公共场所室内清扫车死角清扫机构设计研究
发布时间：2019-01-24 16:07
【摘要】：针对公共场所室内清扫车工作过程中转弯出现清扫不到位问题,本文提出一种死角清扫机构设想,即采用清扫补偿法的想法,在传统清扫机构基础上进行改进,实现清扫车无死角清扫。死角清扫机构是本文设计研究的关键部件,工作过程中承受载荷,极易发生变形。应用有限元分析软件ANSYS方法对死角清扫机构的受力关键部位进行分析,对机构进行优化设计,以满足工作需求。死角清扫机构在独立电机驱动下,需要与清扫车的转向速度匹配,实现死角最大化清扫。针对这一问题,本文以死角清扫机构为研究对象,以现有成型的公共场所室内清扫车为研究背景,利用运动分析软件ADAMS对现有公共场所室内清扫车和死角清扫机构进行运动学分析,验证死角清扫机构能否实现死角清扫,并且试验出与清扫车速度匹配的转速。主要研究内容如下:(1)查阅相关资料对现有清扫车清扫机构及原理进行研究,根据阿克曼转向定律推出最小转弯半径,设计公共场所室内清扫车,为死角清扫机构的设计研究提供平台和数据基础。(2)利用三维建模软件Solid Works中的参数化和特征造型技术建立死角清扫机构及整机的三维实体模型,对装配体进行可视化的虚拟装配、干涉检查。(3)利用ADAMS软件对整机进行运动学分析,从运动位移图中得出最小转向半径和距离墙壁最大距离,设计死角清扫机构。对比分析添加死角清扫机构的运动位移图,实验在不同转速下的运动位移图,匹配出与清扫车高速、中速、低速转向过程中的死角清扫机构的转速。(4)分析死角清扫机构工作时的受力情况,运用ANSYS软件对关键受力机构进行静力学分析。通过分析得到原有设计的曲柄连杆机构不能满足正常工作,根据分析结果从结构、材料等方面对曲柄连杆机构进行改进优化,材料由Q235改为45号钢,曲柄厚度由5mm改为10mm,中间在考虑加工工艺情况下设计为中空结构,在比较薄弱的位置添加加强筋,在死角清扫机构质量变化较小的情况下保证了工作需要。(5)设计超声波测距单片机控制系统,准确测量死角清扫机构与墙壁距离,防止发生碰撞,实现机电一体化的有效结合。
[Abstract]:In view of the problem of not cleaning in turn in the working process of indoor sweeper in public places, this paper puts forward an assumption of dead-angle cleaning mechanism, that is, adopting the idea of cleaning compensation method and improving on the basis of traditional cleaning mechanism. Realize cleaning car without dead angle cleaning. Dead-angle cleaning mechanism is a key component in this paper. It is easy to deform when working under load. The finite element analysis software ANSYS was used to analyze the key parts of the dead-angle cleaning mechanism, and to optimize the design of the mechanism to meet the needs of the work. The dead-angle cleaning mechanism driven by an independent motor needs to match the steering speed of the sweeper to maximize the dead-angle cleaning. Aiming at this problem, this paper takes the dead-angle cleaning mechanism as the research object, and takes the existing formed indoor sweeper in public places as the research background. The kinematics analysis of indoor sweeper and dead-angle cleaning mechanism in public places is carried out by using the motion analysis software ADAMS to verify whether the dead-angle cleaning mechanism can realize dead-angle cleaning and the speed matching with the speed of sweeper is tested. The main research contents are as follows: (1) referring to the relevant data to study the existing sweeper cleaning mechanism and principle, according to Ackerman's law of steering to deduce the minimum turning radius, design the indoor sweeping vehicle in public places, It provides a platform and data basis for the design and research of dead-angle cleaning mechanism. (2) using the parameterization and feature modeling technology in the three-dimensional modeling software Solid Works, the dead-angle cleaning mechanism and the 3D solid model of the whole machine are established. Visual virtual assembly and interference inspection of the assembly. (3) the kinematics analysis of the whole machine is carried out by using ADAMS software, the minimum steering radius and the maximum distance from the wall are obtained from the motion displacement diagram, and the dead-angle cleaning mechanism is designed. By comparing and analyzing the motion displacement diagram of adding dead-angle cleaning mechanism, the motion displacement map of the experiment under different rotational speeds is matched with the high-speed and medium-speed sweeper. The rotational speed of dead-angle cleaning mechanism in low-speed steering. (4) the stress of dead-angle cleaning mechanism is analyzed, and the statics analysis of the key mechanism is carried out by using ANSYS software. Through the analysis, it is found that the original designed crank and connecting rod mechanism can not meet the normal work. According to the analysis results, the crank linkage mechanism is improved from Q235 to 45 steel, and the thickness of the crank is changed from 5mm to 10mm, according to the analysis results, the crank linkage mechanism is improved and optimized from the structure and material aspects. The middle is designed as a hollow structure under the consideration of processing technology, the reinforcement is added in the weaker position, and the work needs are ensured under the condition that the mass change of the dead angle cleaning mechanism is small. (5) the ultrasonic distance measuring single-chip microcomputer control system is designed. The distance between the dead angle cleaning mechanism and the wall is accurately measured to prevent collision and realize the effective combination of mechatronics.
【学位授予单位】：石河子大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U469.691
，
本文编号：2414612
[Abstract]:In view of the problem of not cleaning in turn in the working process of indoor sweeper in public places, this paper puts forward an assumption of dead-angle cleaning mechanism, that is, adopting the idea of cleaning compensation method and improving on the basis of traditional cleaning mechanism. Realize cleaning car without dead angle cleaning. Dead-angle cleaning mechanism is a key component in this paper. It is easy to deform when working under load. The finite element analysis software ANSYS was used to analyze the key parts of the dead-angle cleaning mechanism, and to optimize the design of the mechanism to meet the needs of the work. The dead-angle cleaning mechanism driven by an independent motor needs to match the steering speed of the sweeper to maximize the dead-angle cleaning. Aiming at this problem, this paper takes the dead-angle cleaning mechanism as the research object, and takes the existing formed indoor sweeper in public places as the research background. The kinematics analysis of indoor sweeper and dead-angle cleaning mechanism in public places is carried out by using the motion analysis software ADAMS to verify whether the dead-angle cleaning mechanism can realize dead-angle cleaning and the speed matching with the speed of sweeper is tested. The main research contents are as follows: (1) referring to the relevant data to study the existing sweeper cleaning mechanism and principle, according to Ackerman's law of steering to deduce the minimum turning radius, design the indoor sweeping vehicle in public places, It provides a platform and data basis for the design and research of dead-angle cleaning mechanism. (2) using the parameterization and feature modeling technology in the three-dimensional modeling software Solid Works, the dead-angle cleaning mechanism and the 3D solid model of the whole machine are established. Visual virtual assembly and interference inspection of the assembly. (3) the kinematics analysis of the whole machine is carried out by using ADAMS software, the minimum steering radius and the maximum distance from the wall are obtained from the motion displacement diagram, and the dead-angle cleaning mechanism is designed. By comparing and analyzing the motion displacement diagram of adding dead-angle cleaning mechanism, the motion displacement map of the experiment under different rotational speeds is matched with the high-speed and medium-speed sweeper. The rotational speed of dead-angle cleaning mechanism in low-speed steering. (4) the stress of dead-angle cleaning mechanism is analyzed, and the statics analysis of the key mechanism is carried out by using ANSYS software. Through the analysis, it is found that the original designed crank and connecting rod mechanism can not meet the normal work. According to the analysis results, the crank linkage mechanism is improved from Q235 to 45 steel, and the thickness of the crank is changed from 5mm to 10mm, according to the analysis results, the crank linkage mechanism is improved and optimized from the structure and material aspects. The middle is designed as a hollow structure under the consideration of processing technology, the reinforcement is added in the weaker position, and the work needs are ensured under the condition that the mass change of the dead angle cleaning mechanism is small. (5) the ultrasonic distance measuring single-chip microcomputer control system is designed. The distance between the dead angle cleaning mechanism and the wall is accurately measured to prevent collision and realize the effective combination of mechatronics.
【学位授予单位】：石河子大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U469.691
，
本文编号：2414612
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