초록

◦ 활용방안
- 철도차량용 공기압축기 진동저감
- 왕복동형 기계장치의 진동저감 기술 확보
- 국산 철도차량 부품 공급 중소기업의 애로기술 해소
◦ 정량적 기대효과
- 철도차량용 공기압축기 진동 10% 저감
- 진동저감에 따른 내구성 향상
◦ 정성적 효과
- 철도차량분야의 유체기계 진동저감 기술 확보
- 철도차량 진동 승차감 등 성능향상
- 철도차량 유지보수 비용 저감
- 국내외 철도차량용 공기압축기 시장 점유율 향상

Abstract ▼

Ⅱ. Purpose and Needs
The objectives of this study is to develop the core technologies of railway vehicles and infrastructures using advanced materials. The detailed objectives are as follows:
◦ Compressed air is generated mainly by rotary type and reciprocating type. In the past, reciprocatin

Ⅱ. Purpose and Needs
The objectives of this study is to develop the core technologies of railway vehicles and infrastructures using advanced materials. The detailed objectives are as follows:
◦ Compressed air is generated mainly by rotary type and reciprocating type. In the past, reciprocating type method has been mainly applied to screw type compressor among rotary type due to high vibration and generated pressure pulsation.
◦ However, screw type air compressor adopts the method of mixing lubricant in air to increase airtightness due to limit of production tolerance.
◦ This lubricant causes the phenomenon that the end of the valve or piping is caught with the foreign object, causing a malfunction or braking failure.
◦ Compared with the braking systems of competitors such as Knorr, which is the leader of the railway braking system, the use of non-lubrication type air compressors significantly reduces problems caused by lubricants. Domestic operators also prefer to use non-lubrication type air compressors to improve the utilization of maintenance.
◦ Main air compressors of railway cars are replaced by screwless type reciprocating type for ease of maintenance and maintenance, and design of low vibration is essential for reciprocating type air compressor.
◦ Existing domestic products were big complaints from the operating company due to the large vibration compared to competitive overseas products.
◦ It is necessary to develop a product that minimizes the oscillation of reciprocating air compressor. However, due to the nature of SMEs, it is difficult to research and develop because of production.
◦ The main air compressor of railway vehicles is one of the core facilities that is restricted to the operation of railway vehicles in the event of a failure.
Ⅲ. Scope and Contents
◦ Analysis of vibration level compared with international standard (ISO 10816) by vibration measurement of air compressor before improvement
◦ Study on reciprocating air compressor design data for railway cars
◦ Compressor standard and performance test method review and vibration test
◦ Analytical and 3D Modeling and Analysis
◦ Dynamic Simulation
◦ Improved design model and prototype production on Crank Shaft

목차 Contents

• 표지 ... 1제 출 문 ... 5보고서 요약서 ... 7요 약 문 ... 9SUMMARY ... 14Contents ... 16목차 ... 17제1장 연구개발과제의 개요 ... 18 제1절 연구개발 배경 및 필요성 ... 20 제2절 연구개발 목표 및 내용 ... 23제2장 기술개발 현황 ... 26 제1절 균형추의 설계 (Counter Weight Design) ... 27 제2절 3D Modeling ... 29 제3절 진동의 측정 ... 35 제4절 국제규격의 검토 ... 46부록 1. matlab code ... 52부록 2 Matlab code ... 54참고문헌 ... 60끝페이지 ... 61