CN106785438B - Transmission device and antenna downward inclination angle control system - Google Patents
Transmission device and antenna downward inclination angle control system Download PDFInfo
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- CN106785438B CN106785438B CN201710061678.4A CN201710061678A CN106785438B CN 106785438 B CN106785438 B CN 106785438B CN 201710061678 A CN201710061678 A CN 201710061678A CN 106785438 B CN106785438 B CN 106785438B
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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 relates to a transmission device and a control system of an antenna downward inclination angle, wherein the transmission device comprises a gear assembly, the gear assembly comprises an annular gear, a first gear coaxial with the annular gear and a second gear meshed with the first gear, the first gear is arranged on an input shaft, a first end of the second gear is meshed with the annular gear and can rotate or revolve, and a second end of the second gear is arranged outside the annular gear; the unidirectional control mechanism comprises a first unidirectional component, the first unidirectional component comprises a first rotating piece which can rotate unidirectionally along a first rotating direction, and the first rotating piece is fixedly connected with the annular gear; and the output assembly comprises at least two third gears which are arranged at intervals along the circumferential direction, and the second end of the second gear can be selectively meshed with any one of the third gears. The transmission device and the antenna downward inclination angle control system are small in size, compact in structure and low in production cost.
Description
Technical Field
The invention relates to the technical field of mobile communication equipment, in particular to a transmission device and a control system for the downward inclination angle of an antenna.
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.
Currently, the way to adjust the beam downtilt angle is divided into: mechanical downtilt and electronic downtilt, while electronic downtilt has obvious advantages, and is a current mainstream and a future development trend. The structure of the traditional electronic downtilt transmission device is complex, when the number of beams is large, the internal space of the antenna is large, the size of the whole transmission device is large, and the cost is greatly increased.
Disclosure of Invention
Based on this, it is necessary to provide a transmission device and a control system for the downtilt angle of an antenna, which can realize independent control of the downtilt angles of two or more beam antennas, and which has a compact structure, a small size and a low production cost.
The technical scheme is as follows:
a transmission, comprising: the gear assembly comprises an annular gear, a first gear coaxial with the annular gear and a second gear meshed with the first gear, the first gear is arranged on an input shaft, a first end of the second gear is meshed with the annular gear and can rotate or revolve, and a second end of the second gear is arranged outside the annular gear; the one-way control mechanism is fixed at a preset position and comprises a first one-way component, the first one-way component is arranged close to the annular gear, the first one-way component comprises a first rotating piece capable of rotating unidirectionally along a first rotating direction, and the first rotating piece is fixedly connected with the annular gear; the output assembly comprises at least two third gears which are arranged at intervals along the circumferential direction, and the second end of the second gear is arranged on the inner side of the third gears and can be selectively meshed with any one of the third gears.
When the transmission device is used, the input shaft is connected with the output end of the motor, and the first gear is driven to rotate by the input shaft; when the first gear drives the second gear to rotate along the reverse direction of the first rotating direction, the annular gear is fixedly connected with the first rotating member (the first rotating member cannot rotate along the reverse direction of the first rotating direction), and at the moment, the annular gear cannot rotate along the reverse direction of the first rotating direction, so that the second gear revolves along the direction of the first rotating direction, and further the second gear can revolve to the position according to the antenna position of the downward inclination angle which is required to be adjusted, and is meshed with the corresponding third gear; reversing the rotation direction of the input shaft, when the first gear drives the second gear to rotate along the first rotation direction, the inner gear ring can rotate along the first rotation direction (the first rotating piece can rotate along the first rotation direction), and the second gear rotates along the first rotation direction, so that the reverse rotation of the third gear along the first rotation direction can be realized, and the downward inclination angle of the antenna is adjusted; after the antenna downward inclination angle adjustment is completed, the rotation of the second gear can be stopped in time by stopping the input power and utilizing the unidirectional control mechanism; when the next adjustment is performed, the second gear revolves, and after the second gear reaches the position to be adjusted, the second gear rotates (revolution does not occur during rotation), so that the adjustment of the downward inclination angle of the corresponding antenna can be realized. The transmission device can realize independent control of the declination angles of two or more beam antennas, and has compact structure, small size and low production cost.
The technical scheme is further described as follows:
in one embodiment, the unidirectional control mechanism further includes a second unidirectional component disposed opposite the first unidirectional component, the second unidirectional component being disposed proximate to the second end of the second gear, the second unidirectional component including a second rotating member rotatable along a unidirectional rotation of the first rotational direction, the second gear being rotatably disposed on the second rotating member. Therefore, when the first gear drives the second gear to rotate along the reverse direction of the first rotating direction, the annular gear is fixedly connected with the first rotating member (the first rotating member cannot rotate along the reverse direction of the first rotating direction), at the moment, the annular gear cannot rotate along the reverse direction of the first rotating direction, and the second gear can only rotate along the first rotating direction, at the moment, the second gear can only revolve along the direction of the first rotating direction, and the second gear can revolve to the position according to the antenna position of the downward inclination angle which can be adjusted as required and is meshed with the corresponding third gear; reversing the rotation direction of the input shaft, when the first gear drives the second gear to rotate along the first rotation direction, the inner gear ring can rotate along the first rotation direction (the first rotating piece can rotate along the first rotation direction), and the second rotating piece cannot revolve along the opposite direction of the first rotation direction, so that the second gear can only rotate along the first rotation direction, and further the reverse rotation of the third gear along the first rotation direction can be realized, and the downward inclination angle of the antenna can be adjusted; after the antenna downward inclination angle adjustment is completed, the rotation of the second gear can be stopped in time by using the second unidirectional component after the input power is stopped; therefore, the second rotating member of the second unidirectional assembly can ensure that the second gear does not rotate when revolving.
In one embodiment, all third gears are equally spaced from the first gear. It is ensured that the second gear can be engaged with all the third gears, respectively.
In one embodiment, the first unidirectional assembly further comprises a third rotating member which is in sleeve joint fit with the first rotating member and can rotate unidirectionally relative to the first rotating member, and the third rotating member is fixed at a first preset position; the second unidirectional component further comprises a fourth rotating piece which is in sleeve joint fit with the second rotating piece and can rotate unidirectionally relative to the second rotating piece, and the fourth rotating piece is fixed at a second preset position. The first unidirectional component and the second unidirectional component are concretely implemented by unidirectional rotation mechanisms such as unidirectional clutches and the like.
In one embodiment, the first unidirectional component is a first unidirectional bearing, the first rotating member is an inner ring of the first unidirectional bearing, the third rotating member is an outer ring of the first unidirectional bearing, or the first rotating member is an outer ring of the first unidirectional bearing, the third rotating member is an inner ring of the first unidirectional bearing; the second unidirectional component is a second unidirectional bearing, the second rotating part is an inner ring of the second unidirectional bearing, the fourth rotating part is an outer ring of the second unidirectional bearing, or the second unidirectional component is a second unidirectional bearing, the second rotating part is an outer ring of the second unidirectional bearing, and the fourth rotating part is an inner ring of the second unidirectional bearing. Therefore, the revolution or rotation of the second gear can be realized by utilizing the unidirectional bearing, the response speed of the unidirectional shaft is high, and the adjustment precision is higher; the second gear and the inner gear ring are connected with the inner ring of the unidirectional bearing or the outer ring can be selected according to actual conditions, for example, when the outer ring is fixed, the inner ring is fixedly connected with the first rotating member, and when the inner ring is fixed, the outer ring is fixedly connected with the first rotating member; the specific manner of the first unidirectional bearing or the second unidirectional bearing at the preset position can be realized by the prior art, and will not be described herein.
In one embodiment, the inner gear ring is provided with a first connector, and the first rotating member is provided with a first clamping hole in a clamping fit with the connector. Therefore, through the clamping and fixing cooperation of the first connecting body and the first clamping hole, the fixed connection of the annular gear and the first rotating piece is realized, and the disassembly and the assembly are convenient.
In one embodiment, at least two first protrusions are arranged on the outer side of the first connector at intervals along the circumferential direction, and first clamping grooves which are clamped with the first protrusions are formed in the inner wall of the first clamping hole. Therefore, the at least two first bulges are respectively matched with the at least two first clamping grooves one by one, so that slipping between the annular gear and the first rotating piece can be effectively avoided, and the transmission precision is influenced.
In one embodiment, the first connector is provided with a first engagement hole that is in rotational engagement with the first end of the input shaft. Thus facilitating the mounting of the input shaft through the first mating hole.
In one embodiment, the transmission device further comprises a rotating box for internally arranging the first gear and the second gear, the rotating box is fixedly connected with the second rotating piece, the rotating box is rotatably arranged between the inner gear ring and the second rotating piece, the first gear is rotatably arranged in the rotating box, and the second gear is arranged in the rotating box. The second gear is installed by utilizing the rotating box, and meanwhile, the first gear and the second gear are convenient to lubricate and protect, so that the transmission life of the first gear and the second gear is prolonged.
In one embodiment, the rotating box is provided with a rotatable fourth gear, and the fourth gear is in operative connection with the first gear to rotate in the same direction. Therefore, the fourth gear is arranged for adjusting the downward inclination angle of the antenna, and the reverse transmission power output different from that of the second gear is provided, so that the bidirectional adjustment of the downward inclination angle of the antenna is conveniently realized; the synchronous rotation of the fourth gear and the first gear can make the fourth gear and the first gear rotate in the same direction through the engagement of the fourth gear and the second gear or the engagement of other transmission gears and the first gear and the fourth gear.
In one embodiment, the rotating box is further provided with a fifth gear, the fifth gear is meshed with the first ends of the first gear and the fourth gear, and the second end of the fourth gear is arranged on the outer side of the third gear and can be meshed with the third gear. Therefore, further, the power output in the same direction as the first gear is obtained through the cooperation between the first gear and the fifth gear as well as the fourth gear, and the power output in the opposite direction to the second gear is obtained, so that the downward inclination angle of the antenna is adjusted in the forward and reverse directions; specifically, an input shaft is connected with the output end of the motor, and the input shaft is used for driving the first gear to rotate; when the first gear drives the second gear to rotate along the reverse direction of the first rotating direction, the annular gear is fixedly connected with the first rotating member (the first rotating member cannot rotate along the reverse direction of the first rotating direction), and at the moment, the annular gear cannot rotate along the reverse direction of the first rotating direction, so that the second gear can only revolve along the direction of the first rotating direction (the second rotating member can rotate along the first rotating direction), and then the second gear drives the rotating box to rotate, so that the second gear or the fourth gear revolves to the position according to the antenna position of the downward inclination angle which can be adjusted as required and the adjustment requirement, and is meshed with the corresponding third gear; reversing the rotation direction of the input shaft, wherein the first gear drives the second gear to rotate along the first rotation direction and drives the fourth gear to rotate along the opposite direction of the first rotation direction, at the moment, the inner gear ring can rotate along the first rotation direction (the first rotating piece can rotate along the first rotation direction), the second rotating piece cannot revolve along the opposite direction of the first rotation direction, the second gear can only rotate along the first rotation direction or the fourth gear can only rotate along the opposite direction of the first rotation direction, so that the second gear can be meshed with the third gear or the fourth gear can be meshed with the third gear according to the requirement, and the downward inclination angle of the antenna can be adjusted in the forward and reverse directions; after the antenna downward inclination angle adjustment is completed, the rotation of the second gear can be stopped in time by stopping the input power and utilizing the unidirectional control mechanism; when the next adjustment is performed, the second gear revolves, and after the second gear reaches the position to be adjusted, the second gear rotates (revolution does not occur during rotation), so that the adjustment of the downward inclination angle of the corresponding antenna can be realized. Meanwhile, the arrangement of the rotating box is also convenient for lubrication and protection of the first gear, the second gear, the fourth gear and the fifth gear.
In one embodiment, the rotating box comprises a first box body and a second box body matched with the first box body to form a placement cavity, the first box body is provided with a first notch, a first end of the second gear is meshed with the inner gear ring through the first notch, the second box body is provided with a second notch and a third notch, a second end of the second gear is meshed with the third gear through the second notch, and the fourth gear is meshed with the third gear through the third notch. Therefore, the first box body and the second box body are arranged to facilitate the installation of the first gear, the second gear, the fifth gear and the fourth gear, and the later maintenance is also facilitated; meanwhile, the gears in the rotating box are better protected by arranging the first notch, the second notch and the third notch.
In one embodiment, the second box body is further provided with a second connector, and the second rotating member is provided with a second clamping hole in a clamping fit with the connector. Therefore, the second box body is fixedly connected with the second rotating piece through the clamping and fixing cooperation of the second connecting body and the second clamping hole, and meanwhile, the disassembly and the assembly are convenient.
In one embodiment, at least two second protrusions are arranged at the outer side of the second connector at intervals along the circumferential direction, and second clamping grooves which are clamped with the second protrusions are formed in the inner wall of the second clamping hole. Therefore, the at least two second bulges are respectively matched with the at least two second clamping grooves one by one, so that the slipping between the second box body and the second rotating piece can be effectively avoided, and the transmission precision is influenced.
In one embodiment, the second connector is further provided with a second engagement hole that is in rotational engagement with the second end of the input shaft. Thereby facilitating the installation of the input shaft through the second mating hole.
In one embodiment, the transmission device further comprises a first mounting plate provided with a first preset position, the first mounting plate is provided with a sensing element, and the rotating box is provided with a positioning rod capable of triggering the sensing element; the first unidirectional assembly is fixed at the first preset position on the first mounting plate. Therefore, the induction element is arranged on the first mounting plate, when the rotating box rotates, the guide rod is driven to move, the induction element can induce and send corresponding trigger signals to the control device, and then the initial position of the rotating box can be positioned or the initial position of the second gear or the initial position of the fourth gear can be positioned.
In one embodiment, the transmission device further comprises a second mounting plate provided with a second preset position, the second mounting plate is fixedly connected with the first mounting plate through a connecting rod, the second mounting plate is provided with a plurality of mounting through holes which are arranged at intervals along the same circumference, the mounting through holes are in running fit with the third gear, and the connecting end of the third gear passes through the mounting through holes and is arranged outside the second mounting plate; the second unidirectional assembly is fixed at the second preset position on the second mounting plate. Therefore, the gear assembly, the unidirectional control mechanism and the output assembly are connected into a whole through the cooperation of the second mounting plate and the first mounting plate, and the connection end of the third gear is convenient to connect with the connection mechanism of the antenna.
In one embodiment, the output assembly further comprises a fixing frame for mounting the third gear, and the fixing frame and the second mounting plate are matched to form a plurality of mounting positions which are uniformly arranged at intervals along the circumferential direction. Therefore, the fixing frame and the second mounting plate form a mounting position, so that the third gear is convenient to mount; meanwhile, on the aspect of keeping the original transmission structure and the whole size, more third gears can be arranged along the same circumference, so that adjustment of more frequency bands is realized.
The technical scheme also provides a control system of the antenna downtilt angle, which comprises the transmission device, a driving device and a controller, wherein the rotary output end of the driving device is connected with the input shaft, and the controller is electrically connected with the driving device.
According to the control system for the downtilt angle of the antenna, the controller is utilized to control the forward and reverse rotation of the output end of the driving device according to the requirement of the downtilt angle adjustment of the antenna, so that the first gear can be rotated forward or reversely along the first rotation direction, and the intelligent adjustment of the downtilt angle of the multi-beam antenna is convenient to realize.
Drawings
FIG. 1 is an exploded view of a transmission according to the present invention;
FIG. 2 is a schematic top view of a transmission according to the present invention;
FIG. 3 is a schematic front view of a transmission according to the present invention;
FIG. 4 is a schematic view of an assembly of a transmission according to the present invention;
FIG. 5 is a partial enlarged assembly schematic of the transmission of the present invention;
fig. 6 is an enlarged schematic representation of a partial explosion of a transmission according to the invention.
Reference numerals illustrate:
100. gear assembly, 110, ring gear, 112, first connecting body, 114, first mating hole, 120, first gear, 130, second gear, 132, first end of second gear, 134, second end of second gear, 210, first unidirectional assembly, 212, first rotary member, 201, first clamping hole, 202, first clamping groove, 214, third rotary member, 220, second unidirectional assembly, 222, second rotary member, 204, second clamping hole, 205, second clamping groove, 224, fourth rotary member, 300, output assembly, 310, third gear, 312, a connecting end, 320, a fixing frame, 322, a mounting position, 400, a rotating box, 410, a first box body, 412, a first notch, 420, a second box body, 421, a second notch, 422, a third notch, 423, a second connecting body, 424, a second protrusion, 425, a second matching hole, 430, a positioning rod, 500, a fourth gear, 510, a first end of the fourth gear, 520, a second end of the fourth gear, 600, a fifth gear, 700, a first mounting plate, 710, an annular groove, 800, a second mounting plate, 810, a mounting through hole, 10 and an input shaft.
Detailed Description
The present invention will be further described in detail with reference to the drawings and the detailed description, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the detailed description and specific examples 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 "mounted," "disposed" or "connected" 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 one element is considered as being "fixedly connected" to another element, the other element may be detachably fixed by fastening, fastening by screwing, fastening by riveting, or may be non-detachably fixed by welding, integrally forming, or the like. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
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. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
The terms "first" and "second" in this specification do not denote a particular quantity or order, but rather are used for distinguishing between similar or identical items.
As shown in fig. 1 to 4, a transmission device according to the present invention includes: the gear assembly 100, the gear assembly 100 includes an annular gear 110, a first gear 120 coaxial with the annular gear 110, and a second gear 130 meshed with the first gear 120, the first gear 120 is installed on the input shaft 10, a first end 132 of the second gear is meshed with the annular gear 110 and can rotate or revolve, and a second end 134 of the second gear is arranged outside the annular gear 110; a unidirectional control mechanism (not shown), the unidirectional control mechanism being fixed at a preset position, the unidirectional control mechanism comprising a first unidirectional assembly 210, the first unidirectional assembly 210 being disposed adjacent to the ring gear 110, the first unidirectional assembly 210 comprising a first rotating member 212 capable of unidirectional rotation in a first rotational direction, the first rotating member 212 being fixedly connected with the ring gear 110; and an output assembly 300, the output assembly 300 comprising at least two third gears 310 circumferentially spaced apart, the second ends 134 of the second gears being disposed inboard of the third gears 310 and selectively engageable with any one of the third gears 310.
As shown in fig. 1 to 4, when the transmission device is used, the input shaft 10 is connected to the output end of the motor, and the first gear 120 is driven to rotate by the input shaft 10; when the first gear 120 drives the second gear 130 to rotate in the opposite direction of the first rotation direction, the ring gear is fixedly connected with the first rotating member 212 (the first rotating member 212 cannot rotate in the opposite direction of the first rotation direction), at this time, the ring gear 110 cannot rotate in the opposite direction of the first rotation direction, the second gear 130 revolves in the first rotation direction, and the second gear 130 revolves to the position according to the antenna position of the downward inclination angle that needs to be adjusted, and is meshed with the corresponding third gear 310; reversing the rotation direction of the input shaft 10, when the first gear 120 drives the second gear 130 to rotate along the first rotation direction, the ring gear 110 can rotate along the first rotation direction, and the second gear 130 rotates along the first rotation direction, so that the reverse rotation of the third gear 310 along the first rotation direction can be realized, and the downward inclination angle of the antenna can be adjusted; after the antenna downward inclination angle adjustment is completed, the rotation of the second gear 130 can be stopped in time by stopping the input power and utilizing the unidirectional control mechanism; when the next adjustment is performed, the second gear 130 is made to revolve, and after the second gear 130 reaches the position to be adjusted, the second gear 130 is made to rotate (revolution does not occur during rotation), so that the adjustment of the downward inclination angle of the corresponding antenna can be realized. The transmission device can realize independent control of the declination angles of two or more beam antennas, and has compact structure, small size and low production cost.
As shown in fig. 1 to 4, the transmission device further includes a rotation box 400 for housing the first gear 120 and the second gear 130, the rotation box 400 is fixedly connected with the second rotating member 222, and rotatably disposed between the ring gear 110 and the second rotating member 222, the first gear 120 is rotatably disposed in the rotation box 400, and the second gear 130 is mounted in the rotation box 400. Thus, the rotation box 400 is utilized to mount the second gear 130, and also facilitates lubrication and protection of the first gear 120 and the second gear 130, thereby improving the transmission life of the first gear 120 and the second gear 1130. Further, the rotating case 400 is provided with a rotatable fourth gear 500, and the fourth gear 500 is in operative connection with the first gear 120 to rotate in the same direction. Therefore, by arranging the fourth gear 500 for adjusting the downward inclination angle of the antenna, the reverse transmission power output different from that of the second gear 130 is provided, so that the bidirectional adjustment of the downward inclination angle of the antenna is convenient to realize; the synchronous rotation of the fourth gear 500 and the first gear 120 may cause the fourth gear 500 and the first gear 120 to rotate in the same direction by the engagement of the fourth gear 500 and the second gear 130 or the engagement of other transmission gears and the first gear 120 and the fourth gear 500. Still further, the rotary case 400 is further provided with a rotatable fifth gear 600, the fifth gear 600 being engaged with the first gear 120 and the first end 510 of the fourth gear 500, and the second end 520 of the fourth gear 500 being disposed outside the third gear 310 and being selectively engaged with the third gear 310. Therefore, the power output in the same direction as the first gear 120 is obtained through the cooperation between the first gear 120 and the fifth gear 600 and the fourth gear 500, and the power output in the opposite direction to the second gear 130 is obtained, so that the antenna downtilt angle can be adjusted in the forward and reverse directions; specifically, the input shaft 10 is connected with the output end of the motor, and the first gear 120 is driven to rotate by the input shaft 10; when the first gear 120 drives the second gear 130 to rotate in the opposite direction of the first rotation direction, the ring gear 110 is fixedly connected with the first rotating member 212 (the first rotating member 212 cannot rotate in the opposite direction of the first rotation direction), and at this time, the ring gear 110 cannot rotate in the opposite direction of the first rotation direction, so that the second gear 130 can only revolve in the opposite direction of the first rotation direction (the second rotating member can rotate in the first rotation direction), and the second gear 130 drives the rotating box 400 to rotate, so that the second gear 130 or the fourth gear 500 revolves to the position according to the antenna position of the downtilt angle to be adjusted and the adjustment requirement, and is meshed with the corresponding third gear 310, and further the adjustment of the downtilt angle of the antenna in the opposite direction can be realized; reversing the rotation direction of the input shaft 10, the first gear 120 drives the second gear 130 to rotate along the first rotation direction and drives the fourth gear 500 to rotate along the opposite direction of the first rotation direction, at this time, the ring gear 110 can rotate along the first rotation direction, the second rotating member 222 cannot rotate along the opposite direction of the first rotation direction, and the second gear can only rotate along the first rotation direction and does not revolve, so that the second gear 130 and the third gear 310 can be meshed or the fourth gear 500 and the third gear 310 can be meshed as required, and the downward inclination angle of the antenna can be adjusted in the forward and reverse directions; after the antenna downward inclination angle adjustment is completed, the rotation of the second gear 130 can be stopped in time by stopping the input power and utilizing the unidirectional control mechanism; when the next adjustment is performed, the second gear 130 is made to revolve, and after the second gear 130 reaches the position to be adjusted, the second gear 130 is made to rotate (revolution does not occur during rotation), so that the adjustment of the downward inclination angle of the corresponding antenna can be realized. The arrangement of the rotary case 400 also facilitates lubrication and protection of the first gear 120, the second gear 130, the fourth gear 500, and the fifth gear 600.
As shown in fig. 1, 2, 5 and 6, in the above embodiment, the unidirectional control mechanism further includes a second unidirectional component 220 disposed opposite to the first unidirectional component 210, the second unidirectional component 220 is disposed near the second end 134 of the second gear, the second unidirectional component 220 includes a second rotating member 222 capable of unidirectional rotation along the first rotation direction, and the second gear 130 is rotatably disposed on the second rotating member 222. When the first gear 120 drives the second gear 130 to rotate in the opposite direction of the first rotation direction, the ring gear is fixedly connected with the first rotating member 212 (the first rotating member 212 cannot rotate in the opposite direction of the first rotation direction), at this time, the ring gear 110 cannot rotate in the opposite direction of the first rotation direction, and the second rotating member 222 can rotate in the first rotation direction, so that the second gear 130 can only revolve in the first rotation direction, and the second gear 130 can revolve to the position according to the antenna position of the downtilt angle that can be adjusted as required and is meshed with the corresponding third gear 310; when the rotation direction of the input shaft 10 is reversed and the first gear 120 drives the second gear 130 to rotate along the first rotation direction, the ring gear 110 can rotate along the first rotation direction, but the second rotating member 222 cannot rotate along the opposite direction of the first rotation direction, so that the second gear 130 can only rotate along the first rotation direction, further the reverse rotation of the third gear 310 along the first rotation direction can be realized, and the downward inclination angle of the antenna can be adjusted; after the antenna downward inclination angle adjustment is completed, the rotation of the second gear 130 can be stopped in time by stopping the input power and utilizing the unidirectional control mechanism; when the next adjustment is performed, the second gear 130 is made to revolve, and after the second gear 130 reaches the position to be adjusted, the second gear 130 is made to rotate (revolution does not occur during rotation), so that the adjustment of the downward inclination angle of the corresponding antenna can be realized; therefore, the second rotation member 222 of the second unidirectional member 220 can ensure that the second gear 130 does not rotate when revolving. Further, the first unidirectional assembly 210 further includes a third rotating member 214 that is in socket fit with the first rotating member 212 and can rotate unidirectionally relative to the first rotating member 212, and the third rotating member 214 is fixed at a first preset position; the second unidirectional assembly 220 further includes a fourth rotating member 224 that is in socket engagement with the second rotating member 222 and is unidirectional rotatable with respect to the second rotating member 222, the fourth rotating member 224 being fixed in a second predetermined position. Embodiments of the first unidirectional component 210 and the second unidirectional component 220 include unidirectional rotation mechanisms such as a unidirectional clutch; the first preset position and the second preset position can be selected according to the fixing modes of the first unidirectional component and the second unidirectional component, for example, the first preset position is arranged on the mounting plate so as to fix the first unidirectional component or fix the first unidirectional component on the first preset position of other fixed objects through other connecting pieces; the second unidirectional component can be fixed on a second preset position of other fixed objects through other connecting pieces in the same way so as to meet unidirectional control of the annular gear and the second gear. Preferably, the first unidirectional component 210 is a first unidirectional bearing, the first rotating member 212 is an inner ring of the first unidirectional bearing, the third rotating member 214 is an outer ring of the first unidirectional bearing, or the first rotating member 212 is an outer ring of the first unidirectional bearing, and the third rotating member 214 is an inner ring of the first unidirectional bearing; the second unidirectional component 220 is a second unidirectional bearing, the second rotating member 222 is an inner ring of the second unidirectional bearing, the fourth rotating member 224 is an outer ring of the second unidirectional bearing, or the second unidirectional component 220 is a second unidirectional bearing, the second rotating member 222 is an outer ring of the second unidirectional bearing, and the fourth rotating member 224 is an inner ring of the second unidirectional bearing. Therefore, the revolution or rotation of the second gear 130 can be realized by the unidirectional bearing, and the response speed of the unidirectional shaft is high, so that the adjustment precision is higher; the connection between the second gear 130 and the inner gear ring 110 and the inner ring of the unidirectional bearing or the connection between the outer ring of the unidirectional bearing can be selected according to practical situations, for example, when the outer ring is fixed, the inner ring is fixedly connected with the first rotating member 212, and when the inner ring is fixed, the outer ring is fixedly connected with the first rotating member 212; the specific manner of the first unidirectional bearing or the second unidirectional bearing at the preset position can be realized by the prior art, and will not be described herein.
As shown in fig. 1, 3, 5 and 6, in the above embodiment, the ring gear 110 is provided with the first connecting body 112, and the first rotating member 212 is provided with the first locking hole 201 that is snap-fitted with the first connecting body 112. Therefore, through the clamping fit of the first connecting body 112 and the first clamping hole 201, the fixed connection between the annular gear 110 and the first rotating member 212 is realized, and the disassembly and assembly are convenient. Further, at least two first protrusions (not shown) are disposed at intervals along the circumferential direction on the outer side of the first connector 112, and a first clamping groove 202 engaged with the first protrusions is disposed on the inner wall of the first clamping hole 201. Therefore, the at least two first protrusions are respectively engaged with the at least two first clamping grooves 202 one by one, so that the slipping between the ring gear 110 and the first rotating member 212 can be effectively avoided, and the transmission accuracy is affected.
Further, the first coupling body 112 is provided with a first fitting hole 114 that is rotatably fitted with the first end of the input shaft 10; the second coupling body 423 is further provided with a second coupling hole 425 rotatably coupled to the second end of the input shaft 10. Thus facilitating the mounting of the input shaft 10 through the first mating holes 114 and the second mating holes 425, enabling rotatable mounting of the input shaft 10.
As shown in fig. 1, 4, 5 and 6, in the above embodiment, the rotary case 400 includes a first case 410 and a second case 420 that cooperates with the first case 410 to form a placement cavity, the first case 410 is provided with a first notch 412, the first end 132 of the second gear is engaged with the ring gear 110 through the first notch 412, the second case 420 is provided with a second notch 421 and a third notch 422, the second end 134 of the second gear is engaged with the third gear 310 through the second notch 421, and the fourth gear 500 is engaged with the third gear 310 through the third notch 422. Therefore, the first and second cases 410 and 420 facilitate the installation of the first, second, fifth and fourth gears 120, 130, 600 and 500, and facilitate the maintenance of the later stage; meanwhile, the gears in the rotating box 400 are better protected by arranging the first notch 412, the second notch 421 and the third notch 422. Moreover, the method is also applicable to the field of the present invention. Specifically, the first gear 120 is rotatably disposed in the rotation box 400, and the second gear 130, the fifth gear 600 and the fourth gear 500 are respectively installed in the rotation box 400. Thus, reliable mounting engagement of the first gear 120, the second gear 130, the fifth gear 600 and the fourth gear 500 is achieved.
As shown in fig. 1, 3 and 4, in the above embodiment, the transmission device further includes a first mounting plate 700 provided with a first preset position (not shown), the first mounting plate 700 is provided with a sensing element (not shown), and the rotating case 400 is provided with a positioning rod 430 capable of triggering the sensing element; first unidirectional assembly 210 is secured to first mounting plate 700. Therefore, by arranging the sensing element on the first mounting plate, when the rotating box 400 rotates, the guide rod 430 is driven to move in the annular groove 710, so that the guide rod 430 can be sensed by the sensing element and sends a corresponding trigger signal to the control device, and then the initial position of the rotating box 400 or the initial position of the second gear 130 or the initial position of the fourth gear 500 can be positioned by program control, so that the position relation between the second gear 130 and a certain third gear 310 or the position relation between the fourth gear 500 and a certain third gear 310 can be conveniently adjusted; the sensing element can be a photoelectric detection sensor or a displacement distance detection sensor, and the specific mode of realizing the positioning by matching the sensing element with the positioning rod can be realized by the prior art, and is not repeated here; while mounting of first unidirectional assembly 210 is accomplished using first mounting plate 700. Further, the transmission device further comprises a second mounting plate 800 provided with a second preset position, the second mounting plate 800 is fixedly connected with the first mounting plate 700 through a connecting rod, the second mounting plate 800 is provided with a plurality of mounting through holes 810 which are arranged along the same circumference at intervals, the mounting through holes 810 are in running fit with the third gear 310, and the connecting end 312 of the third gear 310 passes through the mounting through holes 810 and is arranged outside the second mounting plate 800; the second unidirectional assembly 220 is secured to a second mounting plate 800 at a second predetermined position. Thus, the gear assembly 100, the unidirectional control mechanism and the output assembly 300 are integrally connected by the cooperation of the second mounting plate 800 and the first mounting plate 700, while facilitating the connection of the connection end 312 of the third gear 310 with the connection mechanism of the antenna. Still further, the output assembly 300 further includes a fixing frame 320 for mounting the third gear 310, and the fixing frame 320 cooperates with the second mounting plate 800 to form a plurality of mounting positions 322 uniformly spaced apart along the circumferential direction. Thus, the fixing frame 320 and the second mounting plate 800 form a mounting position 322, so that the third gear 310 is convenient to mount; meanwhile, on the aspect of keeping the original transmission structure and the whole size, more third gears 310 can be arranged along the same circumference, so that adjustment of more frequency bands is realized.
The invention also provides a control system of the antenna downtilt angle, which comprises the transmission device, a driving device (not shown) and a controller (not shown), wherein the rotating output end of the driving device is connected with the input shaft 10, and the controller is electrically connected with the driving device. According to the antenna downtilt angle control system, the controller is utilized to control the forward and reverse rotation of the output end of the driving device according to the requirement of antenna downtilt angle adjustment, so that the first gear 120 can be rotated forward or reversely along the first rotation direction, and the intelligent adjustment of the downtilt angle of the multi-beam antenna is convenient to realize; simultaneously, the transmission device is utilized to realize independent control of the declination angles of two or more beam antennas, and the device has compact structure, small size and low production cost.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (12)
1. A transmission, comprising:
the gear assembly comprises an annular gear, a first gear coaxial with the annular gear and a second gear meshed with the first gear, the first gear is arranged on an input shaft, a first end of the second gear is meshed with the annular gear and can rotate or revolve, and a second end of the second gear is arranged outside the annular gear;
the one-way control mechanism is fixed at a preset position and comprises a first one-way component, the first one-way component is arranged close to the annular gear, the first one-way component comprises a first rotating piece capable of rotating unidirectionally along a first rotating direction, and the first rotating piece is fixedly connected with the annular gear; a kind of electronic device with high-pressure air-conditioning system
The output assembly comprises at least two third gears which are arranged at intervals along the circumferential direction, and the second end of the second gear is arranged on the inner side of the third gears and can be selectively meshed with any one of the third gears;
and the fourth gear is in operative connection with the first gear to rotate in the same direction, and the second end of the fourth gear is arranged on the outer side of the third gear and is selectively in operative connection with the third gear which is meshed with the second gear.
2. The transmission of claim 1, wherein the unidirectional control mechanism further comprises a second unidirectional assembly disposed opposite the first unidirectional assembly, the second unidirectional assembly disposed proximate a second end of the second gear, the second unidirectional assembly comprising a second rotatable member rotatable in a unidirectional direction of the first rotation, the second gear rotatably disposed on the second rotatable member.
3. The transmission of claim 2, wherein the first unidirectional assembly further comprises a third rotational member that is in socket engagement with the first rotational member and is unidirectional rotatable relative to the first rotational member, the third rotational member being fixed in a first predetermined position; the second unidirectional component further comprises a fourth rotating piece which is in sleeve joint fit with the second rotating piece and can rotate unidirectionally relative to the second rotating piece, and the fourth rotating piece is fixed at a second preset position.
4. A transmission according to claim 3, wherein the first unidirectional component is a first unidirectional bearing, the first rotating member is an inner race of the first unidirectional bearing, the third rotating member is an outer race of the first unidirectional bearing, or the first rotating member is an outer race of the first unidirectional bearing, the third rotating member is an inner race of the first unidirectional bearing; the second unidirectional component is a second unidirectional bearing, the second rotating part is an inner ring of the second unidirectional bearing, the fourth rotating part is an outer ring of the second unidirectional bearing, or the second unidirectional component is a second unidirectional bearing, the second rotating part is an outer ring of the second unidirectional bearing, and the fourth rotating part is an inner ring of the second unidirectional bearing.
5. The transmission device according to claims 2 to 4, further comprising a rotation case for housing the first gear and the second gear, the rotation case being fixedly connected to the second rotating member and rotatably provided between the ring gear and the second rotating member, the first gear being rotatably provided in the rotation case, the second gear being mounted in the rotation case.
6. The transmission of claim 5, wherein the rotating case is provided with the fourth gear rotatably.
7. The transmission of claim 5, wherein the rotating case is further provided with a fifth gear, the fifth gear being meshed with the first ends of the first gear and the fourth gear.
8. The transmission of claim 7, wherein the rotating case comprises a first case and a second case that cooperates with the first case to form a placement cavity, the first case is provided with a first notch, a first end of the second gear is engaged with the ring gear through the first notch, the second case is provided with a second notch and a third notch, a second end of the second gear is engaged with the third gear through the second notch, and the fifth gear is engaged with the third gear through the third notch.
9. The transmission of claim 5, further comprising a first mounting plate having a first predetermined position, the first mounting plate having an inductive element, the rotating box having a positioning lever that triggers the inductive element; the first unidirectional assembly is fixed at the first preset position on the first mounting plate.
10. The transmission device according to claim 9, further comprising a second mounting plate provided with a second preset position, wherein the second mounting plate is fixedly connected with the first mounting plate through a connecting rod, the second mounting plate is provided with a plurality of mounting through holes which are arranged at intervals along the same circumference, the mounting through holes are in rotary fit with the third gear, and the connecting end of the third gear passes through the mounting through holes and is arranged outside the second mounting plate; the second unidirectional assembly is fixed at the second preset position on the second mounting plate.
11. The transmission of claim 10, wherein the output assembly further comprises a mount for mounting the third gear, the mount cooperating with the second mounting plate to form a plurality of mounting locations disposed at circumferentially uniform intervals.
12. A control system for downtilt of an antenna, comprising the transmission device of any one of claims 1 to 11, further comprising a drive device and a controller, wherein a rotational output of the drive device is connected to the input shaft, and the controller is electrically coupled to the drive device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710061678.4A CN106785438B (en) | 2017-01-26 | 2017-01-26 | Transmission device and antenna downward inclination angle control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710061678.4A CN106785438B (en) | 2017-01-26 | 2017-01-26 | Transmission device and antenna downward inclination angle control system |
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| CN106785438A CN106785438A (en) | 2017-05-31 |
| CN106785438B true CN106785438B (en) | 2023-08-08 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108092002B (en) * | 2017-12-29 | 2023-12-22 | 京信通信技术(广州)有限公司 | Antenna electric downtilt angle control device |
| CN108321537B (en) * | 2017-12-29 | 2023-05-30 | 京信通信技术(广州)有限公司 | Antenna electric downtilt angle control device |
| CN108180259A (en) * | 2018-02-08 | 2018-06-19 | 罗森伯格技术（昆山）有限公司 | A kind of antenna drive device |
| CN111029778B (en) * | 2019-12-06 | 2021-10-29 | 京信通信技术(广州)有限公司 | Electric tuning control system, electric tuning control device and electric tuning control method of multi-frequency antenna |
| CN114050415B (en) * | 2021-11-08 | 2022-08-05 | 中山市粤为科技有限公司 | Transmission device capable of selecting output shaft and antenna apparatus using the same |
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| CN106785438A (en) | 2017-05-31 |
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