Radar feed source adjusting device

Abstract

A radar feed source adjusting device relates to the field of radar antennas, in particular to installation and adjustment of a feed source. The function realization of the radar antenna requires that the phase center of the feed source needs to be located at the intersection point of the reflecting surface, and the axis of the feed source is coaxial with the axis of the reflecting surface. When the feed source is installed, the position of the feed source can be adjusted in the axis direction, and the axis direction of the feed source can be adjusted. The utility model discloses a radar feed source adjusting device. According to the technical scheme, four supporting rods on the edge of a reflecting surface are connected with a supporting connecting plate, and four single-rod ball hinge joints on the plate jointly fix a feed source. By independently adjusting the height of the single-rod ball joint, the rapid adjustment of the axial position and direction of the feed source is realized. The device has the advantages of being simple and convenient to operate, reliable in fixation, free of feed source damage and the like, and is suitable for the field of high-precision radar antennas.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of radar antenna, especially installation adjustment of feed source. BACKGROUND

[0002] In the radar antenna, the feed source is the core component of the parabolic antenna, and the phase center thereof needs to be accurately located at the focal point of the reflecting surface, and the feed source axis needs to be coaxial with the reflecting surface axis. The traditional adjustment method usually adopts gasket increase or decrease or lateral screw fastening, and the following problems exist:

[0003] 1. Low adjustment efficiency: the gasket adjustment needs to be repeatedly disassembled, which is time-consuming and laborious;

[0004] 2. Easy to damage the feed source: the lateral screw directly contacts the surface of the feed source, which may cause mechanical damage;

[0005] 3. Poor stability: after being fixed, it is easy to deviate due to vibration or temperature change.

[0006] Therefore, an adjustment device that is simple to operate, reliable to fix and does not damage the feed source is urgently needed. INVENTION CONTENTS

[0007] According to the problems existing in the prior art, the utility model provides a device for realizing rapid adjustment of the position and direction of the feed source by independently adjusting the height of the single-rod spherical hinge joint, which solves the problems of low efficiency and easy damage to the feed source of the traditional method.

[0008] The utility model adopts the following technical scheme:

[0009] A radar feed source adjustment device, comprising:

[0010] 1. A reflecting surface (1) with four support rods (2) fixed at equal distances on one end of the edge;

[0011] 2. A support connecting plate (3) connected to the other end of the four support rods (2) to form a central axis mounting point;

[0012] 3. Four single-rod spherical hinge joints (4) evenly arranged on the support connecting plate (3) to jointly support the feed source (5);

[0013] 4. The single-rod spherical hinge joint (4) is fixed at one end and can swing at a small angle at the other end; it is connected to the support connecting plate (3) through threads and is fixed with a nut (6) to prevent loosening.

[0014] Adjustment principle: the axial position and direction angle of the feed source (5) are changed by independently adjusting the extension height of the four single-rod spherical hinge joints (4).

[0015] The utility model has the advantages of:

[0016] 1. Easy to operate: only need to adjust the height of single rod ball hinge joint to realize multi-degree of freedom adjustment;

[0017] 2. Reliable fixation: threaded connection plus nut anti-loose, strong vibration resistance;

[0018] 3. Non-destructive installation: avoid lateral screw directly pressing the surface of the feed source;

[0019] 4. Stable structure: four-point support design ensures the positioning accuracy of the feed source. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structural schematic view of the utility model.

[0021] Figure 2 It is a working schematic view of the single rod ball hinge joint.

[0022] Reference signs: 1-reflective surface, 2-supporting rod, 3-supporting connecting plate, 4-single rod ball hinge joint, 5-feed source, 6-nut. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be clearly and completely described in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] 1. Assemble the supporting structure: fix the four supporting rods (2) at equal intervals at one end of the reflective surface (1) edge, and connect the supporting connecting plate (3) at the other end;

[0025] 2. Install the feed source: support the feed source (5) through the four single rod ball hinge joints (4), and preliminarily tighten the nuts (6);

[0026] 3. Fine adjustment:

[0027] Height adjustment: simultaneously screw the four single rod ball hinge joints (4), so that the phase center of the feed source is aligned with the focal point of the reflective surface;

[0028] Direction adjustment: differentially adjust the height of the single rod ball hinge joint, and correct the coaxiality of the feed source axis and the reflective surface axis;

[0029] 4. Locking: after adjustment, tighten all the nuts (6) to prevent loosening.

[0030] Embodiment: after the parabolic radar antenna uses the device, the feed source adjustment time is shortened from the original 30 minutes to 5 minutes, and no deviation occurs after vibration test.

Claims

1. A radar feed adjustment device, characterized by: The edge of the reflecting surface (1) is fixed with four support rods (2) at equal distances, the other ends of the four support rods (2) are connected to the support connecting plate (3), the support connecting plate (3) is uniformly provided with four single-rod spherical hinge joints (4), and the four single-rod spherical hinge joints (4) jointly support and fix the feed source (5).

2. A radar feed adjustment device according to claim 1, characterized in that: After one end of the single-rod spherical hinge joint (4) is fixed, the other end can swing in any direction by a small angle.

3. A radar feed adjustment device as claimed in claim 1, characterized in that: The single-rod spherical hinge joint (4) is connected with the support connecting plate (3) through threads, and is fixed by preventing loosening with a nut (6).

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