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Kinematics and Structural Analysis for 5ton cargo-truck Elecrto-Hydraulic Sliding Deck Systems Manufacturing and Design of winch system for safety

5ton 카고트럭의 전동 유압 슬라이딩 데크 시스템 개발을 위한 기구학 해석 및 전산구조해석과 안전을 위한 윈치 시스템 설계

  • Kim, Man-Jung (Mechanical Systems Engineering, Chonbuk National University) ;
  • Song, Myung-Suk (Mechanical Systems Engineering, Chonbuk National University) ;
  • Kim, Jong-Tae (Mechanical Systems Engineering, Chonbuk National University) ;
  • Ryuh, Beom-Sahng (Automotive New Technology Research Center, Chonbuk National University)
  • 김만중 (전북대학교 기계시스템공학과) ;
  • 송명석 (전북대학교 기계시스템공학과) ;
  • 김종태 (전북대학교 기계시스템공학과) ;
  • 유범상 (전북대학교 자동차 신기술 연구센터)
  • Received : 2019.01.28
  • Accepted : 2019.05.03
  • Published : 2019.05.31

Abstract

In this paper, the basic design of the electric hydraulic sliding deck system was developed to develop the electric hydraulic sliding deck which can easily upgrade the loading and unloading of the agricultural machinery by modifying the load of the existing 5ton cargo truck. Through the kinematic analysis, The length and structure of the specimens were designed and the materials were selected for safety and economical efficiency through structural analysis. For the basic design of the sliding deck system, we surveyed the agricultural machinery to be transported and selected necessary elements. And have devised a system using a hydraulic cylinder that can meet selected factors. Through the simplified modeling and kinematic diagram, the operating structure of the sliding deck system was grasped and the minimum length and structure of the sliding deck were devised, In order to select the sliding deck material satisfying, four representative materials used in the automobile structure were selected. Selected the parts to be analyzed and compared the stresses and deformation amounts according to the material under the conditions of maximum load through simplified modeling. As a result, SS41P material was used to reduce the unit cost and to achieve safety. The winch system was designed and applied for moving up and down of the farm machinery which can not be operated.

본 논문은 기존 5ton 카고 트럭의 적재함을 개조하여 농기계의 상, 하차를 손쉽게 할 수 있도록 하는 전동 유압 슬라이딩 데크를 개발하기 위하여 전동 유압 슬라이딩 데크 시스템의 기본 설계를 수행하였고, 기구학적 해석을 통하여 슬라이딩 데크의 길이와 구조를 고안 하였으며, 구조해석을 통하여 안전성과 경제성을 고려한 재질을 선정하였다. 먼저 슬라이딩 데크 시스템의 기본 설계를 위하여 운송 대상 농기계를 조사하였고, 필요한 요소들을 선정하였다. 선정한 요소들을 충족시킬 수 있는 유압실린더를 이용한 시스템을 고안하였다. 단순화 모델링과 기구학적 다이어그램을 통하여 슬라이딩 데크 시스템의 작동 구조를 파악하였으며, 기구학 해석을 통해 슬라이딩 데크의 최소길이와 그 구조를 고안하였다. 안전성과 경제성을 모두 만족하는 재질을 선정하기 위하여, 자동차 구조물에 사용되는 대표적인 4가지 재질을 선정하였다. 해석이 필요한 부분을 선정하고, 단순화 모델링을 통해 최대하중을 받는 조건에서 재질에 따른 응력과 변형량을 비교하였다. 그 결과 SS41P 재질사용하면 단가를 줄이고 안전성을 만족하는 결과를 얻을 수 있었다. 작동이 불가능한 농기계의 상, 하차를 위하여 윈치 시스템을 설계하고 적용하였다.

Keywords

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Fig. 1. 5ton truck (a)safety-loader (b)cargo-truck loading

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Fig. 2. Farm machinery accident

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Fig. 3. concept design of sliding deck system

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Fig. 4. Geometric expression of sliding deck system

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Fig. 5. Geometric diagram of sliding deck system

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Fig. 6. 2step sliding deck

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Fig. 7. 5ton sliding deck 3D model(a)Full-view (b)Front-view (c)Back-view(↖)Force direction

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Fig. 8. Analysis part of sliding deck(a)Deck part 1 (b)Deck part 2 (↖)Forcedirection

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Fig. 9. Out trigger 3D model (a)1 part out trigger (b)4 part put trigger

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Fig. 10. mash of analysis part(a)1 Part sliding deck (b)2 Part sliding deck(c)Deck-pin 1 (d)Deck1-pin2 (e)Deck2-pin3(f) Out trigger 1Part (g) Out trigger 4 Part

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Fig. 11. Part Weight Point(a)sliding deck (b)Deck-pin 1 (c)Deck1-pin2(d)Deck2-pin3 (e) Out trigger (↖)Force direction

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Fig. 12. result of analysis part (a)1 Part sliding deck (b)2 Part sliding deck (c)Deck-pin 1 (d)Deck1-pin2 (e)Deck2-pin3 (f) Out trigger 1Part (g) Out trigger 4 Part

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Fig. 13. Winch kinematic model

Table 1. Survey of 5ton farm machinery data

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Table 2. Link and Joint in Fig. 5

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Table 3. 5ton cargo-truck spack(KIA RHINO)

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Table 4. Material property

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Table 5. Part Element

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Table 6. Analysis result

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Table 7. Winch spc.

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Table 8. 7X19 Wire rope Minimum breaking load

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Table 9. Wire length

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