Earthing and turn-to-turn short circuit testing device of rotor of permanent magnetic starter motor and testing method thereof

Abstract

The invention discloses an earthing and turn-to-turn short circuit testing device of a rotor of a permanent magnetic starter motor. The device comprises an earthing tester, a turn-to-turn tester, a test bench, a test rack fixed on the test bench and a drive mechanism which drives a rotor of the permanent magnetic starter motor to rotate, wherein the test rack comprises two oppositely arranged support plates, and are respectively provided with a slot which is clamped on each end of the rotor of the permanent magnetic starter rotor; and in the drive mechanism, the end part of a stand column is hinged with one end of a test rod, and one end of a connecting rod is connected with a turn-to-turn box of the turn-to-turn tester which is lifted through a through hole along with rotation of the test rod. The testing device has the advantages that: 1, the turn-to-turn box leaves from the rotor in an earthing short circuit test, and an earthing test head leaves from the rotor in a turn-to-turn short circuit test, so that automatic switching of the two tests is realized; and 2, the earthing short-circuit test and turn-to-turn short circuit test can be automatically, safely and stably carried out on the rotor, so that the testing quality and the testing efficiency are improved.

Description

technical field [0001] The invention relates to the technical field of permanent magnet starters for automobiles, in particular to a ground-to-ground and inter-turn short-circuit test device and a test method for a permanent magnet starter rotor. Background technique [0002] With the development of society and the continuous progress of science and technology, the production, sales and social ownership of automobiles are getting higher and higher, and the demand for starter rotor subassemblies matched with automobile engines is also increasing. The rotor assembly is composed of iron core assembly, commutator, shaft and coil, and its function is to provide torque for the starter (DC motor). The automobile starter will generate a large current when it is working; if the starter rotor has a short circuit defect to the ground or between turns, it will cause a large instantaneous current and heat generation of the rotor, which will cause the starter rotor to be ablated; cause th...

AI Technical Summary

Problems solved by technology

This method cannot guarantee the quality of the test (the test time is unstable); the test rod is exposed, and the safety of the test cannot be guaranteed (the test voltage to the ground is 1000V); the test is labor-intensive and inefficient

[0006] The detection steps of the turn-to-turn tester: put the rotor on the test frame first, and then turn the rotor by hand to start the test; this method cannot guarantee the quality of the test (the speed of the rotor rotation is unstable, and it cannot guarantee whether the rotor rotates once); the test labor High Strength, Low Efficiency

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