Technical Service Enterprise Design Course Project

Contents

Contents

p

Introduction

1. Description of the design object and analysis of its operation

2. Defining the Annual Production Program of an Enterprise

2.1 Calculate the number of maintenance and repairs

2.2 Calculation of additional works scope

3. Determination of the item of workshops and branches of the enterprise

4. Justification of operating modes and determination of time funds

5. Calculation of manpower

6. Justification of repair process organization method

7. Calculation of number of posts, lines for repair, workplaces

8. Selection of process equipment

8.1 Selection of welding equipment

8.2 Selection of metal cutting equipment

8.3 Selection of blacksmith equipment

8.4 Calculation of number of benches for engine running-in and testing

9. Calculation of enterprise space. Equipment arrangement

9.1 Calculation of production areas

9.2 Calculation of auxiliary rooms

10. Development of the plant layout

11. Schedule the shipments of the enterprise

12. Safety, Environmental Project Requirements

13. Calculation of energy costs of the enterprise

13.1 Lighting calculation

13.2 Calculation of artificial lighting

13.3 Heating Calculation

13.3 Ventilation Calculation

13.4 Calculation of electric power

14. Technical and economic assessment of the enterprise

Conclusion

Bibliographic list

Application

Introduction

Of great importance is the improvement of the quality and reliability of the manufactured machines, the level of their technical re-equipment and repair, including the organization and design of repair and maintenance production. It is necessary to reduce equipment repair costs due to: improving the quality and reliability of major and current repairs of machines and high-quality restoration of worn-out parts, preventing wear and failure of machines based on the use of diagnostic and maintenance methods directly in the places of machine operation, increasing labor productivity and resource saving during maintenance and repair of machines. The organization of labor, reasonable rationing and remuneration, ensuring technological discipline and technical quality control of repairs are important.

The main and most effective measure to keep the machines in working condition is the planned preventive maintenance system using means and methods of technical diagnostics. The high level of working condition of the machine-tractor fleet and reduction of spare parts consumption are achieved under the condition of high-quality maintenance and repair of machines, which, in the conditions of complex mechanization of agricultural production, is one of the conditions for the successful operation of agricultural machinery and ensures the performance of agricultural work in the optimal agrotechnical time.

Description of the design object and analysis of its operation

The developed technical service enterprise is intended for maintenance and ongoing repair of K701, T150K energy-saturated tractors, as well as tractors MTZ Belarus, etc., based on the replacement of their units, as well as not complex agricultural ones. cars .

Those. The repair process is as follows:

Tractors from the parking area after external cleaning go to the diagnostics area and, depending on the technical condition, are sent to the maintenance area or to the maintenance and troubleshooting area. The section of routine repair and rectification of faults of units and units includes cleaning stations, work places for disassembly and assembly of engine, gearbox and bridges, as well as bus-mounting station.

Parts delivered to the defect area are sorted into suitable, requiring restoration and waste. Such batches are sent to the respective recovery areas and after recovery are transferred to the picking area [5].

The necessary equipment for welding, polymer repair, and machining shall be available to restore the parts. The test shall be carried out on stands located in soundproofed rooms.

Determination of the item of workshops and branches of the enterprise

The annual repair program of the farm calculated in section 1 is distributed to the places of its implementation. The places of execution are: specialized enterprises of Agroprom, workshop of the farm.

In the workshops of Agroprom, we plan to carry out all major repairs of complex machine intractors, combines, cars.

The programme in the CLD includes the following activities:

TR tractors, combines, cars and simple s/x. machines;

-TO-3 tractors;

-MZHF equipment maintenance works;

- works on manufacturing and repair of tools;

- repair of own equipment of the workshop;

- part recovery works;

- other unaccounted works.

To carry out this program, the following areas are required: external cleaning, repair installation, cleaning of parts, assemblies and units, engine repair, mechanical mechanics, engine running-in, fuel and hydraulic equipment repair, charging of accumulators, paint, blacksmithing, instrument, compressor, diagnostics of tractors and cars.

We distribute the entire volume of repair work in the CMM so as to fulfill two main following requirements:

1. The loading of the workshop for each month of the year should be approximately the same. Reduction of the load in summer months is allowed to 3040% of the load in winter.

2. The loading of the repair shop by various types of repair work for the months of the year should be uniform, this allows to maintain a permanent staff of the main repair workers. Unevenness up to 30% is allowed.

Load distribution by month of year. We distribute, adhering to the following basic considerations:

-the current repair of tractors is mainly planned in the months of winter, batches of the same type of machines, in some cases it is permissible in summer.

-combines are planned for repair in autumn-winter and spring.

- cars mainly during the year, but a larger volume is allowed in the spring-autumn period.

-TO-3 tractors are planned during the year taking into account the loading of machines of specific brands in field work.

works related to repair of s/x. machines are planned taking into account the loading periods of these machines in field work.

Justification of operating modes and determination of time funds

The operating mode of the enterprise includes: the number of working days per year, the number of working shifts per day, the duration of each shift in hours. Usually, repair and maintenance facilities do not belong to continuous production. In this case, the estimated number of working days in the year is equal to the number of calendar days minus weekends and holidays.

The number of work shifts depends on the production program, output, equipment load and other factors. We organize the work of the designed repair enterprise in one shift.

The duration of the work shift depends on the condition and schedule of the enterprise. In our country, the working week for workers and employees working in normal conditions is 41 hours, the duration of each shift at a five-day week and two days off for workers working in normal conditions is 8.2 hours.

There are nominal and valid annual funds for the time of workers and equipment.

Justification of repair process organization method

For the work of the designed repair plant, the aggregate method is used because it is most effective for repairing machines operating in harvesting complexes and due to a large production program. The aggregate method (GOST 1832278) [3, p.79] is a repair method in which faulty units are replaced with new or previously repaired ones. The aggregate method drastically reduces the downtime of the machine in repair. The whole process is reduced to disassembly and assembly work related to the replacement of the unit. To be able to use the aggregate method, it is necessary to have an appropriate number of spare parts and units. This revolving fund is used in farms to replace worn-out units and complete groups on machines undergoing ongoing repairs in workshops, in specialized repair enterprises as a backbone for the uninterrupted and continuous operation of the enterprise .

With the aggregate method, the duration of the machine's stay in repair is significantly reduced, quality is improved and the cost of repair in the workshops is reduced.

In enterprises, an aggregate flow method is used in which the machine being repaired is disassembled and assembled at specialized workplaces of flow lines with a certain technological sequence and rhythm. Repair, assembly and run-in lines of units shall be arranged in process sequence.

Schedule cargo flows

Cargo flow schedules are built to verify the correct layout of workshops on the general plan and sections on the plan of the production building, that is, to monitor the observance of the basic principle - the choice of the shortest way of movement of repair objects, materials and spare parts. At the same time, oncoming and intersecting cargo flows are detected .

To plot, you select a machine of the same brand, but which has the maximum volume of repair work in the busiest month. Freight flow lines or bands show the movement of goods and their width shows the mass on an appropriate scale. The band width scale is assumed to be 100 kg/mm.

The width of the strips in the sections is taken as a percentage of the width of the strip of the total mass of the machine (unit) or, on a accepted scale, the strips corresponding to the weights entering the sections of Table 11 are deposited.

(Appendix A). Strips are connected to each other in accordance with accepted scheme of technological process of object repair, direction of cargo movement is indicated by arrows. The strips indicate the mass of transported goods or the percentage of the total mass of the repair object .

The drawn up schedule (diagram) of cargo flows allows not only to correctly assemble all divisions of the production building, but also to select the necessary lifting and vehicles.

Safety, Environmental Project Requirements

Any technical service enterprise must meet certain requirements [3] that require the safe operation of personnel, the safety of equipment, and also must not harm the environment. These are safety requirements: STO compliance with SNiP requirements, provision of fire safety measures in accordance with applicable norms and regulations, Ensuring sanitary standards and requirements in accordance with applicable norms and regulations, availability of documentation and systematic training of personnel on safety, compliance with labor and recreation legislation, duration of work shift and work week, availability of staff rest and meals facilities, compliance with lighting standards in production premises, ensuring MPC standards of harmful substances in premises, provision of temperature conditions in rooms, quality and condition of floor coverings in rooms, the presence of plenum ventilation and devices for removing the exhaust gases of cars from the premises, technical condition of equipment, accessories and tools used for maintenance and repair of vehicles, the use of individual means of protection by personnel, the availability of emergency kits for staff and customers, as well as information on cases of industrial injuries at STOA.

Also, enterprises must meet environmental requirements:

1) Availability of cleaning facilities for machines, units and parts ;

2) System availability:

- rotary water supply and recycling of detergent solutions ;

- cleaning and recycling of atmospheric emissions ;

- collection and disposal of spent oils, fuel, technical liquids;

- collection and disposal of storage batteries and electrolytes ;

- collection and disposal of rubber products;

- assembly and disposal of parts, units and machines .

3) Availability of cleaning facilities for machines, units and parts ;

4) Compliance with environmental requirements of vehicles leaving STOA.

Conclusion

During the work on the course project on the topic: "Design of technical service enterprises," the annual production program of the enterprise was determined, the total labor intensity of the work was calculated, which amounted to 10061 people. The operating mode of the enterprise was determined: the number of working days in the year was 253 days, the number of working shifts per day, 1 shift duration - 8.2 hours, the nominal fund of working time was 2070 hours, the actual - 1997 hours, the actual fund of equipment was 1966 hours. The number of personnel was 8 hours. The aggregate method of organizing the technological repair process was justified. The number of jobs was calculated, which amounted to 20 places, the length of the design line for repair was 52m. Process equipment was calculated and selected. The area of ​ ​ the enterprise was 1248 m2. The layout of the enterprise with direct cargo flow was developed and its schedule was built. Measures to improve working conditions and safety of life have been developed. Measures to reduce environmental pollution have also been developed. The energy costs of the enterprise were calculated.

In the final part of the project, the technical and economic assessment of the enterprise was carried out - the profit per year amounted to 19572301.0 rubles, and the assessment of the payback of the project, which amounted to 2.1 years. The project consists of 28 sheets of an explanatory note, 20 sheets of the annex and two sheets of the graphic part.

Bibliographic list

1 Aliyev I.I. Reference Book on Electrical Engineering (4th ed., Reprocessing. and additional )/Series "Directories." - Rostov: Phoenix, 2003. – 480 pages.

2 Babusenko S.M. Design of repair and maintenance enterprises. -2nd

ed., Rework. and Appendix M: Agropromizdat, 1990.352 s

3 Varnakov V.V., Streltsov V.V., Popov V.N. and others. Technical service of agricultural machines. -M: KolosS, 2003.253 p.

4 Kurchatkin V.V., Golubev I.G. and others. Installation, operation and repair of process equipment. - M: KolosS, 2007.- 424s.

5 Kurchatkin V.V. Equipment of repair enterprises. -M.: Kolos, 1999.232 p.

6 Kurchatkin V.V., Telnov N.F., Achkasov K.A. and others. Reliability and repair of machines. - M.: Kolos, 2000.- 776 s.

7 Kurdyumov V.I., Zotov B.I. Safety of life activities in the production.-

2nd ed., Redesign. and supplement - M.: KolosS, 2003.- 263 s.

8 Gray I.S., Smelova A.P. and Cherkun A.V. - 4th ed., Conversion. and additional -M.: Agropromizdat, 1991.-184 p.

9 Engineer's handbook on technical service of machines and equipment in the agro-industrial complex. - M.: FSNU "Rosinformagrotech," 2003. - 604s.