SWING SYSTEM AND CONSTRUCTION MACHINERY OR VEHICLE COMPRISING A SWING SYSTEM

摘要

The present invention includes a swing brake 32a for blocking or unblocking the rotational motion of the first portion 202 of the vehicle 200 relative to the chassis portion 204 of the vehicle 200, To a swing system (100) for a construction machine (200) or a vehicle, particularly an excavator or crane, comprising a swing pump (10) and a swing motor (12) The swing pump 10 may be located in the neutral position when the first part 202 is not rotated. At least one brake control actuator 34, 42 is provided to automatically engage the swing brake 32a when the swing pump 10 is in its neutral position. The swing system 100 provides improved control of the swing motion on the slope and improved convenience during operation of the swing motion.