DISPOSITIVO PER IL COMANDO DI UNA TRASMISSIONE IDROSTATICA SU UNAMACCHINA PER MOVIMENTO TERRA

摘要

A shifting mechanism for the hydrostatic transmission of an earth moving machine comprising a shift lever manually operable by the machine operator to effect the speed and direction of movement of the vehicle. The shift lever is coupled to a hydraulically-actuated friction stop mechanism for maintaining the shift lever in a predetermined position by means of a fluid coupling which may be readily disconnected by the vehicle operator to adjust the positioning of the shift lever free from any frictional forces holding the shift lever in the prior position. A release system is provided wherein upon application of the vehicle brakes, the frictional force holding the shift lever in the predetermined position is released and the shift lever automatically returned to a neutral or idle position thereby disengaging the vehicle transmission.