摘 要
船模拖曳系统是对船模进行水面和水下拖曳试验的关键设备，其主要功能是拖曳被试模型按设定深度和设定航速直线航行，测试船模的各种性能参数，为船舶和水下航行器的设计提供技术支撑。拖曳系统能实现被试模型在不同水深下匀速、加速和减速航行，航行的深度和速度由控制系统调节，同时能对不同尺寸的船模进行拖拽试验。
本文着重探讨“船模拖曳系统升降架转动装置”的设计方案。升降架总长10m，质量为5吨，且质量分布沿长度方向基本均匀。设计要求包括：升降架能够在转动装置作用下绕位于升降架顶部向下2.5m处的转动支点转到水平位置，允许上下5°的偏差，并在工作位置（竖直状态）和水平位置与龙门架可靠固定。电动绞车安装于龙门架的上平面，可在水平方向延伸，最多延伸到距离转动支点3m处。为满足互换性，水池两端的龙门架上各安装一套升降架转动装置。本文首先对相关技术知识进行了深入研究和学习，随后提出了升降架转动装置的设计方案，并在完成设计计算、设备及零部件选型后，对方案进行了优化和技术图纸的绘制。
关键词：船模拖曳系统；升降架；转动装置；电动绞车；设计计算；
Abstract
The ship model towing system is the key equipment for the surface and underwater towing test of the ship model. Its main function is to tow the test model according to the set depth and set speed, test the various performance parameters of the ship die, and provide technical support for the design of the ship and underwater vehicle. The towing system can realize the uniform speed, acceleration and deceleration of the subject model at different water depths. The depth and speed of the navigation are adjusted by the control system, and at the same time, it can conduct the towing test on different sizes of ship models. This paper focuses on the design scheme of "lift frame rotating device of ship model towing system". The total length of the lifting frame is 10m, and the mass is 5 tons, and the mass distribution is basically uniform along the length direction.
The design requirements include: the lift frame can be turned to the horizontal position around the rotating fulcrum at the top of the lift frame under the action of the rotating device, allowing the deviation of the upper and lower 5, and can be reliably fixed with the gantry in the working position (vertical position) and horizontal position. The electric winch is installed on the upper plane of the gantry, and can extend in the horizontal direction, up to 3m away from the rotating fulcrum. In order to meet the interchangeability, a set of lifting frame rotating device is installed on the gantry at both ends of the sink. In this paper, the relevant technical knowledge is deeply studied and learned, and then puts forward the design scheme of the rotating lifting frame device, and after completing the design calculation, equipment and parts selection, the scheme is optimized and the technical drawing is drawn.
Key words: ship model towing system; lifting frame; rotating device; electric winch; design calculation;
目 录
Abstract
1绪论
1.1选题背景及意义
1.2国内外研究现状及趋势
1.3船模拖曳系统升降架转动装置简介
1.4 设计方案选择
1.4.1 船模拖曳系统升降架转动装置方案介绍
1.4.2 转动机构的方案选择
2 船模拖曳系统升降架转动装置的总体设计
2.1 初定数值
2.1.1已知数据
2.1.2所需数据
2.2 铰点的确定
2.2.1 液压缸支撑点位置的确定
2.3 箱型梁的计算
2.4 悬臂梁上进、退钩液压缸的选择与计算
2.4.1 液压缸的安装方式
2.4.2 液压缸性能参数
2.5 接近开关的选择
3 船模拖曳系统升降架转动装置转动机构设计
3.1 回转支承的计算与选择
3.1.1 回转支承载荷计算
3.1.2 回转支承的结构形式
3.1.3 计算回转支承的当量载荷
3.2 减速机的计算与选择
3.3 减速齿轮的计算
3.3.1 选精度等级、材料及齿数
3.3.2 齿轮设计
3.3.3 几何尺寸计算
3.3.4 大齿轮结构参数
3.4 主传动轴的设计
3.4.1 轴的结构设计
3.4.2 校核轴的疲劳强度
3.5 轴承和键的选择
3.6 电气滑环
4结束语
参考文献
致谢
