Steel structure bolt is a kind of high-strength bolt, which is also a kind of standard parts. The fastening performance is relatively good. It is used in steel structure and engineering to make the fastening effect.

鋼結(jié)構(gòu)螺栓分為扭剪型高強(qiáng)螺栓和大六角高強(qiáng)螺栓,大六角高強(qiáng)螺栓屬于普通螺絲的高強(qiáng)度級(jí),而扭剪型高強(qiáng)螺栓則是大六角高強(qiáng)螺栓的改進(jìn)型,為了更好施工.

Steel structure bolts are divided into torsional shear high-strength bolts and large hexagon high-strength bolts. Large hexagon high-strength bolts belong to the high-strength grade of ordinary screws, while torsional shear high-strength bolts are the improved type of large hexagon high-strength bolts for better construction

鋼結(jié)構(gòu)螺栓的施工需要先初緊后終緊,初緊鋼結(jié)構(gòu)螺栓需用沖擊型電動(dòng)扳手或扭矩可調(diào)電動(dòng)扳手;而終緊鋼結(jié)構(gòu)螺栓有嚴(yán)格的要求,終緊扭剪型鋼結(jié)構(gòu)螺栓需要用扭剪型電動(dòng)扳手,終緊扭矩型鋼結(jié)構(gòu)螺栓需要用扭矩型電動(dòng)扳手.大六角鋼結(jié)構(gòu)螺栓 由一個(gè)螺栓，一個(gè)螺母，兩個(gè)墊圈組成

The construction of steel structure bolts requires initial tightening before final tightening. The initial tightening of steel structure bolts requires impact electric wrench or torque adjustable electric wrench; The final tightening of steel structure bolts has strict requirements. The final tightening of torsion shear steel structure bolts needs to use torsion shear electric wrench, and the final tightening of torque steel structure bolts needs to use torque electric wrench The large hexagonal structural bolt is composed of one bolt, one nut and two washers

當(dāng)螺母的端面與工件端面接觸后，阻力矩急劇上升，轉(zhuǎn)運(yùn)的螺旋槽使?jié)L珠帶著主動(dòng)沖擊塊克服摩擦力和工作彈簧的壓力向后移動(dòng)，使主動(dòng)沖擊塊與從動(dòng)沖擊塊互相嚙合的牙脫離嚙合。此時(shí)，從動(dòng)沖擊塊不移動(dòng)，而主動(dòng)部擊塊繼續(xù)向后移動(dòng)。在轉(zhuǎn)過(guò)從動(dòng)沖擊塊的牙后，由于工作彈簧的作用使主動(dòng)沖擊塊瞬時(shí)前移，并沿螺旋槽產(chǎn)生一個(gè)角加速度，主動(dòng)沖擊塊撞擊從動(dòng)部擊塊，兩牙產(chǎn)生碰撞。然后螺旋槽又使?jié)L珠和主動(dòng)沖擊塊后移，脫離嚙合。這樣周而復(fù)始產(chǎn)生一次又一次的碰撞，獲得所需的沖擊力矩，使螺母緊固。

When the end face of the nut is in contact with the end face of the workpiece, the resistance moment rises sharply, and the transferred spiral groove makes the ball move backward with the active impact block to overcome the friction and the pressure of the working spring, so that the teeth meshed between the active impact block and the driven impact block are disengaged. At this time, the driven impact block does not move, but the driving part impact block continues to move backward. After turning the teeth of the driven impact block, the active impact block moves forward instantaneously due to the action of the working spring, and an angular acceleration is generated along the spiral groove. The active impact block strikes the driven impact block, and the two teeth collide. Then the spiral groove moves the ball and the active impact block backward and out of engagement. In this way, collisions occur again and again to obtain the required impact torque and tighten the nut.

如將電源開(kāi)關(guān)轉(zhuǎn)到反轉(zhuǎn)位置即可擰出螺母。雙重絕緣單相串勵(lì)電動(dòng)板手在操作手柄上裝有正反開(kāi)關(guān)旋鈕“R”和“L”。當(dāng)旋鈕到R時(shí)啟動(dòng)開(kāi)關(guān)可以將螺栓擰緊，當(dāng)旋鈕到L時(shí)啟動(dòng)開(kāi)關(guān)可以將螺栓松動(dòng)。

If the power switch is turned to the reverse position, the nut can be screwed out. The double insulated single-phase series excitation electric wrench is equipped with positive and negative switch knobs "R" and "L" on the operating handle. When the knob is turned to R, the start switch can tighten the bolt, and when the knob is turned to L, the start switch can loosen the bolt.

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