The test method of electric torque wrench mainly adopts simple test equipment, which is realized by manual loading, and has the problems of low precision, simple function and low efficiency. Foreign special torque testing equipment can achieve high detection efficiency, but it is expensive and difficult to maintain and expand. The above factors seriously affect the production and inspection of torque wrench. In modern measurement and control technology, intelligent instruments, bus instruments, virtual instruments and other microcomputer measurement and control instruments make full use of the advantages of computer software and hardware, which not only enhances the function of parameter measurement and processing, but also improves the performance. Indicators.

由于尚未建立工業(yè)應(yīng)用中螺栓緊固的相關(guān)標(biāo)準(zhǔn)，并且人力資源相對(duì)便宜，因此許多風(fēng)力渦輪機(jī)安裝單元仍保留相對(duì)落后的螺栓緊固方法。傳統(tǒng)的螺栓擰緊方法，即增加錘擊力的扳手，操作簡(jiǎn)單，但無(wú)法獲得準(zhǔn)確可靠的螺栓殘余載荷，嚴(yán)重威脅了風(fēng)力發(fā)電機(jī)的運(yùn)行。

As China has not yet established the relevant standards for bolt tightening in industrial applications, and the human resources are relatively cheap, many wind turbine installation units still retain relatively backward bolt tightening methods. The traditional bolt tightening method, that is, the wrench to increase the hammering force, is simple to operate, but it can not obtain accurate and reliable bolt residual load, which seriously threatens the safe operation of wind turbine.

隨著國(guó)內(nèi)風(fēng)力發(fā)電行業(yè)的發(fā)展以及對(duì)風(fēng)機(jī)采購(gòu)和維護(hù)投資的增加，對(duì)傳統(tǒng)螺栓緊固方法的改革和工具的提供勢(shì)在必行。使用普通的敲擊扳手或扭矩倍增器或液壓扳手進(jìn)行初始鎖定后，根據(jù)螺栓強(qiáng)度等級(jí)和其他條件比較螺栓和螺母尺寸及扭矩值表，然后使用高精度扭矩扳手進(jìn)行精確的鎖定操作，可以大大提高風(fēng)扇的安 全性。

With the development of domestic wind power industry and the increase of investment in wind turbine procurement and maintenance, it is imperative to reform the traditional bolt fastening method and provide advanced tools. After initial locking with common knocking wrench, torque multiplier or hydraulic wrench, the size and torque table of bolt and nut are compared according to bolt strength grade and other conditions, and then the high-precision torque wrench is used for precise locking operation, which can greatly improve the safety of fan.

電動(dòng)扭矩扳手作為一種精 密設(shè)備，風(fēng)力渦輪機(jī)在自然條件差的領(lǐng)域中可以長(zhǎng)期運(yùn)行。為了確保風(fēng)力渦輪機(jī)的長(zhǎng)期有用運(yùn)行，有必要注意風(fēng)力渦輪機(jī)上的每個(gè)細(xì)節(jié)，并仔細(xì)維護(hù)每個(gè)組件。

As a kind of precision equipment, electric torque wrench can be used in the field of poor natural conditions for a long time. In order to ensure the long-term useful operation of the wind turbine, it is necessary to pay attention to every detail on the wind turbine and carefully maintain each component.

風(fēng)力渦輪機(jī)的外觀主要由四個(gè)部分組成：塔架，機(jī)艙，輪轂和葉片。并且這四個(gè)部分需要通過(guò)螺栓連接。因此，在風(fēng)力渦輪機(jī)的安裝過(guò)程中，螺栓緊固的有用性將直接影響未來(lái)風(fēng)力渦輪機(jī)的正常運(yùn)行和發(fā)電效率，尤其是塔架，機(jī)艙轉(zhuǎn)向座椅軸承和刀片。

The appearance of the wind turbine is mainly composed of four parts: Tower, cabin, hub and blade. And these four parts need to be connected by bolts. Therefore, in the installation process of wind turbines, the usefulness of bolt tightening will directly affect the normal operation and power generation efficiency of future wind turbines, especially the tower, engine room, steering seat, bearing and blade.

氣動(dòng)扭矩扳手可提供精 確的扭矩控制，重復(fù)精度為±5％，配備傳感器和電磁閥開(kāi)關(guān)，重復(fù)精度可達(dá)到±2％。氣動(dòng)扭矩扳手由于具有體積小，重量輕，單位重量輸出功率高等特點(diǎn)，廣泛用于礦山，石油化工，鐵路，建筑等領(lǐng)域，可實(shí)現(xiàn)高扭矩輸出，反作用力小，對(duì)環(huán)境污染小，且低廉。重型車輛的組裝和維護(hù)，重型設(shè)備的裝卸等廣泛用于產(chǎn)品生產(chǎn)和組裝線，特別是在需要大扭矩的地方。

The pneumatic torque wrench can provide precise torque control with a repeatability of ± 5%. Equipped with sensor and solenoid valve switch, the repeatability can reach ± 2%. Pneumatic torque wrench is widely used in mining, petrochemical, railway, construction and other fields because of its small volume, light weight and high output power per unit weight. It can achieve high torque output, small reaction force, small environmental pollution and low price. Assembly and maintenance of heavy vehicles, loading and unloading of heavy equipment are widely used in product production and assembly lines, especially in places where large torque is required.