电动扳手不是伏数越大就越有力。
The electric wrench is not the stronger the voltage is.
1、劲大，代表扭矩大。
1. Great strength means great torque.
2、电机和减速器的扭矩（N·m）= 电机额定功率（W）/(2 * π * 转速/60)。
2. Torque of motor and reducer (n · m) = rated power of motor (W) / (2 * π * speed / 60).
3、从第2条可以看出，电机功率越大，转速越低，扭矩越大，操作中转速一般不会差异很大，关键就在于电机功率的大小了。
3. It can be seen from Article 2 that the higher the power of the motor, the lower the rotation speed and the greater the torque. Generally, the rotation speed will not vary greatly during operation. The key lies in the power of the motor.
4、电压大对于减少电流，降低能耗有益，但会使电池数量、重量、体积增加。
4. Large voltage is beneficial to reduce current and energy consumption, but it will increase the number, weight and volume of batteries.
在生产生活中我们经常会发现，用于连接紧固的螺栓在经过一段时间后松动了，要知道螺栓松动可造成的影响有大有少，为了防止螺栓松动，我们应该怎么做呢？防止螺栓松动有几种方法？下面沃顿液压扳手来介绍一下。
In production and life, we often find that the bolts used for connection and fastening are loosened after a period of time. We should know the impact of bolt loosening. What should we do to prevent bolt loosening? How many methods are there to prevent bolts from loosening? Wharton hydraulic wrench is introduced below.
一、螺栓松动的影响:
1、 Effect of bolt loosening:
一颗螺栓松动可能会致使整个生产设备陷入停滞状态，并使企业遭受损失巨大，甚在一些应用中，松动的螺栓会导致严重的事故发生。那么为了防止螺栓松动，我们应该怎么做呢？防止螺栓松动有几种方法？
A loose bolt may cause the whole production equipment to stagnate, and cause the enterprise to suffer huge losses. Even in some applications, a loose bolt may cause serious safety accidents. So what should we do to prevent the bolts from loosening? How many methods are there to prevent bolts from loosening?
二、防止螺栓松动有几种方法：
2、 There are several methods to prevent bolt loosening:
液压扳手根据防松原理可以分为靠摩擦力、直接锁住和破坏螺纹运动关系三种。
According to the anti loosening principle, hydraulic wrenches can be divided into three types: relying on friction, directly locking and destroying the thread movement relationship.
1.摩擦防松：在螺纹副间产生一个不随外力变化的正压力，以产生一个可以阻止螺纹副相对转动的摩擦力。这种正压力可以通过轴向或横向或同时两向压紧螺纹副来实现。
1. Friction anti loosening: a positive pressure that does not change with the external force is generated between the thread pairs to generate a friction force that can prevent the relative rotation of the thread pairs. This positive pressure can be achieved by axially or laterally or simultaneously pressing the screw pair in two directions.
2.直接锁住：用止动件直接限制螺纹副相对转动。
2. Direct locking: use the stopper to directly restrict the relative rotation of the thread pair.
3.破坏螺纹运动关系：在拧紧后采用冲点、焊接、粘结等方法，使螺纹副失去运动特性而连接成为不可拆卸的连接。
3. Destroy the thread movement relationship: after tightening, punch point, welding, bonding and other methods are adopted to make the thread pair lose its movement characteristics and become a non detachable connection.
采用细牙螺纹，利用其升角小而达成摩擦防松或同时采取两种防松方法，互为补充等，都是较好的设计构思。航空航天机械用螺栓螺母其螺纹直径大于十mm的和许多承受变载的机械用螺栓螺母，都采用细牙的原因之一也在此。常用液压扳手螺纹连接的防松方法和技巧，对螺钉连接和双头螺柱连接也适用。液压拉伸器与液压扳手都是紧固拆卸螺栓的重要工具，它们广泛应用于船舶，石油化工，建筑，电力，矿山，冶金等行业的施工，维检，抢修等工作中。它们的使用不仅可以减轻劳动强度，提高工作效率，而且极大的提高安装质量，也有利于施工现场及工作效率的管理。
It is a good design idea to adopt fine thread, use its small rise angle to achieve friction anti loosening, or adopt two anti loosening methods at the same time to complement each other. This is one of the reasons why fine teeth are used for bolts and nuts for aerospace machinery, whose thread diameter is more than 10 mm, and many bolts and nuts for machinery under variable loads. The anti loosing methods and techniques of common hydraulic wrench thread connection are also applicable to screw connection and double headed stud connection. Hydraulic tensioner and hydraulic wrench are important tools for fastening and disassembling bolts. They are widely used in the construction, maintenance and repair of shipbuilding, petrochemical, construction, electric power, mining, metallurgy and other industries. Their use can not only reduce the labor intensity and improve the work efficiency, but also greatly improve the installation quality, which is also conducive to the management of safety and work efficiency at the construction site.
The above is the detailed introduction of the torsion shear wrench. I hope it will help you. If you have any questions, please contact us. We will provide you with services in a professional manner https://www.xjnwz.com
