Twist shear high-strength bolts belong to self scalar bolts, and their construction tightening torque is determined by the diameter of the incision between the screw and the end of the bolt's plum blossom head, which is controlled by its torque. During construction, a torsion shear electric wrench should be used, which is simple to use by aligning the bolt and turning the power switch. The electric torque wrench is mainly used for final tightening torque shear high-strength bolts. Its use is to align the bolt and pull the power switch until the plum blossom head of the torque shear high-strength bolt is broken.

该电动扳手配有内外两个套管，外套筒扭螺母，对螺栓施加扭矩，内套筒反向扭梅花头，两个扭矩大小相等，方向相反，尾部梅花头拧掉，读出预拉力值。扭剪型高强度螺栓更具有施工方便，检查直观，受力良好，保障质量等优点，在高层钢结构工程上大部分都采用这种形式。

This electric wrench is equipped with two inner and outer sleeves. The outer sleeve twists the nut to apply torque to the bolt, and the inner sleeve twists the plum blossom head in the opposite direction. The two torques are equal in magnitude and opposite in direction, and the plum blossom head is unscrewed at the tail end to read the pre tension value. Twist shear high-strength bolts have the advantages of convenient construction, intuitive inspection, good stress, and quality assurance. They are mostly used in high-rise steel structure engineering.

数显扭矩扳手和机械式扭力扳手主要的差异在于数显示扭矩扳手有其精准度与稳定度，这是机械式扭力扳手所望尘莫及的。

The main difference between digital torque wrenches and mechanical torque wrenches lies in their precision and stability, which are unmatched by mechanical torque wrenches.

数显示扭矩扳手的准确度0.5%~3%，机械式扭力扳手为3%~6%。

The accuracy of the numerical display torque wrench is 0.5%~3%, while that of the mechanical torque wrench is 3%~6%.

其另外一个差异在于警报的方式不同。机械式扭力扳手皆由弹性机械结构的跳脱或是打滑方式来警报使用者已达到目标扭力。而数显示扭力扳手的警报方式则比较多元，主要有：震动装置、灯光提示、声音提醒、数字显示等方式。

Another difference lies in the way the alarm is triggered. Mechanical torque wrenches are alerted to the user that the target torque has been reached by the elastic mechanical structure's jumping or slipping method. The alarm methods for torque wrenches with numerical display are relatively diverse, mainly including vibration devices, light prompts, sound prompts, digital displays, and other methods.

震动装置：当达到目标扭力时，扭矩扳手内的震动马达会开始震动，而震动的触感会让使用者反射性动作地将手从手柄上放开，已达到停止施力的目的。在吵杂的作业环境中，震动装置警报效果更好。

Vibration device: When the target torque is reached, the vibration motor inside the torque wrench will start to vibrate, and the tactile sensation of the vibration will cause the user to reflexively release their hand from the handle, achieving the goal of stopping the force application. In noisy work environments, vibration devices have better alarm effects.

灯光提示：在使用扭力扳手时，LED会依照当前产生的扭力值与目标扭力值的差距，产生不同频率快慢闪烁;当达到目标扭力时，警示灯会持续亮起。当使用者看到时，停止施力，此时螺丝已精准达到目标扭力。在明亮度较差的作业环境时，灯光提示效果则为明显。

Light prompt: When using a torque wrench, the LED will flash at different frequencies based on the difference between the current torque value and the target torque value; When the target torque is reached, the warning light will continue to light up. When the user sees it, stop applying force, and the screw has accurately reached the target torque. When working in environments with poor brightness, the lighting prompt effect is more pronounced.

声音提醒：在使用扭力扳手时，蜂鸣器会依照当前产生的扭力值与目标扭力值的差距，产生不同频率发出哔鸣声若当前产生的扭力值越靠近目标扭力值，蜂鸣器的哔 鸣声频率会越快速，当达到目标扭力时，蜂鸣器会持续发出长哔鸣声。使用者可以依照声音频率来控制施加扭力的程度;当使用者听到长哔鸣声时，停止施力，此时螺丝已精准达到目标扭力。在一般環境下，声音提醒是为有效率的一种方式。

Sound reminder: When using a torque wrench, the buzzer will emit a beep at different frequencies based on the difference between the current torque value and the target torque value. If the current torque value is closer to the target torque value, the beep frequency of the buzzer will be faster. When the target torque is reached, the buzzer will continue to emit a long beep sound. Users can control the degree of torque application based on sound frequency; When the user hears a long beep, stop applying force, and the screw has accurately reached the target torque. In general environments, sound reminders are an efficient way.

数字显示：在使用扭力扳手时，LCD显示屏会显示当下所产生的扭力;施加越大的力量，数字则会逐渐增加。眼睛直视著LCD显示屏上的数字变化，可以更精准地控制欲产生的扭力，并将误差的程度降到低处。此方式特别适合执行于要求高精度、高品质的组装修缮作业。

Digital display: When using a torque wrench, the LCD display screen will display the current torque generated; The greater the force applied, the more the number will gradually increase. Gazing directly at the digital changes on the LCD screen allows for more precise control of the desired torque and reduces the degree of error. This method is particularly suitable for performing group decoration and repair operations that require high precision and quality.

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