Assembly drawing of cylindrical reduction gear box.

Contents

CONTENTS

Terms of Reference

1. Introduction

2. Electric motor selection. Calculation of kinematic and power parameters

3. Material Selection for Main Transmission Parts

4. Calculation of closed cylindrical transmission

5. Calculation of open chain transmission

6. Design calculation of shaft section diameters. Gearbox Sketch Layout

7. Defines the reaction in bearing supports. Epyura

8. Check of shaft strength in dangerous section

9. Check calculation of bearings

10. Check of key connection

11. Conclusion

Literature

Introduction.

In this course work, it was necessary to design a single-stage cylindrical reduction gear for driving a cradle elevator.

The designed machine unit serves as a cradle elevator drive and can be used at enterprises in various directions. Drive consists of electric motor whose shaft is connected through elastic clutch to drive shaft of cylindrical reduction gear and open chain plate gear, driven shaft of which is drive shaft of elevator.

Conclusion.

During the course work on "Machine Parts," the knowledge gained over the past period of training in such disciplines as: theoretical mechanics, material resistance, materials science was fixed. The purpose of this work is to design a cradle elevator drive, which consists of both simple standard parts and parts, the shape and dimensions of which are determined on the basis of design, technological, economic and other standards. In the course of solving the task set in front of me, the method of selecting the drive elements was mastered, design skills were obtained to ensure the necessary technical level, reliability and long service life of the mechanism. It can be noted that the designed reduction gear has good properties in all respects. Based on the results of calculation for contact endurance, the effective stresses in engagement are less than the permissible stresses. Based on the results of the calculation of bending stresses, the actual bending stresses are less than the permissible stresses. Required dynamic load capacity of bearings is less than passport capacity. When calculating, an electric motor was selected that meets the specified requirements. In the course work, a single-stage cylindrical reduction gear with helical wheels was calculated and designed. The calculation was carried out in scope and sequence according to the task.