STRETCHING DEVICE AND SEAT MEMBER Russian patent published in 2011 - IPC F16H7/12 

FIELD: machine building.

SUBSTANCE: stretching device consists of base (10) equipped with shaft (70) rigidly connected to it, of pivoted lever (40) turning on shaft, of rotating pulley (50) installed on pivoted lever and of spring (30) engaged between base and pivoted lever. Retaining component (90) is rigidly attached to the shaft opposite to the base. Pivoted lever (40) and spring (30) are located between the retaining component and the base. First orifice (12) in the base, second orifice (91) in the retaining component and orifice (72) of the shaft together interact with fast (110). Axis (B-B) of orifice (12) in the base is set off at specified distance from axis (A-A) of turn of the pivoted lever, while axis (C-C) of pulley (50) rotation is set off at specified distance from axis (A-A). Seat (92) for arrangement of a tool is made in the retaining component. The base, shaft and retaining component are rigidly interconnected and form rigid seat member (200) rotating as a solid init during installation. Relative transfer between the base, shaft and retaining component do not occur during installation.

EFFECT: specified and controlled stretch of belt.

4 cl, 2 dwg