Heavy-loaded precise centering adjustment device for thick pinhole collimator

Abstract

The invention discloses a heavy-loaded precise centering adjustment device for a thick pinhole collimator. The heavy-loaded precise centering adjustment device is characterized in that a front-end support of the thick pinhole collimator is formed after a Y-axis adjustment mechanism I, a Z-axis adjustment mechanism I and a planar spherical hinge mechanism are combined; a tail-end support of the thick pinhole collimator is formed after a Y-axis adjustment mechanism II, a Z-axis adjustment mechanism II and a tail pressing seat mechanism are combined; the front end of the thick pinhole collimatoris fixedly arranged in the center position of the planar spherical hinge mechanism, and the tail end of the thick pinhole collimator is connected with the tail pressing seat mechanism. According to the heavy-loaded precise centering adjustment device disclosed by the invention, the adjustment accuracy is increased through bevel gear combination, harmonic deceleration and driving hand wheel combination, and a self-locking function after adjustment is completed is realized; the tail pressing seat mechanism adopts a spherical support and an upper pressing block spring locking structure, so that drift of a light spot during a locking state can be avoided; determination on relative positions of a laser spot of a reference optic axis of the thick pinhole collimator and the center of a front collimating hole of an imaging plate can be realized, and the situation that the diameter of a field of view can be obtained by measuring the position of an arc-shaped edge in an image of the imaging plate can be realized.

Description

technical field [0001] The invention belongs to the technical field of machinery, and in particular relates to a heavy-duty precision centering adjustment device for a thick pinhole collimator. Background technique [0002] At present, the thick pinhole imaging technology has the advantages of intuitive and high accuracy in reflecting the image of the source region, and is widely used in the image diagnosis of neutron sources, γ and hard X-ray sources, involving nuclear explosions, pulse reactors, thermonuclear fusion, and nuclear medical imaging. and environmental nuclear radiation monitoring and other research fields, the thick pinhole collimator is the main part of thick pinhole photography, and the thick pinhole collimator adjustment mechanism is the key component to realize the correct positioning of the thick pinhole collimator in the space state. It is necessary to determine the center position of the field of view through the relative position of the laser spot of th...

AI Technical Summary

Problems solved by technology

In order to achieve the relative position of the axis translation of the thick pinhole and the front collimation hole of the imaging plate, it is necessary to carry out arbitrary alignment of the space state of the thick pinhole collimator. At present, such a heavy-duty precision alignment adjustment device has not been reported.

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