Coded disc mounting and positioning device of photoelectric non-contact ship shaft power meter

Abstract

The invention relates to the technical field of mounting and positioning devices, in particular to a coded disc mounting and positioning device of a photoelectric non-contact ship shaft power meter. The device comprises a to-be-detected rotating shaft, photoelectric coded disc assemblies are respectively mounted at two ends of a shaft body of the to-be-detected rotating shaft through fixing and mounting accessories, a plane of each photoelectric coded disc assembly is perpendicular to an axis of the to-be-detected rotating shaft, circle centers of the photoelectric coded disc assemblies and the axis of the to-be-detected rotating shaft are coaxially arranged, photoelectric sensors are fixed to the photoelectric coded disc assemblies through fixing assemblies, and the photoelectric sensors are connected to fixed bases or fixed stands on a ship through connecting assemblies. According to the device, an eccentric error caused by the fact that the circle centers of the photoelectric coded disc assemblies do not coincide with the axis of the to-be-detected rotating shaft is eliminated, the problem of an offset error of tiny inclination of the photoelectric coded disc assemblies on the to-be-detected rotating shaft due to overlarge torque in a high-speed rotating process of the to-be-detected rotating shaft is avoided, therefore, the installation error problem of the whole shaft power meter is solved, and the measurement precision of the shaft power is improved.

Description

technical field [0001] The invention relates to the technical field of installation and positioning devices, in particular to a code disc installation and positioning device for a photoelectric non-contact ship shaft power meter. Background technique [0002] In the ship power system, shaft power is one of the main performance parameters for testing the system, and it can also be used as an information source for fault alarms. Measuring the shaft power through the ship shaft power meter can realize the real-time monitoring of the operating status of the main engine of the ship. By analyzing the test data, the cause of the failure can be quickly and accurately found, so as to realize the diagnosis of the system failure. At present, based on the research and development status of shaft power meters at home and abroad, the problem of affecting the measured data due to the installation error of the device itself has been paid more and more attention. The installation state of t...

AI Technical Summary

Problems solved by technology

The installation state of the photoelectric code disc on the measured rotating shaft will mainly cause two kinds of errors: one is the eccentricity error caused by the misalignment of the center of the photoelectric code disc and the axis of the measured rotating shaft; the other is the plane where the photoelectric code disc is located. Tilt error that is not perpendicular to the axis of the measured rotating shaft

During the installation process of the shaft power meter, the photoelectric code disk needs to be placed in the U-shaped groove of the photoelectric sensor, that is, between the laser emitting end and the laser receiving end. If the plane of the photoelectric code disk is not parallel to the inner surface of the U-shaped groove of the photoelectric sensor , will also cause a large error impact on the subsequent measurement results

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