Lifting device for shear legs has traction member which can be drawn in by drive wheel of drive, round which traction member runs

摘要

The lifting device includes a traction member (32) which draws the upper or lower ends of the leg pairs (10, 12) together. This is connected to the end of one of the leg pairs, and passes round a diverting wheel (30) on the top end of the other pair. It is connected to the drive, which can pull it in. The drive has a drive wheel (34).