About the extension life and maintenance method of electric telescopic door project

电动伸缩门的基本组件是导轨、滑轮及传动皮带。由于这三个部分与电动伸缩门的运行直接有关，是电动伸缩门正常使用条件下的易损件，其结构设计、材质、加工精度、安装和调节精度决定了其维修保养要求和使用寿命。电动伸缩门电气组件的寿命主要与不当使用和偶然事故有关。

The basic components of electric telescopic door are guideway, pulley and drive belt. Because these three parts are directly related to the operation of the electric telescopic door, it is a vulnerable part under normal operation conditions of the electric expansion door. Its structure design, material, machining precision, installation and adjustment precision determine its maintenance and service life. The life of electrical components of electric telescopic door is mainly related to improper use and accident.

长期以来，电动伸缩门滑轨的设计完全不同于非电动伸缩门滑轨的设计。后者通常有两道水平方向的平行滑轨，两个(或四个)滑轮通过中间的连接件与悬挂的移动门体相连，移动门体的重心恰好在两道滑轨的支撑力之间，形成稳定的"正悬挂"，这种稳定的结构可以达到很好的稳定性和静音效果。但是，电动伸缩门的滑轨由于要兼顾与门框的固定、门体吊挂及调节、电气组件的安装和外饰盖板的安装等功能，所以最简单的办法就是将滑轨设计成单侧滑道，门体在一侧通过滑轮侧向吊挂在滑轨上，形成侧悬挂。这种设计的优点是安装和调节门体方便、维修也容易。但是，这种设计有许多弱点。

For a long time, the design of the electric sliding door sliding rail is completely different from the design of the non electric telescopic door sliding rail. The latter usually has two horizontal parallel slideways, and two (or four) pulleys are connected to the suspended movable door through the intermediate connector. The center of gravity of the moving door is just between the support force of the two track. The stable "positive suspension" is formed. This stable structure can achieve good stability and mute effect. However, the sliding rail of the electric telescopic door should be taken into account with the fixing of the door frame, the hoisting and adjusting of the door body, the installation of the electrical components and the installation of the outer cover plate, so the simplest way is to design the slide rail into a single side slide, and the door body hangs laterally on one side through the pulley on the slide rail to form a side suspension. The advantage of this design is that it is easy to install and adjust the door body and easy to maintain. However, there are many weaknesses in this design.

所以使用这种电动伸缩门必须注意保养和维护滑轮与导轨上部间隙容易使门体滑落，使用的安全性得不到保证。所以选择这种电动伸缩门必须注意电动伸缩门的抗风压强度。这种不稳定的运行使驱动器负载不断变化，对电气组件的使用寿命影响极大。侧悬挂结构，对门体向上的支撑力都在一条线上，门体重心由于安装精度的误差和风力的影响．使门体不仅形成静态侧摆也产生动态侧摆。为此．这种电动伸缩门门体下部的导向块，通常称为"止摆块"，就使用一种轴承，轴承直径小于门体下部导槽，使门体在两方向摆动的条件下依然可以运行。这种侧摆产生的震动在使用效果上表现为噪音，其后果必然导致滑轮和导轨的磨损。

Therefore, the use of this kind of electric telescopic door must pay www.gangsiguan.com.cnwww.zidongmeni.cnwww.jinanbanjia.net.cnwww.jinanyanglao.cn

www.qingdaobanjia.net.cnwww.zidongmeni.com.cnattention to the maintenance and maintenance of the upper clearance between the pulley and the guide rail easy to make the door body slide, the use of safety can not be guaranteed. Therefore, the choice of such electric telescopic door must pay attention to the wind strength of the electric telescopic door. This unstable operation drives the load of the driver constantly changing and has great influence on the service life of the electrical components. The side suspension structure is on the one line with the support force of the door body upward. The door body center of gravity is not only the static side pendulum but also the dynamic side pendulum, because of the error of the installation precision and the influence of the wind. For this purpose, the guide block in the lower part of the electrotelescopic door is usually called the "stop pendulum". A bearing is used, the diameter of the bearing is less than the guide groove in the lower part of the door, so that the door can still run in the two direction. The vibration produced by the side swing is noise in the use effect, and the consequence will inevitably cause the wear of the pulley and guide rail.