An online monitoring device and method for static and dynamic deformation of shaft parts

Abstract

The invention discloses an online monitoring device and method for static and dynamic deformation quantities of a shaft part. The device comprises a base (1), a servo motor (2), a coupling (3), a speed sensor (4), the monitored shaft part (5), a tail end movable support (6), a limiting guide plate (7), a laser ranging sensor array (8), a lead screw (9), a stepping motor (10), a sliding block (11),a sliding platform (12), a sliding guide rail (13) and the like. The device can be used for measuring two kinds of deformation: 1, in a dynamic state, namely, when the servo motor drives the monitored shaft part to rotate at a high speed, the device is used for measuring the deformation generated under the action of a dynamic unbalanced load at the cross section of the monitored shaft part; and 2, in a static state, a distance and an angle between any cross section and the original axis of the monitored shaft part are measured. The practicability is high.

Description

technical field [0001] The invention relates to the technical field of on-line monitoring, in particular to an on-line monitoring device and method for static and dynamic deformation of shaft parts. Background technique [0002] With the development of the machinery industry towards more and more refined directions, how to accurately and quickly measure the static deformation of the mechanical components and the dynamic deformation in the operating state with the least impact on the mechanical components has become an important issue. important in engineering and practice. At present, there are mainly three measurement methods for the deformation of shaft parts: the first is the method of point-by-point measurement using measuring tools such as dial indicators; the second is the method of attaching strain gauges to the loaded components; The moving sensor is installed on the movable worktable, and its measuring head is guaranteed to be in the same plane perpendicular to the...

AI Technical Summary

Problems solved by technology

At present, there are mainly three measurement methods for the deformation of shaft parts: the first is the method of point-by-point measurement using measuring tools such as dial indicators; the second is the method of attaching strain gauges to the loaded components; The moving sensor is installed on the movable worktable, and its measuring head is guaranteed to be in the same plane perpendicular to the axis of rotation, and the angle between the measuring lines is an integer multiple of the resolution angle of the photoelectric encoder disc; these three methods are relatively cumbersome to operate , and is greatly affected by human factors, the degree of automation is low, and it is difficult to effectively cover the entire component under test

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