Gear shift adjusting device and base station antenna

Abstract

The application provides a gear shift adjusting device and a base station antenna. The gear shift adjusting device comprises a mounting seat, a mounting cavity is arranged in the mounting seat; a gear shift transmission unit, at least one gear shift transmission part is arranged in the mounting cavity, the gear shift transmission part has a plurality of gear output parts, one gear output part is used for corresponding one antenna gear; a gear shift switching unit, a position selection driving part is arranged in the mounting cavity, and a position selection part is arranged corresponding to the gear shift transmission part, the position selection driving part is drivingly connected with the position selection part, so that the position selection part selects the gear output part in the corresponding gear shift transmission part; and a gear shift driving unit, a gear shift driving part is arranged in the mounting seat and corresponding to the gear shift transmission part, the gear shift driving part is used for driving the corresponding position selection part to drive the corresponding gear output part.

Description

Technical Field

[0001] This invention relates to the field of base station technology, and in particular to a gear shifting adjustment device and a base station antenna. Background Technology

[0002] A base station, also known as a public mobile communication base station, is an interface device for mobile devices to access the Internet. It is also a type of radio station, which refers to a radio transceiver station that transmits and receives signals between a mobile communication switching center and a mobile phone terminal within a certain radio coverage area. Both the base station and the terminal transmit and receive signals through an antenna.

[0003] With the increasing number of mobile terminals, the demand for mobile communication base station antennas is also growing. However, due to resource constraints at mobile base stations, integrating multiple antennas has become an increasingly necessary trend. For multi-band antennas, current electric adjustment methods involve using a separate downtilt adjustment device for each frequency band, meaning a single multi-band antenna requires multiple downtilt adjustment devices controlled by multiple motors. This results in complex antenna drive mechanisms, large footprint, and high operating costs. Summary of the Invention

[0004] This invention provides a gear shifting adjustment device and a base station antenna, aiming to solve the problems of existing antenna transmission devices being complex, occupying a large area, and costing a lot.

[0005] To address the problems existing in the prior art, the present invention provides a shift adjustment device, comprising:

[0006] Mounting base, wherein the mounting base has a mounting cavity;

[0007] The shift transmission unit includes at least one shift transmission part disposed in the mounting cavity, the shift transmission part having multiple gear output components, one of the gear output components being used to correspond to one antenna gear.

[0008] The gear shifting unit includes a selection drive unit disposed within the mounting cavity and a selection part corresponding to the gear shift transmission unit. The selection drive unit drives the selection part to select the corresponding gear output member in the gear shift transmission unit.

[0009] The shift drive unit includes a shift drive unit disposed on the mounting base and corresponding to the shift transmission unit, the shift drive unit being used to drive the corresponding selection unit to drive the corresponding gear output component.

[0010] According to the present application, a gear shifting adjustment device includes a gear shifting transmission part comprising a transmission shaft disposed in the mounting cavity and a plurality of transmission gears disposed on the transmission shaft, each of the transmission gears having a movable stroke for rotation along its axial direction, and each of the transmission gears driving and connecting to a gear output component.

[0011] According to a shift adjustment device provided by the present invention, the selection part includes at least one selection gear, and the selection drive part drives and connects the selection gear so that the selection gear has an axial movement stroke along the transmission shaft of the corresponding shift transmission part, and the selection gear is used to switch and select the transmission gear in the corresponding shift transmission part during the movement.

[0012] According to a shift adjustment device provided by the present invention, the selection part includes two selection gears, one selection gear corresponds to a gear output component of a portion of the shift transmission part, and the other selection gear corresponds to the remaining gear output component in the shift transmission part. When one selection gear is engaged with one of the transmission gears, the other selection gear is positioned between the other two transmission gears.

[0013] According to a gear shifting adjustment device provided by the present invention, the selection part includes a mounting shaft, the mounting shaft is arranged parallel to the corresponding transmission shaft, two selection gears are spaced apart on the mounting shaft, and each selection gear has a sliding stroke along the axial direction of the mounting shaft and a rotating stroke along the axial direction of the mounting shaft.

[0014] Each of the selected gears is used to select the corresponding transmission gear during the sliding active stroke, and to drive the selected transmission gear to rotate during the rotating active stroke.

[0015] According to a gear shifting adjustment device provided by the present invention, the selection part further includes a mounting sleeve movably sleeved on the mounting shaft, the two ends of the mounting sleeve are respectively connected to each of the selection gears, and the selection drive part is driven to connect the mounting sleeve for driving the mounting sleeve to slide on the mounting shaft.

[0016] According to a shift adjustment device provided by the present invention, the selection drive unit includes a drive screw, a transmission nut, and a first driver. The drive screw is arranged parallel to the corresponding mounting shaft. The transmission nut is threaded to the drive screw and is driven to the mounting sleeve. The first driver is driven to the drive screw for driving the drive screw to rotate.

[0017] According to a shift adjustment device provided by the present invention, the end of the drive screw is provided with a first positioning block, and the transmission nut is provided with a corresponding second positioning block. The first positioning block and the second positioning block cooperate with each other for positioning the transmission nut.

[0018] According to a shift adjustment device provided by the present invention, the shift drive unit includes a second driver, a drive switching element, and a first drive gear;

[0019] The drive switching component includes a switching shaft and a first bevel gear and a second drive gear respectively disposed at both ends of the switching shaft. The first drive gear is disposed at the end of the corresponding mounting shaft and meshes with the second drive gear. The second driver drives the first bevel gear.

[0020] According to a shift adjustment device provided by the present invention, the shift transmission unit includes a plurality of components, and the selection unit and the shift drive unit are correspondingly provided in a plurality of components;

[0021] Multiple shift transmission units are arranged sequentially along the horizontal direction. The mounting sleeves of adjacent selection units are connected by connecting rods extending along the horizontal direction. The selection drive unit drives and connects to the mounting sleeve of the first or last selection unit. Each shift drive unit drives and connects to the mounting shaft of the corresponding selection unit.

[0022] According to a shift adjustment device provided by the present invention, the shift transmission unit includes a plurality of components, and the selection unit and the shift drive unit are correspondingly provided in a plurality of components;

[0023] Multiple shift transmission units are arranged sequentially in a vertical direction. The mounting sleeves of adjacent selection units are connected by connecting blocks extending in a vertical direction. The selection drive unit drives and connects to the mounting sleeve of the first or last selection unit. Each shift drive unit drives and connects to the mounting shaft of the corresponding selection unit.

[0024] According to a shift adjustment device provided by the present invention, the end of the drive screw is provided with a second bevel gear, and the first driver includes a first drive rod passing through the side wall of the mounting cavity and a first spur gear provided on the first drive rod, wherein the first spur gear is meshed with the second bevel gear.

[0025] According to a gear shifting adjustment device provided by the present invention, each gear output component includes an output shaft and a third bevel gear disposed on the output shaft, each third bevel gear is meshed with the corresponding transmission gear, and each output shaft passes through the side wall of the mounting cavity.

[0026] According to a shift adjustment device provided by the present invention, the mounting cavity is provided with multiple sets of limiting seats, and the multiple sets of limiting seats are distributed at intervals along the length direction of the transmission shaft;

[0027] Each set of limiting seats includes a first limiting seat and a second limiting seat arranged opposite to each other. Each transmission gear is disposed between the corresponding first limiting seat and second limiting seat. The first limiting seat is provided with a mounting hole, and the second limiting seat is provided with a mounting groove. The mounting groove and the mounting hole are both used to limit the rotation of the transmission shaft.

[0028] The shift adjustment device provided by this invention has a compact structure. Through the coordinated work of the shift transmission unit, shift switching unit and shift drive unit, multiple sets of power can be selectively output with a single position drive unit. It occupies little space, which is conducive to the miniaturization and thinning of multi-frequency fusion antennas, and further helps to reduce costs and improve the working efficiency of the shift adjustment device. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0030] Figure 1 A three-dimensional structural schematic diagram of the first embodiment of the shift adjustment device provided by the present invention;

[0031] Figure 2 for Figure 1 A three-dimensional structural disassembly diagram;

[0032] Figure 3 for Figure 1 A schematic diagram of a partial three-dimensional structure;

[0033] Figure 4 yes Figure 1 A schematic diagram of the local structure in the first state;

[0034] Figure 5 yes Figure 1 A schematic diagram of the local structure in the second state;

[0035] Figure 6 yes Figure 1 A partial structural diagram of the gear shifting unit;

[0036] Figure 7 This is a three-dimensional structural schematic diagram of the second embodiment of the shift adjustment device provided by the present invention;

[0037] Figure 8 yes Figure 7 A partial structural diagram;

[0038] Figure 9 This is a three-dimensional structural schematic diagram of the third embodiment of the shift adjustment device provided by the present invention;

[0039] Figure 10 yes Figure 9 A partial structural diagram.

[0040] Reference numerals: 1: Gear shifting adjustment device; 2: Mounting base; 3: Gear shifting transmission unit; 4: Gear shifting switching unit; 5: Gear shifting drive unit; 6: Mounting cavity; 7: Connecting rod; 8: Connecting block; 9: Gear shifting transmission part; 10: Position selection drive part; 11: Position selection part; 12: Gear shifting drive part; 13: Gear output component; 14: Drive shaft; 15: Drive gear; 16: Drive screw; 17: Drive nut; 18: First driver; 19: Position selection gear; 20: Mounting shaft; 1: Mounting sleeve; 22: Second driver; 23: Drive switching component; 24: First drive gear; 25: Output shaft; 26: Third bevel gear; 27: First positioning block; 28: Second bevel gear; 29: Second positioning block; 30: First drive rod; 31: First spur gear; 32: Second drive rod; 33: Second spur gear; 34: Switching shaft; 35: First bevel gear; 36: Second drive gear; 37: Alternating groove; 38: First limit seat; 39: Second limit seat. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0042] In the description of the embodiments of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention based on the specific circumstances.

[0044] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0045] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0046] The following is combined Figures 1-10 The present invention describes the shift adjustment device 1 and the base station antenna provided by the present invention.

[0047] To address the problems of complex transmission mechanisms, large footprint, and high cost in traditional antenna transmission technologies, this invention provides a shift adjustment device 1 and a base station antenna. Since the main inventive point of this invention lies in the shift adjustment device 1, the relevant structure of the base station antenna will not be described in detail.

[0048] This invention provides a gear shifting adjustment device 1, a mounting base 2, wherein the mounting base 2 has a mounting cavity 6; a gear shifting transmission unit 3, including at least one gear shifting transmission part 9 disposed in the mounting cavity 6, the gear shifting transmission part 9 having multiple gear output parts 13, one gear output part 13 being used to correspond to one antenna gear; a gear shifting switching unit 4, including a selection drive part 10 disposed in the mounting cavity 6 and a selection part 11 disposed corresponding to the gear shifting transmission part 9, the selection drive part 10 driving the selection part 11 so that the selection part 11 selects the corresponding gear output part 13 in the gear shifting transmission part 9; and a gear shifting drive unit 5, including a gear shifting drive part 12 disposed in the mounting base 2 and disposed corresponding to the gear shifting transmission part 9, the gear shifting drive part 12 being used to drive the corresponding selection part 11 to drive the corresponding gear output part 13.

[0049] It should be noted that the shift adjustment device 1 provided in the first embodiment of the present invention has one shift transmission unit 9, while the shift adjustment devices 1 provided in the second and third embodiments have two (or more) shift transmission units 9. Each shift transmission unit 9 can correspond to multiple antenna positions, thus providing more antenna positions. Based on this, the present invention provides a selection unit 11 corresponding to the shift transmission unit 9, and each selection unit 11 can select the antenna position in its corresponding shift transmission unit 9. In conventional technology, multiple selection drive units 10 are provided to drive different selection units 11 respectively. In the technical solution provided by the present invention, one selection drive unit 10 drives one selection unit 11, which can be the first selection unit 11 or the last selection unit 11. Thus, under the linkage, each selection unit 11 will correspond to an antenna position. Furthermore, since the shift adjustment device 1 provided by the present invention has multiple shift drive units 12 corresponding to the selection units 11, when a certain antenna position needs to be selected, the corresponding shift drive unit 12 is driven.

[0050] The shift adjustment device 1 provided by the present invention has a compact structure. Through the coordinated work of the shift transmission unit 3, the shift switching unit 4 and the shift drive unit 5, multiple sets of power can be selectively output using a single position drive unit 10. It occupies little space, which is conducive to the miniaturization and thinning of multi-frequency fusion antennas, and further helps to reduce costs and improve the working efficiency of the shift adjustment device 1.

[0051] Specifically, the gear shift transmission unit 9 includes a drive shaft 14 disposed within the mounting cavity 6 and a plurality of drive gears 15 disposed on the drive shaft 14, as can be found in [reference needed]. Figures 2-3The drive shaft 14 extends along the length of the mounting base 2, and the drive gears 15 are arranged sequentially at intervals along the length of the mounting base 2. Each drive gear 15 has an axial rotational travel and each drive gear 15 drives and connects to a gear output component 13. The selection unit 11 includes at least one selection gear 19, and the selection drive unit 10 drives and connects to the selection gear 19 so that the selection gear 19 has an axial movement travel along the drive shaft 14 of the corresponding shift transmission unit 9. During the movement of the selection gear 19, the selection gear 19 will sequentially mesh with multiple drive gears 15 on the corresponding drive shaft 14 to select the antenna gear.

[0052] As mentioned earlier, there is at least one selection gear 19. One selection gear 19 is the simplest case, where it only needs to mesh with each transmission gear 15 sequentially. However, this arrangement is more suitable for situations where the number of transmission gears 15 on a single transmission shaft 14 is low. For example, when only 3 or 4 transmission gears 15 are set on a single transmission shaft 14, the length of the transmission shaft 14 is controllable, and one selection gear 19 can meet the driving requirements. However, if more than 5, such as 8 or 10 transmission gears 15, are set on a single transmission shaft 14, the length of the transmission shaft 14 will be longer, resulting in a long movement path for the selection gear 19, which is not conducive to driving the selection gear 19 and simplifying the drive source. Therefore, when the number of transmission gears 15 is large, i.e., when one shift transmission unit 9 corresponds to many antenna gears, multiple selection gears 19 can be set in one selection unit 11, allowing each selection gear 19 to correspond to multiple gear output components 13. Therefore, in the technical solution provided by the present invention, the gear selection unit 11 includes two gear selection gears 19. One gear selection gear 19 corresponds to a portion of the gear output component 13 in a gear shift transmission unit 9, and the other gear selection gear 19 corresponds to the remaining gear output component 13 in the gear shift transmission unit 9. When one gear selection gear 19 is engaged with one of the transmission gears 15, the other gear selection gear 19 is positioned between the other two transmission gears 15. Please refer to [link / reference]. Figure 3Taking the first embodiment as an example, a drive shaft 14 is provided with eight drive gears 15. In the initial state, one selection gear 19 is arranged parallel to the first drive gear 15, and another selection gear 19 is located between the fourth and fifth drive gears 15. That is, the first selection gear 19 corresponds to the first four antenna positions, and the second selection gear 19 corresponds to the last four antenna positions. With this arrangement, each selection gear 19 only needs to control half of the drive gears 15 in the drive shaft 14, and each selection gear 19 only needs to move half the distance in the entire process. Compared with using a single selection gear 19 (if a single selection gear 19 is used, the single selection gear 19 needs to engage with all the drive gears 15, and the single selection gear 19 needs to travel the entire length of the drive shaft 14), the length of the shift adjustment device 1 can be shortened. It should be noted that the number of selection gears 19 can be more, such as three or four. However, if the number of selection gears 19 is increased, the distance between each transmission gear 15 needs to be increased (it is necessary to ensure that when one transmission gear 15 is in the meshing state, the other transmission gear 15 needs to be in the distance between other adjacent transmission gears 15). Therefore, setting two selection gears 19 is the optimal embodiment.

[0053] Furthermore, the selection unit 11 includes a mounting shaft 20, which is parallel to the corresponding transmission shaft 14. Two selection gears 19 are spaced apart on the mounting shaft 20. Each selection gear 19 has a sliding stroke along the axial direction of the mounting shaft 20 and a rotating stroke along the axial direction of the mounting shaft 20. Each selection gear 19 is used to select the corresponding transmission gear 15 during the sliding stroke and to drive the selected transmission gear 15 to rotate during the rotating stroke. It should be noted that the shaft hole of the selection gear 19 can be polygonal, and correspondingly, the axial section of the mounting shaft can also be set as polygonal. In this way, under no external force, the selection gear 19 is fixed in its current position and can rotate axially with the rotation of the mounting shaft 20 to drive the corresponding transmission gear 15. When an external force is present, the selection gear 19 can move on the mounting shaft 20 with the external force, thereby selecting the corresponding transmission gear 15.

[0054] It should be noted that the positioning drive unit 10 drives the positioning gear 19. When there are many positioning gears 19, the positioning drive unit 10 can simultaneously drive multiple positioning gears 19 to move, which can effectively simplify the drive source. In the technical solution provided by the present invention, the positioning unit 11 also includes a mounting sleeve 21 movably sleeved on the mounting shaft 20. Two positioning gears 19 are respectively connected to both ends of the mounting sleeve 21. The positioning drive unit drives the mounting sleeve 21 to slide on the mounting shaft 20. In this case, the two positioning gears 19 move synchronously with the movement of the mounting sleeve 21. Please refer to [link / reference]. Figure 4In the first state, the first selection gear 19 meshes with the first transmission gear 15, and the other selection gear 19 is located between the fourth and fifth transmission gears 15. At this time, if the mounting shaft 20 is driven, that is, the first selection gear 19 drives the meshed first transmission gear 15 to rotate, i.e., the first antenna position is output; please refer to [link to relevant documentation]. Figure 5 At this point, the mounting sleeve 21 moves a certain distance, and the first selection gear 19 is positioned between the first transmission gear 15 and the second transmission gear 15. The second selection gear 19 meshes with the fifth transmission gear 15. If the mounting shaft 20 is driven at this time, the second selection gear 19 drives the fifth transmission gear 15 to rotate, resulting in the output of the fifth antenna position. Therefore, in this configuration, as the mounting sleeve 21 moves, the antenna positions are not output sequentially according to the setting order. It should be noted that this method utilizes the staggered meshing state of the two selection gears 19, eliminating the need for an additional drive source. Driving one mounting shaft 20 is sufficient to complete the output of all antenna positions, saving costs and improving drive efficiency. Furthermore, it should be noted that the two ends of the mounting sleeve 21 extend to form retaining brackets, on which the selection gear 19 is mounted. The retaining brackets provide a certain degree of limitation for the selection gear 19.

[0055] Furthermore, the positioning drive unit 10 needs to drive the mounting sleeve 21 to move. In the technical solution provided by the present invention, the positioning drive unit 10 includes a drive screw 16, a transmission nut 17, and a first driver 18. The drive screw 16 is arranged parallel to the corresponding mounting shaft 20. The transmission nut 17 is threaded to the drive screw 16 and drives the mounting sleeve 21. The first driver 18 drives the drive screw 16. While the drive screw 16 rotates, the transmission nut 17 moves along the drive screw 16, thereby driving the mounting sleeve 21 to move and completing the meshing of the positioning gear 19 with each transmission gear 15. It should be noted that the positioning drive unit 10 can also have other driving methods, such as using a cylinder to drive the mounting sleeve 21 to move. However, the cylinder may occupy a large area. The present invention does not limit other driving methods.

[0056] Furthermore, a first positioning block 27 is provided at the end of the drive screw 16, and a corresponding second positioning block 29 is provided on the transmission nut 17. The first positioning block 27 and the second positioning block 29 cooperate with each other for positioning the transmission nut 17. It should be noted that when the transmission nut 17 moves to the end of the drive screw 16, the first positioning block 27 and the second positioning block 29 come into contact with each other, and at this time the transmission nut 17 can no longer move. This position can be regarded as the zero position of the device, that is, the initial state. After each gear shift, by driving the drive screw 16 to find the zero position of the transmission nut 17, the entire device can be restored to the initial zero position state, preparing for the next gear shift.

[0057] Specifically, the shift drive unit 12 includes a second driver 22, a drive switching component 23, and a first drive gear 24. The drive switching component 23 includes a switching shaft 34 and a first bevel gear 35 and a second drive gear 36 respectively disposed at both ends of the switching shaft 34. The first drive gear 24 is disposed at the end of the corresponding mounting shaft 20 and meshes with the second drive gear 36. The second driver 22 drives the first bevel gear 35. The engagement between the bevel gear and the drive gear can change the transmission direction to 90°, thus optimizing the internal layout of the device.

[0058] Furthermore, in some cases, a single shift transmission unit 9 may not be sufficient, thus requiring multiple shift transmission units 9 to accommodate more antenna positions. In the first arrangement, multiple shift transmission units 9 are included, with multiple selection units 11 and shift drive units 12 correspondingly configured. These multiple shift transmission units 9 are arranged sequentially along the horizontal direction. The mounting sleeves 21 of adjacent selection units 11 are connected by connecting rods 7 extending horizontally. The selection drive unit 10 drives the mounting sleeve 21 of the first or last selection unit 11, and each shift drive unit 12 drives the mounting shaft 20 of its corresponding selection unit 11. This arrangement is suitable for installation locations with ample horizontal space; please refer to [link to relevant documentation]. Figures 7-8 When there are two shift transmission units 9, they are arranged horizontally. The selection drive unit 10 drives and connects to the first selection unit 11. Since the two mounting shafts 20 are connected by the connecting rod 7, the movement of the first mounting sleeve 21 will drive the movement of the second mounting sleeve 21. It can be seen that the arrangement of the selection gears 19 on the two mounting shafts 20 is the same. It should be noted that when the selection drive unit 10 is driven, both selection units 11 will correspond to an antenna position. Since the two antenna positions are driven by different shift drive units 12, the corresponding shift drive unit 12 can be selected to drive the corresponding antenna position according to actual needs. It should also be noted that the upper end face of the mounting base 2 is provided with a clearance groove 37 for the movement of the connecting rod 7.

[0059] In the second arrangement, the shift transmission unit 9 includes multiple units, and the selection unit 11 and shift drive unit 12 are correspondingly multiple units. The multiple shift transmission units 9 are arranged vertically in sequence. The mounting sleeves 21 of adjacent selection units 11 are connected by connecting blocks 8 extending vertically. The selection drive unit 10 drives the mounting sleeve 21 of the first or last selection unit 11, and each shift drive unit 12 drives the mounting shaft 20 of the corresponding selection unit 11. This arrangement is suitable for installation locations with ample vertical space. Please refer to [link / reference]. Figures 9-10When there are two shift transmission units 9, they are arranged vertically. The selection drive unit 10 drives the first selection unit 11 located at the bottom. Since the two mounting shafts 20 are connected by the connecting block 8, the movement of the first mounting sleeve 21 will drive the movement of the second mounting sleeve 21. It can be seen that the arrangement of the selection gears 19 on the two mounting shafts 20 is the same. Similar to the previous one, when the selection drive unit 10 is driven, each selection unit 11 corresponds to an antenna position. Since the two antenna positions are driven by different shift drive units 12, the corresponding antenna position can be driven by the corresponding shift drive unit 12 according to actual needs.

[0060] Furthermore, the end of the drive screw 16 is provided with a second bevel gear 28. The first driver 18 includes a first drive rod 30 passing through the side wall of the mounting cavity 6 and a first spur gear 31 disposed on the first drive rod 30. The first spur gear 31 meshes with the second bevel gear 28. Each gear output component 13 includes an output shaft 25 and a third bevel gear 26 disposed on the output shaft 25. Each third bevel gear 26 meshes with the corresponding transmission gear 15. Each output shaft 25 passes through the side wall of the mounting cavity 6. It should be noted that this device adopts a bevel gear and spur gear meshing form, which can change the driving direction from a linear direction to a 90° direction, which is more conducive to the compact layout of the device. It should also be noted that the second driver 22 is arranged similarly to the first driver 18, and also includes a second drive rod 32 and a second spur gear 33.

[0061] Furthermore, the mounting cavity 6 is provided with multiple sets of limiting seats, which are spaced apart along the length of the transmission shaft 14. It should be noted that in the technical solution provided in this application, the transmission shaft 14 is fixed and cannot rotate, while only the transmission gear 15 rotates. See also... Figure 2 Each set of limiting seats includes a first limiting seat 38 and a second limiting seat 39 arranged opposite to each other. The transmission gear 15 is disposed between the corresponding first limiting seat 38 and second limiting seat 39 to limit the movement of the transmission gear 15 in the axial direction of the transmission shaft 14. In addition, the first limiting seat 38 is provided with a mounting hole, and the second limiting seat 39 is provided with a mounting groove. The transmission shaft 14 is disposed in the mounting groove and passes through the mounting hole. In this way, the transmission of the transmission shaft 14 can be effectively limited by the setting of the limiting seats.

[0062] The following describes the working process of the shift adjustment device 1 provided by the present invention, taking the first embodiment as an example:

[0063] First, the first drive rod 30 is driven to rotate forward or backward, which sequentially drives the first spur gear 31, the second bevel gear 28, and the drive screw 16 to rotate in the corresponding directions. This drives the transmission nut 17 to move linearly forward or backward along the axial direction (the zero position can be at the end or the middle of the drive screw 16), causing the first positioning block 27 to contact the second positioning block 29, at which point the shift adjustment device 1 reaches the zero starting position. Then, the first drive rod 30 is controlled to rotate a set number of revolutions (each set number of revolutions corresponds to one antenna gear), which drives the two selection gears 19 to move linearly along the mounting shaft 20, causing the first selection gear 19 to mesh with a certain transmission gear 15 and stop. Next, the second driver 22 is driven to rotate forward or backward, thus sequentially driving the first bevel gear 35, the second drive gear 36, and the first drive gear 24 to rotate. The first drive gear 24 is located at the end of the mounting shaft 20, and thus drives the selection gear 19 to drive the corresponding transmission gear 15 to rotate in the corresponding direction of rotation, thereby driving the corresponding gear output component 13 to rotate. The gear output component 13 is connected to a phase shifter for adjusting the antenna downtilt angle, thus realizing the adjustment of the first set of antenna phase shifters.

[0064] After the adjustment of the first set of antenna phase shifters is completed, the second driver 22 is stopped. The first drive rod 30 is driven to rotate again, and the zero starting position of the shift adjustment device 1 is found. The first drive rod 30 is then controlled to rotate a set number of turns, thereby driving the two selection gears 19 to move linearly along the axial direction of the mounting shaft 20, so that the selection gears 19 stop after the other transmission gears 15. The second driver 22 is then driven to rotate in the forward or reverse direction, thus driving the first bevel gear 35, the second drive gear 36, and the first drive gear 24 to rotate in sequence. The first drive gear 24 is located at the end of the mounting shaft 20, so it also drives the selection gear 19 to drive the corresponding transmission gear 15 to rotate in the corresponding direction of rotation, thereby driving the corresponding gear output component 13 to rotate. The gear output component 13 is connected to a phase shifter for adjusting the antenna downtilt angle, thus realizing the adjustment of the second set of antenna phase shifters.

[0065] Similarly, the first drive rod 30 can selectively engage the two selection gears 19 with all the transmission gears 15, thereby driving the second driver 22 to adjust in the forward or reverse direction, and thus achieving the adjustment of all phase shifters. This achieves the goal of adjusting multiple antenna phase shifters using only two power sources. It should be noted that the use of multiple selection drive units 10 is similar to the above. When the selection drive unit 10 is driven, each of the multiple selection units 11 corresponds to an antenna position. Since multiple antenna positions are driven by different shift drive units 12, the corresponding shift drive unit 12 can be selected to drive the corresponding antenna position according to actual needs.

[0066] It should be noted that when there is only one position drive unit 10, the screws, gears, and other components used in the shift adjustment device 1 can all have their axes set on the same flat layer. This allows the entire shift adjustment device 1 to be made very thin, offering a significant height advantage compared to "cylindrical" layouts or staggered stacking of shift components in the same field. Of course, when there are multiple position drive units 10, the screws, gears, and other components used in each layer or unit can also have their axes set on the same flat layer, which also optimizes the overall layout and improves the compactness of the device.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A gear shifting adjustment device, characterized in that, include: Mounting base, wherein the mounting base has a mounting cavity; The shift transmission unit includes at least one shift transmission part disposed in the mounting cavity, the shift transmission part having a plurality of gear output members, one of the gear output members being used to correspond to one antenna gear; The gear shifting unit includes a selection drive unit disposed in the mounting cavity and a selection part disposed corresponding to the gear shift transmission unit. The selection drive unit drives and connects to the selection part so that the selection part selects the corresponding gear output component in the gear shift transmission unit. as well as, The shift drive unit includes a shift drive unit disposed on the mounting base and corresponding to the shift transmission unit, the shift drive unit being used to drive the corresponding selection unit to drive the corresponding gear output component; The gear shifting transmission unit includes a drive shaft disposed in the mounting cavity and a plurality of drive gears disposed on the drive shaft. Each drive gear has a travel along its axial direction and each drive gear drives and connects to one of the gear output components. The selection unit includes at least one selection gear, and the selection drive unit drives and connects to the selection gear so that the selection gear has an axial travel along the drive shaft of the corresponding shift transmission unit. The selection gear is used to switch and select the transmission gear in the corresponding shift transmission unit during the activity. The selection unit includes two selection gears. One selection gear corresponds to a portion of the gear output element in one shift transmission unit, and the other selection gear corresponds to the remaining gear output element in the shift transmission unit. When one selection gear is engaged with one of the transmission gears, the other selection gear is positioned between the other two transmission gears. The selection part includes a mounting shaft, and the selection part also includes a mounting sleeve movably sleeved on the mounting shaft. The two ends of the mounting sleeve are respectively connected to each of the selection gears. The selection drive part drives the mounting sleeve to slide on the mounting shaft. The selection drive unit includes a drive screw, a transmission nut, and a first driver. The drive screw is arranged parallel to the corresponding mounting shaft. The transmission nut is threaded to the drive screw and is driven to the mounting sleeve. The first driver is driven to the drive screw and is used to drive the drive screw to rotate. The end of the drive screw is provided with a first positioning block, and the transmission nut is provided with a corresponding second positioning block. The first positioning block and the second positioning block cooperate with each other for positioning the transmission nut.

2. The shift adjustment device according to claim 1, characterized in that, The mounting shaft is arranged parallel to the corresponding transmission shaft, and the two selection gears are spaced apart on the mounting shaft. Each selection gear has a sliding stroke along the axial direction of the mounting shaft and a rotating stroke along the axial direction of the mounting shaft. Each of the selected gears is used to select the corresponding transmission gear during the sliding active stroke, and to drive the selected transmission gear to rotate during the rotating active stroke.

3. The shift adjustment device according to claim 1, characterized in that, The shift drive unit includes a second driver, a drive switching component, and a first drive gear; The drive switching component includes a switching shaft and a first bevel gear and a second drive gear respectively disposed at both ends of the switching shaft. The first drive gear is disposed at the end of the corresponding mounting shaft and meshes with the second drive gear. The second driver drives the first bevel gear.

4. The shift adjustment device according to claim 1, characterized in that, The shift transmission unit includes multiple units, and the selection unit and the shift drive unit are correspondingly multiple units; Multiple shift transmission units are arranged sequentially along the horizontal direction. The mounting sleeves of adjacent selection units are connected by connecting rods extending along the horizontal direction. The selection drive unit drives and connects to the mounting sleeve of the first or last selection unit. Each shift drive unit drives and connects to the mounting shaft of the corresponding selection unit.

5. The shift adjustment device according to claim 1, characterized in that, The shift transmission unit includes multiple units, and the selection unit and the shift drive unit are correspondingly multiple units; Multiple shift transmission units are arranged sequentially in a vertical direction. The mounting sleeves of adjacent selection units are connected by connecting blocks extending in a vertical direction. The selection drive unit drives and connects to the mounting sleeve of the first or last selection unit. Each shift drive unit drives and connects to the mounting shaft of the corresponding selection unit.

6. The shift adjustment device according to claim 1, characterized in that, The end of the drive screw is provided with a second bevel gear. The first driver includes a first drive rod that passes through the side wall of the mounting cavity and a first spur gear provided on the first drive rod. The first spur gear is meshed with the second bevel gear.

7. The shift adjustment device according to claim 1, characterized in that, Each of the gear output components includes an output shaft and a third bevel gear disposed on the output shaft. Each of the third bevel gears is meshed with the corresponding transmission gear, and each of the output shafts passes through the side wall of the mounting cavity.

8. The shift adjustment device according to claim 1, characterized in that, The mounting cavity is provided with multiple sets of limiting seats, and the multiple sets of limiting seats are distributed at intervals along the length direction of the drive shaft; Each set of limiting seats includes a first limiting seat and a second limiting seat arranged opposite to each other. Each transmission gear is disposed between the corresponding first limiting seat and second limiting seat. The first limiting seat is provided with a mounting hole, and the second limiting seat is provided with a mounting groove. The mounting groove and the mounting hole are both used to limit the rotation of the transmission shaft.

9. A base station antenna, characterized in that, Includes the shift adjustment device as described in any one of claims 1-8.

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