Radar antenna subreflector three-direction adjusting structure

Abstract

The utility model discloses a three-direction adjusting structure for an auxiliary reflecting surface of a radar antenna, which belongs to the technical field of radar antennas and consists of an antenna main reflecting surface, a support rod, a feed source sleeve, an auxiliary reflecting surface, an upper auxiliary surface fixing rod, a lower auxiliary surface fixing rod and a tool. The feed source sleeve is fixed with the center of the antenna main reflecting surface through the positioning hole; the upper auxiliary face fixing rod and the lower auxiliary face fixing rod are connected through a kidney-shaped hole to form an adjustable transition structure, then the tool sequentially penetrates through center positioning holes of the upper auxiliary face fixing rod and the lower auxiliary face fixing rod to be fixed, the upper auxiliary face fixing rod is inserted into the supporting rod, and then the tool sequentially penetrates through and is inserted into a center hole of the feed source sleeve to be positioned. After the upper auxiliary surface fixing rod and the supporting rod are fixed, the tool is taken out, and the auxiliary reflecting surface and the lower auxiliary surface fixing rod are connected and fixed. According to the utility model, through the three-direction adjustable positioning structure, the problems of low installation precision and complex process of the auxiliary reflecting surface in the prior art are effectively solved, and the assembly precision and the installation efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to radar antenna technical field, concretely relates to a radar antenna vice reflecting surface three -dimensional adjustment structure. BACKGROUND

[0002] The main role of the radar antenna vice reflecting surface is to optimize the distribution of electromagnetic waves and improve the gain and efficiency of the antenna. The traditional vice reflecting surface mounting mode usually adopts a rigid connection structure, which only supports adjustment in a single direction (such as the up-down direction), and adjustment in the horizontal direction (front-back and left-right) relies on manual repeated debugging. The disadvantages are as follows: low assembly precision, lack of multidirectional fine adjustment mechanism, and influence on radar detection distance and signal quality. Low debugging efficiency, horizontal direction adjustment relies on empirical adjustment, and multiple disassembly and testing are required. Serious assembly error accumulation, installation errors of the main reflecting surface, support structure and vice reflecting surface are superimposed, and the overall performance is reduced. SUMMARY

[0003] In view of the problems in the prior art, the utility model provides a radar antenna vice reflecting surface three -dimensional adjustment structure. The fixing structure simplifies the mounting steps of the antenna vice reflecting surface, improves the assembly precision and debugging efficiency.

[0004] The utility model adopts the following technical scheme:

[0005] A radar antenna vice reflecting surface three -dimensional adjustment structure, antenna main reflecting surface, support rod, feed source sleeve, vice reflecting surface, upper vice surface fixed rod, lower vice surface fixed rod, tooling.

[0006] The positioning hole of the antenna main reflecting surface is at the center position, the feed source sleeve is fixed with the antenna main reflecting surface center, the upper vice surface fixed rod is fixed with the lower vice surface fixed rod, the upper vice surface fixed rod is fixed with the support rod, the tooling passes through the upper vice surface fixed rod and the lower vice surface fixed rod in turn, is inserted into the feed source sleeve, the upper vice surface fixed rod is connected and fixed with the support rod, the support rod is pulled out, finally the vice reflecting surface is connected and fixed with the lower vice surface fixed rod. The tooling passes through the upper vice surface fixed rod and the lower vice surface fixed rod and is inserted into the feed source sleeve to ensure that it is concentric, then the vice reflecting surface is connected and fixed with the lower vice surface fixed rod, and all installation references are uniformly designed on the antenna main reflecting surface center and the tooling. By ensuring the machining precision of the antenna main reflecting surface center hole and the tooling, the assembly precision of the vice reflecting surface is ensured.

[0007] As a preferred scheme: the mounting hole of the upper vice surface fixed rod and the lower vice surface fixed rod is a ±5mm waist-shaped hole, the waist-shaped hole long axis direction is perpendicular to each other, and the mounting surface is marked with millimeter-level adjustment reference scale lines.

[0008] The utility model has the advantages of:

[0009] A three-way adjustable structure for a radar antenna sub-reflector is disclosed. The lower sub-reflector fixing rod and support rod are adjustable vertically. The mounting holes on the upper and lower sub-reflector fixing rods are oblong, allowing the sub-reflector to be adjusted horizontally and backwards. Millimeter-level adjustment reference lines are engraved on the mounting surface. This adjustment structure is simple, simplifying the assembly steps of the radar antenna sub-reflector and improving assembly accuracy and efficiency. Attached Figure Description

[0010] Figure 1 This is a cross-sectional view of the structure of this utility model.

[0011] Figure 2 This is a magnified view of point A.

[0012] Figure 3 This is a schematic diagram of the installation of the three-way adjustment structure of the sub-reflector surface of this utility model.

[0013] Figure 4 This is a magnified view of point B.

[0014] Reference numerals: 1-Main reflector, 101-Support rod, 2-Tooling, 3-Upper secondary surface fixing rod, 4-Lower secondary surface fixing rod, 5-Secondary reflector, 6-Feed sleeve. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0016] like Figure 1 As shown, the feed sleeve 6 is fixed after being inserted into the center hole of the main reflector 1 through the positioning step. The upper sub-face fixing rod 3 and the lower sub-face fixing rod 4 are connected and fixed after being positioned by the insertion fixture 2. After the upper sub-face fixing rod 3 is inserted into the support rod 101, the fixture 2 passes through and is inserted into the center hole of the feed sleeve 6 from top to bottom for positioning. Then the upper sub-face fixing rod 3 is fixed to the support rod 101. The fixture 2 is pulled out and the sub-reflector 5 is connected and fixed to the lower sub-face fixing rod 4.

[0017] like Figure 3 As shown, tooling 2 is a positioning tooling. It can only be installed after positioning and pulling it out.

[0018] like Figure 1As shown, relative to the conventional feed sleeve 6 and main reflector 1 is connected fixed, the sub-reflector 5 is connected fixed by transition piece and support rod 101, can only be adjusted up and down and cannot guarantee its positioning accuracy, the utility model discloses simple structure passes through and guarantees concentricity by inserting tool 2, and the waist-shaped hole is opened to the upper sub-surface fixed rod 3 and lower sub-surface fixed rod 4 on transition piece, and the installation surface is engraved with adjustment reference scale line, only needs to adjust the installation position of upper sub-surface fixed rod 3 and lower sub-surface fixed rod 4 on transition piece, can realize accurate adjustment in three directions of up and down, front and back, left and right, simplifies assembly step and the accumulation of error.

Claims

1. A three-way adjustable structure for a radar antenna sub-reflector, comprising an antenna main reflector (1), a support rod (101), a tooling (2), an upper sub-reflector fixing rod (3), a lower sub-reflector fixing rod (4), a sub-reflector (5), and a feed sleeve (6), characterized in that: The feed sleeve (6) is connected and fixed to the antenna main reflector (1). The upper sub-face fixing rod (3) and the lower sub-face fixing rod (4) are connected and fixed through the tooling (2). The upper sub-face fixing rod (3) is inserted into the support rod (101). The tooling (2) is then passed through the upper sub-face fixing rod (3) and the lower sub-face fixing rod (4) from top to bottom, and finally inserted into the feed sleeve (6). The upper sub-face fixing rod (3) is connected and fixed to the support rod (101). After the tooling (2) is pulled out, the sub-reflector (5) is connected and fixed to the lower sub-face fixing rod (4).

2. The three-way adjustable structure for the sub-reflector of a radar antenna according to claim 1, characterized in that... The upper sub-face fixing rod (3) and the support rod (101) can be adjusted up and down. The long axis of the waist-shaped hole of the upper sub-face fixing rod (3) and the lower sub-face fixing rod (4) are perpendicular to each other, so as to realize the adjustment in the front-back direction and the left-right direction respectively. The mounting surfaces of the upper sub-face fixing rod (3) and the lower sub-face fixing rod (4) are engraved with millimeter-level precision adjustment reference scale lines.

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