Self-propelled tractor, for rail maintenance, uses tractor mounted on rail truck with axles carrying wheels with pneumatic tires and has mechanism to raise or lower axles so tractor can run on tires or on rail wheels

摘要

The tractor has a cabin (5), which can rotate through 180 deg , mounted on a motor unit (7) that has two driven axles carrying pneumatic-tired wheels (1). The motor unit is supported on a railway truck chassis (8). The axles with the pneumatic wheels can be displaced vertically relative to a railway truck chassis, allowing the tractor to run on the pneumatic wheels or the rail wheels (2).