多点啮合柔性传动装置的设计及性能研究
发布时间：2018-12-29 10:35
【摘要】：现在世界上主要有三大炼钢方法,即氧气转炉、平炉、电炉。氧气转炉炼钢法占现在钢产量中的绝大部分比重,保证氧气转炉正常运转的前提之一就是合理的设计转炉倾动装置。转炉倾动装置的工作条件是大扭矩、低转速、启动、制动频繁,所以为了改善减速机构中轮齿的受力状况和增强设备的可靠性一般采用多点啮合柔性传动装置。多点啮合柔性传动装置一般为4套初级减速器提供动力,将动力传给末级减速器,末级减速器大齿轮驱动耳轴从而使连接在耳轴上的转炉转动。为了改善整个系统的受力状况对传动装置加装一套柔性传动装置。本文在分析了国内外现有的转炉倾动装置的研究现状后,确定了初级减速器为三环减速器的多点啮合柔性传动装置。由于三环减速器的大减速比、高效率、结构对称等优点其将改善初级减速器为多级普通直齿轮减速器所带来的弊端。 本文首先将根据转炉的公称容量200吨,计算倾动过程中的转炉所需的力矩变化曲线,并根据力矩变化曲线计算倾动过程中所需的最大倾动力矩。根据最大倾动力矩来设计整套多点啮合柔性传动装置的主要参数。其中将主要通过编程选择三环减速器的变位系数;通过对三环减速器的原理及功率流的分析确定三环减速器各轴的设计。在完成基本参数的设计之后,将借助于Pro/E建立虚拟样机进行运动学分析。然后将对整套系统建立动力学模型,分析其固有特性。然后对减速器的箱体做模态分析,得到箱体的固有频率。最后将对柔性传动构件扭力杆做静态和动态分析,并对耳轴及托圈做静态分析。 本文通过深入分析多点啮合柔性传动装置的功能设计要点,给出了一种其主要参数的设计方法,并通过对200吨氧气转炉倾动装置的设计加以实现。在完成该设计后,对其进行了运动学分析以验证该装置的运动学性能是符合使用要求。本文首次对初级减速器为三环减速器的多点啮合柔性传动装置进行了动力学分析,并得到其固有特性。然后对减速箱体做模态分析得到其低频率特性,因此理论上来说可以避免由传动系统异常激振或铁水激振所带来的共振。之后借助于ANSYS对柔性传动构件扭力杆做了静态分析,并通过能量变换分析了其动态性能,最后通过分析得到扭力杆上的最危险截面位置。对耳轴和托圈的强度校核,验证了设计的合理性。
[Abstract]:Now there are three main steelmaking methods in the world, namely oxygen converter, open-hearth furnace and electric furnace. Oxygen converter steelmaking method accounts for most of the steel output at present. One of the prerequisites to ensure the normal operation of oxygen converter is to design the converter tilting device reasonably. The working conditions of converter tilting device are large torque, low speed, starting and braking frequently, so in order to improve the force condition of gear teeth in deceleration mechanism and enhance the reliability of the equipment, multi-point meshing flexible transmission device is generally adopted. The multi-point meshing flexible transmission device generally provides power for four sets of primary reducers, and transfers the power to the final reducer, which is driven by large gears to rotate the converter connected to the ear shaft. In order to improve the mechanical condition of the whole system, a set of flexible transmission device is installed. After analyzing the present research situation of converter tilting device at home and abroad, this paper determines that the primary reducer is a multi-point meshing flexible transmission with three-ring reducer. Due to the advantages of large deceleration ratio, high efficiency and symmetrical structure of the three-ring reducer, it will improve the malpractice of the primary reducer for the multistage ordinary spur gear reducer. In this paper, the torque change curve of converter during tilting process is calculated according to the nominal capacity of 200 tons of converter, and the maximum tilting moment is calculated according to the curve of torque change. According to the maximum tilting moment, the main parameters of the whole set of multi-point meshing flexible transmission are designed. The modification coefficient of the three-ring reducer will be selected mainly by programming, and the design of each shaft of the three-ring reducer will be determined by analyzing the principle and power flow of the three-ring reducer. After the design of the basic parameters is completed, the kinematics analysis of the virtual prototype will be carried out with the help of Pro/E. Then the dynamic model of the whole system is established and its inherent characteristics are analyzed. Then the modal analysis of the reducer box is carried out, and the natural frequency of the box body is obtained. At last, the static and dynamic analysis of the torsion rod of flexible transmission component, and the static analysis of the ear shaft and bracket ring are done. In this paper, a design method of the main parameters of multi-point meshing flexible transmission is presented by analyzing the key points of function design, and the design of 200 ton oxygen converter tilting device is realized. After completing the design, the kinematics analysis is carried out to verify that the kinematics performance of the device meets the requirements of application. In this paper, the dynamic analysis of multi-point meshing flexible transmission with three-ring reducer for primary reducer is carried out for the first time, and its inherent characteristics are obtained. Then the low frequency characteristic of the reducer is obtained by modal analysis, so the resonance caused by abnormal excitation of transmission system or hot metal excitation can be avoided theoretically. Then the static analysis of the torsion bar of flexible transmission member is made by means of ANSYS, and its dynamic performance is analyzed by energy transformation. Finally, the most dangerous section position on the torsion bar is obtained by analysis. The rationality of the design is verified by checking the strength of the ear shaft and bracket.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH132.4
本文编号：2394730
[Abstract]:Now there are three main steelmaking methods in the world, namely oxygen converter, open-hearth furnace and electric furnace. Oxygen converter steelmaking method accounts for most of the steel output at present. One of the prerequisites to ensure the normal operation of oxygen converter is to design the converter tilting device reasonably. The working conditions of converter tilting device are large torque, low speed, starting and braking frequently, so in order to improve the force condition of gear teeth in deceleration mechanism and enhance the reliability of the equipment, multi-point meshing flexible transmission device is generally adopted. The multi-point meshing flexible transmission device generally provides power for four sets of primary reducers, and transfers the power to the final reducer, which is driven by large gears to rotate the converter connected to the ear shaft. In order to improve the mechanical condition of the whole system, a set of flexible transmission device is installed. After analyzing the present research situation of converter tilting device at home and abroad, this paper determines that the primary reducer is a multi-point meshing flexible transmission with three-ring reducer. Due to the advantages of large deceleration ratio, high efficiency and symmetrical structure of the three-ring reducer, it will improve the malpractice of the primary reducer for the multistage ordinary spur gear reducer. In this paper, the torque change curve of converter during tilting process is calculated according to the nominal capacity of 200 tons of converter, and the maximum tilting moment is calculated according to the curve of torque change. According to the maximum tilting moment, the main parameters of the whole set of multi-point meshing flexible transmission are designed. The modification coefficient of the three-ring reducer will be selected mainly by programming, and the design of each shaft of the three-ring reducer will be determined by analyzing the principle and power flow of the three-ring reducer. After the design of the basic parameters is completed, the kinematics analysis of the virtual prototype will be carried out with the help of Pro/E. Then the dynamic model of the whole system is established and its inherent characteristics are analyzed. Then the modal analysis of the reducer box is carried out, and the natural frequency of the box body is obtained. At last, the static and dynamic analysis of the torsion rod of flexible transmission component, and the static analysis of the ear shaft and bracket ring are done. In this paper, a design method of the main parameters of multi-point meshing flexible transmission is presented by analyzing the key points of function design, and the design of 200 ton oxygen converter tilting device is realized. After completing the design, the kinematics analysis is carried out to verify that the kinematics performance of the device meets the requirements of application. In this paper, the dynamic analysis of multi-point meshing flexible transmission with three-ring reducer for primary reducer is carried out for the first time, and its inherent characteristics are obtained. Then the low frequency characteristic of the reducer is obtained by modal analysis, so the resonance caused by abnormal excitation of transmission system or hot metal excitation can be avoided theoretically. Then the static analysis of the torsion bar of flexible transmission member is made by means of ANSYS, and its dynamic performance is analyzed by energy transformation. Finally, the most dangerous section position on the torsion bar is obtained by analysis. The rationality of the design is verified by checking the strength of the ear shaft and bracket.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH132.4
【引证文献】
相关期刊论文 前1条
1 张鑫;;全悬挂转炉倾动装置优化设计分析[J];科技视界;2013年21期
，本文编号：2394730
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