阅读说明：本技术 一种两路波导一路同轴旋转关节 (Two-way waveguide one-way coaxial rotary joint ) 是由 刘明 于 2021-02-04 设计创作，主要内容包括：本发明公开了一种两路波导一路同轴旋转关节,包括中空结构的壳体及固定安装在壳体两端的定子部和转子部,定子部和转子部之间设有连接二者的中心杆,定子部从内到外依次设有第一波导体、第二波导体和第一SMA接头,第一波导体和第二波导体之间设有隔离的第一放置环,第二波导体和第一SMA接头之间设有第一SMA支撑板；转子部从内到外依次设有第三波导体、第四波导体和第二SMA接头,第三波导体和第四波导体之间设有隔离的第二放置环,第四波导体和第二SMA接头之间设有第二SMA支撑板。本发明的有益效果：采用高精度轴承连接,保证同轴心旋转；整体的结构紧凑,整体器件尺寸减小；加入石墨环形成物理隔离,保证信号之间不会互相干扰。(The invention discloses a two-path waveguide one-path coaxial rotary joint which comprises a shell with a hollow structure, and a stator part and a rotor part which are fixedly arranged at two ends of the shell, wherein a central rod for connecting the stator part and the rotor part is arranged between the stator part and the rotor part; rotor portion is equipped with third wave conductor, fourth wave conductor and second SMA from inside to outside in proper order and connects, is equipped with the second of keeping apart between third wave conductor and the fourth wave conductor and places the ring, is equipped with the second SMA backup pad between fourth wave conductor and the second SMA joint. The invention has the beneficial effects that: the high-precision bearing connection is adopted, and coaxial rotation is guaranteed; the whole structure is compact, and the size of the whole device is reduced; graphite rings are added to form physical isolation, so that signals cannot interfere with each other.)

1. A two-way waveguide one-way coaxial rotary joint comprises a shell (1) with a hollow structure, a stator part and a rotor part which are respectively and fixedly arranged at two ends of the shell (1), characterized in that a central rod (4) for connecting the stator part and the rotor part is arranged between the stator part and the rotor part, the stator part is sequentially provided with a first waveguide (2), a second waveguide (2-1) and a first SMA joint (2-2) from inside to outside, a first isolated placing ring (2-3) is arranged between the first waveguide body (2) and the second waveguide body (2-1), a first SMA support plate (2-4) is arranged between the second waveguide (2-1) and the first SMA connector (2-2), the second waveguide body (2-1) is fixedly connected with the shell (1) through a pressing cap bolt;

rotor portion is equipped with third wave conductor (3), fourth wave conductor (3-1) and second SMA from inside to outside in proper order and connects (3-2), third wave conductor (3) are installed inside casing (1), the outside cover of third wave conductor (3) be equipped with casing (1) fixed mounting's first bearing (1-1), third wave conductor (3) with it places ring (3-3) to be equipped with the second of keeping apart between fourth wave conductor (3-1), fourth wave conductor (3-1) with be equipped with second SMA backup pad (3-4) between second SMA connects (3-2), third wave conductor (3) pass through the bearing nut with casing (1) fixed connection.

2. The two-way waveguide one-way coaxial rotary joint according to claim 1, wherein the second waveguide (2-1) is fixedly connected with the first waveguide (2) through a cap-pressing bolt, and the first SMA joint (2-2) is fixed on the second waveguide (2-1) through a first SMA support plate (2-4).

3. Two-way waveguide one-way coaxial rotary joint according to claim 2, characterized in that the first SMA joint (2-2) is provided with a first central conductor (5) in contact with the central rod (4), and a joint composed of cables is welded at one end of the first central conductor (5) in contact with the central rod (4).

4. The two-waveguide one-path coaxial rotary joint according to claim 1, wherein bearing nuts connected with the third waveguide (3) are arranged inside and outside the housing (1), the third waveguide (3) is sleeved on an inner ring of the first bearing nut (1-2) inside the housing, and a second bearing nut (1-3) for pressing the third waveguide (3) is arranged outside the housing (1).

5. The two-way waveguide one-way coaxial rotary joint according to claim 1, wherein two first bearings (1-1) are arranged adjacently, and the adjacent contact surfaces of the two first bearings (1-1) are provided with gaskets (1-4).

6. The two-way waveguide one-way coaxial rotary joint according to claim 1, wherein the first placing ring (2-3) extends to one side of the third waveguide (3) to form a long cylinder, and the end of the long cylinder penetrates through the second placing ring (3-3).

7. A two-way waveguide one-way coaxial rotary joint according to claim 6, characterized in that a first graphite ring (3-5) is arranged between the cylinder and the second placing ring (3-3), and a second bearing (3-6) is arranged between the long cylinder and the fourth wave conductor (3-1).

8. The two-way waveguide one-way coaxial rotary joint according to claim 1, wherein a second central conductor (6) in contact with the central rod (4) is arranged inside the second SMA connector (3-2), the middle part of the second central conductor (6) is a fracture structure, and a contact rod (6-1) and a spring (6-2) are respectively arranged on the inner side and the outer side of the fracture structure.

9. The two-way waveguide one-way coaxial rotary joint according to claim 1, wherein a second graphite ring (3-7) is arranged between the second SMA support plate (3-4) and the second SMA joint (3-2).

Technical Field

The invention relates to the technical field of microwave rotary joints, in particular to a two-path waveguide one-path coaxial rotary joint.

Background

The microwave rotary joint is a special device with electromechanical integration characteristic, which ensures that microwave signal transmission is uninterrupted in the radar tracking rotation process, the domestic microwave rotary joint technology is continuously improved along with the development of radar communication technology, and the technology covers various fields of wireless communication nowadays, is mature, and mainly comprises two microwave rotary joints of a contact type and a non-contact type.

Due to different use environments, the rotary joint has certain limitations and a complex structure, so that the number of internal parts is too large, and the size is too large; when in use, the rotating part assembly gap and the use environment cause thermal deformation, so that the coaxial difference is generated, and the rotation fluctuation is overlarge; and effective isolation is not adopted among all channels, so that the isolation degree is poor, and signals are mutually interfered.

An effective solution to the problems in the related art has not been proposed yet.

Disclosure of Invention

In view of the above technical problems in the related art, the present invention provides a two-way waveguide one-way coaxial rotary joint, which can overcome the above disadvantages in the prior art.

In order to achieve the technical purpose, the technical scheme of the invention is realized as follows: a two-path waveguide one-path coaxial rotary joint comprises a shell of a hollow structure, and a stator part and a rotor part which are fixedly arranged at two ends of the shell respectively, wherein a central rod for connecting the stator part and the rotor part is arranged between the stator part and the rotor part, the stator part is sequentially provided with a first waveguide, a second waveguide and a first SMA joint from inside to outside, an isolated first placing ring is arranged between the first waveguide and the second waveguide, a first SMA supporting plate is arranged between the second waveguide and the first SMA joint, and the second waveguide is fixedly connected with the shell through a cap pressing bolt;

rotor portion is equipped with third wave conductor, fourth wave conductor and second SMA from inside to outside in proper order and connects, the third wave conductor is installed inside the casing, the outside cover of third wave conductor be equipped with casing fixed mounting's first bearing, the third wave conductor with it places the ring to be equipped with the second of keeping apart between the fourth wave conductor, the fourth wave conductor with be equipped with the second SMA backup pad between the second SMA connects, the third wave conductor pass through the bearing nut with casing fixed connection.

Furthermore, the second waveguide is fixedly connected with the first waveguide through a pressing cap bolt, and the first SMA joint is fixed on the second waveguide through a first SMA support plate.

Further, first SMA connects be equipped with the first center conductor of well core rod contact, first center conductor with the one end welding that well core rod contact has the joint of constituteing by the cable conductor.

Furthermore, bearing nuts connected with the third wave conductor are arranged inside and outside the shell, the third wave conductor is sleeved on an inner ring of the first bearing nut inside the shell, and a second bearing nut for compressing the third wave conductor is arranged outside the shell.

Furthermore, the first bearings are arranged in two adjacent positions, and gaskets are arranged on the adjacent contact surfaces of the two first bearings.

Furthermore, a long cylinder extends towards one side of the third wave conductor from the first placing ring, and the end of the long cylinder penetrates through the second placing ring.

Further, a first graphite ring is arranged between the cylinder and the second placing ring, and a second bearing is arranged between the long cylinder and the fourth wave conductor.

Furthermore, the inside of second SMA connects be equipped with the second central conductor of well core rod contact, the middle part of second central conductor is rupture structure, and rupture structure's inboard and outside are equipped with contact rod and spring respectively.

Further, a second graphite ring is arranged between the second SMA support plate and the second SMA joint.

The invention has the beneficial effects that: the rotor and the stator are connected through a high-precision bearing through an assembly gap at a combined part of the rotor and the stator, so that coaxial rotation is ensured; the whole structure is compact, and the size of the whole device is reduced; the graphite ring is added on the placing ring, and the graphite ring is added between the SMA supporting plate and the central rod to form physical isolation, so that signals cannot interfere with each other.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a two-way waveguide one-way coaxial rotary joint according to an embodiment of the present invention.

In the figure: 1. a housing; 1-1, a first bearing; 1-2, a first bearing nut; 1-3, a second bearing nut; 1-4, a gasket; 2. a first waveguide; 2-1, a second waveguide; 2-2, a first SMA connector; 2-3, a first placing ring; 2-4, a first SMA support plate; 3. a third wave conductor; 3-1, a fourth wave conductor; 3-2, a second SMA connector; 3-3, a second placing ring; 3-4, a second SMA support plate; 3-5, a first graphite ring; 3-6, a second bearing; 3-7, a second graphite ring; 4. a center pole; 5. a first center conductor; 6. a second center conductor; 6-1, a contact rod; 6-2 and a spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.

As shown in fig. 1, the two-way waveguide one-way coaxial rotary joint according to the embodiment of the present invention includes a housing 1 having a hollow structure, and a stator part and a rotor part fixedly mounted at two ends of the housing 1, respectively, a center rod 4 connecting the stator part and the rotor part is disposed between the stator part and the rotor part, the stator part is sequentially provided with a first waveguide 2, a second waveguide 2-1 and a first SMA joint 2-2 from inside to outside, an isolated first placing ring 2-3 is disposed between the first waveguide 2 and the second waveguide 2-1, a first SMA support plate 2-4 is disposed between the second waveguide 2-1 and the first SMA joint 2-2, and the second waveguide 2-1 is fixedly connected to the housing 1 by a cap-pressing bolt;

rotor portion is equipped with third wave conductor 3, fourth wave conductor 3-1 and second SMA from inside to outside in proper order and connects 3-2, third wave conductor 3 installs 1 inside the casing, the outside cover of third wave conductor 3 be equipped with 1 fixed mounting's of casing first bearing 1-1, third wave conductor 3 with it places ring 3-3 to be equipped with the second of keeping apart between the fourth wave conductor 3-1, fourth wave conductor 3-1 with second SMA connects and is equipped with second SMA backup pad 3-4 between 3-2, third wave conductor 3 pass through the bearing nut with 1 fixed connection of casing.

In a specific embodiment of the present invention, the second waveguide 2-1 is fixedly connected to the first waveguide 2 by a cap-and-bolt, and the first SMA contact 2-2 is fixed to the second waveguide 2-1 by a first SMA support plate 2-4.

In a specific embodiment of the present invention, the first SMA joint 2-2 is provided with a first central conductor 5 in contact with the central rod 4, and a joint composed of cable wires is welded to one end of the first central conductor 5 in contact with the central rod 4.

In a specific embodiment of the present invention, the inside and the outside of the housing 1 are both provided with bearing nuts connected to the third wave conductor 3, the third wave conductor 3 is sleeved on the inner ring of the first bearing nut 1-2 inside the housing, and the outside of the housing 1 is provided with a second bearing nut 1-3 pressing the third wave conductor 3.

In a specific embodiment of the invention, two first bearings 1-1 are provided and are adjacently arranged, and the adjacent contact surfaces of the two first bearings 1-1 are provided with gaskets 1-4.

In a specific embodiment of the present invention, the first placing ring 2-3 extends to one side of the third wave conductor 3 to form an elongated cylinder, and the end of the elongated cylinder passes through the second placing ring 3-3.

In a specific embodiment of the invention, a first graphite ring 3-5 is arranged between the cylinder and the second placing ring 3-3, and a second bearing 3-6 is arranged between the long cylinder and the fourth wave conductor 3-1.

In a specific embodiment of the present invention, a second central conductor 6 contacting with the central rod 4 is disposed inside the second SMA contact 3-2, the middle of the second central conductor 6 is a fracture structure, and a contact rod 6-1 and a spring 6-2 are disposed inside and outside the fracture structure, respectively.

In a specific embodiment of the present invention, a second graphite ring 3-7 is provided between the second SMA support plate 3-4 and the second SMA joint 3-2.

In order to facilitate understanding of the above-described technical aspects of the present invention, the above-described technical aspects of the present invention will be described in detail below in terms of specific usage.

The invention relates to a two-path waveguide one-path coaxial rotary joint, which comprises a shell 1 with a hollow structure, and a stator part and a rotor part which are fixedly arranged at two ends of the shell 1, wherein a central rod 4 for connecting the stator part and the rotor part is arranged between the stator part and the rotor part, the stator part is sequentially provided with a first waveguide 2, a second waveguide 2-1 and a first SMA joint 2-2 from inside to outside, an isolated first placing ring 2-3 is arranged between the first waveguide 2 and the second waveguide 2-1, a long cylinder extends towards one side of a third waveguide 3 from the first placing ring 2-3, the end part of the long cylinder penetrates through the second placing ring 3-3 for physical isolation, openings are respectively arranged towards the outside of the first waveguide 2 and the second waveguide 2-1, a first SMA supporting plate 2-4 is arranged between the second waveguide 2-1 and the first SMA joint 2-2, the first SMA connector 2-2 is fixed on the second waveguide 2-1 through a first SMA support plate 2-4, the first SMA connector 2-2 is provided with a first central conductor 5 in contact with the central rod 4, and one end of the first central conductor 5 in contact with the central rod 4 is welded with a connector consisting of cables and used for being communicated with the central rod 4; a first placing ring 2-3 is placed in a hole of a first waveguide 2, a second waveguide 2-1 is placed on the first placing ring 2-3 and connected with the first waveguide 2 through a pressing cap bolt, a first SMA supporting plate 2-4 and a central rod 4 are sequentially placed on the second waveguide 2-1, an insulator and a first central conductor 5 are sequentially inserted into the inner hole of the first SMA connector 2-2, a connector of a welding cable is inserted into the first central conductor 5, and the pressing cap is used for locking and fixing the second waveguide 2-1 on the clip through the bolt, so that the stator part can be installed.

The rotor part is equipped with third wave conductor 3, fourth wave conductor 3-1 and second SMA joint 3-2 from inside to outside in proper order, and third wave conductor 3 and fourth wave conductor 3-1 all are equipped with the opening towards the outside, and third wave conductor 3 installs inside casing 1, and the outside cover of third wave conductor 3 is equipped with the first bearing 1-1 with casing 1 fixed mounting, is equipped with the second of keeping apart between third wave conductor 3 and the fourth wave conductor 3-1 and places ring 3-3, is equipped with second SMA backup pad 3-4 between fourth wave conductor 3-1 and the second SMA joint 3-2, and third wave conductor 3 passes through bearing nut and casing 1 fixed connection.

One end of a third wave conductor 3 is inserted into the first bearing nut 1-2, the two first bearings 1-1 and the gasket 1-4 in sequence and locked by the second bearing nut 1-3; and an insulator and a second central conductor 6 are sequentially inserted into an inner hole of the second SMA connector 3-2, the second central conductor 6 is in contact with the central rod 4, the middle part of the second central conductor 6 is of a fracture structure, and a contact rod 6-1 and a spring 6-2 are installed on the fracture structure to complete the installation of the rotor part.

A first graphite ring 3-5 is arranged between the cylinder and the second placing ring 3-3 and used for physical isolation, a second bearing 3-6 is arranged between the long cylinder and the fourth wave conductor 3-1 and used for ensuring coaxial rotation during rotation, and a second graphite ring 3-7 is arranged between the second SMA support plate 3-4 and the second SMA connector 3-2.

Bearing nuts connected with a third wave conductor 3 are arranged inside and outside the shell 1, the third wave conductor 3 is sleeved on an inner ring of a first bearing nut 1-2 inside the shell, and a second bearing nut 1-3 for pressing the third wave conductor 3 is arranged outside the shell 1; two first bearings 1-1 are arranged and are arranged adjacently, and gaskets 1-4 are arranged on the adjacent contact surfaces of the two first bearings 1-1.

In conclusion, by means of the technical scheme, the rotor and the stator are connected through the assembly gap of the combination part of the rotor and the stator by adopting the high-precision bearing, so that coaxial rotation is ensured; the whole structure is compact, and the size of the whole device is reduced; the graphite ring is added on the placing ring, and the graphite ring is added between the SMA supporting plate and the central rod to form physical isolation, so that signals cannot interfere with each other.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.