CN112201913B - Three-channel broadband coaxial rotating hinge and implementation method thereof - Google Patents
Three-channel broadband coaxial rotating hinge and implementation method thereof Download PDFInfo
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- CN112201913B CN112201913B CN202011046477.5A CN202011046477A CN112201913B CN 112201913 B CN112201913 B CN 112201913B CN 202011046477 A CN202011046477 A CN 202011046477A CN 112201913 B CN112201913 B CN 112201913B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/06—Movable joints, e.g. rotating joints
- H01P1/062—Movable joints, e.g. rotating joints the relative movement being a rotation
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P11/00—Apparatus or processes specially adapted for manufacturing waveguides or resonators, lines, or other devices of the waveguide type
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Abstract
The invention relates to a three-channel broadband coaxial rotating hinge and an implementation method thereof, and mainly solves the problems of signal transmission, coupling conversion and three-channel integration of a rotating end and a fixed end of a first channel. The first channel rotary transition radio frequency socket and the rotary end coaxial line and the fixed end radio frequency socket and the fixed end coaxial line are electrically connected through the first transition reed and the second transition reed respectively, the second channel medium sleeve is clamped on the first channel fixed end coaxial line outer conductor, and the transmission ring is embedded in the medium sleeve, so that the first channel cavity and the second channel cavity are small in space size, the working frequency of the rotary hinge is high, and the bandwidth is wide. Two radio frequency cables penetrating through a third channel sleeve and a rotary transition step shaft are respectively connected with a first channel rotary transition radio frequency socket and a second channel rotary transition radio frequency socket, the sleeve is embedded with the rotary transition step shaft, the first channel and the second channel are integrated in a radial overlapping mode, the third channel and the first channel and the second channel are integrated in an axial stacking mode, and the three channels are structurally independent and modularly integrated.
Description
Technical Field
The invention is suitable for electronic equipment such as modern radars and the like, and belongs to the technical field of radar antennas and microwaves.
Background
When the radar antenna works in an all-directional rotating mode, the rotating end and the fixed end of the rotating hinge rotate relatively, and the rotating hinge can normally transmit radar signals. Along with the expansion of radar functions, the requirements on the rotating hinge are higher and higher, the working frequency is high, the frequency band is wide, and the number of integrated channels is large.
The three-channel broadband coaxial rotating hinge can be used for a passive broadband detection antenna, and three channels are receiving channels, wherein the third channel requires the working frequency to be 4GHz and the frequency band to be DC-4 GHz, the first channel and the second channel require the working frequency to be 8GHz and the frequency band to be DC-8 GHz. For the first channel coaxial rotating hinge, if the existing first channel rotating end coaxial line and first channel rotating transition radio frequency socket as well as the first channel fixed end coaxial line and first channel fixed end radio frequency socket integral structure design are adopted to realize the signal transmission and coupling conversion of the rotating end and the fixed end of the first channel coaxial rotating hinge, the processing and assembling difficulty of the rotating end and the fixed end of the first channel coaxial rotating hinge is high, and the requirements of the first channel coaxial rotating hinge on high working frequency and broadband are not satisfied, the signal transmission and coupling conversion between the rotating end and the fixed end of the second channel coaxial rotating hinge adopts the transmission ring contact coupling conversion structure form explained in the patent 'realization method of broadband stackable coaxial rotating hinge' (ZL201410707111.6), the invention does not particularly explain the design technology, wherein the third channel coaxial rotating sleeve is connected with the fourth cavity embedded in the second flange plate, the transmission ring is embedded in a medium sleeve clamped on the sleeve, a second flange plate at the rotating end of the rotating hinge and a first flange plate at the fixed end of the rotating hinge rotate relatively, the sleeve penetrates through the first flange plate, for a second channel coaxial rotating hinge, if the sleeve for clamping the medium sleeve is designed by adopting the integral structure of the existing third channel coaxial rotating hinge sleeve, a radio-frequency cable of a first channel must penetrate through a sleeve through hole of the second channel clamping medium sleeve, the axial and radial space sizes of a cavity of the second channel coaxial rotating hinge are large, the requirements of high working frequency and wide frequency band of the second channel are not met, if the existing first channel coaxial rotating hinge and the existing second channel coaxial rotating hinge are adopted to realize the wide-band three-channel coaxial rotating hinge, the first channel and the second channel can only adopt an axial accumulation mode, the wide-band three-channel coaxial rotating hinge is large in miniaturization integration difficulty and low in reliability.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a three-channel broadband coaxial rotating hinge which consists of a first channel, a second channel and a third channel, wherein the three channels are mutually independent in structure, high in working frequency and wide in frequency band.
The invention is realized by the following technical scheme:
a three-channel broadband coaxial rotating hinge is disclosed, wherein a first channel mainly comprises a first channel rotating end coaxial line 5, a first channel fixed end coaxial line 6, a first channel rotating transition radio frequency socket I-1 a and a first channel fixed end radio frequency socket I-2, the first channel rotating end coaxial line 5 and the first channel fixed end coaxial line 6 form a first channel coaxial rotating hinge cavity, the first channel rotating end coaxial line 5 and the first channel fixed end coaxial line 6 rotate relatively, a transition reed II 24-2 is arranged between the first channel fixed end radio frequency socket I-2 and an outer conductor 18 of the first channel fixed end coaxial line 6, the first channel fixed end radio frequency socket I-2 is connected with a first end cover 1 by screw threads, a transition reed I24-1 is arranged between the first channel rotating transition radio frequency socket I-1 a and an outer conductor I20 of the first channel rotating end coaxial line 5, the first channel rotary transition radio frequency socket I-1 a is connected with the second end cover 2 by screw thread, one end of the second outer conductor 21 of the first channel rotary end coaxial line 5 is connected with the first outer conductor 20 of the first channel rotary end coaxial line 5 in a plugging way to form the outer conductor of the first channel rotary end coaxial line 5, one end of the inner conductor 22 of the first channel rotary end coaxial line 5 is embedded in the first channel rotary transition radio frequency socket I-1 a, one end of the inner conductor 19 of the first channel fixed end coaxial line 6 is embedded in the first channel fixed end radio frequency socket I-2, the outer wall of the other end of the second outer conductor 21 of the first channel rotary end coaxial line 5 is designed into a multi-lobe shape, the other end of the inner conductor 22 of the first channel rotary end coaxial line 5 is designed into a step, the other end of the inner conductor 19 of the first channel fixed end coaxial line 6 is designed into a deep hole, the depth of the deep hole is matched with the length of the step of the other end of the inner conductor 22 of the first channel rotary end coaxial line 5, the outer wall design of the 19 deep hole sections of the first channel fixed end coaxial line 6 inner conductor is multi-petal, the outer wall of the two 21 other ends of the first channel rotating end coaxial line 5 outer conductor is in contact sliding fit with the 18 first channel fixed end coaxial line 6 outer conductor, the other end of the first channel rotating end coaxial line 5 inner conductor 22 is inserted into the 19 other end deep hole of the first channel fixed end coaxial line 6 inner conductor, so that the contact sliding fit is formed between the first channel rotating end coaxial line 5 inner conductor 22 and the first channel fixed end coaxial line 6 inner conductor 19, the transmission of the first channel broadband coaxial rotating hinge rotating end and fixed end signals is realized, and the coupling conversion is realized.
The technical scheme of the invention also comprises three-channel broadband coaxial rotating hinge miniaturization and high-reliability integration. The implementation methods of the signal transmission devices of the rotating end and the fixed end of the three-channel broadband coaxial rotating hinge and the signal coupling conversion mechanism between the rotating end and the fixed end are already disclosed technologies, and the design technologies of the signal transmission devices are not specifically explained in the invention. The third channel mainly comprises a first flange plate 13, a second flange plate 14, a third cavity 15, a fourth cavity, a third channel rotating end radio frequency socket III-1, a third channel fixed end radio frequency socket III-2 and a first bearing end cover 7, the third channel rotating end radio frequency socket III-1 is arranged on the second flange plate 14, the third channel fixed end radio frequency socket III-2 is arranged on the outer shell 9, the third cavity 15 is connected with the first flange plate 13, the fourth cavity is embedded in the second flange plate 14, the third cavity 15 and the fourth cavity relatively rotate to form a third channel coaxial rotating hinge cavity, the sleeve 10 is connected with the fourth cavity, the mounting seat 16 is connected with the second flange plate 14, the first flange plate 13 is connected with the outer shell 9, the rotating transition step shaft 11 is embedded with the sleeve 10, the rotating transition step shaft 11, the sleeve 10 and the mounting seat 16 are relatively static, a reed isolation belt 25 is designed between the sleeve 10 and the first flange 13, so that contact type sliding fit between the third-channel coaxial rotary hinge sleeve 10 and the first flange 13 is realized. The second channel mainly comprises a first end cover 1, a second end cover 2, a first cavity 3, a second cavity 4, a transmission ring 17, a medium sleeve 23, a second channel rotary transition radio frequency socket II-1 a and a second channel fixed end radio frequency socket II-2, wherein the first cavity 3 is connected with the first end cover 1, the second cavity 4 is connected with the second end cover 2, the first cavity 3 and the second cavity 4 relatively rotate to form a second channel coaxial rotary hinge cavity, two steps with different outer diameters are designed at one end of a coaxial line 6 outer conductor 18 at the first channel fixed end, straight knurling is designed on the circumferential surface of the step with the small outer diameter, the medium sleeve 23 is clamped at one end of the coaxial line 6 outer conductor 18 at the first channel fixed end, the transmission ring 17 is sleeved on the medium sleeve 23, and the second channel rotary transition radio frequency socket II-1 a and the second channel fixed end radio frequency socket II-2 relatively rotate, the first end cover 1 is connected with the outer shell 9, the second end cover 2 is connected with the rotary transition step shaft 11, a bearing 26, a bearing locking nut 27 and a second bearing end cover 8 are arranged between the first end cover 1 and the second cavity 4, the rotary transition step shaft 11 and the sleeve 10 rotate simultaneously due to the rotation of a third channel, the second end cover 2 connected with the rotary transition step shaft 11 is driven to rotate together, the first channel rotary end radio frequency sockets I-1 and II-1 are installed on the installation seat 16, the first channel radio frequency cables 12-1 and 12-2 respectively connected with the first channel rotary end radio frequency sockets I-1 and II-1 penetrate through holes of the sleeve 10 and enter the rotary transition step shaft 11, and connectors of the first channel radio frequency cables 12-1 and the second channel radio frequency cables 12-2 respectively and connectors of the first channel rotary transition radio frequency sockets I-1 a and II-1 a of the first channel rotary transition radio frequency sockets, II-1 a connection, the miniaturization and high reliability integration of the three-channel broadband coaxial rotating hinge is realized.
Compared with the prior art, the invention has the following remarkable advantages: (1) the first channel fixed end coaxial line 6 outer conductor 18, the first channel fixed end radio frequency socket I-2, the first channel rotating end coaxial line 5 outer conductor first 20 and the first channel rotating transition radio frequency socket I-1 a adopt split structures, and the transition reed first 24-1 and the transition reed second 24-2 are designed to realize electric connection; (2) the second channel transmission ring 17 is embedded in a medium sleeve 23 clamped on an outer conductor 18 of the coaxial line 6 at the fixed end of the first channel, the axial and radial space sizes of the cavity of the coaxial rotating hinge of the second channel are small, so that the second channel realizes signal coupling conversion between the rotating end and the fixed end at high working frequency and broadband, the rotating transition step shaft 11 is embedded with the sleeve 10, the rotating transition step shaft 11 and the sleeve 10 rotate simultaneously by rotating the third channel to drive the second end cover 2 connected with the rotating transition step shaft 11 to rotate together, the first channel and the second channel are integrated in a radial overlapping mode, the third channel and the first channel to the second channel are integrated in an axial stacking mode, the three channels of the coaxial rotating hinge of the three channels are mutually independent in structure, modularized integration is high in reliability, the working frequency of the first channel to the second channel is 8GHz, the frequency band is DC-8 GHz, the working frequency of the third channel is 4GHz, and the frequency band is DC-4 GHz.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
Fig. 1 is a schematic structural view of a three-channel broadband coaxial rotating hinge. Wherein 1 — first end cap; 2-second end cap; 3-a first cavity; 4-a second cavity; 7-a first bearing end cap; 8-second bearing end cap; 9-a housing; 10-a sleeve; 11-rotating the transition step shaft; 12-1 — a first channel radio frequency cable; 12-2-a second channel radio frequency cable; 13-a first flange; 14-a second flange; 15-a third cavity; 16-a mounting seat; i-1-first channel rotating end radio frequency receptacle; II-1-a second channel rotating end radio frequency socket; III-1-third channel rotating end radio frequency socket; III-2-a third channel fixed end radio frequency socket; i-1 a-first channel rotary transition radio frequency socket; II-1 a-a second channel rotary transition radio frequency socket; i-2, a first channel fixed end radio frequency socket; II-2-second channel fixed end radio frequency socket.
FIG. 2 is a partial schematic view of the first and second channels. 5-the rotating end of the first channel is coaxial; 6-the fixed end of the first channel is coaxial; 17 — a transmission ring; 23-a media pack; 26, a bearing; 27-bearing lock nut.
FIG. 3 is a partial schematic view of the third channel driving the first and second channels to rotationally connect. Wherein 10-a sleeve; 11-rotating the transition step shaft; 13-a first flange; 25-reed isolation zone.
Fig. 4 is a sectional view taken in the direction of fig. 3A-a.
Fig. 5 is a partial schematic view of a first channel coaxial line. 18-the first channel fixed end coaxial line 6 outer conductor; 19-inner conductor of coaxial line 6 at fixed end of first channel; 20-coaxial line 5 outer conductor one of the first channel rotation end; 21-outer conductor two of the first channel rotating end coaxial line 5; 22-inner conductor of coaxial line 5 at rotating end of first channel; 23-media jacket.
FIG. 6 is a partial schematic view of the connection of the first channel-fixed end RF jack I-2 to the first channel-fixed end coaxial line 6. 24-2-transition reed two.
Fig. 7 is a partial schematic view of the connection of the first channel rotary transition rf socket i-1 a and the first channel rotary end coaxial line 5. 24-1-transition reed one.
Detailed Description
The invention also provides a method for realizing the three-channel broadband coaxial rotating hinge, which mainly comprises the following steps:
1. designing a first channel coaxial rotating hinge cavity according to the requirements of working frequency and bandwidth, designing an outer conductor 18 and an inner conductor 19 of a first channel fixed end coaxial wire 6, an outer conductor 20, an outer conductor 21 and an inner conductor 22 of a first channel rotating end coaxial wire 5, designing a transition reed II 24-2 between a first channel fixed end radio frequency socket I-2 and the first channel fixed end coaxial wire 6 and a transition reed I24-1 between a first channel rotating transition radio frequency socket I-1 a and the first channel rotating end coaxial wire 5, and realizing the transmission and coupling conversion of signals of a first channel rotating end and a fixed end;
2. two steps with different outer diameters are designed at one end of the outer conductor 18 of the coaxial line 6 at the fixed end of the first channel, and straight knurls are designed on the circumferential surface of the step with the small outer diameter, so that the medium sleeve 23 is clamped at one end of the coaxial line 6 at the fixed end of the first channel, and the transmission ring 17 is sleeved on the medium sleeve 23, thereby realizing the coupling conversion between the signal at the rotating end of the second channel and the signal at the fixed end;
3. a third channel rotary transition step shaft 11 and a first channel sleeve 10 are designed to be embedded, the sleeve 10 drives the rotary transition step shaft 11 and a second end cover 2 connected with the rotary transition step shaft 11 to rotate together, a mounting seat 16 is designed to mount first and second channel rotary end radio frequency sockets I-1 and II-1, so that first and second channel radio frequency cables 12-1 and 12-2 respectively connected with the first and second channel rotary end radio frequency sockets I-1 and II-1 penetrate through a through hole of the sleeve 10 to enter the rotary transition step shaft 11, connectors of the first and second channel radio frequency cables 12-1 and 12-2 are respectively connected with first and second channel rotary transition radio frequency sockets I-1 a and II-1 a, and miniaturization and modularization integration of the first, second and third channels are achieved.
Claims (2)
1. A method for realizing a three-channel broadband coaxial rotating hinge is characterized by comprising the following steps: the first channel and the second channel are integrated in a radial nesting mode, the third channel and the first channel to the second channel are integrated in an axial stacking mode, three channels of a three-channel broadband coaxial rotary hinge are mutually independent in structure and are integrated in a modularized mode, a first channel rotary end coaxial line (5) and a first channel fixed end coaxial line (6) form a first channel coaxial rotary hinge cavity, a second transition reed (24-2) is designed between a first channel fixed end radio frequency socket (I-2) and an outer conductor (18) of the first channel fixed end coaxial line (6), the first channel fixed end radio frequency socket (I-2) is connected with a first end cover (1) in a threaded mode, a first transition reed (24-1) is designed between a first channel rotary transition radio frequency socket (I-1 a) and a first channel rotary end coaxial line (5) outer conductor (20), the first channel rotating transition radio frequency socket (I-1 a) is in threaded connection with the second end cover (2), one end of a second outer conductor (21) of a first channel rotating end coaxial line (5) and one end of a first outer conductor (20) of the first channel rotating end coaxial line (5) are in plug connection to form the outer conductor of the first channel rotating end coaxial line (5), one end of an inner conductor (22) of the first channel rotating end coaxial line (5) is embedded in the first channel rotating transition radio frequency socket (I-1 a), one end of an inner conductor (19) of a first channel fixed end coaxial line (6) is embedded in the first channel fixed end radio frequency socket (I-2), the outer wall of the second outer conductor (21) of the first channel rotating end coaxial line (5) is designed into a multi-lobe shape, the other end of the inner conductor (22) of the first channel rotating end coaxial line (5) is designed into a step, the other end of the inner conductor (19) of the first channel fixed end coaxial line (6) is designed into a deep hole, the depth of the deep hole is matched with the length of the step at the other end of the inner conductor (22) of the first channel rotating end coaxial line (5), the outer wall of the deep hole section of the inner conductor (19) of the first channel fixed end coaxial line (6) is designed to be multi-petal-shaped, the outer wall of the outer conductor of the second channel rotating end coaxial line (5) is multi-petal-shaped, the outer wall of the other end of the outer conductor of the second channel rotating end coaxial line (21) is in contact sliding fit with the outer conductor (18) of the first channel fixed end coaxial line (6), the other end of the inner conductor (22) of the first channel rotating end coaxial line (5) is inserted into the deep hole at the other end of the inner conductor (19) of the first channel fixed end coaxial line (6), so that the inner conductor (22) of the first channel rotating end coaxial line (5) is in contact sliding fit with the inner conductor (19) of the first channel fixed end coaxial line (6), the first cavity (3) is connected with the first end cover (1), the second cavity (4) is connected with the second end cover (2), the first cavity (3) and the second cavity (4) rotate relatively to form a second channel coaxial rotating hinge cavity, two steps with different outer diameters are designed at one end, far away from the inner conductor (19) of the first channel fixed end coaxial line (6), of the outer conductor (18) of the first channel fixed end coaxial line (6), straight-line knurls are designed on the circumferential surface of the step with the small outer diameter, a medium sleeve (23) is tightly clamped at one end, far away from the inner conductor (19) of the first channel fixed end coaxial line (6), of the outer conductor (18) of the first channel fixed end coaxial line (6), a transmission ring (17) is sleeved on the medium sleeve (23), the first end cover (1) is connected with the outer shell (9), the second end cover (2) is connected with the rotating transition step shaft (11), a bearing (26), a bearing locking nut (27) and a second bearing end cover (8) are arranged between the first end cover (1) and the second cavity (4), the third channel rotates to enable the rotary transition step shaft (11) and the sleeve (10) to rotate simultaneously, and the second end cover (2) connected with the rotary transition step shaft (11) is driven to rotate together.
2. A three-channel broadband coaxial rotary hinge realized according to the method of claim 1, characterized in that: the first channel mainly comprises a first channel rotating end coaxial line (5), a first channel fixed end coaxial line (6), a first channel rotating transition radio frequency socket (I-1 a) and a first channel fixed end radio frequency socket (I-2), the third channel mainly comprises a first flange plate (13), a second flange plate (14), a third cavity (15), a fourth cavity, a third channel rotating end radio frequency socket (III-1), a third channel fixed end radio frequency socket (III-2) and a first bearing end cover (7), the third channel rotating end radio frequency socket (III-1) is arranged on the second flange plate (14), the third channel fixed end radio frequency socket (III-2) is arranged on the outer shell (9), the third cavity (15) is connected with the first flange plate (13), and the fourth cavity is embedded in the second flange plate (14), the third cavity (15) and the fourth cavity are relatively rotated to form a third-channel coaxial rotating hinge cavity, the second channel mainly comprises a first end cover (1), a second end cover (2), a first cavity (3), a second cavity (4), a transmission ring (17), a medium sleeve (23), a second-channel rotating transition radio frequency socket (II-1 a) and a second-channel fixed end radio frequency socket (II-2), the first cavity (3) is connected with the first end cover (1), the second cavity (4) is connected with the second end cover (2), the first cavity (3) and the second cavity (4) relatively rotate to form a second-channel coaxial rotating hinge cavity, a mounting seat (16) is provided with first-channel rotating end radio frequency sockets (I-1 and II-1) and is respectively connected with the first-channel rotating end radio frequency sockets (I-1 and II-1) and the second-channel rotating end radio frequency sockets (I-1 and II-1), II-1) the first to second channel radio frequency cables (12-1, 12-2) penetrate through the through hole of the sleeve (10) and enter the rotary transition step shaft (11), and connectors of the first to second channel radio frequency cables (12-1, 12-2) are respectively connected with the first to second channel rotary transition radio frequency sockets (I-1 a, II-1 a), so that miniaturization and high reliability integration of the three-channel broadband coaxial rotary hinge is realized.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011046477.5A CN112201913B (en) | 2020-09-29 | 2020-09-29 | Three-channel broadband coaxial rotating hinge and implementation method thereof |
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| CN202011046477.5A CN112201913B (en) | 2020-09-29 | 2020-09-29 | Three-channel broadband coaxial rotating hinge and implementation method thereof |
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| CN112201913B true CN112201913B (en) | 2021-08-06 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104409798A (en) * | 2014-11-27 | 2015-03-11 | 中国船舶重工集团公司第七二四研究所 | Realizing method of stacked coaxial rotating hinges for broadband |
| CN206059629U (en) * | 2016-08-22 | 2017-03-29 | 中国船舶重工集团公司第七二四研究所 | A kind of triple channel broadband non-contact rotary hinge |
| CN106935941A (en) * | 2017-03-06 | 2017-07-07 | 京航泰（北京）科技有限公司 | Double-channel coaxial rotary joint |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| ES2235397T3 (en) * | 1998-04-15 | 2005-07-01 | Spinner Gmbh Elektrotechnische Fabrik | ROTATING COUPLING OF HF. |
| JP3560144B2 (en) * | 2000-06-19 | 2004-09-02 | 日本ピラー工業株式会社 | Multi-channel rotary joint |
| CN104064871B (en) * | 2014-07-07 | 2016-03-30 | 中国船舶重工集团公司第七二四研究所 | The implementation method of a kind of four-way high power broadband rotary gemel |
| CN204011609U (en) * | 2014-07-31 | 2014-12-10 | 南京鑫轩电子系统工程有限公司 | A kind of Multichannel microwave rotary joint |
| CN106329121B (en) * | 2016-08-19 | 2017-11-14 | 中国船舶重工集团公司第七二四研究所 | A kind of triple channel broadband non-contact rotary hinge and its implementation |
| CN108987859B (en) * | 2018-07-13 | 2020-12-04 | 中国船舶重工集团公司第七二四研究所 | Multi-path broadband high-power microwave rotating hinge and implementation method thereof |
| CN211501988U (en) * | 2019-12-27 | 2020-09-15 | 湖北哈佛水泥机械有限公司 | Hollow shaft multi-way rotary joint device with collecting ring |
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2020
- 2020-09-29 CN CN202011046477.5A patent/CN112201913B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104409798A (en) * | 2014-11-27 | 2015-03-11 | 中国船舶重工集团公司第七二四研究所 | Realizing method of stacked coaxial rotating hinges for broadband |
| CN206059629U (en) * | 2016-08-22 | 2017-03-29 | 中国船舶重工集团公司第七二四研究所 | A kind of triple channel broadband non-contact rotary hinge |
| CN106935941A (en) * | 2017-03-06 | 2017-07-07 | 京航泰（北京）科技有限公司 | Double-channel coaxial rotary joint |
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