Abstract: The present invention relates generally to the field of positioning mechanical equipment, and particularly to the likes of mechanical excavation and electric mining shovels. In one embodiment, there is disclosed a system for calibrating the sensors that measure hoist and crowd motions for an electric mining shovel, enabling the position of a bucket to be known with greater accuracy than can be achieved using previously known approaches.
Type:
Grant
Filed:
March 31, 2009
Date of Patent:
August 20, 2013
Assignee:
CMTE Developement Limited
Inventors:
Peter Ross McAree, Anthony Walton Reid, Kevin John Austin, Paul Martin Siegrist
Abstract: In particular embodiments of the technology, the bulk density of the payload in the bucket of a large electric dragline is measured during the carry phase of dragline operation by scanning the loaded bucket using a boom mounted scanner to provide data relating to the volume of the loaded bucket. Suitable methods can further include calculating the volume enclosed by the surface of the payload and the known base and sides of the bucket to give payload volume, and dividing the payload volume into payload weight data derived from rope length and motor current data to give the payload bulk density. Methods of screening data points originating from surfaces other than the bucket and payload, and methods of dealing with bucket ope and sway are also described and claimed.
Type:
Application
Filed:
October 25, 2011
Publication date:
May 31, 2012
Applicant:
CMTE Developement Limited
Inventors:
Benjamin Upcroft, Rajiv Chandra Shekhar, Alex Joseph Bewley, Paul J.A. Lever
Abstract: The present invention relates generally to the field of positioning mechanical equipment, and particularly to the likes of mechanical excavation and electric mining shovels. In one embodiment, there is disclosed a system for calibrating the sensors that measure hoist and crowd motions for an electric mining shovel, enabling the position of a bucket to be known with greater accuracy than can be achieved using previously known approaches.
Type:
Application
Filed:
March 31, 2009
Publication date:
February 3, 2011
Applicant:
CMTE Developement limited
Inventors:
Peter Ross McAree, Anthony Walton Reid, Kevin John Austin, Paul Martin Siegrist