Cable collecting and releasing mechanism of feed cabin of radio telescope

Abstract

The invention discloses a cable collecting and releasing mechanism of a feed cabin of a radio telescope, wherein the feed cabin is hung at the upper part of an antenna through a plurality of suspended cables, the suspended cables bypass the tops of a plurality of supporting towers and are connected with a cable rolling mechanism; the feed cabin is connected with a cable, and through the driving of the cable collecting and releasing mechanism, the cable can be collected and released while the suspended cables move in and out. The cable collecting and releasing mechanism comprises a plurality of detachable rope clips that can be connected with the suspended cables in a cohesion manner or in a disconnected manner, wherein the cable is fixed with the detachable rope clips; one end of a drawing steel wire rope is fixed with the detachable rope clip which is far from the final end of the feed cabin, and the other end thereof is connected with the feed cabin; the detachable rope clips are sequentially connected in series and fixed on the drawing steel wire rope; a cable storage device is arranged around the periphery of two opposite supporting towers, and the detachable rope clips can be stored in the cable storage device; and the supporting tower is provided with a detaching device. The cable collecting and releasing mechanism can effectively protect the cables in the moving process of the feed cabin, thereby prolonging the service life of the cables and improving the stability and convenient maintenance of the mechanism.

Description

technical field [0001] The invention relates to a feed cabin suspension device of a radio telescope, in particular to a cable retracting mechanism in the feed cabin suspension device, which is used to ensure that there cannot be any rigid connection between the reflective surface and the feed cabin Under certain conditions, cables for power support and signal exchange are provided for the movable feed cabin. Background technique [0002] Large-aperture radio telescopes are important equipment for astronomical observations. Taking a giant radio telescope as an example, an active reflective spherical crown with an aperture of 500m is laid, and an instantaneous paraboloid with an aperture of 300m is formed in the observation direction through active control. During astronomical observation, the feed cabin moves on a spherical crown with a height of about 140m above the reflecting surface and a diameter of 206m. The maximum tracking speed is 11.6mm / s, and the maximum speed for c...

AI Technical Summary

Problems solved by technology

Because this technical solution uses the suspension of wires as the wire reserve for the feed cabin within its range of motion, a large amount of shading is formed above the parabola, which affects the quality of observation. In addition, not only six suspension cables are used to suspend the feed cabin, but also a pull-down cable is required. ,complex structure

Because of the hanging setting, the cables and optical cables cannot be effectively protected, their service life is short, the reliability of the equipment is poor, and the maintenance is very inconvenient

[0004] The previously disclosed feed line connection device for the radio telescope antenna requires a special steel cable for hanging the cable, and the length of the cable needs to be changed according to the change of the cabin position when the cable enters the cabin from the suspension cable, which leads to complicated wire sliding agency (see the case figure 1 No. 14), thus increasing the extra weight of the suspension cable

In addition, the suspension cable of the entry section (see the case figure 1 The label 13) is easy to vibrate under the wind force, which affects the data and power transmission of the cable, and also interferes with the attitude adjustment of the feed cabin

Also, since the wire sliding devices are numerous and mostly hung on the cables away from the tower, the possibility of failure is high and maintenance is inconvenient

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