CN205350213U - A kind of antenna transmission device and antenna - Google Patents

Abstract

An antenna transmission device includes a housing composed of an upper cover and a lower cover, an input shaft and at least two groups of output shafts rotatably installed between the upper cover and the lower cover, and further includes a planetary wheel position selection component and a one-way control component; each group of output shafts includes an output shaft and an auxiliary shaft that cooperates with the output shaft in transmission; the planetary wheel position selection component includes a planetary wheel; the one-way control component can control the planetary wheel to achieve position selection and positioning; only one motor can achieve position selection and bidirectional rotation output of the output shaft. The antenna transmission device of the utility model has a simple structure, light weight, stability, and is easy to operate.

Description

A kind of antenna transmission device and antenna

technical field

The utility model belongs to the field of mobile communication antennas, in particular to a transmission device for a base station antenna phase shifter.

Background technique

In mobile communication technology, it is necessary to adjust the radiation angle of the base station antenna to cover different mobile communication areas, usually by using an antenna transmission mechanism or a remote electric adjustment device to adjust the antenna. The antenna actuator has a significant impact on the cost, weight and size of the antenna. Most of the phase shifters for base station antennas currently on the market are driven by one motor, which is costly, heavy, and takes up a lot of space, and has disadvantages such as complex structure, difficult production, and high cost.

Utility model content

The technical problem solved by the utility model is to provide an antenna transmission device, which aims to solve the problems of the prior art antenna transmission device with a large number of motors, large volume and weight, complex structure, and inability to adjust the phase shifter in both directions.

The technical solution of the present utility model: provide an antenna transmission device, including a casing composed of an upper cover and a lower cover, an input shaft and at least two sets of output shafts rotatably installed between the upper cover and the lower cover; The antenna transmission device further includes a planetary wheel position selection assembly and a one-way control assembly; each set of output shafts includes an output shaft and an auxiliary shaft that is driven and matched with it; the planetary wheel position selection assembly includes a planetary wheel; the single The planetary gear can be controlled by the steering control assembly: when driven by the input shaft to rotate in the first rotation direction, it moves along the track surrounded by each set of output shafts to a predetermined position that can be driven and matched with any set of output shafts, so as to select position, or when driven by the input shaft to rotate in the second rotation direction of the opposite rotation direction, it will rotate at the aforementioned predetermined position and drive the corresponding output shaft to rotate and output; The output shafts or auxiliary shafts in the set of output shafts are driven and matched to obtain the two-way rotation output of the output shafts respectively; the one input shaft can be driven by external power to rotate in two directions, and correspondingly drive the planetary wheels in the first The rotational direction is turned or the second rotational direction is turned.

Further, the transmission cooperation between the planetary gear, the input shaft and each set of output shafts is gear meshing transmission cooperation.

Further, the planetary gear, the input shaft and each set of output shafts are respectively cylindrical gear shafts, and the upper and lower ends of the gear shafts correspond to the upper cover and the lower cover; the output shafts in each set of output shafts The upper and lower ends of the auxiliary shaft and the auxiliary shaft are respectively rotatably sleeved in the support holes provided on the upper cover and the lower cover; the lower ends of the output shafts in each set of output shafts protrude out of the support holes of the lower cover for rotational output; The upper and lower ends of the input shaft are respectively rotatably sleeved in the central holes provided on the upper cover and the lower cover; the input shaft and the output shaft are parallel to each other.

Further, the planetary gear selection assembly further includes a ring gear, the side wall of the ring gear is provided with an axially parallel rack; the planetary gear is meshed with the ring gear; the one-way control assembly controls the tooth The circle rotates in one direction; when the planetary gear rotates in the first rotational direction, the ring gear and the output shaft are non-rotatably matched with the planetary gear; when the planetary gear rotates in the opposite direction, the ring gear And the output shaft is rotatably engaged with the planetary gear.

Further, the ring gear is an inner ring gear, and the rack is arranged on the annular inner side wall of the inner ring gear; the planetary gear is located inside the ring ring of the inner ring gear, and the lower end of the star gear meshes with the inner ring gear; the The output shafts of each group are arranged on the periphery of the ring gear, and the upper ends of the star gear positions can respectively mesh with the output shafts of each group; the input shaft is located at the center of the ring gear and meshes with the planetary gears.

Further, a chassis is fixed on the lower end surface of the ring gear, and the chassis covers the lower end surface of the ring gear; a central hole is provided in the center of the chassis, and the lower end of the input shaft is passed through the central hole.

Further, the one-way control assembly includes several one-way blocks and a one-way gear; the one-way blocks are clamped between the tooth gaps of the gears and can be rotated in one direction relative to each other, while clamping with the one-way gear in the opposite direction. The one-way gear is matched; the one-way block is installed on the lower end surface of the ring gear chassis and rotates synchronously with the ring gear chassis; the one-way gear is fixed on the lower cover; the one-way gear center A central hole is provided; a cylindrical boss formed in the center of the chassis can be relatively rotatably sleeved in the central hole of the one-way gear; the lower end of the output shaft can pass through the central hole of the chassis relatively rotatably, In the cylindrical boss and the center hole of the one-way gear.

Further, the planet wheel position selection assembly further includes a planet carrier supporting the planet wheel; a center hole bearing sleeve is arranged in the center of the planet carrier; the center hole bearing sleeve of the planet carrier is rotatably sleeved on the bottom of the chassis Center hole; the lower end of the input shaft can be relatively rotatably passed through the center hole bearing sleeve of the planet carrier and the center hole of the chassis; the planet carrier is a frame-shaped support structure, including the bottom and shafts at both ends of the bottom The two side arms are formed by extending upward in parallel; the two side arms form a certain angle and are parallel to the input shaft; the two side arms are respectively bearings that can relatively rotate and support the planetary wheel and are used as a relative indicator of the planetary wheel The position selection mark; the lower end of the planetary wheel can be sleeved on the bearing of the planetary carrier in a relatively rotatable manner, and the upper end of the planetary wheel is provided with a ball thimble; the upper cover is provided with a number of one-way positioning holes; Each of the one-way positioning holes includes a one-way sliding surface facing the same direction; when the planetary wheel rotates in the first rotation direction, it can be arranged along each one-way positioning hole in the direction of the one-way sliding surface by means of the ball thimble at its upper end. The trajectory moves to a predetermined positioning hole; when the planetary wheel rotates in a second rotational direction opposite to the first rotational direction, the planetary wheel can be defined by the one-way positioning hole in the positioning hole and rotate in the second rotational direction And meshes with the corresponding output shaft or auxiliary shaft.

Further, the upper cover is provided with an annular protruding part as a moving channel for the position selection mark; the annular protruding part is provided with a zero position monitoring part of the position selection mark, and the zero position monitoring part is provided with a The position selection of the output shaft is realized by controlling the number of rotations of the planetary carrier through a program that senses the passage of the position selection mark and records it as a zero position sensor.

Further, the utility model also provides a mobile antenna, which includes several phase shifters and the above-mentioned antenna transmission device, each phase shifter is connected to the output shaft of the antenna transmission device through a connection mechanism, and the output The rotational output of the shaft adjusts the phase shifter accordingly.

The technical effect of the utility model: the utility model controls the movement of any output shaft through a drive motor, and realizes the position selection and rotation output of the output gear shaft through the positive and negative rotation of the motor, and the output shaft has a fast response time and a compact structure. Light weight, high reliability, can save the number of motors, and significantly reduce the cost of the antenna.

Description of drawings

Fig. 1 is a schematic diagram of the adjustment principle of the mobile communication antenna phase shifter according to the embodiment of the present invention.

Fig. 2 is another view of the adjustment principle of the phase shifter in the embodiment of the present invention.

Fig. 3 is a perspective view of the antenna transmission device according to the embodiment of the present invention.

Fig. 4 is another perspective view of the antenna transmission device according to the embodiment of the present invention.

Fig. 5 is an exploded view of the antenna transmission device of the embodiment of the present invention.

Fig. 6 is a perspective view of the internal structure of the antenna transmission device according to the embodiment of the present invention.

Fig. 7 is a perspective view from another angle of view of the internal structure of the antenna transmission device according to the embodiment of the present invention.

Fig. 8 is a perspective view of the upper cover of the antenna transmission device according to the embodiment of the present invention.

Fig. 9 is a perspective view of the one-way gear of the antenna transmission device according to the embodiment of the present invention.

Fig. 10 is a perspective view of the chassis of the antenna transmission device according to the embodiment of the present invention, wherein Fig. 10(a) and Fig. 10(b) are different perspectives.

detailed description

In order to make the purpose, technical solutions and beneficial effects of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the protection scope of the utility model.

In order to illustrate the technical solution described in the utility model, the following specific examples will be used for illustration.

Please refer to Figure 1-2, the mobile communication antenna 200 is provided with a plurality of phase shifters 202, in order to obtain better radiation characteristics and electrical characteristics, it is necessary to adjust the phase of the phase shifter 202, the adjustment of the phase shifter is This is achieved by the antenna actuator 100 . Each phase shifter 202 is correspondingly connected to the output shaft 10 in the antenna transmission device 100 through the pull rod 201, and the rotation output of the output shaft 10 of the transmission device 100 drives the pull rod 201 to move, and finally adjusts the lower position of the corresponding phase shifter 202 accordingly. tilt angle to obtain specific radiation characteristics. A phase shifter interface 203 is provided at the top of each tie rod 201 for connecting each phase shifter 202 . The transmission device 100 will be described in detail below.

Please refer to Figure 3-10, the embodiment of the utility model provides an antenna transmission device 100, including:

The shell 1 includes upper covers 11 and 12 that cover each other to form a cavity to accommodate various parts;

Power assembly 2: the motor represented by the input gear 20, the input gear shaft 30 as the central axis;

Several sets of output shafts 3: each set of output shafts includes an output gear shaft 10 and an auxiliary gear shaft 10', and the two can be meshed for transmission and cooperation;

Position selection component 4: planetary gear 40, planet carrier 50 provided with central hole 54, ring gear 60 provided with chassis 70;

One-way control assembly 8: several one-way blocks 80, one-way gear 90 with central hole 91.

The housing 1 of the transmission device 100 of the embodiment of the utility model includes upper and lower covers 11, 12, and the end faces of the upper and lower covers 11, 12 respectively have support holes 13, which are mainly used to support and fix the output gear shaft 10 and the auxiliary gear shaft 10'. The upper and lower covers 11 and 12 contain a planetary gear assembly 2 for position selection. The planetary gear assembly 2 includes a planetary gear 40 driven by an input shaft 30, a planetary carrier 50 and a ring gear 60. In addition, a ball is inserted into the upper end of the planetary gear 40. The lower part of the thimble 41 and the ring gear 60 is a chassis 70, and the ring gear 60 and the chassis 70 are fixedly connected as one by the ring gear fixing shaft 75. The planetary gear 40 meshes with the ring gear 60 and any one of the five sets of output shafts 3 at the same time, and the output shaft sets 3 are circumferentially distributed on the upper part of the ring gear 60 . The lower part of the chassis 70 is a one-way control assembly 8, which includes three (but not limited to three) one-way blocks 80 and a position selection gear 90, and the center mounting hole 91 of the position selection gear 90 is inserted into the center of the chassis 70 on the cylindrical boss 74 , and its lower end surface is fixedly connected with the transmission lower cover 12 through the fixed shaft 92 . The one-way clamping block 80 is assembled with the one-way clamping block fixing seat 72 of the base through the shaft hole.

In the transmission device 100 of the present utility model, only the input gear 20 is assembled outside the housing 11 , and all other components are inside the housing 11 . The transmission device realizes the selection of the output gear 10 and the rotation output of the output shaft 10 through the forward and reverse rotation of the input gear 20, and then realizes the adjustment of the antenna device of the multi-phase shifter by only one motor.

The input gear 20 is installed on the outer central axis of the casing 1 , that is, the outer end of the central axis of the upper cover 11 , and other components are housed inside the casing 1 . The end surfaces of the upper and lower covers 11, 12 are correspondingly formed with several pairs of supporting holes 13, which are respectively used to rotatably support the two shaft ends of the output gear shaft 10 and the auxiliary gear shaft 10' of each set of output shafts.

The several output gear shafts 10 are at least two output gear shafts, and each output shaft 10 is a cylindrical gear shaft, which includes a cylindrical gear part 102 and corresponding cylindrical mounting parts of the upper and lower ends 101 and 103 . Wherein, the cylindrical gear part 102 is provided with parallel racks uniformly axially on the outer circumference of the cylindrical shaft, and is engaged with the planetary gear 40 for gear meshing transmission. The upper and lower ends 101, 103 of the output gear shaft 10 are rotatably mounted in the support holes 13 provided on the upper and lower covers 11, 12, respectively, and the lower end extends out of the support holes 13 of the lower cover 12 to connect with the pull rod 201. The length of the cylindrical gear portion of the output gear shaft 10 is set according to specific needs. In order to realize the forward and reverse phase adjustment of the phase shifter, each shaft output gear shaft 10 is further provided with an auxiliary gear shaft 10 ′ that rotates and cooperates with each other to form a set of output shafts 1 . In the same group of output shafts 1, the shaft output gear shaft 10 and the auxiliary gear shaft 10' can be engaged and rotatably matched; in different groups of output shafts 3, the shaft output gear shaft 10 and the auxiliary gear shaft 10' cannot be meshed and rotated. The output gear shaft 10 can be directly driven by the planetary gear 40 to output forward or reverse rotation; or the planetary gear 40 drives the auxiliary gear shaft 10' of the same group, and then the auxiliary gear shaft 10' drives the output gear shaft 10 of the same group for reverse rotation. Direct or forward rotation output; thereby realizing the bidirectional rotation output of the output gear shaft 10, and the phase shifter is driven by the pull rod 201 to perform bidirectional adjustment. The auxiliary gear shaft 10 ′ is not connected to the pull rod 201 , and only the output gear shaft 10 in each group of output shafts 3 is connected to the connecting rod 201 for rotatable output.

The shaft output gear shaft 10 and the auxiliary gear shaft 10' are distributed according to the motion trajectory of the planetary gear 40, so that the planetary gear 40 can rotate and cooperate with each shaft output gear shaft 10 and auxiliary gear shaft 10' after the position selection . In this embodiment, the output gear shaft 10 and the auxiliary gear shaft 10 ′ are axially parallel and arranged in the same arc or circle.

The planetary gear 40 can be moved and located in the inner orbit of the shaft output gear shaft 10 and the auxiliary gear shaft 10'. In this embodiment, the shaft output gear shaft 10 and the auxiliary gear shaft 10' form a cylindrical shape. The cylindrical interior can revolve around the central axis and is selectively installed in the circumferential direction of the shaft output gear shaft 10 and the auxiliary gear shaft 10', and can rotate meshably with any shaft output gear shaft 10 or auxiliary gear shaft 10' Cooperate. Correspondingly, the support holes 13 on the upper cover 11 and the lower cover 12 respectively form a circular trajectory distribution on the upper cover 11 and the lower cover 12, and there is a certain arc distance between each two support holes. In this embodiment, five output gear shafts 10 are used to form five sets of output shafts 1 with five auxiliary shafts 10' respectively. The support holes 13 on the upper cover 11 or the lower cover 12 are respectively five pairs or 10 support holes 13. are located on the same arc.

In this embodiment, inside the antenna transmission device 100, the side of the planetary gear 40 facing the central axis, that is, the inner side, meshes with the gear portion of the input shaft 30 located on the central axis; The lower end of the planetary gear 40 meshes with the rack of the ring gear 60, and the upper end of the planetary gear 40 on the same side meshes with the gear of the output shaft 10 or the auxiliary shaft 10'. Through this position and matching relationship, the input shaft 30 can drive the planetary gear 40 to rotate, and the planetary gear 40 drives the ring gear 60 and the output shaft 10 or the auxiliary shaft 10' to rotate simultaneously or not to rotate. Wherein, when the inner ring gear 60 and the output shaft 10 or the auxiliary shaft 10' are not rotating, the planetary gears revolve around the inner wall of the ring gear 60 for position selection, and when the inner ring gear 60 and the output shaft 10 or the auxiliary shaft 10' rotate, the output is realized, corresponding to The planetary gear 40 rotates on its own.

The input gear 20 is also a cylindrical gear shaft, which is coaxially installed on the central shaft of the transmission device 100 through the input shaft 30 located on the central shaft. The input gear 20 is mounted on the outside of the transmission device 100 , that is, the outer end of the central axis of the upper cover 11 . The input gear 20 is gear-driven by an external motor (not shown), thereby synchronously driving the input shaft 30 to rotate. The input gear 20 is mounted on one end of the input shaft 30 , and the two are engaged in a non-relatively rotatable but synchronously rotatable manner. As an embodiment, the input gear 20 is mounted on the input shaft 30 through a keyway and/or a pin. The input shaft 30 rotates synchronously with the input gear 20 . The input shaft 30 is provided with an axially parallel rack, so it is actually a cylindrical gear shaft, including a cylindrical gear portion 31 and two ends of the shaft, ie, an upper end 32 and a lower end 33 . The gear part 31 is a gear rack arranged uniformly and parallel to the axial direction along the circumference of the cylinder. The gear part 31 of the input shaft 30 and the planetary gear 40 are rotatably engaged with each other. The upper and lower ends 32, 33 of the input shaft 30 are rotatably mounted on the central axis between the upper and lower covers 11, 12, and the upper end 32 of the input shaft 30 is rotatably sleeved in the central shaft hole 18 of the upper cover 11 and protrudes. The upper cover 11 sleeves the input gear 20 outside the upper cover 12 . The lower end 33 of the input shaft 30 rotatably passes through the center hole 54 of the planet carrier 50 , the center of the ring gear 60 , and the center hole 71 of the chassis 70 in sequence, and finally is rotatably sleeved and supported by the center hole 91 of the one-way gear 90 Inside, and the one-way gear 90 is fixed on the lower cover 12, so both ends of the input shaft 30 are rotatably supported between the upper and lower covers 11, 12, and the position selection component 4 and the one-way control component 8 are installed on the Inside of enclosure 1. In this embodiment, the input gear 20 is sleeved on the upper end of the input shaft 30 to form a coupling gear structure, and the input gear 20 drives the input shaft 30 to rotate synchronously.

It can be understood that the input gear 20 can also be other power input forms, and its function is to drive the input shaft 30 to rotate. It is also possible to directly drive the input shaft 30 to rotate from the outside of the transmission device 100 by a motor or other forms of power.

The planetary gear 40 is also a cylindrical gear shaft, and the circumference of the cylindrical body is parallel and evenly arranged with racks along the axial direction. The planetary gear 40 is rotatably engaged with the input shaft 30 , the output gear shaft 10 , the auxiliary gear shaft 10 ′, and the ring gear 60 . A spherical thimble 41 is arranged at the top of the cylindrical shaft of the planetary wheel 40 to form a telescopic shaft, and the end is hemispherical, and is movably transpositionally inserted in several one-way positioning holes 14 provided on the inner bottom surface of the upper cover 11 . The planetary wheel 40 can move along the one-way sliding surface 16 along the one-way sliding surface 16 to the next positioning hole 14 for position selection by using the ball thimble 41 at the top, corresponding to the planetary wheel 40 in this embodiment around the central axis or output The shaft 30 revolves to select a position; or the planetary wheel 40 uses the ball thimble 41 at the top to rotate in the positioning hole 14 to output. In this embodiment, corresponding to the number and position of the output gear shaft 10 and the auxiliary gear shaft 10', there are ten positioning holes 14 in total, so as to ensure that the planetary gear can choose any output gear shaft 10 or auxiliary gear shaft 10' for meshing. The circular arc surrounded by a circle of one-way positioning holes 14 formed on the upper cover 11 is located within the circular arc surrounded by the support holes 13, and each one-way positioning hole 14 corresponds to each support hole 13, so that the planetary gear 40 is located in each positioning hole 14 and only engages with one input shaft 10 or one auxiliary shaft 10' when it rotates. The center of the planetary wheel 40 is hollow, and the bottom end of the cylindrical shaft of the planetary wheel 40 is sheathed on the support shaft 52 provided on the planetary carrier 50 and can rotate freely. The planetary gear 40 is parallel to the input shaft 30 and rotatably engageable. The planetary gear 40 and the input shaft 30, the output shaft 10 and the auxiliary gear shaft 10' are parallel to each other and rotatably engageable. The input shaft 30 is transmitted through the planetary gear 40 so as to be in transmission cooperation with the output shaft 10 and the auxiliary gear shaft 10'. Therefore, the input gear 20 finally drives the output shaft 10 to rotate and output.

The planetary carrier 50 is a frame-shaped support structure, including a bottom 51 and two side arms 52 , 53 extending upward from both ends of the bottom 51 in parallel to the axial direction. The two side arms 52 , 53 form a certain angle parallel to the central axis, and are respectively used as a bearing 52 supporting the planetary wheel 40 and as a position selection mark 53 for relatively marking the position of the planetary wheel 40 . The position selection mark 53 is used for relatively marking the position of the planetary gear 40 , thereby marking the selected output shaft 10 . A central hole 54 is disposed at the center of the bottom 51 and extends downward to form a bearing. The lower end of the input shaft 30 passes through the center hole 54 of the bottom 51 of the planet carrier 50 in turn, and passes through the center of the ring gear 60, the center axis hole 71 of the chassis 70, and finally is supported on the center axis hole 91 of the one-way gear 90. Therefore, The bearing formed by the planetary carrier 50 through the central hole 54 is sleeved in the central hole 71 of the chassis 70, and finally the input shaft 30 is supported in the bearing formed by the central hole 54 and the central hole 71 of the chassis 70, so that the planetary carrier 50 can rotate freely. It is installed inside the ring gear 60, but the planet carrier 50 cannot move axially.

The bottom end or the lower end of the input shaft 30 can freely rotate through the center shaft hole and freely rotate with each other.

Each output shaft 10 and its adjacent auxiliary shaft 10 ′ are in transmission cooperation with each other to form a set of output shafts 1 , so that the output shaft 10 can rotate forward and backward in both directions. The lower end 103 of the output shaft 10 can freely rotate through the support hole 103 on the lower cover 12 and is connected with the pull rod 201 after extending outward; Connect with pull rod 201. Of course, it is not limited to this connection structure. The output shafts 10 of the same group and their adjacent auxiliary shafts 10' can be engaged in transmission cooperation; while there is no transmission cooperation between the output shafts 10 and auxiliary shafts 10' of different groups, and they are relatively independent. Correspondingly, the support holes 13 corresponding to the output shafts 10 of the same group and their adjacent auxiliary shafts 10' are relatively close to each other, and the intervals between different groups are relatively far, so that the combinations of different groups of output shafts do not interfere with each other and are independent. Rotate output. The support holes 13 on the upper cover 11 or the lower cover 12 are arranged on the same circumference. There are 5 sets of support holes 13 in this embodiment, and each set corresponds to one end of the same set of output shafts 10 and auxiliary shafts 10', the output shaft 10 and the auxiliary shaft 10'. The other end of the shaft 10 ′ is rotatably supported in the supporting hole 13 on the upper cover 11 .

The ring gear 60 is in the shape of a ring, and its ring inner wall is axially parallel and evenly provided with internal racks, which mesh with the lower end of the planetary gear 40 and are rotatably matched. The gears of the output shaft sets 10 , 10 ′ are circumferentially distributed on the upper part of the ring gear 60 and meshed with the upper end of the planetary gear 40 . The ring gear 60 is located inside the circular track of the output shaft group 10, 10', and its upper end surface is close to the lower end surface of the gear part 102 of the output shaft group 10, 10' (as shown in Figure 6), so that the output shaft 10 and the auxiliary shaft 10' The lower end of the ring gear 60 is located outside the annular side wall and extends toward the lower cover 12 .

The lower end surface of the ring gear 60 abuts against the chassis 70, the chassis 70 is circular, adapted to the annular ring gear 60, and covers the lower end surface of the annular ring gear 60, and the two are fixedly connected by the ring gear fixed shaft 75 to form an integral structure . Referring to FIG. 10( a ) and ( b ), the chassis 70 is provided with a vertical ring gear fixing shaft 75 facing the upper end surface of the ring gear 60 , which is clamped to the inner wall of the ring gear 60 and fixed to each other. Of course, the ring gear 60 and the chassis 70 can also be fixed in one body by other means or directly form an inseparable integral structure, and the chassis 70 serves as the bottom of the ring gear 60 (or called the ring gear 60 ). The lower end of the chassis 70 faces the lower cover 12, on which a one-way block fixing seat 72 and a stopper 73 are arranged, and the end face of the central hole 71 facing the lower cover 12 forms a cylindrical boss 74, and the cylindrical boss 74 is freely rotatably sleeved in the center hole 91 of the one-way gear 90; the lower end of the input shaft 30 is inserted into the center of the ring gear 60, the center hole 71 and the cylindrical boss 74 of the chassis 70, and finally supported on the one-way gear 90 The one-way gear 90 is fixed to the lower cover 12 in the central hole 91 of the upper cover 12 , so that the ring gear 60 and the chassis 70 are rotatably installed in the casing 11 and between the upper and lower covers 11 , 12 .

The position selection gear, that is, the one-way gear 90 is fixed on the lower cover 12 . The one-way gear 90 is disc-shaped, with a number of helical teeth 93 arranged in the same direction on the circumference as clockwise (or counterclockwise), and several (in this embodiment, three centrally symmetrically arranged) one-way blocks 80 It is rotatably installed on the lower end surface of the chassis 70 and fits tightly with the one-way gear 90 so that it can rotate in one direction and rotate in the other direction. The one-way clamping block 80 and the one-way gear 90 form a one-way control assembly 8, which can realize relative rotation in one direction (such as clockwise or counterclockwise), and locking in the opposite direction of rotation. Among them, the surface of the one-way gear 90 facing the lower cover 12 is the lower end surface, and several axially parallel one-way gear fixing shafts 92 are arranged on the lower end surface. In order to ensure the stability of the antenna transmission device 100, the center of the lower end surface is symmetrical. Three one-way gear fixed shafts 92 are arranged groundly. Correspondingly, the center of the lower cover 12 is symmetrically provided with a one-way gear fixing hole 15, and the free ends of the one-way gear fixing shaft 92 are respectively sleeved in the one-way gear fixing hole 15 so that the bottom of the one-way gear 90 The end face is fixedly connected with the transmission lower cover 12 through the fixed shaft 92 . The central hole 91 of the one-way gear 90 is inserted into the central cylindrical boss 74 of the chassis 70 , so that the position selection gear 90 is installed on the lower surface of the chassis 70 . The chassis 70 can rotate relative to the position selection gear 90; the lower end surface of the one-way clamping block 80 installed on the chassis 70 abuts against the gap between the helical teeth 93 of the position selection gear 90, and the one-way clamping block 80 can rotate together with the chassis 70, therefore, Due to the function of the one-way control assembly 8, the chassis 70 can only rotate in one direction, and correspondingly, the ring gear 60 can only rotate in one direction.

The lower end surface of the chassis 70 is provided with three (but not limited to three) one-way block fixing seats 72 symmetrical to the center, and the one-way block 80 is assembled with the one-way block fixing seats 72 of the base 70 through the shaft hole. . The one-way block 80 is a ratchet mechanism, which limits the movement of the inner ring gear 60 to one-way rotation, such as clockwise, and cannot rotate counterclockwise. The free end of the one-way block 80 abuts against the gap between the helical teeth of the position selection gear 90, and rotates along the slanting direction of the helical teeth 93 to rotate away from the clamping effect, which is opposite to the slanting direction of the helical teeth 93. Locked tightly and cannot be turned. The limiting block 73 abuts against the outer side of the end of the one-way clamping block 80 to limit the swing range of the free end of the one-way clamping block 80 around the fixed seat 72, so as to facilitate structural stability and prevent damage to the lower ends of the output shafts 10, 10'. interference.

In the embodiment of the present invention, the center hole 54 of the planet carrier 50 is pin-connected with the input shaft 30 and the chassis 70, and the planet carrier 50 and the chassis 70 can rotate freely and cannot move axially.

The center of the upper cover 11 (refer to Figure 3 and Figure 8) is provided with a central hole 18 for supporting the upper end of the input shaft 30, and a circle of one-way positioning holes 14 is arranged around the central hole 18, and the one-way positioning hole 14 is provided at the bottom of the upper cover 11 medial side. Specifically, an annular protruding part 112 is formed on the periphery of the central axis hole 18 of the upper cover 11 toward the outside of the housing 1, and several one-way positioning holes 14 are provided on the inner wall of the bottom of the annular protruding part 112, which form a one-way positioning hole facing the same circumferential direction. The sliding surface 16 and the ball thimble on the top of the planetary gear 40 cooperate with each one-way positioning hole 14, so that the planetary gear 40 can move along the one-way sliding surface 16 to the next positioning hole 14 for position selection. The one-way sliding surface 16 can also limit the planetary gear 40 to rotate in the positioning hole 14 without revolving. The annular protruding part 112 is used as the moving channel 112 at the top of the marking mark 53, and a section of it forms a raised rectangular part in which a sensor (not shown) is installed to sense the passing of the position selection mark 53, and serves as the zero position monitoring part 113 of the position selection mark .

The position selection mark 53 rotates in the raised part 112 of the upper cover, the positions of the position selection mark 53 and the planetary gear 40 are not necessarily symmetrical but at a certain angle, and a sensor is installed inside the raised rectangular part 113 of the upper cover 11 (not shown As shown), the position selection mark 53 can be defined as the zero position when it rotates through the raised rectangular part 112, and then the positioning of the output shaft 10 is realized by controlling the number of rotations of the motor through the program. The positioning of the output shaft 10 refers to that the planetary gear 40 slides to the output shaft 10 for meshing transmission, so as to drive the output shaft 10 to rotate and output.

The input shaft 30 can also be directly driven by the motor, but the interface needs to be designed. Therefore, it is more convenient for the motor shaft to mesh with the input shaft through gears.

The inner ring gear 60 is fixed with the chassis 70 , the one-way gear 90 is fixed with the lower cover 12 , and the inner ring gear chassis assembly is meshed with the one-way gear 90 through the one-way block 80 to realize the one-way rotation of the inner ring gear 60 .

Position selection process: when the input shaft 30 rotates counterclockwise, it drives the planetary gear 40 to rotate clockwise, which tends to drive the inner ring gear 60 to rotate clockwise, but the inner ring gear 60 can only rotate counterclockwise and cannot rotate clockwise, so only The planet carrier 50 can be rotated. The counterclockwise rotation of the input shaft 30 can realize the position selection process.

Output process: after the planetary wheel 40 arrives at the specified output shaft 10, the input shaft 30 rotates clockwise, and the planetary wheel 40 rotates counterclockwise. Since the telescopic shaft formed by the spherical thimble 41 of the planetary wheel 40 can prevent the The planetary carrier 50 rotates clockwise, and the planetary gear 40 is equivalent to the fixed axis gear at this moment, and realizes the output.

The embodiment of the utility model adds an inner ring gear 60, which is limited by a ratchet mechanism 80 (one-way gear), and can only rotate in one direction (taking clockwise as an example), and cannot rotate counterclockwise. The upper end of the gear of the planetary gear 40 of the utility model is always meshed with one of the output shaft 10 and the auxiliary shaft 10 ′, and the lower end of the gear of the planetary wheel 40 is always meshed with the inner rack of the ring gear 60 . When selecting the position, the input gear 20 rotates clockwise to drive the planetary gear 40 to rotate counterclockwise. Since the inner ring gear 60 cannot rotate counterclockwise but can only rotate clockwise, the inner ring gear 60 is stationary, and the output shaft 10' and the auxiliary shaft 10' are correspondingly Does not rotate, but the planetary gear 40 rotates with the planetary carrier 50 and revolves around the annular inner wall of the ring gear 60 and the circle enclosed by the output shaft group, to the predetermined output shaft group 1 and the corresponding output gear 10 or auxiliary The gear 10' meshes so that the position selection action can be realized. When outputting, when the planetary gear 40 realizes position selection and stops at a certain gear 10 or 10′ position, the input gear 20 rotates counterclockwise, the planetary gear 40 rotates clockwise, and drives the inner ring gear 60 to freely rotate clockwise, and the upper cover The one-way chute 16 designed on 11 can prevent the planetary wheel 40 from rotating counterclockwise to another positioning hole 14, so as to achieve a specific position rotation output. The orientation of the one-way chute 16 is the same as the revolution direction of the planetary gear 40 .

The embodiment of the utility model uses the one-way control assembly 8 to control the inner ring gear 60 to only rotate clockwise and not counterclockwise to illustrate the working principles. It can be understood that the one-way control assembly 8 can also be designed to control the inner ring gear 60 to be reversible. The hour hand cannot rotate clockwise, and its working principle can be deduced by analogy.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (10)

1. An antenna transmission device, comprising a shell made of an upper cover and a lower cover, an input shaft and at least two sets of output shafts rotatably installed between the upper cover and the lower cover; it is characterized in that the antenna transmission The device further includes a planetary gear selection assembly and a one-way control assembly; each set of output shafts includes an output shaft and an auxiliary shaft that is driven and matched with it; the planetary gear selection assembly includes a planetary gear; the one-way control The component can control the planetary gear: when it is driven by the input shaft to rotate in the first rotation direction, it moves along the trajectory surrounded by each set of output shafts to a predetermined position that can be driven and matched with any set of output shafts, so as to select a position, Or when driven by the input shaft to rotate in the second rotation direction of the opposite rotation direction, it will rotate at the aforementioned predetermined position and drive the corresponding output shaft to rotate and output; The output shaft or the auxiliary shaft in the shaft is driven and matched to obtain the two-way rotation output of the output shaft respectively; the one input shaft can be driven by external power to rotate in two directions, and correspondingly drive the planetary wheels in the first rotation direction Rotation or rotation in the second direction of rotation. 2 . The antenna transmission device according to claim 1 , wherein the transmission cooperation between the planetary gear, the input shaft and each set of output shafts is gear meshing transmission cooperation. 3 . 3. The antenna transmission device according to claim 2, wherein the planetary gear, the input shaft and each group of output shafts are cylindrical gear shafts respectively, and the upper and lower ends of the gear shaft are connected with the upper cover and the upper and lower ends of the gear shaft. The lower cover corresponds; the upper and lower ends of the output shaft and the auxiliary shaft in each set of output shafts are respectively rotatably sleeved in the support holes provided on the upper cover and the lower cover; the output shafts in each set of output shafts The lower end protrudes out of the support hole of the lower cover for rotation output; the upper and lower ends of the input shaft are respectively rotatably sleeved in the center holes provided on the upper cover and the lower cover; the input shaft and The output shafts are parallel to each other. 4. The antenna transmission device according to claim 2, wherein the planetary gear selection assembly further comprises a ring gear, the side wall of the ring gear is provided with an axially parallel rack; the planetary gear and The ring gear meshes; the one-way control component controls the ring gear to rotate in one direction; when the planetary gear rotates in the first rotation direction, the ring gear and the output shaft are non-rotatably matched with the planetary gear; When the planetary wheel rotates in the opposite direction, the ring gear and the output shaft are rotatably matched with the planetary wheel. 5. The antenna transmission device as claimed in claim 4, wherein the ring gear is an inner ring gear, and the rack is arranged on the annular inner side wall of the inner ring gear; Internally, the lower end of the star gear is engaged with the ring gear; the output shafts of each group are arranged on the periphery of the ring gear, and the upper ends of the star gear can be respectively engaged with the output shafts of each group; the input shaft is located at The center of the ring gear meshes with the planetary gears. 6. The antenna transmission device according to claim 4, wherein a chassis is fixed on the lower end surface of the ring gear, and the chassis covers the lower end surface of the ring gear; a center hole is arranged in the center of the chassis, The lower end of the input shaft passes through the central hole. 7. The antenna transmission device according to claim 6, wherein the one-way control assembly comprises several one-way blocks and a one-way gear; the one-way block is clamped between the tooth gaps of the gears And it can be unidirectionally rotated relative to the opposite direction and clamped with the one-way gear; the one-way block is installed on the lower end surface of the ring gear chassis and rotates synchronously with the ring gear chassis; the one-way The gear is fixed on the lower cover; the center of the one-way gear is provided with a central hole; the center of the chassis forms a cylindrical boss that can be relatively rotatably sleeved in the central hole of the one-way gear; the output shaft The lower end can pass through the center hole of the chassis, the cylindrical boss and the center hole of the one-way gear in a relatively rotatable manner. 8. The antenna transmission device according to claim 6, wherein the planetary wheel position selection assembly further comprises a planetary carrier supporting the planetary wheel; the center of the planetary carrier is provided with a central hole bearing sleeve; the planetary carrier The center hole bearing sleeve is rotatably sleeved in the center hole of the chassis; the lower end of the input shaft can be relatively rotatably passed through the center hole bearing sleeve of the planet carrier and the center hole of the chassis; the planet carrier is A frame-shaped support structure, including a bottom and two side arms extending upward from both ends of the bottom in parallel to the axial direction; the two side arms form a certain angle and are parallel to the input shaft; the two side arms are respectively opposite Bearings that rotatably support the planetary wheels and are used as position selection marks for relatively marking the positions of the planetary wheels; Ball thimble; the upper cover is provided with a number of one-way positioning holes; each of the one-way positioning holes includes a one-way sliding surface facing the same; when the planetary wheel rotates in the first rotation direction, it can be Move to the predetermined positioning hole along the track along the arrangement of the one-way positioning holes in the direction of the one-way sliding surface; It is defined in the positioning hole to rotate in the second rotation direction and engage with the corresponding output shaft or auxiliary shaft. 9. The antenna transmission device according to claim 8, characterized in that, the upper cover is provided with an annular protruding part as a moving passage for the position selection mark; The zero position monitoring part is provided with a sensor for sensing the passing of the position selection mark and recording it as the zero position, and the position selection of the output shaft is realized by controlling the number of rotations of the planetary carrier through the program. 10. A mobile antenna, comprising several phase shifters and the antenna transmission device according to any one of claims 1-9, each phase shifter is connected to the lower end of the output shaft of the antenna transmission device through a connecting mechanism , the rotation output of the output shaft adjusts the phase shifter correspondingly.