 10, one end, far away from the pressure spring sleeve 10, of the second support 15 is rotatably connected with a pin shaft, and the pin shaft is rotatably connected with the upper portion of the first fixing hook 2;
the base 1 top fixedly connected with first support 14, first support 14 is corresponding with first fixed hook 2 positions, and first support 14 base 1 is mutually perpendicular, and base 1 one end and second support 15 fixed connection are kept away from to first support 14, and lower part fixedly connected with pressure spring support 12, pressure spring support 12 and first fixed hook 2 fixedly connected with second pressure spring 13 in first support 14. When the rope 3 is fused, the second pressure spring 13 pulls the first fixing hook 2 to move towards the end far away from the first fixing hook 2, so that the first fixing hook 2 and the second fixing hook 8 are separated, and the projectile base 7 is released.
Further optimize the scheme, a plurality of ejection assemblies are arranged along the edge of the base 1 at equal intervals, and the number of the ejection assemblies is at least three.
In a further optimized scheme, the centers of the base 1 and the projectile base 7 are respectively provided with a wiring hole. The routing hole is used to pass through the long tether of the tether system.
Further optimize the scheme, 8 tip of second fixed hook are equipped with a plurality ofly and first fixed hook 2 matched with collude the tooth, collude the tooth quantity and be two at least, collude the tooth and arrange along pressure spring sleeve 10 axis direction equidistant. According to the requirement of elasticity, the second fixed hook 8 can be selected to be connected with different hook teeth of the first fixed hook 2, so that the compression amount of the first pressure spring 9 is adjusted, and different elasticity is obtained.
Compared with the prior art, the invention has the following advantages:
1. the invention discloses a tether ejection mechanism suitable for passively releasing a space tether system.A projectile base 7 is fixed through a simple mechanical structure, and the projectile base 7 can be released without initiating explosive devices. The design not only facilitates the installation of the projectile base 7, but also ensures that the tether is not damaged in the release process, and is more suitable for the tether release of a space tether system than the traditional initiating explosive device ejection mode.
2. The rope-tied ejecting mechanism suitable for passively releasing the space rope-tied system is simple in mechanical structure, only one nylon rope needs to be fused for ejecting, and the rope-tied ejecting mechanism is higher in reliability than a traditional initiating explosive device ejecting mode.
3. The invention discloses a tether ejection mechanism suitable for passively releasing a space tether system, which can conveniently adjust the ejection speed by increasing or decreasing the compression amount of a first pressure spring 9, and the specification of the first pressure spring 9 is required to be changed for adjustment only when needed. The compression amount of the first pressure spring 9 is difficult to adjust after the traditional initiating explosive device ejection mechanism is processed and installed, and compared with the traditional initiating explosive device ejection mechanism, the requirement on processing and design is looser.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience of description of the present invention, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The above-described embodiments are only intended to illustrate the preferred embodiments of the present invention, and not to limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.
Claims (8)
1. A tether ejection mechanism suitable for passive release of a space tether system is characterized in that: the ejection device comprises a base (1), wherein a plurality of ejection assemblies are fixedly connected above the base (1), an ejection body base (7) is elastically arranged above the plurality of ejection assemblies, a plurality of clamping release assemblies are arranged between the bottom of the base (1) and the outer side of the ejection body base (7), the plurality of clamping release assemblies correspond to the plurality of ejection assemblies in position, and a rope assembly for enabling the clamping release assemblies to release is sleeved on the plurality of clamping release assemblies;
the ejection assembly comprises a pressure spring sleeve (10), the pressure spring sleeve (10) is fixedly connected above the base (1), a first pressure spring (9) is arranged in the pressure spring sleeve (10), one end of the first pressure spring (9) is fixedly connected with the base (1), and the other end of the first pressure spring (9) is in contact connection with the ejection body base (7);
the pressure spring sleeve (10) are close to projectile base (7) one end has been seted up the opening, the opening will two semi-arc structures are cut apart into on pressure spring sleeve (10) upper portion, semi-arc structure is equipped with a plurality of through-holes along vertical, the through-hole with pressure spring sleeve (10) axis is perpendicular, two on the semi-arc structure the through-hole corresponds each other, and one of them is a pair of lock needle (11) are worn to be equipped with by the through-hole.
2. The tether ejection mechanism of claim 1, wherein the tether ejection mechanism is adapted for passive release of a spatial tether system, and further comprises: the joint release assembly comprises a first fixing hook (2), the first fixing hook (2) is hooked with a second fixing hook (8), the first fixing hook (2) is rotatably connected with the outer side of the compression spring sleeve (10), and the second fixing hook (8) is fixedly connected below the projectile base (7).
3. The tether ejection mechanism of claim 2, wherein the tether ejection mechanism is adapted for passive release of a spatial tether system, and further comprises: the rope subassembly includes extension spring section of thick bamboo (6), extension spring section of thick bamboo (6) fixed connection be in base (1) top, extension spring section of thick bamboo (6) inner wall fixedly connected with extension spring (5), extension spring (5) fixedly connected with rope (3), rope (3) both ends respectively with extension spring (5) both ends fixed connection, wear to be equipped with rope fuse (4) on rope (3), rope (3) are walked around a plurality of first fixed hook (2) outside sets up.
4. The tether ejection mechanism of claim 1, wherein the tether ejection mechanism is adapted for passive release of a spatial tether system, and further comprises: the projectile body base (7) is provided with a plurality of guide holes, each guide hole is of a semicircular structure, and the guide holes are matched with the semicircular structures.
5. The tether ejection mechanism of claim 2, wherein the tether ejection mechanism is adapted for passive release of a spatial tether system, and further comprises: a second support (15) is fixedly connected to the outer side of the pressure spring sleeve (10), the second support (15) is perpendicular to the axis of the pressure spring sleeve (10), one end, far away from the pressure spring sleeve (10), of the second support (15) is rotatably connected with a pin shaft, and the pin shaft is rotatably connected with the upper portion of the first fixing hook (2);
base (1) top fixedly connected with first support (14), first support (14) with first fixed hook (2) position is corresponding, first support (14) base (1) is mutually perpendicular, keep away from first support (14) base (1) one end with second support (15) fixed connection, lower part fixedly connected with pressure spring support (12) in first support (14), pressure spring support (12) with first fixed hook (2) fixedly connected with second pressure spring (13).
6. The tether ejection mechanism of claim 1, wherein the tether ejection mechanism is adapted for passive release of a spatial tether system, and further comprises: the ejection assemblies are arranged at equal intervals along the edge of the base (1), and the number of the ejection assemblies is at least three.
7. The tether ejection mechanism of claim 1, wherein the tether ejection mechanism is adapted for passive release of a spatial tether system, and further comprises: the centers of the base (1) and the projectile body base (7) are respectively provided with a wiring hole.
8. The tether ejection mechanism of claim 2, wherein the tether ejection mechanism is adapted for passive release of a spatial tether system, and further comprises: the end part of the second fixing hook (8) is provided with a plurality of hook teeth matched with the first fixing hook (2), the number of the hook teeth is at least two, and the hook teeth are arranged at equal intervals along the axial direction of the pressure spring sleeve (10).
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| CN202110613713.5A CN113247314B (en) | 2021-06-02 | 2021-06-02 | Tether ejection mechanism suitable for passive release of space tether system |
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| CN202110613713.5A CN113247314B (en) | 2021-06-02 | 2021-06-02 | Tether ejection mechanism suitable for passive release of space tether system |
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| CN102991731A (en) * | 2012-12-17 | 2013-03-27 | 北京理工大学 | Flying mesh catapulting device for acquiring discarded spacecraft |
| CN103964001B (en) * | 2014-03-28 | 2015-12-30 | 南京航空航天大学 | Small-sized tethered satellite ejection mechanism and catapult technique thereof |
| CN108415449B (en) * | 2018-05-21 | 2020-05-08 | 北京航空航天大学 | Device for unfolding, recovering and tension controlling tether of space satellite system |
| CN109625328A (en) * | 2018-12-12 | 2019-04-16 | 上海卫星装备研究所 | Fuse Type compresses release device |
| EA038352B1 (en) * | 2019-07-26 | 2021-08-12 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Омский государственный технический университет" | Method to de-orbit large space debris and device to implement it |
| CN111439398B (en) * | 2020-03-09 | 2022-06-24 | 南京航空航天大学 | Controllable self-protection small rope system ejection release mechanism |
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