[논문]시뮬레이션 기반의 55마력급 서보식 정유압 무단변속기 정적구조안정성 분석

원종근; 윤종일; 이현아; 정성교; 정재수

doi:10.7839/ksfc.2022.19.1.034

[국내논문] 시뮬레이션 기반의 55마력급 서보식 정유압 무단변속기 정적구조안정성 분석
Simulation Analysis on Static Safety of 55Hp-Servo-Based Hydrostatic Transmission 원문보기

드라이브ㆍ컨트롤 = Journal of drive and control, v.19 no.1, 2022년, pp.34 - 42

원종근 (Department of Industrial Innovation Strategy Lab, Korea Construction Equipment Technology Institute) , 윤종일 (Department of Industrial Innovation Strategy Lab, Korea Construction Equipment Technology Institute) , 이현아 (Department of Industrial Innovation Strategy Lab, Korea Construction Equipment Technology Institute) , 정성교 (Department of Technical Research Center, J.I Hydraulic co., Ltd) , 정재수 (Department of Technical Research Center, J.I Hydraulic co., Ltd)

Abstract ▼ AI-Helper

Hydrostatic transmission (HST) comprises rotary parts, shafts, valve plate, swashplate, and servo pistons. Ensuring structural stability of each part of an HST has a significant impact on product safety. In this study, the structural stability of HST in agricultural machinery and industrial vehicles was analyzed using ANSYS software. For conservative evaluation, high-pressure conditions (35.5 MPa and 2 MPa pilot pressure) were applied as load conditions. The number of grids used in the calculations ranged from 0.4 to 0.8 million depending on modeling requirements. Structural analysis was performed for essential parts and safety factor was analyzed. All major parts of HST had a safety factor of ≥ 1.5. Thus, they were judged to be structurally safe. This study provides important information for designing an HST system.

주제어

표/그림 (30)

그림 Fig. 1 Mechanism of HST
그림 Fig. 2 Schematic diagram of servo-based HST
그림 Fig. 3 Components of HST for structural analysis
표 Table 1 Product Specifications
그림 Fig. 4 Rigid dynamics boundary condition
그림 Fig. 5 Rigid dynamics for calculation of reaction force in shaft
표 Table 2 Material properties
표 Table 3 Part-part boundary condition
그림 Fig. 6 Assembly conditions of piston and piston shoe
그림 Fig. 7 Boundary conditions of shaft when working
그림 Fig. 8 Assembly conditions of piston and piston shoe
그림 Fig. 9 Boundary conditions of Piston and Piston shoe at work
그림 Fig. 10 Assembly conditions of cylinder block and valve plate
그림 Fig. 11 Boundary conditions of cylinder block and valve plate when working
그림 Fig. 12 Assembly conditions of feedback lever and servo piston
표 Table 4 Total force according to spring displacement
그림 Fig. 13 Boundary conditions of feedback lever and servo piston when working
그림 Fig. 14 Boundary conditions of feedback lever and servo piston when working
그림 Fig. 15 Stress concentration region of shaft
그림 Fig. 16 Stress concentration region of piston
그림 Fig. 17 Stress concentration at piston shoe when the friction coefficient is 0
표 Table 5 Structural analysis result of shaft
그림 Fig. 18 Stress concentration at piston shoe when the friction coefficient is 0.12
그림 Fig. 19 Stress concentration region of cylinder block
그림 Fig. 20 Stress concentration region of valve plate
표 Table 6 Structural analysis results of Piston and piston shoe
표 Table 7 Structural analysis results of cylinder block and valve plate
그림 Fig. 21 Stress concentration region of feedback lever and servo piston
그림 Fig. 22 Deformation of cylinder block and valve plate
표 Table 8 Structural analysis results of Feedback lever and servo piston

참고문헌 (11)

S. U. Park et al., "Development of Hydro-Mechanical Continuously Variable Transmission for Forklift," Journal of Drive and Control, Vol.15, No.1, pp.61-69, 2018.
KAMICO (Korean Agricultural Machinery Industry Cooperative), KSAM (Korea Socierty for Agricultural Machinery), Agricultural Machinery Yearbook Republic of Korea, 2019.
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상세보기
D. S. Jung et al., "Development of Hydro-Mechanical Transmission for Tractor," Journal of Drive and Control, Vol.15, No.1, pp.70-76, 2018.
H. Jung et al., "A Study on Structural Analysis for Stability Evaluation According to Design Parameters of a Fire Ladder Vehicle," Journal of the Korean Society of Manufacturing Process Engineers, Vol. 19, No. 8, pp.64-72, 2020.
C. W. Moon et al., "Fracture Prediction of Ductile Materials Using Finite Element Methods," Magazine and Journal of Korean Society of Steel Construction, Vol.19, No.3, pp.29-34, 2017.
S. W. Choi et al., "A Study on the Structural Analysis and Design Verification of Variable Swash Plate Piston Pump Case for Wheeled Armored," Journal of Drive and Control, Vol.16, No.2, pp.43-50, 2019.

원문보기 상세보기
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