| 摘要 |
A motorized pulley system for conveyors or other industrial applications is provided which has a cylindrical pulley drum (18). The drum has a first end and a second end and end caps at the first end and second end. An outer casing or finish may be fixed to the pulley drum. A variety of seal member such as O-rings may be provided for sealing the outer casing, end caps, and interior of the drum against outside contamination. A mechanically fixed center through shaft assembly may be comprised of a series of mechanically joined, non-rotating elements including a gear end, an end cap (35) and a first stationary shaft (34), three gear pins, a motor end cap (44), a motor housing (65) and a drive end cap (48) and second stationary shaft (50) or alternative cycloidal gear components. The pair of stationary shafts further connect the drum to the conveyor belt. The drum contains a motor which has a motor core for generating rotary motion. The motor core has a series of NEO Rare Earth magnets or magnets (33) of a suitable material which are bonded and fixed to a motor center shaft. The motor core's rotating motion is contained by two radial bearings (42, 46), the bearings being press fit into the drive end cap and the motor. The motor core is rotated by the electrical field of the motor winding. The field is advanced in the motor winding by a Hall effect device (27) bonded to one face of the motor winding. A controller may be provided to regulate the speed and direction and allow constant speed control regardless of motor load. Leads (82) are provided for bringing power to the motor windings. They are passed through a hollow center of the drive end cap and stationary shaft. The leads terminate exterior to the open end of the stationary shaft and connected to the controller. A gear assembly may be provided to transmit rotational power to the drum, reduce the motor's speed and increase output torque. |
