| 摘要 |
1. Apparatus for shifting a longwall conveyor situated parallel to the front of the longwall and moved towards the front as the cutting machine advances, starting from a conveyor pan situated a couple of pans away from the cutting machine, comprising hydraulic shifters fastened to the supporting units of the lining and controlled by a hydraulic distributor controlling a group of shifters at the same time and installed on a supporting unit other than the one it controls, characterised in that the distributor (4) controlling a given group (m) of shifters is installed on supporting units of the group (m-2) at a distance x>=kxl from the controlled group, where<IMAGE>is the number of conveyor (1) pans (2) between the cutting machine and the first shifted pan c in the group (m-1), (H) is the distance at which the conveyor (1) should be shifted, (α) is the maximum horizontal pans tip angle, and (l) is the pan length, and moreover the distributor (4) is connected by means of a hose (8) with a number (n) of shifters (7) determined...<IMAGE>
|
