门和硬件基础

相关的课程

关键问题

以下关键问题在这个模块中得到了回答:

每个闭门器的三种设置是什么?
每个门的三个设置更近的是后检查，摆动速度和锁紧速度。

用于锁存器的门是什么类型的？
闩锁装置用于室内门，不需要锁定，例如壁橱门和火门。

弹簧闩锁或止血的重要性是什么？
弹簧闩锁或止缝在锁定时保持门关闭。

在新门中钻孔锁定孔时，应该先钻出哪个孔？
先钻较大的手柄孔。

使用孔锯时应该采取哪些预防措施？
保持钻头直接避免装订孔锯，不要穿宽松的衣服或珠宝可以纠缠在孔锯，不使用触发速度锁定按钮（如果你的钻有一个）。

样例视频记录

以下是本模块提供的视频样本的文本:

液压关门器是一种自动关门的装置。有不同类型的关闭器和不同的安装选项，但它们都是相似的。闭门器内部的弹簧提供关门所需的力。液压油抵消弹簧控制关闭速度。当门打开时，闭合臂旋转一根轴，带动活塞。活塞压缩弹簧，迫使液压油通过端口。液压油和阀门调节开启和关闭速度。每个闭门器都有三种设置:回档，摆动速度和闩锁速度。如果门开得太远，反检查会产生阻力。这样可以防止门撞上墙壁或被风吹开。 Swing speed controls how fast the door closes from fully open to a few degrees from closed. Latch speed controls the closing speed for the last few degrees. It slows the door down so it closes softly but still latches. The swing and latch speed should be adjusted so it takes about 5-7 seconds to close from 90 degrees open. The latch speed should be adjusted so it is fast enough to latch but does not slam. Never back out a valve beyond the closer body or hydraulic fluid could leak out of the closer. Many door closers allow the spring to be adjusted. The spring should be set to achieve the desired opening force. The Americans with Disabilities Act requires that the force to open interior doors does not exceed five pounds. Exterior door closers should be set as low as possible. Make sure to adjust for wind gusts that can cause the door to swing open or slam shut. There are several ways to prop open a door and prevent it from closing. You can install a kick down door stop, place a doorstop between the bottom side of the door and the floor near the handle edge of the door, or use a small weight as long as it does not pose a tripping hazard. Never place a wedge between the door and the hinge side of the door frame. Also, never prop open fire doors. They must remain closed at all times because, if a fire occurs, they keep the fire and smoke from spreading.