using hydraulic systems. next generation / common core standards addressed! ccss.ela literacy rst.9...
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Using Hydraulic Systems
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NEXT GENERATION / COMMON CORE STANDARDS ADDRESSED!
CCSS.ELA Literacy RST.9 10.1 Cite specific textual evidence to support analysis of science and technical texts, attending to the precise details of explanations or descriptions.
CCSS.E L A Literacy RST. 11-12.1 Cite specific textual evidence to support analysis of science and technical texts, attending to important distinctions the author makes and to any gaps or inconsistencies in the account.
CCSS.ELA Literacy.RST.9‐10.3 Follow precisely a complex multistep procedure when carrying out experiments, taking measurements, or performing technical tasks, attending to special cases or exceptions defined in the text.
CCSS.E LALiteracy.RST.11‐12.3 Follow precisely a complex multistep procedure when carrying out experiments, taking measurements, or performing technical tasks; analyze the specific results based on explanations in the text
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STUDENT LEARNING OBJECTIVES / BELL WORK!
Define hydraulics and explain its major operating systems.
Discuss the basic principles of hydraulics.
Describe the primary components of a hydraulic system.
Describe the advantages and disadvantages of hydraulic systems.
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Hydraulic actuator
Hydraulics
Hydrodynamics
Hydrostatics
Law of Conservation of Energy
Linear actuator
TERMS
Connectors Cycle time Directional
control valve Energy Filter Flow rate
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TERMS (CONTINUED)
Pressure gauge Pressure relief
valve Prime mover Pump Reservoir Rotary actuator Strainer
Micron Multiplication of
force Pascal’s Law Piping Positive
displacement pump
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INTEREST APPROACH
Have you ever used a floor jack or driven an automobile equipped with power brakes or power steering?
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HYDRAULICS
A branch of physics dealing with the mechanical properties and practical applications of fluids in motion
Hydraulic systems do not create power. They transfer power from an outside source
Prime mover – the outside source of power
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HYDRODYNAMICS
The use of liquids at high flow and low pressure to perform work
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HYDROSTATICS
Use of liquids at high pressure and low flow to perform work
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PASCAL’S LAW
Pressure applied to a confined fluid is transmitted undiminished in all directions
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APPLICATION OF PASCAL’S LAW
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MULTIPLICATION OF FORCE
The hydraulic system takes a small input force and transforms it into a larger output force
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CYCLE TIME
The amount of time required for one complete set of operations to occur. Flow rate – the measure of how many gallons per
minute of hydraulic fluid would run into a container.
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LAW OF CONSERVATION OF ENERGY
Energy may be changed from one form to another, but it cannot either be created or destroyed
Energy – the capacity to do work
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COMPONENTS OF A HYDRAULIC SYSTEM
Reservoir – supplies oil to the hydraulic pump and stores oil that returns after passing through the hydraulic circuit
Strainer – directs the hydraulic oil in a straight line through an element made of metal screens attached to a metal core
Filter – directs hydraulic oil through one of more layers of a porous elements that may trap particles
Micron – equal to 39 millionths of an inch
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PRIMARY COMPONENTS OF A HYDRAULIC SYSTEM
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COMPONENTS (CONTINUED) Pump – causes hydraulic oil to flow through the circuit
Positive displacement pump – delivers the same volume of oil per cycle regardless of the pressure at the pump outlet
Pressure gauge – measure and shows the pressure being produced in a hydraulic system.
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ABOURDOINTUBEPRESSUREGAUGE
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COMPONENTS (CONTINUED)
Directional control valve – controls the operation of the system’s cylinder sand motors by direction the flow of the fluid in the system
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PRIMARY PARTS OF A TYPICAL CYLINDER
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COMPONENTS (CONTINUED) Hydraulic actuator – converts fluid energy into
mechanical energy
Linear actuator – the output of the cylinder occurs in a straight-line manner
Rotary actuator – produces a rotating output force
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COMPONENTS (CONTINUED)
Piping – fluid conducting lines that connect various components of a hydraulic system
Connectors – used to join one piece of piping to another, or to hydraulic system components
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ADVANTAGES OF HYDRAULIC SYSTEMS
Increased flexibility
Variable speed
Multiplication of force
Reduced wear
Reversibility
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DISADVANTAGES OF HYDRAULIC SYSTEMS
High pressure
Need for cleanliness
Safety hazards
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REVIEW/SUMMARY
What is hydraulics and what are its major operating systems?
What principles govern the use of hydraulics?
What are the primary components of a hydraulic system?
What are the advantages and disadvantages associated with hydraulic systems?
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THE END!