Belted crawler having auxiliary drive

Details Belted crawler having auxiliary drive Belted crawler having auxiliary drive

B - Operations, Transporting

62

D

305/47

B62D 55/12 (2006.01) B60K 17/348 (2006.01) B60K 17/356 (2006.01) B62D 55/06 (2006.01)

Patent

CA 2008562

ABSTRACT OF THE DISCLOSURE The invention is directed to an auxiliary drive system for the front wheels of a belted track crawler. The auxiliary drive wheels and the main drive wheels are provided with overrunning clutches. In the first two embodiments a mechanical system is used to drive the auxiliary wheels. In the third embodiment electric motors are used to drive the auxiliary wheels. With all the systems when the crawler is being driven forward the auxiliary drive wheel is driven slower than the main drive wheel. In a no slip situation the auxiliary drive wheel freely rotates at the speed of the main drive wheel. When sufficient slippage occurs between the main drive wheel and the track, the auxiliary drive wheel is driven at the slower speed driving the track. In reverse, the auxiliary drive wheel is driven faster than the main drive wheel. In a no slip condition, the auxiliary drive wheel drives the crawler in reverse. When sufficient slippage occurs between the auxiliary drive wheel and the belted track, the main drive wheel again drives the crawler.

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