阅读说明：本技术 一种中空单通道旋转关节 (Hollow single-channel rotary joint ) 是由 朱珠 刘建贺 于 2020-12-21 设计创作，主要内容包括：本发明公开了一种中空单通道旋转关节,包括面向安装的转子外壳和定子外壳,转子外壳的外侧与定子外壳的内侧形成的空间内设置有轴承,转子外壳的内侧腔体通过螺钉安装有绝缘支撑板,绝缘支撑板另一侧通过螺钉安装有转子中心针；定子外壳远离转子中心针的一侧设有定子孔,定子孔内固定安装有PEEK支撑片,PEEK支撑片固定安装有定子中心针,定子中心针内侧固定连接有异形弹片；转子中心针与定子中心针之间设有与绝缘支撑板焊接的摩擦环,异形弹片的一端与摩擦环相接触。多通道旋转关节中各个通道指标的小型化,一致性,可靠性,稳定性,提高生产力,降低成本等问题,以达到经济效益最大化。(The invention discloses a hollow single-channel rotary joint, which comprises a rotor shell and a stator shell which are installed in a facing manner, wherein a bearing is arranged in a space formed by the outer side of the rotor shell and the inner side of the stator shell, an insulating support plate is installed on the inner side cavity of the rotor shell through a screw, and a rotor center needle is installed on the other side of the insulating support plate through a screw; a stator hole is formed in one side, away from the rotor center needle, of the stator shell, a PEEK supporting sheet is fixedly installed in the stator hole, a stator center needle is fixedly installed on the PEEK supporting sheet, and a special-shaped elastic sheet is fixedly connected to the inner side of the stator center needle; a friction ring welded with the insulating support plate is arranged between the rotor center pin and the stator center pin, and one end of the special-shaped elastic sheet is in contact with the friction ring. Miniaturization, consistency, reliability and stability of indexes of all channels in the multi-channel rotary joint, improvement of productivity, reduction of cost and the like, so that economic benefit maximization is achieved.)

1. A hollow single-channel rotary joint comprises a rotor shell (1) and a stator shell (2) which are installed in a facing mode, wherein a bearing (3) is arranged in a space formed by the outer side of the rotor shell (1) and the inner side of the stator shell (2), and the hollow single-channel rotary joint is characterized in that an insulating support plate (1-1) is installed on the inner side cavity of the rotor shell (1) through a screw, a rotor center needle (1-2) is installed on the other side of the insulating support plate (1-1) through a screw, and the rotor center needle (1-2) is connected with a rotor signal transmission line (1-3) arranged on the outer side of the rotor shell (1);

one side, far away from the rotor center needle (1-2), of the stator shell (2) is provided with a stator hole (2-1), a PEEK supporting sheet (2-2) is fixedly installed in the stator hole (2-1), a stator center needle (2-3) is fixedly installed on the PEEK supporting sheet (2-2), the inner side of the stator center needle (2-3) is fixedly connected with a special-shaped elastic sheet (2-4), and the stator center needle (2-3) is connected with a stator signal transmission line (2-5) arranged on the outer side of the stator shell (2);

a friction ring (1-4) welded with the insulating support plate (1-1) is arranged between the rotor center pin (1-2) and the stator center pin (2-3), and one end of the special-shaped elastic sheet (2-4) is in contact with the friction ring (1-4).

2. A hollow single channel rotary joint according to claim 1, characterized in that the central hole of the rotor housing (1) passes through the stator housing (2).

3. A hollow single-channel rotary joint according to claim 1, characterized in that bearing covers (3-1) fixing the bearings (3) are mounted on the outside of the rotor housing (1) and the stator housing (2).

4. The hollow single-channel rotary joint according to claim 1, characterized in that a rotor cover (1-5) is welded on the outside of the rotor housing (1), and the rotor signal transmission line (1-3) passes through the rotor cover (1-5).

5. A hollow single channel rotary joint according to claim 1, characterized in that the bearing (3) is provided with a locking nut (3-1) on the side close to the stator housing (2).

6. Hollow single-channel rotary joint according to claim 5, characterized in that the locking nut (3-1) is provided on its outside with a height adjusting ring (4), said height adjusting ring (4) being mounted between the stator housing (2) and the bearing (3).

7. The hollow single-channel rotary joint as claimed in claim 1, wherein the PEEK support sheet (2-2) is formed by two semicircular structures, and the middle part of the PEEK support sheet (2-2) is a square rotation-stopping groove for fixing the stator center pin (2-3).

8. The hollow single-channel rotary joint according to claim 1, wherein the rotor central needle (1-2) is provided with a rotor flange fixedly mounted on the rotor housing (1) on the outer side, and the stator central needle (2-3) is provided with a stator flange fixedly mounted on the stator housing (2) on the outer side.

9. The hollow single-channel rotary joint according to claim 8, wherein outer sleeves are sleeved on the outer sides of the stator signal transmission lines (2-5) and the rotor signal transmission lines (1-3), and the two outer sleeves are fixedly mounted on the rotor flange and the stator flange respectively.

Technical Field

The invention relates to the technical field of signal transmission, in particular to a hollow single-channel rotary joint.

Background

At present, the volume of a rotary joint of a domestic universal frequency band is large, the performance index is poor, the fixed and rotary joint needs to rotate stably, and good electric connection between moving and fixed parts is guaranteed, so that signals can be transmitted stably; the existing assembly mode is very complicated, the size of a cavity is too long, the time and the path of signal transmission are increased, the cost is increased, the multi-channel rotary joint can not be lapped, the reliability of a product is low, the consistency of the product is difficult to guarantee, the production cost is improved, and unnecessary cost waste is caused.

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 hollow single-channel 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 hollow single-channel rotary joint comprises a rotor shell and a stator shell which are installed in a facing mode, a bearing is arranged in a space formed by the outer side of the rotor shell and the inner side of the stator shell, an insulating support plate is installed on the inner side cavity of the rotor shell through screws, a rotor center needle is installed on the other side of the insulating support plate through screws, and the rotor center needle is connected with a rotor signal transmission line arranged on the outer side of the rotor shell;

a stator hole is formed in one side, away from the rotor center pin, of the stator shell, a PEEK supporting sheet is fixedly installed in the stator hole, a stator center pin is fixedly installed on the PEEK supporting sheet, a special-shaped elastic sheet is fixedly connected to the inner side of the stator center pin, and the stator center pin is connected with a stator signal transmission line arranged on the outer side of the stator shell;

and a friction ring welded with the insulating support plate is arranged between the rotor center pin and the stator center pin, and one end of the special-shaped elastic sheet is in contact with the friction ring.

Further, a bearing sealing cover for fixing the bearing is installed on the outer sides of the rotor shell and the stator shell.

Further, a rotor cover is welded on the outer side of the rotor shell, and the rotor signal transmission line penetrates through the rotor cover.

Furthermore, a locking nut is arranged on one side, close to the stator shell, of the bearing.

Further, the outside of lock nut is equipped with the altitude mixture control ring, the altitude mixture control ring is installed stator shell with between the bearing.

Furthermore, the PEEK supporting sheet is composed of two semicircular structures, and the middle part of the PEEK supporting sheet is a square rotation stopping groove for fixing the center needle of the stator.

Furthermore, a rotor flange fixedly mounted on the rotor shell is arranged on the outer side of the rotor center needle, and a stator flange fixedly mounted on the stator shell is arranged on the outer side of the stator center needle.

Furthermore, outer guide sleeves are sleeved on the outer sides of the stator signal transmission line and the rotor signal transmission line, and the two outer guide sleeves are fixedly installed on the rotor flange and the stator flange respectively.

The invention has the beneficial effects that: the size of the cavity is reduced, the consistency of performance indexes is improved, and the time and the path of signal transmission are reduced; the lap joint combination of the rotary joints of the channels can be realized, and the consistency of each channel is ensured; due to the design of the special-shaped elastic sheet, the performance index is stabilized, and the long-life use of the joint is realized; miniaturization, consistency, reliability and stability of indexes of all channels in the multi-channel rotary joint, improvement of productivity, reduction of cost and the like, so that economic benefit maximization is achieved.

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 cross-sectional view of a hollow single pass rotary joint according to an embodiment of the present invention;

fig. 2 is an installation view of a center pin of a stator according to an embodiment of the present invention.

In the figure: 1. a rotor housing; 1-1, insulating support plates; 1-2, a rotor center needle; 1-3, rotor signal transmission line; 1-4, friction ring; 1-5, rotor cover sealing; 2. a stator housing; 2-1, stator holes; 2-2, PEEK support sheet; 2-3, a stator center needle; 2-4, a special-shaped elastic sheet; 2-5; a stator signal transmission line; 3. a bearing; 3-1, locking a nut; 4. a height adjustment ring.

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. 1-2, the hollow single-channel rotary joint according to the embodiment of the present invention includes a rotor housing 1 and a stator housing 2 installed in a facing manner, a bearing 3 is disposed in a space formed by an outer side of the rotor housing 1 and an inner side of the stator housing 2, an insulating support plate 1-1 is installed in an inner cavity of the rotor housing 1 through a screw, a rotor center pin 1-2 is installed on the other side of the insulating support plate 1-1 through a screw, and the rotor center pin 1-2 is connected to a rotor signal transmission line 1-3 disposed on an outer side of the rotor housing 1;

a stator hole 2-1 is formed in one side, away from the rotor center pin 1-2, of the stator shell 2, a PEEK supporting sheet 2-2 is fixedly installed in the stator hole 2-1, a stator center pin 2-3 is fixedly installed on the PEEK supporting sheet 2-2, a special-shaped elastic sheet 2-4 is fixedly connected to the inner side of the stator center pin 2-3, and the stator center pin 2-3 is connected with a stator signal transmission line 2-5 arranged on the outer side of the stator shell 2;

a friction ring 1-4 welded with the insulation supporting plate 1-1 is arranged between the rotor center needle 1-2 and the stator center needle 2-3, and one end of the special-shaped elastic sheet 2-4 is in contact with the friction ring 1-4.

In a specific embodiment of the present invention, a bearing cover 3-1 for fixing the bearing 3 is installed outside the rotor housing 1 and the stator housing 2.

Further, rotor covers 1-5 are welded on the outer side of the rotor shell 1, and the rotor signal transmission lines 1-3 penetrate through the rotor covers 1-5.

In a specific embodiment of the invention, a locking nut 3-1 is arranged on one side of the bearing 3 close to the stator housing 2.

In a specific embodiment of the present invention, a height adjusting ring 4 is provided at an outer side of the lock nut 3-1, and the height adjusting ring 4 is installed between the stator housing 2 and the bearing 3.

In a specific embodiment of the present invention, the PEEK supporting sheet 2-2 is formed of two semicircular pieces, and a square rotation stopping groove for fixing the center pin 2-3 of the stator is formed in the middle of the PEEK supporting sheet 2-2.

In a specific embodiment of the present invention, the rotor center needle 1-2 is provided with a rotor flange fixedly mounted on the rotor housing 1 at the outer side, and the stator center needle 2-3 is provided with a stator flange fixedly mounted on the stator housing 2 at the outer side.

In a specific embodiment of the present invention, outer guide sleeves are respectively sleeved on the outer sides of the stator signal transmission lines 2-5 and the rotor signal transmission lines 1-3, and the two outer guide sleeves are respectively and fixedly installed on the rotor flange and the stator flange.

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.

When in specific use, the single-channel rotary joint of the repeatedly lapped multi-channel rotary joint mainly comprises a rotor end and a stator end;

the rotor end is formed by welding and assembling an insulating support plate 1-1 and a friction ring 1-4, a rotor center needle 1-2 is fixed on the insulating support plate 1-1 through a screw, and the insulating support plate 1-1 assembled with the friction ring 1-4 and the rotor center needle 1-2 is locked in a cavity of a rotor shell 1 through a screw; welding a center needle of a rotor signal transmission line 1-3 in a needle hole of a rotor center needle 1-2, and fixedly mounting a rotor flange on a rotor shell 1 through a screw;

the outer conductor is welded on a rotor flange, the rotor cover 1-5 is fixed on the rotor shell 1, meanwhile, the rotor signal transmission line 1-3 penetrates through a middle hole arranged on the rotor cover 1 to be connected, two bearings 3 are respectively assembled on the outer shaft of the rotor shell 1 in sequence, and the bearings 3 are locked by using locking nuts 3-1 to assemble the rotor end of the rotary joint.

Two PEEK supporting sheets 2-2 are assembled with a stator center needle 2-3, the stator center needle 2-3 is just matched with a square rotation stopping groove, the PEEK supporting sheets 2-2 are adopted, the supporting strength of a non-metal structure is improved, a reliable stabilizing effect is achieved in the assembly with a center conductor, and a guarantee is provided for the performance stability of a product.

The assembled stator center pin 2-3 assembly is installed in a stator hole 2-1 of a stator shell 2, the stator hole 2-1 fixes a support sheet 2-2, and a special-shaped elastic sheet 2-4 is fixed on the stator center pin 2-3 by using a screw, so that the machining size and angle of the special-shaped elastic sheet 2-4 are adjusted, the elastic force is in a reasonable range during contact, high-reliability contact of a product during use is guaranteed, performance indexes are stabilized, the friction force during rotation is guaranteed, and the long-life use of a joint is realized. Meanwhile, the machining difficulty is solved, and the machining cost is reduced.

The center pin of the stator signal transmission line 2-5 is welded in the center hole of the stator center pin 2-3, the stator flange is fixed on the stator shell 2 through screws, the outer conductor is welded on the stator flange, the height adjusting ring 4 is installed on the stator shell 2, and the stator end of the rotary joint is assembled.

Finally, the rotor end and the stator end of the rotary joint are assembled together, and the stator end of the rotor end is fixed into a single-channel rotary joint by using the bearing sealing cover 3-1, so that the traditional cavity size is changed, the height size of the cavity is reduced to 6.9mm, the time and the path of signal transmission are reduced, and the height size of the joint is reduced, thereby reducing the insertion loss of the whole product, improving the consistency of performance indexes and saving the material cost; the size of the middle hole is enlarged to 3.7mm, a plurality of modules can be stacked, the lap joint combination of 12 channel rotary joints can be realized, the consistency of each channel is ensured, the assembly time is saved, and the production efficiency is improved; the rotor shell 1 and the stator shell 2 adopt a flexible driving mode, so that abnormal joint rotation caused by non-concentric rotation of the modular joint during rotation is solved, the bearing is not stressed during rotation, the smoothness during rotation is improved, and the service life of the joint is prolonged; the problem that the central conductor falls off when the product is used is also avoided, and the reliability of the product is improved.

The radio frequency signal is input by a stator signal transmission line 2-5, transmitted by a stator center pin 2-3, a special-shaped elastic sheet 2-4, a friction ring 1-4 and a rotor center pin 1-2, and finally output by a rotor signal transmission line 1-3.

In conclusion, by means of the technical scheme, the size of the cavity is reduced, the consistency of performance indexes is improved, and the time and the path of signal transmission are reduced; the lap joint combination of the rotary joints of the channels can be realized, and the consistency of each channel is ensured; due to the design of the special-shaped elastic sheet, the performance index is stabilized, and the long-life use of the joint is realized; miniaturization, consistency, reliability and stability of indexes of all channels in the multi-channel rotary joint, improvement of productivity, reduction of cost and the like, so that economic benefit maximization is achieved.

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.