CN106532263B - Down-dip angle control device - Google Patents
Down-dip angle control device Download PDFInfo
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- CN106532263B CN106532263B CN201611264977.XA CN201611264977A CN106532263B CN 106532263 B CN106532263 B CN 106532263B CN 201611264977 A CN201611264977 A CN 201611264977A CN 106532263 B CN106532263 B CN 106532263B
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- 230000033001 locomotion Effects 0.000 description 10
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- 230000004044 response Effects 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
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- 230000001413 cellular effect Effects 0.000 description 1
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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
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Abstract
The invention provides a downward inclination angle control device which comprises a selection switching device and a plurality of power output mechanisms, wherein the selection switching device is used for realizing the switching among the plurality of power output mechanisms and comprises a driving structure for driving the power output mechanisms to move linearly in the axial direction and a transmission structure for receiving external power transmission, the driving structure comprises a platform and a convex edge arranged on the platform, the convex edge is in functional connection with at least one power output mechanism, the convex edge moves relatively to the plurality of power output mechanisms, and the convex edge moves circularly and reciprocally among the plurality of power output mechanisms. Aiming at the control of the electrical downtilt angle of the multi-beam antenna, the switching selection control device has simpler structure, higher reliability and lower cost, and accords with the future development trend.
Description
Technical Field
The invention relates to the technical field of mobile communication base station antennas, in particular to a downward inclination angle control device for selectively switching a plurality of power output mechanisms.
Background
With the increasing number of mobile communication terminal users, the network capacity requirements of stations in a mobile cellular network are increasing, and meanwhile, the interference between different stations and even between different sectors of the same station is required to be minimized, namely, the maximization of the network capacity and the minimization of the interference are realized. This is typically achieved by adjusting the downtilt of the antenna beam at the station.
However, in two modes of adjusting the beam downtilt angle, namely mechanical downtilt and electronic downtilt, the electronic downtilt has obvious advantages, and is a current mainstream and a future development trend. Electronic downtilt control is mainly divided into two main types, namely internal control and external control, wherein the internal control is the main stream of the current and future. There are mainly two modes of electronic downtilt built-in control, one mode is to implement adjustment by configuring a set of driving and control systems for each column beam of a single antenna. When the number of the wave beams is large, the scheme has high cost and occupies large space inside the antenna; the other mode is to configure a set of driving and controlling system for each pair of antennas, and the scheme needs at most two motors, has obvious cost advantage for the multi-beam antenna, has compact structure and saves space, and is the mainstream in the future. However, although the second electronic downtilt built-in control mode can reduce the use of a motor and a control circuit and reduce the occupation of the internal space of the antenna, the second electronic downtilt built-in control mode adopts a multistage transmission mode to output the torque of the motor, and has low transmission efficiency.
Disclosure of Invention
The invention aims to provide a downward inclination angle control device which has a simple structure and low cost and can improve the transmission response speed when being used for downward inclination angle adjustment.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model provides a downtilt angle controlling means, its includes selects auto-change over device and a plurality of power take-off mechanism, the auto-change over device is used for realizing the switching between a plurality of power take-off mechanisms, and it includes the drive structure who is used for driving power take-off mechanism axial rectilinear motion and is used for receiving external power transmission's transmission structure, and drive structure include a platform and set up in protruding edge on the platform, protruding edge forms the effect with at least one power take-off mechanism and is connected, protruding edge and a plurality of power take-off mechanism relative motion, protruding edge is followed and is reciprocated in circulation between a plurality of power take-off mechanisms. Preferably, the convex edge is an inclined plane.
Preferably, the convex edge is a symmetrically arranged inclined plane.
Preferably, the convex edge is arranged in a circular arc shape along the platform.
Preferably, a guide groove is provided along the extension direction of the convex edge, and the power output mechanism slides relatively along the guide groove.
Preferably, the two sides along the width direction of the guide groove are provided with an outer side wall of the guide groove and an inner side wall of the guide groove.
Preferably, the guide groove and the convex edge form a closed loop structure.
Preferably, the transmission structure comprises a transmission gear which is positioned on one side of the platform opposite to the convex edge and is integrally formed with the platform.
Preferably, a positioning hole for marking the initial position is formed in the end face, connected with the transmission gear, of the platform.
Preferably, the platform is a circular platform, and the plurality of power output mechanisms are uniformly distributed along the circumferential direction of the platform.
Compared with the prior art, the scheme of the invention has the following advantages:
according to the downward inclination angle control device, the convex edge pushes the plurality of power output mechanisms supported on the platform to axially move by circularly reciprocating among the plurality of power output mechanisms through rotation of the driving structure, so that the switching among the plurality of power output mechanisms is realized. In the invention, the convex edge directly pushes the power output mechanism to axially move, and the invention has the advantages of simple structure, small occupied space and high response speed. Meanwhile, the problems of high cost, large size, complex structure, low reliability, low response speed and the like of the conventional switching selection device are solved.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a perspective view of a downtilt control apparatus of the present invention, mainly illustrating the configuration of a ledge on a platform;
FIG. 2a is another perspective view of the downtilt control apparatus of the present invention, mainly illustrating the configuration of the ledge on the platform;
FIG. 2b is another angular perspective view of the downtilt control apparatus of FIG. 2a, primarily illustrating the relationship of the drive gear to the platform;
FIG. 3 is a perspective view of a downtilt control apparatus employing the present invention;
fig. 4 is a front view of the downtilt control apparatus shown in fig. 3;
fig. 5 is a top view of the combination of internal structures of the support frame of the downtilt control device shown in fig. 3.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.
Embodiments of the present invention will be described below with reference to the accompanying drawings.
The invention provides a downward inclination angle control device which is used for realizing the switching among a plurality of power output mechanisms 200 so as to finally realize the downward inclination angle adjustment. In this embodiment, the selection switch device is a cam 100.
The cam 100 includes a driving structure for driving the power output mechanism 200 to linearly move in the axial direction, and a transmission structure for receiving transmission of an external force. The driving structure comprises a platform 101 carrying a plurality of power output mechanisms 200 and a convex edge 102 arranged on the platform 101, the power output mechanisms 200 slide relatively on the cam 100 along with the rotation of the cam 100 around the axial direction, and when one or more power output mechanisms 200 slide to the convex edge 102, the power output mechanisms 200 are in operative connection with the convex edge 102. Specifically, as shown in fig. 1 and 3, in this embodiment, the convex edge 102 is formed by an upper slope 1021 and a lower slope 1022, and a highest point 1023 of the convex edge 102 is located between the upper slope 1021 and the lower slope 1022. During the movement of the power output mechanism 200 from the platform 101 to the highest point 1023 via the upper slope 1021, the upper slope 1021 forms an upward thrust on the power output mechanism 200, so that the power output mechanism 200 moves straight upward along the axial direction thereof. The convex edge 102 moves relatively to the power output mechanisms 200, and when the power output mechanism 200 moves from the highest point 1023 to the platform 101 through the downward slope 1022, the downward slope 1022 forms an upward supporting force on the power output mechanism 200, so that the power output mechanism 200 moves linearly downward along the axial direction. As such, the flange 102 cycles back and forth between the plurality of power take-offs 200.
The flange 102 may be a slope, and the power take-off mechanism 200 may move circularly along the slope in the axial direction under the supporting force of the slope. The convex edge 102 is a symmetrically arranged inclined surface, and according to fig. 2a and 3, the inclined surface 102 'is symmetrically arranged left and right, and the power output mechanism 200 and the inclined surface 102' perform relative movement. During the movement of the power take-off mechanism 200 along the inclined surface 102' from the lower position to the highest position 1023', the component force of the inclined surface 102' in the axial direction of the power take-off mechanism 200 pushes the power take-off mechanism 200 to move upwards along the axial direction; during the movement of the movement output mechanism 200 along the inclined surface 102' from the highest point 1023' to the lower position, the component force of the inclined surface 102' in the axial direction of the movement output mechanism 200 supports the movement output mechanism 200 to move downward in the axial direction. As such, the flange 102' cycles back and forth between the plurality of power take-offs 200.
As shown in fig. 1 and fig. 2a and 2b, the convex edges 102 and 102' are symmetrical structures arranged along the platform 101 in a circular arc. The convex edge 102 'rotates along with the cam 100, and moves relative to the plurality of power output mechanisms 200, and the power output mechanisms 200 move relative to the convex edges 102, 102' along the platform 101 along the track on the platform 101 in an arc shape. The platform 101 may also be a circular platform, and the plurality of power take-off mechanisms 200 may slide relative to the platform 101 along the circumference of the platform 101. The plurality of power take-off mechanisms 200 on the platform 101 are uniformly distributed on the platform 101, and the plurality of power take-off mechanisms 200 are cyclically moved up or down in the axial direction thereof by the flanges 102, 102'.
A guide slot 103, 103 'is provided in the platform 101 along the extension of the flanges 102, 102'. In this embodiment, the guide grooves 103, 103' are driven by the transmission structure to rotate and slide relative to the power output mechanism 200. The guide grooves 103, 103' limit the power take-off mechanism 200, preventing the power take-off mechanism 200 from being off track.
In fig. 1 and 2a, 2b, guide groove inner side walls 1031, 1031 'and guide groove outer side walls 1032, 1032' are provided along both sides in the width direction of the guide grooves 103, 103 'to better guide and protect the movement of the power output mechanism 200 along the guide grooves 103, 103'. The guide groove may be a concave groove formed in the stage 101. The guide grooves 103 and 103 'and the convex edges 102 and 102' form a closed loop structure, so that a better limiting effect is achieved, and the power output mechanism 200 is further prevented from deviating from the track.
Preferably, the surfaces of the guide grooves 103, 103 'are smooth surfaces to reduce friction between the power take-off mechanism 200 and the guide grooves 103, 103'; or one or both of the contact surfaces between the guide grooves 103, 103' and the power take-off mechanism 200 may be appropriately set as a surface of a certain friction coefficient to adjust the sliding speed or prevent the power take-off mechanism 200 from deviating.
As shown in fig. 1 and 2a, 2b, the drive structure includes a drive gear 110 located on one side of the platform 101 opposite the ledges 102, 102'. In this embodiment, the platform 101 is integrally formed with the drive gear 110. The platform 101 rotates synchronously under the drive of the transmission gear 110, and the convex edges 102 and 102' can push the power output mechanism 200 to move upwards along the axial direction along the component force of the axial direction of the power output mechanism 200 or support the power output mechanism 200 to move downwards along the axial direction.
In other embodiments, the drive gear and platform 101 are two separate components that are integrally assembled with each other and do not rotate relative to each other.
Alternatively, for the transmission structure, a driving device directly connected to the platform, such as a driving motor, may be used to directly drive the driving structure to rotate or stop, so as to push the power output mechanism 200 to axially move.
Further, in order to achieve accurate positioning of the platform 101 during the working process, besides having an accuracy requirement on the rotation angle of the platform 101, it is required that the circumferential starting point position of the platform 101 is accurate. Therefore, a positioning hole 109 for indicating the initial position is formed on the end surface of the platform 101 connected to the transmission gear 110, as shown in fig. 2 b.
The working principle of the cam 100 of the present invention will be described below by means of an application of the cam 100 to the downtilt control apparatus. As in fig. 3-5. Specifically, the downtilt control device comprises the cam 100, the power output mechanism 200, the driving mechanism 300, the starting mechanism 400 and the supporting frame 500, wherein the cam 100, the power output mechanism 200, the driving mechanism 300 and the starting mechanism 400 are all arranged in the supporting frame 500.
The starting mechanism 400 comprises an auxiliary shaft 401 and an auxiliary gear 402 which is fixedly arranged on the auxiliary shaft 401 and synchronously rotates along with the auxiliary shaft 401. The transmission gear 103 is engaged with the auxiliary gear 402 to rotate with the rotation of the auxiliary shaft 401.
The driving mechanism 300 includes a driving shaft 301 and a driving gear 302 fixed on the driving shaft 301 and synchronously rotating with the driving shaft 301. The platform 101 has a via 120 in the center. In the present embodiment, since the stage 101 and the transmission gear 110 are integrally formed, the via hole 120 axially penetrates the stage 101 and the transmission gear 110. The driving shaft 301 is inserted into the through hole 120 of the cam 100, the driving shaft 301 and the cam 100 rotate relatively, that is, the platform 101 and the driving shaft 301 passing through the through hole 120 are not synchronously rotated, the driving shaft 301 and the cam 100 can be driven to rotate by different driving devices, when the transmission gear 110 drives the driving structure to rotate to a specific angle, the driving shaft 301 is axially rotated again when the power output mechanism 200 supported by the driving structure is at a certain height, the downtilt adjusting device connected with the driving power output mechanism 200 is started or rotated, and the switching between multiple pairs of downtilt adjusting devices is realized by the switching cam 100.
Each power take-off mechanism 200 includes a driven shaft 201, the driven shaft 201 includes a first end 2011 and a second end 2012, the driven shaft first end 2011 is supported on the platform 101, and the driven shaft second end 2012 is used for connecting with the downtilt adjusting device. Driven by the starting mechanism 400, the convex edges 102 and 102' push the driven shaft first end 2011 to enable the driven shaft 201 to axially move up and down periodically, so that the driven shaft second end 2012 is connected with the downward inclination angle adjusting device.
The power output mechanism 200 further includes a driven gear 202 fixed to the driven shaft 201 and synchronously rotating. When the driven gear 202 and the driving gear 302 are flat, they can mesh with each other.
The support 500 includes a first panel 501 and a second panel 502 that are disposed opposite to each other, the second end 2012 of the driven shaft penetrates through a hole for abdication formed on the support 500, and the driven shaft 201 can move axially in the hole for abdication.
According to the top view of the structural assembly in the supporting frame 500 of the downtilt control device, as shown in fig. 5, the horizontal distance between the driving shaft 301 and the driven shafts 201 is constant, in other words, each driven gear 202 is uniformly distributed on the platform 101, and as shown in fig. 1 and 2a, the platform 101 is a circular platform, and then the driven shafts 201 shown in fig. 5 are uniformly distributed along the circumferential direction of the platform 101.
When it is required to drive a driven shaft 201 to connect to a downtilt device and rotate, firstly, the auxiliary shaft 401 of the starting mechanism 400 is controlled to rotate to enable the cam 100 to rotate by a preset angle, so that the first end 2011 of the driven shaft slides to the highest points 1023 and 1023' of the convex edges, at this time, the driven gear 202 and the driving gear 302 are flush, the driven gear 202 is meshed with the driving gear 302, and the second end 2012 of the driven shaft is connected to the downtilt device; the rotation of the auxiliary shaft 401 is then stopped and the driving shaft 301 is driven to rotate by the driving device, thereby driving the driven shaft 201 to rotate.
A compression spring 203 is mounted on each driven shaft 201, specifically between the driven gear 202 and the second panel 502, each compression spring 203 being maintained under pressure throughout operation such that the first end 2011 of the driven shaft is always pressed against the ledge 102, 102' of the cam 100.
The downtilt control apparatus further includes a positioning assembly 600 cooperatively coupled to the positioning hole 109 of the platform 101 to fix the home position. Specifically, the positioning assembly 600 is mounted on the first panel 501, and during rotation of the cam 100, the positioning assembly 600 can freely enter and exit the positioning hole 109 without affecting the rotation of the axial cam 100 while positioning the initial state.
The downward inclination angle control device of the cam 100 is used for controlling the electric downward inclination angle of the multi-beam antenna, particularly for controlling the electric downward inclination angle of the built-in multi-frequency electrically-tunable antenna, and the position of the driven shaft 201 to be driven in the axial direction is accurately selected through the cooperation of the starting mechanism 400 and the cam 100, so that the switching of the power output mechanism 200 is realized. Meanwhile, the driven shaft 201 is directly meshed with the driving gear 302, and the driving gear 302 is driven to drive the downward inclination angle adjusting device connected with the second end 2012 of the driven shaft, so that the problem of slow transmission response in the prior art is solved, and the downward inclination angle control is realized more accurately. Meanwhile, the downward inclination angle control device is simple in structure, and the problems of high cost, large size, complex structure, low reliability and the like in the existing scheme are effectively solved.
An antenna adopting the downtilt angle control device is provided. The antenna is internally provided with a plurality of pairs of downward inclination angle adjusting devices, a plurality of driven shafts 201 are periodically pushed to the highest points 1023 and 1023' of the cams through the cam 100, so that the driven shafts 201 are periodically connected with the corresponding downward inclination angle adjusting devices in a separable manner, the switching of the plurality of downward inclination angle adjusting devices is realized, and finally the purpose of downward inclination angle adjustment is realized.
The foregoing is only a partial embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.
Claims (5)
1. A downtilt control device comprises a selection switching device and a plurality of power output mechanisms, wherein the selection switching device is used for realizing the switching among the power output mechanisms and comprises a driving structure for driving the power output mechanisms to axially and linearly move and a transmission structure for receiving external power transmission,
the driving structure comprises a platform and a convex edge arranged on the platform, wherein the convex edge is in functional connection with at least one power output mechanism, the convex edge moves relative to the power output mechanisms, and the convex edge circularly reciprocates among the power output mechanisms;
the platform is a circular platform, and the power output mechanisms are uniformly distributed along the circumferential direction of the platform;
the convex edge is an inclined plane with the highest point; a guide groove is formed along the extending direction of the convex edge, the guide groove and the convex edge form a closed loop structure, the power output mechanism relatively slides along the guide groove, and a plurality of power output mechanisms circularly and reciprocally move upwards or downwards along the axial direction under the action of the convex edge;
the transmission structure comprises a transmission gear which is positioned on one side of the platform opposite to the convex edge and is integrally formed with the platform;
the device also comprises a driving mechanism, a starting mechanism and a supporting frame, wherein the selection switching device, the power output mechanism, the driving mechanism and the starting mechanism are all arranged in the supporting frame;
the starting mechanism comprises an auxiliary shaft and an auxiliary gear which is fixedly arranged on the auxiliary shaft and synchronously rotates along with the auxiliary shaft, and the transmission gear is meshed with the auxiliary gear so as to rotate along with the rotation of the auxiliary shaft;
the driving mechanism comprises a driving shaft and a driving gear which is fixedly arranged on the driving shaft and synchronously rotates along with the driving shaft; the center of the platform is provided with a through hole, the through hole axially penetrates through the platform and the transmission gear, the driving shaft is inserted into the through hole, so that the driving shaft and the selection switching device relatively rotate, when the transmission gear drives the driving structure to rotate to a specific angle, the driving shaft is axially rotated again when the power output mechanism supported by the driving structure is at a certain height, the downward inclination angle adjusting device connected with the power output mechanism is driven to start or rotate, and the selection switching device realizes the switching among a plurality of pairs of downward inclination angle adjusting devices;
the support frame comprises a first panel and a second panel which are oppositely arranged, the second end of the driven shaft used for connecting the downward inclination angle adjusting device penetrates out of the yielding hole formed in the second panel, and the driven shaft can axially move in the yielding hole.
2. The downtilt control apparatus according to claim 1, wherein: the convex edge is a symmetrically arranged inclined plane.
3. The downtilt control apparatus according to claim 2, wherein: the convex edge is arranged in a circular arc shape along the platform.
4. The downtilt control apparatus according to claim 1, wherein: and the two sides along the width direction of the guide groove are provided with an inner side wall of the guide groove and an outer side wall of the guide groove.
5. The downtilt control apparatus according to claim 1, the method is characterized in that: and a positioning hole for marking the initial position is formed in the end surface of the platform, which is connected with the transmission gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611264977.XA CN106532263B (en) | 2016-12-30 | 2016-12-30 | Down-dip angle control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611264977.XA CN106532263B (en) | 2016-12-30 | 2016-12-30 | Down-dip angle control device |
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| Publication Number | Publication Date |
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| CN106532263A CN106532263A (en) | 2017-03-22 |
| CN106532263B true CN106532263B (en) | 2024-01-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611264977.XA Active CN106532263B (en) | 2016-12-30 | 2016-12-30 | Down-dip angle control device |
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| CN (1) | CN106532263B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112928454B (en) * | 2021-02-01 | 2023-01-20 | 中信科移动通信技术股份有限公司 | Feed network switching device and antenna |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10235048A (en) * | 1997-02-26 | 1998-09-08 | Juki Corp | Needle swing pattern switching device for sewing machine |
| CN103329345A (en) * | 2011-01-27 | 2013-09-25 | 凯瑟雷恩工厂两合公司 | Mobile radio antenna comprising a multi beam forming device |
| CN206364185U (en) * | 2016-12-30 | 2017-07-28 | 京信通信系统（中国）有限公司 | One kind selection switching device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8534151B2 (en) * | 2009-02-18 | 2013-09-17 | Xerox Corporation | Gearbox output switcher |
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2016
- 2016-12-30 CN CN201611264977.XA patent/CN106532263B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10235048A (en) * | 1997-02-26 | 1998-09-08 | Juki Corp | Needle swing pattern switching device for sewing machine |
| CN103329345A (en) * | 2011-01-27 | 2013-09-25 | 凯瑟雷恩工厂两合公司 | Mobile radio antenna comprising a multi beam forming device |
| CN206364185U (en) * | 2016-12-30 | 2017-07-28 | 京信通信系统（中国）有限公司 | One kind selection switching device |
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| CN106532263A (en) | 2017-03-22 |
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