Modernization of the bridge crane in order to increase its carrying capacity - course

Contents

Introduction

1. Design Part

1.1. Calculation of load lifting mechanism

1.2 Calculation of trolley movement mechanism

1.3 Calculation of crane movement mechanism

1.4 Calculation of trolley frame

1.5. Bridge calculation

1.6 Conclusion on calculations

2. Process Part

2.1 Service purpose and part processability analysis

2.2 Definition of production type

2.3 Optimization of procurement type

2.4. Designing a Processing Route

2.5 Calculation of allowances

2.6 Optimization of cutting mode parameters

2.7 Technical rationing

3. Economic part

3.1 Basic Equipment Cost Calculation

3.2 Determination of capital investments

3.3 Calculation of costs for new equipment

3.4 Determination of unit cost

3.5 Calculation of annual economic effect

3.6 Determination of Capital Efficiency Factor

investments

3.7 Measuring Productivity Growth

4. Safety of life

4.1 Brief description of the building and premises,

work performed, workplace and environment

4.2 Analysis of existing hazardous and harmful factors

4.3 Measures to protect against hazardous and harmful factors

4.4 Instruction for crane operators (drivers) on safe operation of bridge cranes

Conclusion

Literature

Applications

Conclusion

The calculation of mechanisms and steel structures of the bridge crane with a lifting capacity of 8 tons showed that to increase the lifting capacity of the crane to 10 tons, the following measures should be carried out:

a) strengthen the upper and lower belts of the main beams of the bridge with additional sheets of 6 mm thickness;

b) a reducer of the mechanism of raising of RM - 65Q to replace with RTsD750 reducer;

c) install cargo suspension with load capacity of 10 t;

d) replace cargo rope 17G1LK01764 GOST 337780 with rope 18.0G1LKR1960 GOST 268880;

e) replace the axis of the drum, making it from 40X steel.

Increase of crane lifting capacity does not lead to reinforcement of crane track, since the pressure of the running wheel on the crane track, taking into account the restriction of the trolley approaching the crane track axis by 500 mm, is 148.38 kN and does not exceed the pressure of 150 kN specified in the certificate.