OHS Code Explanation Guide

Published Date: July 01, 2009
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Part 25 Tools, Equipment and Machinery

Section 370 Drive belts

Drive belts include power transmission belts such as flat belts, round belts, V-belts, etc. Conditions such as misalignment at loading points, sidewinds, rain, snow and build-up of product can interfere with the alignment or “train” of belts.

Subsection 370(1)

Realigning belts is one of the highest risk activities. When realignment is attempted on a moving belt, workers can get hands, tools or clothing caught in machinery, be struck by components, or be pulled into pinch points where they may lose a limb or be crushed. Under no circumstances is a worker allowed to manually shift a belt while it is in motion or while the machine or motor is energized.

Subsection 370(2)

A belt shifter is a device for mechanically shifting belts from tight to loose pulleys or vice versa, or for shifting belts on cones of speed pulleys (see Figure 25.1). Permanent drive belts must be provided for all loose pulleys on a machine and must be constructed so that the drive belt cannot creep back onto the driving pulley.

Figure 25.1 Example of mechanical pulley shifting device