Scaffolding for catcher net during overhead power line mast maintenance

摘要

The scaffolding that tensions a safety or catcher net uses several inclined rigid props, joined to a base frame and pointing upwards. The props are telescopic or have pivots. They are moved manually, or by an electric or hydraulic motor, with remote positioning control such as radio or IR. The props are automatically matched to the height of the tensioning cable, and to the size of the net. The whole structure can be transported with the net in place. An elevator can move the whole arrangement upwards.