
Virtual Equipment Maintenance Disassembly Sequence Planning with the Application of Jack
YE Lin, SHEN Yan-an
Virtual Equipment Maintenance Disassembly Sequence Planning with the Application of Jack
Virtual disassembly as the burgeoning means of maintenance technology, existing deficiencies in maintenance disassembly process planning. To handle this problem, this paper introduces interpretative structural model on the basis of Petri-net, and constructs Virtual Disassembly Interpretative Structural Model Petri-net, which is constructed to realize the subsystem division and hierarchical division of complex equipment components. Taking the ergonomic factors as the basic constraints of the disassembly process, this paper realizes the definition, evaluation and secondary development for the ergonomics indexes with the platform of Jack, which improved the description of maintenance disassembly process; combined with genetic algorithm,efficiently it achieves the virtual maintenance disassembly sequence intelligently planning for a certain type of gearbox.
Interpretative Structural Model; Petri-net; ergonomics; virtual maintenance; sequence planning {{custom_keyword}};
表1 VDISMPN的要素组成 |
要素 | ![]() | ![]() | ![]() | W(pi,tj)弧权值 |
---|---|---|---|---|
约束 关系 | ![]() | ![]() |
表2 维修活动可达范围评价 |
关节 | 有效范围 | 舒适范围 |
---|---|---|
肩关节(θ4) | -45°~+180° | +15°~+35° |
肩关节(θ5) | -40°~+140° | +40°~+90° |
肘关节(θ7) | 0°~+145° | +10°~+85° |
表3 维修活动可视范围评价 |
参数名称 | 有效范围 | 舒适范围 |
---|---|---|
视距/mm | +120~+1500 | 250~+500 |
水平视角/° | ±0~35 | ±3~15 |
垂直视角/° | ±0~35 | ±3~25 |
表4 基因编码形式 |
x1 | 1 | 2 | … | L |
---|---|---|---|---|
x2 | - | R1 | … | RL-1 |
x3 | - | Z1 | … | ZL-1 |
表5 VDISMPN模型变迁及层级 |
层级 | 变迁 | 含义 |
---|---|---|
Ⅰ | T00~T06 | 空变迁 |
T25 | 拔出变速齿轮 | |
Ⅱ | T4,T20,T23 | 摘取轴承 |
Ⅲ | T3,T7,T21 | 取下密 封垫圈 |
T2,T5,T22 | 拆卸限位环 | |
T1,T6 | 拆卸传动杆 | |
Ⅳ | T24 | 取下顶盖 |
Ⅴ | T8,T9,T10,T11 | 拆卸六角头螺母 |
T12,T13 | 拆卸沉头螺母 | |
T14 ~T19 | 拆卸弹性垫圈 |
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