CN211376894U - High-power broadband rotary joint - Google Patents
High-power broadband rotary joint Download PDFInfo
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- CN211376894U CN211376894U CN201922437052.6U CN201922437052U CN211376894U CN 211376894 U CN211376894 U CN 211376894U CN 201922437052 U CN201922437052 U CN 201922437052U CN 211376894 U CN211376894 U CN 211376894U
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Abstract
The utility model provides a high-power broadband rotary joint, which comprises a fixed part and a rotary part which are mutually connected in a rotating way, and is characterized in that the fixed part is provided with a fixed circular waveguide, the left end of the fixed circular waveguide is connected with a fixed converter, and the inner cavity is provided with a fixed filtering ring; the rotating part is provided with a rotating circular waveguide, the right end of the rotating circular waveguide is connected with a rotating converter, and the inner cavity of the rotating circular waveguide is provided with a rotating filter ring; the outer wall of the left end of the rotary circular waveguide is rotationally connected with the inner wall of the right end of the fixed circular waveguide through a bearing, the left side surface of the bearing is locked through a retaining ring for a shaft, which is sleeved on the rotary circular waveguide, the right side surface of the bearing is fixed through a cover plate, and the cover plate is connected with the right end surface of the fixed circular waveguide through a screw. The utility model discloses a converter and the filtering ring that fixed part and rotating part set up respectively have guaranteed the transform and the filtration of mode, have realized that high-power signal is low-loss, high efficiency transmits, have compact structure, processing convenience, with low costs, install characteristics such as quick, the debugging of being convenient for.
Description
Technical Field
The utility model relates to a communication technology field's waveguide rotary joint technique, concretely relates to high-power broadband rotary joint.
Background
In the application of modern radar systems and communication systems, in order to search, track and measure the space position of a target, the speed of the target and the property of the target, an antenna of a mechanical scanning radar system must rotate 360 degrees at any time. The rotary joint is an important device for completing the task of microwave signal transmission when the antenna rotates in order to meet the requirements of continuously searching a target, tracking the target and measuring the target during the operation of the antenna. The rotary joint can ensure that when the antenna rotates, the energy on the feeder line can be normally fed to the antenna, or the energy received by the antenna can be normally fed to the receiver.
With the development of communication technology, radar systems need to search, track and measure targets at longer distances, that is, the radar has a longer range, so that the transmitting power of the radar communication systems is higher and higher, and low-loss transmission is required. However, the conventional rotary joint has low transmission efficiency and large insertion loss, and cannot meet the index requirements of a high-transmission-power system, and in view of the literature documents disclosed at present, no detailed literature on the high-transmission-power rotary joint is introduced at home and abroad. Therefore, the development of a high-power broadband rotary joint has wide application value.
SUMMERY OF THE UTILITY MODEL
The not enough to prior art, the utility model aims at providing a high-power broadband rotary joint to solve among the prior art rotary joint signal transmission efficiency low, the big problem of insertion loss.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a high-power broadband rotary joint, which comprises a fixed part and a rotary part which are mutually connected in a rotating way, and is characterized in that the fixed part is provided with a fixed circular waveguide, the left end of the fixed circular waveguide is connected with a fixed converter, and the inner cavity is provided with a fixed filtering ring; the rotating part is provided with a rotating circular waveguide, the right end of the rotating circular waveguide is connected with a rotating converter, and an inner cavity of the rotating circular waveguide is provided with a rotating filter ring; the outer wall of the left end of the rotary circular waveguide is rotatably connected with the inner wall of the right end of the fixed circular waveguide through a bearing, the left side face of the bearing is locked through a shaft check ring sleeved on the rotary circular waveguide, the right side face of the bearing is fixed through a cover plate, and the cover plate is connected with the right end face of the fixed circular waveguide through a screw.
Furthermore, the fixed circular waveguide inner cavity and the rotary circular waveguide inner cavity are respectively provided with a step, and the fixed filtering ring and the rotary filtering ring are respectively bonded on the corresponding steps.
Further, a fixed rectangular waveguide is welded in the radial direction of the fixed circular waveguide and is communicated with the inner cavity of the fixed circular waveguide; the rotary circular waveguide is radially welded with a rotary rectangular waveguide, and the rotary rectangular waveguide is communicated with the inner cavity of the rotary circular waveguide.
Furthermore, a C-shaped choke groove is reserved between the right end of the fixed circular waveguide inner cavity and the left end of the rotary circular waveguide inner cavity.
Furthermore, two bearings are arranged in parallel, and an adjusting ring is arranged between the two bearings.
Further, the adjustable ring divide into interior adjustable ring and outer adjustable ring, interior adjustable ring both ends respectively with two the inner circle of bearing is contradicted and is connected, outer adjustable ring both ends respectively with two the outer lane of bearing is contradicted and is connected.
Further, the two bearings are both deep groove ball bearings.
Compared with the prior art, the utility model provides a high-power broadband rotary joint has following beneficial effect:
1. the converter and the filter ring are respectively arranged on the fixed part and the rotating part, so that the conversion and the filtration of modes are ensured, the low-loss and high-efficiency transmission of high-power signals is realized, the insertion loss is ensured to be below 1.25dB, and the index requirement of a high-transmitting-power system can be met;
2. through the choke groove, a mutual nested structure is formed between the fixed circular waveguide and the rotary circular waveguide, so that good transmission performance between the rotary circular waveguide and the fixed circular waveguide is ensured, and stable rotation of a connecting part is realized;
3. the whole rotary joint has the characteristics of compact structure, easiness in processing, low cost, quickness in installation, convenience in debugging and the like, and can realize low-loss and high-efficiency transmission of high-power signals.
Drawings
FIG. 1 is a schematic view of the main section structure of the present invention;
fig. 2 is an enlarged schematic view of a portion a in fig. 1.
The reference numerals are explained below:
1: fixing the circular waveguide 2: the fixed converter 3: fixed filtering ring
4: rotating the circular waveguide 5: the rotary converter 6: rotary filtering ring
7: bearing 8: shaft retainer ring 9: cover plate
10: and (3) screws 11: fixed rectangular waveguide 12: rotating rectangular waveguide
13: choke groove 14: inner adjusting ring 15: external adjusting ring
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" in the following description are used only to indicate the correspondence between the upper, lower, left and right directions of the drawings themselves, and do not limit the structure.
As shown in fig. 1-2, the utility model provides a high-power broadband rotary joint, which comprises a fixed part and a rotary part which are mutually connected in a rotating way, wherein the fixed part is provided with a fixed circular waveguide 1, the left end of the fixed circular waveguide 1 is connected with a fixed converter 2, and the inner cavity is provided with a fixed filter ring 3; the rotating part is provided with a rotating circular waveguide 4, the right end of the rotating circular waveguide 4 is connected with a rotating converter 5, and the inner cavity of the rotating circular waveguide is provided with a rotating filter ring 6; the outer wall of the left end of the rotary circular waveguide 4 is rotationally connected with the inner wall of the right end of the fixed circular waveguide 1 through a bearing 7, the left side face of the bearing 7 is locked through a shaft retainer ring 8 sleeved on the rotary circular waveguide 4, the right side face of the bearing is fixed through a cover plate 9, and the cover plate 9 is connected with the right end face of the fixed circular waveguide 1 through a screw 10. The stationary transformer 2 and the rotary transformer 5 mainly perform mode conversion, and the stationary filter ring 3 and the rotary filter ring 6 mainly filter out unwanted modes. The converter and the filter ring are respectively arranged on the fixed part and the rotating part, so that the conversion and the filtration of modes are ensured, the low-loss and high-efficiency transmission of high-power signals is realized, the insertion loss is ensured to be below 1.25dB, and the index requirement of a high-transmitting-power system can be met.
The inner cavity of the fixed circular waveguide 1 and the inner cavity of the rotary circular waveguide 4 are respectively provided with a step, and the fixed filtering ring 3 and the rotary filtering ring 6 are respectively bonded on the corresponding steps.
As shown in fig. 1, a fixed rectangular waveguide 11 is radially welded to the fixed circular waveguide 1, and the fixed rectangular waveguide 11 is communicated with an inner cavity of the fixed circular waveguide 1; the rotating circular waveguide 4 is radially welded with a rotating rectangular waveguide 12, and the rotating rectangular waveguide 12 is communicated with the inner cavity of the rotating circular waveguide 4.
As shown in fig. 2, a C-shaped choke groove 13 is left between the right end of the inner cavity of the fixed circular waveguide 1 and the left end of the inner cavity of the rotary circular waveguide 4 for reducing friction when the rotary circular waveguide 4 rotates and the influence of friction temperature rise on high-power signal transmission. Through the choke groove, a mutual nested structure is formed between the fixed circular waveguide and the rotary circular waveguide, so that good transmission performance between the rotary circular waveguide and the fixed circular waveguide is ensured, and stable rotation of the joint is realized.
As shown in fig. 1, two bearings 7 are provided in parallel, and an adjusting ring is provided between the two bearings 7, so that not only the axial movement of the bearings 7 can be restricted, but also the size of the choke groove 13 between the fixed circular waveguide 1 and the rotary circular waveguide 4 can be adjusted. In the present embodiment, both bearings 7 are deep groove ball bearings; the adjusting ring is divided into an inner adjusting ring 14 and an outer adjusting ring 15, two ends of the inner adjusting ring 14 are respectively connected with the inner rings of the two bearings 7 in an abutting mode, and two ends of the outer adjusting ring 15 are respectively connected with the outer rings of the two bearings 7 in an abutting mode.
In summary, the whole rotary joint has the characteristics of compact structure, convenience in processing, low cost, quickness in installation, convenience in debugging and the like, mode conversion and filtration are guaranteed, and high-power signal low-loss and high-efficiency transmission is realized.
The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.
Claims (7)
1. A high-power broadband rotary joint comprises a fixed part and a rotary part which are mutually rotationally connected, and is characterized in that the fixed part is provided with a fixed circular waveguide, the left end of the fixed circular waveguide is connected with a fixed converter, and an inner cavity of the fixed circular waveguide is provided with a fixed filter ring; the rotating part is provided with a rotating circular waveguide, the right end of the rotating circular waveguide is connected with a rotating converter, and an inner cavity of the rotating circular waveguide is provided with a rotating filter ring; the outer wall of the left end of the rotary circular waveguide is rotatably connected with the inner wall of the right end of the fixed circular waveguide through a bearing, the left side face of the bearing is locked through a shaft check ring sleeved on the rotary circular waveguide, the right side face of the bearing is fixed through a cover plate, and the cover plate is connected with the right end face of the fixed circular waveguide through a screw.
2. The high-power broadband rotary joint according to claim 1, wherein the fixed circular waveguide cavity and the rotary circular waveguide cavity are respectively provided with a step, and the fixed filter ring and the rotary filter ring are respectively bonded to the corresponding steps.
3. The high-power broadband rotary joint according to claim 2, wherein a fixed rectangular waveguide is welded radially to the fixed circular waveguide, and the fixed rectangular waveguide is communicated with the inner cavity of the fixed circular waveguide; the rotary circular waveguide is radially welded with a rotary rectangular waveguide, and the rotary rectangular waveguide is communicated with the inner cavity of the rotary circular waveguide.
4. The high-power broadband rotary joint according to any one of claims 1 to 3, wherein a C-shaped choke groove is reserved between the right end of the inner cavity of the fixed circular waveguide and the left end of the inner cavity of the rotary circular waveguide.
5. The high power wide band rotary joint according to claim 1, wherein there are two of said bearings in parallel, and an adjusting ring is disposed between said two bearings.
6. The high-power broadband rotary joint according to claim 5, wherein the adjusting ring is divided into an inner adjusting ring and an outer adjusting ring, two ends of the inner adjusting ring are respectively connected with the inner rings of the two bearings in an abutting mode, and two ends of the outer adjusting ring are respectively connected with the outer rings of the two bearings in an abutting mode.
7. The high-power broadband rotary joint according to claim 5 or 6, wherein both bearings are deep groove ball bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922437052.6U CN211376894U (en) | 2019-12-30 | 2019-12-30 | High-power broadband rotary joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922437052.6U CN211376894U (en) | 2019-12-30 | 2019-12-30 | High-power broadband rotary joint |
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| Publication Number | Publication Date |
|---|---|
| CN211376894U true CN211376894U (en) | 2020-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922437052.6U Active CN211376894U (en) | 2019-12-30 | 2019-12-30 | High-power broadband rotary joint |
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| CN (1) | CN211376894U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112635935A (en) * | 2020-12-21 | 2021-04-09 | 北京然载通讯科技有限公司 | Hollow single-channel rotary joint |
| CN114069170A (en) * | 2021-09-30 | 2022-02-18 | 北京空间飞行器总体设计部 | Dual-band rotary joint suitable for Mars is surveyed |
| CN114256568A (en) * | 2021-11-22 | 2022-03-29 | 电子科技大学 | High-power multimode broadband rotary joint |
| CN115084804A (en) * | 2022-06-28 | 2022-09-20 | 电子科技大学 | GW level circle TM 01 Mould vacuum rotary joint |
-
2019
- 2019-12-30 CN CN201922437052.6U patent/CN211376894U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112635935A (en) * | 2020-12-21 | 2021-04-09 | 北京然载通讯科技有限公司 | Hollow single-channel rotary joint |
| CN114069170A (en) * | 2021-09-30 | 2022-02-18 | 北京空间飞行器总体设计部 | Dual-band rotary joint suitable for Mars is surveyed |
| CN114256568A (en) * | 2021-11-22 | 2022-03-29 | 电子科技大学 | High-power multimode broadband rotary joint |
| CN115084804A (en) * | 2022-06-28 | 2022-09-20 | 电子科技大学 | GW level circle TM 01 Mould vacuum rotary joint |
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