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working principle of hydraulic excavator ppt
Excavators are heavy construction equipment consisting of a boom, dipper (or stick), bucket and cab on a rotating platform known as the "house".The house sits atop an undercarriage with tracks or wheels. They are a natural progression from the steam shovels and often mistakenly called power shovels. All movement and functions of a hydraulic excavator are accomplished through the use of hydraulic fluid, with hydraulic cylinders and hydraulic motors.Due to the linear actuation of hydraulic cylinders, their mode of operation is fundamentally different from cable-operated excavators which uses winches and steel ropes to accomplish the movements.The hydraulic excavator is most commonly used for digging rocks and soil, but with its many attachments it can also be used for cutting steel, breaking concrete, drilling holes in the earth, laying gravel onto the road prior to paving, crushing rocks, steel, and concrete, and even mowing landscapes. Hydraulic excavators have an operating weight of 20,000 pounds (9,072 kg) or higher.The invention of the hydraulic excavator, with its easier operation and cheaper production has replaced the cable excavator.
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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. They range in size and function, an example of which is the similar but smaller mini excavator. All versions are generally designed for the same purposes. Hydraulic excavators weigh between 3,000 and 2 million pounds and their speed ranges between 19 HP and 4,500 HP.
How Does A Hydraulic Excavator Work?
Hydraulic excavators are entirely dependent on hydraulic systems. The hydraulic excavator s base/undercarriage 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.
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We need to do a presentaion on hydraulic excavator for our course at UNSW.
We would appreciate it if you would provide us access to your ppt so as to source information for our work
Thank you
Ani & Deepak
UNSW
