Automatic chain tensioning device for mechanic chain conveyors

摘要

Automatic device for putting into tension the chains of mechanic chain conveyors, comprising at least one pusher (1) combined between at least one support (8) of one axis (9) of idle return of a chain (26) and a fixed shoulder (23), in which said pusher (1) comprises a movable stem (4) slidingly supported in a fixed cylinder (5), so as to define a pushing chamber (7) with variable volume. The pushing chamber (7) comprises devices fo bearing the pressure of a substantially incomprressible fluid container therein, that are connected to a switchboard (3) that operates a pumping central (2) if the pressure falls below a determined value.