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、初擰扳手，可用電動(dòng)扳手也可用手動(dòng)帶響扳手。但無(wú)論用哪種扳手施工前都必須進(jìn)行標(biāo)定，以便控制初擰扭距值。手動(dòng)扳手作為終擰工具時(shí)，必須每班進(jìn)行標(biāo)定，并做好標(biāo)定記錄。

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、終檸板手：扭剪型高強(qiáng)螺栓是一種自標(biāo)量型螺栓，因此終擰只須把高強(qiáng)螺栓尾部螺栓頭擰掉即可，扳手不用標(biāo)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、終擰緊固時(shí)應(yīng)注意，待梅花頭全部套入套筒后，才能按下電動(dòng)扳手開(kāi)關(guān)，若內(nèi)套筒只套入梅花頭尺寸的1/3～1/2長(zhǎng)度時(shí)按下電動(dòng)扳手開(kāi)關(guān)，將會(huì)造成梅花頭打滑，并且影響套筒的使用壽命。

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、緊固時(shí)，終擰電動(dòng)扳手應(yīng)和構(gòu)件摩擦面保持垂直，扳手傾斜是很容易導(dǎo)致螺栓尾部梅花頭打滑，并易卡殼。

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.

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