Mechanical Drive Design - Single Stage Cylindrical Gearbox

Contents

Source Data

Paper

Introduction

1. Design calculation of spur gear

1.1.Define gearing geometrical parameters

1.2.Setting the gear material according to the specified wheel material and determining the permissible stresses

1.3.Define the estimated torque that the gearbox can transmit

2. Kinematic calculation of the drive

2.1.Determination of output shaft rotation speed

2.2 Selection of additional transmission type

2.3. Calculation of output shaft power and approximate determination of required engine power

2.4.Define Overall Drive Efficiency

2.5.Compute required electric motor power

2.6.Selection of electric motor size, determination of required rotation speed

electric motor

2.7. Calculation of power, speed and torque on the gear box shafts

3. Calculation of circumferential speed in engagement of gear and wheel teeth. Determination of transmission accuracy

4. Gearbox Layout

4.1 Design calculation of gear box shafts

4.2 Selection of keys

4.3 Bearing Selection

4.4 Selection of seals

4.5. Calculation of gear and wheel structural elements

4.5.1. Gear Design

4.5.2. Wheel Design

5. To Make a Gearbox Layout Sketch

6. Endurance Shaft Calculation Check

7. Calculation of bearing durability

8. Calculation of key joint strength

9. Selection of lubricants and devices

10. Development of health, safety and environmental measures

List of used literature

Application:

A - Specification

Paper

Note - 30 pages

8 drawings

1 diagram

6 tables

Bibliography when naming literary sources.

In this course design, a single-stage cylindrical gearbox is designed

(according to the proposed prototype) for a belt conveyor. Design calculation and check calculation of gear transmission of low-speed shaft, bearings, key joints, selection and calculation of coupling were made in the design.

REDUCER; MODULE; GEAR WHEEL; GEAR; SHAFT; KEY; COUPLING;

BEARING; FLANGE; COVER; SEAL; HUB; BEAD;

SHOULDER.

Introduction

The development of the economy is closely related to the growth of mechanical engineering, because the material power of a person is concluded in technology - machines, mechanisms, devices and devices that perform a very variety of useful work. Currently, there is no sector of agriculture that does not use machines and mechanisms on the largest scale.

The technical level of all sectors of the economy is closely related and largely determines the level of development of engineering. On the basis of the development of mechanical engineering, comprehensive mechanization is carried out in the industry of agriculture, construction, transport, and public utilities. Government decisions constantly pay attention to improving and developing the design of modern machines. Specify the directions and requirements to be taken into account when designing new machines and mechanisms. Designed machines and mechanisms should have the highest performance (productivity, efficiency), low energy consumption and operational materials.

Very different machines and mechanisms for the most part consist of parts and assemblies of the same type in terms of service functions. It follows that the same methods of analysis, calculation and design are used in seemingly distant branches of technology. Since most parts of general purpose machines are used in drives, they are selected by one of the objects of course design. Machine and mechanism drive is a system consisting of an engine and associated devices for driving machine working elements.

Gearbox is a complex gear train consisting of gears, shafts, axles, bearings, housing and lubrication system. By and large, the reduction gear is used to transfer power from the electric motor to the operating mechanisms. Gearboxes of this type are made with spur, crank and shivron wheels. Shafts are mounted on rolling or sliding bearings.

The body is made more often cast iron and less often steel, welded.

Designed gearbox is designed to coordinate operation mode of electrical

engine with drum operation mode. This is due to the fact that the drum speed

less than motor speed. And the torque of the drum exceeds

motor torque. The gearbox should smooth out these contradictions.