電動(dòng)扳手是以“電”為驅(qū)動(dòng)力的扳手，是指擰緊和拆卸螺栓及螺母的電動(dòng)工具，是一種擰緊高強(qiáng)度螺栓的工具。用于鋼結(jié)構(gòu)橋梁、廠房建筑、化工、發(fā)電設(shè)備安裝大六角頭高強(qiáng)度螺栓施工的初擰、終擰和扭剪型高強(qiáng)度螺栓的初擰，以及對(duì)螺栓緊固件的扭矩或軸向力有嚴(yán)格要求的場(chǎng)合。
Electric wrench is a wrench driven by "electricity". It refers to an electric tool for tightening and removing bolts and nuts. It is a tool for tightening high-strength bolts. It is used for the initial tightening and final tightening of large hexagon head high-strength bolts in the construction of steel structure bridges, factory buildings, chemical industry and power generation equipment, and the initial tightening of torsional shear type high-strength bolts, as well as the occasions where there are strict requirements on the torque or axial force of bolt fasteners.
從結(jié)構(gòu)來說，電動(dòng)扳手有離合器式和沖擊式兩種結(jié)構(gòu)型式。
In terms of structure, the electric wrench has two types of structure: safety clutch type and impact type.
從電源來分，電動(dòng)扳手可分為：帶電池的電動(dòng)扳手、插220V電源的電動(dòng)扳手。
In terms of power supply, electric wrenches can be divided into: electric wrenches with batteries and electric wrenches with 220V power supply.
其中帶電池的電動(dòng)扳手體積小重量輕、使用方便，但是扭矩小，一般用來打普通螺絲。而插220V電源的電動(dòng)扳手相對(duì)來說比帶電池的電動(dòng)扳手要重，還大，主要是扭矩大，可以緊固高強(qiáng)螺栓。以下幾種電動(dòng)扳手都是插電源的電動(dòng)扳手。
The electric wrench with battery is small in size and light in weight, convenient in use, but small in torque, and generally used to make ordinary screws. The electric wrench with 220V power supply is relatively heavier and larger than the electric wrench with battery, mainly because of its large torque, which can fasten high-strength bolts. The following electric wrenches are all electric wrenches plugged into the power supply.
沖擊電動(dòng)扳手就是常說的普通電動(dòng)扳手，主要是初緊螺栓的,它的使用很簡(jiǎn)單,就是對(duì)準(zhǔn)螺栓扳動(dòng)電源開關(guān)就行。
The impact electric wrench is often called an ordinary electric wrench. It is mainly used to tighten the bolts for the first time. It is very simple to use, that is, pull the power switch against the bolt.
扭剪電動(dòng)扳手主要是終緊扭剪型高強(qiáng)螺栓的,它的使用就是用扳手套筒對(duì)準(zhǔn)螺栓梅花頭，扳動(dòng)電源開關(guān),直到把扭剪型高強(qiáng)螺栓的梅花頭打斷為止。常見的扭剪電動(dòng)扳手是槍式的，也有角向的。
The electric wrench for torsional shear is mainly used to tighten the torsional shear type high-strength bolt. It is used to align the wrench socket with the bolt box head and turn the power switch until the box head of the torsional shear type high-strength bolt is broken. The common electric wrench for twist shear is gun type and also angular.
定扭矩電動(dòng)扳手既可初緊又可終緊,它的使用是先調(diào)節(jié)扭矩,再緊固螺栓。常見的定扭矩電動(dòng)扳手也是槍式的，也有角向的。
The fixed torque electric wrench can be used for initial tightening and final tightening. It is used to adjust the torque first, and then tighten the bolts. The common constant torque electric wrench is also gun type and angular.
轉(zhuǎn)角法電動(dòng)扳手主要也屬于定扭矩扳手的一種,它的使用是先調(diào)節(jié)旋轉(zhuǎn)度數(shù),再緊固螺栓。
The angle method electric wrench is also a kind of constant torque wrench. It is used to adjust the rotation degree first, and then tighten the bolts.
角向電動(dòng)扳手是一種專門緊固鋼架夾角部位螺栓的電動(dòng)扳手,它的使用和其他前田電動(dòng)扳手原理一樣。
The angle electric wrench is an electric wrench specially used to fasten the bolts at the angle of the steel frame. Its use principle is the same as that of other Maeda electric wrenches.
超大扭矩電動(dòng)扳手，一般是帶倍增器，也有本身就達(dá)到10000Nm以上的定扭矩電動(dòng)扳手扳手。
The super torque electric wrench is generally equipped with a multiplier, and there are also constant torque electric wrench wrenches that can reach 10000Nm or more.
數(shù)顯電動(dòng)扳手屬于定扭矩電動(dòng)扳手，本身帶著顯示儀，是可以直接讀取扭矩值數(shù)據(jù)的電動(dòng)扳手。
Digital display electric wrench belongs to constant torque electric wrench, with a display, which can directly read torque data.
施工現(xiàn)場(chǎng)注意事項(xiàng)：
Safety precautions on construction site:
1)在接通電源前，需要檢查開關(guān)處于斷開狀態(tài)才能插入。
1) Before turning on the power, check that the switch is disconnected before inserting it.
2)確認(rèn)現(xiàn)場(chǎng)所接電源與電動(dòng)扳手所需要電壓是否相符，是否接有漏電保護(hù)器。
2) Confirm whether the on-site power supply is consistent with the voltage required by the electric wrench, and whether there is a leakage protector connected.
3)根據(jù)螺母大小選擇匹配的套筒，并妥善安裝。
3) Select the matching sleeve according to the nut size and install it properly.
4)電壓過高過低均不宜使用。
4) If the voltage is too high or too low, it should not be used.
5)不要將簡(jiǎn)體當(dāng)做錘擊工具使用。
5) Do not use Simplified Chinese as a hammer tool.
6)不要在手搖桿上增加套桿或撬棒后加力。
6) Do not apply force after adding a sleeve or crowbar to the hand crank.
7)電動(dòng)扳手的金屬外殼需要可靠接地。
7) The metal shell of the electric wrench shall be reliably grounded.
8)檢查電動(dòng)扳手機(jī)身安裝螺釘緊固情況，如果發(fā)現(xiàn)螺釘松了，需要立即重新扭緊。
8) Check the fastening of the mounting screws on the body of the electric wrench. If the screws are found to be loose, retighten them immediately.
9)檢查手持電動(dòng)扳手兩側(cè)手柄是否完好，安裝是否牢固。
9) Check whether the handles on both sides of the hand-held electric wrench are intact and firmly installed.
10)站在梯子上工作或高處作業(yè)應(yīng)做好防止高處墜落措施。
10) Measures shall be taken to prevent falling from heights when working on ladders or at heights.
11)如果作業(yè)場(chǎng)所在遠(yuǎn)離電源的地點(diǎn)，需延伸線纜時(shí)，需要使用容量足夠、安裝合格的延伸線纜。
11) If the work place is far away from the power supply, the extension cable with sufficient capacity and qualified installation shall be used.
普通套筒、精品套筒、防爆套筒、氣動(dòng)套筒、風(fēng)動(dòng)套筒、重型套筒、套裝套筒、加重套筒、加長(zhǎng)套筒、大規(guī)格國(guó)產(chǎn)套筒、進(jìn)口套筒、扭剪套筒、雙聯(lián)套筒、扭矩扳手專用套筒，各種尺寸套筒。
Ordinary sleeve, high-quality sleeve, explosion-proof sleeve, pneumatic sleeve, pneumatic sleeve, heavy sleeve, suit sleeve, weighted sleeve, extended sleeve, large-sized domestic sleeve, imported sleeve, torsional shear sleeve, duplex sleeve, special sleeve for torque wrench, and sockets of various sizes.
柴油發(fā)電機(jī)組一般運(yùn)行500h后應(yīng)更換機(jī)油一次，但有時(shí)候未到更換期，或還沒用多長(zhǎng)時(shí)間就出現(xiàn)機(jī)油變稀、雜質(zhì)增多現(xiàn)象，無法繼續(xù)使用。 柴油發(fā)電機(jī)組機(jī)油為何會(huì)變質(zhì)過快 ①、機(jī)油牌號(hào)不對(duì)、質(zhì)量達(dá)不到要求，一般增壓和標(biāo)定轉(zhuǎn)速大于2000r/min的柴油發(fā)電機(jī)應(yīng)選用CC級(jí)以上的機(jī)油； ②、柴油機(jī)發(fā)電機(jī)技術(shù)狀況不好，竄氣、竄油、配合間隙過大或油溫過高； ③、柴油機(jī)發(fā)電機(jī)經(jīng)常在低溫、低負(fù)荷、低速下運(yùn)轉(zhuǎn)，活塞變形量不夠，燃燒不完全，有柴油沿缸 壁進(jìn)入油底殼使機(jī)油稀釋變質(zhì)； ④、廢氣進(jìn)入油底殼凝結(jié)成水分和酸性物質(zhì)，使機(jī)油變質(zhì)； ⑤、機(jī)油濾芯臟，未經(jīng)濾清的臟機(jī)油進(jìn)入潤(rùn)滑部位，加速了零件的磨損。 ⑥、濾芯密封圈破裂而發(fā)生內(nèi)漏，一部分機(jī)油未經(jīng)濾芯而直接通過濾清器而造成機(jī)油變質(zhì)。
Generally, the engine oil of the diesel generator set should be replaced once after 500h of operation, but sometimes the replacement period is not reached, or the engine oil has become thinner and impurities have increased within a short period of time, which makes it impossible to continue to use. Why the engine oil of the diesel generator set deteriorates too fast ①. The engine oil is of the wrong brand and the quality does not meet the requirements. Generally, the diesel generator with supercharging and rated speed greater than 2000r/min should use the engine oil above CC level; ② The diesel generator is in poor technical condition, with gas and oil leakage, too large fitting clearance or too high oil temperature; ③ The diesel engine generator often operates at low temperature, low load and low speed. The piston deformation is not enough and the combustion is incomplete. Diesel enters the oil pan along the cylinder wall to dilute and deteriorate the oil; ④ Waste gas enters the oil pan and condenses into water and acid substances, which will deteriorate the engine oil; ⑤ The oil filter element is dirty, and the unfiltered dirty oil enters the lubricating part, which accelerates the wear of parts. ⑥ . The sealing ring of the filter element is broken and internal leakage occurs. Some engine oil directly passes through the filter element without passing through the filter element, causing deterioration of the engine oil.
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