Patent ID: 7055913
Filing Date: 2006-06-06
Classification: E21C

Abstract:
1. Chain guide arrangement for a mining machine, in particular a plough chain guide arrangement for an extraction plough, said chain guide arrangement comprising a first chain passage for a load strand and a second chain passage for a return strand of a drive chain of said mining machine, at the end areas of which there are provided at least one drive station and/or one return station for said drive chain, said drive station and/or return station comprising drive or guide sprocket wheels, respectively, for said drive chain, whereat at least at one of said chain passages a chain guide for said load strand and/or for said return strand of the drive chain is provided in a transition area to said drive station/s and/or said return station, wherein said chain guide comprises a retaining pocket being open towards said drive chain and at an end face thereof being bounded by a hinge pin arranged to be transverse to a direction of movement of said chain, said chain guide further comprising a hold-down device comprising a pin seating on at least its one end face, said pin seating matching with said hinge pin and is open on one side, and a locking arrangement, said hold-down device comprising a pressure face adjoining against said drive chain when said hold-down device is in a state in which it is retained in said retaining pocket and locked.