样本视频成绩单
以下是为此模块提供的视频示例的成绩单：
对面的蜗壳和轴我们具有驱动组件。驱动组件将需要轴传递电源，轴承以支撑轴，以及与电动机本身的耦合。其中元素所在的位置取决于它们是靠近耦合还是分开耦合。分流耦合泵在底座泵中更昂贵且非常常见。泵具有自己的轴承组件，并且电动机和泵轴连接。联接器加入两个轴，但是如果电动机或泵锁定，它也用作解耦器和潜在的牺牲元件。在牢固耦合泵中，泵叶轮，机械密封和轴套全部安装在电机轴上。因为泵没有轴承组件，所以电机轴承必须处理所有扭转载荷。这限制了可以使用的电机的尺寸和功率。紧凑型泵紧凑，简单，便宜，用于轻型职业应用。 Couplings are mechanical devices used to connect rotating shafts and absorb minor misalignments between them. Couplings can be rigid or flexible depending on the alignment accuracies of the system and torque requirements. There are many types of couplings, and we will touch on those most commonly used with hydronic pumps. Jaw coupling, also referred to as a spider coupling, consist of pairs of multi-jawed hubs that mate with flexible elastomeric spiders. The elastomeric spiders give these couplings some damping capacity and often the spiders are available with different properties to accommodate various conditions. While a jaw coupling utilizes elastomeric components, most often when someone refers to an elastomeric coupling, they are referring to an older design that has been used for decades. In fact, this type of elastomeric coupling is the most common coupling used. Elastomeric couplings consist of two metal hubs that attach to both the motor and pump shaft. Between them there is a hard rubber insert. There's no maintenance necessary with this coupling, as it does not need lubrication.
