Hydraulic ExcavatorPresented by: Mohsin Naqvi (851) Noman ALI (886) Rehan Saeed (883) Shahab Raja (884) Ahsan Akeel (873)

What is a hydraulic excavator:

A hydraulic excavator (digger) is a large vehicle that is designed for excavation and demolition purposes. Hydraulic excavators consist of a chassis, boom, and bucket, and move via tracks or wheels.

Types:

1.Crawler excavator:Crawler excavator runs on two endless tracks (chain wheel system). These types of excavators are used in hilly areas where risks of sliding of machinery are on the verge. Crawler type excavator has low ground pressure because of spreading of load on large area. Therefore, it is also used where soil support is weak.

2.Wheel excavator:

Wheel excavator runs on wheels and are used for excavation and loading of dump trucks and most of the time it is only used for plain ground operations. Because of wheel, it is not suitable for hilly areas due to low grip value to the ground.

Parts:

1 .Arm2 .Bucket3 .Cab4 .Shoe5 .Boom6 .Engine/Hydraulic pump7 .Counterweight8 .Track frame9 .Track chain10 .Top roller11 .Bottom roller12 .Tipping links13 .Teeth & Get

Hydraulic Excavator Work.Hydraulic excavators are entirely dependent on hydraulic systems. The hydraulic excavator’s base consists of a track or wheeled platform and provides transportation for the vehicle while supporting the chassis. The chassis allows the driver to control the hydraulic excavator by using levers to drive the vehicle, raising the boom up and down, and controlling the bucket. Because the chassis is built on top of the undercarriage, it is able to rotate 360 degrees. The boom and bucket are attached to the chassis, work in conjunction to move materials, but are controlled independently.

Usage:Excavators are used in many ways:

1 .Digging of trenches, holes, foundations2.Material handling3 .Brush cutting with hydraulic attachments4 .Forestry work5 .Forestry mulching6 .Demolition7 .General grading/landscaping8 .Mining, especially, but not only open-pit mining9 .River dredging10 .Driving piles, in conjunction with a pile driver11 .Drilling shafts for footings and rock blasting, by use of an auger or hydraulic 12 .drill attachment13 .Snow removal with snowplow and snow blower attachments

Advantages.1.Faster cycle time,2.Higher bucket penetrating force,3.More precise digging,and4.Easire operate control.5.Doing work more fast.

Disadvantages.1.More expensive 2.More weighted3.Noise4.Vibration5.Combursome plant

Conclusion:Hydroulic Excavator play an important role in our today world.We can use this technical machine to solve our hurdles and difficulties.

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