Patent Number: 6,168,542

Title: Crowd rope take-up system for mining shovel

Abstract: A crowd rope take-up mechanism is mounted on the end of a shovel handle remote from the dipper bracket. The mechanism includes a cylinder with external screw threads engaged by a nut wheel. The cylinder mounts a sheave that received a loop of the crowd rope. A worm gear engages gear teeth on the outside of the nut wheel. The cylinder is restrained against rotation and the nut wheel is captured longitudinally so that rotation of the worm gear by a power wrench is translated into longitudinal movement of the cylinder and sheave. The worm gear is locked against rotation by a removable plug.

Inventors: Chang; Shyue-Sheng (Muskego, WI)

Assignee: Bucyrus International, Inc.

International Classification: E02F 3/28 (20060101); E02F 3/30 (20060101); E02F 3/42 (20060101); F16H 7/08 (20060101); F16H 007/12 ()

Expiration Date: 01/02/2018