抽油机机械制动机构设计

发布时间：2018-04-18 17:37

本文选题：机械制动机构 + 增力机构　；参考：《沈阳理工大学》2017年硕士论文

【摘要】：电子机械制动系统是利用电机驱动制动部件,取代传统的液压或气动执行部件的制动系统。液压和气压制动系统存在自身的缺点,电子机械制动系统拥有效率高、反应灵敏、制动性能稳定等优点,在汽车、机械等领域有取代传统制动系统的趋势及广阔的应用前景。为提高无游梁式抽油机抽油杆的换向效率,本文以电子机械制动系统为研究对象,通过系统建模、动力学仿真及有限元分析等方法,设计出符合无游梁式抽油机抽油杆换向功能的电子机械制动系统。针对所应用机械制动机构的工作环境及结构特点,对课题背景及国内外电子机械制动的发展状况及研究成果进行了解。为了课题研究的方便,本文的抽油机机械制动机构为无游梁式抽油机样机所设计的。本文研究的主要内容有:(a)根据电子机械制动系统的原理提出抽油机机械制动机构的总体设计方案,进行总体设计。并根据设计方案,对总体设计中的主要组成机构或部件进行计算和研究,确定机械制动机构中驱动电机、转换机构、增力机构及制动形式。(b)在确定机构中主要组成部件后,对其进行具体设计包括摩擦片、增力机构、滚珠丝杠副及驱动电机,并对整个机构的部件进行加工装配。(c)完成机构设计,对机构进行动力学仿真,对制动过程进行动力学仿真分析,获取制动过程中的关键信息如制动盘的速度、制动机构的制动力及制动力矩等。同时对关键零部件根据其物理参数及功能进行有限元分析确保其强度、形变、固有频率符合机构的要求。(d)最后对机构进行物理试验,保证真实的制动效果符合预期,并采集到的关键数据和理论计算进行对比,证明机构设计的正确合理。
[Abstract]:Electromechanical braking system is a braking system which uses motor to drive brake parts instead of traditional hydraulic or pneumatic parts.The hydraulic and pneumatic braking systems have their own shortcomings. The electro-mechanical braking system has the advantages of high efficiency, sensitive response and stable braking performance. It has the tendency to replace the traditional braking system and has a broad application prospect in the fields of automobile, machinery and so on.In order to improve the commutative efficiency of sucker rod in beam free pumping unit, this paper takes the electro-mechanical braking system as the research object, through the methods of system modeling, dynamic simulation and finite element analysis, etc.An electronic-mechanical braking system is designed which accords with the reversing function of sucker rod in non-beam pumping unit.In view of the working environment and structural characteristics of the applied mechanical brake mechanism, the background of the subject, the development situation and research results of the electronic mechanical brake at home and abroad are discussed.For the convenience of the research, the mechanical brake mechanism of the pumping unit is designed by the prototype of the pumping unit without beam.The main content of this paper is: (1) according to the principle of electro-mechanical braking system, the general design scheme of mechanical braking mechanism of pumping unit is put forward and the overall design is carried out.According to the design scheme, the main components or components in the overall design are calculated and studied. After determining the main components of the mechanism, the driving motor, the conversion mechanism, the force booster mechanism and the braking form in the mechanical braking mechanism are determined.The specific design includes friction plate, force booster mechanism, ball screw pair and drive motor. The mechanism is designed by machining and assembling the parts of the whole mechanism, and the dynamic simulation of the mechanism is carried out.The dynamic simulation analysis of the braking process is carried out to obtain the key information such as the speed of the brake disc, the braking force and the braking torque of the brake mechanism.At the same time, according to the physical parameters and functions of the key parts, finite element analysis is carried out to ensure that the strength, deformation and natural frequency of the key parts meet the requirements of the mechanism. Finally, the physical test of the mechanism is carried out to ensure that the real braking effect is in line with the expectation.The key data collected are compared with the theoretical calculation to prove that the design of the mechanism is correct and reasonable.
【学位授予单位】：沈阳理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE933.1

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