CN107628270B - Pod-shaped supporting rod throwing-off and unfolding mechanism - Google Patents
Pod-shaped supporting rod throwing-off and unfolding mechanism Download PDFInfo
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- CN107628270B CN107628270B CN201710641151.9A CN201710641151A CN107628270B CN 107628270 B CN107628270 B CN 107628270B CN 201710641151 A CN201710641151 A CN 201710641151A CN 107628270 B CN107628270 B CN 107628270B
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Abstract
A pod-shaped support rod throw-away deployment mechanism comprising: the device comprises a roller assembly, a frame, an expansion driving device, a guide device, a plurality of groups of throwing-off devices and a thrust device; the roller assembly, the unfolding driving device and the guiding device are sequentially arranged on the frame, the plurality of groups of throwing-off devices are sequentially connected with the guiding device in a sliding manner, and the thrust device is arranged on the frame; the roller assembly is wound with a bean clamp-shaped support rod, the pod-shaped support rod is driven by the expansion driving device to extend to the outer side of the frame, the thrust device pushes the throwing-off device to move to the outer side of the frame, when the throwing-off device is extruded by the guide device, the throwing-off device is abutted to the rod surface of the pod-shaped support rod, and when the preset specific position of the pod-shaped support rod moves to the lower side of the throwing-off device, the throwing-off device is locked on the pod-shaped support rod and moves to the outer side of the frame along with the pod-shaped support rod until the pod-shaped support rod breaks away. The pod-shaped supporting rods are connected with each other in a matched mode through the plurality of groups of throwing-off devices, and the pod-shaped supporting rods have multipoint connection capacity.
Description
Technical Field
The invention relates to the technical field of spacecraft deployment, in particular to a pod-shaped support rod throwing-off and deploying mechanism.
Background
The spacecraft unfolding technology is a key technology for realizing on-orbit reliable unfolding and shape keeping of a large-size space structure so as to have task execution capacity. With the development of large-scale, light-weight and high-precision space expandable structures, elastic expandable structures are increasingly applied to the expansion and support of aerospace structures, and are typically applied to flexible solar cell arrays, solar sails, space antennas, light shields and the like. The elastic expandable structure is an elastic energy storage type expandable structure, is folded and expanded by means of self large strain bending deformation and high-precision resilience, and has the advantages of light weight, good rigidity, small storage volume, high expansion precision and the like.
The pod rod is a kind of elastic support structure which is widely applied, and is named because the double omega closed section is similar to a pod. The structure has better bearing rigidity, if the section of the structure is flattened, the bending rigidity is greatly weakened, and the structure can be easily curled and wound on a roller to realize furling; after releasing again, the part which is separated from the constraint part can automatically rebound to the original section shape to realize unfolding.
In order to realize the stable and controllable unfolding of the bean pod rods, an unfolding mechanism is required to be equipped for controlling the folding and unfolding movement of the bean pod rods. Pod rod deployment mechanisms have been studied by domestic and foreign space agencies (such as NASA, DLR in germany, and JAXA in japan), and one type of known pod rod deployment mechanisms is a fixed deployment mechanism which is located at a connection part of a support rod and a star and drives pod rods to extend out; another type, like steel tape deployment, is a follow-up deployment mechanism that secures one end of a pod rod to the star, and releases the rod while moving outward.
The end parts of the fixed unfolding rods are concentrated and have small weight, so that the fixed unfolding rods are easy to control and are concerned, and the fixed unfolding rods are also a more developed pod rod unfolding mechanism. However, the fixed unfolding mechanism is connected with the root of the pod rod, and the position where the rod bears the maximum bending moment is the highest, so that the sufficient connection rigidity is difficult to ensure; if the auxiliary device is added to reinforce the root, the complexity and the mass of the mechanism can be increased, and the auxiliary device is difficult to be applied to occasions with higher requirements on structural rigidity and light weight. The servo-actuated unfolding mechanism transfers the connecting part of the pod rod and the mechanism to the far end of the rod which has low bearing requirements, so that the rigidity of the unfolded pod rod is improved, and the mechanism can be thrown away after the pod rod is unfolded, thereby further reducing the weight of the system. However, in the application of large-scale film deployable structures such as solar sails, in order to improve the overall rigidity of the film structure, a plurality of connecting interfaces need to be arranged along the axial direction of the pod rods to be connected with the film load. Because the locus of the curling motion of the pod rod is different from that of the folding and unfolding translation motion of the film, the problem of incongruity of motion exists in multipoint connection, and therefore the application of the multi-interface pod rod in the film unfolding structure is limited.
Disclosure of Invention
The application provides a deployment mechanism is thrown from to pod shape bracing piece includes: the device comprises a frame, a roller assembly, an expansion driving device, a guide device, a plurality of groups of throwing-off devices and a thrust device;
the roller assembly, the unfolding driving device and the guiding device are sequentially arranged on the frame, the plurality of throwing-off devices are sequentially connected to the guiding device in a sliding manner, and the thrust device is arranged on the frame;
the pod-shaped supporting rod is wound on the roller assembly, the pod-shaped supporting rod is driven by the expansion driving device to extend to the outer side of the frame, the pushing device pushes the throwing-off device to move to the outer side of the frame, when the throwing-off device is extruded by the guide device, the throwing-off device abuts against the rod face of the pod-shaped supporting rod, and when the preset specific position of the pod-shaped supporting rod moves to the lower side of the throwing-off device, the throwing-off device is locked on the pod-shaped supporting rod and moves to the outer side of the frame along with the pod-shaped supporting rod until the pod-shaped supporting rod breaks away from the.
In one embodiment, the roller assembly comprises a roller and a compression bar;
the pressing strip is fixedly arranged on the outer wall of the roller, and one end of the pod-shaped supporting rod is arranged below the pressing strip and is extruded on the roller by the pressing strip.
In one embodiment, a frame includes a first side panel, a second side panel, and a skin;
the front parts of the first side plate and the second side plate are of circular surface structures, and the rear parts of the first side plate and the second side plate are of straight line segment structures;
one end of the skin is connected with the circular surface edge of the first side plate, and the other end of the skin is connected with the circular surface edge of the second side plate;
the roller assembly is arranged on the round surfaces of the first side plate and the second side plate, and the unfolding driving device and the guiding device are sequentially arranged on the inner sides of the straight sections of the first side plate and the second side plate.
In one embodiment, the guide device comprises a guide shaft and a guide groove;
the number of the guide shafts is two, one end of each guide shaft is fixedly arranged on the inner sides of the straight line sections of the first side plate and the second side plate, and the other end of each guide shaft extends towards the tail ends of the first side plate and the second side plate;
the quantity of guide way is two, and one end fixed mounting is respectively on the base of guiding axle and parallel arrangement in the guiding axle top, and the other end extends to the direction of guiding axle.
In one embodiment, the throwing-off device is of a symmetrical structure and comprises an arc-shaped bracket, a throwing-off seat, a guide cone and a locking sliding table;
the throwing-off seat is Contraband-shaped, a vertical surface of the throwing-off seat is provided with a guide hole penetrating through the guide shaft, and the throwing-off seat is symmetrically arranged on two opposite inner side surfaces of the arc-shaped support through the vertical surface;
the guide cone is movably inserted into the upper end transverse face of the throwing-off seat, and the locking sliding table is movably arranged on the lower end transverse face of the throwing-off seat;
when the throwing seat penetrates through the guide shaft through the guide hole, the top of the guide cone is clamped into the guide groove.
In one embodiment, the tail end of the guide groove is inclined downwards and extends to form a horizontal plane, the locking sliding table is provided with a jack under the guide cone, and a preset specific hole is formed in a preset specific position;
in the process that the pod-shaped supporting rod is driven by the unfolding driving device to extend towards the outer sides of the first side plate and the second side plate, two side edges of the pod-shaped supporting rod are respectively arranged in the throwing-off seat and positioned above the locking sliding table; thrust device promotes to throw from the seat and follows the guiding axle removes, and the guide cone is followed throw from the seat and remove together, when the top of guide cone is moved to the horizontal plane by the guide way, the horizontal plane extrusion the guide cone, the relative seat downstream of throwing of guide cone causes the bottom top of guide cone on throwing away the face of pod shape bracing piece in the seat, when the jack on the specific hole of predetermineeing and the locking slip table on guide cone, the pod shape bracing piece is just right to the time from top to bottom, the guide cone inserts in proper order and predetermines specific hole and jack.
In one embodiment, a transverse groove is formed in the upper end transverse face of the throwing-away seat, and a limiting block is arranged at the tail end of the lower end transverse face of the throwing-away seat;
when throwing away seat and the beans pod shape bracing piece and break away from first curb plate and second curb plate simultaneously, locking slip table is horizontal slip together with the guide cone under the drive of the horizontal resilience of beans pod shape bracing piece, and is spacing in the stopper until locking slip table, the guide cone is blocked the end in transverse groove.
In one embodiment, the thrust device comprises a spring seat, a shaft sleeve, a sliding block and a constant force spring;
the first side plate and the second side plate are respectively provided with a sliding groove along the guiding direction of the guiding device, and the spring seats are respectively fixedly arranged on the outer side surfaces of the first side plate and the second side plate and are positioned at the tail ends of the sliding grooves;
the shaft sleeve is arranged on the fixed shaft of the spring seat and freely rotates relative to the spring seat;
the sliding block is arranged in the sliding groove, and the sliding block contacts with the throwing-off device towards the boss extending towards the inner side of the first side plate and the second side plate;
the straight end of the constant force spring is fixedly connected with the sliding block, and the self-winding part of the constant force spring is coaxially arranged with the shaft sleeve.
In one embodiment, the surface of the skin is provided with a slotted hole.
In one embodiment, the predetermined specific holes are bar-shaped holes.
According to the pod-shaped supporting rod throwing and unfolding mechanism of the embodiment, the pod-shaped supporting rods are connected with the preset specific positions of the pod-shaped supporting rods in a matched mode through the plurality of groups of throwing and unfolding devices, so that the pod-shaped supporting rods have multipoint connection capacity, the problems that the unfolding control of the multi-interface pod-shaped supporting rods is difficult to realize and the structural rigidity is low in application of a film extensible structure are solved, the pod-shaped supporting rod throwing and unfolding mechanism of the embodiment has the effects of small folding size and high unfolding reliability, and can be effectively applied to the fields of spacecraft effective load extending arms, film solar sails, film solar cell arrays, film antennas and the like.
Drawings
FIG. 1 is a schematic structural view of a pod-shaped support rod throwing and unfolding mechanism;
FIG. 2 is a schematic view of a roller assembly;
FIG. 3 is a schematic view of a frame structure;
FIG. 4 is a schematic view of a deployment driver;
FIG. 5 is a schematic view of a guide;
FIG. 6 is a schematic view of a throw-off apparatus;
FIG. 7 is a schematic view of a thrust unit;
FIG. 8 is a schematic view of a bean clip shaped support bar;
FIG. 9(a) is a state before the pod shaped support rods are separated from the deploying mechanism;
FIG. 9(b) is a view showing the pod support rod in the detached state of the throw-away deployment mechanism;
FIG. 9(c) is a view of the pod support rod after separation of the throw-away deployment mechanism;
figure 9(d is a view of the interlocked state of the pod support rods after being separated from the deployment mechanism.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description and accompanying drawings.
The pod-shaped support rod throwing and unfolding mechanism is structurally schematically shown in fig. 1, and comprises a roller assembly 1, a frame 2, an unfolding driving device 3, a guiding device 4, a plurality of groups of throwing devices 5 and a thrust device 6, wherein the roller assembly 1, the unfolding driving device 3 and the guiding device 4 are sequentially installed on the frame 2, the plurality of groups of throwing devices 5 are sequentially connected to the guiding device 4 in a sliding mode, and the thrust device 6 is installed on the frame 2.
Wherein, frame 2 is the bearing structure of whole mechanism, provide corresponding installation interface for each functional unit, drum subassembly 1 is used for connecting fixed pod shape bracing piece 7 terminal surface, rotate rolling pod shape bracing piece 7 under artifical or the motor drive of adorning outward, it flattens pod shape bracing piece 7 to expand drive arrangement 3 adopts the pinch roller of taking motor drive, and rotatory drive pod shape bracing piece 7 outwards stretches out, guider 4 and thrust unit 6 provide the motion direction and the drive power of unblock separation for throwing away device 5 respectively, make throw away device 5 and pod shape bracing piece 7 predetermine specific position and be connected and lock on pod shape bracing piece 7, throw away device 5 and pod shape bracing piece 7 and separate with frame 2 simultaneously, throw away device 5 can provide the interface of being connected with pod shape bracing piece 7 for film structure or other loads.
Specifically, the roller assembly 1 is wound with a bean clamp-shaped support rod 7, the unfolding driving device 3 drives the bean clamp-shaped support rod 7 to extend towards the outer side of the frame 2, the pushing device 6 pushes the throw-off device 5 to move towards the outer side of the frame 2, when the throw-off device 5 is pressed by the guiding device 4, the throw-off device 5 abuts against the rod surface of the bean clamp-shaped support rod 7, and when the preset specific position of the bean clamp-shaped support rod 7 moves to the position below the throw-off device 5, the throw-off device 5 is locked on the bean clamp-shaped support rod 7 and moves towards the outer side of the frame 2 along with the bean clamp-shaped support rod until the bean clamp-shaped support rod is.
As shown in fig. 2, the roller assembly 1 comprises a roller 11 and a pressing strip 12, wherein, both end faces of the cylinder of the roller 11 are provided with raised flanging annular wall structures 13 which can prevent the pod-shaped supporting rods 7 wound on the roller 11 from axially dislocating, and in addition, in order to reduce the weight of the roller assembly 1, the roller 11 and the end faces are provided with weight reduction grooves 14.
In the preferred embodiment, a shaft hole with a key slot is formed in a rotating shaft boss on the end face of the roller 11, a manually operated rotating shaft tool or a motor driving device is selected to be matched and connected with the key slot shaft hole, so that the roller is driven to roll up the pod-shaped supporting rod 7, and the rotating shaft tool or the motor driving device is removed after the rolling is finished; the gasket made of silica gel or rubber is preferably selected on the bearing matching end surfaces of the roller 11 and the frame 1 to increase the rotation resistance of the roller 11 and ensure that the roller 11 rotates slowly to release the pod-shaped support rod 7 in the unfolding process.
Further, the pressing strip 12 is fixedly installed on the outer wall of the roller 11 and used for flattening and fixing the end part of the pod-shaped supporting rod 7 on the roller 11, after the pod-shaped supporting rod 7 is completely unfolded, the pod-shaped supporting rod 7 can be pulled away from the lower part of the pressing strip 12 under the driving of the unfolding driving device 3, and therefore the pod-shaped supporting rod 7 is separated from the roller assembly 1.
As shown in fig. 3, the frame 2 includes a first side plate 21, a second side plate 22, and a skin 23; the front parts of the first side plate 21 and the second side plate 22 are of circular surface structures, and the rear parts of the first side plate and the second side plate are of straight line segment structures; one end of the skin 23 is connected with the circular edge of the first side plate 21, and the other end is connected with the circular edge of the second side plate 22; the bearing seats are arranged at the centers of the circular surfaces of the first side plate 21 and the second side plate 22, the roller assembly 1 is respectively connected with the circular surface bearings of the first side plate 21 and the second side plate 22 through the bearing seats, and the unfolding driving device 3 and the guiding device 4 are sequentially arranged on the inner sides of the straight sections of the first side plate 21 and the second side plate 22.
In the preferred embodiment, the skin 23 is a thin-walled structure, is made of metal such as aluminum and stainless steel or non-metallic materials such as polyester and polytetrafluoroethylene, and has a slotted surface structure or a ribbed net structure on the surface, so that the weight can be reduced and the operation condition inside the roller assembly 1 can be observed conveniently.
As shown in fig. 4, the deployment driving device 3 includes a mounting bracket 301, a first pinch roller 302, a second pinch roller 303, a first transmission shaft 304, a second transmission shaft 305, a third transmission shaft 306, a fourth transmission shaft 307, a first transmission gear 308, a second transmission gear 309, a driving motor mounting seat 310, a driving worm wheel 311, a driving worm 312, and a driving motor 313, wherein: two ends of the first pinch roller 302 are coaxially mounted with the first transmission shaft 304 and the second transmission shaft 305 respectively and are connected by a one-way bearing; two ends of the second pinch roller 303 are coaxially arranged with the third transmission shaft 306 and the fourth transmission shaft 307 respectively and are connected by a one-way bearing; the first transmission shaft 304, the second transmission shaft 305, the third transmission shaft 306 and the fourth transmission shaft 307 are respectively connected with the mounting bracket 301 through bearings, and the first pinch roller 302 and the second pinch roller 303 are fixed on the mounting bracket 301; the first transmission gear 308 and the second transmission gear 309 are respectively fixed at the positions, close to the inner side face of the mounting bracket 301, of the second transmission shaft 305 and the third transmission shaft 306, and are connected through keys and meshed with each other; a driving worm wheel 311 is arranged on the position, close to the inner side surface of the mounting bracket 301, of the fourth transmission shaft 307 and is connected with the mounting bracket through a key; the driving worm wheel 311 is meshed with the driving worm 312; the driving worm 312 is fixed in the driving motor mounting seat 310 and is connected by a bearing; the driving motor mounting seat 310 is fastened at the inner side of the mounting bracket 301 by screws, and a driving motor 313 is mounted at the outer part of the driving motor mounting seat; the driving motor 313 and the driving worm 312 are coaxially matched and mounted to realize transmission.
In a preferred embodiment, silica gel or rubber materials are attached to the outer surfaces of the first pressing wheel 302 and the second pressing wheel 303, so that high friction force between the contact surfaces of the first pressing wheel 302 and the second pressing wheel 303 and the contact surfaces of the pod-shaped supporting rods 7 is ensured; the matching parts of the first pressing wheel 302, the second pressing wheel 303, the first transmission shaft 304, the second transmission shaft 305, the third transmission shaft 306 and the fourth transmission shaft 307 adopt one-way bearings, so that the unfolding driving force can be transmitted in one way only in the extending direction of the corresponding pod-shaped support rod, and the first pressing wheel 302 and the second pressing wheel 303 can rotate along with the rotation in the furling direction of the pod-shaped support rod 7 without generating furling resistance.
As shown in fig. 5, the guide device 4 includes a guide shaft 41 and a guide groove 42; the number of the guide shafts 41 is two, one end of each guide shaft is fixedly installed on the inner sides of the straight line sections of the first side plate 21 and the second side plate 22, and the other end of each guide shaft extends towards the tail ends of the first side plate 21 and the second side plate 22; the number of the guide grooves 42 is two, one end of each of the guide grooves is fixedly mounted on the base of the guide shaft 41 and is arranged above the guide shaft 41 in parallel, and the other end of each of the guide grooves extends in the guiding direction of the guide shaft 41.
As shown in fig. 6, the throw-off device 5 has a symmetrical structure, and comprises an arc-shaped bracket 51, a throw-off seat 52, a guide cone 53 and a locking sliding table 54; the shape of the arc-shaped support 51 is similar to the outer contour of the pod-shaped support rod 7 and can be attached to the pod-shaped support rod, the throwing-off seat 52 is Contraband-shaped, a vertical surface of the throwing-off seat 52 is provided with a guide hole 521 penetrating through the guide shaft 41, and the two groups of throwing-off seats 52 are symmetrically arranged on two opposite inner side surfaces of the arc-shaped support 51 through the vertical surface; the guide cone 53 is movably inserted in the upper end transverse surface of the throwing-off seat 52, and the locking sliding table 54 is movably arranged on the lower end transverse surface of the throwing-off seat 52; when the throw-off seat 52 penetrates through the guide shaft 41 through the guide hole 521, the arc end of the top of the guide cone 53 can be clamped into the guide groove 42, and the guide cone 53 can move up and down in the throw-off seat 52 to realize the function of separating from the guide groove 42 and simultaneously being connected with the pod-shaped support rod in a clamping manner.
Further, the tail end of the guide groove 42 is inclined downwards and extends to form a horizontal plane, the locking sliding table 54 is provided with a jack 541 right below the guide cone 53, and a preset specific hole is formed in a preset specific position of the pod-shaped support rod 7; in the process that the pod-shaped support rod 7 is driven by the unfolding driving device 3 to extend towards the outer sides of the first side plate 21 and the second side plate 22, two side edges of the pod-shaped support rod 7 are respectively arranged in the throwing-off seat 52 and above the locking sliding table 54; the pushing device 6 pushes the throwing seat 52 to move along the guide shaft 41, the guide cone 53 moves along with the throwing seat 52, when the top of the guide cone 53 moves from the guide groove 42 to the horizontal plane, the horizontal plane presses the guide cone 53, the guide cone 53 moves downwards relative to the throwing seat 52, so that the bottom of the guide cone 53 is pressed against the face of the bean-shaped support rod 7 in the throwing seat 52, when the guide cone 53, a preset specific hole in the bean-shaped support rod 7 and the insertion hole 541 in the locking sliding table 54 are aligned up and down, the guide cone 53 is sequentially inserted into the preset specific hole and the insertion hole 541, and the functions of separating the guide cone 53 from the guide groove 42 and clamping and connecting the bean-shaped support rod 7 are realized.
Further, a transverse groove 521 is formed in the transverse face of the upper end of the throw-off seat 52, and a limiting block 522 is arranged at the tail end of the transverse face of the lower end of the throw-off seat 52; when the throw-off seat 52 and the pod-shaped support rod 7 are separated from the first side plate 21 and the second side plate 22 simultaneously, because the locking sliding table 54 is coaxially mounted with the circular pillar on the throw-off seat 52, the locking sliding table 54 is driven by the pod-shaped support rod 7 to transversely slide together with the guide cone 53 until the locking sliding table 54 is limited at the limit block 522, and the guide cone 53 is clamped into the tail end of the transverse groove 521, so that the guide cone 53 is locked to move up and down.
As shown in fig. 7, the thrust device 6 includes a spring seat 61, a boss 62, a slider 63, and a constant force spring 64; the first side plate 21 and the second side plate 22 are respectively provided with a sliding groove 24 along the guiding direction of the guiding device 4, and the spring seats 61 are respectively fixedly installed on the outer side surfaces of the first side plate 21 and the second side plate 22 and are located at the tail ends of the sliding grooves 24; the shaft sleeve 62 is mounted on the fixed shaft of the spring seat 61 and freely rotates relative to the spring seat 61; the sliding block 63 is arranged in the sliding groove 24, the sliding block 63 is in clearance fit with the first side plate and the second side plate and can linearly slide in a reciprocating manner, and the sliding block 63 contacts with the throwing-off device 5 through a boss extending towards the inner side of the first side plate and the second side plate; the flat end of the constant force spring 64 is fixedly connected with the sliding block 63, and the self-winding part of the constant force spring 64 is coaxially arranged with the shaft sleeve 62; in a preferred embodiment, the spring seat 61, the sleeve 62 and the sliding block 63 are made of nylon, polytetrafluoroethylene or the like with good lubricity.
As shown in fig. 8, two flat sides of the pod-shaped support rod 7 at the predetermined specific position are symmetrically provided with a predetermined specific hole 71, and the predetermined specific hole 71 is a strip-shaped hole, for example, a strip-shaped hole formed by combining two symmetrical U-shaped holes, for the insertion connection of the guiding cone 53 after being pressed down, and the hole design has a better tolerance, so that the insertion failure caused by slow or asynchronous insertion of the guiding cone 53 can be avoided.
In the preferred embodiment, the strip-shaped Velcro 72 is attached to the outer surface of the pod-shaped support rod 7, so that the pod-shaped support rod 7 can be tightly adhered to the mutually overlapped surfaces after being wound, and the pod-shaped support rod 7 is restrained from springing open, thereby reducing the complexity of the design of the restraint and guide functions of the unfolding driving device 3.
As shown in fig. 9, the specific processes of the pod-shaped support rod throwing and unfolding mechanism of the present example are: before separation, as shown in fig. 9(a), the throwing-off device 5 is driven by the constant-force spring 64 to move towards the outside of the frame 2, when the guide cone 53 is pressed by the end plane of the guide groove 42 and pushes downwards against the face of the pod-shaped support rod 7, at this time, the guide cone 53 is to be inserted into the preset specific hole 71 of the pod-shaped support rod 7; in the separation, as shown in fig. 9(b), when the preset specific hole 71 of the pod-shaped support rod 7 moves to below the guide cone 53, the guide cone 53 is completely pressed into the preset specific hole 71 and the insertion hole 541 in the locking slide 54, and at this time, the separation device 5 projects outwardly together with the pod-shaped support rod 7 while being separated from the frame 2, as shown in fig. 9 (c); after separation, under the driving of the transverse resilience generated by the bean clamp-shaped support rod 7, the locking sliding table 54 also moves the guide cone 53 to transversely slide together until the locking sliding table 54 is limited at the limit block 522, and the guide cone 53 is clamped into the tail end of the transverse groove 521, so that the throw-off device 5 is locked on the bean clamp-shaped support rod 7, as shown in fig. 9 (d); the process is repeated until all the throwing-off devices 5 are separated from the frame 2, the pod-shaped support rods are finally and completely extended out by the unfolding driving device 3, and the pod-shaped support rods 7 are thrown off by means of motion inertia, so that the weight reduction of the whole structure is realized.
The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.
Claims (10)
1. A pod-shaped support rod throw-away deployment mechanism, comprising: the device comprises a roller assembly, a frame, an expansion driving device, a guide device, a plurality of groups of throwing-off devices and a thrust device;
the roller assembly, the unfolding driving device and the guiding device are sequentially arranged on the frame, the plurality of groups of throwing devices are sequentially connected to the guiding device in a sliding manner, and the thrust device is arranged on the frame;
the roller assembly is wound with a pod-shaped supporting rod, the expansion driving device drives the pod-shaped supporting rod to extend to the outer side of the frame, the thrust device pushes the throwing-off device to move to the outer side of the frame, when the throwing-off device is extruded by the guide device, the throwing-off device abuts against the rod surface of the pod-shaped supporting rod, and when the preset specific position of the pod-shaped supporting rod moves to the lower side of the throwing-off device, the throwing-off device is locked on the pod-shaped supporting rod and moves together with the pod-shaped supporting rod to the outer side of the frame until the pod-shaped supporting rod breaks away from the frame.
2. The pod support rod throw deployment mechanism of claim 1, wherein the roller assembly comprises a roller and a compression bar;
the pressing strip is fixedly installed on the outer wall of the roller, and one end of the pod-shaped supporting rod is arranged below the pressing strip and is extruded on the roller by the pressing strip.
3. The pod support rod throw deployment mechanism of claim 1, wherein the frame comprises a first side plate, a second side plate, and a skin;
the front parts of the first side plate and the second side plate are of circular surface structures, and the rear parts of the first side plate and the second side plate are of straight line segment structures;
one end of the skin is connected with the circular surface edge of the first side plate, and the other end of the skin is connected with the circular surface edge of the second side plate;
the roller assembly is arranged on the circular surfaces of the first side plate and the second side plate, and the unfolding driving device and the guiding device are sequentially arranged on the inner sides of the straight sections of the first side plate and the second side plate.
4. A pod support rod ejection and deployment mechanism as recited in claim 3, wherein the guide means comprises a guide shaft and a guide slot;
the number of the guide shafts is two, one end of each guide shaft is fixedly arranged on the inner side of the straight line section of the first side plate and the inner side of the straight line section of the second side plate, and the other end of each guide shaft extends towards the tail ends of the first side plate and the second side plate;
the number of guide way is two, one end respectively fixed mounting in on the base of guiding axle and parallel arrangement in the guiding axle top, the other end to the direction of guiding axle extends.
5. The pod-shaped support rod throw-off and deployment mechanism of claim 4, wherein the throw-off device is a symmetrical structure comprising an arc-shaped bracket, a throw-off seat, a guide cone and a locking slide;
the throwing seat is Contraband-shaped, a vertical surface of the throwing seat is provided with a guide hole penetrating through the guide shaft, and the throwing seat is symmetrically arranged on two opposite inner side surfaces of the arc-shaped support through the vertical surface;
the guide cone is movably inserted into the upper end transverse face of the throwing-off seat, and the locking sliding table is movably mounted on the lower end transverse face of the throwing-off seat;
when the throwing seat penetrates through the guide shaft through the guide hole, the top of the guide cone is clamped into the guide groove.
6. The pod-shaped support rod throw-off and deployment mechanism of claim 5, wherein the end of the guide groove is inclined downward and extends to form a horizontal plane, the locking slide table is provided with an insertion hole right below the guide cone, and a preset specific hole is formed at the preset specific position;
in the process that the pod-shaped supporting rod is driven by the unfolding driving device to extend towards the outer sides of the first side plate and the second side plate, two side edges of the pod-shaped supporting rod are respectively arranged in the throwing-off seat and positioned above the locking sliding table; thrust device promotes throw from the seat edge the guiding axle removes, the guide cone is followed throw from the seat and remove together, works as the top of guide cone by the guide way moves to when the horizontal plane, the horizontal plane extrusion the guide cone, the guide cone is relative throw from a downstream, causes the bottom top of guide cone is in throw from the face of pod shape bracing piece in the seat on, work as preset specific hole on guide cone, the pod shape bracing piece and the jack on the locking slip table are just right time from top to bottom, the guide cone inserts in proper order preset specific hole and jack.
7. The pod-shaped support rod throwing and unfolding mechanism according to claim 6, wherein a transverse groove is formed in the upper transverse face of the throwing seat, and a limiting block is arranged at the tail end of the lower transverse face of the throwing seat;
work as throw away seat and pod shape bracing piece and break away from simultaneously during first curb plate and second curb plate, the locking slip table is in under the drive of the horizontal resilience of pod shape bracing piece with the guide cone is horizontal slip together, until the locking slip table is spacing in the stopper, the guide cone is blocked the end of transverse groove.
8. The pod support rod ejection deployment mechanism of claim 3, wherein the thrust device comprises a spring seat, a bushing, a slider, and a constant force spring;
the first side plate and the second side plate are respectively provided with a sliding groove along the guiding direction of the guiding device, and the spring seats are respectively fixedly arranged on the outer side surfaces of the first side plate and the second side plate and are positioned at the tail ends of the sliding grooves;
the shaft sleeve is arranged on the fixed shaft of the spring seat and freely rotates relative to the spring seat;
the sliding block is arranged in the sliding groove, and a boss extending towards the inner side of the first side plate and the second side plate of the sliding block contacts the throwing-off device;
the flat end of the constant force spring is fixedly connected with the sliding block, and the self-winding part of the constant force spring is coaxially installed with the shaft sleeve.
9. A pod support rod ejection and deployment mechanism as claimed in claim 3, wherein the skin is slotted on its surface.
10. The pod support rod ejection and deployment mechanism of claim 6, wherein the predetermined specific aperture is a strip aperture.
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| CN108946339B (en) * | 2018-06-05 | 2019-10-01 | 中国人民解放军国防科技大学 | Device for containing and unfolding bean pod rods |
| CN108664044B (en) * | 2018-06-05 | 2021-03-05 | 中国人民解放军国防科技大学 | Pod rod unfolding process stopping mechanism based on photoelectric switch and control method thereof |
| CN108444906B (en) * | 2018-06-05 | 2020-06-02 | 中国人民解放军国防科技大学 | Testing device and testing method for surface friction coefficient of bean pod rod |
| CN109279049B (en) * | 2018-10-18 | 2021-10-01 | 北京空间飞行器总体设计部 | Elastic extension rod unfolding mechanism |
| CN109204889B (en) * | 2018-11-07 | 2024-02-09 | 哈尔滨工业大学 | Flexible solar wing mechanism |
| CN112340066B (en) * | 2020-11-23 | 2022-04-19 | 中国人民解放军国防科技大学 | Formula of can throwing solar sail spacecraft |
| CN113381159B (en) * | 2021-06-18 | 2022-07-01 | 上海航天测控通信研究所 | Passive adjustment mechanism of film antenna tensile force |
| CN113928891B (en) * | 2021-10-19 | 2022-12-13 | 北京航空航天大学 | Device for containing and unfolding bean pod rods |
| CN113928882B (en) * | 2021-10-19 | 2022-12-20 | 北京航空航天大学 | Thick pod rod stretching device |
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