摘要
气垫悬浮搬运系统具有承载能力大、占用空间小、不损伤地面等优势,但是搬运过程中由于地面不平整而强烈影响搬运性能。采用理论、仿真与实验的方式,建立了多孔气垫悬浮流场模型,提出了过障稳定性评估系数,研究了气室结构、离地间隙和地面沟槽对气垫搬运稳定性、气垫承载能力和过障能力的影响规律。分析结果表明,(1)对称分布的多气室结构可以提高承载面上的压力分布均匀性,相比单气室具有更高的搬运稳定性,其源于承载面中心区域形成的大面积高压滞留区;(2)地面沟槽的出现会导致气垫单元产生倾斜力矩,并且该力矩随着气垫跨越沟槽会不断发生变化;力矩的产生容易引起气垫泄压,从而导致工作失效。最后通过多孔板的流量和振动实验初步验证了多气孔气垫结构在搬运单元上应用的有效性。
The air-cushion suspension handling system has the advantages of large carrying capacity,small footprint,and no damage to the ground,but the uneven ground during the handling process strongly affects the handling performance.In this paper,through theory,simulation and experiment,the suspended flow field model of porous air cushion is established,and the evaluation coefficient of obstacle stability is proposed.The analysis results show that(1)the high stability of the symmetrically distributed multi-air chamber structure originates from the bearing surface;the central area forms a large area of high pressure retention area;compared with a single air inlet,multiple air inlets can improve the uniformity of pressure distribution on the bearing surface,which is beneficial to stable handling;(2)When the obstacle is passed,the appearance of the ground groove will cause the tilting moment on the air cushion,and at the same time,the bearing capacity will be reduced and the air consumption will increase.Finally,the effectiveness of the multi-porous air cushion structure in the handling unit is preliminarily verified by the flow and vibration experiments of the porous plate.
作者
王根成
郭宗福
赵程磊
夏兰强
吴欣
WANG Gencheng;GUO Zongfu;ZHAO Chenglei;XIA Lanqiang;WU Xin(State Grdi Zhoushan Power Supply Company,Zhoushan Zhejiang 316000,China;School of Mechanical Engineering,Hangzhou Dianzi University,Hangzhou 310018,China)
出处
《机械设计与研究》
CSCD
北大核心
2023年第4期203-208,共6页
Machine Design And Research
关键词
搬运气垫
气室结构
承载性能
air-cushion suspension handling unit
air chamber structure
load-bearing performance
