Clamped chain cover for longwall plough guide
US6769742B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 1, 2002 |
| Grant date | Aug 3, 2004 |
| Priority date | — |
| Expiry date | Apr 5, 2022 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21C35/12
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A plough guide for underground mining ploughs, with angle plates (5), whose extended arm (8) is fastened on the working face side to the conveyor pan (3) of a chain scraper conveyor and whose base arm (7) towards the face, supported on the ground (6), forms a sliding track for the plough, with upper and lower chain channel slides (11, 12) for the plough chains separated by distance pieces (9) fastened preferably at a distance from each other on extended arms of the angle plates, with a cover (15) closing the chain channels (12, 11) to the working face side and which can be pivoted towards the face, having at least one abutment part (21), which can be fixed on the plough guide and released, and with a guide rail (18) arranged on the plough guide at a distance from the sliding plough track. The abutment part (21) of the cover (15) is clamped between the angle plate (5) and a securing part (30) at a distance from the cover (15) screwed onto the angle plate (5).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.