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Electric Hoists - The Basics

Throughout this article we are going to consider the electric hoist, how, where and why they are used and also their benefits.

An electric hoist is a powered device which is utilised to lift heavy or cumbersome loads, whether it is a car engine or a steel beam, large boxes or machinery. Hoists also lower and may manouevre loads. They are used to lift objects that a human can't, or possible could but would risk personal injury due to its size or weight.

Electric hoists are found in abundance across many different types of working areas, they are commonly used on construction sites, in warehouses, workshops, car maintenance garages, dockyards and large ships but there are numerous other places that they are utilised that you would not expect, for example, lifting large tree stumps out, or lowering a chandelier for maintenance and claening.

Now we will briefly examine how an electric hoist actually works.

Initially the hoist is attached to a solid load bearing structure, such as a mobile gantryjib crane or steel beam, or even just a robust, solidly anchored hook /eye. When secured the hoist's chain system may be lowered using the powered control pad, close to the item which is to be lifted, this is then either fixed directly to the load if appropriate, but a further chain sling or web sling is often utilised as these can be located around the load about it's centre of gravity, this is to ensure a balanced lift that will not tip. The sling is then attached to the hoists chain hook and then you are ready to lift, slowly at first until you are certain of its stability.

Most electric hoists will incorporate some kind of safety mechanism to prevent loads slipping and overloading, which can be extremely dangerous. Hoists usually work with a clutch system, this allows the chain to slip at a preset torque which prevents any overloading. Some electric hoists the overload limit is operated via the chain mechanically engaging with a switch mechanism. Most modern hoists have safety cut out switches so that power can be cut instantly if there is a problem with the lift.

So why use an electric hoist? There are a variety of reasons, the main issue is probably safety, as there use can hugely lower the risk of injuries, this is due to the fact that the hoist takes all the weight, not the individual, we all know how easy it is to strain your neck or back by incorrectly lifting even the lightest object. This brings us to the next advantage of cost efficiency, electric hoists are cost efficient because firstly they do the lift of what would have possible taken 3 or 4 men or more to lift, therefore reducing manpower needed, secondly as they greatly reduce injuries there will be less time off sick and so no reduction in manpower and no sick pay to provide. If your electric hoist is looked after then it should last a long time, any problems can usually be easily repaired, and a 6 or 12 monthly test and inspection should be carried out by a qualified engineer to certify its safety for use.

So it seems like an electric hoist is a cost effective and much safer way to lift all types of objects, big or large, light or heavyComputer Technology Articles, in all areas.

Source: Free Articles from ArticlesFactory.com

ABOUT THE AUTHOR


Nikki Dale works for the Lifting Gear Direct group which incorporates Lifting Hoists Direct and Wire Rope Direct. We have been supplying many types of lifting equipment to trade and industry for many years and our team are very knowledgeable and experienced where lifting gear products are concerned.

 



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