Traction unit of target support rotary table with two supporting mechanisms and one suspension mechanism

Abstract

The invention discloses a traction unit of a target support rotary table with two supporting mechanisms and one suspension mechanism. The traction unit is mainly composed of three parts, namely a linear traction mechanism, a tensioning direction-changing mechanism and a low-scattering suspension mechanism. The linear traction mechanism is driven by a servo motor, subjected to transmission conducted through ball screws and guided through linear guide rails. By means of the tensioning direction-changing mechanism, horizontal movement of a traction rope can be converted into vertical movement, and it can be guaranteed that the direction of the traction rope remains unchanged in the ascending and descending processes. By means of the low-scattering suspension mechanism, the traction rope can be connected with a to-be-measured target, and by means of the suspension mechanism, two-dimensional rotation movement, namely rotation movement conducted in the vertical direction and pitching movement conducted in the horizontal direction, can be achieved. The suspension mechanism is compact in structure; and electromagnetic wave reflection conducted by the suspension mechanism can be blocked through a low-scattering trimming cover, so that the whole suspension mechanism is low in RCS, and influence on RCS measurement conducted on the to-be-measured target is small.

Description

technical field [0001] The invention relates to a pulling unit for a two-pieces-one-hanging target support turntable, which can realize the pulling and hanging function of the two-pieces-one-hanging target support turntable when the RCS measurement of the target is performed on an indoor test site such as a compact field, and belongs to mechanical engineering and microwave engineering. Background technique [0002] The target support device is an important support device for RCS measurement of the target using compact field and outdoor remote test sites. The characteristics of the target support device, such as the motion dimension, motion accuracy, support reliability and its own RCS, are the key factors affecting the measurement accuracy and efficiency. Currently commonly used target support methods mainly include foam brackets (combined with one-dimensional precision turntables) and low-scattering metal brackets. Foam brackets are generally made of wave-transparent mate...

AI Technical Summary

Problems solved by technology

Traditional lifting devices (such as winches) have poor motion and positioning accuracy. During the lifting process, the position of the pulling rope is constantly changing as it is wound on the drum. It cannot be guaranteed that the lifting rope will always coincide with the rotation axis of the turntable. Misalignment of the rotating shafts of the turntable will cause the conical motion of the sling when measuring the RCS of the target in the rotating state, seriously affecting the motion accuracy and stability of the target to be measured

Commonly used hook connection devices have shortcomings such as scattered structure layout, single function, large torsional moment, and large RCS, which cannot be used for hanging the target to be measured during RCS measurement

In order to solve these problems, two pulling units with one lifting target supporting the turntable were invented, which successfully solved the poor movement and positioning accuracy of the traditional lifting device. During the lifting process, the position of the lifting rope changes with its winding on the drum. Problems such as large torsional moment of the hook and its own RCS

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