Hydraulic Circuits and Systems - Hydraulics and Pneumatics
Subject and UNIT: Hydraulics and Pneumatics: Unit III: Hydraulic Circuits and Systems
As we know sequence valves are used extensively for sequencing operations when two or more cylinders are involved.
Hydraulic Circuits and Systems - Hydraulics and Pneumatics
Subject and UNIT: Hydraulics and Pneumatics: Unit III: Hydraulic Circuits and Systems
A counterbalance valve, also known as a back-pressure valve, is applied to create a back pressure or cushioning pressure on the underside of a vertically moving piston to prevent the suspended load from free falling because of gravity while it is still being lowered.
Functional and Operational Requirements, Circuit, Operation
Subject and UNIT: Hydraulics and Pneumatics: Unit III: Hydraulic Circuits and Systems
It may be noted that in a punch press, the hydraulic cylinder must extend rapidly over a great distance with low-pressure but high-flow requirements and this occurs under no load.
Functional and Operational Requirements, Circuit, Operation
Subject and UNIT: Hydraulics and Pneumatics: Unit III: Hydraulic Circuits and Systems
Pump unloading is necessary to avoid the damage to the components when the pressure line is blocked in the circuit.
Functional and Operational Requirements, Circuit, Operation
Subject and UNIT: Hydraulics and Pneumatics: Unit III: Hydraulic Circuits and Systems
As we know many machine tool applications (such as drilling machine application) require faster extension of the cylinder (say, faster extension of drill spindle). This can be achieved by making rapid extension of the cylinder by regeneration.
Hydraulic Circuits and Systems - Hydraulics and Pneumatics
Subject and UNIT: Hydraulics and Pneumatics: Unit III: Hydraulic Circuits and Systems
A regenerative circuit is used to speed up the extending speed of the double-acting cylinder.
Hydraulic Circuits and Systems - Hydraulics and Pneumatics
Subject and UNIT: Hydraulics and Pneumatics: Unit III: Hydraulic Circuits and Systems
A double-acting hydraulic cylinder is to be provided with a forward and return control.
Functional and Operational Requirements, Circuit, Operation
Subject and UNIT: Hydraulics and Pneumatics: Unit III: Hydraulic Circuits and Systems
A single-acting spring return hydraulic cylinder is to be provided with, a forward and retract control. The piston is to operate continuously without any hold in between extreme positions.
Hydraulic Circuits and Systems - Hydraulics and Pneumatics
Subject and UNIT: Hydraulics and Pneumatics: Unit III: Hydraulic Circuits and Systems
A hydraulic circuit may be defined as the graphic representation of the hydraulic components in a hydraulically operated machine.
Learning Objectives, Introduction
Subject and UNIT: Hydraulics and Pneumatics: Unit III: Hydraulic Circuits and Systems
So far, we have discussed about the fundamentals and system components that are related to hydraulic systems.
Hydraulic Actuators and Control Components - Hydraulic Actuators and Control Components
Subject and UNIT: Hydraulics and Pneumatics: Unit II: Hydraulic Actuators and Control Components
two marks questions and answers: Hydraulic Actuators and Control Components - Hydraulic Actuators and Control Components
Hydraulic Actuators and Control Components - Hydraulic Actuators and Control Components
Subject and UNIT: Hydraulics and Pneumatics: Unit II: Hydraulic Actuators and Control Components
Graphic fluid power symbols, similar to symbols used in electrical circuit diagrams, are widely used both for preparing hydraulic and pneumatic circuit diagrams and as an aid in circuit design and analysis.