(3)螺栓的直径

旋紧转矩会因螺母的直径而导(请参考 图 4)。 通常,螺母的直径越大,旋紧转矩便也越大。

(4)旋紧条件

即使螺纹尺寸相同,旋紧转矩也因转矩率、螺栓 的级别、及螺栓长度而异。另外,各螺栓的金属 表面的状况不同也会导致各旋紧转矩相异。

(5)选购附件的使用

使用延长柄、万向接头、或长的套筒时,旋紧转 矩会相对减少。

(6)套筒的障碍排除

如使用已损坏了的、或已变形的六角或四角套 筒,由于无法得到适当的旋紧力,因而会导致旋 紧转矩的损失。

使用和螺栓不相配的套筒时,将不能获得足够得 旋紧转矩。和螺栓尺寸配套的套筒示于表1

维 护 和 检 查

1.套筒的检查

如使用已损坏了的、或已变形的六角或四角套 筒,由于无法得到适当的旋紧力,因而会导致旋 紧转矩的损失。请对套筒内部的磨损程度紧行周 期检查,必要时请换上新的套筒。

2.检查安装螺钉

要经常检查安装螺钉是否紧固妥善。若发现螺钉 松了,应立即重新扭紧,否则会导致严重的事 故。

3.电动机的维护

电动机绕线是电动工具的心脏部应仔细检查 有无损伤,是否被油液或水沾湿。

4.检查碳刷

为了保证长期的安全使用以及避免触电事故的发 生,本工具的碳刷检查与更换只能由日立授权的 服务中心进行。

5.维修零部件一览表

A:项目号 B:代码号 C:使用数 D:备注

注意

日立牌电动工具的维修、改造和检查须由经日立公 司授权的维修中心进行。

当要求维修或其他保养服务时,若将此零部件一览 表与电动工具一起呈交给经日立公司授权的维修中 心,将有助于维修或保养工作。

在操作和维修电动工具时,必须遵守贵国制定的安 全的有关规则和标准。

改造

日立牌电动工具经常加以改善和改造以采用最新的 先进技术。

因此,某些零部件〔例如代码号和(或)设计〕可 能变更,恕不另行通知。

为求改进,本手册所载规格可能不预先通告而予以 更改。

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Huawei WR 22SA manual 和 检 查, 套筒的障碍排除

WR 22SA specifications

The Huawei WR 22SA is a versatile and advanced wireless router designed to meet the growing demands of modern households and small offices seeking reliable connectivity. With an emphasis on delivering high-speed internet and seamless user experiences, the WR 22SA incorporates several cutting-edge features and technologies.

One of the standout characteristics of the Huawei WR 22SA is its dual-band Wi-Fi capability. Operating on both 2.4GHz and 5GHz bands, it allows users to enjoy faster speeds and enhance connectivity reliability. The 2.4GHz band is ideal for tasks like web browsing and streaming, while the 5GHz band significantly reduces interference, making it perfect for activities such as online gaming and HD video streaming.

In addition to its dual-band functionality, the WR 22SA employs advanced MIMO (Multiple Input Multiple Output) technology. This innovation optimizes signal transmission and reception by utilizing multiple antennas to enhance performance. As a result, users can experience improved data rates, coverage, and overall network efficiency, with fewer dead zones throughout their premises.

The router also features robust security protocols, including WPA3 encryption, which provides enhanced protection against unauthorized access and potential cyber threats. This is particularly important in today’s increasingly interconnected world, where security is a top priority for many users.

Furthermore, the Huawei WR 22SA is equipped with intelligent Quality of Service (QoS) features that prioritize bandwidth based on activity. By identifying the types of content being accessed, the router can allocate resources effectively, ensuring that high-priority tasks like video conferencing or online gaming receive the necessary bandwidth for optimal performance.

The installation process is user-friendly; it often involves a simple plug-and-play approach, supported by Huawei's intuitive mobile app. This application allows users to easily manage their network settings, monitor device connections, and even set parental controls, making it a family-friendly option.

With its sleek design and compact form factor, the Huawei WR 22SA not only promises impressive performance but also offers aesthetic appeal, fitting well into any environment. Overall, the Huawei WR 22SA is an excellent choice for users looking for a secure, high-performance wireless solution, capable of handling the demands of multiple devices and applications simultaneously.