Tillage Machinery―Passive, Active and Combination

✍ Scribed by Hifjur Raheman, Pranay Sarkar

• Publisher: Springer
• Year: 2024
• Tongue: English
• Leaves: 194
• Category: Library

✦ Synopsis

This textbook comprehensively covers the fundamental concepts of tillage operation, including all the three kinds of tillage implements, viz. passive, active and combination. It discusses functional analysis, principle of operation, and testing of main tillage machinery. This textbook includes the design procedure and numerical examples to reinforce the theoretical concepts. It incorporates a lucid style of writing with easy-to-understand design procedure of different tillage implements. This textbook is highly useful for graduate and postgraduate students studying farm machinery and power engineering, design of agricultural machines, and allied fields.

✦ Table of Contents

Preface
Acknowledgements
Contents
About the Authors
1 Tillage
1.1 Introduction
1.2 Objectives of Tillage
1.3 Types of Tillage
1.4 Tillage Mechanics
1.5 Tillage Tool Design Factors
1.6 Classification of Tillage Implements
1.7 Patterns of Tillage Operation
References
2 Moldboard Plow
2.1 Introduction
2.2 Components of a Moldboard Plow
2.2.1 Share
2.2.2 Moldboard
2.2.3 Landside
2.2.4 Frog
2.2.5 Attachments to Moldboard Plow
2.3 Representation of Forces Acting upon a Plow Bottom
2.4 Resistance Developed During Plowing
2.5 Geometry of Share of Moldboard Plow
2.6 Furrow Inversion
2.7 Effect of Forward Speed on Longitudinal, Lateral, and Vertical Soil Reactions
2.8 Effect of Depth and Width of Cut on Draft/Specific Draft
2.9 Effect of Plow Bottom Shape and Design on Draft
2.10 Effect of Attachments and Rear Furrow Wheel on Draft
References
3 Disk Implements
3.1 Introduction
3.2 Forces Acting on the Disk
3.3 Disk Plow
3.3.1 Types of Disk Plow
3.3.2 Soil Reactions on Plow Disks
3.3.3 Horizontal Hitching of Pull-Type Disk Plows
3.4 Disk Harrows
3.4.1 Types of Disk Harrow
3.4.2 Soil Reactions on Disk Harrow Blades
3.4.3 Forces Acting upon a Disk Harrow
3.4.4 Couple Acting on Disk Harrow Gangs
3.4.5 Disk Harrow with Hinged Pull Members but Without Gage Wheels or Runners
3.5 Design of Disk Implements
3.5.1 Width of Disk Implements
3.5.2 Diameter of Disk
3.5.3 Thickness of Disk
3.5.4 Spacing between Disks
3.5.5 Number of Disks per Gang
3.5.6 Design of Shaft
3.5.7 Design of Frame
References
4 Cultivator
4.1 Introduction
4.2 Cultivator Teeth (Working Elements)
4.3 Working Zone of the Cultivator's Tooth
4.4 Shanks of Rigid Teeth
References
5 Rotary Tillage Implements
5.1 Introduction
5.2 Rotavator
5.2.1 Construction and Different Components of a Rotavator
5.2.2 Kinematics of Blade-Soil Interaction
5.2.3 Angles Associated with Cutting Trajectory
5.2.4 Forces Acting on the Furrow Slice and Specific Work
5.2.5 Design of a Rotavator
5.3 Powered Disk Harrow
5.3.1 Disk Diameter
5.3.2 Disk Blade
5.3.3 Disk Spacing
5.3.4 Cutting Width of Single Acting Disk Harrow
5.3.5 Calculation of Total Power Required
5.3.6 Gang Shaft Design
References
6 Combination Tillage Implements
6.1 Introduction
6.2 Classification of Combination Tillage Implements
6.3 General Approach for Prediction of the Power Requirement of Combination Tillage Implements
6.3.1 Passive-Passive Combination Tillage Implements
6.3.2 Active–Passive Combination Tillage Implements
6.4 Performance Evaluation of Combination Tillage Implements
6.4.1 Cone Index
6.4.2 Mean Weight Diameter (MWD)
6.4.3 Width of Cut
6.4.4 Actual Field Capacity (AFC) and Field Efficiency (FE)
6.4.5 Volume of Soil Handled Per Unit Time
6.4.6 Soil Inversion
6.4.7 Fuel Energy Input to the Tractor
6.4.8 Overall Performance
6.5 Design of Combined Offset Disk Harrow
6.5.1 Disk Diameter
6.5.2 Disk Blade Material
6.5.3 Disk Spacing
6.5.4 Cutting Width of Single Acting Disk Harrow
6.5.5 Prediction of Soil Disturbance Area for Calculation of Specific Draft
6.5.6 Specific Draft Estimation Model for Powered Disk Harrow
6.5.7 Estimation of Draft Requirement of Powered and Unpowered Disk Gangs
6.5.8 Estimation of Equivalent PTO Power of the Tractor
6.5.9 Gang Shaft Design
References
7 Measurement of Parameters for Performance Evaluation of Tillage Implements
7.1 Introduction
7.2 Testing of Tillage Implements
7.2.1 Testing of Plow
7.2.2 Testing of Disk Harrow
7.2.3 Testing of Rotary Tiller
7.3 Instrumentation for Measuring Tillage Performance Parameters
7.3.1 Draft Measurement
7.3.2 Torque Measurement
7.3.3 Wheel Slip Measurement
7.3.4 Measurement of Fuel Consumption
References