Patent ID: 7850560
Filing Date: 2010-12-14
Classification: F16H

Abstract:
1. An eccentric tensioning device for a traction means drive, comprising: a track roller device, which comprises a running disk and a rolling bearing provided for supporting the disk, an operating eccentric for supporting the track roller device such that it can be displaced in a radial direction relative to a rotational axis of the rolling bearing according to a magnitude of pivoting of the operating eccentric, a torsion spring for pretensioning the operating eccentric in a pivoting direction, in which the operating eccentric forces the track roller device carried by the eccentric against an associated traction means, an adjustment eccentric for radial displacement of the operating eccentric, a fixing device for securing the operating eccentric in an initial position prior to installation of the tensioning device, in which the torsion spring is located in a pretensioned state between the operating eccentric and the adjustment eccentric to allow mounting of the eccentric tensioning device as a pre-tensioned unit, the fixing device is constructed as a shearing structure, and shearing off of the shearing structure is implemented through pivoting of the operating eccentric relative to the adjustment eccentric.