A large-scale integrated high-storage extension mechanism

Abstract

The patent of the present invention discloses a large-scale integrated high-storage extension mechanism, which specifically relates to the field of aerospace technology. It includes a load-bearing plate, an upper center load-bearing cylinder, a support truss, a lower center load-bearing cylinder, a stacking triangular frame, a folding link, a driving hinge, a slow-release assembly, a clamping rod and a pyrotechnic nut. The upper center load-bearing cylinder is connected between the load-bearing plate and the support truss, and the support truss is provided with a support ring; the lower center load-bearing cylinder is provided with a fixed plate; the folding link is rotatably connected to the stacking triangular frame, and the free ends of the two folding links are rotatably connected. The slow-release assembly is used to slowly release the folding link; the clamping rod is passed through the stacking triangular frame, and a disc spring is connected between the pyrotechnic nut and the clamping rod. The technical solution of the present invention solves the problem that the extension mechanism cannot provide the load-bearing function or requires an additional auxiliary support structure for a large payload, thereby achieving a smaller folded volume, lighter weight and a larger extension and retraction ratio.

Description

Technical Field

[0001] The present invention relates to the field of aerospace technology, and in particular to a large-scale integrated high-storage and extension mechanism. Background Art

[0002] The extension mechanism is a crucial positioning and support component for payloads extending long distances in space. With the development of the aerospace sector worldwide, the demand for large-scale, one-dimensional extension mechanisms is becoming increasingly urgent. These extension mechanisms typically extend over ten meters in length and remain stowed within the launch vehicle during launch, secured within the fairing atop the vehicle. Once in orbit, they are deployed according to ground control instructions or established procedures, gradually deploying in accordance with the mechanism's design. Once deployed, they enter a locked position, securing the payload in its designated position for operation.

[0003] Currently, large-scale space extension mechanisms are widely used to support or deploy payloads such as large solar panels or battery arrays, synthetic aperture radars, and space telescopes. These mechanisms primarily consist of complex retractable rod systems. The mechanical environment in which payloads are subjected during the ascent phase of a launch vehicle is extremely harsh. For large payloads, these mechanisms are unable to support the load or require additional auxiliary support structures. This can easily lead to payload damage, reduced deployment reliability, and excessive overall spacecraft mass or dimensions. Summary of the Invention

[0004] The present invention aims to provide a large-scale integrated high-storage extension mechanism, which solves the problem that the extension mechanism cannot provide the bearing function or requires additional auxiliary support structure when the payload is large in mass.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the present invention is as follows: a large-scale integrated high-storage and extension mechanism, comprising a bearing component, a stowage and extension component and a compression component,

[0006] The bearing assembly includes a bearing plate, an upper center bearing cylinder, a plurality of support trusses and a lower center bearing cylinder, a through hole connected to the upper center bearing cylinder is opened in the middle of the bearing plate, the upper center bearing cylinder is fixedly connected to the bearing plate, and the plurality of support trusses are circumferentially distributed on the outside of the center bearing cylinder, one side of each of the support trusses is fixedly connected to the bearing plate and the upper center bearing cylinder, and the other side of each of the support trusses is commonly connected to a support ring; the lower center bearing cylinder is slidably connected in the upper center bearing cylinder, the free end of the lower center bearing cylinder is connected to a fixed plate, and the fixed plate is connected to the support platform;

[0007] The stowage assembly includes a plurality of stacked triangular frames, a plurality of folding links, and a slow-release assembly. The plurality of stacked triangular frames are stacked in sequence from top to bottom, the stacked triangular frame on the top layer is fixedly connected to the supporting truss, and the plurality of folding links are rotatably connected to the three corners of each stacked triangular frame from top to bottom. Each corner of each stacked triangular frame is rotatably connected to a folding link, and the free ends of two adjacent folding links on the same side are rotatably connected. The slow-release assembly is used to connect two adjacent stacked triangular frames and can achieve slow release.

[0008] The clamping assembly includes multiple clamping rods and pyrotechnic nuts. Each of the clamping rods is inserted into all stacked triangular frames on the same side. The pyrotechnic nut is connected between the corresponding clamping rod and the support platform. A disc spring is connected between the pyrotechnic nut and the clamping rod.

[0009] Furthermore, a driving hinge is rotatably connected between the free ends of the two adjacent folding links on the same side, and each driving hinge includes a rotating shaft and a sleeve. The rotating shaft is passed through the two folding links, and the rotating shaft is covered with a torsion spring connected between the two folding links. The sleeve is fixedly connected to any folding link, and both ends of the sleeve are provided with a steel ball located on the outside of the sleeve. A spring is connected between the two steel balls, and the two folding links are passed through a limiting hole for sliding connection of the steel balls, and any limiting hole is located on the movement trajectory of the other limiting hole.

[0010] Through the above setting, when the two adjacent folding links rotate relative to each other, the two limiting holes on the two folding links rotate relative to each other. When the two folding links are fully unfolded, the two limiting holes are connected. At this time, the steel ball slides into the corresponding limiting hole under the elastic force of the spring to lock the two folding links, thereby improving the stability of the overall structure after unfolding.

[0011] Furthermore, the slow-release assembly includes connecting blocks and multiple limiting rods with the same number of vertices on the stacked triangular frames. The multiple connecting blocks are fixedly connected at the corresponding vertices of each stacked triangular frame. One side of each connecting block is provided with two first connecting grooves set at intervals, and the other side of each connecting block is provided with a second connecting groove located between the two first connecting grooves. One side of the limiting rod is rotatably connected between the two first connecting grooves on the connecting block, and the other side of each limiting rod is inserted into the second connecting groove on the connecting block spaced apart from the connected first connecting groove.

[0012] Through the above-mentioned setting, the connecting block between the two spaced connecting blocks can be limited by means of the limiting rod, the first connecting groove and the second connecting groove. When the connecting block located on the lower side moves downward under the drive of the folding connecting rod, the limiting rod can be turned out from the other connecting block through the torsion spring, thereby unlocking the adjacent connecting blocks, achieving the effect of releasing the folding connecting rods in sequence from bottom to top, and improving the success rate and stability of this solution.

[0013] Compared with the existing technology, this solution has the following beneficial effects:

[0014] This solution enables the payload to automatically deploy after entering orbit and lock at the predetermined position. At the same time, it bears all or part of the overload and vibration of the carrier's ascent section, maintains the stability of the payload and the deployment function of the extension mechanism. It has a smaller folded volume, lighter weight, a larger deployment ratio, and better mechanical properties. It can withstand high temperatures and high radiation doses and adapt to the harsh environment of in-orbit work. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an axonometric view of a large-scale integrated high-storage and extension mechanism of the present invention in a folded state;

[0016] Figure 2 This is a front view of a large-scale integrated high-storage and extension mechanism of the present invention in a folded state;

[0017] Figure 3 yes Figure 2 A partial enlarged view of point A in the middle;

[0018] Figure 4 This is an axonometric view of a large-scale integrated high-storage extension mechanism of the present invention in an extended state;

[0019] Figure 5 Schematic diagram of the structure of the stowage assembly in this embodiment;

[0020] Figure 6 is a cross-sectional view of the compression assembly in this embodiment;

[0021] Figure 7 Schematic diagram of the structure of the triangular connection frame in this embodiment;

[0022] Figure 8 Schematic diagram of the structure of the connection between two folding links in this embodiment;

[0023] Figure 9 It is a cross-sectional view of the sleeve in this embodiment. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below through specific embodiments:

[0025] The figure marks in the drawings of the specification include: bearing plate 1, upper center bearing cylinder 2, supporting truss 3, supporting ring 4, first pyrotechnic nut 5, fixing plate 6, stacking triangular frame 7, folding connecting rod 8, triangular connecting frame 9, connecting plate 10, connecting cylinder 11, rotating shaft 12, sleeve 13, steel ball 14, spring 15, connecting block 16, limiting rod 17, first connecting groove 18, second connecting groove 19, clamping rod 20, second pyrotechnic nut 21, disc spring 22, lower center bearing cylinder 23, sealing cover 24.

[0026] Example

[0027] As attached Figure 1-9 As shown, a large-scale integrated high-storage and extension mechanism includes a load-bearing component, a retracting and extending component, and a pressing component.

[0028] The bearing assembly includes a bearing plate 1, an upper center bearing tube 2, a plurality of support trusses 3 and a lower center bearing tube 23. The bearing plate 1 is used to bear the load. A through hole connected to the upper center bearing tube 2 is provided in the middle of the bearing plate 1. The upper center bearing tube 2 is fixedly connected to the bearing plate 1. Six reinforcing ribs are circumferentially welded on the inner side of the upper center bearing tube 2. A plurality of support trusses 3 are circumferentially distributed on the outer side of the center bearing tube. In this embodiment, the number of support trusses 3 is six. The upper side of each support truss 3 is welded between the bearing plate 1 and the upper center bearing tube 2. A support ring 4 is welded to the bottom of all the support trusses 3. The support ring 4 is connected to the support platform through a first pyrotechnic nut 5. A plurality of first pyrotechnic nuts 5 are circumferentially distributed on the support ring 4. The lower center bearing cylinder 23 is slidably connected to the upper center bearing cylinder 2. After the extension mechanism is unfolded, the lower center bearing cylinder 23 will slide out of the upper center bearing cylinder 2. The bottom of the lower center bearing cylinder 23 is fixedly connected to a fixed plate 6, and the fixed plate 6 is fixedly connected to the support platform.

[0029] The folding and unfolding assembly includes a plurality of stacked triangular frames 7, a plurality of folding links 8, and a slow-release assembly. The plurality of stacked triangular frames 7 are stacked in sequence from top to bottom. The stacked triangular frames 7 on the top layer are fixedly connected to the support truss 3 via a triangular connecting frame 9, and the stacked triangular frames 7 on the bottom layer are fixedly connected to the fixed plate 6. Each stacked triangular frame 7 is composed of three connecting plates 10 and three connecting tubes 11 connected between two adjacent connecting plates 10. The three connecting plates 10 and the three connecting tubes 11 enclose a triangular area, and the vertices of the triangular area are chamfered. The chamfering can avoid interference between the slow-release assembly and the folding links 8, thereby enhancing the stability of the present solution. The plurality of folding links 8 are rotated and connected to the outside of the three corners of each stacked triangular frame 7 from top to bottom. Each corner of each stacking triangle frame 7 is rotatably connected to a folding link 8. A driving hinge is rotatably connected between the free ends of two adjacent folding links 8 on the same side. Each driving hinge includes a rotating shaft 12 and a sleeve 13. The rotating shaft 12 passes between the free ends of the two adjacent folding links 8. The rotating shaft 12 is coated with a torsion spring connected between the two adjacent folding links 8, and the ends of the torsion spring are respectively fixedly connected to the two folding links 8. The sleeve 13 is fixedly connected to the folding link 8 located on the upper side of the two adjacent folding links 8. Both ends of the sleeve 13 are equipped with a steel ball 14 on one side located outside the sleeve 13. A spring 15 is connected between the two steel balls 14. During operation, the spring 15 is always in a compressed state. Both folding links 8 are pierced with a limit hole through which the steel ball 14 is slidably connected, and one limit hole is located on the motion trajectory of the other limit hole.

[0030] The slow-release assembly is used to connect two adjacent stacked triangular frames 7 and achieve slow release. The slow-release assembly includes a connecting block 16 and a plurality of limiting rods 17, the same number of which is equal to the number of vertices on the stacked triangular frames 7. The multiple connecting blocks 16 are fixedly connected to the corresponding vertices of each stacked triangular frame 7. Each connecting block 16 adopts an arc-shaped structure and is integrally formed with the corresponding connecting plate 10. Each connecting block 16 is located on the outside of the corresponding connecting plate 10, and the connecting block 16 and the corresponding connecting plate 10 form a J-shape. The lower side of each connecting block 16 is provided with two first connecting grooves 18 spaced apart, and the upper side of each connecting block 16 is provided with a second connecting groove 19 located between the two first connecting grooves 18. The two first connecting grooves 18 are symmetrically arranged with the second connecting groove 19 as the center. The two first connecting grooves 18 and the second connecting grooves 19 are both oblique grooves, and the oblique groove structure facilitates the rotation of the limiting rod 17. The lower side of the limiting rod 17 is rotatably connected between the two first connecting grooves 18 on the connecting block 16, and the upper side of each limiting rod 17 is inserted into a second connecting groove 19 on the connecting block 16 spaced apart from the connected first connecting groove 18.

[0031] The clamping assembly includes multiple clamping rods 20 and second pyrotechnic nuts 21. Each clamping rod 20 is inserted into the sleeve 13 of all stacked triangular frames 7 on the same side. The top of the sleeve 13 is finally covered with a sealing cover 24. The second pyrotechnic nut 21 is connected between the corresponding clamping rod 20 and the support platform. A disc spring 22 is connected between the second pyrotechnic nut 21 and the clamping rod 20.

[0032] The working process of this program:

[0033] When this scheme is in the folded state, the folding links 8 in the folding and unfolding assembly are arranged parallel to each other in the space enclosed by the support truss 3, thereby reducing the volume of the folding and unfolding mechanism when it is in the folded state; at the same time, the second pyrotechnic nut 21 connects the lower side of the clamping rod 20 to the fixed plate 6. At this time, the disc spring 22 is in a compressed state, and the first pyrotechnic nut 5 connects the support ring 4 to the support platform, thereby achieving double limiting.

[0034] How this program is deployed:

[0035] S1. The first pyrotechnic nut 5 on the supporting ring 4 at the bottom of the supporting truss 3 is detonated. At this time, the supporting ring 4 is separated from the supporting platform, thereby realizing the separation of the bearing assembly and the supporting platform.

[0036] S2. The second pyrotechnic nut 21 on the pressing assembly is detonated. At this time, the pressing rod 20 is separated from the fixing plate 6 under the action of the disc spring 22. After the pressing rod 20 is separated from the fixing plate 6, the folding link 8 located at the lower side rotates under the action of the torsion spring. After the folding link 8 rotates, it drives the stacking triangle frame 7 to move upward, so that the stacking triangle frame 7 drives the connecting block 16 to push the limit rod 17 upward, thereby unlocking and unfolding the folding links 8 in the stowage assembly from bottom to top.

[0037] S3. When the two adjacent folding links 8 rotate to the same straight line, the limiting holes on the two folding links 8 are connected, so that the steel ball 14 in the sleeve 13 slides into the limiting hole on the outside, thereby locking the folding link 8 under the action of the spring 15 and the steel ball 14, realizing a large-scale integrated high-storage extension mechanism to be fully unfolded, and the payload reaches the predetermined position, and the unfolding is completed.

[0038] The above are only embodiments of the present invention, and common knowledge such as the specific structure and / or characteristics of the scheme are not described in detail here. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several variations and improvements can be made, which should also be regarded as the scope of protection of the present invention, and these will not affect the effect of the implementation of the present invention and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A large-scale integrated high-storage and extension mechanism, characterized by: Including bearing components, retraction components and compression components, The bearing assembly includes a bearing plate, an upper center bearing cylinder, a plurality of support trusses and a lower center bearing cylinder, a through hole connected to the upper center bearing cylinder is opened in the middle of the bearing plate, the upper center bearing cylinder is fixedly connected to the bearing plate, and the plurality of support trusses are circumferentially distributed on the outside of the center bearing cylinder, one side of each of the support trusses is fixedly connected to the bearing plate and the upper center bearing cylinder, and the other side of each of the support trusses is commonly connected to a support ring; the lower center bearing cylinder is slidably connected in the upper center bearing cylinder, the free end of the lower center bearing cylinder is connected to a fixed plate, and the fixed plate is connected to the support platform; The stowage assembly includes a plurality of stacked triangular frames, a plurality of folding links, and a slow-release assembly. The plurality of stacked triangular frames are stacked in sequence from top to bottom, the stacked triangular frame on the top layer is fixedly connected to the supporting truss, and the plurality of folding links are rotatably connected to the three corners of each stacked triangular frame from top to bottom. Each corner of each stacked triangular frame is rotatably connected to a folding link, and the free ends of two adjacent folding links on the same side are rotatably connected. The slow-release assembly is used to connect two adjacent stacked triangular frames and can achieve slow release. The clamping assembly includes a plurality of clamping rods and pyrotechnic nuts, each of the clamping rods is provided on all stacked triangular frames on the same side, the pyrotechnic nut is connected between the corresponding clamping rod and the support platform, and a disc spring is connected between the pyrotechnic nut and the clamping rod; The free ends of the two adjacent folding links on the same side are rotatably connected with a driving hinge, and each driving hinge includes a rotating shaft and a sleeve. The rotating shaft is passed through the two folding links, and the rotating shaft is covered with a torsion spring connected between the two folding links. The sleeve is fixedly connected to any folding link, and both ends of the sleeve are provided with a steel ball located on the outside of the sleeve. A spring is connected between the two steel balls, and the two folding links are passed through a limiting hole for sliding connection of the steel ball, and any limiting hole is located on the movement trajectory of the other limiting hole.

2. The large-scale integrated high storage and extension mechanism according to claim 1, characterized in that: The slow-release assembly includes connecting blocks and multiple limiting rods with the same number as the vertices on the stacked triangular frames. The multiple connecting blocks are fixedly connected at the corresponding vertices of each stacked triangular frame. One side of each connecting block is provided with two first connecting grooves set at intervals, and the other side of each connecting block is provided with a second connecting groove located between the two first connecting grooves. One side of the limiting rod is rotatably connected between the two first connecting grooves on the connecting block, and the other side of each limiting rod is inserted into the second connecting groove on the connecting block spaced apart from the connected first connecting groove.

Images