CN114132528B - Flexible sail unfolding device - Google Patents
Flexible sail unfolding device Download PDFInfo
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- CN114132528B CN114132528B CN202111441562.6A CN202111441562A CN114132528B CN 114132528 B CN114132528 B CN 114132528B CN 202111441562 A CN202111441562 A CN 202111441562A CN 114132528 B CN114132528 B CN 114132528B
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- 230000007246 mechanism Effects 0.000 claims abstract description 131
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Classifications
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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
- B64G1/24—Guiding or controlling apparatus, e.g. for attitude control
- B64G1/242—Orbits and trajectories
- B64G1/2427—Transfer orbits
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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
- B64G1/222—Parts of, or equipment specially adapted for fitting in or to, cosmonautic vehicles for deploying structures between a stowed and deployed state
Abstract
The invention discloses a flexible sail deployment device, which comprises a shell mechanism, a trigger mechanism, a mast deployment mechanism, a sail storage mechanism and a flexible sail; the flexible sail is folded and arranged in the sail storage mechanism, the fixed end is fixedly connected with the Chu Fan mechanism, the free end is fixedly connected with the mast unfolding mechanism, and the triggering mechanism is used for releasing the limitation of the sail storage mechanism on the flexible sail; the mast unfolding mechanism comprises a mast assembly and a guide assembly; the mast assembly comprises a mast and a central winding drum, the mast assembly comprises two back-to-back elastic masts, the masts are wound on the outer circumference of the central winding drum, the masts can be automatically stretched into a linear type in a free state, and a reset interface is reserved on the central winding drum. The flexible sail deployment device can overcome the defects of the prior art, realizes that the large flexible sail surface is easy to fold and store in the launching stage, does not need an additional power source in the in-orbit deployment process, has a safe and reliable deployment mode, and does not cause potential safety hazards to the launching process and the in-orbit working process of a satellite provided with the flexible sail deployment device.
Description
Technical Field
The invention relates to the technical field of micro-nano satellites, in particular to a flexible sail deployment device for micro-nano satellite off-orbit.
Background
With the development of high and new technologies such as microelectronics, micro-electromechanics, new materials, advanced manufacturing and the like, the small satellite technology is developed suddenly and rapidly, and becomes one of engines leading the development of the aerospace technology, the number of small satellites is increased explosively in recent years, and the safety of an on-orbit spacecraft is seriously threatened. To reduce the threat of satellite numbers to on-orbit spacecraft, the institutional space debris committee has been required in the IADC space debris mitigation guidelines, and the low-orbit spacecraft should be removed within 25 years after its mission is completed in order to re-enter the atmosphere for burnout.
Currently, the main off-orbit modes of satellites include propulsion technology, inflatable balloon technology, electrodynamic tethers, off-orbit sails, and the like. However, due to the limitations of the volume and resources of microsatellites, some off-orbit techniques suitable for conventional satellites are difficult to apply. The propulsion technology occupies some extra propellant on the satellite, increases the quality of the satellite, and also requires continuous thrust vector control in the off-orbit stage, which puts higher demands on the life of other subsystems on the satellite, in particular power supplies and solar panels. The inflatable ball technology needs to carry a certain supercharging device on the satellite, brings certain potential safety hazards to satellite emission and long-time work, and also shortens the service life of the technology due to unavoidable gas leakage caused by high-pressure gas. The electrodynamic tether is a force generated by cutting magnetic force lines of a geomagnetic field by using a conductive rope moving at a high speed and perpendicular to the direction of the tether and the local geomagnetic field, and has a certain limitation for some polar orbit satellites.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the flexible sail deployment device, which can overcome the defects of the prior art, realizes that the large flexible sail surface is easy to fold and store in the launching stage, does not need an additional power source in the in-orbit deployment process, has a safe and reliable deployment mode, and does not cause potential safety hazards to the launching process and the in-orbit working process of a satellite provided with the flexible sail deployment device.
The invention provides a flexible sail deployment device which comprises a shell mechanism, a triggering mechanism, a mast deployment mechanism, a sail storage mechanism and a flexible sail; the flexible sail is folded and arranged in the sail storage mechanism, the fixed end is fixedly connected with the Chu Fan mechanism, the free end is fixedly connected with the unfolding mechanism, and the triggering mechanism is arranged at the opening of the sail storage mechanism and used for releasing the limitation of the sail storage mechanism on the flexible sail; the mast unfolding mechanism comprises a mast assembly and guide assemblies distributed along the circumference of the mast assembly; the mast assembly comprises a mast and a central winding drum, and comprises two back-to-back elastic masts which are wound on the outer circumference of the central winding drum and can be automatically unfolded to be in a linear shape in a free state; and a reset interface is reserved on the central winding drum.
According to the flexible sail unfolding device, when the satellite runs in orbit, the flexible sails are folded and hermetically contained in the sail storage mechanism, the flexible sails are not exposed in a space environment, and damage to the flexible sails is avoided. Because the mast assembly comprises two back-to-back elastic masts, when the trigger mechanism releases the limit of the sail storage mechanism to the flexible sail, the masts can rely on the elastic reset characteristic of the masts, and the free ends can be continuously extended from the flexible sail deployment device to the external space environment until the free ends are unfolded to be in a linear shape. Thereby driving the flexible sail fixedly connected with the mast to be unfolded in a space environment without a power source. The unfolding mode without a power source can effectively save the operation energy of the satellite, and the unfolding mode without a initiating explosive device cannot cause potential safety hazards to the satellite emission and on-orbit operation. The center winding drum is provided with a reset interface, so that the mast can be reset and stored in the mast unfolding mechanism again. When the flexible sail deployment device is assembled on the ground, the mast can be deployed and assembled in trial, and after the trial assembly is completed, the flexible sail deployment device can be reset again.
According to one aspect of the invention, the mast deployment mechanism and the sail storage mechanism are independent of each other, the sail storage mechanism is fixedly arranged in a housing mechanism, and the central reel is rotatably arranged in the housing mechanism.
The flexible sail deployment device provided by the invention adopts a modularized design, and the mast deployment mechanism and the sail storage mechanism are mutually independent, so that the combined use and the separate maintenance of different modules can be realized.
According to one aspect of the invention, the housing mechanism includes a box, a mast cover, a sail cover, and a circuit board boot; the box body is provided with a bottom plate and a side wall perpendicular to the bottom plate, and the fixed end of the lower part of the side wall and the edge end part of the bottom plate are integrally formed; and one ends of the mast cover plate and the sail cover plate are vertically and fixedly connected with the free end of the side wall, and the end face of the other end is mutually matched and covered on the upper part of the side wall.
According to one aspect of the invention, the sail storage mechanism comprises a sail box upper cover, a sail box, a column cover, a rope column, an axial gasket, a guide bearing, an adjusting backing ring, a mast rotating shaft, a limit nail, a sail box side cover and a sail box side cover rotating shaft;
the column cover and the rope column are fixed at one end, far away from the side cover of the sail box, in the sail box and used for fixing the fixed end of the flexible sail; the sail box is fixedly connected with the upper cover of the sail box through a limit nail arranged on the upper cover of the sail box, the lower end of the side cover of the sail box is hinged on the sail box through a rotating shaft of the side cover of the sail box, and the upper side of the side cover of the sail box is fixedly connected with one end of a limit rope; the other end of the limiting rope is fixedly connected with the trigger mechanism; the inner parts of the sail box, the upper cover of the sail box and the side cover of the sail box are accommodating spaces of flexible sails; the free ends of the elastic masts are placed against the two side walls of the sail box, and the free ends of the elastic masts are limited by the sail box side covers; the two side walls of the sail box and the mast rotating shaft have the function of guiding the expansion of the mast.
The mast rotating shaft sequentially passes through the sail box, the guide bearing, the adjusting backing ring, the guide bearing and the axial gasket, and one end of the mast rotating shaft is fixed on the sail box through the clamp.
According to the flexible sail unfolding device, in the folded state, the flexible sails are folded and fixed by the sail storage mechanism. In the collapsed state, the free end of the mast is not accommodated in the mast deployment mechanism, but rather extends into the sail storage mechanism and is accommodated against both sides of the triangular sail box. At this time, the side cover of the sail box, which is disposed at the bottom side of the triangular sail box, is in a closed state, and is blocked in front of the extending direction of the mast, and the free end of the mast is subjected to limit control. The top angle position of the sail box is provided with a mast rotating shaft, a guide bearing is sleeved on the mast rotating shaft, and the free end of the mast is respectively arranged on two sides of the mast rotating shaft. During the development of the mast, the guide bearing is in rotary contact with the surface of the mast, and the friction force is small. The guide bearing and the two side surfaces of the sail box play a guide role on the mast in the unfolding process of the mast.
According to one aspect of the invention, the mast assembly further comprises a reel presser plate, a reel upper cover, a reel lower cover and two rolling bearings, wherein a mounting plane for fixing the mast is arranged on the outer circle surface of the central reel, and extends from the upper end surface to the lower end surface of the central reel and is perpendicular to the end surfaces;
the winding drum pressing sheet comprises a body, a pressing plane and a cylindrical surface, wherein the cylindrical surface and the outer circumferential surface of the central winding drum have the same radius, and when one end of the elastic mast is clamped and fixed between the mounting plane and the pressing plane by the winding drum pressing sheet, the cylindrical surface and the outer circumferential surface of the central winding drum can form a complete cylindrical surface for winding and storing the elastic mast; the upper cover and the lower cover of the winding drum are respectively and fixedly connected with the upper end face and the lower end face of the central winding drum, and the movement of the elastic mast is limited in the axial direction in the process of expanding the elastic mast; the rolling bearings are fixedly arranged at the shaft parts at the two ends of the central winding drum.
In the process of expanding the mast, the central winding drum continuously rotates along with the extension of the mast, and the rotation resistance of the central winding drum is small due to the arrangement of the rolling bearing, so that the smooth extension of the mast can be ensured. Because the cylindrical surface and the outer circumferential surface of the central winding drum can form a complete cylindrical surface, when one end of the elastic mast is clamped and fixed between the installation plane and the press-fit plane by the winding drum pressing sheet, the mast can be ensured to be wound in a continuous circular shape in the process of winding the mast on the central winding drum, and the smoothness of the surface of the mast is ensured, so that the elasticity of the mast is not influenced by crease.
According to one aspect of the invention, the guide assembly comprises a first guide bracket, a second guide bracket, a guide pin shaft and a guide rotating sleeve; the guide rotating sleeve is a hollow cylinder and is rotatably sleeved on the guide pin shaft; the guide pin shaft is fixedly arranged on a first guide bracket and a second guide bracket which are cylindrical, and the middle position of the guide pin shaft is provided with a through square hole, and the height of the square hole is larger than the length of the guide rotating sleeve; the first guide support and the second guide support are fixedly arranged on a bottom plate of the shell mechanism, circumferentially arranged on the periphery of the mast assembly, and the opening position between the first guide support and the second guide support corresponds to the mast rotating shaft of the sail storage mechanism; in the stowed state of the flexible sail, the free ends of the flexible masts are in close proximity to the outer circumferential surfaces of the guide bushings and the mast shafts, and the ends of the flexible masts are in close contact with the inner walls of the Chu Fan side covers.
The guide assemblies are circumferentially distributed along the elastic mast assembly, limit and guide the outer ring of the elastic mast assembly, and ensure that the elastic mast is normally curled and smoothly exhibited.
According to one aspect of the invention, the triggering mechanism comprises a fusing element for converting electric energy into heat energy, and the triggering mechanism is fixedly arranged on the sail panel; the fusing element is in close contact with the spacing rope.
The flexible sail unfolding device provided by the invention uses a non-initiating means to open the sail storage cover, so that the limitation on the flexible sail is safely and effectively removed. In the use, after the fusing element melts the spacing rope through the heat energy that the electric energy converted, the upper portion of sail box side cap no longer is controlled by spacing rope, and sail box side cap outwards rotates into the open state downwards with sail box side cap pivot as the center of rotation, has released the spacing of sail box side cap to the mast promptly, and the mast can take and expand together with flexible sail.
According to one aspect of the invention, the sail deployment device further comprises an electronic control mechanism, wherein the electronic control mechanism comprises a mast deployment feedback assembly arranged on the bottom plate and a Chu Fan uncap feedback assembly arranged on the sail cover plate; the fixed end surface of the elastic mast is provided with an insulating material, and the sail storage mechanism comprises a conductive sheet.
In the flexible sail deployment device provided by the invention, whether the mast is fully deployed and whether the sail storage cover is smoothly opened can be detected through the electric control mechanism.
According to one aspect of the invention, the mast deployment feedback assembly comprises a sail contact mount, a sail contact back cover, a sail contact mount, a sail mounting bracket, and a sail compression spring;
the sail contact seat is arranged on the sail contact seat in an interference fit manner, the sail contact is arranged in the sail contact seat in a clearance fit manner, the sail contact can slide in the sail contact seat, and the sail contact always keeps an extending state under the action of a sail compression spring and keeps close contact with the elastic mast; the sail contact back cover is fixedly connected to the outer side of the sail contact seat in a pressing mode, and the end portion of the sail contact back cover can be electrically connected with a wire; the sail contact seat is fixedly arranged on the sail mounting bracket and is fixed on the box body through the sail mounting bracket.
In the flexible sail deployment device provided by the invention, the contact is always in close contact with the mast through the specific structure of the mast deployment feedback assembly. When the mast is fully extended, the fixed end is changed from the innermost part of the mast roll originally accommodated in the roll to the outermost part, so that the sail contact can be contacted with the fixed end, and as the surface of the fixed end of the elastic mast is provided with an insulating material, the circuit of the mast unwinding feedback assembly is disconnected, and the mast is completely unwound.
According to one aspect of the invention, the Chu Fan open-cover feedback assembly comprises a cover contact holder, a cover contact, an open-cover contact rear cover, a cover contact holder, a cover compression spring;
the Chu Fan uncovering feedback assembly is fixedly arranged on the sail cover plate; when the sail box side covers are in a closed state, the cover contacts are in close contact with the conductive sheets of the sail storage mechanism.
When the side cover of the sail box is in an open state, the cover contact is no longer in contact with the conductive sheet of the sail storage mechanism. Chu Fan open circuit of the cover feedback assembly is open showing the sail magazine side cover in an open condition.
Compared with the prior art, the invention has the following remarkable beneficial effects: the flexible sail unfolding device provided by the invention realizes the unpowered source driven unfolding of the flexible sail by arranging the elastic masts, wherein the masts are two back-to-back arc-shaped elastic masts, are wound on the central winding drum and have elastic force expanding outwards, and the elastic masts are limited to unfold towards a specific direction by the guide component. The guide assembly is internally provided with the guide rotating sleeve, and the layout and the form of the guide assembly are optimized, so that the elastic mast is ensured to have smaller friction resistance moment in the unfolding process, and the reliable unfolding of the mechanism is realized.
The flexible sail deployment device provided by the invention adopts a modularized design, and the whole device can be used independently or can be used in combination according to the needs. The flexible sail is unfolded to form a triangle, and can be unfolded in a quadrilateral mode through combination. The mast unfolding mechanism and the sail storage mechanism are mutually independent, and can be conveniently replaced and reset.
In the flexible sail deployment device provided by the invention, the mast deployment feedback assembly and the Chu Fan uncapping feedback assembly adopting the contact points are arranged, so that the position detection of main movable parts of the device is realized.
The triggering mechanism of the device adopts fusing triggering, and the repeated use of the triggering mechanism is realized by replacing the limiting rope after the flexible sail is unfolded. Meanwhile, for example, a reset interface is reserved on a central winding drum of the mast unfolding mechanism, and the sail storage mechanism can be independently detached, so that the reusable and testability functions of the whole device are realized.
Drawings
FIG. 1 is a schematic view of the structure of a flexible sail deployment device according to one embodiment of the invention;
FIG. 2 is an exploded view of a flexible sail deployment device according to one embodiment of the invention;
FIG. 3 is an assembled view in partial cutaway of a flexible sail deployment device of one embodiment of the invention;
FIG. 4 is a perspective view of a mast assembly in a collapsed position according to one embodiment of the invention;
FIG. 5 is a schematic perspective view of a guide assembly according to an embodiment of the present invention;
FIG. 6 is a schematic view of a sail storage mechanism according to one embodiment of the invention;
FIG. 7 is a schematic diagram of a Chu Fan open cover feedback assembly in accordance with one embodiment of the invention;
FIG. 8 is a schematic structural view of a mast deployment feedback assembly in one embodiment of the invention;
FIG. 9 is a schematic view of a deployed state of a flexible sail deployment device in one embodiment of the invention.
Figure number: 10-a housing mechanism; 101-a box body; 102-mast cover plate; 103-sail cover plate; 104-a circuit board protective cover; 20-a trigger mechanism; 201-a fuse element; 30-mast deployment mechanism; 301-mast assembly; 30101-mast; 30102-a central spool; 30103-tabletting the roll; 30104-reel top cover; 30105-a reel lower cover; 30106-rolling bearing; 302-a guide assembly; 30201-a first guide bracket; 30202—a second guide bracket; 30203 a guide pin; 30204-guiding the rotating sleeve; 40-Chu Fan mechanism; 401-sail box upper cover; 402-sail boxes; 403-column cap; 404-rope column; 405-axial shims; 406-guiding bearings; 407-adjusting the backing ring; 408-mast shaft; 409-limit pins; 410-sail box side covers; 411-sail box side cover shaft; 412-conductive sheets; 50-an electric control mechanism; 501-a mast deployment feedback assembly; 50101—a sail contact mount; 50102—sail contacts; 50103-sail contact back cover; 50104-sail contact mount; 50105—sail mounting brackets; 50106—a sail compression spring; 502-Chu Fan uncap feedback assembly; 50201-cover contact mount; 50202-cover contacts; 50203-cover contact back cover; 50204-cap contact mount; 50205-cap compression springs; a 60-flexible sail;
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments will be briefly described below. It is apparent that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
The terms "upper", "lower", "left" and "right" used in the present invention are merely descriptive terms, and are not to be construed as limiting the present invention.
As shown in fig. 1, 2 and 3, the flexible sail deployment device of one embodiment of the present invention includes a housing mechanism 10, a trigger mechanism 20, a mast deployment mechanism 30, a sail storage mechanism 40 and a flexible sail 60; the flexible sail 60 is folded and arranged in the sail storing mechanism 40, the fixed end is fixedly connected with the Chu Fan mechanism 40, the free end is fixedly connected with the unfolding mechanism, the triggering mechanism 20 is arranged at the opening of the sail storing mechanism 40, and the triggering mechanism is used for releasing the limitation of the sail storing mechanism 40 on the flexible sail 60; the mast deployment mechanism 30 includes a mast assembly 301 and guide assemblies 302 circumferentially distributed along the mast assembly 301; the mast assembly 301 comprises a mast 30101 and a central drum 30102, wherein the mast assembly 301 comprises two back-to-back elastic masts 30101 which are wound at the outer circumference of the central drum 30102 and can be automatically unfolded to be in a linear shape in a free state; the central spool 30102 is left with a reset interface.
The flexible sail deployment device of this embodiment, when the satellite is in orbit, folds and hermetically accommodates the flexible sail 60 in the sail storage mechanism 40, and the flexible sail 60 is not exposed to the space environment, avoiding damage to the flexible sail 60. Because the mast assembly 301 includes two back-to-back resilient masts 30101, when the trigger mechanism 20 releases the limit of the sail storage mechanism 40 to the flexible sail 60, the masts 30101 can rely on their resilient return characteristics and the free ends can extend from the flexible sail deployment device continuously to the outside space environment until deployed in a straight line. Thereby driving the flexible sail 60 fixedly attached to the mast 30101 to deploy in a spatially unpowered manner. The unfolding mode without a power source can effectively save the operation energy of the satellite, and the unfolding mode without a initiating explosive device cannot cause potential safety hazards to the satellite emission and on-orbit operation. The central spool 30102 is left with a reset interface to reset the mast 30101 and to re-store it in the mast unwinding mechanism 30. When the flexible sail deployment device is assembled on the ground, the mast 30101 can be deployed and assembled, and after the assembly is completed, the flexible sail deployment device can be reset again.
In this embodiment, the mast deployment mechanism 30 and the sail storage mechanism 40 are independent of each other, the sail storage mechanism 40 being fixedly disposed in the housing mechanism 10, and the central spool 30102 being rotatably disposed in the housing mechanism 10.
The flexible sail deployment device of the embodiment adopts a modularized design, and the mast deployment mechanism 30 and the sail storage mechanism 40 are independent from each other, so that the combined use and the separate maintenance of different modules can be realized.
As shown in fig. 2, in this embodiment, the housing mechanism 10 includes a box 101, a mast cover 102, a sail cover 103, and a circuit board boot 104; the box body 101 is provided with a bottom plate and a side wall perpendicular to the bottom plate, and the fixed end of the lower part of the side wall and the edge end part of the bottom plate are integrally formed; one end of the mast cover plate 102 and one end of the sail cover plate 103 are vertically and fixedly connected with the free end of the side wall, and the end face of the other end is mutually matched and covered on the upper part of the side wall.
As shown in fig. 6, in this embodiment, the sail storage mechanism 40 includes a sail cartridge upper cover 401, a sail cartridge 402, a column cover 403, a rope column 404, an axial spacer 405, a guide bearing 406, an adjustment collar 407, a mast shaft 408, a limit pin 409, a sail cartridge side cover 410, and a sail cartridge side cover shaft 411;
the column cover 403 and the rope column 404 are fixed at one end of the sail box 402 away from the sail box side cover 410, and are used for fixing the fixed end of the flexible sail 60; the sail box 402 is fixedly connected with the sail box upper cover 401 through a limit nail 409 arranged on the sail box upper cover 401, the lower end of the sail box side cover 410 is hinged on the sail box 402 through a sail box side cover rotating shaft 411, and the upper side is fixedly connected with one end of a limit rope; the other end of the limiting rope is fixedly connected to the trigger mechanism 20; the accommodation space of the inner flexible sail 60 of the sail cartridge 402, the sail cartridge upper cover 401 and the sail cartridge side cover 410; the free ends of the flexible masts 30101 are placed against the two side walls of the sail magazine 402 while the free ends of the flexible masts 30101 are restrained by the sail magazine side covers 410; the two side walls of the sail magazine 402 and the mast shaft 408 guide the mast 30101 during the deployment of the mast 30101.
The mast rotation shaft 408 sequentially passes through the sail box 402, the guide bearing 406, the adjusting backing ring 407, the guide bearing 406 and the axial gasket 405, and one end of the mast rotation shaft is fixed on the sail box 402 through a clamp.
The flexible sail deployment device of this embodiment achieves deployment of the flexible sail 60 by the sail storage mechanism 40 in the stowed condition, securing the sail. In the collapsed state, the free end of the mast 30101 is not received in the mast deployment mechanism 30, but rather extends into the sail storage mechanism 40, being received against both sides of the triangular sail magazine 402. At this time, the sail cloth side cover 410 provided at the bottom position of the triangular sail cloth 402 is in a closed state, and is blocked forward of the extending direction of the mast 30101, and performs limit control on the free end of the mast 30101. The top angle position of the sail box 402 is provided with a mast rotating shaft 408, a guide bearing 406 is sleeved on the mast rotating shaft 408, and the free end of the mast 30101 is respectively arranged at two sides of the mast rotating shaft 408. During the development of the mast 30101, the guide bearings 406 are in rotational contact with the surface of the mast 30101 with less friction. The guide bearings 406 and the sides of the sail magazine 402 guide the mast 30101 during deployment of the mast 30101.
As shown in fig. 4, in this embodiment, the mast assembly 301 further comprises a roll pressing sheet 30103, a roll upper cover 30104, a roll lower cover 30105, and two rolling bearings 30106, wherein a mounting plane for fixing the mast 30101 is provided on the outer circumferential surface of the central roll 30102, and extends from the upper end face to the lower end face of the central roll 30102 and is perpendicular to the end faces;
the roll pressing sheet 30103 comprises a body, a press-fit plane and a cylindrical surface, wherein the cylindrical surface has the same radius as the outer circumferential surface of the central roll 30102, and when the roll pressing sheet 30103 clamps and fixes one end of the elastic mast 30101 between the installation plane and the press-fit plane, the cylindrical surface and the outer circumferential surface of the central roll 30102 can form a complete cylindrical surface for winding the elastic mast 30101; the upper spool cover 30104 and the lower spool cover 30105 are fixedly connected with the upper end surface and the lower end surface of the central spool 30102 respectively, and limit the movement of the elastic mast 30101 in the axial direction in the process of expanding the elastic mast 30101; rolling bearings 30106 are fixedly mounted to the shaft portions at both ends of the central spool 30102.
In the process of unfolding the mast 30101, the central winding drum 30102 continuously rotates along with the extension of the mast 30101, and the rotation resistance of the central winding drum 30102 is small due to the arrangement of the rolling bearings 30106, so that the smooth extension of the mast 30101 can be ensured. Because the cylindrical surface and the outer circumferential surface of the central winding drum 30102 can form a complete cylindrical surface, when the winding drum pressing piece 30103 clamps and fixes one end of the elastic mast 30101 between the installation plane and the press mounting plane, the mast 30101 can be ensured to be wound in a continuous circular shape in the process of winding the mast 30101 on the central winding drum 30102, and the smoothness of the surface of the mast 30101 can be ensured without crease affecting the elasticity of the mast 30101.
As shown in fig. 5, in this embodiment, the guide assembly 302 includes a first guide bracket 30201, a second guide bracket 30202, a guide pin 30203, and a guide sleeve 30204; the guide rotating sleeve 30204 is a hollow cylinder and is rotatably sleeved on the guide pin shaft 30203; the guide pin shaft 30203 is fixedly arranged on a first guide bracket 30201 and a second guide bracket 30202 which are cylindrical and provided with a square hole at the middle position, and the height of the square hole is larger than the length of the guide rotating sleeve 30204; the first guide bracket 30201 and the second guide bracket 30202 are fixedly arranged on the bottom plate of the shell mechanism 10, circumferentially arranged on the periphery of the mast assembly 301, and the opening position between the first guide bracket 30201 and the second guide bracket 30202 corresponds to the mast rotating shaft 408 of the sail storage mechanism 40; in the housed state of the flexible sail 60, the free ends of the elastic masts 30101 are abutted against the outer circumferential surfaces of the guide sleeve 30204 and the mast rotary shaft 408, and the tips of the elastic masts 30101 are in close contact with the inner wall of the Chu Fan side cover.
The guiding components 302 are circumferentially distributed along the elastic mast component 301, limit and guide the outer ring of the elastic mast component 301, and ensure that the elastic mast 30101 is normally curled and smoothly developed.
As shown in fig. 2, in this embodiment, the triggering mechanism 20 includes a fuse element 201 that converts electric energy into thermal energy, and the triggering mechanism 20 is fixedly provided on the sail panel 103; the fusing element 201 is closely contacted with the stopper rope.
The flexible sail deployment device of this embodiment uses a non-pyrotechnic approach to open the sail storage cover, safely and effectively releasing the restraint on the flexible sail 60. In the use process, after the fusing element 201 fuses the limiting rope through the heat energy converted from the electric energy, the upper part of the side cover 410 of the sail box is not controlled by the limiting rope, the side cover 410 of the sail box rotates outwards and downwards to be in an open state by taking the rotating shaft 411 of the side cover of the sail box as a rotating center shaft, namely, the limit of the side cover 410 of the sail box on the mast 30101 is released, and the mast 30101 can be unfolded together with the flexible sail 60.
In this embodiment, the system also comprises an electronic control mechanism 50, wherein the electronic control mechanism 50 comprises a mast unfolding feedback assembly 501 arranged on the bottom plate and a Chu Fan uncovering feedback assembly 502 arranged on the sail cover 103; the fixed end surface of the flexible mast 30101 is provided with an insulating material and the sail storage mechanism 40 includes a conductive tab 412.
In the flexible sail deployment device of this embodiment, it is possible to detect whether the mast 30101 is fully deployed and the sail storage cover is successfully opened by the electronic control mechanism 50.
As shown in fig. 8, in this embodiment, the mast deployment feedback assembly 501 includes a sail contact mount 50101, a sail contact 50102, a sail contact aft cover 50103, a sail contact mount 50104, a sail mounting bracket 50105, and a sail compression spring 50106;
the sail contact block 50104 is mounted on the sail contact block 50101 in an interference fit, the sail contact block 50102 is mounted in the sail contact block 50104 in a clearance fit, the sail contact block 50102 can slide in the sail contact block 50104, and the sail contact block 50102 always keeps an extended state under the action of the sail compression spring 50106 and keeps close contact with the elastic mast 30101; the sail contact rear cover 50103 is fixedly connected to the outer side of the sail contact base 50104 in a pressing mode, and the end portion of the sail contact rear cover 50103 can be electrically connected with a wire; the sail contact housing 50101 is fixedly mounted on the sail mounting bracket 50105, and is secured to the housing 101 by the sail mounting bracket 50105.
In the flexible sail deployment device of this embodiment, the contact is always in intimate contact with the mast 30101 by the specific configuration of the mast deployment feedback assembly 501. When the mast 30101 is fully extended, the fixed end changes from the innermost to the outermost portion of the original roll of mast 30101 received, enabling the sail contacts 50102 to contact the fixed end, as the fixed end surface of the flexible mast 30101 is provided with insulating material, the circuit of the mast unwind feedback assembly 501 is broken, indicating that the mast 30101 is fully unwound.
As shown in fig. 7, in this embodiment, the Chu Fan open-cover feedback assembly 502 includes a cover contact receptacle 50201, a cover contact 50202, a cover contact rear cover 50203, a cover contact receptacle 50204, a cover compression spring;
chu Fan the tamper feedback assembly 502 is fixedly mounted to the sail panel 103; when the sail magazine side cover 410 is in the closed state, the cover contacts 50202 are in close contact with the conductive tabs 412 of the sail storage mechanism 40.
When the sail magazine side cover 410 is in the open state, the cover contacts 50202 are no longer in contact with the conductive tabs 412 of the sail storage mechanism 40. Chu Fan open circuit to the cover feedback assembly 502 is open showing the sail cloth side cover 410 in an open condition.
As shown in fig. 9, the flexible sail 60 provided in this embodiment is an off-track sail for use when satellites are off-track. Meanwhile, the flexible sail deployment device of the embodiment can also be used for folding and unfolding of space attack and defense covers and flexible antennas. The off-orbit sail technology mainly increases satellite resistance by expanding a large-area sail surface in orbit, thereby accelerating the off-orbit of satellites. The flexible sail deployment device can be deployed by means of mechanical energy stored by the device, and the whole device is light in weight, simple in structure, low in cost and suitable for microsatellites with quick response and short task cycle. The deployment device of the embodiment can realize the deployment of the space flexible sail 60, provide resistance for the off-orbit of the micro-nano satellite, accelerate the off-orbit of the satellite, and realize the serialization and standardization of the device by adopting a modularized design thought.
When the flexible sail deployment device is in a storage state of the flexible sail 60, the elastic mast 30101 is wound on the central winding drum 30102 to be in a furled state, the guide assembly 302 is arranged around the central winding drum 30102, the elastic mast 30101 is limited to be deployed under the action of elastic force, the flexible sail 60 is stored in the sail storage mechanism 40 after being folded, the flexible sail 60 is triangular, and three corners are respectively connected with the rope column 404 and the two elastic masts 30101 through flexible ropes. The sail contact 50102 of the mast deployment feedback assembly 501 is attached to the free end of the flexible mast 30101 by the sail compression springs 50106 with the signal in the on state. The two free ends of the elastic mast 30101 are extruded on the inner wall of the sail box 402 under the action of self elastic force, the lower end of the sail box side cover 410 is connected with the bottom plate through the sail box side cover rotating shaft 411, the upper end is locked through the trigger component, at the moment, the sail box side cover 410 limits the expansion of the elastic mast 30101, and simultaneously limits the flexible sail 60 in the sail storage mechanism 40, so that the flexible sail 60 is prevented from being expanded. The cap contact 50202 of the Chu Fan cap feed back assembly 502 contacts the conductive tab 412 and signals to a conductive state.
In the process of unfolding the flexible sail 60, the trigger mechanism 20 is electrified after receiving a command signal, the electric energy of the fusing element 201 is converted into heat energy to fuse the limiting ropes, after limiting of the sail box side cover 410 is released, the sail box side cover is rotated and opened around the sail box side cover rotating shaft 411 under the thrust action of the elastic mast 30101, the cover contact 50202 of the Chu Fan cover opening feedback assembly 502 is separated from the conducting piece 412, the feedback sail box side cover 410 opens the signal, the sail box side cover 410 releases the limiting of the elastic mast 30101 and the flexible sail 60, the elastic mast 30101 is unfolded along the inner walls of the two side edges of the sail box 402 under the limit of the guide assembly 302, the guide assembly 302 provides rolling friction in the unfolding process of the elastic mast 30101, and the friction resistance received in the unfolding process of the mast 30101 is reduced. When the elastic mast 30101 is unfolded, the two free ends drive the flexible sail 60 to be unfolded through the flexible ropes, after the flexible sails are unfolded in place, the sail contacts 50102 of the mast unfolding feedback assembly 501 are in contact with the insulating material of the fixed end of the elastic mast 30101, the elastic mast 30101 is unfolded in place, and at the moment, the elastic mast 30101 provides rigid support for the flexible sail 60, so that the flexible sail 60 is kept in an unfolded state.
The flexible sail deployment device of this embodiment may also be reset after the deployment test is completed during the test phase. Specifically, the flexible sail 60 is disassembled and folded, and is put into the sail storage mechanism 40 again, the fixed end is connected and fixed with the rope column 404, the elastic mast 30101 is wound on the central drum 30102 under the restriction of the guide assembly 302 by rotating the central drum 30102 through the reset interface of the central drum 30102, and after the elastic mast 30101 is folded in place, two ends of the free end of the flexible sail 60 are respectively connected with the free ends of the two elastic masts 30101 again. The reset triggering mechanism 20 and the limiting rope limit the side cover 410 of the sail box again, so that the whole device is reset to a furled state.
The foregoing is merely exemplary of embodiments of the invention and, as regards devices and arrangements not explicitly described in this disclosure, it should be understood that this can be done by general purpose devices and methods known in the art.
The above is only a specific embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A flexible sail deployment device comprising a housing mechanism (10), a trigger mechanism (20), a mast deployment mechanism (30), a Chu Fan mechanism (40) and a flexible sail (60); the flexible sail (60) is folded and arranged in the sail storage mechanism (40), the fixed end is fixedly connected with the Chu Fan mechanism (40), and the free end is fixedly connected with the mast unfolding mechanism (30), and the flexible sail is characterized in that:
the triggering mechanism (20) is arranged at the opening of the Chu Fan mechanism (40) and is used for releasing the limitation of the Chu Fan mechanism (40) on the flexible sail (60);
the mast unfolding mechanism (30) comprises a mast assembly (301) and guide assemblies (302) circumferentially distributed along the mast assembly (301), wherein the mast assembly (301) comprises a mast (30101) and a central drum (30102), the mast assembly (301) comprises two back-to-back elastic masts (30101), and the masts (30101) are wound at the outer circumference of the central drum (30102) and can be automatically unfolded to be in a linear shape in a free state;
a reset interface is reserved on the central winding drum (30102);
the Chu Fan mechanism (40) comprises a sail box upper cover (401), a sail box (402), a column cover (403), a rope column (404), an axial gasket (405), a guide bearing (406), an adjusting backing ring (407), a mast rotating shaft (408), a limit nail (409), a sail box side cover (410) and a sail box side cover rotating shaft (411);
the column cover (403) and the rope column (404) are fixed at one end, far away from the side cover (410) of the sail box, in the sail box (402) and are used for fixing the fixed end of the flexible sail (60);
the sail box (402) is fixedly connected with the sail box upper cover (401) through a limit nail (409) arranged on the sail box upper cover (401), the lower end of the sail box side cover (410) is hinged on the sail box (402) through a sail box side cover rotating shaft (411), the upper end of the sail box is fixedly connected with one end of a limit rope, and the other end of the limit rope is fixedly connected with the trigger mechanism (20);
the inner parts of the sail box (402), the upper sail box cover (401) and the side sail box cover (410) are accommodating spaces for the flexible sails (60), wherein the free ends of the elastic masts (30101) are placed against the two side walls of the sail box (402), and the free ends of the elastic masts (30101) are limited by the side sail box cover (410);
the two side walls of the sail box (402) and the mast rotating shaft (408) have the function of guiding the expansion of the mast (30101);
the mast rotating shaft (408) sequentially passes through the sail box (402), the guide bearing (406), the adjusting backing ring (407), the guide bearing (406) and the axial gasket (405), and one end of the mast rotating shaft is fixed on the sail box (402) through a clamp;
the mast assembly (301) further comprises a reel pressing piece (30103), a reel upper cover (30104), a reel lower cover (30105) and two rolling bearings (30106), wherein a mounting plane for fixing the mast (30101) is arranged on the outer circle surface of the central reel (30102), extends from the upper end surface to the lower end surface of the central reel (30102) and is perpendicular to the end surfaces;
the roll pressing piece (30103) comprises a body, a press-fit plane and a cylindrical surface, wherein the cylindrical surface has the same radius as the outer circular surface of the central roll (30102), and when one end of the elastic mast (30101) is clamped and fixed between the mounting plane and the press-fit plane, the cylindrical surface and the outer circular surface of the central roll (30102) can form a complete cylindrical surface for winding and storing the elastic mast (30101);
the upper drum cover (30104) and the lower drum cover (30105) are respectively and fixedly connected with the upper end surface and the lower end surface of the central drum (30102), the movement of the elastic mast (30101) is limited in the axial direction in the process of expanding the elastic mast (30101), and the rolling bearings (30106) are fixedly arranged at the shaft parts at the two ends of the central drum (30102);
the guide assembly (302) comprises a first guide bracket (30201), a second guide bracket (30202), a guide pin shaft (30203) and a guide rotating sleeve (30204), wherein the guide rotating sleeve (30204) is a hollow cylinder and is rotatably sleeved on the guide pin shaft (30203);
the guide pin shaft (30203) is fixedly arranged on a first guide support (30201) and a second guide support (30202) which are cylindrical and provided with square holes at the middle positions, the height of each square hole is larger than the length of each guide rotating sleeve (30204), the first guide support (30201) and the second guide support (30202) are fixedly arranged on a bottom plate of the shell mechanism (10), the circumference of the mast assembly (301) is circumferentially and circumferentially arranged, and the opening positions between the first guide support (30201) and the second guide support (30202) correspond to a mast rotating shaft (408) of the Chu Fan mechanism (40);
in the stowed state of the flexible sail (60), the free end of the flexible mast (30101) is in close proximity to the outer circumferential surfaces of the guide sleeve (30204) and the mast shaft (408), and the free end of the flexible mast (30101) is in close contact with the inner wall of the sail magazine (402);
the electric control mechanism (50) comprises a mast unfolding feedback assembly (501) arranged on the bottom plate and a Chu Fan uncovering feedback assembly (502) arranged on the sail cover plate (103), an insulating material is arranged on the surface of the fixed end of the elastic mast (30101), and the Chu Fan mechanism (40) comprises a conducting plate (412);
the mast deployment feedback assembly (501) comprises a sail contact mount (50101), a sail contact (50102), a sail contact back cover (50103), a sail contact mount (50104), a sail mounting bracket (50105) and a sail compression spring (50106);
the sail contact seat (50104) is mounted on the sail contact seat (50101) in an interference fit manner, the sail contact (50102) is mounted in the sail contact seat (50104) in a clearance fit manner, the sail contact (50102) can slide in the sail contact seat (50104), and the sail contact seat always keeps an extending state under the action of the sail compression spring (50106) and keeps in close contact with the elastic mast (30101);
the sail contact rear cover (50103) is fixedly connected to the outer side of the sail contact seat (50104) in a pressing mode, and the end portion of the sail contact rear cover (50103) can be electrically connected with a wire;
the sail contact seat (50101) is fixedly arranged on the sail mounting bracket (50105), and is fixed on the box body (101) through the sail mounting bracket (50105).
2. The flexible sail deployment device of claim 1, wherein: the mast unfolding mechanism (30) and the Chu Fan mechanism (40) are independent, the Chu Fan mechanism (40) is fixedly arranged in the shell mechanism (10), and the central winding drum (30102) is rotatably arranged in the shell mechanism (10).
3. The flexible sail deployment device of claim 2, wherein: the shell mechanism (10) comprises a box body (101), a mast cover plate (102), a sail cover plate (103) and a circuit board protective cover (104);
the box body (101) is provided with a bottom plate and a side wall perpendicular to the bottom plate, and the fixed end of the side wall and the edge end part of the bottom plate are integrally formed;
one end of the mast cover plate (102) and one end of the sail cover plate (103) are vertically and fixedly connected with the free end of the side wall, and the other end face is mutually matched and covered on the free end of the side wall.
4. A flexible sail deployment device according to claim 3, wherein: the trigger mechanism (20) comprises a fusing element (201) for converting electric energy into heat energy, the trigger mechanism (20) is fixedly arranged on the sailboard (103), and the fusing element (201) is tightly contacted with the limiting rope.
5. The flexible sail deployment device of claim 1, wherein: the Chu Fan cover opening feedback assembly (502) comprises a cover contact seat (50201), a cover contact (50202), a cover contact rear cover (50203), a cover contact seat (50204) and a cover compression spring;
the Chu Fan cover opening feedback assembly (502) is fixedly arranged on the sail cover plate (103);
when the sail box side cover (410) is in a closed state, the cover contacts (50202) are in intimate contact with the conductive strips (412) of the Chu Fan mechanism (40).
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| CN202111441562.6A CN114132528B (en) | 2021-11-30 | 2021-11-30 | Flexible sail unfolding device |
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| CN202111441562.6A CN114132528B (en) | 2021-11-30 | 2021-11-30 | Flexible sail unfolding device |
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| CN115924134B (en) * | 2022-12-16 | 2024-03-15 | 苏州馥昶空间技术有限公司 | Off-orbit sailing device and satellite |
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