Shift adjustment device and base station antenna

Abstract

The present invention provides a shift adjustment device and a base station antenna. The shift adjustment device includes: a mounting base, a plurality of output members, each of the output members being used to form a gear position respectively; a shifting mechanism, including a planetary support and planetary gears disposed in the mounting cavity, the revolution movement stroke of the planetary gears being used to switch and select the corresponding output members, and the rotation movement stroke of the planetary gears being used to drive the corresponding output members to move; a locking mechanism, including a first locking structure and a second locking structure movably disposed on the mounting base, the first locking structure being used to lock the planetary support, and the second locking structure being used to lock the movement of each of the output members; and a driving mechanism, which is used to drive the shifting mechanism to move. The shift adjustment device and the base station antenna provided by the present invention aim to solve the problems of the traditional antenna transmission device being relatively complex in transmission, occupying a large area, and having a high cost.

Description

Technical Field

[0001] The present invention relates to the technical field of base stations, and particularly to a gear shifting adjustment device and a base station antenna. Background Art

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

[0003] With the continuous increase in the number of mobile terminals, the demand for mobile communication base station antennas is also increasing. However, due to the resource limitations of mobile base stations, it has increasingly become a demand trend to integrate multiple antennas together. For multi-band antennas, the current electric adjustment method is to use a tilt angle adjustment device for each frequency band of the antenna, that is, a multi-band antenna requires multiple tilt angle adjustment devices, which are controlled and adjusted by multiple motors. This causes problems such as complex transmission of the antenna drive adjustment mechanism, large floor area, and high usage cost. Summary of the Invention

[0004] The present invention provides a gear shifting adjustment device and a base station antenna, aiming to solve the problems of complex transmission, large occupied area, and high cost of the existing antenna drive device.

[0005] In view of the problems existing in the prior art, the present invention provides a gear shifting adjustment device, including:

[0006] A mounting seat, the mounting seat having a mounting cavity, and a plurality of output members are provided in the mounting cavity, and each output member is used to form a gear position respectively;

[0007] A gear shifting mechanism, including a planetary carrier and planetary gears provided in the mounting cavity. The planetary carrier has a first end and a second end, and the planetary gears are provided at the second end. The planetary gears have a revolution movement stroke around the first end and a rotation movement stroke around their own axes. The revolution movement stroke of the planetary gears is used to switch and select the corresponding output members, and the rotation movement stroke of the planetary gears is used to drive the corresponding output members to move;

[0008] A locking mechanism, including a first locking structure and a second locking structure movably provided on the mounting seat. The first locking structure corresponds to the planetary carrier and is used to lock the planetary carrier, and the second locking structure corresponds to each output member and is used to lock the movement of each output member;

[0009] A driving mechanism, provided on the mounting seat, for driving the gear shifting mechanism to move.

[0010] A shift adjustment device provided according to the present invention, the drive mechanism includes a drive shaft and a central gear, the central gear is arranged at the first end, a part of the drive shaft located in the installation cavity passes through the first end and is drivingly connected to the central gear, and the central gear is meshed and connected with the planetary gear for driving the planetary gear to rotate.

[0011] A shift adjustment device provided according to the present invention, the installation cavity has a first cover body and a second cover body oppositely arranged in the height direction, the output member includes output gear shafts annularly distributed in the installation cavity, one end of the output gear shaft is connected to the first cover body, and the other end is connected to the second cover body;

[0012] The first locking structure includes an output shaft, an intermediate gear, an adjusting gear and an adjusting nut arranged outside the installation cavity, the output shaft is drivingly connected to the intermediate gear, the intermediate gear is movably sleeved on the drive shaft and is meshed and connected with the adjusting gear;

[0013] The adjusting gear is provided with a stud, the adjusting nut is threadedly connected to the stud to have a moving stroke along the axial direction of the stud, the first cover body is provided with a guiding hole, and the adjusting nut is used to extend into the installation cavity along the guiding hole during the moving stroke to abut against and lock the planetary carrier.

[0014] A shift adjustment device provided according to the present invention, the adjusting nut has a plurality of guiding columns, each of the guiding columns is annularly distributed, and the distribution radius of each of the guiding columns is equal to the circumferential radius of the planetary gear;

[0015] The first cover body is provided with a plurality of the guiding holes, each of the guiding holes is correspondingly arranged with each of the guiding columns, and each of the guiding columns is used to extend into the installation cavity along the corresponding guiding hole to abut against and lock the second end.

[0016] A shift adjustment device provided according to the present invention, the adjusting gear is provided with a first positioning block, and the adjusting nut is correspondingly provided with a second positioning block. When the first positioning block abuts against the second positioning block, each of the guiding columns is arranged away from the second end.

[0017] A shift adjustment device provided according to the present invention, there are a plurality of the second locking structures, each of the second locking structures is annularly distributed and corresponds to each of the output gear shafts respectively;

[0018] The second locking structure includes a locking block and an elastic member provided on the locking block. One end of the elastic member abuts against the locking block, and the other end abuts against the second cover body. When the elastic member is in the initial state, the corresponding locking blocks are all engaged with the corresponding output gear shafts to lock the corresponding output gear shafts. When the elastic member is in the compressed state, the corresponding locking blocks are separated from the corresponding output gear shafts.

[0019] During the rotation of the second end, it corresponds to each of the locking blocks respectively, and the second end is used to drive the corresponding elastic member to deform when being abutted by the adjusting nut.

[0020] According to a shift adjusting device provided by the present invention, a seat body is provided on one side of the second cover body facing the installation cavity. Slots are provided on the circumferential side of the seat body, and each of the locking blocks is movably inserted into each of the slots.

[0021] The locking block has positioning teeth, and the positioning teeth are used to be engaged with the output gear shaft.

[0022] According to a shift adjusting device provided by the present invention, a plurality of positioning columns are further provided at one end of the second cover body facing the installation cavity. A plurality of first guiding grooves are provided on each of the locking blocks, and each of the first guiding grooves is slidably clamped corresponding to each of the positioning columns.

[0023] A second guiding groove is further provided on each of the locking blocks, and each of the second guiding grooves is used to be slidably clamped with the output shaft of the output gear shaft. Both the first guiding groove and the second guiding groove are used to guide the movement of the locking block.

[0024] According to a shift adjusting device provided by the present invention, a transition column is provided between two adjacent output gear shafts, and the transition column extends along the length direction of the output gear shaft. Each of the transition columns and the tooth blocks of each of the output gear shafts are used to form a tooth ring.

[0025] According to a shift adjusting device provided by the present invention, a third positioning block protrudes on the second end, and a fourth positioning block is provided on one side of the first cover body facing the installation cavity. The third positioning block selectively abuts against the fourth positioning block during the moving stroke of rotation.

[0026] The present invention further provides a base station antenna, including the shift adjusting device as described in any one of the above.

[0027] The shifting adjustment device provided by the present invention, since the planetary gear has both a revolution movement stroke and a rotation movement stroke during the movement process, first uses the second locking structure to lock the movement of the output member, then the planetary gear can select the corresponding output member during the revolution movement stroke, and will not cause the movement of the output member during the movement process, thereby completing the gear selection; when the planetary gear selects the corresponding output member, that is, the corresponding gear, then uses the first locking structure to lock the planetary carrier, that is, the revolution movement stroke of the planetary gear can be restricted, so that the rotation movement stroke of the planetary gear can drive the corresponding output member to move, thereby completing the output of the selected gear. The shifting adjustment device provided by the present invention has a compact structure, and through the cooperation of the shifting mechanism, the locking mechanism and the driving mechanism, multiple groups of power can be selectively output, realizing the miniaturization of the shifting adjustment device and reducing the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0029] Figure 1 Schematic diagram of the three-dimensional structure of an embodiment of the shifting adjustment device provided by the present invention;

[0030] Figure 2 is Figure 1 exploded structure diagram;

[0031] Figure 3 is Figure 1 Cross-sectional structure diagram along the longitudinal direction in the first state (the first locking structure is unlocked, and the second locking structure is locked);

[0032] Figure 4 is Figure 1 Partial cross-sectional structure diagram along the longitudinal direction in the second state (the first locking structure is locked, and the second locking structure is unlocked);

[0033] Figure 5 is Figure 1 Cross-sectional structure diagram along the transverse direction in the first state;

[0034] Figure 6 is Figure 1 Cross-sectional structure diagram along the transverse direction in the second state;

[0035] Figure 7 is Figure 6 Cross-sectional structure diagram of the relative direction in the second state;

[0036] Figure 8 is Figure 1 A three-dimensional structure schematic diagram of a part of

[0037] Figure 9 is Figure 1 A three-dimensional structure schematic diagram of a part of

[0038] Figure 10 is Figure 1 A partial structure schematic diagram of

[0039] Figure 11 is Figure 1 A three-dimensional structure schematic diagram of the locking block in

[0040] Reference numerals: 1: Shift adjustment device; 2: Mounting seat; 3: Shift mechanism; 4: Locking mechanism; 5: Driving mechanism; 6: Mounting cavity; 7: First cover; 8: Second cover; 9: Transition column; 10: Output gear shaft; 11: Guide hole; 12: Fourth positioning block; 13: Seat body; 14: Slot; 15: Positioning column; 16: Planet carrier; 17: Planet gear; 18: First end; 19: Second end; 20: Third positioning block; 21: First locking structure; 22: Second locking structure; 23: Output shaft; 24: Intermediate gear; 25: Adjusting gear; 26: Adjusting nut; 27: Stud; 28: First positioning block; 29: Second positioning block; 30: Guide post; 31: Locking block; 32: Positioning tooth; 33: First guide groove; 34: Second guide groove; 35: Elastic member; 36: Driving shaft; 37: Central gear. Detailed implementation manners

[0041] To make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0042] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the embodiments of the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot 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 clearly specified and defined, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0044] In the embodiments of the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or simply means that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower horizontal height than the second feature.

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

[0046] The following will be combined with Figures 1-11 Describe the shift adjustment device 1 provided by the present invention.

[0047] To solve the problems in the traditional technology that the transmission of the antenna drive device is relatively complex, occupies a large position, and has a high cost. The present invention provides a shift adjustment device 1 and a base station antenna. Since the main inventive point of the present invention lies in the shift adjustment device 1, the relevant structures of the base station antenna will not be described in detail hereinafter.

[0048] The present invention provides a shift adjustment device 1, including: a mounting base 2, the mounting base 2 has a mounting cavity 6, and a plurality of output members are provided in the mounting cavity 6. Each output member is used to form a gear position respectively, and controlling the movement of one output member controls the output of the corresponding gear position; a shift mechanism 3, including a planetary support 16 and a planetary gear 17 provided in the mounting cavity 6. The planetary support 16 has a first end 18 and a second end 19. The planetary gear 17 is provided at the second end 19. The planetary gear 17 has a revolution movement stroke around the first end 18 and a rotation movement stroke around its own axis. The planetary gear 17 will correspond to the output members respectively during the revolution movement stroke. Therefore, the revolution movement stroke of the planetary gear 17 is used to switch and select the corresponding output member, and the rotation movement stroke of the planetary gear 17 can drive the corresponding output member to move, that is, drive the output of the corresponding gear position;

[0049] A locking mechanism 4, including a first locking structure 21 and a second locking structure 22 movably provided on the mounting base 2. The first locking structure 21 corresponds to the planetary support 16 and is used to lock the planetary support 16. The second locking structure 22 corresponds to each output member and is used to lock the movement of each output member; a driving mechanism 5, provided on the mounting base 2, and is used to drive the shift mechanism 3 to move.

[0050] For the shift adjustment device 1 provided by the present invention, since the planetary gear 17 has both a revolution movement stroke and a rotation movement stroke during the movement process, first use the second locking structure 22 to lock the movement of the output member, then the planetary gear 17 can select the corresponding output member during the revolution movement stroke and will not cause the movement of the output member during the movement process, thereby completing the selection of the gear position; when the planetary gear 17 selects the corresponding output member, that is, the corresponding gear position, then use the first locking structure 21 to lock the planetary support 16, that is, the revolution movement stroke of the planetary gear 17 can be restricted, so that the rotation movement stroke of the planetary gear 17 can drive the corresponding output member to move, thereby completing the output of the selected gear position. The shift adjustment device 1 provided by the present invention has a compact structure. Through the cooperation of the shift mechanism 3, the locking mechanism 4 and the driving mechanism 5, multiple groups of power can be selectively output, realizing the miniaturization of the shift adjustment device 1 and reducing the cost.

[0051] Specifically, the driving mechanism 5 includes a driving shaft 36 and a central gear 37, and reference can be made to Figures 1-2, the drive shaft 36 is inserted into the installation cavity 6, with part located inside the installation cavity 6 and part outside the installation cavity 6. The central gear 37 is provided at the first end 18. The part of the drive shaft 36 located inside the installation cavity 6 passes through the first end 18 and is drivingly connected to the central gear 37, and the central gear 37 is also meshingly connected to the planetary gear 17. It can be understood that the drive shaft 36 can be driven to rotate by a motor, and the drive shaft 36 thus drives the central gear 37 to rotate, and further drives the planetary gear 17 to rotate. Since the first end 18 of the planetary carrier 16 is rotatably connected to the drive shaft 36, the planetary gear 17 has the above-mentioned revolution movement stroke and rotation movement stroke under the driving action of the central gear 37.

[0052] Furthermore, the installation cavity 6 has a first cover body 7 and a second cover body 8 oppositely arranged in the height direction. The output member includes output gear shafts 10 annularly distributed in the installation cavity 6. One end of the output gear shaft 10 is connected to the first cover body 7, and the other end is connected to the second cover body 8. The output gear shaft 10 is a long gear, and it can selectively mesh with a plurality of other components in the length direction; the first locking structure 21 includes an output shaft 23, a transition gear 24, an adjustment gear 25, and an adjustment nut 26 provided outside the installation cavity 6. The output shaft 23 is drivingly connected to the transition gear 24. The transition gear 24 is movably sleeved on the drive shaft 36 and is meshingly connected to the adjustment gear 25; a stud 27 is provided on the adjustment gear 25, and the adjustment nut 26 is threadedly connected to the stud 27 to have a movement stroke along the axial direction of the stud 27. A guide hole 11 is provided on the first cover body 7, and the adjustment nut 26 is used to extend into the installation cavity 6 along the guide hole 11 during the movement stroke to abut against and lock the planetary carrier 16.

[0053] It should be noted that by drivingly connecting the output shaft 23 with a motor, the transition gear 24 can be driven to rotate. The output shaft 23 and the drive shaft 36 are arranged in parallel. The transition gear 24 then drives the adjustment gear 25 to rotate; a stud 27 is provided on the adjustment gear 25. The adjustment nut 26 threadedly connected to the stud 27 and the stud 27 together form a lead screw-nut structure. While the adjustment gear 25 rotates, the adjustment nut 26 will rise or fall along the stud 27. When the adjustment nut 26 rises along the stud 27, the adjustment nut 26 is arranged away from the planetary carrier 16. When the adjustment nut 26 falls along the stud 27, the adjustment nut 26 approaches the planetary carrier 16 and has an abutting effect on the planetary carrier 16, so that the planetary carrier 16 can be locked, and the planetary gear 17 cannot perform the revolution movement stroke and can only perform the rotation movement stroke.

[0054] Specifically, the adjusting nut 26 has a plurality of guide posts 30. The guide posts 30 are annularly distributed, and the distribution radius of each guide post 30 is equal to the circumferential radius of the planetary gear 17. A plurality of guide holes 11 are provided on the first cover body 7. The guide holes 11 are correspondingly arranged with the guide posts 30. Each guide post 30 is used to extend into the installation cavity 6 along the corresponding guide hole 11 to abut against and lock the second end 19 of the planetary bracket 16. It should be noted that the planetary bracket 16 rotates around the first end 18 with the connection line between the first end 18 and the second end 19 as the radius. The connection line between the first end 18 and the second end 19 is the circumferential radius of the planetary gear 17. Therefore, referring to the attached drawings, the guide posts 30 are annularly distributed, and the distribution radius of the guide posts 30 is equal to the circumferential radius of the planetary gear 17. Therefore, it can be ensured that no matter which position the planetary gear 17 rotates to, there is always a guide post 30 corresponding to it, which can press and lock it.

[0055] In addition, as described above, a plurality of guide holes 11 are provided on the first cover body 7. The guide posts 30 are initially arranged away from the guide holes 11. When the adjusting nut 26 is driven to move, the guide posts 30 will extend into the guide holes 11 to press against the second end 19 of the planetary bracket 16. In the technical solution provided by the present invention, the surface of the second end 19 can be smooth. The guide post 30 applies sufficient pressure to the second end 19 to hold it in place and prevent it from moving. Of course, in this case, another component is required on the other side of the second end 19, such as the second cover body 8 or other components arranged opposite to the guide post 30. In this way, the guide post 30 and the other component can together limit the movement of the second end 19. There is also a case where there is a positioning groove on the surface of the second end 19. The guide post 30 can be inserted into the positioning groove and apply appropriate pressure to the second end 19. Since the guide post 30 is fixed, the second end 19 is pulled by the guide post 30 and cannot move either. In this way, no other component on the other side of the second end 19 needs to cooperate with the guide post 30, and the guide post 30 does not need to apply a large pressure either, and can also lock the second end 19.

[0056] As described above, in the initial stage, the adjusting nut 26 is arranged away from the planetary bracket 16. Therefore, in the technical solution provided by the present invention, a first positioning block 28 is provided on the adjusting gear 25, and a second positioning block 29 is correspondingly provided on the adjusting nut 26. When the first positioning block 28 abuts against the second positioning block 29, it represents the zero position state of the motor controlling the output shaft 23. In this state, the planetary bracket 16 is not locked. At this time, by experimentally designing the rotation speed or rotation time of the motor, it can be determined under what circumstances the guide post 30 will abut against the planetary bracket 16. In this way, through a simple structural setting, the effect of accurately controlling the locking of the adjusting nut 26 to the planetary bracket 16 can be achieved.

[0057] Further, there are a plurality of second locking structures 22, and the second locking structures 22 are annularly distributed and respectively correspond to the output gear shafts 10; the second locking structure 22 includes a locking block 31 and an elastic member 35 provided on the locking block 31. One end of the elastic member 35 abuts against the locking block 31, and the other end abuts against the second cover body 8; when the elastic member 35 is in the initial state, the corresponding locking blocks 31 are all meshed with the corresponding output gear shafts 10 to lock the corresponding output gear shafts 10. When the elastic member 35 is in the compressed state, the corresponding locking blocks 31 are separated from the corresponding output gear shafts 10. It should be noted that the locking block 31 is provided with positioning teeth 32 for meshing with the output gear shaft 10, and one locking block 31 corresponds to one output gear shaft 10. Since the elastic member 35 is provided on the locking block 31, when the elastic member 35 is not compressed, the positioning teeth 32 are meshed with the output gear shaft 10 to lock the movement of the output gear shaft 10; when the elastic member 35 is compressed, the positioning teeth 32 move in the direction close to the second cover body 8 to disengage from the output gear shaft 10, so that the output gear shaft 10 can rotate freely.

[0058] In addition, the locking blocks 31 are annularly distributed, so the second ends 19 will respectively correspond to the locking blocks 31 during rotation. As mentioned above, the second ends 19 will be pressed by the guide posts 30, so the second ends 19 can drive the corresponding elastic members 35 to deform when abutted by the adjusting nut 26. It can be understood that during actual use, first use the drive shaft 36 to drive the central gear 37 to rotate, driving the planetary gear 17 to rotate. At this time, the planetary gear 17 performs both a revolution motion stroke and a rotation motion stroke, and the output gear shafts 10 are locked by the locking blocks 31 and will not be driven by the planetary gear 17; when the planetary gear 17 moves to the selected output gear shaft 10, that is, the corresponding gear position, the drive output shaft 23 rotates to drive the adjusting nut 26 to move in the direction close to the planetary carrier 16. At this time, the planetary carrier 16 is locked, and the planetary gear 17 only rotates. At the same time, under the pressing action of the planetary carrier 16, the selected output gear shaft 10 is unlocked and will be driven by the planetary gear 17 to rotate, thus completing the output of the corresponding gear position.

[0059] Further, a seat body 13 is provided on the side of the second cover body 8 facing the installation cavity 6. A slot 14 is provided on the circumferential side of the seat body 13, and each locking block 31 is movably inserted into the slot 14, that is, each locking block 31 cannot move circumferentially and can move vertically. To further improve the movement stability of each locking block 31, a plurality of positioning posts 15 are further provided at one end of the second cover body 8 facing the installation cavity 6, and a plurality of first guide grooves 33 are provided on each locking block 31, and each first guide groove 33 is slidably clamped corresponding to each positioning post 15. For reference Figure 11, a circular hole-shaped first guide groove 33 is provided in the middle of the locking block 31, and a cylindrical positioning post 15 is correspondingly provided on the second seat body 13. The two are slidably connected to guide the movement of the locking block 31; an arc-shaped first guide groove 33 is also provided at the edge of the locking block 31, and a small cylindrical positioning post 15 is correspondingly provided on the second seat body 13. The two are slidably abutted, which also plays a guiding role in the movement of the locking block 31, making the movement of the locking block 31 more stable. In addition, a second guide groove 34 is provided on the locking block 31. The second guide groove 34 is arc-shaped and is used for slidably engaging with the output shaft 23 of the output gear shaft 10 to guide the movement of the locking block 31.

[0060] The shift adjustment device 1 provided by the present invention is provided with a planetary gear 17. Although the present invention provides a plurality of output gear shafts 10 arranged in a circumferential shape, there are gaps between the output gear shafts 10, so the movement of the planetary gear 17 may be derailed. Therefore, in the technical solution provided by the present invention, a transition column 9 is provided between two adjacent output gear shafts 10. The transition column 9 extends along the length direction of the output gear shaft 10. In this way, a complete tooth ring can be formed between the transition column 9 and the tooth blocks of the output gear shaft 10 to prevent the planetary gear 17 from moving off track and making the movement of the planetary gear 17 more stable.

[0061] As described above, during the revolution travel of the planetary gear 17, a specific output gear shaft 10, that is, a specific gear position, needs to be selected. In the technical solution provided by the present invention, a third positioning block 20 protrudes from the second end 19, and a fourth positioning block 12 is provided on the side of the first cover body 7 facing the installation cavity 6. The third positioning block 20 will not be blocked during normal rotation and will be blocked by the fourth positioning block 12 when it rotates to the fourth positioning block 12. The position where the third positioning block 20 and the fourth positioning block 12 are in contact can be called the zero position. When the motor drives the drive shaft 36 to rotate, the initial position of the motor can be determined by identifying this zero position, and then by determining the rotation time or the number of turns of the motor, the position of the planetary gear 17, that is, the selected gear position of the planetary gear 17, can be determined.

[0062] The present invention also provides a base station antenna, including the above shift adjustment device 1. Since the shift adjustment device 1 is the main inventive point of the present invention, the structure of the base station antenna will not be described in detail in the present invention.

[0063] The usage method of the shift adjustment device 1 will be briefly described as follows: First, drive the drive shaft 36 to rotate forward or backward, which can drive the central gear 37 to rotate, and drive the planetary gear 17 to revolve around the drive shaft 36, so that the planetary gear 17 moves to mesh with the gear of the first target output gear shaft 10; then drive the output shaft 23 to rotate forward or backward, sequentially drive the intermediate gear 24 and the adjustment gear 25 to rotate, and make the adjustment gear 25 drive the adjustment nut 26 to move linearly along the stud 27, so that the guide post 30 of the adjustment nut 26 penetrates to the second end 19, the planetary carrier 16 is in a locked and non-rotatable state, and at the same time, sequentially press the planetary gear 17, the locking block 31 and the elastic member 35, the elastic member 35 is in a compressed state, and the positioning teeth 32 of the locked and pressed locking block 31 are disengaged from the gear of the first target output gear shaft 10, and the first target output gear shaft 10 is in a rotatable state; drive the drive shaft 36 to rotate forward or backward again, which can sequentially drive the central gear 37, the planetary gear 17 and the first target output gear shaft 10 to rotate forward or backward correspondingly, and provide a forward or backward driving force for the components connected to the first target output gear shaft 10. Therefore, the direction adjustment of the phase of the first target phase shifter is realized;

[0064] After the direction adjustment of the phase of the first target phase shifter is completed, drive the output shaft 23 to rotate forward or backward again, sequentially drive the intermediate gear 24 and the adjustment gear 25 to rotate, make the adjustment gear 25 drive the adjustment nut 26 to move linearly along the stud 27, so that the guide post 30 disengages from the second end of the planetary carrier 16, the planetary carrier 16 is in a rotatable state, and at the same time, the pressed planetary gear 17, the locking block 31 and the elastic member 35 lose the pressing force, the elastic member 35 is in a non-compressed state, the positioning teeth 32 of the locking block 31 are disengaged from the gear of the first target output gear shaft 10, the first target output gear shaft 10 is in a fixed state, and the shift adjustment device 1 returns to the initial state;

[0065] And so on, the forward or backward adjustment of all output gear shafts 10 can be realized, and then the adjustment of all phase shifters can be realized, so as to achieve the purpose of adjusting multiple antenna phase shifters by using two power sources.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A shift adjustment device, characterized in that, Comprising: A mounting base having a mounting cavity, in which a plurality of output members are provided, and each output member is used to form a gear position respectively; A shifting mechanism including a planet carrier and planet gears provided in the mounting cavity. The planet carrier has a first end and a second end, and the planet gears are provided at the second end. The planet gears have a revolution movement stroke around the first end and a rotation movement stroke around their own axes. The revolution movement stroke of the planet gears is used to switch and select the corresponding output members, and the rotation movement stroke of the planet gears is used to drive the corresponding output members to move; A locking mechanism including a first locking structure and a second locking structure movably provided on the mounting base. The first locking structure corresponds to the planet carrier and is used to lock the planet carrier. The second locking structure corresponds to each output member and is used to lock the movement of each output member; A driving mechanism provided on the mounting base and used to drive the shifting mechanism to move. The driving mechanism includes a driving shaft and a central gear. The central gear is provided at the first end. The part of the driving shaft located in the mounting cavity passes through the first end and is drivingly connected to the central gear. The central gear is meshed with the planet gears and is used to drive the planet gears to rotate; Wherein, the mounting cavity has a first cover body and a second cover body oppositely arranged in the height direction. The output members include output gear shafts annularly distributed in the mounting cavity. One end of the output gear shaft is connected to the first cover body, and the other end is connected to the second cover body; The first locking structure includes an output shaft, an intermediate gear, an adjusting gear and an adjusting nut provided outside the mounting cavity. The output shaft is drivingly connected to the intermediate gear. The intermediate gear is movably sleeved on the driving shaft and is meshed with the adjusting gear; The adjusting gear is provided with a stud, and the adjusting nut is threadedly connected to the stud to have a movement stroke along the axial direction of the stud. The first cover body is provided with a guiding hole, and the adjusting nut is used to extend into the mounting cavity along the guiding hole during the movement stroke to abut against and lock the planet carrier.

2. The shift adjustment device according to claim 1, characterized in that The adjusting nut has a plurality of guiding columns, and the guiding columns are annularly distributed, and the distribution radius of each guiding column is equal to the circumferential radius of the planet gears; The first cover body is provided with a plurality of the guiding holes, and each guiding hole is correspondingly arranged with each guiding column. Each guiding column is used to extend into the mounting cavity along the corresponding guiding hole to abut against and lock the second end.

3. The shift adjustment device according to claim 2, characterized in that, The adjusting gear is provided with a first positioning block, and the adjusting nut is correspondingly provided with a second positioning block. When the first positioning block abuts against the second positioning block, each guiding column is arranged away from the second end.

4. The shift adjustment device according to claim 2, wherein There are a plurality of the second locking structures, and the second locking structures are annularly distributed and respectively correspond to the output gear shafts; The second locking structure includes a locking block and an elastic member provided on the locking block. One end of the elastic member abuts against the locking block, and the other end abuts against the second cover body. When the elastic member is in the initial state, the corresponding locking blocks are all engaged with the corresponding output gear shafts to lock the corresponding output gear shafts. When the elastic member is in the compressed state, the corresponding locking blocks are separated from the corresponding output gear shafts. During the rotation process, the second end corresponds to each of the locking blocks, and the second end is used to drive the corresponding elastic member to deform when abutted by the adjusting nut.

5. The shift adjustment device according to claim 4, characterized in that, A seat body is provided on one side of the second cover body facing the installation cavity. Slots are provided on the circumferential side of the seat body, and each of the locking blocks is movably inserted into each of the slots. The locking block has positioning teeth, and the positioning teeth are used to engage with the output gear shaft.

6. The shift adjustment device according to claim 5, characterized in that, One end of the second cover body facing the installation cavity is further provided with a plurality of positioning posts. A plurality of first guiding grooves are provided on each of the locking blocks, and each of the first guiding grooves is slidably clamped corresponding to each of the positioning posts. Each of the locking blocks is further provided with a second guiding groove, and each of the second guiding grooves is used to slidably clamp with the output shaft of the output gear shaft. Both the first guiding groove and the second guiding groove are used to guide the movement of the locking block.

7. The shift adjustment device according to claim 1, wherein A transition post is provided between two adjacent output gear shafts. The transition post extends along the length direction of the output gear shaft, and the tooth blocks of each of the transition posts and each of the output gear shafts are used to form a toothed ring.

8. The shift adjustment device according to claim 1, characterized in that A third positioning block protrudes from the second end. A fourth positioning block is provided on one side of the first cover body facing the installation cavity. The third positioning block selectively abuts against the fourth positioning block during the rotational movement stroke.

9. A base station antenna, characterized in that, It includes the shift adjustment device according to any one of claims 1-8.

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