كتاب Basic Hydraulics Workshop

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Basic Hydraulics Workshop
International Maritime Training Centre

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Contents
1. Advantages of Hydraulic Systems .
2. Fundamental Principles
3. Block Diagram of Hydraulic Systems
4. Component and Circuit Symbols
5. Hydraulic Fluid
6. Reservoirs
7. Filters and Contaminants
8. Pumps .
9. Direction Control Valves
10. Solenoids for Valve Actuation
11. Pressure Control Valves.
12. Flow Control Valves .
13. Actuators
14. Accumulators
15. Safety Precautions .
16. Maintenance and Watchkeeping
17. Hoses and Hose Fittings
18. Seals .
19. Troubleshooting Hints and Guidelines
20. Thumb Rules for Hydraulic Systems
International Maritime Training Centrebasic Hydraulic Workshop Revo.0 July 03
Aim of the Course:
1. To Understand Fundamental Principles of Hydraulics
2. To Read Hydraulic and Pneumatic Circuit Diagrams With the
Help of Symbols
3. Know the Construction & Function of Important
Components Used in Hydraulics
4. Operate, Maintain and Troubleshoot Hydraulic Systems
Advantages:
1. Automatic Lubrication.
High Power / Weight Ratio - Small Component Can Handle Large
Power. Dfcw.
3. Simple Design, Few Parts & Less Complicated Construction.
Flexibility- Same Component Can Do Different Jobs Can Take Power Anywhere, Only Pipes, Hoses Required.
Ease of Control Only a Lever Required to Start/stop/reverse the Actuator.
Precise Motion Control - Jobs Exactly as Required, Less Waste &
Better Quality.
Force Multiplication Achieved Without Levers, Pulleys Gears , and Chains Etc.
Better Speed Control- From <1rpm to >1000 Rpm (Motor Can Even Be
Made to Stall).
9. Instant Stopping / Reversibility.
10. Constant Torque With Variable Speed Since Torque a
Pressure and Speed* Flow
11. Inbuilt Safety - Actuator Can Be Stalled at Full Load (Even if Relief Valve
Lifts- It Will Reset Immediately When Overload is Removed.
12. Automatic Braking- by Blocking Flow, No Brakes, Linings Etc. Required.
13. Can Be Used in Hazardous Conditions.
International Maritime Training Centre 1

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