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高强螺栓的安装要求

来源:https://www.xjnwz.com 日期:2022-07-18 发布人:wanzhong

1、高强度螺栓连接副组装时,螺母带圆台面的一侧应朝向垫圈有倒角的一侧。

1. When assembling the high-strength bolt connection pair, the side of the nut with a round table should face the side with chamfer of the washer.
对于大六角头高强度螺栓连接副组装时,螺栓头下垫圈有倒角的一侧应朝向螺栓头。
For the assembly of large hexagon head high-strength bolt connection pair, the chamfered side of the washer under the bolt head should face the bolt head.
2、安装高强度螺栓时,严禁强行穿入螺栓(如用锤敲打)。如不能自由传入时,该孔应用丝锥修整,修整后孔的大直径应小于1.2倍的螺栓直径。修孔时,为了防止铁屑落入其中,铰孔前应将四周螺栓全部拧紧,是去密贴后再进行。严禁气割扩孔。
2. When installing high-strength bolts, it is strictly forbidden to forcibly penetrate the bolts (such as knocking with a hammer). If it cannot be transferred freely, the hole shall be trimmed with a tap, and the large diameter of the trimmed hole shall be less than 1.2 times the bolt diameter. When repairing holes, in order to prevent iron filings from falling into them, tighten all the bolts around before reaming, and then do it after removing the close fitting. Gas cutting and hole expansion are strictly prohibited.
3、安装高强度螺栓时,构件的摩擦面应保持干燥,不得在雨中作业。
3. When installing high-strength bolts, the friction surface of the components should be kept dry and should not be operated in the rain.
4、高强度螺栓拧紧时,只准在螺母上施加扭矩。只有在空间有限制时允许拧螺栓。
4. When the high-strength bolt is tightened, torque is only allowed to be applied on the nut. It is allowed to screw bolts only when space is limited.
5、高强度螺栓的拧紧分为初拧、复拧、终拧。初拧扭矩为施工扭矩的50%,用快速扳手对称地进行一次螺栓紧固。复拧扭矩等于初拧扭矩,用液压扳手按照对称星状的顺序紧固塔筒连接螺栓。为防止遗漏,对初拧、复拧、终拧后的高强螺栓,应使用颜色在螺帽上涂上标记。对检查后,高强度螺栓再用另一种颜色在螺帽上涂上标记。
5. The tightening of high-strength bolts is divided into initial tightening, re tightening and final tightening. The initial tightening torque is 50% of the construction torque. Tighten the bolts symmetrically with a fast wrench. The re tightening torque is equal to the initial tightening torque, and the hydraulic wrench is used to tighten the tower connecting bolts in a symmetrical star order. In order to prevent omission, the high-strength bolts after initial tightening, re tightening and final tightening should be marked on the nut with color. After inspection, high-strength bolts are marked on the nut with another color.
6、高强度螺栓在初拧、复拧、终拧时,连接处的螺栓应按一定顺序施拧,一般应由螺栓群中顺序向外拧紧。
6. During the initial tightening, re tightening and final tightening of high-strength bolts, the bolts at the connection should be tightened in a certain order, and generally should be tightened outward in the order of the bolt group.
7、高强度螺栓的初拧、复拧、终拧应在同完成。不可在二天以后才完成终拧。
7. The initial tightening, re tightening and final tightening of high-strength bolts shall be completed on the same day. Do not finish the final screwing after two days.
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