CN108119611B - Phase adjusting system of phase shifter and power transmission device thereof - Google Patents
Phase adjusting system of phase shifter and power transmission device thereof Download PDFInfo
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- CN108119611B CN108119611B CN201711492789.7A CN201711492789A CN108119611B CN 108119611 B CN108119611 B CN 108119611B CN 201711492789 A CN201711492789 A CN 201711492789A CN 108119611 B CN108119611 B CN 108119611B
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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
- F16H1/02—Toothed gearings for conveying rotary motion without gears having orbital motion
- F16H1/20—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members
- F16H1/22—Toothed gearings for conveying rotary motion without gears having orbital motion involving more than two intermeshing members with a plurality of driving or driven shafts; with arrangements for dividing torque between two or more intermediate shafts
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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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
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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
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/045—Lubricant storage reservoirs, e.g. reservoirs in addition to a gear sump for collecting lubricant in the upper part of a gear case
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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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H2057/02034—Gearboxes combined or connected with electric machines
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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
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H2057/02039—Gearboxes for particular applications
- F16H2057/02069—Gearboxes for particular applications for industrial applications
Abstract
The invention discloses a phase adjusting system of a phase shifter and a power transmission device thereof, wherein the power transmission device comprises an output assembly, and the output assembly comprises at least two rotatable output gears; the switching assembly comprises a rotating box which is rotatably arranged in the circumference, and a driving gear and a driven gear which are rotatably arranged in the rotating box, the rotating box is provided with a connecting part, the driving gear can drive the driven gear to rotate, and the driven gear can be selectively meshed with any output gear through the rotating box; the first driving mechanism is provided with a first rotary power output end which is fixedly connected with the connecting part of the rotating box in a transmission way; and the second driving mechanism is provided with a second rotary power output end which is fixedly connected with the driving gear in a transmission way. The phase adjusting system of the phase shifter and the power transmission device thereof can reduce the cost of the antenna, reduce the weight and the volume of the antenna and are beneficial to the development of miniaturization of the antenna.
Description
Technical Field
The invention relates to the technical field of communication equipment, in particular to a phase adjusting system of a phase shifter and a power transmission device thereof.
Background
In the current base station antenna, the downward inclination angle adjustment mode mainly has two modes of mechanical downward inclination and electric tilt downward inclination. The principle of the electric tilt down-tilt is that the phase of the phase shifter is changed, so that the phase of the collinear array antenna element is changed, the amplitude of the vertical component and the amplitude of the horizontal component are changed, the field intensity of the synthesized component is changed, and the vertical directional diagram of the antenna is down-tilted.
Each electric tuning frequency band of the multi-frequency electric tuning antenna adopts an independent driving module; however, the more frequency, the more mechanical transmission parts, the higher weight and the larger size of the antenna, which affects the reliability and the safety of the antenna and cannot follow the development trend of antenna miniaturization.
Disclosure of Invention
Therefore, it is necessary to provide a phase adjustment system of a phase shifter and a power transmission device thereof, which can solve the problems of excessive weight and large volume of the antenna caused by excessive mechanical transmission parts in the conventional multi-frequency electrically-tuned antenna, and is beneficial to the development of antenna miniaturization.
The technical scheme is as follows:
in one aspect, an embodiment of the present invention provides a power transmission device, including an output assembly, where the output assembly includes at least two output gears that are circumferentially spaced along a same circumference and are rotatable; the switching assembly comprises a rotating box which is rotatably arranged in the circumference, and a driving gear and a driven gear which are rotatably arranged in the rotating box, the rotating box is provided with a connecting part, the driving gear can drive the driven gear to rotate, and the driven gear can be selectively meshed with any one output gear through the rotating box; the first driving mechanism is provided with a first rotary power output end which is fixedly connected with the connecting part of the rotating box in a transmission way; the second driving mechanism is provided with a second rotary power output end which is fixedly connected with the driving gear in a transmission way; the first rotary power output end, the second rotary power output end, the rotating box and the driving gear rotate around the same axis, and the axis and the center line of the circumference are on the same straight line.
When the power transmission device is used, the driven gear can be driven to be meshed with the corresponding output gear according to requirements, and the driving force is transmitted through the driven gear; specifically, when a certain phase shifter needs to adjust the phase, the first driving mechanism can be controlled to output power to drive the rotating box to rotate, so that the driven gear is meshed with the corresponding output gear; and then the first driving mechanism stops outputting power, the second driving mechanism is controlled to output power, the driven gear is driven to rotate by driving the driving gear, and the corresponding output gear is driven to rotate by the driven gear, so that the phase adjustment of the phase shifter is completed. The power transmission device utilizes two sets of driving mechanisms for power output, one set of driving mechanism is used for switching power output, and the other set of driving mechanism is used for phase adjustment power output of the phase shifter, so that mechanical transmission parts of the multi-frequency electrically-adjusted antenna can be effectively reduced, the weight of the antenna is reduced, and the volume and wind load of the antenna are reduced; meanwhile, the number of parts required to be assembled is small, so that the assembling efficiency and the assembling precision are improved, and the electric control precision is higher. This scheme makes the linkage part all rotate around same straight line simultaneously, can make the structure of linkage part compacter, makes power transmission device's volume littleer, avoids leading to power transmission device's volume too big because of a plurality of axis of rotation of linkage part, is unfavorable for the miniaturized development of antenna.
The technical solution is further explained below:
in one embodiment, the driving gear is engaged with the driven gear.
In one embodiment, the drive gear rotates synchronously with the driven gear through a drive gear set. And then can adjust as required according to the realization, make power transmission more nimble.
In one embodiment, the rotating box comprises a first box body and a second box body which is matched with the first box body to form a mounting cavity, the first box body is provided with the connecting part, the driving gear and the driven gear are rotatably arranged in the mounting cavity, and the mounting cavity is provided with a notch; the driven gear is meshed with the inner side of the output gear through the notch. Therefore, the driving gear and the driven gear are installed according to the cavity formed by the first box body and the second box body, so that the driving gear and the driven gear are convenient to lubricate and protect, and the service life of gear transmission is prolonged.
In one embodiment, the power transmission device further includes a first mounting box, one end of the first mounting box is rotatably connected to the second box, a housing of the second driving mechanism is fixedly disposed in the first mounting box, and the second rotary power output end penetrates through the first mounting box and the second box and is fixedly connected to the driving gear in a transmission manner. The first mounting box is further utilized to realize mounting and fixing of the second driving mechanism, so that a second rotary power output end can conveniently pass through the first mounting box and the second box body and coaxially and synchronously rotate with the driving gear; meanwhile, a waterproof structure is convenient to form, and the second driving mechanism is prevented from short circuit and even directly burning out due to wetting or rainwater immersion.
In one embodiment, the power transmission device further comprises a second mounting box, the second mounting box and the first mounting box form a containing cavity, and all the output gears and the rotating box can be rotatably arranged in the containing cavity. And then utilize first mounting box and second mounting box to form and hold the chamber and install protection output gear and rotate the box, be convenient for deposit the lubricator in holding the intracavity, make the rotation of rotating the part more steady, the wear is littleer, is favorable to improving mechanical transmission part life.
In one embodiment, the housing of the first driving mechanism is fixedly arranged on the outer side of the second mounting box, and the first rotary power output end passes through the second mounting box and is fixedly connected with the connecting part in a transmission manner. And the first driving mechanism is fixedly installed, so that the first rotary power output gear can conveniently penetrate through the second installation box and coaxially and synchronously rotate with the connecting part of the first box body.
In one embodiment, the power transmission device further comprises a third mounting box, the third mounting box and the second box body are matched to form a protection cavity, and the shell of the first driving mechanism is fixedly arranged on the inner wall of the protection cavity. The first driving mechanism is further mounted and fixed, and meanwhile, a waterproof structure is formed by the protection cavity, so that the first driving mechanism is prevented from being short-circuited or even directly burnt out due to damp or rainwater immersion; the setting of further three mounting boxes has improved power transmission device's wholeness, has strengthened the linkage stability of mechanical transmission part.
On the other hand, an embodiment of the present invention further provides a phase adjustment system of a phase shifter, including the above power transmission device, further including a telescopic assembly and a controller, where the telescopic assembly corresponds to the output gear one by one, the telescopic assembly includes a transmission screw rod coaxially and synchronously rotating with the output gear, and a nut sleeve in screw connection and matching with the transmission screw rod, the nut sleeve is provided with an installation portion, and the controller is in communication connection with the first driving mechanism and the second driving mechanism.
When the phase adjusting system is applied to downward inclination adjustment of an antenna, the power transmission device can be provided with at least two transmission screw rods, one ends of the transmission screw rods are fixedly connected with the output ends of corresponding output gears in a transmission mode, the other ends of the transmission screw rods are rotatably arranged at preset positions, and the nut sleeve is connected with a pull rod, a scale and other parts through an installation part, so that the nut sleeve can only linearly move back and forth along the corresponding transmission screw rods under the influence of the pull rod or the scale connected with the nut sleeve and the motion track of the restraint pull rod or the scale, and cannot rotate around the transmission screw rods, and further the nut sleeve on the transmission screw rods can be driven to move through the rotation of the output gears, and the phase adjustment of the phase shifter. The phase adjusting system of the phase shifter adopts the power transmission device, and can solve the problems of overhigh weight and overlarge volume of the traditional multi-frequency electric tilt antenna caused by excessive mechanical transmission parts; meanwhile, the transmission screw rod can be arranged around the outer periphery of the output assembly, so that the antenna structure is more compact, and the development of antenna miniaturization is facilitated.
The technical solution is further explained below:
in one embodiment, the output end of the output gear is provided with a clamping sleeve, and the input end of the transmission screw is provided with a clamping body in limited clamping with the clamping sleeve. And then the fixed transmission that usable cutting ferrule and the spacing block cooperation of the card body realized output gear and drive screw is connected, the dismouting of the maintenance of the counterpoint installation and the later stage of many drive screw of being convenient for with output gear more.
Drawings
FIG. 1 is a schematic diagram of a phase adjustment system of a phase shifter in one embodiment;
FIG. 2 is an exploded view of the power transmission device;
FIG. 3 is a longitudinal half-section schematic view of the power transmission device;
FIG. 4 is a schematic transverse half-section view of the power transmission device of FIG. 3;
fig. 5 is an exploded view of the partial structure of fig. 1.
Description of reference numerals:
10. the power transmission device comprises a power transmission device 100, an output assembly 110, an output gear 112, a clamping sleeve 200, a switching assembly 210, a rotating box 212, a first box body 202, a connecting part 204, a notch 214, a second box body 220, a driving gear 230, a driven gear 300, a first driving mechanism 310, a first rotary power output end 400, a second driving mechanism 410, a second rotary power output end 500, a first mounting box 600, a second mounting box 610, a containing cavity 700, a third mounting box 710, a protection cavity 20, a telescopic assembly 21, a transmission screw 21a, a clamping body 22, a nut sleeve 22a, a mounting part 30 and a scale.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present; further, when an element is regarded as "fixed transmission connection" another element, the two elements may be fixed in a detachable connection manner or fixed in an undetachable connection manner, such as socket joint, clamping joint, integrally formed fixation, welding, and the like, which can be implemented in the prior art and will not be described herein again. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The terms "first" and "second" used herein do not denote any particular order or quantity, but rather are used to distinguish one element from another.
As shown in fig. 1 and 2, the phase adjustment system of a phase shifter according to an embodiment of the present invention includes a power transmission device 10, and further includes a telescopic assembly 20 corresponding to the output gears 110 one by one, and a controller, where the telescopic assembly 20 includes a driving screw 21 coaxially and synchronously rotating with the output gears 110, and a nut sleeve 22 spirally coupled to the driving screw 21, the nut sleeve 22 is provided with a mounting portion 22a, and the controller (not shown) is communicatively connected to the first driving mechanism 300 and the second driving mechanism 400.
When the phase adjusting system is applied to downward inclination adjustment of an antenna, the power transmission device 10 can be provided with at least two transmission screws 21, one end of each transmission screw 21 is fixedly connected with the output end of the corresponding output gear 110 in a transmission manner, the other end of each transmission screw can be rotatably arranged at a preset position, and the nut sleeve 22 is connected with the pull rod, the scale 30 and other parts through the mounting part 22a, so that the nut sleeve 22 can only linearly move back and forth along the corresponding transmission screw 21 under the influence of the pull rod or the scale 30 connected with the nut sleeve 22 and the motion track of the constraint pull rod or the scale 30 and can not rotate around the transmission screw 21, and further the nut sleeve 22 on the transmission screw 21 can be driven to move through the rotation of the output gear 110, thereby realizing the phase adjustment of the phase shifter. The phase adjusting system of the phase shifter adopts the power transmission device 10, and can solve the problems of overhigh weight and overlarge volume of the traditional multi-frequency electric tilt antenna caused by excessive mechanical transmission parts; meanwhile, the transmission screw 21 can be arranged around the outer periphery of the output assembly 100, so that the antenna structure is more compact, and the development of antenna miniaturization is facilitated.
Specifically, as shown in fig. 5, the output end of the output gear 110 is provided with a sleeve 112, and the input end of the drive screw 21 is provided with a clamp body 21a engaged with the sleeve 112 in a limiting manner. And then can utilize the spacing block cooperation of cutting ferrule 112 and card body 21a to realize output gear 110 and the fixed transmission of drive screw 21 and be connected, the dismouting of the counterpoint installation and the later maintenance of many output gear 110 and the many corresponding drive screw 21 of being convenient for.
In this embodiment, as shown in fig. 2 to 4, the power transmission device 10 includes an output assembly 100, where the output assembly 100 includes at least two output gears 110 that are circumferentially spaced and rotatable along the same circumference; the switching assembly 200, the switching assembly 200 includes a rotating box 210 rotatably disposed in the circumference, and a driving gear 220 and a driven gear 230 rotatably disposed in the rotating box 210, the rotating box 210 is provided with a connecting portion 202, the driving gear 220 can drive the driven gear 230 to rotate, and the driven gear 230 can be selectively meshed with any one of the output gears 110 through the rotating box 210; the first driving mechanism 300, the first driving mechanism 300 is provided with a first rotary power output end 310 fixedly connected with the connecting part 202 of the rotating box 210 in a transmission way; and a second driving mechanism 400, the second driving mechanism 400 having a second rotary power output end 410 fixedly connected with the driving gear 220.
As shown in fig. 1 to 5, when the power transmission device 10 is used, the driven gear 230 is driven to mesh with the corresponding output gear 110 according to the requirement, and the driving force is transmitted through the driven gear 230; specifically, when a certain phase shifter needs to adjust the phase, the controller may control the first driving mechanism 300 to output power to drive the rotation box 210 to rotate, so that the driven gear 230 is engaged with the corresponding output gear 110; then, the first driving mechanism 300 stops outputting power, the controller controls the second driving mechanism 400 to output power, the driving gear 220 is driven to drive the driven gear 230 to rotate, the driven gear 230 drives the corresponding output gear 110 to rotate, and the output gear 110 rotates to drive the nut sleeve 22 on the transmission screw 21 to move, so that the phase adjustment of the corresponding phase shifter is realized. The power transmission device 10 utilizes two sets of power output driving mechanisms, one set of driving mechanism is used for switching power output, and the other set of driving mechanism is used for phase adjustment power output of the phase shifter, so that mechanical transmission parts of the multi-frequency electric modulation antenna can be effectively reduced, the weight of the antenna is reduced, and the volume and wind load of the antenna are reduced; meanwhile, the number of parts required to be assembled is small, so that the assembling efficiency and the assembling precision are improved, and the electric control precision is higher.
It should be noted that the detection and calibration of the rotation angle during the revolution switching of the driven gear 230 can be implemented by the prior art, for example, by using a position detection technique, or by using the output pulse of the output shaft of the first driving mechanism 300, and the specific implementation manners thereof are various and will not be described herein again. The first driving mechanism 300 and the second driving mechanism 400 may be a rotary power output mechanism such as a motor (servo motor) and a hydraulic rotary cylinder.
Further, the first rotary power output end 310, the second rotary power output end 410, the rotating box 210, and the driving gear 220 all rotate around the same axis, and the axis is on the same straight line with the center line of the circumference. And then make the linkage part all rotate around same straight line, can make the structure of linkage part compacter, make power transmission unit 10 volume littleer, avoid leading to power transmission unit 10's too big because of a plurality of axis of rotation of linkage part, be unfavorable for the development of antenna miniaturization.
In this embodiment, the driving gear 220 is directly coupled to the driven gear 230 for transmission, and in other embodiments, the driving gear 220 rotates synchronously with the driven gear 230 through a transmission gear set. Furthermore, the linkage implementation mode between the driving gear 220 and the driven gear 230 can be adjusted according to the implementation requirement, so that the power transmission is more flexible.
In this embodiment, as shown in fig. 2 to 4, the rotating box 210 includes a first box 212 and a second box 214 cooperating with the first box 212 to form a mounting cavity, the first box 212 has a connecting portion 202, a driving gear 220 and a driven gear 230 are rotatably disposed in the mounting cavity, and the mounting cavity has a gap 204; the driven gear 230 is engaged with the inside of the output gear 110 through the notch 204. Therefore, the driving gear 220 and the driven gear 230 are installed according to the cavity formed by the first box 212 and the second box 214, so that the driving gear 220 and the driven gear 230 are lubricated and protected, and the service life of the gear transmission is prolonged. Of course, the specific embodiment of the rotating box 210 is not limited to the above embodiment, and the placing cavity may be formed by other ways, such as splicing a left box body and a right box body, or splicing a plurality of box bodies.
In this embodiment, as shown in fig. 2 and 3, the power transmission device 10 further includes a first mounting box 500, one end of the first mounting box 500 is rotatably connected to the second box body 214, the housing of the second driving mechanism 400 is fixedly disposed in the first mounting box 500, and the second rotary power output end 110 passes through the first mounting box 500 and the second box body 214 and is fixedly connected to the driving gear 220 in a transmission manner. By adopting the above structure, the first mounting box 500 is utilized to realize the mounting and fixing of the second driving mechanism 400, so that the second rotary power output end 110 can conveniently pass through the first mounting box 500 and the second box body 214 and coaxially and synchronously rotate with the driving gear 220; meanwhile, a waterproof structure (the splicing gap can be filled with waterproof materials, such as waterproof silica gel) is conveniently formed, and short circuit and even direct burning of the second driving mechanism 400 caused by wetting or rainwater immersion are avoided. The rotatable connection between the first mounting box 500 and the second box 214 can be realized in various ways, such as by using a bearing, or a shaft and a shaft sleeve.
Further, as shown in fig. 2 to 4, the power transmission device 10 further includes a second mounting box 600, the second mounting box 600 and the first mounting box 500 form a containing cavity 610, and all of the output gears 110 and the rotating box 210 can be rotatably disposed in the containing cavity 610. By adopting the structure, the first mounting box 500 and the second mounting box 600 can be used for forming the accommodating cavity 610 for mounting the protection output gear 110 and the rotating box 210, so that the accommodating cavity 610 can be used for storing lubricants, the rotating parts can rotate more stably and have less wear, and the service life of the mechanical transmission parts can be prolonged.
Still further, as shown in fig. 2 and 3, the power transmission device 10 further includes a third mounting box 700, the third mounting box 700 and the second box 214 cooperate to form a protection cavity 710, and the housing of the first driving mechanism 300 is fixedly disposed on an inner wall of the protection cavity 710. The first driving mechanism 300 is further installed and fixed, and meanwhile, a waterproof structure is formed by the protection cavity 710, so that the first driving mechanism 300 is prevented from short circuit or even directly burning out due to damp or rainwater immersion; further, the housing of the first driving mechanism 300 is fixedly disposed at the outer side of the second mounting box 600, and the first rotary power output end 310 penetrates through the second mounting box 600 and is fixedly connected with the connecting portion 202 in a transmission manner. Further, the first driving mechanism 300 is fixed and mounted, and the first rotary power output gear 110 is rotated coaxially and synchronously with the connection portion 202 of the first case 212 through the second mounting case 600. Meanwhile, due to the arrangement of the three mounting boxes (the first mounting box 500, the second mounting box 600 and the third mounting box 700), the integrity of the power transmission device 10 is improved, the linkage stability of mechanical transmission parts is enhanced, and the appearance of the power transmission device 10 is more attractive.
The beneficial effects of the specific embodiment of the invention are as follows:
1. the two driving mechanisms are adopted, so that a plurality of outputs can be obtained, and the number of the driving mechanisms is reduced; the cost and weight of the antenna are reduced.
2. Because the number of the two driving mechanisms is less, the control circuit board is relatively simple, and the program is also simple; the reliability of the electric downtilt angle regulation of the antenna is improved.
3. Because the system is designed integrally, the integrated assembly can be realized; the standardized and automatic assembly is easy to realize; the assembly efficiency is improved and the cost is reduced.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A power transmission device, comprising:
the output assembly comprises at least two rotatable output gears which are arranged at intervals along the circumferential direction of the same circumference;
the switching assembly comprises a rotating box which is rotatably arranged in the circumference, and a driving gear and a driven gear which are rotatably arranged in the rotating box, the rotating box is provided with a connecting part, the driving gear can drive the driven gear to rotate, and the driven gear can be selectively meshed with any one output gear through the rotating box;
the first driving mechanism is provided with a first rotary power output end which is fixedly connected with the connecting part of the rotating box in a transmission way; and
the second driving mechanism is provided with a second rotary power output end which is fixedly connected with the driving gear in a transmission way;
the first rotary power output end, the second rotary power output end, the rotating box and the driving gear rotate around the same axis, and the axis and the center line of the circumference are on the same straight line.
2. The power transmission device of claim 1, wherein the drive gear is in mesh with the driven gear.
3. The power transmission device of claim 1, wherein the drive gear rotates synchronously with the driven gear through a drive gear set.
4. The power transmission device according to any one of claims 1 to 3, wherein the rotating box comprises a first box body and a second box body which is matched with the first box body to form a mounting cavity, the first box body is provided with the connecting part, the driving gear and the driven gear are rotatably arranged in the mounting cavity, and the mounting cavity is provided with a notch; the driven gear is meshed with the inner side of the output gear through the notch.
5. The power transmission device according to claim 4, further comprising a first mounting box, wherein one end of the first mounting box is rotatably connected to the second box, the housing of the second driving mechanism is fixedly disposed in the first mounting box, and the second rotary power output end penetrates through the first mounting box and the second box and is fixedly connected to the driving gear in a transmission manner.
6. The power transmission device according to claim 5, further comprising a second mounting box forming an accommodation chamber with the first mounting box, all of the output gears and the rotation box being rotatably disposed in the accommodation chamber.
7. The power transmission device according to claim 6, wherein the housing of the first driving mechanism is fixedly arranged outside the second mounting box, and the first rotary power output end passes through the second mounting box and is fixedly connected with the connecting part in a transmission manner.
8. The power transmission device according to claim 6, further comprising a third mounting box, wherein the third mounting box and the second box cooperate to form a protection cavity, and the housing of the first driving mechanism is fixedly arranged on the inner wall of the protection cavity.
9. A phase adjustment system of a phase shifter, comprising the power transmission device as claimed in any one of claims 1 to 8, further comprising a telescopic assembly corresponding to the output gears one by one, and a controller, wherein the telescopic assembly comprises a drive screw rotating coaxially and synchronously with the output gears, and a nut sleeve engaged with the drive screw in a screw connection manner, the nut sleeve is provided with a mounting portion, and the controller is connected in communication with the first driving mechanism and the second driving mechanism.
10. The phase adjustment system of a phase shifter according to claim 9, wherein the output end of the output gear is provided with a sleeve, and the input end of the drive screw is provided with a clamp body which is in limit engagement with the sleeve.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711492789.7A CN108119611B (en) | 2017-12-30 | 2017-12-30 | Phase adjusting system of phase shifter and power transmission device thereof |
| PCT/CN2018/103070 WO2019128283A1 (en) | 2017-12-30 | 2018-08-29 | Phase adjustment system of phase shifter and power transmission device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711492789.7A CN108119611B (en) | 2017-12-30 | 2017-12-30 | Phase adjusting system of phase shifter and power transmission device thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108119611A CN108119611A (en) | 2018-06-05 |
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| CN108119611B (en) * | 2017-12-30 | 2020-04-14 | 京信通信技术(广州)有限公司 | Phase adjusting system of phase shifter and power transmission device thereof |
| CN116073129A (en) * | 2021-11-04 | 2023-05-05 | 中兴通讯股份有限公司 | Antenna phase adjusting device |
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| CN106838149B (en) * | 2017-03-17 | 2023-06-23 | 京信通信技术(广州)有限公司 | Transmission device and antenna downward inclination angle control system |
| CN108119611B (en) * | 2017-12-30 | 2020-04-14 | 京信通信技术(广州)有限公司 | Phase adjusting system of phase shifter and power transmission device thereof |
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- 2017-12-30 CN CN201711492789.7A patent/CN108119611B/en active Active
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| EP1939983A1 (en) * | 2005-06-02 | 2008-07-02 | Comba Telecom Technology (Guangzhou) Ltd. | Adjusting device for phase shifter of antenna in mobile communication |
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| CN201417809Y (en) * | 2009-05-20 | 2010-03-03 | 东莞市晖速天线技术有限公司 | Electric regulation antenna phase shifter |
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| WO2019128283A1 (en) | 2019-07-04 |
| CN108119611A (en) | 2018-06-05 |
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