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扭剪型高强螺栓的梅花头为什么是一次性使用?

来源:https://www.xjnwz.com 日期:2021-08-25 发布人:admin

扭剪型高强螺栓,必须采用电动力矩扳手来进行安装。只有当力矩达到要求后,高强螺栓的梅花头才会被拧掉,这样可以保证所使用的螺栓达到必须的预紧力从而保证性能。所以在工程中可以通过检查梅花头是否还在还判断高强螺栓是否起到作用,而扭剪型高强螺栓都是一次性也是因为这个原因.

Torsional shear type high-strength bolts must be installed with an electric torque wrench. Only when the torque meets the requirements, the plum blossom head of the high-strength bolt will be screwed off, so as to ensure that the bolt used reaches the necessary preload, so as to ensure the performance. Therefore, in the project, we can judge whether the high-strength bolts play a role by checking whether the plum blossom head is still in use, and it is also for this reason that the torsional shear high-strength bolts are disposable
1、初拧扳手,可用电动扳手也可用手动带响扳手。但无论用哪种扳手施工前都必须进行标定,以便控制初拧扭距值。手动扳手作为终拧工具时,必须每班进行标定,并做好标定记录。
1. The initial tightening wrench can be an electric wrench or a manual ring wrench. However, no matter which wrench is used, it must be calibrated before construction in order to control the initial torque value. When the manual wrench is used as the final tightening tool, it must be calibrated every shift and the calibration record must be made.
2、终柠板手:扭剪型高强螺栓是一种自标量型螺栓,因此终拧只须把高强螺栓尾部螺栓头拧掉即可,扳手不用标定。
2. Final lemon wrench: the torsion shear high-strength bolt is a self scalar bolt, so the final tightening only needs to screw off the bolt head at the tail of the high-strength bolt, and the wrench does not need to be calibrated.
3、终拧紧固时应注意,待梅花头全部套入套筒后,才能按下电动扳手开关,若内套筒只套入梅花头尺寸的1/3~1/2长度时按下电动扳手开关,将会造成梅花头打滑,并且影响套筒的使用寿命。
3. During final tightening, it should be noted that the electric wrench switch can only be pressed after all the ring heads are sleeved into the sleeve. If the inner sleeve is sleeved into only 1 / 3 ~ 1 / 2 of the length of the ring head, pressing the electric wrench switch will cause the ring head to slip and affect the service life of the sleeve.
4、紧固时,终拧电动扳手应和构件摩擦面保持垂直,扳手倾斜是很容易导致螺栓尾部梅花头打滑,并易卡壳。
4. When tightening, the final tightening electric wrench shall be perpendicular to the friction surface of the component. The inclination of the wrench is easy to cause the plum blossom head at the tail of the bolt to slip and jam.
以上就是扭剪扳手厂家为大家介绍的相关内容。希望就可以帮助到您,更多精彩内容可以直接来电咨询!
The above is the relevant content introduced by the torsion shear wrench manufacturer. I hope it can help you. For more wonderful content, you can call directly for consultation!