Thin type permanent magnetism synchronization gear wheel free traction machine

The utility model relates to a thin type permanent magnet synchronous gearless tractor, which is applied to the traction and the driving of an elevator without a machine room, and is composed of two parts of a permanent magnet motor and a braking system. The utility model is characterized in that the permanent magnet motor comprises a motor seat, a stator, magnet steel, a breaking wheel, a traction wheel, a coder seat, a bearing, a pressing cover, and a coder; the braking system comprises a braking arm, a braking shoe, a braking spring, a pulling rod, a spring seat, an electromagnetic brake and a pushing rod bolt. The utility model has the advantages that the thickness dimension is small, and the utility model is suitable for no machine room installation; two coders can be selected to be simultaneously operated, one is used for the normal velocity feedback, and the other is used for the velocity feedback of a rescue system, therefore, the operational safety performance of the elevator is effectively improved; the dimension at the width direction can be reduced, and simultaneously, the braking effect is improved.