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Article Navigation> JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY> 2019> 28(4): 799-810
Ruqi Ding, Sheng Wang, Ying Wei, Leping Cai. Analysis and Optimization of Inside-Cushion Structure in High-Speed Hydraulic Cylinders[J]. JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2019, 28(4): 799-810. doi: 10.15918/j.jbit1004-0579.18136
Citation: Ruqi Ding, Sheng Wang, Ying Wei, Leping Cai. Analysis and Optimization of Inside-Cushion Structure in High-Speed Hydraulic Cylinders[J].JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2019, 28(4): 799-810.doi:10.15918/j.jbit1004-0579.18136
shu

Analysis and Optimization of Inside-Cushion Structure in High-Speed Hydraulic Cylinders

doi:10.15918/j.jbit1004-0579.18136
  • 1.

    Key Laboratory of Conveyance and Equipment, Ministry of Education, East China Jiaotong University, Nanchang 330013, China

  • 2.

    Jiangxi Tianxin Metallurgical Equipment Co. Ltd, Nanchang 330000, China

  • 3.

    Shanghai Marine Equipment Research Institute, Shanghai 200031, China

  • Received Date:2018-10-20
    Abstract
  • An inside-cushion structure with sidestep and taper-shaped plungers is studied to address the problems of high impact and vibration in high-speed hydraulic cylinders. First, the three stages of cushion processes are discussed according to the varying flow area as the piston moves. Then, to establish a precise mathematical model, the states of the flow field are estimated in terms of the Reynolds number. Accordingly, the simulation model parameterized against measured data is developed and verified by experiment. Last, the average velocity, peak cushion pressure, and terminal velocity are defined to evaluate cushion performance. According to these optimized objectives, the non-linear programming by quadratic Lagrange (NLPQL) algorithm is applied to optimize the structure parameters. The optimization results indicate that the peak cushion pressure is reduced by 28% and terminal velocity is reduced by 21% without reduction of average velocity.
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    • References (17)
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