Design and physical model experiment of an attitude adjustment device for a crawler tractor in hilly and mountainous regions
Autor: | Meng Chong, Yang Fuzeng, Zhang Yanjie, Sun Jingbin, Chu Guoping, Zhang Yazhou, Liu Zhijie |
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Jazyk: | angličtina |
Rok vydání: | 2020 |
Předmět: |
Tractor
business.product_category Computer science 020209 energy Mechanical analysis 02 engineering and technology Hill crawler tractor Aquatic Science 01 natural sciences Stability (probability) Stress (mechanics) Software Position (vector) 0202 electrical engineering electronic engineering information engineering Physical model experiment Total least squares lcsh:Agriculture (General) Attitude adjustment lcsh:T58.5-58.64 business.industry lcsh:Information technology 010401 analytical chemistry Work (physics) Forestry Structural engineering lcsh:S1-972 0104 chemical sciences Computer Science Applications Mechanism (engineering) Animal Science and Zoology business Agronomy and Crop Science |
Zdroj: | Information Processing in Agriculture, Vol 7, Iss 3, Pp 466-478 (2020) |
ISSN: | 2214-3173 |
Popis: | To address the problems of difficult leveling and poor stability of hill crawler tractors, an attitude adjustment device based on a parallel four-bar mechanism was designed, and the mechanical reasons for the sideslip instability of hill crawler tractors were analyzed. On this basis, a posture adjustment mechanism based on a parallel four-bar mechanism was proposed, and the structure of the complete attitude adjustment device was designed. To ensure that this device meets the strength requirements during operation, a mechanical analysis of the key components (active rocker and slave rocker) was carried out to accommodate the load during leveling. Based on ANSYS software, a finite element simulation analysis was used to determine the maximum stress position of the active and slave rockers. Finally, to verify the accuracy of the above simulation analysis results and determine the influence rules of the lateral slope angle, longitudinal slope angle and loading quality on the abovementioned maximum stress, a physical model test bench of the attitude adjustment device was built. An orthogonal regression experiment was carried out with the maximum stresses of the active and slave rockers as the test indices. The experimental data were analyzed by Design-Expert 10 software, and the results show that the order of the primary and secondary factors influencing the maximum stress of the active rocker was the loading mass, lateral slope angle and longitudinal slope angle. The order of the factors influencing the maximum stress of the slave rocker was the longitudinal slope angle, lateral slope angle and loading mass. The active and slave rockers meet the strength requirements. This work provides technical support for the production of hill crawler tractor physical prototypes. |
Databáze: | OpenAIRE |
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