6. What is “HYDRAULICS”
HYDRAULICS IS A TOPIC IN APPLIED SCIENCE AND
ENGINEERING DEALING WITH MECHANICAL PROPERTIES
OF LIQUIDS.
FLUID MECHANICS PROVIDES THE THEORITICAL
FOUNDATION FOR HYDRAULICS .
HYRAULICS IS USED FOR:
GENERATION,CONTROL AND TRANSMISSION OF POWER
BY THE USE OF PRESSURISED LIQUIDS.
7. Fluid - can be almost any liquid. The most common hydraulic fluids contain
specially compounded petroleum oils.
Reservoir - acts as a storehouse for the fluid and a heat dissipater.
Hydraulic pump - converts the mechanical energy into hydraulic energy .
Fluid lines - transport the fluid to and from the pump through the hydraulic
system.
Hydraulic valves - control pressure, direction and flow rate of the
hydraulic fluid.
Actuator - converts hydraulic energy into mechanical energy to do work.
8.
9. Hydraulic cranes are some of the most popular cranes in
use; they are widely used in construction applications.
Hydraulic cranes are a type of crane that uses hydraulics
instead of cables to raise and lower workload.
10. PRINCIPLE
Pascal's Law, framed by Blaise Pascal, states that
“Pressure applied to any part of a confined fluid
transmits to every other part with no loss. The
pressure acts with equal force on all equal areas of
the confining walls and perpendicular to the
walls." This is the basic principle for any hydraulic
system
11. Working
For lower the load,
close inlet valve and
open wast valve so
that water is forced
out the cylinder hence
ram moves towards
the left and distance
between two pulley
blocks decreases,
which release the wire
rope and the load is
lowering down
12.
13. Full power stroke
Built-in overload protection
Much lower original cost and operating costs
More control flexibility
Quiet
Lower tool costs
Safety
