Advancing longwall system for surface mining
US8672415B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 2011 |
| Grant date | Mar 18, 2014 |
| Priority date | — |
| Expiry date | Dec 29, 2031 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21C41/26
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A surface mining system for removing material from a mining face generally includes a conveyor extending substantially parallel to the mining face, a miner supported by and moveable along the conveyor, and a conveyor translation device associated with the conveyor and operable to move the conveyor and the miner toward the mining face. A method for advancing a surface mining longwall system generally includes moving the longwall shearer along a face conveyor, operating load translation devices to move the face conveyor and the longwall shearer toward the mining face, resetting a first group of load translation devices, and then resetting a second group of load translation devices. A load translation device generally includes an actuator, a ground drilling device coupled to and moveable with a portion of the actuator, and a frame coupled to and moveable with another portion of the actuator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.