Magnet induction lantern ring used for measuring rate of rotating shaft of mechanical equipment

Abstract

The invention provides a magnet induction lantern ring used for measuring the rate of a rotating shaft of mechanical equipment. The magnet induction lantern ring is characterized by comprising a circular base and a plurality of neodymium iron boron magnet units, wherein the plurality of neodymium iron boron magnet units are uniformly embedded into the base along the circumference. According to the magnet induction lantern ring used for measuring the rate of a rotating shaft of mechanical equipment, the structure in which the neodymium iron boron magnet units are embedded into the circular base is used as the induction object of a magneto-electric speed sensor, and the base has a round and smooth outer wall different from the sharp edge of a fluted disc wheel and does not generate severe vibration or pose a threat to surrounding equipment when rotating with a rotating shaft at high speed, so that the data acquisition sensitivity and accuracy of the magneto-electric speed sensor are greatly improved. In addition, the magnet induction lantern ring used for measuring the rate of a rotating shaft of mechanical equipment has a simple and ingenious structure and small size, is easy to process, and is applicable to early and later mechanical equipment assembly.

Description

technical field [0001] The invention relates to the technical field of rotating shaft speed measurement, in particular to a magnetic steel induction collar used for measuring the speed of a rotating shaft of mechanical equipment. Background technique [0002] In order to measure the rotation rate of the rotating shaft, a magnetoelectric speed sensor is generally installed on the measured shaft of the mechanical equipment. The magnetoelectric speed sensor is mainly composed of permanent magnet steel, iron core, induction coil, etc. It is based on the magnetic circuit. It works on the principle that a change in reluctance causes a change in magnetic flux, thereby generating an induced potential in the coil. The toothed wheel (an iron toothed wheel with multiple teeth or missing teeth) is installed on the measured shaft. The induction coil of the magnetoelectric speed sensor is kept at a distance from the toothed wheel and is relatively stationary. When the measured When t...

AI Technical Summary

Problems solved by technology

Although the toothed wheel can be used as the sensing object of the magnetoelectric speed sensor, the toothed wheel is only suitable for low-to-medium speed equipment, because when the speed to be tested is high, the rotating toothed wheel is like a chainsaw. There are serious safety hazards, and the high-speed rotating gear wheel will produce strong vibration and serious deformation, resulting in a large error in the data collected by the sensor, which affects the accuracy of the final data

In addition, the size of the chainring wheel is large, and the installation is also limited by the space and the position of the rotating shaft

Images