• CN: 11-2187/TH
  • ISSN: 0577-6686

Journal of Mechanical Engineering ›› 2023, Vol. 59 ›› Issue (3): 54-65.doi: 10.3901/JME.2023.03.054

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Many-objective Optimization Design for TriRocker Working Mechanism of Face-shovel Hydraulic Excavator

XU Gongyue1, FENG Zemin2, GUO Erkuo1   

  1. 1. School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013;
    2. School of Mechanical and Equipment Engineering, Hebei University of Engineering, Handan 056038
  • Received:2022-03-18 Revised:2022-09-14 Online:2023-02-05 Published:2023-04-23

Abstract: To solve the many-objective optimization problem of the working mechanism of hydraulic excavator, this paper researched the optimization design of new TriRocker shovel attachment by many-objective evolutionary algorithms. Firstly, the constrained many-objective optimization model of TriRocker working mechanism was established by taking the kinematic characteristics, digging forces, crowding force and the standards of digging map as the objective functions. Then, a modified constrained many-objective evolutionary algorithm was proposed with adaptive rotation-based simulated binary crossover to enhance the ability of dealing with complex constrained optimization problems and verified by the benchmark test functions. Finally, the proposed algorithm was applied in the optimization example of 70 t hydraulic excavator and compared with eight advanced many-objective evolutionary algorithms for further verification. The most satisfactory solution of hydraulic excavator was selected by technique for order preference by similarity to ideal solution. The results show that the proposed algorithm is significantly superior to other compared algorithms and could obtain the optimized scheme of TriRocker hydraulic excavator with market competitiveness.

Key words: face-shovel hydraulic excavator, TriRocker working mechanism, many-objective optimization, evolutionary algorithm, constrained optimization

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