A hydraulic device is a device that uses liquids to transmit pressure equally from one point to another.
Hydraulic machines are machinery and tools that use liquid fluid power to do simple work. Heavy equipment is a common example.
In this type of machine, hydraulic fluid is transmitted throughout the machine to various hydraulic motors and hydraulic cylinders and becomes pressurised according to the resistance present. The fluid is controlled directly or automatically by control valves and distributed through hoses and tubes.
NOTE: Hydraulic machinery is operated by the use of hydraulics, where a liquid is the powering medium.
EFFECT OF AIR IN AN HYDRAULIC SYSTEM.
It is important that a hydraulic system contains no air bubbles. You may have heard about the need to “bleed the air out of the brake lines” of you car. If there is an air bubble in the system, then the force applied to the first piston gets used compressing the air in the bubble rather than moving the second piston, which has a big effect on the efficiency of the system.
EXAMPLES OF HYDRAULIC DEVICES.
Some examples of hydraulic devices include:
Jaws of life,
Zero radius lawn tractors,
The Penalty for Ignorance is Lack
3 thoughts on “HYDRAULIC DEVICES”
what is meant by micro scale hydraulic devices ,their types ,examples and application .
A minimal hydraulic power system contains six parts: an energy source, a prime mover,
a pump, a valve, conduit and an actuator.
The energy source which can be a battery or liquid fuel, provides energy to the prime mover, being an electric motor or an internal combustion engine.
A small-scale hydraulic power system is one that generates power between 10 and
100 watts, while a large-scale system generates power greater than 100 watts.
Examples of small-scale mobile systems include prosthetic hands orthoses,
small robots and powered hand tools.
They are used in industrial automation and in Production industries.