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Comprehensive optimum and adaptable design methodology for the working mechanism of a wheel loader

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Abstract

The working mechanism is an important part of a wheel loader. It is used to accomplish the shoveling, loading, lifting, and dumping tasks. Usually, the working mechanism is a Z-bar linkage and the dimensional design of the linkage directly affects the loader’s service performance, such as dumping clearance and dumping height. As there are many other performance indexes and various field requirements for the loader, comprehensive optimum, and adaptable design methodology with full-parameterized kinematic model attracts engineers’ research interests. Focusing on the multi-objective and multi-variable problems, this paper firstly establishes an accurate and simplified kinematic model of the Z-bar linkage with deduced expression of the basic parameters, and then investigates the performance indexes including mechanism transmission ratio, lifting stationary, dumping angle in any position, bucket flat setting, and extreme transmission angle, etc. With the full-parameterized kinematic model and the optimum algorithm, modified complex method, a comprehensive and adaptable design platform is built to solve the multi-objective and multi-variable problems of the Z-bar linkage. A case study with two optimization schemes as “full variables design” and “partial variable design” is conducted. The simulation results show that both schemes are better than the original one. The methodology and platform in this paper are of importance in generating user requirement oriented linkage design schemes with enough consideration and optimization of multiple performance indexes.

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Authors and Affiliations

  1. Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education, Tianjin University, Tianjin, 300350, China

    Zhizhong Zhang & Baiyan He

  2. Tianjin University, 135 Yaguan Road, Haihe Education Park, Jinnan District, Tianjin, 300350, People’s Republic of China

    Baiyan He

Authors
  1. Zhizhong Zhang
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  2. Baiyan He
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Correspondence to Baiyan He.

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Zhang, Z., He, B. Comprehensive optimum and adaptable design methodology for the working mechanism of a wheel loader. Int J Adv Manuf Technol 94, 3085–3095 (2018). https://doi.org/10.1007/s00170-016-9312-y

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  • DOI: https://doi.org/10.1007/s00170-016-9312-y

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