吊装船升降系统中齿轮齿条的设计与优化研究
发布时间：2018-07-31 13:23
【摘要】：超大模数齿轮在重大工程装备中的应用越来越广泛,且齿轮模数也在不断增大,如海洋钻井平台中齿轮的模数已达135mm。在国家标准GB3480-1997中,齿轮最大模数为50mm,而对模数超过50mm的超大模数齿轮来说,目前尚无成熟的设计理论及强度计算理论。 本课题以江苏省科技计划支撑项目《海上风电吊装和运输专用工作船研发》为背景,研究超大模数齿轮的设计方法,并为该吊装船设计一套安全、可靠的超大模数齿轮齿条传动机构,在此基础上,利用有限元法对超大模数齿轮的接触强度及弯曲强度进行深入分析,并对齿轮齿条强度进行优化研究。本论文主要研究内容为： 1.根据齿轮啮合理论,研究超大模数齿轮设计方法。利用相似理论与有限元相结合,研究适合任意模数、压力角等参数的齿轮设计方法,建立超大模数齿轮的模数及分度圆计算数学模型,并采用有限元法求解复合齿形系数Y17 2.针对风电吊装船的参数及设计要求,分析最危险工况(预压工况)下齿轮齿条机构所受的外载荷；利用研究出的超大模数齿轮设计方法为其升降系统设计一套安全、可靠的齿轮齿条传动机构。 3.基于C#语言及SolidWorks软件的二次开发技术,开发一套渐开线圆柱齿轮精确的参数化建模程序,并建立齿轮齿条啮合三维模型；利用有限元法对齿轮齿条进行接触分析,研究超大模数齿轮齿条的齿面接触应力及齿根弯曲应力在一个啮合周期内的变化规律。 4.研究渐开线齿轮变位系数x、压力角α、齿顶高系数ha*、齿顶隙系数c*、齿根圆角半径系数ρf*、模数m及齿条宽度b对超大模数齿轮承载能力的影响规律,并在此基础上,对原设计的齿轮齿条机构进行优化,使齿轮齿条的弯曲强度与接触强度得到了很大程度的提高。分析规律显示：每个参数对齿轮齿条承载能力都有较大程度的影响,但影响程度各不相同。
[Abstract]:Super-large modulus gears are more and more widely used in major engineering equipment, and the gear modulus is also increasing, such as the gear modulus in offshore drilling platform has reached 135 mm. In the national standard GB3480-1997, the maximum modulus of gear is 50 mm, but for the super modulus gear whose modulus exceeds 50mm, there is no mature design theory and strength calculation theory. Based on the project "Research and Development of Special working ship for Offshore Wind Power hoisting and Transportation", this paper studies the design method of super modulus gear, and designs a set of safety for the hoisting ship. Based on the reliable transmission mechanism of super modulus gear rack, the contact strength and bending strength of super modulus gear are analyzed by finite element method, and the gear rack strength is optimized. The main contents of this thesis are as follows: 1. According to the theory of gear meshing, the design method of super modulus gear is studied. By combining similarity theory with finite element method, a gear design method suitable for arbitrary modulus, pressure angle and other parameters is studied, and a mathematical model for calculating modulus and indexing circle of super modulus gear is established. The finite element method is used to solve the complex tooth shape coefficient Y172. According to the parameters and design requirements of wind-powered hoisting ship, the external load of gear rack mechanism under the most dangerous condition (preloading condition) is analyzed, and a set of safety for its lifting system is designed by using the developed design method of super-modulus gear. Reliable gear-rack transmission mechanism. 3. Based on the secondary development technology of C # language and SolidWorks software, a set of precise parameterized modeling program for involute cylindrical gear is developed, and a three-dimensional meshing model of gear rack is established, and the contact analysis of gear rack is carried out by using finite element method. The change of tooth surface contact stress and tooth root bending stress in a meshing period of super modulus gear rack is studied. 4. The influence of the modification coefficient x, pressure angle 伪, tooth top height coefficient hag, top gap coefficient cu, root radius coefficient 蟻 f, modulus m and rack width b of involute gear on the load-carrying capacity of super-large modulus gear is studied. By optimizing the original gear rack mechanism, the bending strength and contact strength of gear rack are greatly improved. The analysis results show that each parameter has great influence on the bearing capacity of gear rack, but the influence degree is different.
【学位授予单位】：江苏科技大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH132.41;U674.3
本文编号：2155714
[Abstract]:Super-large modulus gears are more and more widely used in major engineering equipment, and the gear modulus is also increasing, such as the gear modulus in offshore drilling platform has reached 135 mm. In the national standard GB3480-1997, the maximum modulus of gear is 50 mm, but for the super modulus gear whose modulus exceeds 50mm, there is no mature design theory and strength calculation theory. Based on the project "Research and Development of Special working ship for Offshore Wind Power hoisting and Transportation", this paper studies the design method of super modulus gear, and designs a set of safety for the hoisting ship. Based on the reliable transmission mechanism of super modulus gear rack, the contact strength and bending strength of super modulus gear are analyzed by finite element method, and the gear rack strength is optimized. The main contents of this thesis are as follows: 1. According to the theory of gear meshing, the design method of super modulus gear is studied. By combining similarity theory with finite element method, a gear design method suitable for arbitrary modulus, pressure angle and other parameters is studied, and a mathematical model for calculating modulus and indexing circle of super modulus gear is established. The finite element method is used to solve the complex tooth shape coefficient Y172. According to the parameters and design requirements of wind-powered hoisting ship, the external load of gear rack mechanism under the most dangerous condition (preloading condition) is analyzed, and a set of safety for its lifting system is designed by using the developed design method of super-modulus gear. Reliable gear-rack transmission mechanism. 3. Based on the secondary development technology of C # language and SolidWorks software, a set of precise parameterized modeling program for involute cylindrical gear is developed, and a three-dimensional meshing model of gear rack is established, and the contact analysis of gear rack is carried out by using finite element method. The change of tooth surface contact stress and tooth root bending stress in a meshing period of super modulus gear rack is studied. 4. The influence of the modification coefficient x, pressure angle 伪, tooth top height coefficient hag, top gap coefficient cu, root radius coefficient 蟻 f, modulus m and rack width b of involute gear on the load-carrying capacity of super-large modulus gear is studied. By optimizing the original gear rack mechanism, the bending strength and contact strength of gear rack are greatly improved. The analysis results show that each parameter has great influence on the bearing capacity of gear rack, but the influence degree is different.
【学位授予单位】：江苏科技大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH132.41;U674.3
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