Patent ID: 7836982
Filing Date: 2010-11-23
Classification: B60K,B62D

Abstract:
1. A compact crawler type tractor comprising: a crawler frame supporting driven idlers so as to be rotatable at both ends thereof and a driving sprocket mounted on a rear axle, and being provided with a crawler type running unit in which a crawler is windingly mounted around said driven idlers and said driving sprocket, at the lower part of an upper body; a hydraulic speed change mechanism for steering a vehicle connected with a driving system; a backward-and-forward movement changeover mechanism for carrying the vehicle backward or forward; said hydraulic speed change mechanism including a hydrostatic transmission pump for turning and a hydrostatic transmission motor for turning, said hydrostatic transmission pump for turning and said hydrostatic transmission motor for turning located behind said backward-and-forward movement changeover mechanism; and said hydrostatic transmission pump for turning is a variable displacement pump, and an output of said hydrostatic transmission motor for turning is input into a differential mechanism, the hydrostatic pump and the hydrostatic transmission installed closely to one another and in the vicinity of the transmission.