Drive to horizontal shaft - drawings and DBE

Contents

Introduction

1. Electric motor selection. Kinematic and power calculation of the drive

2. Selection of materials and allowable stresses

2.1 Calculation of allowable contact stresses

2.2 Calculation of permissible bending stresses

3.3 Calculation of cylindrical helical gears

3.1 Design calculation of cylindrical helical gears

3.2 Check calculation of helical-toothed cylindrical gears

3.3 Geometric characteristics of engagement

3.4 Estimated gearbox efficiency assessment

3.5 Determination of forces in engagement

4. Calculation of chain transmission

5. Coupling selection

6. Shaft calculation

6.1 Design calculation of high-speed shaft of cylindrical reduction gear box

6.2 Design calculation of low-speed shaft of cylindrical reduction gear box

6.3 Calculation of connections of each gear box shaft with gear parts placed on it

6.3.1 Selection of key connections for high-speed shaft

6.3.2 Selection of key connections for low-speed shaft

6.4 Calculation of shafts for endurance

6.4.1 Check of high-speed shaft

6.4.2 Check of low-speed shaft

7. Bearing Selection and Calculation

7.1 Selection of high-speed shaft bearings

7.2 Selection of low-speed shaft bearings

8. Grease Selection

9. Selection of gearbox housing type and sizing of gearbox components

10. Selection of gearbox main parts fits

11. Slab Design

12. Safety issues

13. List of literature used

Introduction

In mechanical engineering, gearboxes, mechanisms co-standing from toothed or worm gears, made in the form of a separate unit and serving to transfer power from the engine to the working machine, are widely used. The kinematic drive circuit may include, in addition to the gearbox, open gears, chain or belt gear.

The purpose of the reduction gear is to reduce the angular speed and increase the torque of the driven shaft compared to the driving shaft. Mechanisms for increasing angular velocity are made in the form of separate units, called multipliers .

Structurally, the reduction gear consists of a housing (cast, cast iron or welded steel), in which the transmission elements are placed - gears, shafts, bearings, etc.

The reduction gear is designed either to drive a certain machine, or to a given load (torque on the output shaft) and gear ratio without specifying a specific purpose.

The drive is supposed to be located in a closed, heated, ventilated room equipped with a three-phase AC supply.

The drive to the horizontal shaft consists of a cylindrical reduction gear, the high-speed shaft of which is connected to the motor by belt transmission, and on the slow-speed shaft there is a compensating clutch.