HYDRAULIC MACHINE
- It is a tools that used liquid fluid power to do simple work.
- Heavy equipment is a common examples of this types of machine.
- Hydraulic fluid are transmitted through machines to various hydraulic motors and hydraulic cylinders .
- The fluid is directly control by control waves and distributed through tubes.
- In this machines very large amount of power is transmitted through small tubes.
- Hydraulic machines is operated by the use of hydraulics.
- FORCE AND TORQUE MULTIPLICATION
A fundamental feature of hydraulic system is ability to apply force or torque multiplication in easy way, without the need of mechanical gears.
- CONSTANT PRESSURE AND LOADING SENSING SYSTEM
1. CONSTANT PRESSURE SYSTEM
Pump pressure always equal to the pressure setting for the pump regulator. This setting must cover the maximum required load pressure.
2. LOADING SENSING SYSTEM
It generate less power losses as the pump can reduce the both flow and pressure to match the load requirement . It also require additional logical valves . It generate a constant power loss related to regulating pressure.
- COMPONENTS
1. HYDRAULIC PUMP
Hydraulic pumps supply fluid to the components in the system. Pressure in the system develop in the load. Pump have a power density about ten times greater than electric motor. They are powered by electric motor connected through gears reduced vibration.
2. CONTROL VALVES
They are usually consists of spool inside the caste iron . directional control valves are designed for stackable with one valve for each hydraulic cylinder.
3. ACTUATOR
- Hydraulic Cylinder
- Hydraulic Transmission
- Brakes
- Hydraulic Motor
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