Design of cantilever rotary crane Q = 5t

Contents

Contents

1. Load lifting mechanism

1.1. We specify the initial conditions

1.1.1. Select mechanism kinematic scheme

1.1.2. Selection of polyspast type and multiplicity

1.2. Definition of items polyspast

1.3. Calculation and selection of rope

1.4. Hook suspension selection

1.5. Defining Upper Block Parameters

1.6. Sizing Drum Installation

1.7. Electric motor selection

1.8. Gearbox selection

1.9. Selection of couplings

1.10. Brake selection

1.11. Calculation of upper block axis

1.12. Upper Block Bearings Selection

1.13. Attachment of rope ends to drum

1.14. Calculation of drum axis

1.15. Select drum axis bearings

1.16. Calculation of bolts

2. Trolley movement mechanism

2.1 Selection of mechanism kinematic diagram

2.2 Determination of static loads on running wheels

2.3 Selection of running wheels

2.4 Selection of lift rail

2.5 Determination of traction rope tension

2.7 Electric motor selection

2.8 Check of ram traction capacity

2.9 Gearbox selection

2.9 Selection of couplings

2.10. Determination of brake torque and selection of brake

2.11. Calculation of running wheels

3. CALCULATION OF CRANE TURNING MECHANISM

3.1 Calculation of bearings of column supports

3.2 Moment of crane turning resistance

3.3. Electric motor selection

3.4. Determination of gear ratio

and gearbox selection

3.5 Coupling Selection

3.6 Calculation of turning mechanism start-up process

3.7 Calculation of braking process

3.8 Calculation of open gear train

List of literature

Determination of brake torque and selection of brake

According to the BP on the selection of brakes: "A crane designed for indoor work and moving at a speed of less than 32 m/min does not need to install the brake"