In life, we often use tools in addition to screwdrivers is a wrench, whether furniture devices or industrial construction are required to use a variety of wrenches.

　　常见的几种扳手有：活扳手、梅花扳手、L型扳手和内六角扳手等。从运用方式来看，这些扳手都属于普通扳手（手动扳手）。在现代工业消费中，电动扳手适用范围越来越广，常被用于机械、汽车、建筑和机电等行业中。那么，同样作为扳手，手动扳手和电动扳手该选哪个呢？

　　Common wrenches are: flexible wrench, plum wrench, L-type wrench and inner hexagonal wrench. These wrenches belong to common wrenches (manual wrenches) in terms of their use. In modern industrial consumption, electric wrenches are more and more widely used in machinery, automobile, construction and electromechanical industries. So, as a wrench, which one should we choose, the manual wrench or the electric wrench?

　　比照根本定义

　　By comparison with the fundamental definition

　　手动扳手又叫普通扳手，是一种常用的装置与拆卸工具，它应用杠杆原理拧转螺栓、螺钉、螺母、其他螺纹紧持螺栓或螺母的启齿或套孔固件的手工工具。

　　Manual wrench, also known as ordinary wrench, is a commonly used device and disassembly tool. It uses the lever principle to twist bolts, bolts, nuts and other threads to hold the teeth of bolts or nuts or the fixture of sleeve holes.

　　扭剪扳手

　　Torsion wrench

　　电动扳手是指拧紧和旋松螺栓及螺母的电开工具，以电源或电池为动力，是一种拧紧高强度螺栓的工具。主要应用于钢构造装置行业，特地装置钢构造高强螺栓（高强度螺栓是用来衔接钢构造接点的，通常是用螺栓群的方式呈现）。

　　Electric wrench refers to the power-on tool for tightening and loosening bolts and nuts, powered by power supply or battery, and is a tool for tightening high-strength bolts. Mainly used in the steel structure equipment industry, special equipment steel structure high-strength bolts (high-strength bolts are used to connect the steel structure joints, usually in the form of bolt groups).

　　比照扳手类型

　　Contrast wrench type

　　手动扳手分类较多，细分为：单头呆扳手、双头呆扳手、活动扳手、梅花扳手、多用扳手、敲击扳手、套筒扳手、套筒起子、扭力扳手、扭矩扳手、十字扳手、棘轮扳手、钩形扳手、内六角扳手、内四方扳手、手动离合式扭矩扳手、管子扳手、T型扳手、L型扳手、三叉扳手、月牙扳手、油管扳手、轮胎扳手、火花塞扳手、滤清器扳手、组合扳手、其他扳手等。扭矩扳手分为讯响扳手、指针扳手、数显扳手。

　　There are many kinds of manual wrenches, which can be divided into: single-ended wrench, double-ended wrench, movable wrench, plum wrench, multi-purpose wrench, knock wrench, socket wrench, socket wrench, socket wrench, torque wrench, cross wrench, ratchet wrench, hook wrench, hexagonal wrench, square wrench and clutch wrench. Spanner, pipe wrench, T-type wrench, L-type wrench, trigeminal wrench, crescent wrench, tubing wrench, tire wrench, spark plug wrench, filter wrench, combination wrench, other wrenches, etc. Torque wrench can be divided into signal wrench, pointer wrench and digital wrench.

　　扭剪扳手

　　Torsion wrench

　　电动扳手分类较少，分为：平安离合器式和冲击式两种构造型式。

　　Electric wrenches are less classified into two types: safety clutch type and impact type.

　　比照扳手特性

　　Contrast wrench characteristics

　　手动扳手具有操作简单、价钱低、劳动强度大的特性。

　　Manual wrench has the characteristics of simple operation, low price and high labor intensity.

　　电动扳手具有操作便当、价钱高、省时省力的特性。

　　The electric wrench has the characteristics of convenient operation, high price, time saving and labor saving.

　　比照行业用处

　　Use for industry comparison

　　手动扳手操作简单，劳动强度大，普通用于普通生活中，比方家具、电器、办公设备等装置。

　　Manual wrench is simple to operate and labor intensive. It is commonly used in ordinary life, such as furniture, electrical appliances, office equipment and other devices.

　　电动扳手用处相对教泛，目前已应用于汽车、拖拉机、电机电器、动力机械、阀门、水泵、纺织机械等制造业的装配工作中，以及化工、水泥预制件、塑料成型等作业中。另外，电动扳手在铁道、桥梁、建筑等工程中也发挥着重要作用。

　　Electric wrenches are relatively versatile. They have been used in the assembly of automobile, tractor, motor and electrical appliances, power machinery, valves, pumps, textile machinery and other manufacturing industries, as well as in chemical, cement prefabricated parts, plastic forming and other operations. In addition, electric wrenches also play an important role in railway, bridge, construction and other projects.

　　总的说来，假如你想省力就选电动扳手，假如你想省钱就选手动扳手。但大家在选购扳手时，不能只关注价钱，由于不同类型扳手的拉力和扭矩是存在差别的，运用时产生的摩擦力强度也不同。假如平常生活当选用电动扳手，就可能会呈现拧过头的现象；假如机械工业当选用手动扳手，就会呈现不结实的现象，埋下平安隐患。

　　Generally speaking, if you want to save energy, choose the electric wrench, and if you want to save money, choose the manual wrench. But when we choose and buy wrenches, we can not only pay attention to the price, because the pull and torque of different types of wrenches are different, and the friction strength produced in use is also different. If elective electric wrench is used in ordinary life, it may appear over-twisting phenomenon; if elective manual wrench is used in machinery industry, it will appear unsound phenomenon and bury hidden danger of safety.

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