CN112283541A - Gear driving device and driving device of electrically tunable antenna - Google Patents

Gear driving device and driving device of electrically tunable antenna Download PDF

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Publication number
CN112283541A
CN112283541A CN202011197448.9A CN202011197448A CN112283541A CN 112283541 A CN112283541 A CN 112283541A CN 202011197448 A CN202011197448 A CN 202011197448A CN 112283541 A CN112283541 A CN 112283541A
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CN
China
Prior art keywords
gear
driving
clutch
driven
meshed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011197448.9A
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Chinese (zh)
Inventor
何海雁
黄潮生
刘培涛
段红彬
肖飞
潘培锋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Comba Telecom Technology Guangzhou Ltd
Jingxin RF Technology Guangzhou Co ltd
Original Assignee
Comba Telecom Technology Guangzhou Ltd
Jingxin RF Technology Guangzhou Co ltd
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Publication date
Application filed by Comba Telecom Technology Guangzhou Ltd, Jingxin RF Technology Guangzhou Co ltd filed Critical Comba Telecom Technology Guangzhou Ltd
Priority to CN202011197448.9A priority Critical patent/CN112283541A/en
Publication of CN112283541A publication Critical patent/CN112283541A/en
Pending legal-status Critical Current

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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
    • F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
    • F16M11/02—Heads
    • F16M11/18—Heads with mechanism for moving the apparatus relatively to the stand
    • 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
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D11/00—Clutches in which the members have interengaging parts
    • 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
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/002—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having teeth movable out of mesh
    • 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
    • F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
    • F16H3/02—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion
    • F16H3/20—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially using gears that can be moved out of gear
    • F16H3/34—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion without gears having orbital motion exclusively or essentially using gears that can be moved out of gear with gears shiftable otherwise than only axially
    • 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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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

The invention provides a gear driving device and a driving device of an electrically tunable antenna, comprising a reversing mechanism, a transmission mechanism and a switching mechanism; the reversing mechanism comprises a grooved wheel, a driving plate and a first driving input end; the transmission mechanism comprises a driving gear, a plurality of driven gears, a clutch gear and a second driving input end; the switching mechanism is used for enabling the clutch gear to enter a position meshed with the driving gear and one driven gear when the groove wheel is static and to be disengaged from the position meshed with the driving gear and the driven gear when the driving plate rotates; when the first driving input end drives the driving plate to rotate, the driving plate drives the grooved wheels and the clutch gears to rotate, the clutch gears are sequentially and respectively meshed with the driven gears under the control of the switching mechanism, and when the second driving input end drives the driving gear to rotate, the driving gear, the clutch gears and the driven gears are in meshed transmission; the device can accurately control the rotary power output by the driven gear, and is higher in precision and smaller in error when applied to a related adjusting or driving device.

Description

Gear driving device and driving device of electrically tunable antenna
Technical Field
The invention relates to the technical field of antennas, in particular to a gear driving device and a driving device of an electric tilt antenna.
Background
In a wireless communication system, a base station antenna is the interface between a transceiver and an external propagation medium. Under the condition that the physical position of a base station antenna is not changed, a phase shifter connected in the antenna through a transmission device is generally used through an electric control power output device, and the traditional mode of electrically changing the phase of the phase shifter is that each phase shifter adopts an independent phase adjusting device, the phase adjusting device substantially adjusts the downward inclination angle of the antenna, and the phase adjusting effect is achieved by adjusting the downward inclination angle of the antenna.
Because the existing base station mostly adopts a multi-frequency antenna integrating a plurality of frequency bands, the azimuth angles of all the frequency bands in the multi-frequency antenna need to use respective phase shifters, and the phase shifters of all the frequency bands in the antenna correspond to separate controllers, so that the number of the controllers in the antenna is too large, and the volumes of a transmission device and the antenna are increased, therefore, the phase adjusting or driving device of the existing electrically-tunable antenna is improved towards the direction of miniaturization and low cost, and the aim is to improve the level of compact structure of the electrically-tunable antenna. Most of the existing phase adjusting or driving devices use a multi-stage gear meshing transmission mode, and utilize the rotary power generated in one or more gear meshing transmission processes to be applied to adjustment or driving, but the transmission flexibility among the multi-stage gears is low, and the rotary power output by the gears is difficult to control accurately, and especially when the output rotary power is used for adjustment, the problem of insufficient adjustment accuracy occurs.
Disclosure of Invention
The invention aims to overcome at least one defect of the prior art, and provides a gear driving device and a driving device of an electrically tunable antenna, which are used for solving the problems of low transmission flexibility between stage gears and insufficient adjustment precision when the rotary power output by the gears is used for adjustment while realizing the miniaturization of the adjustment or driving device.
The technical scheme adopted by the invention is as follows:
a gear driving device comprises a reversing mechanism, a transmission mechanism and a switching mechanism; the reversing mechanism comprises a grooved wheel, a driving plate and a first driving input end; the grooved wheel and the driving plate are arranged in a manner of being tangent to each other in radius; the first driving input end is connected with the drive plate and used for driving the drive plate to rotate; the driving plate is used for being matched with the grooved wheel, and driving the grooved wheel to rotate by a second angle while the driving plate rotates by a first angle; the transmission mechanism comprises a driving gear, a plurality of driven gears, a clutch gear and a second driving input end; the driving gear and the grooved pulley are positioned on the same rotating shaft; the driven gears are uniformly distributed on the periphery of the driving gear; the clutch gear is connected with the grooved pulley and is used for being meshed with the driving gear and one driven gear; the second driving input end is connected with the driving gear and is used for driving the driving gear to rotate; the first driving input end is also used for driving the switching mechanism to control the clutch gear to enter or disengage from a position meshed with the driving gear and one driven gear; the switching mechanism is used for enabling the clutch gear to enter a position meshed with the driving gear and one driven gear when the groove wheel is static under the driving of the first driving input end, and enabling the clutch gear to be separated from the position meshed with the driving gear and the driven gear when the driving plate rotates; when the first driving input end drives the driving plate to rotate, the driving plate drives the grooved wheels and the clutch gears to rotate, the clutch gears are sequentially and respectively meshed with the driven gears under the control of the switching mechanism, and when the second driving input end drives the driving gear to rotate, the driving gear, the clutch gears and the driven gears are in meshing transmission.
The gear driving device provided by the invention generates rotary power through gear transmission in the transmission mechanism, and can further apply the generated rotary power to the related adjusting mechanism/device; specifically, the device of the invention changes the position of the clutch gear in the transmission mechanism through the reversing mechanism, controls the clutch gear to be sequentially meshed with each driven gear through the switching mechanism, thereby enabling different driven gears to generate rotary power so as to be applied to different adjusting modes, wherein, the first driving input end of the reversing mechanism is controlled to simultaneously drive the switching mechanism, the switching mechanism is specifically used for enabling the clutch gear not to be meshed with any other gear in the process of changing the position under the driving of the first driving input end, and can be meshed with other gears only when the position is changed, thereby ensuring that the clutch gear is not meshed with the driven gear in the process of changing the position (reversing along with a grooved wheel) so as to accurately control the rotary power output by the driven gear, and the precision is higher when the rotary power output by the driven gear is applied to related adjusting or driving mechanisms/devices, the error is smaller.
Further, a sliding shaft is arranged on the clutch gear and is connected with the grooved pulley through the sliding shaft; the switching mechanism is matched with the sliding shaft, so that the clutch gear enters a position meshed with the driving gear and one driven gear when the groove wheel is static, and is separated from the position meshed with the driving gear and the driven gear when the driving plate rotates.
The switching mechanism is matched with a sliding shaft arranged on the clutch gear, so that the clutch gear is controlled to enter or be separated from a meshing position, the clutch gear is provided with the sliding shaft so that the clutch gear has a sliding degree of freedom, and the clutch gear can slide along the direction of the sliding shaft and accurately enter or be separated from the position meshed with the main gear and the auxiliary gear.
Further, the switching mechanism comprises a plurality of gears meshed with each other; the surface of one gear is provided with a pushing component which is used for pushing the sliding shaft when the sheave is static so that the clutch gear enters a position meshed with the driving gear and one driven gear; the other gear is used for rotating with the driving plate under the driving of the first driving input end, and the whole switching mechanism is in meshing transmission when the other gear rotates, so that the pushing component stops pushing the sliding shaft when the driving plate rotates, and the clutch gear is separated from the position meshed with the driving gear and the driven gear.
The switching mechanism is composed of gear sets which are meshed with each other, a pushing component is arranged on the surface of one gear, the pushing component is utilized to push a sliding rod connected with the clutch gear when the grooved wheel and the clutch gear are static, so that the clutch gear enters a position meshed with the main gear and the auxiliary gear, when the clutch gear needs reversing, the other gear is driven by the first driving input end to rotate along with the driving plate, the whole gear set is meshed for transmission, the gear provided with the pushing component also rotates, the pushing component does not push the sliding shaft any more, and the clutch gear leaves the position meshed with the main gear and the auxiliary gear. The pushing component is equivalent to a switch for enabling the clutch gear to enter and separate from the meshing position of other gears, and the driven gear can be separated from the meshing position in the moment of rotation of the driving plate by utilizing the pushing component and the gear sets matched with each other, so that the driving gear is prevented from being continuously meshed with the driving gear and the driven gear, the driven gear is stopped from being meshed for transmission, and the accuracy of the output rotary power of the driven gear is ensured.
Further, the switching mechanism comprises a first gear, a second gear and a third gear which are meshed with each other; the first gear is a gear provided with the pushing component and is directly meshed with the third gear; the second gear is a gear rotating with the drive plate and is directly meshed with the third gear; in the process of meshing transmission of the first gear, the second gear and the third gear, the second gear rotates with the drive plate for a first angle, and simultaneously the first gear rotates for a second angle.
Specifically, the switching mechanism is composed of three gears, wherein the first gear is used for controlling the pushing component to push the sliding shaft, and the second gear is used for enabling the whole switching mechanism to be in meshing transmission, so that the switching mechanism has two functions at the same time, and the effect of multi-stage reduction transmission is achieved through the cooperation of the first gear, the second gear and the third gear; the second gear rotates with the drive plate by a first angle, and simultaneously, the first gear rotates by a second angle. Meanwhile, the first drive input end drives the driving plate and the second gear simultaneously, the driving plate rotates and the whole mechanism starts to be in meshing transmission at the same time, so that the pushing component and the clutch gear move by the same angle, the sliding shaft is pushed when the groove wheel is static, the sliding shaft stops being pushed when the driving plate moves, the clutch gear is controlled to enter or separate from a position meshed with the main gear and the auxiliary gear, and the purpose of miniaturization of the device is achieved.
Furthermore, an elastic component is arranged on the sliding shaft and used for enabling the clutch gear to be separated and reset when the driving plate rotates.
The elastic component is used for realizing the reset of the position of the clutch gear, the clutch gear can be quickly separated from the position meshed with the main gear and the auxiliary gear when the drive plate rotates by utilizing the elastic force, the clutch gear is effectively prevented from being meshed with the driven gear in the position changing process, and the stability and the accuracy of the power output by the driven gear are ensured.
Further, a plurality of radial grooves are formed in the grooved wheel; the driving plate is provided with a driving pin, and the driving pin is matched with the radial groove of the grooved wheel, so that the driving plate drives the grooved wheel to rotate by a second angle while rotating by a first angle.
Further, the number of the radial grooves formed in the grooved wheel is n; the first angle is 360 DEG, and the second angle is 360 DEG/n;
further, the number of radial grooves provided in the sheave is the same as the number of the driven gears.
Further, the pushing component is a bidirectional wedge-shaped lug. No matter the driving plate drives the grooved wheel to rotate clockwise or anticlockwise, the bidirectional wedge-shaped protruding block can push and release the sliding shaft in two directions, and the clamping is not easy to occur in the pushing and releasing process.
The technical scheme adopted by the invention is as follows:
the driving device of the electrically tunable antenna comprises the gear driving device and a plurality of output shafts in the previous technical scheme, wherein each output shaft is coaxially fixed with one driven gear and is used for rotating along with the driven gear, so that the downtilt angle of the electrically tunable antenna is adjusted.
The high-precision rotating power output by the driven gear of the gear driving device provided by the technical scheme is utilized, and the rotating power is used for adjusting the downward inclination angle of the electrically-adjustable antenna through the output shaft, so that the downward inclination angle of the electrically-adjustable antenna is accurately adjusted.
Compared with the prior art, the invention has the beneficial effects that:
(1) the gear driving device provided by the invention realizes the meshing transmission of the clutch gear and the plurality of driven gears in sequence by using the reversing mechanism, and simultaneously controls the clutch gear not to be meshed with any gear in the process of changing the position under the driving of the first driving input end by using the switching mechanism, so that the rotary power generated by the driven gears can be accurately controlled, and therefore, when the rotary power output is applied to any adjusting device or driving device, the high-precision adjustment can be realized, and instruments, devices or equipment and the like can be driven in a high-precision mode.
(2) The switching mechanism in the gear driving device provided by the invention achieves the effect of multi-stage speed reduction transmission in a multi-stage gear meshing mode, and because the first driving input end simultaneously drives the drive plate and the second gear, the whole mechanism starts to be meshed for transmission when the drive plate rotates, so that the clutch gear is controlled to enter or separate from the position meshed with the main gear and the auxiliary gear, and the purpose of miniaturization of the device is achieved.
(3) The gear driving device provided by the invention is applied to the adjustment of the downtilt angle of the electrically-adjustable antenna, can be integrated near or in the electrically-adjustable antenna in a miniaturized form, and can output power to adjust the downtilt angle of the electrically-adjustable antenna in a high-precision mode, so that the change of the phase position of the electrically-adjustable antenna is adjusted.
Drawings
Fig. 1 is a front view schematically showing a gear drive device according to embodiment 1.
Fig. 2 is a schematic structural view of the clutch gear shifting position in embodiment 1.
Fig. 3 is a schematic structural view of connection between a sheave and a clutch gear in embodiment 1.
Fig. 4 is a schematic structural view of the embodiment 1 in which the pushing member pushes the sliding shaft to change the position of the clutch gear on the sheave.
Fig. 5 is a schematic structural view of the connection between the second gear and the dial in embodiment 1.
Fig. 6 is a rear view schematically showing the gear drive device of embodiment 1.
Fig. 7 is a schematic structural view of the slide shaft of embodiment 1 provided with an elastic member.
Fig. 8 is a structural schematic diagram of the pin and radial groove of the sheave in the embodiment 1.
Fig. 9 is another schematic front view of the gear drive device of embodiment 1.
Fig. 10 is a schematic structural view of the pushing member and the first gear in embodiment 1.
Fig. 11 is a perspective view of the gear drive device of embodiment 1.
Fig. 12 is a schematic structural view of the connection of the output shaft of embodiment 2 to the gear drive device of embodiment 1.
The parts in the figures comprise: a sheave 110; a radial groove 111; a dial 120; a pin 121; a drive gear 210; a driven gear 220 (including a driven gear 220a and a driven gear 220 b); a clutch gear 230; the slide shaft 231; an elastic member 232; a first gear 310; a pushing member 311; a second gear 320; a third gear 330; a fixing base 400; a first base 510; a second base 520; an output shaft 600.
Detailed Description
The drawings are only for purposes of illustration and are not to be construed as limiting the invention. For a better understanding of the following embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
Example 1
The embodiment provides a gear driving device, which comprises a reversing mechanism, a transmission mechanism and a switching mechanism;
as shown in fig. 1, the reversing mechanism includes a sheave 110, a dial 120, and a first drive input; the first driving input end is connected with the dial 120 and is used for driving the dial 120 to rotate; the dial 120 is used for cooperating with the sheave 110 and driving the sheave 110 to rotate by a second angle while rotating by a first angle;
the transmission mechanism comprises a driving gear 210, a plurality of driven gears 220, a clutch gear 230 and a second driving input end; the driving gear 210 and the sheave 110 are located on the same rotating shaft; the driven gears 220 are uniformly distributed on the periphery of the driving gear 210; the clutch gear 230 is connected with the sheave 110 for meshing with the driving gear 210 and one of the driven gears 220; the second driving input end is used for driving the driving gear 210 to rotate, so that the driving gear 210, the driven gear 220 and the clutch gear 230 are in meshing transmission; the number of the driven gears 220 may be determined according to actual needs, and is not limited to the number of four driven gears in fig. 1.
The first driving input end is also used for driving the switching mechanism to control the clutch gear 230 to enter or leave a position meshed with the driving gear 210 and one driven gear 220;
the switching mechanism is used for driving the clutch gear 230 to enter a position meshed with the driving gear 210 and one driven gear 220 when the sheave 110 is static and enabling the clutch gear 230 to be disengaged from the position meshed with the driving gear 210 and the driven gear 220 when the dial 120 rotates under the driving of the first driving input end; more specifically, the switching mechanism, under the drive of the first drive input, causes the clutch gear 230 to enter a position of engagement with the drive gear 210 and one of the driven gears 220 when the sheave 110 is stationary and the second drive end is not driving the drive gear 210 to rotate.
The operation flow of the gear driving device of the embodiment is as follows:
when the first driving input end drives the dial 120 to rotate and drives the switching mechanism, the dial 120 drives the sheave 110 to rotate, the clutch gear 230 connected with the sheave 110 also rotates, and the dial 120 rotates by a first angle and simultaneously drives the sheave 110 to rotate by a second angle, namely the clutch gear 230 also rotates by a second angle;
after the clutch gear 230 rotates by the second angle, the clutch gear 230 enters a position meshed with one of the driven gears 220 and the driving gear 210 under the control of the switching mechanism, when the second driving input end drives the driving gear 210 to rotate, the driving gear 210, the clutch gear 230 and one of the driven gears 220 are in meshed transmission, and the rotary power generated by the driven gear 220 in meshed transmission can be output and applied to any suitable adjusting device or driving device.
As shown in fig. 2, when the dial 120 rotates from point M to point N, the sheave 110 is driven to rotate by a second angle, the dial 120 continues to rotate from point N to the first angle (i.e. back to point M), the clutch gear 230 changes its position after rotating by the sheave 110 by the second angle, and changes its position from the original position of engagement with one of the driven gears 220a to the position of engagement with the other driven gear 220b, under the control of the switching mechanism, the clutch gear 230 is disengaged from the positions of engagement with the driving gear 210 and the driven gear 220a when the dial 120 starts to rotate, and enters the position of engagement with the driving gear 210 and the driven gear 220b when the sheave 110 is stationary after rotating by the second angle, and the three start to engage with each other under the rotation of the driving gear 210.
It can be seen that, under the cooperation of the grooved wheel 110 and the dial 120 of the reversing mechanism, the clutch gear 230 can be shifted to a position meshed with each driven gear 220, so as to be sequentially meshed with each driven gear 220, and in the process of shifting the position, the clutch gear 230 is not meshed with any driven gear 220 for transmission through the control of the switching mechanism, and when the clutch gear 230 enters a position meshed with the driving gear 210 and one of the driven gears 220, the clutch gear 210 rotates and is meshed with the driven gear 220 for transmission, so that each driven gear 220 outputs corresponding rotary power at different moments.
Under the control of the switching mechanism, the clutch gear 230 is not engaged with the master and slave gears in the process of changing the position, and is engaged with the master and slave gears when the position changing is completed, so that the clutch gear 230 is ensured not to be engaged with any driven gear 220 for transmission in the process of changing the position (reversing along with the sheave 110), the rotary power output by each driven gear 220 is accurately controlled, and the precision is higher and the error is smaller when the rotary power output by the driven gear 220 is applied to a related adjusting or driving mechanism/device.
Specifically, as shown in fig. 3, the clutch gear 230 is provided with a sliding shaft 231, and the clutch gear 230 is connected to the sheave 110 via the sliding shaft 231, so that the clutch gear 230 has a sliding freedom on the sheave 110, i.e., can move forward or backward in the direction of the sliding shaft 231.
Meanwhile, the switching mechanism is matched with the sliding shaft 231, so that the clutch gear 230 enters a position meshed with the driving gear 210 and one of the driven gears 220 along the direction of the sliding shaft 231 when the sheave 110 is static and the driving gear 210 does not rotate, the position meshed with the driving gear 210 and the driven gear 220 is separated along the direction of the sliding shaft 231 when the dial 120 rotates, the sliding shaft 231 plays a guiding role in the sliding process of the clutch gear 230, the clutch gear 230 can accurately enter or separate the position meshed with the main gear and the driven gear, and the rotary power generated in the meshing transmission process of the main gear, the driven gear and the clutch gear 230 is more accurate.
Specifically, the switching mechanism comprises a plurality of gears meshed with each other; as shown in fig. 4, the surface of one of the gears 310 is provided with a pushing member 311, the pushing member 311 is used for pushing the sliding shaft 231 when the sheave 110 is stationary and the driving gear 210 is not rotating, so that the clutch gear 230 is brought into a position of meshing with the driving gear 210 and one of the driven gears 220 in the direction of the sliding shaft 231, as shown in fig. 4, the pushing member 311 is pushing the sliding shaft 231, so that the clutch gear 230 is brought into a position of meshing with the master and slave gears; the gear 310 provided with the pushing member 311 may serve as a first gear 310 of the switching mechanism for controlling the pushing member 311 to push the sliding shaft 231, so that the clutch gear 230 is brought into a position of being engaged with the main and auxiliary gears in a direction of the sliding shaft 231 when it is required to be engaged with the main and auxiliary gears (i.e., when the sheave 110 is stationary and the driving gear 210 is not rotated).
As shown in fig. 5, the other gear 320 is directly driven by the first driving input end to rotate with the dial 120, and the gear 320 and the dial 120 can rotate simultaneously in a manner of connecting them in fig. 5, i.e. in a manner of coaxial fixation, or in any other suitable manner; since the switching mechanism is composed of a plurality of gears engaged with each other, the gear 320 rotated with the dial 120 can be used as the second gear 320 of the switching mechanism for engaging and transmitting the whole switching mechanism when rotated with the dial 120 under the driving of the first driving input terminal.
Referring to fig. 4, 5 and 6, the plurality of gears engaged with each other of the switching mechanism further includes a third gear 330, the third gear 330 is engaged with the first gear 310 and the second gear 320, respectively, the third gear 330 is used for enabling the first gear 310 and the second gear 320 to realize engagement transmission, at least three gears engaged with each other in the switching mechanism constitute multi-stage gear engagement, the multi-stage gear can rotate at different speeds in the transmission process through the design of the number of teeth, the radius and the like of the gears, the switching mechanism in this embodiment is designed such that when the second gear 320 and the dial plate 120 rotate at the same time by the first angle, the first gear 310 rotates by the second angle or more than the second angle through the cooperation between the three gears, when the first gear 310 starts to rotate, the pushing member 311 provided thereon will not cooperate with the sliding shaft 231 when the gear 310 rotates, namely, the sliding shaft 231 is stopped to push the clutch gear 230 connected with the sliding shaft 231 out of the position meshed with the main gear and the auxiliary gear, and the first gear 310 finally rotates by a second angle or more, so that the pushing member 311 on the first gear 310 can push the sliding shaft 231 at the position after the clutch gear 230 is changed, so that the clutch gear 230 enters the position meshed with the main gear and the auxiliary gear, thereby realizing the switching control of the switching mechanism on the clutch gear 230, and enabling the clutch gear 230 to be sequentially meshed with each driven gear 220 for transmission.
The time when the first gear 310 starts to rotate should be earlier than the time when the sheave 110 and the clutch gear 230 start to rotate, so that the pushing member 311 can leave the position for pushing the sliding shaft 231 first, and the clutch gear 230 is disengaged from the position engaged with the main gear and the slave gear when the dial 120 rotates, thereby ensuring that the driven gear 220 does not generate meshing transmission due to the position change of the clutch gear 230, and ensuring the accuracy of the rotational power generated by the driven gear 220.
The first gear 310, the second gear 320 and the third gear 330 in the switching mechanism only indicate that there are three gears in the switching mechanism, and each gear plays a different role in the mechanism, but do not indicate that only three gears in the switching mechanism are matched, and the requirements are specifically determined according to the number of components of the reversing mechanism and the transmission mechanism and the product requirements.
Preferably, as shown in fig. 7, an elastic member 232 is disposed on the sliding shaft 231, the elastic member 232 is used for disengaging the clutch gear 230 from a position engaged with the main and the slave gears and returning to the original position, when the sheave 110 and the clutch gear 230 are stationary, the pushing member 311 pushes the sliding shaft 231, so that the elastic member 232 on the sliding shaft 231 is compressed and deformed, when the dial 120 rotates, the switching mechanism is engaged to drive the pushing member 311 to stop pushing the sliding shaft 231, at this time, the elastic member 232 returns to the original position after the external force of the pushing member 311 is removed, and the generated elastic force drives the clutch gear 230 to disengage from the position engaged with the main and the slave gears along the direction of the sliding shaft 231, that is, disengage and return to the original position, that is, the position not engaged. The elastic component 232 is used for realizing the reset of the position of the clutch gear 230, the clutch gear 230 can be quickly separated from the position meshed with the main gear and the auxiliary gear when the drive plate 120 rotates by utilizing the elastic force, the clutch gear 230 is effectively prevented from being meshed with the driven gear 220 again in the process of changing the position, and the stability and the accuracy of the power output by the driven gear 220 are ensured.
Specifically, as shown in fig. 8, the sheave 110 is provided with a plurality of radial grooves 111; the dial 120 is provided with a dial pin 121, and the dial pin 121 is matched with the radial groove 111, so that the dial 120 rotates by a first angle and drives the sheave 110 to rotate by a second angle. When the pin 121 starts to enter the radial groove 111, that is, the pin 121 starts to drive the sheave 110 to rotate at point M in fig. 8, the pin 121 drives the sheave 110 to rotate all the time from point M to point N, but the pin 121 stops driving the sheave 110 to rotate from point N and starts to disengage from the radial groove 111 of the sheave 110, the pin 121 continues to rotate until point M stops rotating, in the whole rotation process, in combination with 4, 5, 6, 8, the dial 120 drives the second gear 320 to rotate, thereby driving the third gear 330 and the first gear 310 engaged with the second gear 320 to rotate, thereby rotating the pushing member 311 provided on the first gear 310, when the pin 112 starts to rotate the sheave 110 at point M, the pushing member 311 stops pushing the sliding shaft 231 to disengage the clutch gear 230 from the position where the master and slave gears are engaged, and in the process that the pin 112 rotates to point N and stops when point M returns to point M, the pushing member 311 pushes the sliding shaft 231 at a certain time to bring the clutch gear 230 into a position of meshing with the master-slave gear. Specifically, the dial 120 rotates 360 °, and the sheave 110 is driven by the dial 120 to rotate 360 °/n, where n is the number of radial grooves, as shown in fig. 8, if the number of radial grooves is four, the sheave 110 only rotates 90 ° in the process of rotating 360 ° of the dial 120, that is, the clutch gear 230 also rotates 90 ° with the sheave 110; by analogy, if the number of the radial grooves is 6, the sheave 110 rotates only 60 ° during the 360 ° rotation of the dial 120, and the clutch gear 230 rotates only 60 ° with the sheave 110.
Alternatively, the dial 120 may be provided with more than one set pin 121 than the one shown in fig. 8, where the number of the set pins 121 is x, and the number of the radial grooves is n, so that when the dial 120 rotates 360 °, the sheave 110 may be driven to intermittently rotate x times, and each time the angle is 360 °/n, so that the sheave 110 rotates 360 ° x/n in the process of rotating 360 ° of the dial 120.
As shown in fig. 9, if the clutch gear 230 is engaged with different driven gears 220 after each shift position, at least one driven gear 220 needs to be distributed at each shift position, the number of the driven gears 220 may be the same as the number of the radial grooves 111, as shown in fig. 9, the number of the radial grooves 111 is four, the number of the driven gears 220 may also be four, if the number of the radial grooves 111 is six, the number of the driven gears 220 may be six, and so on, but the number of the driven gears 220 may be determined according to actual needs, any number of the driven gears 220 may be provided at each shift position, and it may also be designed that the driven gears 220 are not provided at all the shift positions.
Preferably, as shown in fig. 10, the pushing member 311 is a bidirectional wedge-shaped protrusion, and the purpose of the bidirectional wedge is to: no matter the dial 120 drives the sheave 110 to rotate clockwise or counterclockwise, the pushing member 311 in the bidirectional wedge-shaped protrusion structure can push and release the sliding shaft 231 in two directions, and the jamming is not easy to occur in the pushing and releasing process.
Specifically, as shown in fig. 11, the gear driving device further includes a fixing base 400, a first base 510 and a second base 520, wherein a plurality of driven gears 220 are uniformly distributed around the driving gear 210 and fixed on the fixing base 400; the grooved wheel 110, the first gear 310 and the first base 510 are coaxially fixed, and the dial 120, the second gear 320 and the second base 520 are coaxially fixed; under the fixation of the fixing seat 400, the first base 510 and the second base 520, the whole gear driving device works more stably.
Example 2
The present embodiment provides a driving device for an electrically tunable antenna, as shown in fig. 12, including the gear driving device provided in embodiment 1 and a plurality of output shafts 600, each output shaft 600 is coaxially fixed with one driven gear 220, and is configured to rotate with the driven gear 220, so as to adjust a downtilt angle of the electrically tunable antenna, which is equivalent to using rotational power output by the driven gear 220 to adjust the downtilt angle of the electrically tunable antenna. Alternatively, the output shaft 600 and the driven gear 220 may not be in a one-to-one relationship, but may be in a many-to-one or one-to-many relationship, depending on the actual design or product requirements.
By using the high-precision rotation power output by the driven gear 220 of the gear driving device provided in embodiment 1, the rotation power is used to adjust the downtilt angle of the electrically tunable antenna through the output shaft 600, so that the downtilt angle of the electrically tunable antenna is accurately adjusted.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the technical solutions of the present invention, and are not intended to limit the specific embodiments of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention claims should be included in the protection scope of the present invention claims.

Claims (10)

1. A gear driving device is characterized by comprising a reversing mechanism, a transmission mechanism and a switching mechanism;
the reversing mechanism comprises a grooved wheel, a driving plate and a first driving input end; the first driving input end is connected with the drive plate and used for driving the drive plate to rotate; the driving plate is used for being matched with the grooved wheel, and driving the grooved wheel to rotate by a second angle while the driving plate rotates by a first angle;
the transmission mechanism comprises a driving gear, a plurality of driven gears, a clutch gear and a second driving input end; the driving gear and the grooved pulley are positioned on the same rotating shaft; the driven gears are uniformly distributed on the periphery of the driving gear; the clutch gear is connected with the grooved pulley and is used for being meshed with the driving gear and one driven gear; the second driving input end is connected with the driving gear and is used for driving the driving gear to rotate;
the first driving input end is also used for driving the switching mechanism to control the clutch gear to enter or disengage from a position meshed with the driving gear and one driven gear;
the switching mechanism is used for enabling the clutch gear to enter a position meshed with the driving gear and one driven gear when the groove wheel is static under the driving of the first driving input end, and enabling the clutch gear to be separated from the position meshed with the driving gear and the driven gear when the driving plate rotates;
when the first driving input end drives the driving plate to rotate, the driving plate drives the grooved wheels and the clutch gears to rotate, the clutch gears are sequentially and respectively meshed with the driven gears under the control of the switching mechanism, and when the second driving input end drives the driving gear to rotate, the driving gear, the clutch gears and the driven gears are in meshing transmission.
2. Gear drive arrangement according to claim 1,
the clutch gear is provided with a sliding shaft and is connected with the grooved pulley through the sliding shaft;
the switching mechanism is matched with the sliding shaft, so that the clutch gear enters a position meshed with the driving gear and one driven gear when the groove wheel is static, and is separated from the position meshed with the driving gear and the driven gear when the driving plate rotates.
3. Gear drive arrangement according to claim 2,
the switching mechanism comprises a plurality of gears meshed with each other;
the surface of one gear is provided with a pushing component which is used for pushing the sliding shaft when the sheave is static so that the clutch gear enters a position meshed with the driving gear and one driven gear;
the other gear is used for rotating with the driving plate under the driving of the first driving input end, and the whole switching mechanism is in meshing transmission when the other gear rotates, so that the pushing component stops pushing the sliding shaft when the driving plate rotates, and the clutch gear is separated from the position meshed with the driving gear and the driven gear.
4. Gear drive arrangement according to claim 3,
the switching mechanism comprises a first gear, a second gear and a third gear which are meshed with each other;
the first gear is a gear provided with the pushing component and is directly meshed with the third gear;
the second gear is a gear rotating with the drive plate and is directly meshed with the third gear;
in the process of meshing transmission of the first gear, the second gear and the third gear, the second gear rotates with the drive plate for a first angle, and simultaneously the first gear rotates for a second angle.
5. The gear driving device according to any one of claims 2 to 4, wherein an elastic member is provided on the sliding shaft, and the elastic member is configured to disengage and return the clutch gear when the dial is rotated.
6. The gear drive device according to any one of claims 1 to 4,
the grooved pulley is provided with a plurality of radial grooves;
the driving plate is provided with a driving pin, and the driving pin is matched with the radial groove of the grooved wheel, so that the driving plate drives the grooved wheel to rotate by a second angle while rotating by a first angle.
7. Gear drive arrangement according to claim 6,
the number of the radial grooves arranged on the grooved wheel is n; the first angle is 360 ° and the second angle is 360 °/n.
8. The gear drive of claim 7, wherein the sheaves are provided with the same number of radial grooves as the number of driven gears.
9. Gear drive device according to any of claims 3 or 4 characterized in that said pushing means are two-way wedge cams.
10. A driving device of an electrically tunable antenna, comprising the gear driving device according to any one of claims 1 to 9 and a plurality of output shafts, wherein each output shaft is coaxially fixed with one driven gear and is configured to rotate with the driven gear, so as to adjust a down tilt angle of the electrically tunable antenna.
CN202011197448.9A 2020-10-30 2020-10-30 Gear driving device and driving device of electrically tunable antenna Pending CN112283541A (en)

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Application Number Priority Date Filing Date Title
CN202011197448.9A CN112283541A (en) 2020-10-30 2020-10-30 Gear driving device and driving device of electrically tunable antenna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011197448.9A CN112283541A (en) 2020-10-30 2020-10-30 Gear driving device and driving device of electrically tunable antenna

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113346243A (en) * 2021-05-12 2021-09-03 摩比天线技术（深圳）有限公司 Display device for electrically-controlled antenna downward inclination angle and electrically-controlled antenna
CN114109353A (en) * 2021-11-15 2022-03-01 内蒙古民族大学 Pumping unit working environment detection device and system based on Internet of things technology
CN116780204A (en) * 2023-08-24 2023-09-19 成都时代宇辰科技有限公司 Zero-position-free switch design system of mechanical phased array antenna and control method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113346243A (en) * 2021-05-12 2021-09-03 摩比天线技术（深圳）有限公司 Display device for electrically-controlled antenna downward inclination angle and electrically-controlled antenna
CN113346243B (en) * 2021-05-12 2024-05-28 摩比天线技术（深圳）有限公司 Display device for downward inclination angle of electric tuning antenna and electric tuning antenna
CN114109353A (en) * 2021-11-15 2022-03-01 内蒙古民族大学 Pumping unit working environment detection device and system based on Internet of things technology
CN114109353B (en) * 2021-11-15 2024-02-06 内蒙古民族大学 Pumping unit working environment detection device and system adopting Internet of things technology
CN116780204A (en) * 2023-08-24 2023-09-19 成都时代宇辰科技有限公司 Zero-position-free switch design system of mechanical phased array antenna and control method
CN116780204B (en) * 2023-08-24 2023-10-20 成都时代宇辰科技有限公司 Zero-position-free switch design system of mechanical phased array antenna and control method

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