A GEAR SHIFTING DEVICE FOR A RANGE GEAR IN A GEARBOX

摘要

The present invention relates to a gear shifting device (24) for a range gear (22) in a gearbox (2). The range gear comprises a planetary gear (22) arranged between a main shaft (11) and an output shaft (23) in the gearbox (2). The gear shifting device (24) comprises a shift sleeve (31) rotationally fixedly connected to the main shaft (11) and an actuator (26) configured to move the shift sleeve (31) in an axial direction in relation to the main shaft (11) to a low range position in which the planetary gear provides a low gear ratio between the main shaft (11) and the output shaft (23) and a high range position in which the planetary gear (22) provides a high gear ratio between the main shaft (11) and the output shaft (23). The gearbox (2) comprises a stationary contact surface (36) and that the shift sleeve (31) comprises a contact surface (35). The actuator (26) is also able to move the shift sleeve (31) in an axial direction in relation to the main shaft (11) to a third position at which said contact surfaces (35, 36) come in contact with each other.