流体力学与流体传动
Contents
Contents
Chapter 1Introduction
1.1Study on fluid mechanics
1.2Study on hydraulic and pneumatic transmission
1.3Operating principles and basic features of hydraulic and
pneumatic transmission
1.3.1Operating principles of hydraulic and pneumatic transmission
1.3.2Basic features of hydraulic and pneumatic transmission
1.4Components of hydraulic transmission system
1.5Diagram symbols of hydraulic transmission system
1.6Control modes of hydraulic transmission
1.7Advantages and disadvantages of hydraulic transmission
1.8Development history and trend of hydraulic transmission
1.8.1Development history of hydraulic transmission
1.8.2Trend of hydraulic transmission
1.9Applications of hydraulic transmission
Important and difficult understanding knowledge points discussion
in this chapter
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Summary
Review questions
Chapter 2Hydraulic transmission operating medium
2.1Characteristics and selection and application of hydraulic transmission
operating medium
2.1.1Classification of hydraulic transmission operating medium
2.1.2Physical characteristics of hydraulic transmission operating
medium
2.1.3Chemical characteristics of hydraulic transmission operating
medium
2.1.4Main performance requirements of hydraulic transmission
operating medium
2.1.5Selection of hydraulic transmission operating medium
2.1.6Application of hydraulic transmission operating medium
2.2Pollution and control of hydraulic transmission operating medium
2.2.1Pollution classification of hydraulic transmission operating
medium
2.2.2Pollution causation of hydraulic transmission operating medium
2.2.3Contamination grade of hydraulic transmission operating
medium
2.2.4Pollution measurement of hydraulic transmission operating
medium
2.2.5Pollution hazard of hydraulic transmission operating medium
2.2.6Pollution control and measures of hydraulic transmission
operating medium
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Chapter 3Hydromechanics basic knowledge
3.1Hydrostatic mechanics basic knowledge
3.1.1Pressure and characteristics in stationary liquids
3.1.2Pressure spread in stationary liquids and basic equation of
hydrostatic mechanics
3.1.3Hydrostatic pressure transmission of liquids
3.1.4Absolute pressure, relative gaugepressure and vacuum
negative pressure
3.1.5Force in stationary liquids acting on surfaces of the container
3.2Hydrodynamics basic knowledge
3.2.1Basic concepts of flow liquid
3.2.2Flow continuity equation
3.2.3Bernoullis equation
3.2.4Momentum equation
3.3Pressure losses at the pipes surfaces and within the liquids as
liquids move in pipes
3.3.1Laminar flow, turbulent flow and Reynolds number of liquids
3.3.2Pressure losses at the pipes surfaces and within the liquids
3.3.3Pressure losses at a particular location
3.3.4Total pressure losses in pipesystem
3.4Flow of liquid moving through orifice
3.5Flow of liquid moving through narrow clearance
3.6Cavitation
3.7Pressure shock
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Chapter 4Hydraulic power components
4.1Hydraulic pumps introduction
4.1.1Operating principles of hydraulic pumps
4.1.2Classification of hydraulic pumps
4.1.3Diagram symbols of hydraulic pumps
4.1.4Basic performance and parameters and equations of
hydraulic pumps
4.1.5Characteristic curves and measures of hydraulic pumps
4.2Gear pumps
4.2.1Operating principles of external gear pumps
4.2.2Displacement and flow equation of external gear pumps
4.2.3Structure characteristics of external gear pumps
4.2.4Measures to improve operating pressure of external gear pumps
4.2.5Involute internal gear pumps
4.2.6Orbit internal gear pumps
4.2.7Internal gear pumps with pressure relief valves
4.2.8Main performance of external gear pumps
4.2.9Advantages and disadvantages of gear pumps
4.2.10Screw pumps
4.3Vane pumps
4.3.1Singleacting vane pumps
4.3.2Pressure limited variable displacement vane pumps
4.3.3Doubleacting vane pumps
4.3.4Main performance of vane pumps
4.3.5Advantages and disadvantages of vane pumps
4.4Piston pumps
4.4.1Radial piston pumps
4.4.2Swash plate axial piston pumps
4.4.3Bent axis axial piston pumps
4.4.4Swash plate axial piston pumps with auxiliary pumps
4.4.5Main performance of piston pumps
4.4.6Advantages and disadvantages of piston pumps
4.5Main property and applications of hydraulic pumps
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Chapter 5Hydraulic actuators
5.1Hydraulic cylinders
5.1.1Classification and characteristics of hydraulic cylinders
5.1.2Structure and installation of hydraulic cylinders
5.1.3Design and calculation of hydraulic cylinders
5.1.4Installation and troubleshooting and repairing of hydraulic
cylinders
5.2Digital control hydraulic cylinders and simulative control hydraulic
cylinders
5.2.1Digital control hydraulic cylinders
5.2.2Simulative control hydraulic cylinders
5.3Hydraulic motors introduction
5.3.1Characteristics and classification of hydraulic motors
5.3.2Basic property and parameters of hydraulic motors
5.4High speed hydraulic motors
5.4.1Gear hydraulic motors
5.4.2Vane hydraulic motors
5.4.3Axial piston hydraulic motors
5.5Low speed hydraulic motors
5.5.1Singleacting crankshaft connecting rod radial piston motors
5.5.2Multiacting internal curves radial piston motors
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Chapter 6Hydraulic control components
6.1Hydraulic control valves introduction
6.1.1Basic structure and operating principles of hydraulic control
valves
6.1.2Classification of hydraulic control valves
6.1.3Basic performance and parameters of hydraulic control valves
6.1.4Basic requirements for hydraulic control valves
6.2Pressure control valves
6.2.1Pressure relief valves
6.2.2Pressure sequence valves
6.2.3Pressure reducing valves
6.2.4Hydroelectric pressure switch
6.3Directional control valves
6.3.1Check valves
6.3.2Directional valves
6.4Flow control valves
6.4.1Types and flow characteristics of throttle ports
6.4.2Throttle valves
6.4.32way flow control valves with pressure compensators
6.4.43way flow control valves with pressure compensators
6.4.5Flow divider and combiners
6.4.6Limiting flow valve
6.5Cartridge valves
6.5.1Introduction and advantages of cartridge valves
6.5.2Components and operating principles of cartridge valves
6.5.3Cartridge pressure valves
6.5.4Cartridge directional valves
6.5.5Flow cartridge valves
6.6Modular valves
6.7Hydraulic multipathway control valves
6.8Electrohydraulic servo control valves
6.8.1Basic types of hydraulic servo control component
6.8.2Electrohydraulic servo control valves
6.8.3Mechanical hydraulic servo control valves
6.9Electrohydraulic proportional control valves
6.9.1Main property and parameters of electrohydraulic proportional
control valves
6.9.2Electrohydraulic proportional pressure control valves
6.9.3Electrohydraulic proportional directional control valves
6.9.4Electrohydraulic proportional flow control valves
6.10Electrohydraulic digital control valves
6.10.1Characteristics and classification of electrohydraulic digital
control valves
6.10.2Increment electrohydraulic digital control valves
6.10.3Pulse width modulation electrohydraulic digital control
valves
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Chapter 7Hydraulic accessories
7.1Filters
7.1.1Basic property and parameters of filters
7.1.2Classification and structure characteristics of filters
7.1.3Selection and application of filters
7.1.4Installation of filters
7.2Accumulators
7.2.1Classification and structure and operating principle of
accumulators
7.2.2Calculation of accumulator parameters
7.2.3Installation and use of accumulators
7.2.4Application of accumulators
7.3Hydraulic seals
7.3.1Classification of seals
7.3.2Basic requirement for seals
7.3.3Material of common seals
7.3.4General seal methods
7.3.5Structure and characteristics of common seals
7.4Pipes and pipe fittings
7.4.1Classification and material of pipes
7.4.2Determining of pipes inner diameter and wall thickness
7.4.3Installation requirement of pipes
7.4.4Pipe fittings
7.5Oil tanks
7.5.1Function and type of oil tanks
7.5.2Volume calculation of oil tanks
7.5.3Design characteristics of oil tanks
7.6Heaters
7.7Coolers
7.7.1Coolers without cooling medium
7.7.2Coolers with cooling medium
7.7.3Calculation of coolers
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Chapter 8Basic circuits of hydraulic transmission
8.1Pressure control circuits
8.1.1Pressure adjusting control circuits
8.1.2Load pressure releasing control circuits
8.1.3Pressure reducing control circuits
8.1.4Pressure increasing control circuits
8.1.5Circuits for pressure protecting
8.1.6Pressure releasing control circuits
8.1.7Pressure balancing control circuits
8.2Speed control circuits
8.2.1Introduction
8.2.2Throttle adjusting speed control circuits
8.2.3Volume adjusting speed control circuits
8.2.4Volume and throttle adjusting speed control circuits
8.2.5High speed control circuits
8.2.6Speed conversion control circuits
8.3Directional control circuits
8.3.1Directional circuits
8.3.2Circuits for lock releasing
8.3.3Locking circuits
8.3.4Brake circuits
8.4Multiactuators motion control circuits
8.4.1Sequence motion control circuits
8.4.2Synchronizing motion control circuits
8.4.3Highlow speed motion noninterference control circuits of
hydraulic cylinders
8.4.4Hydraulic multipathway valves control circuits
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Chapter 9Typical hydraulic transmission systems analysis
9.1Hydraulic transmission system analysis of power work table in
YT4543 combining machine tool
9.1.1Introduction
9.1.2Hydraulic transmission system and operating principles of power
work table in YT4543 combining machine tool
9.1.3Main characteristics of hydraulic transmission system of power
work table in YT4543 combining machine tool
9.2Hydraulic transmission system analysis of the 3150kN press machine
9.2.1Introduction
9.2.2Hydraulic transmission system and operating principles of
press machine
9.2.3Main characteristics of hydraulic transmission system of press
machine
9.2.4Cartridge valves integrating hydraulic transmission system and
operating principles of press machine
9.3Hydraulic transmission system analysis of model Q28 automobile crane
9.3.1Introduction
9.3.2Hydraulic transmission system operating principles of model
Q28 automobile crane
9.3.3Hydraulic transmission system characteristics of model Q28
automobile crane
9.4Hydraulic transmission system analysis of model XSZY250A plastic
injection machine
9.4.1Introduction
9.4.2Hydraulic transmission system and operating principles of
plastic injection machine
9.4.3Main characteristics of hydraulic transmission system of
plastic injection machine
9.5Hydraulic transmission system analysis of mechatronics system
excavator
9.5.1Introduction
9.5.2Hydraulic transmission system components of mechatronics system
excavator
9.5.3Hydraulic transmission system technical characteristics of
mechatronics system excavator
9.6Light and electrohydraulic servo control system analysis of metal band
position error
9.6.1Introduction
9.6.2Components and operating principles of light and electrohydraulic
servo control system of metal band position error
9.7Manually operated servo hydraulic cylinder control system analysis
9.8Calculator control and electrohydraulic transmission technology
analysis
9.8.1Introduction
9.8.2Components of calculator control volume adjusting speed
circuit and electrohydraulic transmission
9.8.3Software design of calculator control volume adjusting speed circuit
and electrohydraulic transmission
9.8.4Hardware design of calculator control volume adjusting speed circuit
and electrohydraulic transmission
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Chapter 10Design and calculation of hydraulic transmission system
10.1Introduction and design of hydraulic transmission system
10.2Understanding design requirements and analyzing operating load
condition
10.3Determining main performance and parameters of hydraulic
transmission system
10.4Drawing schematic illustration of operating principle of hydraulic
transmission system
10.5Calculation and selection of hydraulic components
10.6Performance calculation of hydraulic transmission system
10.7Drawing product blueprint and compiling technical files
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Chapter 11Basic knowledge of pneumatic transmission
11.1Introduction
11.1.1Components and operating principles of pneumatic
transmission system
11.1.2Advantages and disadvantages of pneumatic transmission
11.1.3Application and development of pneumatic transmission
11.2Characteristics of pneumatic operating medium
11.2.1Components of pneumatic operating medium
11.2.2Basic condition parameters of pneumatic operating medium
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Chapter 12Pneumatic power source units and accessories
12.1Pneumatic power source units
12.1.1Components and operating principles of pneumatic power
source units
12.1.2Air compressor
12.1.3Main pneumatic power source cleaning units
12.2Accessories
12.2.1Separators
12.2.2Lubricators
12.2.3Mufflers
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Chapter 13Pneumatic actuators
13.1Pneumatic cylinders
13.1.1Classification of pneumatic cylinders
13.1.2Operating principles of pneumatic cylinders
13.1.3Output force and consumption calculation of pneumatic
cylinders
13.2Pneumatic motors
13.2.1Classification of pneumatic motors
13.2.2Operating principles of pneumatic motors
13.2.3Operating characteristics and operating pressure of
pneumatic motors
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Chapter 14Control components of pneumatic transmission
14.1Pressure control valves
14.1.1Pressure reducing valves
14.1.2Pressure relief valves
14.1.3Pressure sequence valves with check valves
14.2Directional control valves
14.2.1Check valves
14.2.2Directional control valves
14.3Flow control valves
14.3.1Throttle valves
14.3.2Throttle check valves
14.3.3Exhaust muffler and throttle valves
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Chapter 15Basic circuits of pneumatic transmission
15.1Pressure control circuits
15.1.1First grade pressure control circuits
15.1.2Second grade pressure control circuits
15.1.3Highlow pressure selection control circuits
15.2Directional control circuits
15.2.1Singleacting pneumatic piston cylinder directional circuits
15.2.2Doubleacting pneumatic piston cylinder directional circuits
15.3Speed control circuits
15.3.1Throttle adjusting speed control circuits of singleacting
piston pneumatic cylinders
15.3.2Twoway throttle adjusting speed control circuits of doubleacting
and singlepistonrod pneumatic cylinders
15.4Pneumatic and hydraulic acting circuits
15.4.1Pneumatic and hydraulic pressure increasing control circuits
15.4.2Speed control circuits of pneumatic and hydraulic acting
15.4.3Synchronizing motion control circuits of pneumatic and
hydraulic cylinders
15.5Reciprocating circuits
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Chapter 16Analysis of pneumatic transmission control system
16.1Examples of pneumatic transmission control system
16.1.1Exchanging tool control system analysis of pneumatic
transmission on numerical control machine center
16.1.2Analysis of pneumatic transmission control system used in
workpiece clamped on the tooling and fixture
16.2XD method design of pneumatic transmission distance programmable control
system
16.3Installation, adjusting,application and maintenance of pneumatic
transmission control system
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Appendix AAbstract of partial diagram symbols of hydraulic and pneumatic
transmission
Appendix BChinese and English key symbols, vocabularies and terms of hydraulic
and pneumatic transmission
Bibliography
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