Antenna deployable mechanism, antenna device, and base station

Abstract

Embodiments of the present application provide an antenna deployable mechanism, an antenna device, and a base station. The antenna deployable mechanism includes a driving member, a first deployment assembly, and a second deployment assembly. The first deployment assembly includes a first transmission shaft and a first gear set. The second deployment assembly includes a second transmission shaft, a first bevel gear, a second bevel gear, a third transmission shaft, a fourth transmission shaft, and a second gear set. When the first gear set is in a first meshing state, the second gear set is in a second disengaged state. When the first gear set is in a first disengaged state, the second gear set is in a second meshing state. Through the present application, the problem in the related art that the antenna deployable mechanism cannot simultaneously meet the requirements of a large folding ratio during retraction and a simple structure is solved. Furthermore, the advantages of having a large folding ratio during retraction, high precision, and a simple structure are achieved. In addition, there are also advantages of smooth deployment, small deployment impact, and high deployment stiffness.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of communications, and more specifically, to an antenna deployable mechanism, an antenna device, and a base station. Background Art

[0002] Antenna devices are widely used in various fields, such as subways, railways, ships, airplanes, satellites, etc. Among them, for low-orbit satellites to meet the satellite-ground communication requirements, a large gain is required within its scanning range. A large-scale array phased array antenna must be used. At the same time, limited by the size of the effective payload bay of the existing launch vehicle, the large-scale array phased array antenna needs to be folded to the required size, retracted into the payload bay during the launch phase, and after entering the orbit, it must be deployed to the predetermined working position through a deployable mechanism and form a structure with a certain stiffness to meet the accuracy and stiffness requirements of the antenna.

[0003] In the related art, the antenna deployable mechanism includes a link-type deployable mechanism. The link-type deployable mechanism is mainly composed of links and kinematic pairs. Such a mechanism has the advantage of a large retraction and folding ratio, but has the problem of a relatively complex structure.

[0004] Therefore, the antenna deployable mechanism in the related art has the problem that it cannot simultaneously meet the requirements of a large retraction and folding ratio and a simple structure. Summary of the Invention

[0005] The embodiments of the present application provide an antenna deployable mechanism, an antenna device, and a base station to at least solve the problem that the antenna deployable mechanism in the related art cannot simultaneously meet the requirements of a large retraction and folding ratio and a simple structure.

[0006] According to an embodiment of the present application, an antenna deployable mechanism is provided, including: a driving member capable of being connected to a first antenna unit; a first deployment assembly including a first transmission shaft and a first gear set, the first transmission shaft being capable of being connected to a second antenna unit, the first gear set having a first engaged state in which the driving member is drivingly connected to the first transmission shaft and a first disengaged state in which the driving member is disconnected from the first transmission shaft; a second deployment assembly including a second transmission shaft, a first bevel gear, a second bevel gear, a third transmission shaft, a fourth transmission shaft, and a second gear set, the driving member being drivingly connected to the second transmission shaft, the first bevel gear being coaxially disposed on the second transmission shaft, the second bevel gear being coaxially disposed on the third transmission shaft and meshing with the first bevel gear, the fourth transmission shaft being capable of being connected to a third antenna unit, the second gear set having a second engaged state in which the third transmission shaft is drivingly connected to the fourth transmission shaft and a second disengaged state in which the third transmission shaft is disconnected from the fourth transmission shaft; wherein, when the first gear set is in the first engaged state, the second gear set is in the second disengaged state, and when the first gear set is in the first disengaged state, the second gear set is in the second engaged state.

[0007] According to another embodiment of the present application, an antenna device is provided, including: a plurality of antenna units; an antenna deployable mechanism, and the plurality of antenna units are deployed or folded relative to each other through the antenna deployable mechanism, and the antenna deployable mechanism is the antenna deployable mechanism provided above.

[0008] According to still another embodiment of the present application, a base station is provided, and the base station includes an antenna device, and the antenna device is the antenna device provided above.

[0009] In the transmitting stage, through the present application, the plurality of antenna units of the antenna device are retracted into the payload compartment through the antenna deployable mechanism. After entering the orbit, the plurality of antenna units of the antenna device are deployed through the antenna deployable mechanism. On the one hand, the driving member can drive the first transmission shaft to rotate. Since the first transmission shaft is connected to the second antenna unit, when the first transmission shaft rotates, it will drive the second antenna unit to swing relative to the first antenna unit and then deploy. On the other hand, the driving member can drive the fourth transmission shaft to rotate. Since the fourth transmission shaft is connected to the third antenna unit, when the fourth transmission shaft rotates, it will drive the third antenna unit to swing relative to the second antenna unit and then deploy, thereby realizing the switching of the antenna device from the retracted state to the deployed state. Among them, when the first gear set is in the first engaged state, the second gear set is in the second separated state, and when the first gear set is in the first separated state, the second gear set is in the second engaged state, so that the second antenna unit and the third antenna unit will not interfere when deployed. And, since the driving member drives the first transmission shaft to rotate through the first gear set, and the driving member drives the fourth transmission shaft to rotate through the first bevel gear, the second bevel gear, the third transmission shaft, and the second gear set, and the transmission link adopts the gear transmission method. Compared with the link-type deployable mechanism in the related art, the present application has the advantages of a large retraction and folding ratio, high precision, and at the same time has the advantage of a simple structure. Therefore, the problem that the antenna deployable mechanism in the related art cannot simultaneously meet the requirements of a large retraction and folding ratio and a simple structure can be solved. Description of the Drawings

[0010] Figure 1 is a schematic structural diagram of the antenna device according to an embodiment of the present application;

[0011] Figure 2 is a partial enlarged view of the antenna deployable mechanism according to an embodiment of the present application;

[0012] Figure 3 is a schematic structural diagram of the antenna deployable mechanism according to Embodiment 1 of the present application;

[0013] Figure 4(a) is a schematic diagram of the deployment process of the antenna deployable mechanism applied to the antenna device according to Embodiment 1 of the present application;

[0014] FIG. 4(b) is a schematic diagram of the unfolding process of the antenna deployable mechanism according to Embodiment 1 of the present application applied to an antenna device;

[0015] FIG. 4(c) is a schematic diagram of the unfolding process of the antenna deployable mechanism according to Embodiment 1 of the present application applied to an antenna device;

[0016] FIG. 4(d) is a schematic diagram of the unfolding process of the antenna deployable mechanism according to Embodiment 1 of the present application applied to an antenna device;

[0017] Figure 5 is a schematic diagram of the structure of the antenna deployable mechanism according to Embodiment 2 of the present application;

[0018] FIG. 6(a) is a schematic diagram of the unfolding process of the antenna deployable mechanism according to Embodiment 2 of the present application applied to an antenna device;

[0019] FIG. 6(b) is a schematic diagram of the unfolding process of the antenna deployable mechanism according to Embodiment 2 of the present application applied to an antenna device;

[0020] FIG. 6(c) is a schematic diagram of the unfolding process of the antenna deployable mechanism according to Embodiment 2 of the present application applied to an antenna device;

[0021] FIG. 6(d) is a schematic diagram of the unfolding process of the antenna deployable mechanism according to Embodiment 2 of the present application applied to an antenna device;

[0022] Figure 7 is a schematic diagram of the structure of the antenna deployable mechanism according to Embodiment 3 of the present application;

[0023] FIG. 8(a) is a schematic diagram of the unfolding process of the antenna deployable mechanism according to Embodiment 3 of the present application applied to an antenna device;

[0024] FIG. 8(b) is a schematic diagram of the unfolding process of the antenna deployable mechanism according to Embodiment 3 of the present application applied to an antenna device;

[0025] FIG. 8(c) is a schematic diagram of the unfolding process of the antenna deployable mechanism according to Embodiment 3 of the present application applied to an antenna device;

[0026] FIG. 8(d) is a schematic diagram of the unfolding process of the antenna deployable mechanism according to Embodiment 3 of the present application applied to an antenna device;

[0027] Figure 9 is a schematic diagram of the antenna device according to the embodiment of the present application being extended into a larger range of deployment arrays. Detailed implementation manners

[0028] In the following, embodiments of the present application will be described in detail with reference to the accompanying drawings and in conjunction with the embodiments.

[0029] It should be noted that the terms "first", "second", etc. in the description, claims and the above-mentioned drawings of the present application are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence.

[0030] As Figures 1 to 4(d) shown, Embodiment 1 of the present application provides an antenna deployable mechanism, which includes a driving member 20, a first deployment assembly 32 and a second deployment assembly 33. The driving member 20 can be connected to the first antenna unit 11. The first deployment assembly 32 includes a first transmission shaft 322 and a first gear set 324. The first transmission shaft 322 can be connected to the second antenna unit 12, so that the second antenna unit 12 is connected to the first transmission shaft 322. The first gear set 324 has a first engaged state in which the driving member 20 is drivingly connected to the first transmission shaft 322 and a first disengaged state in which the driving member 20 is disconnected from the first transmission shaft 322. The second deployment assembly 33 includes a second transmission shaft 331, a first bevel gear 332, a second bevel gear 334, a third transmission shaft 335, a fourth transmission shaft 338 and a second gear set 339. The driving member 20 is drivingly connected to the second transmission shaft 331. The first bevel gear 332 is coaxially arranged on the second transmission shaft 331. The second bevel gear 334 is coaxially arranged on the third transmission shaft 335 and meshes with the first bevel gear 332. The fourth transmission shaft 338 can be connected to the third antenna unit 13, so that the third antenna unit 13 is connected to the fourth transmission shaft 338. The second gear set 339 has a second engaged state in which the third transmission shaft 335 is drivingly connected to the fourth transmission shaft 338 and a second disengaged state in which the third transmission shaft 335 is disconnected from the fourth transmission shaft 338. Among them, when the first gear set 324 is in the first engaged state, the second gear set 339 is in the second disengaged state, and when the first gear set 324 is in the first disengaged state, the second gear set 339 is in the second engaged state.

[0031] Applying the antenna deployable mechanism provided in this embodiment, during the launch phase, multiple antenna units of the antenna device are retracted into the payload bay through the antenna deployable mechanism. After entering the orbit, multiple antenna units of the antenna device are deployed through the antenna deployable mechanism. Among them, the multiple antenna units include a first antenna unit 11, a second antenna unit 12 and a third antenna unit 13. The second antenna unit 12 is located on one side of the first antenna unit 11, and the second antenna unit 12 can swing relative to the first antenna unit 11. The third antenna unit 13 is located on one side of the second antenna unit 12, and the third antenna unit 13 can swing relative to the second antenna unit 12. When the antenna device is deployed, the first antenna unit 11 serves as a relatively stationary antenna unit, and the second antenna unit 12 and the third antenna unit 13 swing relative to the first antenna unit 11, thereby realizing the deployment of multiple antenna units of the antenna device.

[0032] On the one hand, the driving member 20 can drive the first transmission shaft 322 to rotate. Since the first transmission shaft 322 is connected to the second antenna unit 12, when the first transmission shaft 322 rotates, it will drive the second antenna unit 12 to swing relative to the first antenna unit 11 and thus unfold. On the other hand, the driving member 20 can drive the fourth transmission shaft 338 to rotate. Since the fourth transmission shaft 338 is connected to the third antenna unit 13, when the fourth transmission shaft 338 rotates, it will drive the third antenna unit 13 to swing relative to the second antenna unit 12 and thus unfold, thereby realizing the switching of the antenna device from the retracted state to the unfolded state. Among them, when the first gear set 324 is in the first meshing state, the second gear set 339 is in the second disengaged state, and when the first gear set 324 is in the first disengaged state, the second gear set 339 is in the second meshing state, so that the second antenna unit 12 and the third antenna unit 13 will not interfere with each other when unfolding.

[0033] Moreover, since the driving member 20 drives the first transmission shaft 322 to rotate through the first gear set 324, and the driving member 20 drives the fourth transmission shaft 338 to rotate through the first bevel gear 332, the second bevel gear 334, the third transmission shaft 335, and the second gear set 339, and the transmission link 60 adopts the gear transmission method. Compared with the link-type deployable mechanism in the related art, the present application has the advantages of a large retraction and folding ratio, high precision, and a simple structure. Therefore, the problem that the antenna deployable mechanism in the related art cannot simultaneously meet the requirements of a large retraction and folding ratio and a simple structure can be solved.

[0034] Moreover, adopting the gear transmission method also has the advantages of smooth deployment, small deployment impact, and high deployment stiffness.

[0035] Among them, the deployment and folding of the antenna device can be realized by the forward drive and reverse drive of the driving member 20.

[0036] It should be noted that when multiple antenna units of the antenna device are deployed through the antenna deployable mechanism, the second antenna unit 12 can be deployed first, and then the third antenna unit 13 can be deployed. Or the third antenna unit 13 can be deployed first, and then the second antenna unit 12 can be deployed.

[0037] In this embodiment, the driving connection between A and B means that A can drive B to move / rotate. For example, the driving member 20 is drivingly connected to the second transmission shaft 331, which means that the driving member 20 can drive the second transmission shaft 331 to rotate around the axis of the second transmission shaft 331.

[0038] Moreover, using one driving member 20 to be able to drive the second antenna unit 12 and the third antenna unit 13 to unfold respectively can simplify the driving structure.

[0039] Such as Figure 2 andFigure 3 As shown, the first gear set 324 includes a first non-complete gear 321 and a first spur gear 323. The first non-complete gear 321 is coaxially arranged on the second transmission shaft 331, and the first spur gear 323 is coaxially arranged on the first transmission shaft 322. When the first gear set 324 is in the first engaged state, the first non-complete gear 321 meshes with the first spur gear 323. When the first gear set 324 is in the first separated state, the first non-complete gear 321 is separated from the first spur gear 323. By matching the first non-complete gear 321 and the first spur gear 323, the first gear set 324 is switched between the first engaged state and the first separated state, which has the advantages of simple transmission structure and high reliability.

[0040] It should be noted that a non-complete gear is also called an incomplete gear or a non-circular gear, which is a special gear mechanism. Its characteristic is that the teeth on the gear are not a complete circle but only partial teeth. This design enables the gear to achieve specific motion requirements during operation, such as the intermittent motion in this embodiment.

[0041] As Figure 3 shown, the second gear set 339 includes a second non-complete gear 336 and a second spur gear 337. The second non-complete gear 336 is coaxially arranged on the third transmission shaft 335, and the second spur gear 337 is coaxially arranged on the fourth transmission shaft 338. When the second gear set 339 is in the second engaged state, the second non-complete gear 336 meshes with the second spur gear 337. When the second gear set 339 is in the second separated state, the second non-complete gear 336 is separated from the second spur gear 337. Similarly, by matching the second non-complete gear 336 and the second spur gear 337, the second gear set 339 is switched between the second engaged state and the second separated state, which has the advantages of simple transmission structure and high reliability.

[0042] Moreover, by adopting the method of matching a non-complete gear and a spur gear, the accuracy of the antenna unit's deployment and folding is further improved, which is applicable to scenarios with high requirements for antenna pointing accuracy, such as low-orbit satellite communication with the ground.

[0043] In other embodiments, if a non-complete gear is not used, the engagement or separation of two gears can be achieved by adding a clutch structure.

[0044] As Figure 2As shown in the figure, the driving member 20 includes a motor 21, a worm 22, and a worm gear 23. The motor 21 can be connected to the first antenna unit 11. The worm 22 is coaxially arranged on the motor shaft of the motor 21, and the worm gear 23 is coaxially arranged on the second transmission shaft 331. The worm gear 23 meshes with the worm 22. Among them, the first antenna unit 11 is connected to the outer shell of the motor 21. The motor 21 drives the second transmission shaft 331 to rotate through the worm 22 and the worm gear 23, and self-locking can be achieved. After the antenna device is deployed, the antenna device can be maintained in the deployed state.

[0045] As Figures 1 to 3 shown in the figure, the antenna deployable mechanism includes a plurality of first deployment components 32. The first antenna unit 11 is a polygonal structure. The plurality of first deployment components 32 are arranged in one-to-one correspondence with the plurality of side edges of the first antenna unit 11, and the corresponding first transmission shafts 322 are parallel to the side edges of the first antenna unit 11. With the above structure, a second antenna unit 12 is connected to each of the plurality of side edges of the first antenna unit 11, and each second antenna unit 12 is deployed through a first deployment component 32, so that the antenna device has a sufficiently large deployment area.

[0046] As Figures 1 to 3 shown in the figure, the second deployment component 33 includes a plurality of second transmission shafts 331. The plurality of second transmission shafts 331 are arranged in one-to-one correspondence with the first transmission shafts 322 of the plurality of first deployment components 32. A first bevel gear 332 is provided at both ends of each second transmission shaft 331, and adjacent first bevel gears 332 mesh with each other. The driving member 20 can be drivingly connected or disconnected from the first transmission shaft 322 through the cooperation of the second transmission shaft 331 and the first gear set 324. With the above structure, the linkage of the plurality of second transmission shafts 331 can be realized, the transmission structure is simplified, and the synchronism of the transmission motion is improved.

[0047] Moreover, since the driving member 20 can be drivingly connected or disconnected from the first transmission shaft 322 through the cooperation of the second transmission shaft 331 and the first gear set 324, one driving member 20 can be used to drive the second antenna unit 12 and the third antenna unit 13 to deploy respectively, and the driving structure can be simplified.

[0048] Specifically, the second deployment component 33 includes multiple groups of deployment units 40. The multiple groups of deployment units 40 are arranged at the multiple corners of the first antenna unit 11 in one-to-one correspondence. Each group of deployment units 40 includes a second bevel gear 334, a third transmission shaft 335, a fourth transmission shaft 338, and a second gear set 339. With the above structure, the synchronous deployment and folding of the multiple third antenna units 13 can be realized. On the one hand, the efficiency of deployment and folding can be improved, and on the other hand, the deployment area of the antenna device can be increased.

[0049] In this embodiment, a set of deployment units 40 are provided at both ends of the second transmission shaft 331. Each set of deployment units 40 includes a second bevel gear 334, a third transmission shaft 335, a fourth transmission shaft 338, and a second gear set 339. Among them, the axes of the two sets of deployment units 40 are parallel to each other. In this embodiment, first, the third antenna unit 13 is deployed, and then the second antenna unit 12 is deployed.

[0050] To facilitate the understanding of the antenna deployable mechanism provided in this embodiment, the following will be explained in combination with the specific deployment process:

[0051] As Figure 1 shown, the antenna device includes 9 antenna units, and the deployed state is arranged in a 9-grid pattern.

[0052] In the initial folded state as shown in Fig. 4(a), the motor 21 rotates clockwise, driving the worm 22, the worm gear 23, the second transmission shaft 331, the first bevel gear 332, the second bevel gear 334, the third transmission shaft 335, the second non-full gear 336, and the second spur gear 337, driving the third antenna unit 13 to rotate and deploy around the fourth transmission shaft 338; at the same time, as shown in Fig. 4(b), the rotation of the second transmission shaft 331 will drive the first bevel gear 332 at the other end of the second transmission shaft 331 to rotate. The first bevel gears 332 cooperate with each other to rotate between adjacent second transmission shafts 331 to achieve linkage, so that the third antenna units 13 at the four corners of the 9-grid are finally deployed in one dimension as shown in Fig. 4(c). The motor 21 continues to rotate, driving the second transmission shaft 331, the first non-full gear 321, the first transmission shaft 322, and the first spur gear 323, thereby realizing the rotation and deployment of the second antenna unit 12; so that the four second antenna units 12 surrounding the first antenna unit 11 are synchronously rotated and deployed under the transmission of the bevel gear pair, and finally two-dimensional deployment is achieved as shown in Fig. 4(d).

[0053] As Figure 9 shown, the present application can be extended into a larger-scale deployment array.

[0054] As Figure 5 and Fig. 6(d) shown, Embodiment 2 of the present application provides an antenna deployable mechanism. The difference between Embodiment 2 and Embodiment 1 is that in Embodiment 2, the transmission link 60 changes, so as to achieve different deployment logics.

[0055] In the second embodiment, a set of deployment units 40 are provided at both ends of the second transmission shaft 331. Each set of deployment units 40 includes a second bevel gear 334, a third transmission shaft 335, a fourth transmission shaft 338, and a second gear set 339. One of the second gear sets 339 further includes a reversing gear 50, and the second non-full gear 336 meshes with the second straight gear 337 through the reversing gear 50. With the above structure, the deployment directions of the two third antenna units 13 located on both sides of the same second antenna unit 12 of the antenna device are the same, thus realizing different deployment logics.

[0056] As Figure 7 Shown in FIGS. 8(c) and 8(d), Embodiment 3 of the present application provides an antenna deployable mechanism. The difference between Embodiment 3 and Embodiment 1 is that in Embodiment 3, the transmission link 60 changes, thereby realizing different deployment logics.

[0057] In Embodiment 3, a set of deployment units 40 are provided at both ends of the second transmission shaft 331. Each set of deployment units 40 includes a second bevel gear 334, a third transmission shaft 335, a fourth transmission shaft 338, and a second gear set 339. Among them, the axes of the two sets of deployment units 40 are perpendicular to each other. In Embodiment 3, first deploy the second antenna unit 12, and then deploy the third antenna unit 13.

[0058] Embodiment 4 of the present application provides an antenna device. The antenna device includes a plurality of antenna units and an antenna deployable mechanism. The plurality of antenna units are deployed or folded with each other through the antenna deployable mechanism, and the antenna deployable mechanism is the antenna deployable mechanism provided above. Therefore, the antenna device of this embodiment also has the advantages of a large folding ratio during retraction, high precision, and a simple structure.

[0059] Among them, the antenna device includes a spaceborne phased array antenna.

[0060] Embodiment 5 of the present application provides a base station. The base station includes an antenna device 70, and the antenna device is the antenna device provided above. Therefore, the antenna device of this base station also has the advantages of a large folding ratio during retraction, high precision, and a simple structure.

[0061] Through the device provided in this embodiment, the following beneficial effects are achieved:

[0062] (1) The device provided in this embodiment uses a new gear train transmission to achieve two-dimensional deployment, and can simultaneously achieve deployment and folding: The overall antenna deployable mechanism uses a gear train transmission, and realizes two-dimensional time-sharing deployment through the drive of one motor and non-full gears; the drive train can be driven forward and backward by the motor to achieve deployment and folding; the transmission link contains a worm gear (helical gear) and a worm to achieve self-locking.

[0063] (2) The device provided in this embodiment has the advantages of smooth deployment, small deployment impact, and high deployment stiffness: The deployable mechanism of this antenna is driven by a motor, and the transmission link uses gears. Compared with the link-type deployable mechanism, it has the advantages of smooth deployment, small deployment impact, and high deployment stiffness.

[0064] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0065] In the description of the present application, it should be understood that the orientation or positional relationship indicated by orientation words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the protection scope of the present application; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0066] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Without otherwise stating, these words have no special meaning. Therefore, it cannot be understood as a limitation on the protection scope of the present application.

[0067] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the principle of the present application shall be included in the protection scope of the present application.

Claims

1. An antenna deployable mechanism, characterized in that: include: A driving member (20) capable of being connected to the first antenna unit (11); A first deployment component (32) comprises a first transmission shaft (322) and a first gear set (324), wherein the first transmission shaft (322) is connectable to the second antenna unit (12), and the first gear set (324) has a first meshing state that enables the driving member (20) to be drivingly connected to the first transmission shaft (322) and a first disengaging state that enables the driving member (20) to be disconnected from the first transmission shaft (322); A second deployment component (33), comprising a second transmission shaft (331), a first bevel gear (332), a second bevel gear (334), a third transmission shaft (335), a fourth transmission shaft (338) and a second gear set (339), wherein the driving member (20) is drivingly connected to the second transmission shaft (331), the first bevel gear (332) is coaxially arranged on the second transmission shaft (331), the second bevel gear (334) is coaxially arranged on the third transmission shaft (335) and meshes with the first bevel gear (332), the fourth transmission shaft (338) is connectable to the third antenna unit (13), and the second gear set (339) has a second meshing state in which the third transmission shaft (335) is drivingly connected to the fourth transmission shaft (338) and a second disengaging state in which the third transmission shaft (335) is disconnected from the fourth transmission shaft (338); Wherein, when the first gear set (324) is in the first meshing state, the second gear set (339) is in the second disengaged state; when the first gear set (324) is in the first disengaged state, the second gear set (339) is in the second meshing state.

2. The antenna deployable mechanism according to claim 1, characterized in that: The first gear set (324) includes: A first non-full gear (321) coaxially arranged on the second transmission shaft (331); A first spur gear (323) is coaxially arranged on the first transmission shaft (322); when the first gear set (324) is in the first meshing state, the first non-full gear (321) is meshed with the first spur gear (323); when the first gear set (324) is in the first disengaged state, the first non-full gear (321) is disengaged from the first spur gear (323).

3. The antenna deployable mechanism according to claim 1, characterized in that: The second gear set (339) comprises: A second non-full gear (336) coaxially arranged on the third transmission shaft (335); The second spur gear (337) is coaxially arranged on the fourth transmission shaft (338); when the second gear set (339) is in the second meshing state, the second non-full gear (336) is meshed with the second spur gear (337); when the second gear set (339) is in the second disengaged state, the second non-full gear (336) is disengaged from the second spur gear (337).

4. The antenna deployable mechanism according to claim 1, characterized in that: The driving member (20) comprises: A motor (21), wherein the motor (21) is connectable to the first antenna unit (11); A worm (22) coaxially arranged on the motor shaft of the motor (21); A worm wheel (23) is coaxially arranged on the second transmission shaft (331), and the worm wheel (23) is meshed with the worm (22).

5. The antenna deployable mechanism according to any one of claims 1 to 4, characterized in that: The antenna deployable mechanism comprises a plurality of the first deployable components (32), the first antenna unit (11) is a polygonal structure, the plurality of the first deployable components (32) are arranged in one-to-one correspondence with a plurality of side edges of the first antenna unit (11), and the corresponding first transmission shaft (322) is parallel to the side edge of the first antenna unit (11).

6. The antenna deployable mechanism according to claim 5, characterized in that: The second unfolding component (33) comprises a plurality of second transmission shafts (331), and the plurality of second transmission shafts (331) are arranged in a one-to-one correspondence with the plurality of first transmission shafts (322) of the first unfolding components (32). A first bevel gear (332) is arranged at both ends of each second transmission shaft (331), and two adjacent first bevel gears (332) are meshed with each other. The driving member (20) can be driven to be connected or disconnected with the first transmission shaft (322) by cooperating with the second transmission shaft (331) and the first gear set (324).

7. The antenna deployable mechanism according to claim 5, characterized in that: The second deployment component (33) comprises a plurality of deployment units (40), the plurality of deployment units (40) being arranged in a one-to-one correspondence at a plurality of corners of the first antenna unit (11), and each of the deployment units (40) comprising a second bevel gear (334), a third transmission shaft (335), a fourth transmission shaft (338), and a second gear set (339).

8. The antenna deployable mechanism according to claim 3, characterized in that: A group of unfolding units (40) is provided at both ends of the second transmission shaft (331), and each group of the unfolding units (40) comprises a second bevel gear (334), a third transmission shaft (335), a fourth transmission shaft (338), and a second gear set (339); One of the second gear sets (339) further includes a reversing gear (50), and the second non-full gear (336) is meshed with the second spur gear (337) via the reversing gear (50).

9. The antenna deployable mechanism according to any one of claims 1 to 4, characterized in that: A group of unfolding units (40) is provided at both ends of the second transmission shaft (331), and each group of the unfolding units (40) comprises a second bevel gear (334), a third transmission shaft (335), a fourth transmission shaft (338), and a second gear set (339); The axes of the two groups of unfolding units (40) are parallel to each other, or the axes of the two groups of unfolding units (40) are perpendicular to each other.

10. An antenna device, characterized in that: include: multiple antenna elements; An antenna deployable mechanism, through which multiple antenna units are deployed or folded relative to each other, and the antenna deployable mechanism is the antenna deployable mechanism according to any one of claims 1 to 9.

11. A base station, characterized in that: The base station comprises an antenna device (70), and the antenna device is the antenna device according to claim 10.

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