Control arrangement for adjusting the position of a mineral winning machine in a mineral mining installation
US5338103A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 15, 1993 |
| Grant date | Aug 16, 1994 |
| Priority date | — |
| Expiry date | Jan 15, 2013 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21C35/125
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A mineral mining installation has a plough guided for movement along a scraper-chain conveyor. Roof supports are connected to the conveyor with the aid of shifting mechanisms which employ boom-type guide linkages designed to co-operate with a compact controller to adjust the tilt of the conveyor and the cutting horizon of the plough. The controller employs a plate-like guide block guided for up and down motion at the goaf side of the conveyor. An hydraulic piston and cylinder unit is disposed alongside the goal side of the conveyor and pivots a cranked lever to raise or lower the guide block. The guide block is coupled to a headpiece of an associated one of the boom linkages so that the motion of the guide block is transferred to the headpiece.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.