Chain conveyor drive - directional

Contents

Terms of Reference

Introduction

1. Kinematic calculation of the drive

1.1. Electric motor selection

2. Gearbox Design

2.1. Computer Calculation Results Analysis and Option Selection for Design Study

Printout with selected variant

3. Sketched Design

3.1. Design calculation of shafts

3.2. Distances between gear parts

3.3. Select Bearing Type and Layout

4. Worm and Worm Wheel Design

5. Calculation of connections

5.1. Key connection

6. Selection of rolling bearings

6.1. Calculation of high-speed shaft bearings

6.2. Calculation of low-speed shaft bearings

6.3. Calculation of drive shaft bearings

7. Shell Part Design

8. Calculation of shafts for static strength and fatigue resistance

8.1. Calculation of low-speed shaft for static strength

8.2. Calculation of drive shaft for static strength

8.3. Calculation of low-speed shaft for fatigue resistance

9. Selection of lubricants and lubrication system

10. Coupling Design

11. Selection of elastic coupling

List of used literature

Introduction

The designed drive of a chain conveyor from an engine, a reduction gear box and two couplings mounted on a single base. Based on the results of the calculations, the engine AIR100L4 TU 16525.564-84 with a power of 4 kW with a speed of 1410 rpm, version IM1081, was selected as an electric motor. In the project, a single-stage worm gear is designed. The engine and the reduction gear (its input/high-speed shaft) are interconnected by an elastic clutch with a rubber sprocket selected according to regulatory documents. Designed compensating coupling of limiting moment is installed on low-speed shaft of reduction gear.

The main technical characteristics are shown on the drawings:

"The drive is individual. General View Drawing and Worm Gear Box. Assembly Drawing.

Technical characteristics of the drive

individual

Torque on slow-moving shaft of reduction gear 508.5 N * m

Speed of low-speed gear shaft 52.3 rpm

Gear ratio of the mechanism 27

Gearbox efficiency 86.2%

Electric motor power 4 kW

Motor shaft speed 1410 rpm

Select Bearing Type and Layout

Worm wheels should be accurately and rigidly fixed in the axial direction, also the supports of worm shafts in power transmissions are loaded with significant axial forces, therefore, roller bearings, fixing and floating supports are used as shaft supports.

As the supports of the slow-moving shaft of the reduction gear box, we choose conical roller bearings, both supports fixing, since the shaft is relatively short, the ratio l/d = 5, then it is advisable to use the installation scheme of bearings "at rest" as structurally the simplest.