Rotary joint of high-power short-wave rotary table

Abstract

The utility model discloses a rotary joint of a high-power short-wave rotary table, which comprises a rotary joint shell, the top of the rotary joint shell is connected with a joint through an insulating block, one end of the joint extending into the rotary joint shell is fixedly connected with the top end of a stator core, and the bottom end of the stator core is movably connected with the top end of a rotor core. The bottom end of the rotor core is connected with a flange connector, the side portion of the bottom end of the rotor core is connected with a rotor through a rotor polytetrafluoroethylene pad, and the outer end of the rotor is connected with the rotary joint shell through a bearing. According to the utility model, uninterrupted rotation of the radar rotary table is realized through cooperative use of the stator and the rotor, the rotary table is very suitable for rotation requirements of high-power continuous waves greater than or equal to 20KW in the short-wave field, and good electrical contact, flexible rotation, small standing waves, small insertion loss, ingenious structural process, easy batch production and low production cost of upstream and downstream equipment can be ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of shortwave communication, in particular to a rotary joint of a high-power shortwave turntable. Background Art

[0002] In the field of shortwave radar and broadcasting, the transmitter limits the transmission demand. In the past, the power of rotating joints was generally very small, not exceeding 1000W. However, now high-power transmitters have been developed, so a long-distance signal transmission system is needed. The particularity of such a system is that it requires high-power, continuous waves to be sent all the time, such as shortwave with a carrier power ≥ 20KW. However, if the voltage is too high and the signal transmission system works at full load for a long time, it will break down and spark if it is not careful, which can easily cause a fire. Therefore, high requirements are placed on the structure and electrical reliability of the high-power shortwave turntable. Utility Model Content

[0003] In view of the above technical problems in the related art, the utility model proposes a rotary joint of a high-power shortwave turntable, which can overcome the above shortcomings of the prior art.

[0004] In order to achieve the above technical purpose, the technical solution of the utility model is implemented as follows:

[0005] A rotary joint of a high-power short-wave turntable comprises a rotary joint housing, the top of the rotary joint housing is connected to a joint through an insulating block, one end of the joint extending into the interior of the rotary joint housing is fixedly connected to the top of a stator core, the bottom end of the stator core is movably connected to the top of a rotor core, the bottom end of the rotor core is connected to a flange connector, the side of the bottom end of the rotor core is connected to the rotor through a rotor polytetrafluoro pad, the outer end of the rotor is connected to the rotary joint housing through a bearing, the top of the rotor is also connected to the rotary joint housing through a steel ball and a bearing, and the bottom end of the rotor is fixedly connected to a flange.

[0006] Furthermore, the bottom end of the stator core is movably connected to the top end of the rotor core through a steel ball.

[0007] Furthermore, the stator core, the rotor core and the flange connector are all located inside the rotary joint housing.

[0008] Further, the flange connector is snap-fitted into the bottom end of the rotor core.

[0009] Furthermore, the bearing comprises a thrust ball bearing and a bearing cover, the bottom end of the thrust ball bearing is connected to the top end of the bearing cover via a spring, and the spring is located in a top groove of the bearing cover.

[0010] Furthermore, the bearing cover is fixedly connected to the rotating joint housing by means of three screws.

[0011] Furthermore, the bottom end of the rotor is fixedly connected to the flange via screw 1, and the flange connector is located in the cavity of the rotor.

[0012] Furthermore, the bottom end of the rotor is lower than the bottom ends of the bearing cover and the rotating joint housing.

[0013] The beneficial effects of the utility model are as follows: the utility model realizes the uninterrupted rotation of the radar turntable through the coordinated use of the stator and the rotor, is very suitable for the demand for high-power continuous wave rotation greater than or equal to 20KW in the shortwave field, can ensure good electrical contact of upstream and downstream equipment, flexible rotation, small standing wave, small insertion loss, ingenious structural process, easy mass production, and low production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a structural vertical cross-sectional view of a rotary joint of a high-power short-wave turntable according to an embodiment of the utility model;

[0016] In the figure: 1. Rotating joint housing; 2. Insulating block; 3. Stator core; 4. Rotor core; 5. Rotor; 6. Rotor polytetrafluoro pad; 7. Flange connector; 8. Bearing cover; 9. Flange; 10. Steel ball one; 11. Thrust ball bearing; 12. Screw one; 13. Screw three; 14. Joint; 15. Spring; 16. Steel ball two. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.

[0018] like Figure 1As shown, a rotary joint of a high-power short-wave turntable according to an embodiment of the utility model includes a rotary joint housing 1, the top of the rotary joint housing 1 is connected to the joint 14 through an insulating block 2, one end of the joint 14 extending into the interior of the rotary joint housing 1 is fixedly connected to the top of the stator core 3, the bottom end of the stator core 3 is movably connected to the top of the rotor core 4, the bottom end of the rotor core 4 is connected to the flange connector 7, the bottom side of the rotor core 4 is connected to the rotor 5 through a rotor polytetrafluoroethylene pad 6, the outer end of the rotor 5 is connected to the rotary joint housing 1 through a bearing, the top of the rotor 5 is also connected to the rotary joint housing 1 through a bearing through a steel ball 16, and the bottom end of the rotor 5 is fixedly connected to the flange 9.

[0019] The bottom end of the stator core 3 is movably connected to the top end of the rotor core 4 through a steel ball 10. The stator core 3, the rotor core 4 and the flange connector 7 are all located inside the rotary joint housing 1. The flange connector 7 is snapped into the bottom end of the rotor core 4.

[0020] The bearing includes a thrust ball bearing 11 and a bearing cover 8. The bottom end of the thrust ball bearing 11 is connected to the top end of the bearing cover 8 through a spring 15. The spring 15 is located in the top groove of the bearing cover 8. The bearing cover 8 is fixedly connected to the rotating joint housing 1 through screw three 13.

[0021] The bottom end of the rotor 5 is fixedly connected to the flange 9 via a screw 12 , and the flange connector 7 is located in the cavity of the rotor 5 .

[0022] The bottom end of the rotor 5 is lower than the bottom ends of the bearing cover 8 and the rotary joint housing 1 .

[0023] In order to facilitate understanding of the above technical solution of the present invention, the above technical solution of the present invention is described in detail below through specific usage.

[0024] During specific use, according to the rotating joint of a high-power shortwave turntable described in the utility model, in a high-power transmission state, the cable of the antenna is connected to the stator, and the cable of the device is connected to the rotor. Therefore, when the antenna rotates, whether it is forward or reverse, no matter how many turns it makes, the wire will not be tangled, and the antenna and the device can be ensured to be well connected.

[0025] To sum up, with the help of the above-mentioned technical solution of the utility model, the 20KW high-power continuous wave rotation demand applied to the short-wave field can ensure good electrical contact of upstream and downstream equipment, flexible rotation, small standing wave, small insertion loss, ingenious structure and process, easy mass production, and low production cost.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rotary joint of a high-power short-wave turntable, characterized in that: The invention comprises a rotating joint housing (1), the top of the rotating joint housing (1) is connected to a joint (14) via an insulating block (2), one end of the joint (14) extending into the interior of the rotating joint housing (1) is fixedly connected to the top of a stator core (3), the bottom end of the stator core (3) is movably connected to the top of a rotor core (4), the bottom end of the rotor core (4) is connected to a flange connector (7), the side of the bottom end of the rotor core (4) is connected to a rotor (5) via a rotor polytetrafluoroethylene pad (6), the outer end of the rotor (5) is connected to the rotating joint housing (1) via a bearing, the top of the rotor (5) is also connected to the rotating joint housing (1) via a steel ball (16) via a bearing, and the bottom end of the rotor (5) is fixedly connected to a flange (9).

2. The rotary joint of the high-power short-wave turntable according to claim 1 is characterized in that: The bottom end of the stator core (3) is movably connected to the top end of the rotor core (4) via a steel ball (10).

3. The rotary joint of the high-power short-wave turntable according to claim 1 is characterized in that: The stator core (3), the rotor core (4) and the flange connector (7) are all located inside the rotary joint housing (1).

4. The rotary joint of the high-power short-wave turntable according to claim 1 is characterized in that: The flange connector (7) is snap-fitted into the bottom end of the rotor core (4).

5. The rotary joint of the high-power short-wave turntable according to claim 1 is characterized in that: The bearing comprises a thrust ball bearing (11) and a bearing cover (8); the bottom end of the thrust ball bearing (11) is connected to the top end of the bearing cover (8) via a spring (15); the spring (15) is located in a top groove of the bearing cover (8).

6. The rotary joint of the high-power short-wave turntable according to claim 5 is characterized in that: The bearing cover (8) is fixedly connected to the rotary joint housing (1) via screw three (13).

7. The rotary joint of the high-power short-wave turntable according to claim 1 is characterized in that: The bottom end of the rotor (5) is fixedly connected to the flange (9) via a screw (12), and the flange connector (7) is located in the cavity of the rotor (5).

8. The rotary joint of the high-power short-wave turntable according to claim 6 is characterized in that: The bottom end of the rotor (5) is lower than the bottom ends of the bearing cover (8) and the rotary joint housing (1).

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