The concrete mixer truck which is in charge of raw materials in civil engineering construction of the concrete loading, transport, placement, is used 6m3, 7m3 class in domestic(Korea). But in the case of the international construction fields are utilized 9m3 or above class because of the large-scale engineering and construction circumstances. In this paper, to develop a large 9m3 class mixer drum and the mixer drum in order to complement the technical and discharge that is responsible for stirring the blades by applying optimal design through implementation of the optimal shape of the concrete in the drum maintenance and placement of high-quality effects on increasing discharge such as advanced conventional drum mixer is to secure and differentiated technology. Large, heavy weight in development and uphold the drum mixer vehicle sub-frame is required to settle the design of the existing class mixer drum frames per 6m3 changed to account for changes in slope and length using CATIA V5 3D modeling work was performed.

Abstract
 1. 서론
 2. 연구 방법
  2.1 9m3급 콘크리트 믹서드럼 설계
 3. 실험결과 및 고찰
  3.1 블레이드 최적화 방안 및 최적화 수행
  3.2 블레이드 최적 설계
  3.3 서브프레임 설계 및 구조해석을 통한 안전성 검토
  3.4 9m3급 콘크리트 믹서드럼 시제품 제작
  3.5 개발 믹서드럼의 성능평가
 4. 결론
 참고문헌

• 신형곤(전북대 기계시스템 공학부) | H. G. Shin
• 최형철(전북인력개발원 컴퓨터응용금형과) | H. C. Choi
• 변동해(폴리텍V대학 김제캠퍼스 컴퓨터응용기계과) | D. H. Bean
• 김영철(군산대 기계자동차공학부) | Y. C. Kim