Planetary gear train of automatic transmission for vehicles

A planetary gear train apparatus of an automatic transmission for a vehicle, comprising:

• an input shaft receiving an engine torque;
• an output shaft outputting a torque;
• a compound planetary gear set having first, second, third and fourth rotation elements by combination of a first planetary gear set and a second planetary gear set;
• a third planetary gear set having fifth, sixth, and seventh rotation elements;
• a fourth planetary gear set having eighth, ninth, and tenth rotation elements;
• a first shaft fixedly connected to the third rotation element and the sixth rotation element, and fixedly connected to the input shaft;
• a second shaft fixedly connected to the ninth rotation element, and fixedly connected to the output shaft;
• a third shaft fixedly connected to the first rotation element;
• a fourth shaft fixedly connected to the fourth rotation element;
• a fifth shaft fixedly connected to the fifth rotation element and the eighth rotation element;
• a sixth shaft fixedly connected to the seventh rotation element;
• and
• a plurality of shafts, each of which is selectively connectable to a transmission housing and fixedly connected to a rotation element of the compound planetary gear set and the fourth planetary gear set which is not fixedly connected to any of the first to six shafts.