Tower crane 2.5 tons

Contents

1. Job for Course Project

2. Definition of basic parameters of small tower crane

3. Determination of tower crane weight and its elements based on its stability: 

  3.1 Determination of approximate mass of tower crane elements

  3.2 Determination of static moments of the crane

  3.3 Determination of wind loads on the crane

  3.4 Determination of inertial moments and loads

  3.5Defining Crane Cargo Stability Factor

4. Boom Design

5. Calculation of load lifting mechanism

6. Electric motor selection

7. Gearbox selection

8. Brake selection

9. Calculation of crane movement mechanism

  List of used literature

  Application

Job for Course Project

Design tower crane:

crane with rotary tower and lattice boom;

change of departure by boom lifting;

the valve operation mode is moderate.

Crane movement - frame on rail.

Crane lifting capacity 2.5 t.

The departure is the largest 15 m.

Lifting height 15 m.

Rotation speed of the rotary part is 1 rpm.

Load lifting speed is 0.4m/s.

Change of departure 0.2m/s.

Crane movement is 0.4m/s.

Determination of tower crane weight and its elements based on its stability

Stability of the crane against overturning is ensured only by its own weight, which forms the holding moment. The remaining forces extending beyond the crane support contour provide an overturning moment. The ratio of the holding moment to the tipping moment shows the degree of stability of the crane.