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EXCAVATOR

Excavators are heavy construction equipment consisting of aboom,bucket and cab on a rotating

platform (known as the "house"). The house sits atop an undercarriage with tracks orwheels. Allmovement and functions of the excavator are accomplished through the use ofhydraulic fluid, be it

with rams ormotors. Their design is a natural progression from the steam shovel. Excavators are also

called diggers , a JCB (which is aproprietary name) or 360-degree excavators sometimes abbreviated

simply to 360. Tracked excavators are sometimes called "trackhoes" by analogy to the backhoe. In

the UK, wheeled excavators are sometimes known as "rubber ducks."

USES OF EXCAVATOR

Excavators are used in many ways:

Digging oftrenches, holes, foundations

Material handling

Brush cutting with hydraulic attachments

Forestry work

Demolition

General grading/landscaping

Heavy lift, e.g. lifting and placing of pipes Mining, especially, but not onlyopen-pit mining

Riverdredging

Drivingpiles, in conjunction with a Pile Driver
http://en.wikipedia.org/wiki/Heavy_equipment_(construction)http://en.wikipedia.org/wiki/Backhoehttp://en.wikipedia.org/wiki/Bucket_(machine_part)http://en.wikipedia.org/wiki/Caterpillar_trackhttp://en.wikipedia.org/wiki/Wheelhttp://en.wikipedia.org/wiki/Hydraulic_fluidhttp://en.wikipedia.org/wiki/Hydraulic_cylinderhttp://en.wikipedia.org/wiki/Hydraulic_motorhttp://en.wikipedia.org/wiki/Steam_shovelhttp://en.wikipedia.org/wiki/J._C._Bamfordhttp://en.wikipedia.org/wiki/Backhoehttp://en.wikipedia.org/wiki/UKhttp://en.wikipedia.org/wiki/Trenchhttp://en.wikipedia.org/wiki/Trenchhttp://en.wikipedia.org/wiki/Foundation_(architecture)http://en.wikipedia.org/wiki/Demolitionhttp://en.wikipedia.org/wiki/Mininghttp://en.wikipedia.org/wiki/Mininghttp://en.wikipedia.org/wiki/Open-pit_mininghttp://en.wikipedia.org/wiki/Open-pit_mininghttp://en.wikipedia.org/wiki/Riverhttp://en.wikipedia.org/wiki/Dredginghttp://en.wikipedia.org/wiki/Deep_foundationhttp://en.wikipedia.org/wiki/Pile_Driverhttp://en.wikipedia.org/wiki/Heavy_equipment_(construction)http://en.wikipedia.org/wiki/Backhoehttp://en.wikipedia.org/wiki/Bucket_(machine_part)http://en.wikipedia.org/wiki/Caterpillar_trackhttp://en.wikipedia.org/wiki/Wheelhttp://en.wikipedia.org/wiki/Hydraulic_fluidhttp://en.wikipedia.org/wiki/Hydraulic_cylinderhttp://en.wikipedia.org/wiki/Hydraulic_motorhttp://en.wikipedia.org/wiki/Steam_shovelhttp://en.wikipedia.org/wiki/J._C._Bamfordhttp://en.wikipedia.org/wiki/Backhoehttp://en.wikipedia.org/wiki/UKhttp://en.wikipedia.org/wiki/Trenchhttp://en.wikipedia.org/wiki/Foundation_(architecture)http://en.wikipedia.org/wiki/Demolitionhttp://en.wikipedia.org/wiki/Mininghttp://en.wikipedia.org/wiki/Open-pit_mininghttp://en.wikipedia.org/wiki/Riverhttp://en.wikipedia.org/wiki/Dredginghttp://en.wikipedia.org/wiki/Deep_foundationhttp://en.wikipedia.org/wiki/Pile_Driver


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Excavator attachment

In recent years, hydraulic excavator capabilities have expanded far beyond excavation tasks

withbuckets. With the advent of hydraulic powered attachments such as abreaker, agrappleor

an auger, the excavator is frequently used in many applications other than excavation. Manyexcavators feature a quick couplerfor simplified attachment mounting, increasing the machine's

utilization on the jobsite. Excavators are usually employed together with loaders andbulldozers. Most

wheeled, compactand some medium sized (11 to 18 tonne) excavators have a backfill (or dozer)

blade. This is a horizontalbulldozer-like blade attached to the undercarriage and is used for levelling

& pushing removed material back into a hole.

Pictures of excavator

An old excavator under the Northwest (now Terex) name at the Pageant of Steamgroun

Excavator demolishing a house. Note the hydraulic thumb

Link-Belt excavator trenching.
http://en.wikipedia.org/wiki/Bucket_(mechanical_engineering)http://en.wikipedia.org/wiki/Bucket_(mechanical_engineering)http://en.wikipedia.org/wiki/Breaker_(hydraulic)http://en.wikipedia.org/wiki/Breaker_(hydraulic)http://en.wikipedia.org/wiki/Grapple_(construction)http://en.wikipedia.org/wiki/Grapple_(construction)http://en.wikipedia.org/wiki/Grapple_(construction)http://en.wikipedia.org/wiki/Augerhttp://en.wikipedia.org/wiki/Quick_couplerhttp://en.wikipedia.org/wiki/Quick_couplerhttp://en.wikipedia.org/wiki/Loader_(equipment)http://en.wikipedia.org/wiki/Bulldozershttp://en.wikipedia.org/wiki/Compact_excavatorhttp://en.wikipedia.org/wiki/Compact_excavatorhttp://en.wikipedia.org/wiki/Bulldozer#Bladehttp://en.wikipedia.org/wiki/Terexhttp://en.wikipedia.org/wiki/Pageant_of_Steamhttp://en.wikipedia.org/wiki/Thumb_(backhoe)http://en.wikipedia.org/wiki/File:LinkBelt290X2Excavator.jpghttp://en.wikipedia.org/wiki/File:LinkBelt290X2Excavator.jpghttp://en.wikipedia.org/wiki/File:House_Demolition.jpghttp://en.wikipedia.org/wiki/File:House_Demolition.jpghttp://en.wikipedia.org/wiki/File:Old_excavator.jpghttp://en.wikipedia.org/wiki/File:Old_excavator.jpghttp://en.wikipedia.org/wiki/Bucket_(mechanical_engineering)http://en.wikipedia.org/wiki/Breaker_(hydraulic)http://en.wikipedia.org/wiki/Grapple_(construction)http://en.wikipedia.org/wiki/Augerhttp://en.wikipedia.org/wiki/Quick_couplerhttp://en.wikipedia.org/wiki/Loader_(equipment)http://en.wikipedia.org/wiki/Bulldozershttp://en.wikipedia.org/wiki/Compact_excavatorhttp://en.wikipedia.org/wiki/Bulldozer#Bladehttp://en.wikipedia.org/wiki/Terexhttp://en.wikipedia.org/wiki/Pageant_of_Steamhttp://en.wikipedia.org/wiki/Thumb_(backhoe)


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BACKACTER

USES

The Backacter is the world's first dedicated marine dredging excavator. It is designed for one

purpose only and that is to dredge on a dipperdredger. It has no compromises, but only

advantages. A complete range was designed and build. In the past (what we now call a classic

excavator) an existing excavator was put on the dredger's deck, its tracks and mining

attachment were removed, a backhoe attachment was added.

General Features:

A top-class marine dredger with all drive unit power packs in spaces under deck.

Big buckets at a deep dredging depth with high penetration forces.

No fuel stops required and therefore higher production.

High and extended dumping reach.

One hydraulic powerpack system for the Backacter, self-manoeuvrability and for the

spudsystem.

Shock-absorbing elastic foundation, integrated in the dredgers deck.

Water cooled diesel engines and water cooled hydraulic system.

For working in ambient temperatures till -25C.

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