Jib Crane and Mobile Lifting Gantry Systems

Published: 12th October 2011
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This editorial takes a short look at the most commonly used forms of larger lifting gear products, such as cranes and Jibs; furthermore incorporating how and where they may be utilised.

The expression lifting gear or lifting equipment refers to any product that is used to lift, lower and move heavy or difficult objects, it may also include safety products that are utilized when lifting loads or working from heights. All kinds of lifting gear should always be purchased from a trusted provider, and must always be issued with test certificates, and safety advice, declarations of conformity to the EU standards are also a must.

When considering Lifting gear the first thing that springs to mind in almost everyone is a crane; cranes are available in all manner of styles and sizes, from the huge cranes you may see in dockyards which are used for loading containers on ships, as well as for ship building and maintenance, you would also expect to observe these large cranes on construction sites where they're frequently used to lift heavy materials up to the height required, for instance, roof trusses.

There are other varieties of cranes which are commonly utilised in numerous industries that perhaps you wonít observe very often, they are the smaller mobile lifting gantry cranes which are tremendously versatile. A mobile lifting gantry may also be referred to as a lifting gantry, mobile gantry or an A-frame gantry; the latter assumed its name due to its form as both supporting end structures are typically an "A" shape constructed from 2 pieces of steel having a cross brace.

Both A frame end pieces bear the larger "H" beam across the top from where it is common place to use a beam clamp or trolley to hang the lifting device on, often an electric hoist or chain block; so the lifting gantry in reality supports and takes the weight of the load, whilst the lifting device is what actually lifts and lowers the load. Mobile lifting gantries can be fitted with heavy duty castors making them very simple to move about to where they may be needed , but must never be moved with a suspended load. These mobile gantry systems are regularly utilised in factories, warehouses and several other areas where portability is vital, and a fixed/permanent crane isn't wanted or not suitable.

The other popular form of larger lifting gear products will be the Jib Crane, which can be also known as a swing Jib. A Jib crane is a fixed structure for lifting and moving heavy loads within a certain working area. A jib crane is available in a few variations whereby they can be mounted to an upright column, wall or floor, though the mounting position will need to be assessed to make sure it is strong enough to take the load. The upright support is fitted to its secure foundations/wall and from this the jib arm or boom is fitted, this can be over braced for more headroom underneath or underbraced for where ceiling height is low.

This Jib arm can rotate or slew through 180 degrees for a wall mounted jib or up to 360 degrees for a floor mounted jib, giving the ability to manoeuvre heavy objects from one work area to another, within its radius. Most jib cranes are swung or slewed by hand, however it is possible to get powered slewing for easier rotation. Jib cranes, like the mobile lifting gantry will often use a clamp or trolley on the jib arm to where a lifting device is attached for lifting loads. These Jib cranes are normally used in a variety of places like docks, warehouses, factories, car repair garages and several manufacturing plants, and are normally used for lifting heavy items and moving them from one place to another before lowering, anywhere within the jibís slewing range.

With regard of the above information we can assume that it is not always essential to have a fixed structure for lifting and moving heavy and awkward loads,however supplementary equipment like hoists or chain blocks may be necessary to do the actual lifting.

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