Journal of Jilin University(Engineering and Technology Edition) ›› 2020, Vol. 50 ›› Issue (2): 454-463.doi: 10.13229/j.cnki.jdxbgxb20181152

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Design and dynamic characteristic simulation of pantograph⁃catenary continuous energy system for pure electric LHD

Yin-ping LI(),Tian-xu JIN(),Li LIU   

  1. School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China
  • Received:2018-11-20 Online:2020-03-01 Published:2020-03-08
  • Contact: Tian-xu JIN E-mail:liyinping0001@163.com;13810319966@163.com

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Abstract:

In order to recharge pure electric Load-Haul-Dump (LHD), a pantograph-catenary continuous energy charging system is proposed. The pantograph-catenary continuous energy system parameters, such as pantograph-catenary structure, bow head trajectory, bow angle and balance bar angle, are designed according to the pantograph dynamic characteristics and working conditions between pantograph and roadway. Based on the established pantograph dynamics calculation model, combined with the multi-objective optimization algorithm, the 10t pure electric LHD pantograph is designed. Based on the nonlinear finite element theory, the finite element model of the pure pantograph-catenary system of LHD is established. The dynamic simulation and verification analysis of pantograph-catenary current were carried out through MARC software. The results show that the pantograph-catenary continuous system can complete the pure electric LHD continuous charge in only 12.5 s under the premise of ensuring the safe operation of the LHD, which improves the efficiency of LHD operation and can be widely generalized.

Key words: vehicle engineering, pure electric load-haul-dump, pantograph-catenary continuous energy system design, multi-objective optimization algorithm, dynamic current collection performance, MARC finite element simulation

CLC Number: 

  • U469.72

Fig.1

Schematic diagram of geometry parameters of special pantograph for pure electric LHD"

Fig.2

Schematic diagram of special catenary structurefor pure electric LHD"

Table 1

Pantograph structure parameters optimization result table"

设计变量优化初始值优化结果
L1/mm 1 7331 750
L2/mm 1 8351 800
L3/mm 388230
L4/mm 1 1071 208
L5/mm 1 5621 750
L6/mm 1 8591 810
L7/mm 118118
a/mm 768770
b/mm 134140
c/(°) 0.330.35
g/(°) 0.0290.017

Fig.3

Vertical trajectory of pantograph head changes with angle of rising pantograph"

Fig.4

Modeling and simulation flow chart of pantograph-catenary continuous energy system"

Fig.5

Finite element model of pure electric LHD catenary system"

Table 2

Geometrical parameters and material character-istics of catenary system"

组成结构拉伸模量/GPa泊松比密度/(kg·mm -3) 截面面积/(mm·mm)材料
接触线1200.338 900150AgCu110
承力索1200.338 900150JTMH120
吊弦1200.338 90010铜镁合金
定位器2100.302 7002 700铝青铜
斜臂杆2100.307 8505 026耐蚀钢

Fig.6

Simulation function diagram of spring stiffness for time"

Fig.7

Finite element model of pantograph of pure electric LHD"

Fig.8

Direct constraint contact algorithm analysis flow chart"

Fig.9

Finite element coupling model of pantograph-catenary continuous system"

Fig.10

Gravity applied process map"

Fig.11

Curve contact pressure of pantograph-catenary"

Fig.12

Curve of dynamic uplift"

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