Patent ID: 9027677
Filing Date: 2015-05-12
Classification: B60K,B60L,B62D,H02K,Y02T

Abstract:
1. A tracklaying gear for a self-propelled working machine, which includes an endlessly circulating track chain ( 7 ) which is driven by a crawler drive ( 18 ) that is arranged within the path of circulation of said track chain ( 7 ), wherein the crawler drive ( 18 ) includes at least one electric motor ( 20 ) with a motor housing ( 21 ) sealed in an air- and/or dust-tight manner and to said electric motor ( 20 ) a cooling device ( 24 ) with a closed fluid cooling circuit ( 23 ) is associated, wherein a transmission is connected to the electric motor, said transmission having an output shaft driving a tumbler which is in driving engagement with the track chain, wherein the electric motor and the transmission are positioned on opposite sides of said tumbler, wherein said tumbler is provided with a crank such the crawler drive including the electric motor and the transmission are arranged within the track chain width substantially without protrusion beyond the sides of the track chain.