广东工业大学学报 ›› 2016, Vol. 33 ›› Issue (05): 65-68.doi: 10.3969/j.issn.1007-7162.2016.05.012

• 综合研究 • 上一篇    下一篇

起重机械用绳排索具力学与疲劳特性研究

马平1， 廖明易1， 王志勇2   

  1. 1.广东工业大学 机电工程学院，广东 广州 510006；2.建峰索具有限公司，广东 广州 511356
  • 收稿日期:2016-01-23 出版日期:2016-09-10 发布日期:2016-09-10
  • 作者简介:马平（1968-），男，教授，博士，主要研究方向为高速数控机床关键技术、超精密驱动进给技术.
  • 基金资助:

    广州市产学研合作资助项目（2014Y2-00222）

 A Research on Mechanics and Fatigue Properties of Ropes Rowed Sling with Sockets Used in Crane

Ma Ping 1, Liao Ming-yi 1, Wang Zhi-yong 2   

  1. 1. School of Electrical and Mechanical Engineering, Guangdong University of Technology, Guangzhou 510006, China; 2. Jianfeng Sling Co., Ltd., Guangzhou 511356, China
  • Received:2016-01-23 Online:2016-09-10 Published:2016-09-10

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摘要：

绳排索具的力学及疲劳特性是影响起重机伸缩臂安全运行的重要因素.基于选用的6×7+IWS型钢丝绳设计出一款新型楔腔形索节，并建立绳排索具整体3D模型，导入Ansys-Workbench平台建立索具的有限元分析模型.对索具销轴处三方向自由度进行约束，另一端施加100 MPa竖直向下集中力，对索节应力与总体变形分布规律进行研究.研究发现，内锥角是影响索具力学性能的主要因素，当内锥角为16°时绳排绳索具承受的最大接触应力最小且仅为303.4 MPa；随着内锥角在一定范围内变化，索节总体变形量基本控制在0.025～0.03 mm范围内.对影响索具疲劳寿命的钢丝绳进行研究，结果表明交互捻钢丝绳索具疲劳寿命次数能满足工程起重的使用要求，可作为起重机械用索具优先选择对象.

关键词: 绳排索具； 有限元； 应力； 变形； 捻向； 疲劳寿命

Abstract:

Mechanics and fatigue characteristics are important factors of the ropes rowed sling with sockets which affect the safe operation of telescopic arm of lifting machinery. A new cavity with wedge structure is designed based on the selection of 6×7+IWS wire rope and the whole 3D model of the rigging developed. By importing the model to Ansys-workbench platform, the finite element model is established. The degree of freedom in three directions is imposed to rigging’s pin at one end and loading the 100 MPa mass force at the other end as the boundary condition of the model. It is revealed that the inner cone angle is important which affects the mechanical properties of the rigging. The rigging can bear the maximum stress at least 342.17 MPa with 16° inner cone angle. As the inner cone angle changing in a certain range, the total deformation of the rigging is from 0.025 mm to 0.03 mm. The fatigue life of the ordinary lay wire rope can meet the requirement of the engineering crane, and it can be the preferred object.

Key words: ropes rowed sling with sockets; FEA; stress; deformation; lay direction; fatigue life

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