CN109216925B - Transmission device for electric downtilt angle adjustment of antenna - Google Patents
Transmission device for electric downtilt angle adjustment of antenna Download PDFInfo
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- CN109216925B CN109216925B CN201811182640.3A CN201811182640A CN109216925B CN 109216925 B CN109216925 B CN 109216925B CN 201811182640 A CN201811182640 A CN 201811182640A CN 109216925 B CN109216925 B CN 109216925B
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- position selecting
- input shaft
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
- H01Q3/32—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by mechanical means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a transmission device for adjusting an electric downtilt angle of an antenna, which is characterized by comprising a position selection transmission assembly, a screw transmission assembly and a pull rod, wherein the position selection transmission assembly is connected with an electric adjustment controller; the position selecting transmission assembly comprises a connecting shaft sleeve, a front shell, a position selecting internal gear, a position selecting component, a positioning sensor, a fixed ring, a damping block, a transmission screw and a rear shell; the position selecting part is provided with an input shaft and a gear transmission mechanism, the electric adjustment controller is connected with the input shaft through a connecting shaft sleeve, the position selecting internal gear is arranged on the input shaft and is connected with the gear transmission mechanism of the position selecting part, the front end and the rear end of the position selecting part are respectively provided with a one-way valve, and a screw connecting piece is movably sleeved on the transmission screw. The invention has the advantages of simple structure, low cost, light weight, small volume and convenient batch manufacture.
Description
Technical Field
The invention relates to the technical field of antenna equipment, in particular to an electric downtilt angle adjusting transmission device for an electric adjusting antenna in a mobile communication base station antenna.
Background
In the current mobile communication system, the electric downtilt angle of the radiation surface of the electrically-tunable antenna is correspondingly adjusted according to the phase change of the radiation unit of the antenna. The phase shifter in the antenna is driven by the transmission device to change the phase and amplitude of each radiation unit, so that the parameters such as the phase, horizontal component, vertical component amplitude and the like of the antenna are changed, and the effect of changing the coverage area is achieved. The electric tuning antenna realizes the automatic control of the electric downtilt angle of the antenna through the remote operation of the electric tuning controller unit and the mechanical transmission device. In conventional control systems, there are two general ways to control the adjustment of the phase shifters, the first one, different phase shifters are respectively controlled by driving motors in corresponding electrically controlled controllers, each group of phase shifters needs a motor to provide power, and the motor torque is converted into a motion form by a set of transmission structural members to adjust the phase shifters. When the multi-frequency multi-channel antenna is required to be arranged, the transmission structure of the dual-frequency multi-channel antenna is overlapped with that of a single-frequency single-channel antenna, namely, one group of phase shifters are independently controlled by one motor, and for the multi-frequency multi-channel antenna, the electric control controllers of a plurality of motors are required to be configured to realize independent adjustment of a plurality of groups of phase shifters; a still further class is that the selection of the transmission structure of each set of phase shifters is accomplished by a dual motor, wherein 1 motor (the selector) and wherein the other motor transfers motion to the transmission structure that has accomplished the selector. The first mode increases the volume and cost of the antenna due to the high price and large volume of the motor, and has the defects of complex structure, inconvenient production and the like; in the second mode, although the number of motors is effectively reduced, the transmission device is complex in structure, complex in operation and low in adjustment efficiency.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides the transmission device for the electric downtilt angle adjustment of the antenna, which has the advantages of simple structure, convenient manufacture, low cost, small volume and reliable quality.
The invention adopts the following technical proposal to realize the aim: the transmission device for the electric downtilt angle adjustment of the antenna is characterized by comprising a position selection transmission assembly, a screw transmission assembly and a pull rod, wherein the position selection transmission assembly is connected with an electric adjustment controller, the screw transmission assembly is connected with a phase shifter through the pull rod, and comprises a plurality of transmission screws and transmission screw gears arranged on the transmission screws;
the position selecting transmission assembly comprises a connecting shaft sleeve, a front shell, a position selecting internal gear, a position selecting component, a positioning sensor, a fixed ring, a damping block, a transmission screw and a rear shell; the position selecting component is provided with an input shaft and a gear transmission mechanism, the electric adjustment controller is connected with the input shaft through a connecting shaft sleeve, a position selecting internal gear is arranged on the input shaft and is connected with the gear transmission mechanism of the position selecting component, the front end and the rear end of the position selecting component are respectively provided with one-way valves, the motor rotary motion of the electric adjustment controller is transmitted through the position selecting component to complete position selecting of the transmission screw during forward rotation under the action of the front and rear two groups of one-way valves, the motion transmission of the position selecting component is completed during reverse rotation to output the motion of the transmission screw, a screw connecting piece is movably sleeved on the transmission screw, the rotary motion is converted into linear motion through the spiral cooperation of the screw connecting piece and the transmission screw, and the pull rod is connected with the screw connecting piece, so that the phase shifter is driven to carry out phase adjustment, and the electric downtilt angle change of the antenna is completed.
As a further explanation of the above scheme, the gear transmission mechanism comprises a planetary gear, an inner gear, an outer gear, a transmission main gear, a driven gear and a sun gear, wherein the transmission main gear is arranged on the input shaft and meshed with the inner gear and the outer gear, and the inner gear of the inner gear and the outer gear are meshed with the planetary gear;
the sun gear comprises a sun gear fixing shaft and a sun gear idler wheel and a sun gear position selecting gear which are arranged on the sun gear fixing shaft, the planet gear is meshed with the sun gear position selecting gear, the sun gear position selecting gear is meshed with an inner gear ring of a position selecting inner gear, the position selecting inner gear is in a stop state due to the restraining effect of a front one-way valve, and then the whole position selecting part is driven to do reverse motion along the inner gear ring of the position selecting inner gear, so that a driven gear in the position selecting part or the sun gear idler wheel on the sun gear is meshed with a transmission gear on a transmission screw.
Further, the front shell and the rear shell are combined to form an internal cavity structure, the inside of the cavity is a closed space, and the compression spring, the one-way valve, the position selecting internal gear, the position selecting component, the positioning sensor, the fixing ring, the damping block and the transmission screw are all arranged in the cavity, and the mutual transmission fit is the fit of gear and gear engagement or shaft and shaft sleeve.
Further, the one-way valve and the pressure spring sleeve are arranged on the input shaft, wherein one-way valve makes linear motion along the axial direction of the input shaft by utilizing the telescopic action of the pressure spring and is used for finishing the position selecting state control of the position selecting component, and the other one-way valve makes linear motion along the axial direction of the input shaft by utilizing the telescopic action of the pressure spring and is used for finishing the output transmission state control of the position selecting component.
Further, the damping block is arranged on the driving screw, has an inhibiting effect on the inertial rotation of the driving screw caused by the position selecting component in the position selecting action, and prevents the positioning error of the moving driving screw caused by other parts.
Further, the number of the phase shifters is multiple, each phase shifter is connected with the pull rod through a phase shifter connecting mechanism, and the motion output of the transmission screw corresponds to each phase shifter to be adjusted.
Further, front and rear limiting sleeves are respectively arranged at two ends of the transmission screw, and the pull rod connecting piece is sleeved on the transmission screw and is arranged between the front and rear limiting sleeves; the driving screw is provided with a guide shaft in parallel outside, and the pull rod connecting piece is provided with a guide hole corresponding to the guide shaft.
The beneficial effects achieved by adopting the technical proposal of the invention are as follows:
1. the invention adopts the electric modulation controller of 1 motor to drive, effectively reduces the number of motors, can control 1 group to a plurality of groups of phase shifters, adopts a multi-part assembly structure, has compact structure, low cost and convenient production.
2. The invention carries out structural cooperation on the forward (or reverse) rotary motion of the motor aiming at the transmission screws with different numbers and positions, and completes the selection of the transmission screws (1 screw corresponds to a group of phase shifters) which need to be adjusted. The reverse (or forward) rotary motion of the motor is decomposed into bidirectional rotary motion by utilizing a mechanical transmission principle, and the selected transmission screw can be subjected to forward rotation and reverse rotation to finish transmission output; according to the practice, compared with the double-motor bidirectional rotary motion technology adopted by the conventional transmission device, the single-motor bidirectional rotary motion structure saves the space on the back of the antenna, reduces the occupation of the width space of the antenna, effectively facilitates the layout of the back device of the antenna, further improves the reliability of the quality of the antenna and reduces the manufacturing cost of the antenna.
3. The transmission screw structure adopts a mode of annular uniform distribution, the position selecting components are arranged in the center, the number of the transmission screws is increased to control more groups of phase shifters, the phase shifter is not limited by the number of phase shifter components, the quality is reliable, and the product application range is wide.
Drawings
FIG. 1 is a schematic diagram of an electrical downtilt actuator for an electrically tunable antenna according to an embodiment of the present invention;
FIG. 2 is a perspective view of an electrical downtilt actuator for an electrically tunable antenna according to an embodiment of the present invention;
FIG. 3 is an exploded view of an electrical downtilt actuator for an electrically tunable antenna according to an embodiment of the present invention;
fig. 4 and fig. 5 are internal views of different viewing angles of an electric downtilt transmission device of an electric tilt antenna according to an embodiment of the present invention;
FIG. 6 is an exploded view of a selector member in accordance with an embodiment of the present invention;
FIG. 7 is a block diagram of an input shaft according to an embodiment of the present invention;
fig. 8 is a rear cavity block diagram of an embodiment of the present invention.
Reference numerals illustrate:
1. the gear selecting transmission part, the screw transmission part, the pull rod, the phase shifter, the electric regulating controller (single motor), the connecting shaft sleeve, the front shell, the pressure spring, the one-way valve, the gear selecting internal gear and the gear selecting internal gear are arranged in sequence, 15, a position selecting part, 16, a fixed ring, 17, a damping block, 18, a driving screw, 19, a rear shell, 21, a gasket, 22, a clamp spring, 23, a front limiting sleeve, 24, a screw connecting piece, 25, a guide shaft, 26, rear stop collar, 27, fixed seat, 111, front shell compression spring shaft, 112, front input shaft sleeve, 113, front shell check valve shaft sleeve, 114, front shell mounting post, 115, positioning sensor fixing post, 131, compression spring sleeve, 132, check valve teeth, 141, ring gear check valve teeth, 142, ring gear shaft sleeve, 143, ring gear, 151, front cover plate, 152, input shaft, 153, planetary gear, 154, inner and outer gears, 155, drive main gear, 156, driven gear, 157, planet carrier, 158, sun gear, 159, rear cavity, 161, fixed bore, 162, drive gear shaft, 181, drive gear shaft, 182, 183, drive screw, 184, screw shaft, 191, rear housing mounting post, 192, fixed ring mounting post, 193, rear housing one-way valve sleeve, 194, drive screw bore, 195, rear input sleeve, 196, rear housing pressure spring shaft, 1511, sun gear bore, 1512, front cover plate input sleeve, 1513, front cover plate fixing post, 1514, driven gear sleeve, 1515, positioning sensing position, 1521, input fixing shaft, 1522, driving gear fixing shaft, 1523, inner gear fixing base, 1524, one-way valve fixing shaft, 1525, front housing fixing shaft, 1526, connecting sleeve fixing position, 1527, connecting sleeve fixing bore, 1541, outer gear, 1542, inner gear, 1581, 1582. sun gear idler 1583 sun gear, 1591 rear cavity gear sleeve, 1592 rear cavity fixed hole, 1593 rear cavity input sleeve, 1594 rear cavity check valve tooth.
Detailed Description
The present technical solution is described in detail below with reference to specific embodiments.
Referring to fig. 1, 2 and 3, the invention relates to a transmission device for adjusting an electric downtilt angle of an antenna, and an application scheme of the transmission device mainly comprises the following steps: a position selecting transmission part 1, a screw transmission part 2, a pull rod 3, a phase shifter 4 and an electric adjustment controller 5. The motor of the electric control device 5 outputs forward (or reverse) rotary motion to the position selecting transmission part 1 to finish the position selecting of a certain transmission screw 18 in the screw transmission part 2, and the motor of the electric control device 5 outputs reverse (or forward) rotary motion to the position selecting transmission part 1 to finish the motion transmission of the transmission screw 18 which has been selected in the screw transmission part 2, wherein the transmission screw 18 drives the corresponding phase shifter 4 to finish the adjustment through the movement of the pull rod 3.
The specific method comprises the following steps:
referring to fig. 3, 4, 5, and 6, the electric controller 5 transmits a forward rotation motion of the motor to the input shaft 152 through the connection sleeve 10, and the main gear 155 mounted on the input shaft 152 is rotated in reverse by the inner and outer gears 154 by meshing with the outer gear 1541 of the inner and outer gears 154; the inner gear 1542 of the inner and outer gears 154 meshes with 2 planetary gears 153, and the planetary gears 153 continue to rotate in reverse; the 2 planet gears 153 mesh with a sun gear selector 1583 on a sun gear 158, and the sun gear 158 will rotate in a forward direction; the sun gear selecting gear 1583 of the sun gear 158 is meshed with the inner gear ring 143 of the selecting inner gear 14, the selecting inner gear 14 is in a stop state due to the restraining effect of the front check valve 13, and then the whole selecting part 15 is driven to do reverse motion along the inner gear ring 143 of the selecting inner gear 14, so that the driven gear 156 in the selecting part 15 or the sun gear idler 1582 on the sun gear 158 is meshed with the transmission gear 182 on the transmission screw 18, and the driven gear 156 can be driven to complete meshing with the transmission gear 182 on the transmission screw 18 at the designated position through the parameter control of the electric controller 5, and the state is the selecting state. At the same point in time, only one of the drive screws 18 can be selected. According to different preset parameters of the electric adjustment controller, any one drive screw 18 can be selected.
Referring to fig. 3, 4, 5, and 6, the electric controller 5 transmits a reverse rotation motion of the motor to the input shaft 152 through the connection sleeve 10, and the main gear 155 mounted on the input shaft 152 rotates in a forward direction by meshing with the external gear 1541 of the internal and external gears 154; the inner gear 1542 of the inner and outer gears 154 engages 2 planetary gears 153, and the planetary gears 153 continue to rotate in the forward direction; the 2 planet gears 153 mesh with the sun gear selector 1583 on the sun gear 158, and the sun gear 158 will reverse rotation; the sun gear idler 1582 on the sun gear 158 is meshed with the transmission gear 182 on the transmission screw 18 of which the position is selected in the previous step, so that the transmission screw 18 is driven to do forward rotation (the position selecting part 15 is in a stop state due to the action of the rear one-way valve 13) and is in a transmission state at the moment; the above step is to select the gear 156 to be engaged with the drive gear 182 on the other drive screw 18, which is rotated in reverse, and is also in the drive state. Because of the angle difference between the position selecting part 15 and the driving screw 18 in assembly, only one driving screw 18 is meshed with the driven gear 156 at the same time, or one driving screw 18 is meshed with the sun gear idler 1582 to transmit the rotation motion input by the motor, so that independent adjustment of each driving screw 18 is ensured.
Referring to fig. 1, 2, 3, 4, and 5, the drive threads 183 of the drive screw 18 convert rotational motion to linear motion by the helical engagement of the screw connection 24. The phase of the phase shifter 4 is adjusted by connecting the pull rod 3 arranged on the screw connecting piece 24 to the corresponding phase shifter 4 so as to adjust the electric downtilt angle of the antenna.
Further, referring to fig. 3, 4, 5, 8, all of the drive screws 18 are installed in the corresponding drive screw holes 194 of the rear case 19, the damper block 17 is installed on the drive screws 18, and then the drive gear shafts 181 of the drive screws 18 are aligned with the drive gear shaft holes 162 of the retainer rings 16 and secured in the retainer ring mounting posts 192 of the rear case 19 through the retainer holes 161 of the retainer rings 16 using suitable fasteners. The screw shaft 184 of the drive screw 18 is fixed in the corresponding mounting hole of the fixing base 27.
Further, referring to fig. 3, 4, 5, 6, 7, and 8, the selected internal gear 14 is mounted on the internal gear fixing seat 1523 of the input shaft 152 through the ring gear sleeve 142; the front cover 151 is mounted on the drive gear stationary shaft 1522 of the input shaft 152 by a front cover input sleeve 1512; the drive main gear 155 is mounted on a drive gear stationary shaft 1522 of the input shaft 152; the driven gear 156 is installed in a corresponding rear cavity gear bushing 1591 on the driven gear bushing 1514 and the rear cavity 159 of the front cover plate 151 and is engaged with the driving main gear 155; the inner and outer gears 154 are installed between the front cover plate 151 and the planet carrier 157 and mesh with the driving main gear 155 through the outer gear 1541; the 2 planetary gears 153 are installed in the middle of the front cover plate 151 and the planet carrier 157 and meshed with the inner gear 1542 of the inner and outer gears 154 and the sun gear 1583 on the sun gear 158; the sun gear fixing shaft 1581 on the sun gear 158 is installed between the rear cavity input shaft sleeve 1593 of the rear cavity 159 and the positioning inner gear 14, and the sun gear positioning gear 1583 is meshed with the 2 planetary gears 153 and also meshed with the inner gear ring 143 of the positioning inner gear 14 through the sun gear hole 1511 of the front cover plate 151; the driving main gear 155, the driven gear 156, the planetary gears 153, the inner and outer gears 154, the planet carrier 157, and the sun gear 158 are mounted in engagement with each other in a cavity formed by combining the front cover plate 151 and the rear cavity 159, and are assembled with the rear cavity fixing holes 1592 of the rear cavity 159 through the front cover plate fixing posts 1513 of the front cover plate 151 using appropriate fasteners.
Further, referring to fig. 3, 4, 5, 6, 7 and 8, the previous compression spring 12 is installed in a cavity formed by the front case compression spring shaft 111 of the front case 11 and the compression spring sleeve 131 of the check valve 13; the previous one-way valve 13 is arranged in a cavity formed by the one-way valve shaft sleeve 113 of the front shell 11 and the one-way valve fixing shaft 1524 on the input shaft 152; under the action of the motor rotation motion, the front one-way valve 13 can be compressed forwards and rebound backwards by utilizing the inherent elasticity of the pressure spring 12; under the condition that the previous compression spring 12 is not compressed, the check valve teeth 132 are meshed with the annular gear check valve teeth 141 of the gear selector 14, and play a role in limiting and stopping; the input shaft 152 of the position selecting part 15 passes through the previous one-way valve 13 and the previous pressure spring 12, and is arranged in the front input shaft sleeve 112 of the front shell 11 by the front shell fixing shaft 1525 on the input shaft 152; the latter pressure spring 12 is arranged in a cavity formed by a rear shell pressure spring shaft 196 of the rear shell 19 and a pressure spring sleeve 131 of the latter one-way valve 13; the latter one-way valve 13 is mounted in a cavity formed by a rear housing one-way valve sleeve 193 of the rear housing 19 and a driving gear fixed shaft 1522 of the input shaft 152; under the action of the motor rotation motion, the back one-way valve 13 can compress backwards and rebound forwards by utilizing the inherent elasticity of the back pressure spring 12; under the condition of not compressing the latter pressure spring 12, the one-way valve teeth 132 are meshed with the rear cavity one-way valve teeth 1593 of the rear cavity 159, so as to play a role of limiting and stopping; the input stationary shaft 1521 on the input shaft 152 of the selector member 15 fits within the rear input sleeve 195 of the rear housing 19.
Further, referring to fig. 3 and 5, the positioning sensor is divided into two parts, one part of which is not shown in the drawing is installed in the positioning sensing position 1515 on the front cover plate 151 of the position selecting part 15, and the other part of which is installed in the positioning sensor fixing post 115 of the front case 11. When the position selecting part rotates to select the position, the other half of the positioning sensor arranged on the positioning sensor fixing column 115 of the front shell 11 is sensed by the sensor arranged in the positioning sensor fixing column 115, the position is a position selecting calibration position, and the electric control controller 5 selects the position of the set parameters according to the position as a starting position.
Further, referring to fig. 3, 4, 5, 6, 7 and 8, the components related to the transmission positioning component 2.1-2.7 are all formed into a cavity by connecting a front shell mounting post 114 on the front shell 11 and a rear shell mounting post 191 on the rear shell 19, and are assembled into a whole by using a proper fastener; the coupling sleeve 10 is then mounted over the coupling sleeve mount 1526 and coupling sleeve mount holes 1527 of the input shaft 152 using suitable fasteners.
Further, referring to fig. 1, 2 and 3, a washer 21, a clamp spring 22, a front stop collar 23, a screw connector 24, a guide shaft 25 and a rear stop collar 26 are mounted on the drive screw 18, and then a fixing base 27 is mounted on the drive screw 18, and appropriate fasteners (not shown) are required for mounting the front stop collar 23 and the rear stop collar 26.
Compared with the prior art, the invention adopts the electric modulation controller for driving 1 motor, effectively reduces the number of motors, can control 1 group to a plurality of groups of phase shifters, adopts a multi-part assembly structure, has compact structure, low cost and convenient production.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and improvements could be made by those skilled in the art without departing from the inventive concept, which falls within the scope of the present invention.
Claims (5)
1. The transmission device for the electric downtilt angle adjustment of the antenna is characterized by comprising a position selection transmission assembly, a screw transmission assembly and a pull rod, wherein the position selection transmission assembly is connected with an electric adjustment controller, the screw transmission assembly is connected with a phase shifter through the pull rod, and comprises a plurality of transmission screws and transmission screw gears arranged on the transmission screws;
the position selecting transmission assembly comprises a connecting shaft sleeve, a front shell, a position selecting internal gear, a position selecting component, a positioning sensor, a fixed ring, a damping block, a transmission screw and a rear shell; the position selecting component is provided with an input shaft and a gear transmission mechanism, the electric adjustment controller is connected with the input shaft through a connecting shaft sleeve, a position selecting internal gear is arranged on the input shaft and is connected with the gear transmission mechanism of the position selecting component, the front end and the rear end of the position selecting component are respectively provided with a one-way valve, the motor rotary motion of the electric adjustment controller is transmitted through the motion of the position selecting component to finish position selecting of the transmission screw in forward rotation under the action of the front and rear two groups of one-way valves, the motion transmission of the position selecting component is performed to finish motion output of the transmission screw in reverse rotation, the transmission screw is movably sleeved with a screw connecting piece, the rotary motion is converted into linear motion through spiral matching of the screw connecting piece and the transmission screw, and the pull rod is connected with the screw connecting piece, so that the phase shifter is driven to perform phase adjustment, and the electric downward inclination angle change of the antenna is finished; the front shell and the rear shell are combined to form an internal cavity structure, the inside of the cavity is a closed space, and a pressure spring, a one-way valve, a position selecting internal gear, a position selecting component, a positioning sensor, a fixed ring, a damping block and a transmission screw are all arranged in the cavity, and the mutual transmission fit is the fit of gear and gear engagement or shaft and shaft sleeve; the one-way valve and the pressure spring sleeve are arranged on the input shaft, wherein one-way valve makes linear motion along the axial direction of the input shaft by utilizing the telescopic action of the pressure spring to complete the position selection state control of the position selection component, and the other one-way valve makes linear motion along the axial direction of the input shaft by utilizing the telescopic action of the pressure spring to complete the output transmission state control of the position selection component; the number of the phase shifters is multiple, each phase shifter is connected with the pull rod through a phase shifter connecting mechanism, and the motion output of the transmission screw corresponds to each phase shifter to be adjusted.
2. The transmission for electrical downtilt of an antenna according to claim 1, wherein the gear transmission comprises a planetary gear, an inner gear, an outer gear, a driving main gear, a driven gear, and a sun gear, the driving main gear being mounted on the input shaft in meshing engagement with the inner gear and the outer gear, the inner gear of the inner gear and the planetary gear being in meshing engagement.
3. The transmission device for electric downtilt adjustment of an antenna according to claim 2, wherein the sun gear comprises a sun gear fixed shaft and a sun gear idler wheel and a sun gear selecting gear which are arranged on the sun gear fixed shaft, the planet gear is meshed with the sun gear selecting gear, the sun gear selecting gear is meshed with an inner gear ring of a position selecting inner gear, the position selecting inner gear is in a stop state due to the restraining effect of a front one-way valve, and then the whole position selecting component is driven to do reverse motion along the inner gear ring of the position selecting inner gear, so that a driven gear in the position selecting component or the sun gear idler wheel on the sun gear is meshed with a transmission gear on a transmission screw.
4. The transmission for electric downtilt adjustment of an antenna according to claim 1, wherein the damping block is mounted on the drive screw and has a damping effect on inertial rotation of the drive screw caused by the selector member during the selector operation.
5. The transmission device for electric downtilt adjustment of an antenna according to claim 1, wherein the transmission screw is provided with a front limit sleeve and a rear limit sleeve at two ends thereof respectively, and the pull rod connecting piece is sleeved on the transmission screw and is arranged between the front limit sleeve and the rear limit sleeve; the driving screw is provided with a guide shaft in parallel outside, and the pull rod connecting piece is provided with a guide hole corresponding to the guide shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811182640.3A CN109216925B (en) | 2018-10-11 | 2018-10-11 | Transmission device for electric downtilt angle adjustment of antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811182640.3A CN109216925B (en) | 2018-10-11 | 2018-10-11 | Transmission device for electric downtilt angle adjustment of antenna |
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| Publication Number | Publication Date |
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| CN109216925A CN109216925A (en) | 2019-01-15 |
| CN109216925B true CN109216925B (en) | 2023-08-04 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113067153B (en) * | 2021-03-24 | 2022-02-08 | 广东博纬通信科技有限公司 | Rotation direction selectable control mechanism and antenna electric downtilt angle control device |
| CN113991302B (en) * | 2021-10-29 | 2022-06-07 | 广东博纬通信科技有限公司 | Antenna transmission device |
| CN114050415B (en) * | 2021-11-08 | 2022-08-05 | 中山市粤为科技有限公司 | Transmission device capable of selecting output shaft and antenna apparatus using the same |
| CN115693155A (en) * | 2022-11-01 | 2023-02-03 | 中兴通讯股份有限公司 | Transmission device and antenna system |
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