深井式立体智能车库同步升降装置结构设计与有限元分析

发布时间：2018-06-12 20:07

本文选题：深井式立体智能车库 + 自行式升降平台　；参考：《南华大学》2014年硕士论文

【摘要】：随着城市汽车保有量的不断增加，停车难已经成为当今社会高度关注和政府亟待解决的问题。城市的发展使得土地弥足珍贵，要为解决停车难问题而规划出足够的地上停车面积是一件两难的事情，而发展地下停车空间无疑是解决这一难题的有效途径。深井式立体智能车库是一种建造于地下的光机电液计一体化立体停车设备，其先进的结构设计和布局能弥补现行其它形式立体车库存在的占地面积大、能耗高、噪声大、存取车时间长、不易组合形成车库群等方面的不足，有效地解决停车环境与城市规划之间的矛盾。在深井式立体智能车库的研制和试运行过程中，，发现其自行式升降平台易因偏载产生“闷车”现象，这会严重影响该类车库的可靠运行及推广应用。本文针对深井式立体智能车库的“闷车”现象，以PSC8CK-4ZT型车库为蓝本，在优化了升降平台桁架焊接结构、有效控制了升降系统的制造和安装精度的基础上，剖析出偏载造成液压马达的启动阻力过大、输出功率大大超出其出厂设置值是闷车现象的主要原因，比较分析现行同步方案等，采用移植创造和组合创新的方法，研制出具有结构简单、同步响应速度快、稳定性好以及可靠性高等特点和优势的齿轮齿条消隙式刚性同步机构。进一步通过结构优化，提升了升降平台的可维修性；通过有限元优化设计，提升了升降平台的性能重量比。从而使深井式立体智能车库具有很高的可靠性、经济性和可维修性。论文主要包含以下具体研究内容：（1）对自行式升降平台进行了力学分析，利用有限元软件ANSYS分析平台桁架的受力变形，并对其焊接结构进行了优化设计，提高平台桁架的刚度，减小桁架变形对闷车现象的影响。（2）设计齿距控制规对齿轮齿条的装配精度进行控制，并采用磁性直角水平仪控制齿条的安装精度，保证齿轮齿条啮合的准确性、平稳性和载荷分布均匀性；此外，为避免因齿条松动造成的振动、噪声和安全事故，采用移植创造和组合创新的方法，创新设计了齿条安装的防松方案。从而有效控制了升降系统的制造和安装精度。（3）进行了升降平台偏载条件下的力学分析，指出桁架变形量对传动装置的影响不足以引发负载运行过程中的“闷车”现象，剖析出液压马达在偏载条件下的启动阻力过大、输出功率大大超出其出厂设置值是导致“闷车”现象的根本原因。（4）系统分析现行同步装置适用性的基础上，采用移植创造和组合创新的方法，设计制造出齿轮齿条消隙式刚性同步机构；基于维修性，对同步机构进行了结构优化，提升了升降平台的可维修性；最后，进行了同步机构的轻量化研究，提高了升降平台的性能重量比。试验运行表明，采用消隙式刚性同步机构的深井式立体智能车库取得了良好的同步效果，有效解决了“闷车”问题，并为同类升降平台同步问题的解决提供了理论支撑和技术解决方案。
[Abstract]:With the increasing number of urban cars, the parking difficulty has become a high concern in today's society and the problem that the government needs to solve. The development of the city makes the land precious. It is a dilemma to plan the parking area on the ground to solve the problem of parking, and the development of underground parking space is undoubtedly the solution to this problem. An effective way to solve the problem.
Deep well stereoscopic intelligent garage is a kind of integrated stereo parking equipment built in the underground, its advanced structure design and layout can make up for the existing other forms of the existing three-dimensional garage with large area, high energy consumption, large noise, long time to access the car, and not easy to combine to form a garage group, and effectively solve the stop. In the development and trial operation of the deep well type three-dimensional intelligent garage, it is found that the self-propelled lift platform is easy to produce "stuffy car" phenomenon, which will seriously affect the reliable operation and application of this kind of garage.
In view of the "stuffy car" phenomenon of deep well stereoscopic intelligent garage, this paper takes the PSC8CK-4ZT type garage as the blueprint, optimizes the welding structure of the lifting platform truss, effectively controls the manufacturing and installation accuracy of the lifting system, and analyzes the excessive load of the hydraulic motor starting with partial load, and the output power is greatly beyond the set value of its factory. It is the main reason for the phenomenon of the stuffing, comparing and analyzing the current synchronization scheme. By using the method of transplant creation and combination innovation, the gear rack clearance type rigid synchronous machine with simple structure, fast synchronous response speed, good stability and high reliability is developed. The structure optimization is used to further improve the lifting platform. It can improve the performance and weight ratio of the lifting platform by the finite element optimization design, so that the deep well stereoscopic intelligent garage has high reliability, economy and maintainability. The main contents of this paper are as follows:
(1) the mechanical analysis of the self-propelled lifting platform was carried out. The finite element software ANSYS was used to analyze the stress and deformation of the platform truss, and the welding structure was optimized. The stiffness of the truss was improved and the effect of truss deformation on the phenomenon of the car was reduced.
(2) the precision of gear and rack assembly is controlled by the design of tooth distance control gauge, and the magnetic right angle level instrument is used to control the installation precision of the rack, to ensure the accuracy of the gear rack meshing, the smoothness and the uniformity of load distribution. In addition, to avoid the vibration, noise and safety accidents caused by the loosening of the rack, the creation and combination of transplanting are adopted. The new method innovating the design of rack loosening prevention, thus effectively controlling the manufacturing and installation accuracy of the lifting system.
(3) the mechanical analysis of the lifting platform under the loading condition is carried out. It is pointed out that the influence of the truss deformation amount to the transmission device is not enough to trigger the "stuffy car" phenomenon during the load operation. It is found out that the starting resistance of the hydraulic motor under the partial load is too large and the output power is greatly beyond its factory setting value, which is the root of the "stuffy car" phenomenon. Reason.
(4) on the basis of analyzing the applicability of the current synchronizer system, the gear and rack clearance rigid synchronization mechanism is designed and manufactured with the method of transplant creation and combination innovation. Based on the maintainability, the structure optimization of the synchronization mechanism is carried out and the repairability of the lifting platform is improved. Finally, the lightweight research of the synchronization mechanism is carried out. The performance and weight ratio of the lifting platform is higher.
The experimental operation shows that the deep well stereoscopic intelligent garage with the stilling rigid synchronous mechanism has achieved good synchronization effect, effectively solves the problem of "stuffy car", and provides theoretical support and technical solution for solving the synchronization problem of similar lifting platform.
【学位授予单位】：南华大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U491.71

【参考文献】