YaMZ-239 Nine-step gearbox

Contents

CONTENTS

Introduction

1 Overview of truck transmission designs

2 Description of the accepted design, operation and adjustments of the designed unit

3 Calculation of the designed assembly and its elements

3.1 Selection of gear ratios of gearbox

3.2 Selection of basic parameters and dimensions of gearbox

3.3 Calculation of gearbox gears (one pair)

3.3.1 Fatigue calculation by contact stresses

3.3.2 Bending Stress Endurance Calculation

3.3.3 Calculation of gear wheels for endurance

3.4 Calculation of gearbox bearings (one shaft)

Conclusion

List of sources used

Introduction

The purpose of this course project is to consolidate the theoretical knowledge gained in the study of the discipline "Car Design" by designing a gearbox for a heavy-duty car.

The technical characteristics of the car MAZ5336 are used as the initial data for designing the gearbox of a heavy truck.