The present invention relates to a subway train truck having a direct drive traction motor. The direct drive traction motor comprises a stator fixed on a truck, and a rotator having a permanent magnet. The rotator of the direct drive traction motor comprises rotor cores formed in an annular sheet shape and sequentially fixed on each other. A magnet hole into which the permanent magnet is inserted is formed in the rotor cores along an outer circumferential surface of the rotor cores. After the permanent magnet is inserted into the magnet hole, a resin with a high thermal conductivity is filled in a gap between the magnet hole and the permanent magnet. Therefore, a ventilation structure of the rotator and mounting between the rotator and the permanent magnet can be optimized. The structure of the rotator and a structure of stable mounting between the rotator and the permanent magnet can prevent an accident and effectively cool the traction motor.

    본 발명은 대차에 고정되는 고정자, 영구자석을 포함하는 회전자를 포함하여 구성되는 전동차용 직결구동방식 견인전동기를 구비한 전동차용 대차에 관한 것이로, 상기 직결구동용 견인전동기의 회전자는 환 형상의 낱장의 로터코어가 차례로 맞붙여 고정 형성되고, 상기 로터코어에는 상기 영구자석이 끼워질 수 있는 자석공이 외주면을 따라 내부에 형성되고, 상기 영구자석이 상기 자석공에 삽입된 후 상기 자석공과 영구자석의 간극에 열전도율이 높은 합성수지(Resin)가 채워지는 것을 특징으로 한다. 따라서 회전자의 통풍구조 및 영구자석과의 결합 형태를 최적의 조건으로 구성하기 위한 적절한 방법이며, 상기한 바와 같이 회전자의 구조와 영구자석과의 안정된 결합 형태 구조는 안전사고 방지 및 견인전동기의 냉각 특성에서 매우 중요한 효과를 가져온다.


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    Title :

    A RAILWAY VEHICLES TURCK EQUIPPED WITH THE DIRECT DRIVE MOTOR


    Additional title:

    직결구동방식 견인전동기를 구비한 전동차용 대차


    Contributors:
    PARK HYUN JUNE (author) / KIM GIL DONG (author) / LEE HAN MIN (author) / LEE CHANG MU (author) / KIM BO KYONG (author) / PARK YOUNG (author) / CHO YONG HYEON (author)

    Publication date :

    2015-10-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES / B61C Lokomotiven , LOCOMOTIVES



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