Design of bridge crane with box beams

Contents

Introduction

1 Load lifting mechanism

1.1 Development of polyspast diagram and selection of polyspast kinematic diagram

1.2 Hook Suspension Selection

1.3 Rope Selection

1.4 Determination of the main parameters of the drum

1.5 Selection of electric motor

1.6 Gearbox selection

1.7 Calculation of drum assembly

1.8 Selection of bearings

1.9 Selection of couplings

1.9.1 Selection of coupling connecting electric motor and reduction gear box

1.9.2 Selection of coupling connecting reduction gear and drum

1.10 Brake selection

2 Trolley movement mechanism

2.1 Selection of kinematic circuit

2.2 Selection of wheels and wheel units

2.3 Selection of lift rail

2.4 Trolley movement resistance

2.5 Engine selection

2.6 Gearbox selection

2.7 Selection of couplings

2.7.1 Selection of coupling for high-speed gear shaft

2.7.2 Selection of coupling for low-speed gear shaft

2.8 Brake selection

Literature

Summary

The course project in the discipline "lifting machines" on the topic "Calculation of a bridge crane" contains:

- sheets of graphic part 3

- sheets of design - explanatory note 43

- Figures 8

- Tables 2

The basic elements and units of the designed crane are a beam bridge, end beams, running wheels, crane movement mechanism, crane tracks, trolley movement mechanism, crane control cab, trolleys, hook suspension, drum, rope, brake.