PORTABLE CRANES | TECHNOLOGY REPORT
R The Portagantry Rapide can be folded .... R... and is a man-lifter j
Related to man-lifting is the need for portable hoists in rescue scenarios – for example, winching casualties from the water or from cliffs after falls. Here, Tractel has an interesting variant: its de-rope hoist can be used manually, using the hand wheel, or the load or casualty can be raised by attaching a standard battery-powered electric drill to a socket in the centre of the hand wheel. A battery hand drill has ample power to lift a casualty from the water, as a video at
https://bit.ly/3zyooQW shows. In the US, Thern has also adopted the hand drill-drivable concept: several of its worm gear hand winches can be operated with a power drill – ideal, it says, for lifts where higher speed and less fatigue are required. The company suggests using, for example, a DeWalt heavy-duty right-angle drill kit, corded or cordless but in both cases heavy-duty, with an 1-1/8in socket adapter. Thern, too, has an instructional
S Thern worm-drive winches can be powered by a portable drill
video, at
https://bit.ly/3TYSw03 .Its winches have handles for manual operation; for powered use simply release the handle and connect the drill in its place. Loads up to 2,500lbs (1.1 tons) can be lifted. Sample performance figures for a ED330-DW11 drill with Thern’s winch model 4WM2 and 0.25in rope diameter are loads of 1,000lbs (450kg) lifted 75ft (22m) in 10 minutes, or,
a more powerful option, an ED400-DW09 drill with a similar winch model and thicker 5/16in rope to lift 2,500lbs (1,130kg) 50ft (15m) in four minutes. They have packaged kits with power drill options included. Thern does point out that these products are not rescue winches: they are not designed to lift people, or to lift things over people. Dutch winch-maker Gebuwin is another
P Gebuwin’s WA200 drill-powered winch
manufacturer to have embraced the drill-powered concept. It is interesting that all three manufacturers have adopted different approaches to the end use of the idea – it is still out-of-the-box thinking, so standardised mindsets do not yet apply. Gebuwin’s unique selling point is to use a drill-powered winch to lift and tension golf nets – the nets that provide safety from mishit balls on golf courses and driving ranges. Such nets are high – 4m or more – and are heavy. The winch the company
32 | December 2022 |
www.hoistmagazine.com
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80 |
Page 81
