Crane Design on Column

Contents

Contents

PAPER

Introduction

1. Purpose and scope of crane application

2. Design of lifting mechanism

2.1 Selection of polyspast scheme

2.2 Selection of electric motor

2.4 Drum calculation

2.5 Hook Selection

2.6 Unit calculation

2.7 Determination of drive ratio

2.8 Gearbox calculation

2.9 Coupling Selection

3. Steel Structure Calculation

3.2. Calculation of bearings of support-rotary device

3.3 Layout of support-swivel device

3.4 Sleeve Strength Calculation

Conclusion

LIST OF SOURCES USED

APPENDIX A

Paper

The course work contains 3 sheets of drawings of A1 format, calculation and explanatory note on s., including 8 Fig., 0 Table, 5 literary sources, 1 Appendix.

DESIGN OF CRANE STRUCTURE ON COLUMN

The design object is a crane on a column

The purpose of the work is to design the main components of the crane (lifting mechanism, support units) and the structure of the crane itself.

During the course design process, the following were developed: lifting mechanism, metal structure, support units.

As a result of the design, design decision-making skills were gained, and knowledge on the calculation of typical mechanisms and structures was consolidated.

Main design and technical performance indicators:

Lifting capacity: Q = 1 t

Lifting height: H = 3.2 m

Lifting speed: V = 6.3 m/min

Boom flight: L = 3.6 m

Operating mode: M4

PV: 15%

Crane efficiency:

The crane was designed according to the requirements of reliability and operability, the features of the typical loading mode during calculations were also taken into account. It has a large degree of unification.

Introduction

The purpose of the course work is to obtain skills in making structural decisions, assimilate the sequence of development of crane mechanisms, metal structures and support units, and fix the training material on the calculation of standard mechanisms.

The objective of the project is to develop an electrified full-turn crane on the column.

The crane consists of: lifting mechanisms, turning, metal structure and support units.

The mechanisms are calculated in the following order: the engine is selected by power, then - a reduction gear, which is checked by nominal torque, then the brake is selected by braking torque, after which the couplings are selected. Steel structure is calculated by strength and rigidity. When calculating support units, reactions of bearings are found, by which bearings are selected.

As a result of the work, the design of an electrified full-turn crane on the column should be obtained.

Purpose and scope of crane

The crane on the column is used for the movement of goods in production and construction. The advantage of cantilever rotary cranes: do not occupy the floor area (mounted on existing supports of workshops capable of carrying mechanical load). Very often, a cantilever crane is used to service local storage areas or workplaces in workshops or workshops. In this case, the employee receives a suitable lifting device that allows him to move or hang goods and parts directly in his area without involving any other lifting devices. For example, it is not necessary to fit a goat crane or a bridge to hold some equipment on the weight, to work with it, thereby stopping the work of the entire workshop or workshop for several hours. In addition, the cantilever crane does not take up much space. When it is not needed, the crane console can be turned along the wall, and then its presence will not affect the useful space in any way.

Design of lifting mechanism

Lifting capacity: Q = 1 t

Lifting height: H = 3.2 m

Lifting speed: V = 6.3 m/min

Boom flight: L = 3.6 m

Operating mode: M4

Conclusion

When working on coursework, knowledge of methods for calculating mechanisms and cranes support units was fixed, and decision-making skills were obtained when composing mechanisms.

As a result of calculations, the proper level of reliability of all crane units and parts was ensured. Bearings are selected according to the load acting on them. The steel structure was calculated for stiffness and strength, as a result of which it was obtained that the steel structure provides sufficient operational characteristics of the crane.