Driver and automatic pallet changer having the same

摘要

The present invention provides a less expensive driver having a common electric motor for individually driving a fluid pressure pump and a transport mechanism. The inventive driver (1) comprises a hydraulic cylinder (8), a hydraulic pump (6) for supplying a working fluid to the hydraulic cylinder (8), and a transport mechanism (3) for driving a pivot arm (89) to pivot the pivot arm (89). The driver (1) further comprises a common electric motor (4) for driving the hydraulic pump (6) and the transport mechanism (3), and switching means (5) for connecting the electric motor (4) switchably to the hydraulic pump (6) and to the transport mechanism (3), wherein one of the hydraulic pump (6) and the transport mechanism (3) connected to the electric motor (4) is driven by the electric motor (4).