CONVEYOR FOR TUNNELLING MACHINES

摘要

1. Conveyor for tunnelling machines, comprising a conveyor trough having a bootom (12) and side walls (13) and having driver elements (10) being guided therein and being interconnected and moved by at least one endless chain (11) arranged approximately centrally in the conveyor trough and guided by a non-driven return spider and a drive spider wheel at the rear end of the conveyor trough, the rear section (3) of the conveyor trough being connected by a vertical pivot pin (2) to the stationary front section (1) thereof for horizontal swinging movement relative thereto, and an actuator (7) carrying the axle (4) of the drive spider wheel being arranged in the pivotable section (3) of the conveyor which is displaceable in the direction of the conveyor trough during swinging movement thereof for retaining the tension of the chain (11) in accordance with any change of chain path length, characterized in that both ends of a control element (17) at a distance from the privot pin (2) each are hinged at the stationary section (1) and at the pivotable section (3), resp., of the conveyor trough such that the control element (17) responds to any change of the distance between its hinge points and in dependence thereon controls the actuator (7).