摘要舰船舷侧门梯集成装置的主要功能是向乘客提供正常出入通道及应急撤离通道。门梯合一式登船门因其便捷易用的特点，在现代舰船上已被应用。但由于技术储备和其他原因，国产舰船上并未普及应用，现存的舰船门梯也存在这或多或少的缺陷和瑕疵。86130

  本设计以普通舰船为设计基础，对舷侧门梯-门梯合一的机构设计方案，开启闭合运动方式、机构原理、控制方案及钢绳布置等进行设计。对比国内外现存方案，主要有以下几个方面的优势：1）采用铰链副四杆传动机构，每扇门板仅有一个自由度，使得船舷外侧没有多余机构，有效地增强了门板的强度和刚度；2）传动方案采用导论-钢丝绳控制门板开启闭合，比起液压传动具有可靠性高、易于维护等优点；3）使用PLC对绞轮这一单一动力源进行控制，方法简单有效，成本较低；4）将开启的方式改进为向下开启，将原舷梯与门板集成为一套装置，动力合二为一，合理利用了空间，结构更加合理。

毕业论文关键词：门梯；四杆机构；钢丝绳-导轮；PLC

Abstract The main function of integrated device of broadside door ladder is to provide passengers with normal access and emergency evacuation。Door stairs boarding gate because of its easy to use, has been used in modern ship。However, due to technical reserves and other reasons, door stairs boarding gate has not been widely used in the domestic ship ,and the existing ship's gates also have more or less defects and flaws。

This design is based on the design of ordinary ships ,designing the scheme of mechanism ,open-and-closed motion ,mechanism principle,scheme of control and wire rope’s arrangement。Compared with the existing domestic and foreign existing programs ,it has the following advantages: 1)The hinged four rod transmission mechanism, that makes each door panel own only one degree of freedom, leads to the outcome that where are not redundant mechanism outside the ship side, which effectively enhances the strength and the rigidity of the door。 2)Compared with the hydraulic drive,the scheme that steel wire rope controls door’s open and close has the advantages of high reliability, easy maintenance and so on。 3)Using PLC to control the single power source。 The method is simple and effective, and the cost is low。 4)Improve the door into opening downwards , make the original gangway and door integrated for one device, dynamic combined,  use a reasonable space,and make the structure more reasonable。

Keywords：Door ladder ; Four bar mechanism; wire rope and guiding round; PLC

目  录

第一章 绪论 1

1。1 设计背景 1

1。3 舰船舷侧隐身门梯集成装置的研究现状与发展 2

1。3 设计内容概述 3

1。4 主要设计内容 4

第二章  舰船舷侧隐身门梯集成装置主要零部件设计 5

2。1 舷梯机构设计 5

2。2 四杆机构设计 6

2。3大小门板设计 7

第三章 舰船舷侧隐身门梯集成装置传动方案设计 8

3。1主要内容概述 8

3。2 确定钢丝绳走向 8

3。3 导轮组的布置 10

3。4 导轮组件设计 12

3。5 手动式门梯关闭装置设计