Decoupling mechanism and spacecraft
By using a decoupling mechanism for the fork, drive frame, pivot, and linkage wheel, the problem of limited deployment angle of the celestial structure is solved, enabling low-cost deployment and decoupling of the celestial structure and simplifying the design.
Patent Information
- Application Number
- CN202520182192.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-05
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2035-02-05
AI Technical Summary
In existing technologies, the unfolding angle between celestial structures is limited, resulting in insufficient folding and unfolding. Furthermore, the addition of hinges and drive mechanisms is costly and complex in design.
A decoupling mechanism consisting of a fork, drive frame, pivot, and linkage wheel is adopted. The celestial structure is connected to the connection ends of the fork and drive frame respectively. The deployment and decoupling of the celestial structure are realized by using the linkage wheel and the pin assembly, which reduces friction and simplifies the design.
It enabled the free unfolding of the celestial structure, reduced costs, simplified the design, and avoided the need for additional equipment.
Smart Images
Figure CN223764711U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of spacecraft equipment technology, and more specifically, to a decoupling mechanism and a spacecraft. Background Technology
[0002] Decoupling the deployment of celestial structures such as solar panels, sunshades, and antennas is a crucial aspect of the design of spacecraft such as satellites. It ensures that solar panels are fully exposed to sunlight while in orbit, providing the necessary power to the satellite, protecting sensitive instruments from direct sunlight or other environmental factors, maintaining optimal operating temperatures for the equipment, and establishing communication connections.
[0003] In related technologies, celestial structures are connected by hinges to ensure linkage. However, due to the limited rotation angle of the hinges and the complex linkage between different celestial structures, the unfolding angle of different celestial structures is limited when unfolding from the folded state, which is not conducive to the folding and unfolding of different celestial structures. In order to make the unfolding angle between celestial structures unrestricted, related technologies generally use devices such as adding hinges, drive connecting shafts and corresponding drive mechanisms at different positions of the celestial structures to increase the unfolding angle of the celestial structures. However, the cost is too high and the design is more complicated. Utility Model Content
[0004] The problem solved by this invention is how to achieve deployment decoupling simply and at low cost.
[0005] To address the aforementioned problems, this utility model provides a decoupling mechanism and a spacecraft.
[0006] In a first aspect, this utility model provides a decoupling mechanism, including a fork, a drive frame, a rotating shaft, and a linkage wheel. The fork connecting end of the fork and the drive frame connecting end of the drive frame are respectively used to connect two different celestial structures. The linkage wheel is used to connect a linkage rope. The fork linkage end of the fork, the drive frame linkage end of the drive frame, and the linkage wheel are rotatably connected through the rotating shaft. A joint bearing is provided at the connection between the drive frame linkage end and the rotating shaft. A pin assembly is provided inside the linkage wheel. The pin assembly is used to connect with the drive frame when the fork and the drive frame are in a folded state, and to connect with the fork when the drive frame rotates around the rotating shaft to an unfolded state. The folded state and the unfolded state refer to the relative positions of the fork and the drive frame.
[0007] Optionally, the fork carriage linkage end includes a first linkage plate and a second linkage plate, the first linkage plate and the second linkage plate being spaced apart on the fork carriage connection end, the linkage wheel being disposed between the first linkage plate and the second linkage plate, the drive frame linkage end being disposed between the first linkage plate and the linkage wheel, and a first through hole being provided at the corresponding positions of the end of the first linkage plate away from the fork carriage connection end, the drive frame linkage end, the linkage wheel, and the end of the second linkage plate away from the fork carriage connection end, and the rotating shaft passing through each of the first through holes in sequence.
[0008] Optionally, the second linkage plate has a groove at one end near the fork connecting end, and at least a portion of the drive frame connecting end is accommodated in the groove when in the folded state.
[0009] Optionally, the pin assembly includes a pin body and a spring. The drive frame linkage end has a first waist-shaped hole, and the second linkage plate has a second waist-shaped hole. The pin body is slidably installed in the linkage wheel along the direction in which the first linkage plate and the second linkage plate are spaced apart. The spring is disposed between the pin body and the linkage wheel. The pin body is used to engage with the first waist-shaped hole in the folded state and abut against the side surface of the second linkage plate facing the first linkage plate under the action of the spring. In the unfolded state, the pin body engages with the second waist-shaped hole under the action of the spring.
[0010] Optionally, the linkage wheel has a connected second through hole and a third through hole inside, the diameter of the second through hole is larger than the diameter of the third through hole, the outer surface of the pull pin body has a circumferentially provided protruding ring, the outer diameter of the protruding ring is adapted to the diameter of the second through hole, the pull pin body passes through the second through hole and the third through hole in sequence, and is engaged with the first waist-shaped hole, the spring is housed in the second through hole and sleeved on the pull pin body, the two ends of the spring respectively abut against the protruding ring and the end face of the second through hole near the third through hole.
[0011] Optionally, the fork connecting end includes two connecting plates, and the two connecting plates are respectively perpendicularly connected to the fork linkage end (12).
[0012] Optionally, the end of the rotating shaft near the first linkage plate is provided with an external thread and a corresponding nut.
[0013] Optionally, the number of the pin-pulling components is two, and the two pin-pulling components are symmetrically arranged in the linkage wheel.
[0014] Optionally, both the fork connecting end and the drive frame connecting end are provided with bolt holes.
[0015] Secondly, this utility model provides a spacecraft that uses the decoupling mechanism described in the first aspect.
[0016] The beneficial effects of this decoupling mechanism and spacecraft are:
[0017] Two different celestial structures are connected via the fork-mounted connecting end and the drive-mounted connecting end, respectively. The fork-mounted linkage end and the drive-mounted linkage end are rotatably connected via a pivot, allowing the two celestial structures to move relative to each other under the action of a drive motor. The use of spherical bearings reduces friction between the drive-mounted linkage end and the pivot due to relative rotation, resulting in smoother rotation. In the folded state, the linkage wheel's pin assembly connects to the drive-mount and rotates with it, enabling coordinated movement of the celestial structure connected to the linkage wheel and the celestial structure connected to the drive-mount. This allows adjustment of the deployment angle between the two structures, such as the solar panels and the next set of hinge mechanisms, to achieve deployment requirements. Simultaneously, the fork-mount is not restricted, allowing the celestial structure connected to the fork-mount to rotate freely relative to the celestial structure connected to the drive-mount, thus achieving the required deployment angle. By connecting the pin assembly to the fork frame in the unfolded state, the linkage between the drive frame and the linkage wheel can be disconnected. Thus, after the unfolding requirement is met, the linkage between the star structure connected by the linkage rope and the star structure connected to the drive frame is disconnected, achieving decoupling between the drive frame and the linkage wheel. This allows the drive frame to rotate freely without being constrained by the linkage wheel, thereby completing the unfolding of the star structure. Compared with related technologies, this setup not only simplifies the unfolding of different star structures but also eliminates the need for additional equipment, resulting in lower costs. Attached Figure Description
[0018] Figure 1 This is one of the structural schematic diagrams of the decoupling mechanism in its deployed state provided in an embodiment of this utility model;
[0019] Figure 2 A cross-sectional schematic diagram of the decoupling mechanism provided in an embodiment of this utility model;
[0020] Figure 3 This is one of the structural schematic diagrams of the decoupling mechanism in its folded state provided in an embodiment of the present utility model;
[0021] Figure 4 A cross-sectional schematic diagram of the decoupling mechanism in its folded state provided in an embodiment of this utility model;
[0022] Figure 5 This is the second schematic diagram of the decoupling mechanism in its deployed state provided in an embodiment of the present invention.
[0023] Figure 6A cross-sectional schematic diagram of the decoupling mechanism in its unfolded state according to an embodiment of this utility model;
[0024] Figure 7 The second schematic diagram of the decoupling mechanism in its folded state provided in this embodiment of the utility model;
[0025] Figure 8 The third schematic diagram of the decoupling mechanism in its unfolded state provided in this embodiment of the utility model.
[0026] Explanation of reference numerals in the attached figures:
[0027] 1. Fork carriage; 11. Fork carriage connecting end; 12. Fork carriage linkage end; 121. First linkage plate; 122. Second linkage plate; 2. Drive frame; 21. Drive frame connecting end; 22. Drive frame linkage end; 3. Rotary shaft; 4. Linkage wheel; 41. Pull pin assembly; 411. Pull pin body; 412. Spring; 42. Joint bearing. Detailed Implementation
[0028] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Although some embodiments of this utility model are shown in the drawings, it should be understood that this utility model can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this utility model. It should be understood that the drawings and embodiments of this utility model are for illustrative purposes only and are not intended to limit the scope of protection of this utility model.
[0029] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first," "second," etc., mentioned in this utility model are only used to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies.
[0030] It should be noted that the terms "one" and "multiple" used in this utility model are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".
[0031] To address the problems existing in the aforementioned related technologies, this embodiment provides a decoupling mechanism and a spacecraft.
[0032] like Figure 1 and Figure 2 As shown in the figure, an embodiment of the present invention provides a decoupling mechanism, including a fork 1, a drive frame 2, a rotating shaft 3, and a linkage wheel 4. The fork connecting end 11 of the fork 1 and the drive frame connecting end 21 of the drive frame 2 are respectively used to connect two different celestial structures. The linkage wheel 4 is used to connect a linkage rope. The fork linkage end 12 of the fork 1, the drive frame linkage end 22 of the drive frame 2, and the linkage wheel 4 are rotatably connected through the rotating shaft 3. A joint bearing 42 is provided at the connection between the drive frame linkage end 22 and the rotating shaft 3. A pin assembly 41 is provided inside the linkage wheel 4. The pin assembly 41 is used to connect with the drive frame 2 when the fork 1 and the drive frame 2 are in a folded state, and to connect with the fork 1 when the drive frame 2 rotates around the rotating shaft 3 to an unfolded state. The folded state and the unfolded state refer to the relative positions of the fork 1 and the drive frame 2.
[0033] Specifically, the fork connecting end 11 of the fork 1 and the drive frame connecting end 21 of the drive frame 2 are respectively used to connect two different celestial structures, for example, such as Figure 7 and Figure 8As shown, the fork connecting end 11 is connected to the solar array, and the drive frame connecting end 21 is connected to the celestial linkage; alternatively, the fork connecting end 11 is connected to the celestial linkage, and the drive frame connecting end 21 is connected to the solar array. The linkage wheel 4 is equipped with a linkage rope end mechanism for connecting the linkage rope. The linkage rope can connect to the next set of hinge mechanisms or other celestial structures associated with the solar array and the celestial linkage. The fork carriage 1's fork carriage linkage end 12, the drive frame 2's drive frame linkage end 22, and the linkage wheel 4 are rotatably connected via a rotating shaft 3. Specifically, the fork carriage linkage end 12, the drive frame linkage end 22, and the linkage wheel 4 are fitted onto the rotating shaft 3. The fork carriage linkage end 12 is fixed relative to the rotating shaft 3, while the drive frame linkage end 22 rotates relative to the rotating shaft 3. When the drive frame 2 and the linkage wheel 4 are linked under the action of the pull-out pin assembly 41, the linkage wheel 4 and the drive frame 2 rotate together relative to the rotating shaft 3. In other words, the fork carriage linkage end 12 can remain stationary, while the drive frame linkage end 22 can rotate relative to the rotating shaft 3. Therefore, a spherical bearing 42 is provided at the connection between the drive frame linkage end 22 and the rotating shaft 3 to fix the shaft system relationship, reduce the friction caused by the shaft system rotation, and thus solve the problem of the pull-out pin assembly 41 jamming. The pull-out pin assembly 41 is used to connect with the drive frame 2 when the fork carriage 1 and the drive frame 2 are in the folded state, and to connect with the fork carriage 1 when the drive frame 2 rotates around the rotating shaft 3 to the unfolded state. Both the folded and unfolded states refer to the fork carriage... The relative positions of the fork connecting end 11 and the drive frame connecting end 21 are defined as follows: In the folded state, the fork connecting end 11 and the drive frame connecting end 21 are close to each other, and the angle between them is within a preset range of small acute angles. In the unfolded state, the fork connecting end 11 and the drive frame connecting end 21 are far apart, and the angle between them is outside a preset range. Specifically, in the folded state, the pin assembly 41 is connected to the drive frame 2, fixing the linkage wheel 4 and the drive frame 2 relatively. The drive frame 2 is constrained by the linkage wheel 4, meaning the corresponding celestial structures connected to the drive frame 2 and the linkage wheel 4 are mutually constrained and unfold relative to the solar array connected to the fork 1. In the unfolded state, the pin assembly 41 is connected to the fork 1 and disconnected from the drive frame 2. The drive frame 2 is no longer constrained by the linkage wheel 4, completing the decoupling between the drive frame 2 and the linkage wheel 4, allowing the drive frame 2 to move freely. In other words, the corresponding celestial structures connected to the drive frame 2 and the linkage wheel 4 are decoupled and allowed to move freely.
[0034] It should be understood that the movement of the fork 1 and drive frame 2 is controlled by an external motor, such as... Figure 7 and Figure 8 As shown, a drive motor is connected between the solar array and the star linkage. The drive motor rotates to drive the solar array and the star linkage to move, thereby causing the fork 1, the linkage wheel 4 and the drive frame 2 to move.
[0035] In this embodiment, two different celestial structures are connected via the fork connecting end 11 of the fork 1 and the drive frame connecting end 21 of the drive frame 2, respectively. The fork linkage end 12 and the drive frame linkage end 22 are rotatably connected via the rotating shaft 3, allowing the two different celestial structures to move relative to each other under the action of the drive motor. Furthermore, the application of the spherical bearing 42 reduces the friction between the drive frame linkage end 22 and the rotating shaft 3 due to relative rotation, resulting in smoother rotation. When the linkage wheel 4's pin assembly 41 is in the folded state, it connects to the drive frame 2 and rotates with it. This allows the celestial structure connected to the linkage wheel 4 via the linkage rope and the celestial structure connected to the drive frame 2 to move in unison, thereby adjusting the deployment angle between them to meet the deployment requirements of components such as the solar panel and the next set of hinge mechanisms. Simultaneously, the freedom of the fork 1 is not limited, allowing the celestial structure connected to the fork 1 to rotate freely relative to the celestial structure connected to the drive frame 2, thus enabling the celestial structure connected to the fork 1 to achieve the corresponding deployment angle requirements. Then, by connecting the pin assembly 41 to the fork 1 in the unfolded state, the drive frame 2 can be disconnected from the linkage wheel 4. Thus, after the unfolding requirement is met, the linkage between the star structure connected by the linkage rope and the star structure connected to the drive frame 2 is disconnected, thereby decoupling the drive frame 2 and the linkage wheel 4. This allows the drive frame 2 to rotate freely without being constrained by the linkage wheel 4, thus completing the unfolding of the star structure. Compared with related technologies, this setup not only simplifies the unfolding of different star structures but also eliminates the need for additional equipment, resulting in lower costs.
[0036] Optionally, the fork linkage end 12 includes a first linkage plate 121 and a second linkage plate 122, which are spaced apart on the fork connection end 11. The linkage wheel 4 is located between the first linkage plate 121 and the second linkage plate 122. The drive frame linkage end 22 is located between the first linkage plate 121 and the linkage wheel 4. The end of the first linkage plate 121 away from the fork connection end 11, the drive frame linkage end 22, the linkage wheel 4, and the end of the second linkage plate 122 away from the fork connection end 11 are all provided with first through holes. The rotating shaft 3 passes through each of the first through holes in sequence.
[0037] Specifically, such as Figure 1 , Figure 3 , Figure 5 , Figure 7 and Figure 8As shown, the fork carriage linkage end 12 includes a first linkage plate 121 and a second linkage plate 122. The first linkage plate 121 and the second linkage plate 122 are spaced apart on the fork carriage connection end 11 and are perpendicular to the fork carriage connection end 11. The linkage wheel 4 is located between the first linkage plate 121 and the second linkage plate 122 and is located at the end of the first linkage plate 121 and the second linkage plate 122 away from the fork carriage connection end 11. The drive frame linkage end 22 is located between the first linkage plate 121 and the linkage wheel 4. The end of the first linkage plate 121 away from the fork carriage connection end 11, the drive frame linkage end 22, the linkage wheel 4, and the end of the second linkage plate 122 away from the fork carriage connection end 11 are all provided with first through holes. The rotating shaft 3 passes through each of the first through holes in sequence, so that the fork carriage linkage end 12, the drive frame linkage end 22, and the linkage wheel 4 are rotatably connected by the rotating shaft 3.
[0038] Optionally, the second linkage plate 122 has a groove at one end near the fork connecting end 11, and at least a portion of the drive frame connecting end 21 is accommodated in the groove when in the folded state.
[0039] Specifically, such as Figure 3 and Figure 5 As shown, the second linkage plate 122 has a groove at one end near the fork connection end 11 so that at least part of the drive frame connection end 21 is accommodated in the groove when it is folded, thereby reducing the space occupied by the decoupling mechanism, making it easier to store and saving materials.
[0040] Optionally, the pin-pulling assembly 41 includes a pin-pulling body 411 and a spring 412. The drive frame linkage end 22 has a first waist-shaped hole, and the second linkage plate 122 has a second waist-shaped hole. The pin-pulling body 411 is slidably installed in the linkage wheel 4 along the direction in which the first linkage plate 121 and the second linkage plate 122 are spaced apart. The spring 412 is disposed between the pin-pulling body 411 and the linkage wheel 4. The pin-pulling body 411 is used to engage with the first waist-shaped hole in the folded state and abut against the side surface of the second linkage plate 122 facing the first linkage plate 121 under the force of the spring 412. In the unfolded state, the pin-pulling body 411 engages with the second waist-shaped hole under the force of the spring 412.
[0041] Specifically, such as Figure 2 As shown, the pin-pulling assembly 41 includes a pin-pulling body 411 and a spring 412. The drive frame linkage end 22 has a first oblong hole, and the second linkage plate 122 has a second oblong hole, as shown. Figure 4As shown, the pin body 411 is slidably mounted in the linkage wheel 4 along the direction in which the first linkage plate 121 and the second linkage plate 122 are spaced apart. A spring 412 is disposed between the pin body 411 and the linkage wheel 4. The pin body 411 is used to engage with the first oblong hole in the folded state. At this time, the pin body 411 abuts against the upper surface of the second linkage plate 122 under the elastic force of the spring 412. Due to the position of the second oblong hole, the pin body 411 cannot fall into the second oblong hole under the force of the spring 412, but instead abuts against the side surface of the second linkage plate 122 facing the first linkage plate 121. When the drive frame 2 and the linkage wheel 4 rotate a certain angle, for example, from 0° to 170°, then... Figure 6 As shown, the pin body 411 rotates to above the second oblong hole. Under the action of the spring 412, the pin body 411 pops out from the first oblong hole and falls into the second oblong hole. That is, when changing from the folded state to the unfolded state, it engages with the second oblong hole under the force of the spring 412, thereby completing the decoupling between the drive frame 2 and the linkage wheel 4. The setting of the first oblong hole and the second oblong hole allows the pin body 411 to have room to move within the hole and increases the contact area when the pin body 411 enters the second oblong hole from the first oblong hole, so as to avoid the problem of the pin body 411 getting stuck in the first oblong hole and not being able to enter the second oblong hole smoothly, thus ensuring smooth decoupling. Preferably, the first oblong hole and the second oblong hole can extend in an arc around the rotating shaft 3.
[0042] Optionally, the linkage wheel 4 has a connected second through hole and a third through hole inside, the diameter of the second through hole is larger than the diameter of the third through hole, the outer surface of the pin body 411 has a circumferentially provided protruding ring, the outer diameter of the protruding ring is adapted to the diameter of the second through hole, the pin body 411 passes through the second through hole and the third through hole in sequence, and is engaged with the first waist-shaped hole, the spring 412 is housed in the second through hole and sleeved on the pin body 411, the two ends of the spring 412 respectively abut against the protruding ring and the end face of the second through hole near the third through hole.
[0043] Specifically, such as Figure 2As shown, the linkage wheel 4 has a second through hole and a third through hole inside, the diameter of the second through hole is larger than the diameter of the third through hole. The outer surface of the pin body 411 has a circumferential protrusion ring, the outer diameter of which is adapted to the diameter of the second through hole. The pin body 411 passes through the second through hole and the third through hole in sequence, that is, it enters through the second through hole and exits through the third through hole, and engages with the first waist-shaped hole. The spring 412 is housed in the second through hole and sleeved on the pin body 411. The two ends of the spring 412 abut against the protrusion ring and the end face of the second through hole near the third through hole, so that the spring 412 is pressed in the second through hole and has elastic potential energy, thereby providing a downward thrust to the pin body 411. When the pin body 411 rotates to above the second waist-shaped hole, the pin body 411 is ejected from the first waist-shaped hole under the action of the spring 412 and falls into the second waist-shaped hole.
[0044] Optionally, the fork connecting end 11 includes two connecting plates, which are respectively perpendicularly connected to the fork linkage end 2.
[0045] Specifically, the fork connecting end 11 includes two connecting plates, which are perpendicularly connected to the fork linkage end 2, and the two connecting plates are parallel.
[0046] Optionally, the end of the rotating shaft 3 near the first linkage plate 121 is provided with an external thread and a corresponding nut.
[0047] Specifically, the end of the rotating shaft 3 near the first linkage plate 121 is provided with an external thread and a corresponding nut, thereby using the nut to limit the fork linkage end 12, the drive frame linkage end 22 and the linkage wheel 4 to the rotating shaft 3, preventing the nut from causing the fork linkage end 12, the drive frame linkage end 22 and the linkage wheel 4 to fall off.
[0048] Optionally, there are two pin-pulling components 41, and the two pin-pulling components 41 are symmetrically arranged in the linkage wheel 4.
[0049] Specifically, such as Figure 2 , Figure 4 and Figure 6 As shown, there can be two pin-pulling assemblies 41, which are symmetrically arranged in the linkage wheel 4 to distribute the force evenly. It should be understood that when there are two pin-pulling assemblies 41, there should also be two corresponding structures, such as a spring 412, a second through hole, a third through hole, a first oblong hole, and a second oblong hole.
[0050] Optionally, both the fork connecting end 11 and the drive frame connecting end 21 are provided with bolt holes.
[0051] Specifically, both the fork connecting end 11 and the drive frame connecting end 21 are provided with bolt holes, and the fork connecting end 11 and the drive frame connecting end 21 are bolted to the celestial structure through the bolt holes.
[0052] An embodiment of the present invention provides a spacecraft including the decoupling mechanism described above.
[0053] The beneficial effects of the spacecraft in this embodiment compared to the prior art are the same as those of the decoupling mechanism described above, and will not be repeated here.
[0054] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.
Claims
1. A decoupling mechanism, characterized in that, The fork (1), the driving frame (2), the rotating shaft (3) and the linkage wheel (4) are connected, the fork connecting end (11) of the fork (1) and the driving frame connecting end (21) of the driving frame (2) are used for connecting two different star structures respectively, the linkage wheel (4) is used for connecting linkage ropes, the fork linkage end (12) of the fork (1), the driving frame linkage end (22) of the driving frame (2) and the linkage wheel (4) are rotationally connected through the rotating shaft (3), a joint bearing (42) is arranged at the connection between the driving frame linkage end (22) and the rotating shaft (3), a pin pulling assembly (41) is arranged in the linkage wheel (4), the pin pulling assembly (41) is used for being connected with the driving frame (2) when the fork (1) and the driving frame (2) are in a folded state, and being connected with the fork (1) when the driving frame (2) rotates around the rotating shaft (3) to an unfolded state, wherein the folded state and the unfolded state are relative positions of the fork (1) and the driving frame (2).
2. The decoupling mechanism of claim 1, wherein, The fork linkage end (12) comprises a first linkage plate (121) and a second linkage plate (122), the first linkage plate (121) and the second linkage plate (122) are arranged on the fork connecting end (11) in a spaced manner, the linkage wheel (4) is arranged between the first linkage plate (121) and the second linkage plate (122), the driving frame linkage end (22) is arranged between the first linkage plate (121) and the linkage wheel (4), a first through hole is arranged at a position corresponding to an end of the first linkage plate (121) away from the fork connecting end (11), the driving frame linkage end (22), the linkage wheel (4) and an end of the second linkage plate (122) away from the fork connecting end (11), and the rotating shaft (3) sequentially passes through the first through holes.
3. The decoupling mechanism of claim 2, wherein, A groove is arranged at an end of the second linkage plate (122) close to the fork connecting end (11), and at least a part of the driving frame connecting end (21) is arranged in the groove in the folded state.
4. The decoupling mechanism of claim 2, wherein, The pin pulling assembly (41) comprises a pin body (411) and a spring (412), a first waist-shaped hole is arranged in the driving frame linkage end (22), a second waist-shaped hole is arranged in the second linkage plate (122), the pin body (411) is slidably arranged in the linkage wheel (4) along a direction in which the first linkage plate (121) and the second linkage plate (122) are arranged in a spaced manner, the spring (412) is arranged between the pin body (411) and the linkage wheel (4), the pin body (411) is used for being connected with the first waist-shaped hole in the folded state, and being abutted against a side surface of the second linkage plate (122) away from the first linkage plate (121) under the action of the spring (412), and the pin body (411) is connected with the second waist-shaped hole under the action of the spring (412) in the unfolded state.
5. The decoupling mechanism of claim 4, wherein, The linkage wheel (4) is internally provided with a second through hole and a third through hole in communication, the aperture of the second through hole is larger than the aperture of the third through hole, the outer surface of the pin body (411) is peripherally provided with a convex ring, the outer diameter of the convex ring is adapted to the aperture of the second through hole, the pin body (411) sequentially passes through the second through hole and the third through hole, and is clamped with the first waist-shaped hole, the spring (412) is accommodated in the second through hole and is sleeved on the pin body (411), and the two ends of the spring (412) respectively abut against the convex ring and the end face of the second through hole close to the third through hole.
6. The decoupling mechanism of claim 1, wherein, The fork connecting end (11) comprises two connecting plates, and the two connecting plates are respectively connected with the fork linkage end (12) perpendicularly.
7. The decoupling mechanism of claim 2, wherein, The rotating shaft (3) is provided with an external thread and a corresponding nut cap at one end close to the first linkage plate (121).
8. The decoupling mechanism of claim 1, wherein, The number of the pin assemblies (41) is two, and the two pin assemblies (41) are symmetrically arranged in the linkage wheel (4).
9. The decoupling mechanism of claim 1, wherein, The fork connecting end (11) and the driving frame connecting end (21) are both provided with bolt holes.
10. A spacecraft, characterized by, Use of a decoupling mechanism as claimed in any of claims 1-9.