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IIT Basic Hydraulics Interactive Computer Based Training Course
Post: #1

IIT Basic Hydraulics Interactive Computer Based Training Course


.pdf  Basic Hydraulics.pdf (Size: 3.08 MB / Downloads: 23)

COURSE INTRODUCTION

Welcome again to the IIT Basic Hydraulics Interactive Computer Based Training Course.
This course has been designed to give you a broad based understanding of the most
important hydraulic concepts. Upon completion of this course, you should understand
various basic physics laws as they apply to fluid power, as well as understand schematics
and system design. You will also study the various components found in a typical
hydraulics system and how these components function and interact with each other.
From this main menu, you can select from any of the course topics listed on the right hand
side of your screen. Although you can work through these topics in any order, we
recommend that you start at the top of the list with Fluid Power Physics and continue
through the subjects from top to bottom. These topics are presented in this order to aid in
your understanding of the material presented. While using this program, you can return to
the main menu screen at any time.

FLUID POWER PHYSICS

Introduction


After completing the lessons and exercises in this section you will better understand the
basic physics principles that govern fluid power. These principles are timeless and
understanding them well will provide you with a solid foundation on which to learn much
more about fluid power.

Energy

As we begin our study of basic hydraulics we must first recognize that fluid power is
another method of transferring energy. This energy transfer is from a prime mover, or input
power source, to an actuator or output device. This means of energy transfer, although not
always the most efficient, where properly applied may provide optimum work control.
Energy may be defined as the ability to do work.

Work:

Work is defined as force through distance. If we move 1000
pounds a distance of 2 feet we have accomplished work. We
measure the amount of work in foot-pounds. In our example, we
have moved 1000 pounds 2 feet or have accomplished 2000 footpounds
of work.

Horsepower:

Mathematically, hydraulic horsepower is expressed as follows: horsepower
equals flow, in gallons per minute (gpm), times pressure, inch-pounds per square inch
(psi), divided by 1714, a constant. In our illustration we are lifting 10,000 pounds (this is
our force) a distance of 1 foot (this is the work to be accomplished). If we lift our load in 2
seconds we have defined a power requirement. This may be expressed as hydraulic
horsepower. To lift our 10,000 pounds a distance of one foot in 2 seconds we must have a
required flow rate at a specific pressure, based on cylinder size and the pump flow
discharge. In this illustration a 10 gpm pump is required to extend the cylinder in 2
seconds. The pressure requirement to lift the 10,000 pounds is 1500 psi. Based on our
formula our theoretical horsepower requirement would be 8.75.

Torque:

Torque is twisting force. It is also measured in foot-pounds. In this illustration we
are producing 10 foot-pounds of torque when we apply 10 pounds of force to a 1 foot-long
wrench. This same theory applies to hydraulic motors. Hydraulic motors are actuators that
are rated in specific torque values at a given pressure. The twisting force, or torque, is the
generated work. A motor’s rotations per minute (rpm) at a given torque specifies our
energy usage or horsepower requirement.

Flow

Flow in a hydraulic system is produced from a positive displacement pump. This is
different from a centrifugal pump, which is not positive displacement. There are three
important principles that must be understood relating to flow in a hydraulic system.
Principle one: Flow makes it go. For anything to move in a hydraulic system the actuator
must be supplied with flow. This cylinder is retracted. It can extend only if there is flow into
port B. Shifting the directional control valve will send flow to either extend or retract the
cylinder.
Principle two: Rate of flow determines speed. Rate of flow is usually measured in gpm or
gpm. Gpm is determined by the pump. Changes in pump output flow will change the
speed of the actuator.
Principle three: With a given flow rate, changes in actuator volume displacement will
change actuator speed. With less volume to displace, the actuator will cycle faster. For
example, there is less volume to displace when we retract, because the cylinder rod
occupies space, diminishing the volume to be displaced. Notice the difference in speed
between extend and retract.
Post: #2
Welcome back to the IIT Basic Hydraulic Computer Based Interactive Training Course. This course has been designed to give you a broad understanding of the most important hydraulic concepts. By completing this course, you should understand the basic laws of physics as they apply to the power of fluids as well as understand schematics and system design. You will also study the various components found in a typical hydraulic system and how these components work and interact with each other. From this main menu, you can select any of the course topics that appear on the right side of your screen. Although you can work through these topics in any order, it is recommended that you start at the top of the list with Fluid Power Physics and continue the topics from top to bottom. These topics are presented in this order to help your understanding of the material presented. When using this program, you can return to the main menu screen at any time. The interactive nature of this program will allow you to study and learn at your own pace. You will also find it useful to review this information from time to time, even after completing the course.

The Training Course in Industrial Hydraulics covers the basic hydraulic principles and hydraulic components in explicit details. The industrial hydraulic training program has a dedicated module that builds a basic hydraulic circuit and gives a hydraulic input and output circuit, - detailed explanation of the relevance and coordination of the different hydraulic components.

The primary focus on hydraulic components and hydraulic circuit graphics / animations helps to understand the hydraulic operating / operating principles very clearly. Animated cut sections provide a deep insight into how hydraulics work.

O In-depth coverage of the principles of hydraulics
O Detailed description of components and operation
O Construction of a circuit with two jobs
O Extensive graphics, models and 2D / 3D animations
O Skills tests, certificate impressions
 

Marked Categories : iit basic hydraulics pdf, basic hydraulics interactive training course download, hydraulics training iit, hydraulics pdf computer based training course, basic hydraulic system training by iit, hydraulics interactive,

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