Development of technology and equipment for welding of power transmission line support beam - diploma

Contents

INTRODUCTION

1 ANALYSIS OF THE STATE OF THE QUESTION

1.1 Description of the article

1.2 Article material and its weldability

1.3 Selection of welding method

1.4 Conclusions and setting of the task

2 PROCESS SECTION

2.1 Selection of welding materials

2.2 Technological features of article welding

2.3 Calculation of parameters of welding modes

2.4 Process of assembly and welding of I-beam of power transmission line

2.5 Quality Control

3 DESIGN SECTION

3.1 Main welding equipment

3.2 Auxiliary equipment for beam welding

4 CALCULATION OF ECONOMIC EFFICIENCY

4.1 Initial data

4.2 Determination of unit time standard for manufacturing

products

4.3 Calculation of annual scope of work time

4.4 Calculation of capital investments in equipment and equipment for annual scope of work

4.5 Determination of Investment in Manufacturing of Process Tooling

4.6 Material Cost Calculation

4.7 Calculation of payroll costs

4.8 Damping of welding equipment

4.9 Determination of energy costs for technological purposes

4.10 Calculation of equipment repair and maintenance costs

4.11 Calculation of annual economic effect

5 LIFE SAFETY

5.1 General provisions

5.2 Organization of safe operation of electrical installations. Requirements for personnel operating electrical installations. Procedure for issuing work permits for performance of works in electrical installations

5.3 Organizational measures to ensure fire safety at the enterprise in emergency situations

CONCLUSION

LIST OF SOURCES USED

APPLICATIONS

Introduction

One of the various support structures is a structural beam. It is a composite linear structural member that has a minimum of two support points (supported by both ends) and is bent. The use of the beam is primarily aimed at distributing the weight load of the entire structure. The most common use is to use a horizontal beam that compensates for the vertical transverse load. And the weight pressure of the beam itself is compensated by vertical elements, the horizontal surface of which is the support point for the beam. Subsequent compensation falls on structural supports if there are no additional intermediate elements. Thus, the mutual compensation of weight loads allows ensuring the stability and reliability of the entire structure.

In this final qualification work, the technological development of devices for welding and assembly of the power transmission line support beam is considered. The product considered in this project operates under conditions of significant alternating loads in various climatic conditions, including in conditions of the "Far North." Therefore, the welds of the article are subject to increased strength requirements.

Thus, the purpose of the project is to increase the strength and reliability of the welds of the support beam due to the application of automation and mechanization of welding operations.

Conclusion

In this work, based on the analysis of the structure and material of the support beam of the power transmission line, methods for welding an article were chosen - welding under a flux layer for longitudinal welds and welding with a melting electrode in the medium of protective gases for welding stiffeners .

In order to increase the production efficiency of the support beam of the power transmission line and to ensure an increase in the strength and reliability of welds in operation, mode calculations were made for automatic welding under the flux layer and automatic welding in the environment of protective gases, welding materials were selected. A technological process has been developed using powder wire welding, as well as means of mechanization and automation of welding operations.

Modern welding and auxiliary equipment was chosen to carry out the developed technological process.

A bench for assembling and welding the beam, an accessory for installing stiffeners have been developed.

The economic calculation of the efficiency of the new proposed technological process showed that the effect of its introduction in the first year of operation will amount to 111361.5 rubles.

An analysis of hazardous and harmful production factors was carried out and measures for organizing fire safety at the enterprise were proposed.