Synchronized Motorized Lifting Devices for Lifting Shared Loads

摘要

A system includes multiple lifting devices, where each lifting device includes a drum to draw in or let out a line, and a motor and transmission coupled to the drum to apply a torque thereto. A grouping module is provided to group the lifting devices for synchronized operation. A synchronization module monitors an amount of line that is drawn in or let out from each of the lifting devices and, based on the amount, adjusts operating parameters (e.g., position, speed, etc.) of one or more of the lifting devices in the group to substantially synchronize the amount of line drawn in or let out with other lifting devices in the group.

主权项

1. A system comprising:
a plurality of lifting devices, each lifting device comprising a drum to draw in or let out a line, and a motor and transmission coupled to the drum to apply a torque thereto; a grouping module to group the plurality of lifting devices for synchronized operation in lifting a shared load; and a synchronization module to monitor operating parameters of the plurality of lifting devices in the group and, based on the operating parameters, adjust the operating parameters of at least one lifting device in the group to maintain synchronization between the motorized lifting devices.