此标准适用于我单位电牵引双滚筒采煤机大修后的电动机，电控装置及电气调速装置的要求。电气部分的范围滚筒采煤机大修的电气部分包括：电动机，电控装置，行走驱动装置中的电器调速装置，机内电缆等。

　　This standard applies to the requirements for the electric motor, electrical control device, and electrical speed control device of our unit's electric traction double drum coal mining machine after major repairs. The electrical part of the overhaul of the drum coal mining machine includes: electric motor, electric control device, electrical speed control device in the walking drive device, and internal cables.

　　一．部件的拆卸，清洁和检测2.1部件的拆卸必须按规定的拆卸工艺，采用转用拆卸工具进行。

　　1、 Disassembly, cleaning, and inspection of components 2.1 Disassembly of components must be carried out according to the prescribed disassembly process, using specialized disassembly tools.

　　2.2拆下的电气零件按规定清洁干燥后做好标记妥善存放。

　　2.2 The removed electrical components should be cleaned and dried according to regulations, marked and stored properly.

　　2.3检测工作应由专业检测人员使用符合要求的检测仪器，设备和精度符合要求的专用检测工具进行。

　　2.3 The testing work should be carried out by professional testing personnel using testing instruments, equipment, and specialized testing tools that meet the requirements for accuracy.

　　二．防爆结构和性能

　　2、 Explosion proof structure and performance

　　3.1隔爆接合面符合GB3836.2——2000的要求，隔爆外壳无损伤；并按照GB3836.2——2000的规定经行磷化处理或防锈蚀处理；

　　3.1 The explosion-proof joint surface meets the requirements of GB3836.2-2000, and the explosion-proof shell is undamaged; And undergo phosphating treatment or rust prevention treatment in accordance with the provisions of GB3836.2-2000;

　　3.2接线端子符合GB3836.2——2000的相关要求；3.3电缆引入装置符合GB3836.2——2000中第十六章及GB3836.2——2000中第十二章的要求；

　　3.2 The wiring terminals shall comply with the relevant requirements of GB3836.2-2000; 3.3 The cable entry device shall comply with the requirements of Chapter 16 of GB3836.2-2000 and Chapter 12 of GB3836.2-2000;

　　3.4损坏的隔爆零件和电缆引入装置和观视窗的密封件应更换，

　　3.4 Damaged explosion-proof parts, cable entry devices, and sealing components of observation windows should be replaced,

　　三．电气间隙和爬电距离电气部件主腔内不同电位间的电气间隙和爬电距离，此方法是指检修电气设备时的选择，考虑安全程度，实际操作中要远大于此值。

　　3、 The electrical clearance and creepage distance refer to the electrical clearance and creepage distance between different potentials inside the main cavity of electrical components. This method is used for the selection of electrical equipment during maintenance, considering the level of safety. In actual operation, it should be much greater than this value.

　　四．冷却

　　4、 Cooling

　　5.1冷却水道应进行疏通和清洗，并进行压力和流量试验，保证冷却水道的耐盐和冷却水的流量符合产品设计要求；

　　5.1 The cooling water channel should be dredged and cleaned, and pressure and flow tests should be conducted to ensure that the salt resistance of the cooling water channel and the flow rate of the cooling water meet the product design requirements;

　　5.2变频器重新固定要清除原有的导热硅脂，重新涂脂；

　　5.2 When re fixing the frequency converter, the original thermal grease should be removed and re greased;

　　5.3冷却风扇应检修，必要时予以更换。五．连接导线电气部件连接导线应逐一检查，根据损坏情况进行更换，并重新接线，保证编号正确，清晰，连接正确，紧固，接触良好。六．电气元器件6.1变压器：对绕组紧固件和连接导线加以紧固，进行干燥，并对三相绕组进行检测。

　　5.3 The cooling fan should be inspected and replaced if necessary. 5、 The connecting wires of electrical components should be inspected one by one, replaced according to the damage situation, and rewired to ensure correct numbering, clarity, correct connection, tightness, and good contact. 6、 Electrical components 6.1 Transformer: Tighten the winding fasteners and connecting wires, dry them, and test the three-phase winding.

　　6.2变频器和可编程控制器可通过试验检查其运行是否正常，如发现异常或故障，查找相关线路和功能模块进行维修和更换；

　　6.2 The frequency converter and programmable controller can be checked for normal operation through testing. If any abnormalities or faults are found, relevant circuits and functional modules can be searched for maintenance and replacement;

　　6.3隔离开关，真空接触器及中间继电器应进行清洁，并进行触头磨损程度，真空开关管真空度，三相触头闭合同步性检查。

　　6.3 Isolation switches, vacuum contactors, and intermediate relays should be cleaned and checked for contact wear, vacuum degree of vacuum switch tubes, and synchronization of three-phase contact closure.

　　七．电动机7.1电动机的拆卸按照一的规定进行，防爆结构按照二的要求进行；

　　7、 The disassembly of electric motor 7.1 shall be carried out in accordance with the provisions of Article 1, and the explosion-proof structure shall be carried out in accordance with the requirements of Article 2;

　　7.2电动机的轴承，传动轴，密封圈，紧固件按照MT/T1003.2——2006的规定；

　　7.2 The bearings, transmission shafts, sealing rings, and fasteners of the electric motor shall comply with the provisions of MT/T1003.2-2006;

　　7.3电动机的绕组无损坏且绝缘电阻符合要求，检测电动机各保护，监测控制元件是否良好，清洁干燥后继续使用。

　　7.3 The winding of the motor is undamaged and the insulation resistance meets the requirements. Check all protections of the motor, monitor whether the control components are in good condition, clean and dry before continuing to use.

　　八．各类标志防爆标志，MA标志，接线腔和主腔内接线标志，各类联锁标志，警示标志以及铭牌应俱全，并加以清洁，否则更换补齐。

　　8、 All kinds of explosion-proof signs, MA signs, wiring signs in the wiring chamber and main chamber, various interlocking signs, warning signs, and nameplates should be complete and cleaned, otherwise they should be replaced and supplemented.

　　九．试验操作，控制，保护以及显示功能试验。中间控制箱面板，遥控的启动，停止，急停，闭锁，油缸伸缩，摇臂升降，瓦斯断电功能，热保护模拟试验，同时观察显示是否正常。

　　9、 Experimental operation, control, protection, and display function tests. Central control box panel, remote start, stop, emergency stop, locking, oil cylinder extension and retraction, rocker arm lifting, gas power-off function, thermal protection simulation test, while observing whether the display is normal.

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