CN219106513U - Linear circular polarization conversion device - Google Patents
Linear circular polarization conversion device Download PDFInfo
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- CN219106513U CN219106513U CN202320138244.0U CN202320138244U CN219106513U CN 219106513 U CN219106513 U CN 219106513U CN 202320138244 U CN202320138244 U CN 202320138244U CN 219106513 U CN219106513 U CN 219106513U
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Abstract
The utility model discloses a linear circular polarization conversion device, and belongs to the technical field of satellite communication and navigation. The device comprises a circular polarizer, a driving motor, a bracket mounting disc and a driven gear; the driven gear is fixed on the outer wall of the circular polarizer and is fixedly connected with the same shaft center; the driving motor is fixed on one side of the driven gear through the motor support; the output shaft of the driving motor is provided with a driving gear, and the driving gear is meshed with the driven gear; the circular polarizer is connected to the top of the bracket mounting plate through a rotary joint; the bottom of the motor support is fixed on the bracket mounting plate; when the driven gear rotates to the limit, the micro switch is contacted with the limit contact block at the corresponding side. The utility model solves the defects of inaccurate positioning of the polarization position or complex structure of the feed source polarization conversion device, and conveniently realizes the linear circular polarization conversion of the antenna feed system by adopting a relatively simple structure.
Description
Technical Field
The utility model relates to the technical field of satellite communication and navigation, in particular to a linear circular polarization device.
Background
In the fields of satellite communication, the communication system using circular polarization signal transmission and the communication system using linear polarization signal transmission exist in the same frequency band, and particularly in the C frequency band, the communication system using circular polarization state and linear polarization state is commonly used, and the linear polarization conversion device and the circular polarization conversion device are needed for the communication of antennas, different satellites and signals with different polarizations.
The existing linear polarization and circular polarization conversion device has various defects:
the polarization position is difficult to locate. The linear polarization switching of the system is generally realized by axially rotating 45 a circular polarizer or an orthogonal mode coupler in the feed system, when the port cross polarization is minimum, the position of the circular polarizer, namely the linear polarization and the circular polarization position of the feed system, is greatly changed when the circular polarizer rotates to the position close to the accurate position of the linear polarization or the circular polarization, and is a very sharp descending peak, so that the linear and circular polarization conversion position is required to be positioned very accurately, the positioning mode of the traditional device is single, and the accurate positioning is not easy to realize.
The polarizing device has a complex structure. The linear-circular conversion of the feed source system is only needed when the working polarization of the system is different after the working state is converted, so that the working time of a general polarization conversion device is relatively short, the working is not needed even for a few days or a few months, the moment needed by rotating a circular polarizer or an orthogonal mode coupler is relatively small, the conventional system adopts a normal gear box to arrange a driving gear and a driving motor, and the accurate positioning mechanism is relatively complex.
Disclosure of Invention
In view of this, the present utility model provides a linear circular polarization conversion device. The utility model solves the defects of inaccurate positioning of the polarization position or complex structure of the feed source polarization conversion device, and conveniently realizes the linear circular polarization conversion of the antenna feed system by adopting a relatively simple structure.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
a linear circular polarization conversion device comprises a circular polarizer and a driving motor; the device also comprises a bracket mounting disc and a driven gear; the driven gear is fixed on the outer wall of the circular polarizer and is fixedly connected with the outer wall of the circular polarizer in a coaxial manner; the driving motor is fixed on one side of the driven gear through a motor support; the output shaft of the driving motor is provided with a driving gear, and the driving gear is meshed with the driven gear;
the circular polarizer is connected to the top of the bracket mounting plate through a rotary joint; the bottom of the motor support is fixed on the bracket mounting plate; a limit support is further arranged on the support mounting plate; the top of the limit support is provided with a limit contact block; the two limiting contact blocks are arranged and distributed on the outer side of the driven gear; a micro switch is fixed on the upper surface of the driven gear; when the driven gear rotates to the limit, the micro switch is contacted with the limit contact block at the corresponding side.
Further, the driving motor is a direct current motor.
Further, the driven gear is a part of the post gear and is of an arc-shaped structure.
Further, two limit supports are arranged, and the limit supports and the limit contact blocks are in one-to-one correspondence.
Further, the bracket mounting plate is provided with an arc-shaped hole for mounting the limiting support; the circle center of the arc-shaped hole is positioned on the central axis of the circular polarizer; the limiting support is fixed in the corresponding arc hole through a bolt, and the limiting support can move along the arc hole and change the installation position.
Furthermore, the contact surface of the limit contact block and the contact surface of the micro switch are arc-shaped round sliding surfaces.
Further, the limiting contact block is a roller; the roller surface of the roller has smooth protrusions parallel to the central axis thereof to form a cam structure.
Furthermore, the limit support is of a Z-shaped structure.
Further, the cross section of the limiting contact block is rectangular, and both ends of the rectangle are provided with smooth arc transition; the limiting contact block is connected with the limiting support through a through hole bearing positioned on the limiting contact block, the central axis of the through hole is parallel to the central axis of the limiting contact block, and a distance larger than 0 is reserved between the central axis of the through hole and the central axis of the limiting contact block.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model can adjust the limit position in a larger range and accurately, mainly has two-stage position adjustment, the position of the polarizer needing to stop limit is required to stop accurately, the trigger position of the limit switch has errors, if the polarizer is only fixed in a sliding way, the polarizer is not easy to fix to a required position, the position can be changed in the fastening process, or a high-precision machining slideway and related parts are required, or the polarizer can be fastened for many times, and the test result is finished just when the polarizer is fixed to the right position at once, and the polarizer is not required to be fastened. The device for common processing firstly determines the position of the sliding limit switch, and then is additionally provided with a limit fine adjustment, which is very convenient and is the greatest advantage of the device.
Drawings
FIG. 1 is a top view of a structure of an embodiment of the present utility model;
FIG. 2 is a side view of the structure of FIG. 1;
FIG. 3 is a top view of another form of structure of the present utility model;
FIG. 4 is a side view of the structure of FIG. 3;
FIG. 5 is a cross-sectional view of the motor and motor housing of FIG. 1;
FIG. 6 is a cross-sectional view of another form of motor and motor housing of the present utility model;
FIG. 7 is a schematic diagram of an implementation of a microswitch in an embodiment of the utility model;
FIG. 8 is a schematic structural diagram of an implementation of a limiting support in an embodiment of the present utility model;
FIG. 9 is a schematic view of the structure of a driven gear in an embodiment of the present utility model;
FIG. 10 is a schematic diagram of the placement of the limiting support and the motor support on the network mounting plate according to an embodiment of the present utility model;
FIG. 11 is an isometric view of FIG. 3;
fig. 12 is a schematic structural diagram of an implementation manner of a limit contact according to an embodiment of the present utility model.
Fig. 13 is a schematic structural diagram of another implementation of the limit contact according to an embodiment of the present utility model.
In the figure: the direct current motor 6, the micro-gap switch 4, the spacing contact block 8, the spacing support 3, the motor support 5, the driving gear 10, the driven gear 7, the rotary joint 1, the circular polarizer 2 and the bracket mounting plate 9.
Detailed Description
The technical scheme of the utility model is further described below with reference to the accompanying drawings and the specific embodiments.
A linear circular polarization conversion device comprises a circular polarizer and a driving motor; the device also comprises a bracket mounting disc and a driven gear; the driven gear is fixed on the outer wall of the circular polarizer and is fixedly connected with the outer wall of the circular polarizer in a coaxial manner; the driving motor is fixed on one side of the driven gear through a motor support; the output shaft of the driving motor is provided with a driving gear, and the driving gear is meshed with the driven gear;
the circular polarizer is connected to the top of the bracket mounting plate through a rotary joint; the bottom of the motor support is fixed on the bracket mounting plate; a limit support is further arranged on the support mounting plate; the top of the limit support is provided with a limit contact block; the two limiting contact blocks are arranged and distributed on the outer side of the driven gear; a micro switch is fixed on the upper surface of the driven gear; when the driven gear rotates to the limit, the micro switch is contacted with the limit contact block at the corresponding side.
Further, the driving motor is a direct current motor.
Further, the driven gear is a part of the post gear and is of an arc-shaped structure.
Further, two limit supports are arranged, and the limit supports and the limit contact blocks are in one-to-one correspondence.
Further, the bracket mounting plate is provided with an arc-shaped hole for mounting the limiting support; the circle center of the arc-shaped hole is positioned on the central axis of the circular polarizer; the limiting support is fixed in the corresponding arc hole through a bolt, and the limiting support can move along the arc hole and change the installation position.
Furthermore, the contact surface of the limit contact block and the contact surface of the micro switch are arc-shaped round sliding surfaces.
Further, the limiting contact block is a roller; the roller surface of the roller has smooth protrusions parallel to the central axis thereof to form a cam structure.
Furthermore, the limit support is of a Z-shaped structure.
Further, the cross section of the limiting contact block is rectangular, and both ends of the rectangle are provided with smooth arc transition; the limiting contact block is connected with the limiting support through a through hole bearing positioned on the limiting contact block, the central axis of the through hole is parallel to the central axis of the limiting contact block, and a distance larger than 0 is reserved between the central axis of the through hole and the central axis of the limiting contact block.
Further details are provided below by way of more specific examples.
The first embodiment is as follows: as shown in fig. 1, 2, 5, 7, 8, 9, 10, 12, one embodiment is shown: in the embodiment, the direct current motor 6 drives the circular polarizer 2 to rotate to realize the switching of the linear polarization state and the circular polarization state of the feed source, and the limit contact block 8 which rotates synchronously with the circular polarizer touches the micro switch 4 to position the linear polarization state and the circular polarization state, so that the linear polarization state and the circular polarization state can be adjusted in a large range in a fine tuning way.
As shown in fig. 7 and 12, the surface of the limit contact block 8 contacting with the micro switch 4 is a smooth surface, the center of the contact surface is the most protruding part, and the fixing position of the limit contact block 8 can be adjusted.
Referring to fig. 10, the limit switch 4 is mounted on the limit support 3, and the limit support 3 can slide along a certain track to change the limit position.
In this embodiment, the dc motor 6 is fixed on the motor support 5, the driving gear 10 is installed on the motor shaft, the driving gear 10 installed on the motor shaft is meshed with the driven gear 7 at the positioning position of the motor support 5, and the motor support 5 can move from the positioning position after the fastener is loosely installed, so that the driving gear 10 is disengaged from the driven gear 7, and debugging and testing are convenient.
In this embodiment, the driven gear 7 is concentric with the circular polarizer and is fixed together, the driven gear 7 is a part of the post gear, and when the dc motor 6 is still rotating after the system fault micro switch fails, the driving gear 10 rotating to the missing tooth surface part and the driven gear 7 mesh with the failed circular polarizer to stop rotating.
Referring to fig. 12, in this embodiment, the limit contact block 8 is in a strip shape, a strip hole is formed in the middle for self-fixing and position adjustment, the contact end surface of the limit contact block 8 and the micro switch 4 is smooth and symmetrical along the center, and the top of the end surface is flat and smooth. The limit contact block is a cylinder, and the installation fixing hole of the limit contact block is positioned on the central line of the cylinder inside the cylinder and has a certain distance with the center of the cylinder.
In the structure of the limit contact block in fig. 12, the limit contact block 8 and the microswitch 4 are positioned close to the most protruding part of the end face, and when the system fault microswitch failure motor 6 still rotates, the limit contact block 8 can pass through the microswitch 4, and the microswitch 4 cannot be damaged.
Referring to fig. 3, 4, 11 and 6, a second embodiment of the overall structure is shown.
Referring to fig. 13, the limit contact block 8 does not touch the motor support 5 when the follower gear 7 rotates, and the limit contact block 8 can reversely touch and pass through the micro switch 4. The limit contact block is of a cam structure. Similarly, the position of the limit contact block 8 and the position of the micro switch 4 are close to the most protruding part of the end face, and when the system fault micro switch failure motor 6 still rotates, the limit contact block 8 can pass through the micro switch 4, and the micro switch 4 cannot be damaged.
Claims (9)
1. A linear circular polarization conversion device comprises a circular polarizer and a driving motor; the device is characterized by further comprising a bracket mounting disc and a driven gear; the driven gear is fixed on the outer wall of the circular polarizer and is fixedly connected with the outer wall of the circular polarizer in a coaxial manner; the driving motor is fixed on one side of the driven gear through a motor support; the output shaft of the driving motor is provided with a driving gear, and the driving gear is meshed with the driven gear;
the circular polarizer is connected to the top of the bracket mounting plate through a rotary joint; the bottom of the motor support is fixed on the bracket mounting plate; a limit support is further arranged on the support mounting plate; the top of the limit support is provided with a limit contact block; the two limiting contact blocks are arranged and distributed on the outer side of the driven gear; a micro switch is fixed on the upper surface of the driven gear; when the driven gear rotates to the limit, the micro switch is contacted with the limit contact block at the corresponding side.
2. The linear-to-circular polarization conversion device according to claim 1, wherein the driving motor is a direct current motor.
3. The linear-to-circular polarization conversion device according to claim 1, wherein the driven gear is a part of the post gear, and has an arc-shaped structure.
4. The linear circular polarization conversion device according to claim 1, wherein two limiting supports are arranged, and the limiting supports and the limiting contact blocks are in one-to-one correspondence.
5. The linear-to-circular polarization conversion device according to claim 4, wherein the bracket mounting plate is provided with an arc-shaped hole for mounting the limiting support; the circle center of the arc-shaped hole is positioned on the central axis of the circular polarizer; the limiting support is fixed in the corresponding arc hole through a bolt, and the limiting support can move along the arc hole and change the installation position.
6. The linear-to-circular polarization conversion device of claim 4, wherein the contact surface of the limit contact block and the contact surface of the micro switch are arc-shaped circular sliding surfaces.
7. The linear-to-circular polarization conversion device of claim 1, wherein the limit contact is a roller; the roller surface of the roller has smooth protrusions parallel to the central axis thereof to form a cam structure.
8. The linear-to-circular polarization conversion device of claim 1, wherein the limiting support is of a Z-type structure.
9. The linear circular polarization conversion device according to claim 1, wherein the cross section of the limit contact block is rectangular, and both ends of the rectangle are provided with smooth arc transition; the limiting contact block is connected with the limiting support through a through hole bearing positioned on the limiting contact block, the central axis of the through hole is parallel to the central axis of the limiting contact block, and a distance larger than 0 is reserved between the central axis of the through hole and the central axis of the limiting contact block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320138244.0U CN219106513U (en) | 2023-02-07 | 2023-02-07 | Linear circular polarization conversion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320138244.0U CN219106513U (en) | 2023-02-07 | 2023-02-07 | Linear circular polarization conversion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219106513U true CN219106513U (en) | 2023-05-30 |
Family
ID=86466460
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320138244.0U Active CN219106513U (en) | 2023-02-07 | 2023-02-07 | Linear circular polarization conversion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219106513U (en) |
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2023
- 2023-02-07 CN CN202320138244.0U patent/CN219106513U/en active Active
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