A base station antenna

Abstract

This utility model relates to a base station antenna, which includes: an antenna assembly comprising a barrel-shaped housing, a radiating component, and an azimuth adjustment device disposed within the barrel-shaped housing; a mast on which the antenna assembly is mounted; and a pitch adjustment device disposed between the antenna assembly and the mast. The antenna assembly includes: a drive assembly having a first power output shaft and a second power output shaft; and a shifting assembly configured to shift gears based on the power output from the first power output shaft, thereby determining whether the second power output shaft drives the azimuth adjustment device or the pitch adjustment device.

Description

Technical Field

[0001] This utility model relates to the technical field of wireless communication, and more specifically to a base station antenna. Background Technology

[0002] In mobile communication systems, base station antennas are the core components for signal transmission, completing information exchange through the transmission and reception of electromagnetic waves. Structurally, a base station antenna consists of two parts: a protective outer shell and internal functional components. Internally, it integrates core units such as a reflector, a radiating element array, a phase-shifting control module, and a feeding system. The reflector, as the basic structure for electromagnetic wave directionality, works in conjunction with the radiating elements to achieve efficient electromagnetic wave radiation; the phase shifter and feeding network are responsible for signal phase adjustment and energy distribution. By precisely adjusting the antenna's horizontal azimuth and vertical elevation angles, the electromagnetic beam pointing can be optimized, thereby precisely controlling the signal strength distribution within the network coverage area and in different regions.

[0003] Currently, base station antennas typically have two independent adjustment devices for azimuth and elevation, each with its own drive motor. This results in increased cost and weight for the equipment. The adjustment devices are usually externally mounted on the surface of the radome or the lower end cover area, which not only affects the overall aesthetics of the antenna but also significantly increases the size of the equipment, complicating the installation process and making maintenance inconvenient. Utility Model Content

[0004] The purpose of this utility model is to solve at least one of the above-mentioned problems and defects in the prior art. That is, the embodiments of this utility model adopt a built-in azimuth angle adjustment device to integrate the core components inside the antenna and provide a clutch component, which effectively optimizes space utilization, improves product reliability, and by combining a shift component, a single drive component can alternately control the azimuth angle and elevation angle adjustment, effectively reducing material costs and overall weight, while simplifying the installation process.

[0005] To address the above problems, the first aspect of this utility model provides a base station antenna, the base station antenna comprising: An antenna assembly, comprising a barrel-shaped housing, a radiating component, and an azimuth adjustment device disposed within the barrel-shaped housing; A mast, on which the antenna assembly is mounted; A pitch angle adjustment device is disposed between the antenna assembly and the mast, wherein the antenna assembly includes: The drive assembly has a first power output shaft and a second power output shaft; A shifting assembly configured to shift gears based on the power output from the first power output shaft, thereby determining whether the second power output shaft drives the azimuth adjustment device or the pitch adjustment device.

[0006] In the base station antenna according to this utility model, the azimuth adjustment device and the elevation adjustment device share a single drive assembly by means of a shifting component, thereby reducing the cost of the base station antenna according to this utility model while fully satisfying its control functions. Furthermore, the azimuth adjustment device of the base station antenna according to this utility model is built into a cylindrical housing, which is not only aesthetically pleasing but also contributes to the stability of antenna performance.

[0007] In one exemplary embodiment of the present invention, the drive assembly is disposed at one end of the barrel-shaped housing. This satisfies the drive requirements of the antenna assembly and the elevation adjustment device, while also facilitating maintenance and repair.

[0008] In an exemplary embodiment of the present invention, the drive assembly further includes a third power output shaft configured to connect to the phase shifter of the base station antenna to drive the phase shifter. In this way, not only do the azimuth and elevation adjustment devices of the antenna share a single drive assembly, but the phase shifter of the base station antenna can also use this drive assembly, thereby further simplifying the structure of the base station antenna according to the present invention.

[0009] In an exemplary embodiment of the present invention, the azimuth adjustment device includes a drive gear, the axis of which overlaps with the axis of the barrel-shaped housing, and wherein the drive gear is configured to selectively engage the shifting assembly. In this manner, the reflector assembly of the base station antenna can be rotated within the barrel-shaped housing by means of the drive gear to adjust the azimuth angle of the base station antenna.

[0010] In an exemplary embodiment of the present invention, the azimuth adjustment device further includes a clutch member for selectively fixing the drive gear. This allows the drive gear to be fixed when rotation is not required, and the clutch member to be disengaged when rotation is needed.

[0011] In an exemplary embodiment of the present invention, the clutch member is coupled to the shift assembly such that the clutch member prevents rotation of the drive gear in a first position, and the drive gear can rotate when the clutch member is in a second position different from the first position. This allows the drive gear to be fixed when rotation is not required, and the clutch member to be disengaged when rotation is needed.

[0012] In an exemplary embodiment of the present invention, the antenna assembly includes a reflector assembly rotatably connected to the barrel-shaped housing. This allows the reflector assembly of the base station antenna to rotate within the barrel-shaped housing via a drive gear, thereby adjusting the azimuth angle of the base station antenna.

[0013] In one exemplary embodiment of the present invention, a roller is provided near the barrel-shaped housing of the reflector assembly. This further reduces friction and improves rotational efficiency.

[0014] In one exemplary embodiment of the present invention, the barrel-shaped housing has a circular end cap, and the inner side of the circular end cap has a roller structure. This further reduces friction and improves rotational efficiency.

[0015] In an exemplary embodiment of the present invention, the pitch angle adjustment device is connected to a fixed base connected to the lever and a lead screw connected to the shift assembly.

[0016] In the base station antenna according to this utility model, the azimuth adjustment device and the elevation adjustment device share a single drive assembly by means of a shifting component, thereby reducing the cost of the base station antenna according to this utility model while fully satisfying its control functions. Furthermore, the azimuth adjustment device of the base station antenna according to this utility model is built into a cylindrical housing, which is not only aesthetically pleasing but also contributes to the stability of antenna performance. Attached Figure Description

[0017] Features, advantages, and other aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description, in which several embodiments of the disclosure are illustrated by way of example and not limitation, in the drawings: Figure 1 A schematic diagram of a base station antenna according to an embodiment of the present invention is shown; Figure 2 A schematic diagram of an antenna assembly according to an embodiment of the present invention is shown; Figures 3 to 7 A schematic diagram of an azimuth adjustment device according to an embodiment of the present invention is shown; Figures 8 to 10 A schematic diagram of a shift assembly according to an embodiment of the present invention is shown; Figures 11 to 13 A schematic diagram of a pitch angle adjustment device according to an embodiment of the present invention is shown; Figure 14 A schematic diagram of a connecting member according to an embodiment of the present invention is shown; and Figure 15 A schematic diagram of an end cap according to an embodiment of the present invention is shown. Detailed Implementation

[0018] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings. In this specification, the same or similar reference numerals indicate the same or similar components. The following description of the embodiments of this utility model with reference to the accompanying drawings is intended to explain the overall inventive concept of this utility model and should not be construed as a limitation thereof.

[0019] The terms “comprising,” “including,” and similar terms as used herein should be understood as open-ended terms, meaning “including / including but not limited to,” implying that other content may also be included. 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,” and so on.

[0020] As mentioned earlier, existing base station antennas either cannot adjust the azimuth and elevation angles simultaneously, or they have two separate adjustment devices, which is neither economical nor aesthetically pleasing.

[0021] In view of this, the inventors of this utility model innovatively conceived of and proposed a base station antenna, the base station antenna comprising: an antenna assembly, the antenna assembly including a barrel-shaped housing, a radiating assembly, and an azimuth adjustment device disposed within the barrel-shaped housing; a mast, the antenna assembly being disposed on the mast; and an elevation adjustment device, the elevation adjustment device being disposed between the antenna assembly and the mast, wherein the antenna assembly comprises: a drive assembly, the drive assembly having a first power output shaft and a second power output shaft; and a shifting assembly, the shifting assembly being configured to shift gears based on the power output by the first power output shaft, thereby determining whether the second power output shaft drives the azimuth adjustment device or the elevation adjustment device. In the base station antenna according to this utility model, by means of the shifting assembly, the azimuth adjustment device and the elevation adjustment device share a single drive assembly, thereby reducing the cost of the base station antenna according to this utility model, while fully satisfying its control functions. Furthermore, the azimuth angle adjustment device of the base station antenna according to this utility model is built into the barrel-shaped housing, which is not only aesthetically pleasing, but also plays a good role in the stability of antenna performance.

[0022] The following will be combined with the appendix Figure 1 To be continued Figure 15 This describes a base station antenna according to the present invention. Wherein, Figure 1 A schematic diagram of a base station antenna according to an embodiment of the present invention is shown. Figure 2A schematic diagram of an antenna assembly according to an embodiment of the present invention is shown. Figures 3 to 7 A schematic diagram of an azimuth adjustment device according to an embodiment of the present invention is shown. Figures 8 to 10 A schematic diagram of a shift assembly according to an embodiment of the present invention is shown. Figures 11 to 13 A schematic diagram of a pitch angle adjustment device according to an embodiment of the present invention is shown. Figure 14 A schematic diagram of a connecting member according to an embodiment of the present invention is shown, while Figure 15 A schematic diagram of an end cap according to an embodiment of the present invention is shown.

[0023] Figure 1 A schematic diagram of a base station antenna according to an embodiment of the present invention is shown. Figure 1 As can be seen from this, the novel base station antenna proposed according to an example of this utility model mainly includes an antenna assembly 100, an elevation angle adjustment device 200, and a mast 300. The elevation angle adjustment device 200 includes a transmission screw assembly 210, an upper support assembly 220, and a lower support 230.

[0024] Figure 2 A schematic diagram of an antenna assembly according to an embodiment of the present invention is shown. Figure 2 As can be seen, the antenna assembly 100 includes a reflector assembly, an azimuth adjustment device, and a drive unit 140. The reflector assembly mainly includes a reflector and other accessories. The azimuth adjustment device is fixed to the back of the reflector assembly and rotates the reflector assembly within the barrel-shaped housing through gear engagement, thereby adjusting the antenna azimuth angle; the elevation adjustment device 200 fixes the antenna assembly 100 to the mast 300.

[0025] Figures 3 to 7 A schematic diagram of an azimuth adjustment device according to an embodiment of the present invention is shown. Figures 2 to 7 As can be seen, the antenna elevation angle is adjusted by means of a lead screw and nut drive and a connecting rod to adjust the bracket posture. This novel antenna uses a shifting component 132 and a drive unit 140 to adjust the azimuth and elevation angles, and optionally implements gear locking shifting adjustment. The base station antenna disclosed in this invention can intelligently adjust the azimuth and elevation angles without requiring operators to climb the tower, improving installation and adjustment efficiency while avoiding the safety hazards associated with working at height.

[0026] Furthermore, it can be seen that the reflector assembly is rotatably connected to the barrel-shaped shell through an azimuth adjustment device. The azimuth adjustment device can drive the reflector assembly to rotate horizontally around the center of the barrel-shaped shell. After the reflector assembly is adjusted to the set angle, preferably or additionally, it can drive the locking component to lock the rotating gear, effectively improving product reliability.

[0027] The azimuth adjustment device includes a rotation locking assembly 131, a shifting assembly 132, a support plate 133, a tripod 134, a central shaft 135, a track clamp assembly 136, a universal joint, and a rotating shaft.

[0028] Figure 3 The bearing housing assembly 122 is fixedly connected to the reflector 125 via the first connector 126. One end of the tripod 134 is fixedly connected to the support plate 133. The tripod 134 has a central shaft hole, one end of which is inserted through and fixedly connected to the central shaft 135, and the other end is inserted into the bearing of the bearing housing assembly 122. The azimuth adjustment device is connected to the bearing of the bearing housing assembly 122 fixed to the reflector 125 via the central shaft 135. This provides a rotation center for the reflector assembly 120, and the bearing housing assembly 122 bears part of the axial and radial forces, effectively improving product reliability.

[0029] Reference Figure 4 and Figure 5 As shown, the track base 123 is fixed to the back of the reflector 125 via the second connector 127, and the track base 123 has a track 1231. The track clamp assembly 136 includes a ball bearing 1361 and a track clamp 1362. One end of the track clamp assembly 136 is fixed to the support plate 133 via the fourth connector 129, and the other end is tactilely connected to the track base 123 via the ball bearing 1361, which resides within the track of the track base 123. The tactile connection between the track clamp assembly 136 and the track base 123 via the ball bearing 1361 provides guidance and also bears some of the axial and radial forces, effectively improving product reliability.

[0030] Reference Figures 2 to 5As shown, one side of the first mounting plate 124 is fixedly connected to the barrel-shaped housing 110, and the other side is fixedly connected to the support plate 133. The drive gear 121 is fixed to both ends of the back of the reflector 125 through the first connector 126 and the second connector 127; the locking assembly 131 is fixed to both ends of the support plate 133, and the drive gear 121 and the drive gear 1311 of the locking assembly 131 mesh with each other. The shifting assembly 132 is fixedly connected to the support plate 133, and the third gear shaft 1326 is fixedly connected to the drive gear 1311 in the locking assemblies at both ends through a universal joint and a rotating shaft. That is, when the third gear shaft 1326 rotates, it drives the drive gears 1311 at both ends to rotate simultaneously, thereby driving the drive gear 121 to rotate, so as to realize the rotation of the reflector assembly. The fifth gear shaft 1328 is fixedly connected to the second screws 1312 in the locking assemblies 131 at both ends via a universal joint and a rotating shaft. That is, when the fifth gear shaft 1328 rotates, it drives the second screws at both ends to rotate simultaneously, thereby locking and unlocking the drive gear 1311. In summary, in an exemplary embodiment according to this utility model, the azimuth adjustment device includes a drive gear, the axis of which overlaps with the axis of the barrel-shaped housing, and the drive gear is configured to selectively engage the shifting assembly. In this way, the reflector assembly of the base station antenna can rotate inside the barrel-shaped housing by means of the drive gear to adjust the azimuth angle of the base station antenna.

[0031] The support plate 133 is fixedly connected to the barrel-shaped shell via the first mounting plate 124, meaning the azimuth adjustment device is in a fixed state. The reflector assembly is rotatably connected to the azimuth adjustment device via the central shaft 135. The reflector assembly is rotatably connected to the azimuth adjustment device via the meshing of the drive gear 121 and the drive gear 1311. The reflector assembly is rotatably connected to the azimuth adjustment device via the cooperation of the ball bearing 1361 of the track clamp assembly 136 and the track seat 123. The center of the central shaft, the instantaneous center of engagement of the drive gear 121 and the drive gear 1311, and the center of the track of the track seat 123 are all concentric with the center of the barrel-shaped shell.

[0032] Reference Figure 6 and Figure 7The rotating locking assembly 131 includes: a drive gear 1311, a second screw 1312, a paddle 1313, a clutch stop pin 1314, a reset member 1315, a housing, and a guide post; the housing includes a first housing 13161 and a second housing 13162; the paddle 1313 is threaded and engages with the second screw 1312, and the rotation of the second screw 1312 can drive the paddle 1313 to move along the axis Z. The bottom surface of the paddle 1313 is provided with a boss, and the clutch stop pin 1314 is provided with a contact surface. When the A surface of the boss abuts against the contact surface of the clutch stop pin 1314, the paddle 1313 can drive the clutch stop pin 1314 to move along the axis Z; one end of the clutch stop pin 1314 is connected to the reset member 1315. When the clutch stop pin 1314 is in the unlocked position, the composite member 1315 can be used to drive the clutch stop pin 1314 to move to the locked position.

[0033] In summary, in an exemplary embodiment of the present invention, the azimuth adjustment device further includes a clutch member for selectively fixing the drive gear. This allows the drive gear to be fixed when rotation is not required, and the clutch member to be disengaged when rotation is required. In an exemplary embodiment of the present invention, the clutch member is coupled to the shifting assembly such that the clutch member prevents rotation of the drive gear in a first position, and the drive gear can rotate when the clutch member is in a second position different from the first position. This allows the drive gear to be fixed when rotation is not required, and the clutch member to be disengaged when rotation is required. Specifically, the drive gear 1311 has several cylindrical bosses, and the clutch stop pin 1314 has two circular holes; in the locked state, the cylindrical bosses of the drive gear 1311 pass through the two circular holes of the clutch stop pin 1314, locking with the clutch stop pin 1314. In the unlocked state, the cylindrical boss of the drive gear 1311 is completely separated from the two holes of the clutch stop pin 1314. That is, when the drive gear 1311 is in the locked state, the second screw 1312 rotates, causing the paddle 1313 to move along the axis Z. When the A surface of the boss abuts against the contact surface of the clutch stop pin 1314, the clutch stop pin 1314 moves away from the drive gear 1311 along the axis Z under the action of the paddle 1313, until the cylindrical boss of the drive gear 1311 and the two holes of the clutch stop pin 1314 are completely separated, completing the unlocking action. When the second screw 1312 rotates in the reverse direction, it drives the paddle 1313 to move in the reverse direction along the Z axis. The A surface of the boss separates from the contact surface of the clutch stop pin 1314. Under the action of the composite part 1315, the clutch stop pin 1314 moves towards the drive gear 1311. The cylindrical boss of the drive gear 1311 passes through the two round holes of the clutch stop pin 1314, thus completing the locking action. By locking the clutch stop pin 1314 and the drive gear 1311, the reflector assembly 120 is locked, effectively preventing the reflector assembly 120 from shaking due to gear meshing clearance under external force.

[0034] Reference Figures 8 to 10 The shift assembly 132 includes: a first power input terminal 1321, a second power input terminal 1322, a shift assembly 1323, a first gear shaft 1324, a second gear shaft 1325, a third gear shaft 1326, a fourth gear shaft 1327, a fifth gear shaft 1328, and a second housing 1329. The shift assembly 1323 includes: a limit nut 13231, a first screw 13232, and a shift gear 13233; the second housing includes: a third outer shell 13291 and a fourth outer shell 13292.

[0035] The limiting nut 13231 has a U-shaped groove. The shift gear 13233 is installed in the middle of the U-shaped groove and passes through the first gear shaft 1324. The shift gear 13233 is circumferentially fixed and axially movable with the first gear shaft 1324, which can be achieved through a keyway and is not limited to a certain form. The other end of the limiting nut 13231 has a threaded shaft hole, which is threadedly connected to the first screw 13232. The first power input end 1321 drives the first screw 13232 to rotate, thereby causing the limiting nut 13231 to move axially on the first screw 13232 and the first gear shaft 1324, and causing the shift gear 13233 to move axially on the first gear shaft 1324. The shift gear 13233, through the axial movement of the limiting nut 13231 on the first gear shaft, meshes with different power output gear shafts, realizing the shifting function. The first gear shaft 1324 and the second gear shaft 1325 mesh with each other. The second power input end 1322 drives the second gear shaft 1325 to rotate, which in turn drives the first gear shaft to rotate, thereby driving the shift gear 13233 to rotate and realize power output. The first power input end 1321 and the second power input end 1322 are connected to the drive unit 140 through a universal joint and a rotating shaft, that is, the drive unit 140 provides the power input. It should be noted that in the actual production process, the above-mentioned gear shafts can also adopt a split structure, as long as the two are fixedly connected. This is not a limitation and is within the protection scope of this application.

[0036] The azimuth adjustment device is fixed to the back of the reflector 125 inside the radome, making full use of the space behind the reflector assembly and improving the overall aesthetics of the antenna. The application of the shifting assembly reduces the amount of material for the motor and adjustment device, effectively reducing cost and overall weight. The purely mechanical locking assembly 131 and shifting assembly 132 effectively improve the reliability of the antenna.

[0037] Reference Figures 11 to 13When the antenna azimuth angle needs to be adjusted, the drive unit 140 drives the first power input terminal 1321 to rotate the first screw 13232, causing the shift gear 13233 to mesh with the fifth gear shaft 1328; then it drives the second power input terminal to rotate the second gear shaft 1325, which in turn drives the shift gear 13233, which in turn drives the fifth gear shaft 1328, which in turn drives the second screws 1312 at both ends to rotate until the clutch stop pin 1314 reaches the unlock position, thus completing the unlocking action. Subsequently, the drive unit 140 drives the first screw 13232 to rotate for shifting, causing the shift gear 13233 to mesh with the third gear shaft 1326; then it drives the second power input terminal to rotate the second gear shaft 1325, which in turn drives the shift gear 13233, which in turn drives the third gear shaft 1326, until the reflector assembly reaches the preset angle, thus completing the angle setting action. Subsequently, the drive unit 140 drives the first screw 13232 to rotate for another gear shift, causing the shift gear 13233 to mesh with the fifth gear shaft 1328; then the second power input end is driven to rotate the second gear shaft 1325, which in turn drives the shift gear 13233 to rotate, which in turn drives the fifth gear shaft 1328 to rotate. The fifth gear shaft 1328 drives the second screws 1312 at both ends to rotate until the clutch stop pin 1314 reaches the locking position, at which point the locking action is completed.

[0038] The pitch angle adjustment device 200 includes: a transmission screw assembly 210, an upper fulcrum assembly 220, and a lower support 230; the lower support 230 and the upper fulcrum assembly 220 are fixedly connected to the boom 300 on one side and rotatably connected to the antenna 100 on the other side; the transmission screw assembly 210 is fixed to the back of the barrel-shaped housing 110, and its first connecting rod is rotatably connected to the upper fulcrum assembly 220; by the axial movement of the screw nut on the screw, the connecting rod drives the upper fulcrum assembly 220 to change its attitude, thereby realizing the adjustment of the pitch angle.

[0039] The upper fulcrum assembly 220 includes: a first connecting rod 2201, a second connecting rod 2202, and a first fixed base 2203; one end of the first connecting rod 2201 is rotatably connected to the antenna assembly 100, and the other end is rotatably connected to the second connecting rod 2202; the other end of the second connecting rod 2202 is connected to the first fixed base 2203, and the first fixed base 2203 is fixedly connected to the carrying pole 300; one end of the lower support 230 is fixedly connected to the carrying pole 300, and the other end is rotatably connected to the antenna assembly 100. The transmission screw assembly 210 includes: a screw bracket 2101, a screw support seat 2102, a screw 2103, a screw nut 2104, a third connecting rod 2105, and a gear set 2106. The lead screw support 2101 is fixed to the barrel-shaped housing 110. The lead screw 2103 is fixed to the lead screw support 2101 via the lead screw support seat 2102. The lead screw nut 2104 meshes with the lead screw 2103. One end of the third connecting rod 2105 is rotatably connected to the lead screw nut 2104, and the other end is rotatably connected to the upper fulcrum assembly 220. The gear set 2106 includes a third housing 21061, a first transmission gear 21062, a second transmission gear 21063, and an idler gear 21064. The first transmission gear 21062 is fixed to the shaft of the lead screw 2103 and is connected to the second transmission gear 21063 via the idler gear 21064. The second transmission gear 21063 is connected to the fourth gear shaft 1327 via the rotating shaft 138.

[0040] In this embodiment, the third outer shell 21061 of the gear set 2106 not only protects the gears, but also provides a waterproof seal by tightly adhering to the barrel-shaped shell 110 through a rubber pad.

[0041] When the antenna elevation angle needs to be adjusted, the drive unit 140 drives the first power input terminal 1321 to rotate the first screw 13232 to shift gears, causing the shift gear 13233 to mesh with the fourth gear shaft 1327; then it drives the second power input terminal to rotate the second gear shaft 1325, which in turn drives the shift gear 13233 to rotate, which in turn drives the fourth gear shaft 1327 to rotate. This, in turn, drives the second transmission gear 21063 to rotate via the rotating shaft 138, and drives the first transmission gear 21062 to rotate via the idler wheel 21064, thereby driving the lead screw 2103 to rotate. The rotation of the lead screw 2103 causes the lead screw nut 2104 to move along the axis of the lead screw 2103. The change in the position of the lead screw nut 2104 causes the third connecting rod 2105 to change the opening and closing posture of the upper fulcrum assembly 220 until the set angle is reached.

[0042] In this embodiment, the drive unit 140, through the shifting assembly 132, can be used to adjust the elevation angle and azimuth angle of the antenna assembly 100, as well as to lock and adjust the drive gear 1311 of the rotating locking assembly 131. The drive unit 140 is also used for phase adjustment of the phase shifter. This effectively reduces the amount of materials used, such as motors, and the overall weight, improving installation and maintenance efficiency and product reliability.

[0043] Reference Figure 14 The reflector assembly is rotatably connected to the barrel-shaped housing 110 via an azimuth adjustment device. Reducing rotational friction and improving rotational efficiency are also directions that the rotational mechanism needs to consider for optimization. This novel radome support assembly 150 adds a roller 1502 structure, enabling the roller 1502 to roll into contact with the barrel-shaped housing 110. This not only resists radome deformation and protects the vibrator, but also effectively reduces friction through the rolling connection. The radome support assembly 150 includes an radome support 1501 and a roller 1502. As shown in the figure, the roller 1502, through its arc-shaped elastic structure design, can achieve a certain degree of compression deformation, allowing the roller to rotate and be fixed within the roller groove of the radome support 1501. The roller groove of the radome support 1501 has a central circular hole, and the protrusions at both ends of the roller 1502 pass through the central circular hole of the roller groove of the radome support 1501, serving to prevent loosening. Reference Figure 15 The novel end cap assembly 160 incorporates a roller structure to achieve rolling contact between the end cap assembly 160 and the barrel-shaped housing 110, effectively reducing rotational friction. The end cap assembly 160 includes an end cap 1601 and a second roller 1602. As shown in the figure, the second roller 1602, through its arc-shaped elastic structure design, can achieve a certain degree of compression deformation, causing the roller to rotate and be fixed within the roller groove of the end cap 1601. The roller groove of the end cap 1601 has a central circular hole, and the second roller 1602 has bosses at both ends. The bosses at both ends of the second roller 1602 pass through the central circular hole of the roller groove of the end cap 1601, and serve to prevent loosening. It should be noted that in the actual production process, the roller can also be fixed in the roller groove of the radome by a snap-fit ​​mechanism, such as an elastic arm, as long as there is rotation between the two. The roller can be spherical, cylindrical, elliptical, etc., and there are no restrictions here. All of them are within the protection scope of this application.

[0044] In summary, in the base station antenna according to this utility model, by means of the shifting component, the azimuth adjustment device and the elevation adjustment device share a single drive assembly, thereby reducing the cost of the base station antenna according to this utility model, while fully satisfying its control functions. Furthermore, the azimuth adjustment device of the base station antenna according to this utility model is built into a cylindrical housing, which is not only aesthetically pleasing but also contributes to the stability of antenna performance.

[0045] The above are merely optional embodiments of this disclosure and are not intended to limit the embodiments of this disclosure. For those skilled in the art, various modifications and variations can be made to the embodiments of this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this disclosure should be included within the protection scope of the embodiments of this disclosure.

[0046] While embodiments of this disclosure have been described with reference to several specific examples, it should be understood that the embodiments of this disclosure are not limited to the specific embodiments disclosed. The embodiments of this disclosure are intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. The scope of the appended claims is to be interpreted in the broadest possible sense, thereby encompassing all such modifications and equivalent structures and functions.

Claims

1. A base station antenna, characterized in that, The base station antenna includes: An antenna assembly, comprising a barrel-shaped housing, a radiating component, and an azimuth adjustment device disposed within the barrel-shaped housing; A mast, on which the antenna assembly is mounted; A pitch angle adjustment device is disposed between the antenna assembly and the mast, wherein the antenna assembly includes: The drive assembly has a first power output shaft and a second power output shaft; A shifting assembly configured to shift gears based on the power output from the first power output shaft, thereby determining whether the second power output shaft drives the azimuth adjustment device or the pitch adjustment device.

2. The base station antenna according to claim 1, characterized in that, The drive assembly is located at one end of the barrel-shaped housing.

3. The base station antenna according to claim 1, characterized in that, The drive assembly also has a third power output shaft configured to connect to the phase shifter of the base station antenna to drive the phase shifter.

4. The base station antenna according to claim 1, characterized in that, The azimuth adjustment device includes a drive gear whose axis overlaps with the axis of the barrel-shaped housing, and wherein the drive gear is configured to selectively engage the shift assembly.

5. The base station antenna according to claim 4, characterized in that, The azimuth adjustment device also includes a clutch component to selectively fix the drive gear.

6. The base station antenna according to claim 5, characterized in that, The clutch member is coupled to the shift assembly such that the clutch member prevents the drive gear from rotating in a first position, and the drive gear can rotate when the clutch member is in a second position different from the first position.

7. The base station antenna according to claim 1, characterized in that, The antenna assembly includes a reflector assembly, which is rotatably connected to the barrel-shaped housing.

8. The base station antenna according to claim 7, characterized in that, The reflector assembly is provided with rollers near the barrel-shaped housing.

9. The base station antenna according to claim 1, characterized in that, The barrel-shaped shell has a circular end cap, and the inner side of the circular end cap has a roller structure.

10. The base station antenna according to claim 1, characterized in that, The pitch angle adjustment device is connected to the fixed base of the lever and the lead screw connected to the shift assembly.

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