CN107658833B

CN107658833B - Optimized wiring method for meeting rotation requirement of radio frequency cable outside cabin

Info

Publication number: CN107658833B
Application number: CN201710633058.3A
Authority: CN
Inventors: 张如变; 王涵; 杨杜; 袁荣刚; 郑京良
Original assignee: Shanghai Institute of Satellite Engineering
Current assignee: Shanghai Institute of Satellite Engineering
Priority date: 2017-07-28
Filing date: 2017-07-28
Publication date: 2020-08-18
Anticipated expiration: 2037-07-28
Also published as: CN107658833A

Abstract

The invention provides an optimized wiring method for meeting the rotation requirement of an extravehicular radio frequency cable, wherein the radio frequency cable comprises a deformation section, a movable section and a fixed section, the deformation section of the radio frequency cable is U-shaped before expansion, the deformation section of the radio frequency cable is arc-shaped after expansion, and the expansion angle of the cable is not more than 120 degrees. The high-frequency cable deforms flexibly and has small resisting moment in the rotating process. In the unfolding process, the radio frequency cable does not generate torsional deformation, and the loosening fault of a connector of the radio frequency cable is avoided. The high-frequency cable is flexible in deformation and small in resistance moment in the rotating process, and the reliability of the product in the rotating process is improved.

Description

Optimized wiring method for meeting rotation requirement of radio frequency cable outside cabin

Technical Field

The invention relates to a satellite-borne antenna extravehicular cable wiring method, in particular to an optimized wiring method capable of meeting the rotation requirement of extravehicular radio frequency cables.

Background

The satellite-borne unfolding antenna requires a matched radio frequency cable to participate in the unfolding process when the unfolding action is executed. Misrouting of rf cables can cause a number of unreliable factors. If the length of the cable is not set reasonably, the resistance moment of the cable is too large in the unfolding process, and the antenna can be unfolded unsuccessfully. Improper cable routing in the unfolding process can cause the cable to generate large torque, the head of the cable is loosened, the signal transmission quality is affected, and even the channel is interrupted.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide an optimized wiring method for meeting the rotating requirement of an extra-cabin radio frequency cable in order to solve the product failure risk caused by improper wiring of a satellite-borne on-orbit expansion antenna radio frequency cable. Meanwhile, the resistance moment caused by deformation in the cable unfolding process is reduced, and the reliability of the product in the rotating process is improved.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows:

an optimized wiring method meeting the rotation requirement of an extravehicular radio frequency cable is characterized in that the radio frequency cable comprises a deformation section, a movable section and a fixed section, the deformation section of the radio frequency cable is U-shaped before expansion, the deformation section of the radio frequency cable is arc-shaped after expansion, and the expansion angle of the cable is not more than 120 degrees. The high-frequency cable deforms flexibly and has small resisting moment in the rotating process.

Preferably, the movable section is fixed to the deployment rod by a rod upper bracket, the fixed section is fixed to the base by a root bracket, and the connector of the radio frequency cable is at the end of the root bracket.

Preferably, the deformed section and the movable section of the radio frequency cable are positioned in the same plane, and the fitting plane of the deformed section and the movable section is perpendicular to the rotation axis of the unfolding mechanism.

In the unfolding process, the radio frequency cable does not generate torsional deformation, and the loosening fault of the connector is avoided.

Preferably, the rotation axis is arranged outside a U-shaped area of the radio frequency cable deformation section, and the minimum radius of the U-shaped area of the radio frequency cable deformation section is not less than the minimum bending radius of the radio frequency cable.

Preferably, the first fixing point and the second fixing point of the movable section on the support on the rod are fixed by using strapping tapes, the cable fixing part is protected by winding rubber tapes, the third fixing point and the fourth fixing point of the fixed section on the root support are fixed by using strapping tapes, and the cable fixing part is protected by winding rubber tapes.

Compared with the prior art, the invention has the following beneficial effects:

the invention solves the product failure risk caused by improper wiring of the satellite-borne on-orbit expansion antenna radio frequency cable, adopts a design method of U-shaped wiring to eliminate the torsion of the radio frequency cable in the rotating process, and avoids the loosening of the radio frequency head caused by the torsion. Meanwhile, the resistance moment caused by deformation in the cable unfolding process is reduced, and the reliability of the product in the rotating process is improved.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a U-shaped RF cable of the present invention prior to deployment;

FIG. 2 is a view of the RF cable of the present invention shown in an expanded circular arc shape;

fig. 3 is a general configuration of the radio frequency cable of the present invention before deployment.

1-deformation section, 2-movable section, 3-fixed section, 4-root support, 5-upper support, 6-unfolding rod, 7-connector, 8-base, 9-unfolding mechanism, 10-rotation axis, 11-first fixed point, 12-second fixed point, 13-third fixed point and 14-fourth fixed point.

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.

As shown in fig. 1, in the U-shaped wiring method provided by the present invention, before being unfolded, the deformed section 1 of the rf cable is U-shaped. As shown in fig. 2, after being unfolded, the deformed section 1 of the rf cable is arc-shaped, and the unfolding angle is 110 degrees. The high-frequency cable deforms flexibly and has small resisting moment in the rotating process, the diameter of the radio-frequency cable is 5mm, and the measured spreading moment at normal temperature is not more than 0.12 Nm.

Fig. 3 shows that the deformed section 1 and the movable section 2 of the radio frequency cable are positioned in the same plane, and the fitting plane of the deformed section and the movable section is perpendicular to the rotation axis 10 of the unfolding mechanism 9. In the unfolding process, the radio frequency cable does not generate torsional deformation, and the loosening fault of the connector 7 is avoided. The rotation axis 10 is outside the U-shaped area of the radio frequency cable deformation section 1 by a distance of 12 mm. The radius of the U-shaped area of the radio frequency cable deformation section 1 is 50mm and is not less than the minimum bending radius of the radio frequency cable by 50 mm. And during the laying process of the cable, the high-frequency cable is prohibited from being twisted.

As shown in fig. 3, the movable section 2 is fixed to the deployment rod 6 by the rod upper bracket 5, and the fixed section 3 is fixed to the base 8 by the root bracket 4. The connector 7 of the radio frequency cable is at the end of the root cradle 4. The first fixing point 11 and the second fixing point 12 of the movable section 2 on the pole upper bracket 5 are fixed by using strapping tapes, and the fixed part of the cable is wound and protected by using rubber tapes. The fixing section 3 is fixed by a strapping tape at a third fixing point 13 and a fourth fixing point 14 of the root support 4, and the cable fixing part is protected by rubber tape winding. Each point was fixed 2 times.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims

1. An optimized wiring method meeting the rotation requirement of an extra-cabin radio frequency cable is characterized in that the radio frequency cable comprises a deformation section, a movable section and a fixed section, the deformation section of the radio frequency cable is U-shaped before being unfolded, the deformation section of the radio frequency cable is arc-shaped after being unfolded, and the unfolding angle of the cable is not more than 120 degrees;

the movable section is fixed on the unfolding rod through an upper rod support, the fixed section is fixed on the base through a root support, and a connector of the radio frequency cable is arranged at the tail end of the root support;

the deformation section and the movable section are positioned in the same plane, and the fitting plane of the deformation section and the movable section is vertical to the rotating axis of the unfolding mechanism;

the rotation axis is arranged on the outer side of the U-shaped area of the radio frequency cable deformation section, and the minimum radius of the U-shaped area of the radio frequency cable deformation section is not smaller than the minimum bending radius of the radio frequency cable.

2. The optimized routing method for meeting the rotation requirement of the radio-frequency cable outside the cabin according to claim 1, wherein the first fixing point and the second fixing point of the movable section on the support on the rod are fixed by using a strapping tape, and the third fixing point and the fourth fixing point of the fixed section on the root support are fixed by using a strapping tape.

3. The optimized wiring method for meeting the rotation requirement of the radio-frequency cable outside the cabin according to claim 2, wherein the cable fixing part is protected by winding a rubber belt.

4. The optimized wiring method meeting the rotation requirement of the extravehicular radio-frequency cable according to claim 1, wherein the radio-frequency cable is not twisted and deformed in the unfolding process, so that the connector is prevented from loosening.