Advanced Hydraulics Don Gilliland

Advanced Hydraulics
Don Gilliland
Hydraulic Components
Reservoirs
Accumulators
Pumps
Valves
Actuators
Conductors
Hydraulic Components
Accumulator Functions
Energy Storage
Stabilize Pump Pulsation
Stabilize Load Shocks
StoreVolumeUnderPressure
For High Volume Demands
Hydraulic Components
Accumulators
 What You Don't Know About
Hydraulic Accumulators Can KILL
You! Click Below For Video
 https://www.youtube.com/watch?v
=-oXh3FILZdg
 Gas Accumulator Pressure Test
 https://www.youtube.com/watch?v
=6e8ZVCKCO1U
Hydraulic Components
Accumulator Types
Spring Loaded
Gas Charged (Nitrogen)
Weight Loaded
Hydraulic Counter Loaded
Accumulator Types
Spring Loaded Types
Sealed Piston
Piston may be sealed with
an O-ring, quad ring, or
square ring and may even
be backed up with a Teflon
cushion washer depending
on pressure requirements of
system and spring strength
Accumulator Types
Spring Loaded Types
Sealed Piston
Compound Spring
This accumulator system is often used
for variable loads or independent
pressure volumes for light load
extensions in sequential operation
Accumulator Types
Spring Loaded Types
Sealed Piston
Compound Spring
Diaphragm
The sprung side may be
pneumatically boosted
Accumulator Types
Spring Loaded Types
Sealed Piston
Compound Spring
Diaphragm
Hydraulic Counter Loaded
Notice: 2 different size pistons allowing for mechanical advantage boosting
that are balanced by 2 springs working against each other (learn the math!!)
Accumulator Types
Spring Loaded Types
Sealed Piston
Compound Spring
Diaphragm
Hydraulic Counter Loaded
Spring with Bellows
Review Spring Types
Spring Loaded Types
Sealed Piston
Compound Spring
Diaphragm
Hydraulic Counter Loaded
Spring with Bellows
Hydraulic Components
Accumulator Types
Spring Loaded
Gas Charged (Nitrogen)
Weight Loaded
Hydraulic Counter Loaded
Accumulator Types
Gas Charged Types
Bladder Type
Diaphragm Type
Sealed Piston Type
Metal Bellows Type
Usually Nitrogen (Nuetral)
Accumulator Types
Gas Charged Types
Accumulator Types
Gas Charged Types
Accumulator Components
Hydraulic Components
Accumulator Types
Spring Loaded
Gas Charged (Nitrogen)
Weight Loaded
Hydraulic Counter Loaded
Accumulator Types
Weight Loaded Types
Sealed Piston Type
Accumulator Types
Weight Loaded Types
Usually Piston Type
Load Used for Stabilization in
Construction Equipment
Early Hydraulics
Additional Reading
 http://hsc.csu.edu.au/engineering_studies/app
lication/lift/3377/hydraulics.htm
Weight Loaded Accumulator
 An elevated load acting on Loader Bucket Cylinders can be
used as an accumulator to be used to control ancillary
systems on
this machine
Hydraulic Components
Accumulator Types
Spring Loaded
Gas Charged (Nitrogen)
Weight Loaded
Hydraulic Counter Loaded
Accumulator Types
Hydraulic Counter Loaded
Sealed Piston Type
This Hydraulic Counter Loaded Sealed
2 size Piston Accumulator is Used to
Multiply Volume or Pressure Needs for
Various Transmission Actuators
Hydraulic Components
Accumulators
Review
Next Pumps
THE END