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a rotor core

A rotor iron core and iron core technology, applied in the field of rotor iron core, can solve problems such as coil winding short circuit, enameled wire insulation performance degradation, melting, etc., to reduce the impact of dynamic balance, ensure smooth and safe operation, and reduce vibration.

Active Publication Date: 2021-04-06
台州泰立电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to make up for the deficiencies of the existing technology, after the motor has been running for a long time in a high-temperature environment, when the temperature of the rotor core in the motor is too high, it is easy to melt the tung oil fixative on the coil winding, making the coil winding loose when the rotor core rotates , when the temperature of the rotor core continues to rise, the insulation performance of the enameled wire in the coil winding decreases, causing an internal short circuit in the coil winding, which seriously affects the normal operation of the motor. A rotor core proposed by the present invention

Method used

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Embodiment approach

[0024] As an embodiment of the present invention, the inner wall of the cooling hole 4 near the outer side of the iron core body 1 of the snap ring 8 is provided with a threaded hole 9, and the threaded hole 9 penetrates the iron core body 1 outward along the radial direction of the iron core body 1. ; The threaded hole 9 is threaded with a pin 10, and one end of the pin 10 away from the cooling hole 4 is provided with a hexagonal countersunk blind hole 11, and the end of the pin 10 extending into the cooling hole 4 is used to prevent the snap ring 8 from loosening; The hole 9 is fixed on the indexing plate after the two ends of the iron core body 1 are tightened by the clamp, and then the hole is drilled by a drilling machine, and finally tapped into the thread to make it. During the process, the punching piece will not be deformed and warped, further reducing the damage to the dynamic balance of the iron core body 1. Insert and rotate the pin 10 through the threaded hole 9, s...

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Abstract

The invention belongs to the technical field of motors, specifically a rotor core, including a core body, which is formed by superimposing a group of punched sheets; There is a shaft fixing hole in the center; a spiral cooling hole is opened on the iron core body between adjacent winding slots, and the cooling hole is used to reduce the temperature of the iron core body to ensure the normal operation of the rotor core; the iron core body of the present invention is in the When rotating continuously during work, the air continuously flows through the spiral cooling hole, taking away the heat from the coil winding in the winding groove, ensuring that the core body is within the normal temperature range, and preventing the core body temperature from being too high. The insulation layer of the enameled wire in the coil winding is damaged, causing a short circuit of the coil winding and causing a motor failure.

Description

technical field [0001] The invention belongs to the technical field of motors, in particular to a rotor iron core. Background technique [0002] Motor refers to an electromagnetic device that realizes the conversion or transmission of electric energy according to the law of electromagnetic induction. Its main function is to generate driving torque as a power source for electrical appliances or various machinery. Motors can be divided into DC motors, asynchronous motors, and synchronous motors according to their structure and working principle, and synchronous motors usually include permanent magnet synchronous motors, reluctance synchronous motors and magnetic tape synchronous motors. [0003] When the motor has been running in a high temperature environment for a long time, when the temperature of the rotor core in the motor is too high, it is easy to melt the tung oil fixative on the coil winding, making the coil winding loose when the rotor core rotates, and when the temp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K1/32H02K1/26
CPCH02K1/26H02K1/32
Inventor 不公告发明人
Owner 台州泰立电器有限公司