电牵引采煤机故障分析与处理方法外文文献翻译、中英文翻译

1、外文资料与中文翻译外文资料：Electric traction shearer failure analysis and treatment methodWith the rapid development of the Groups two transformations, the output of raw coal has reached new heights. The shearers used in the three fully mechanized mining face of the Donghuan Mining Company are electric haulage s

2、hearers of Xian Coal Mine Machinery Plant. High output and geological conditions are constantly changing, and some failures often occur during the use of the shearer. This paper takes the MG200/500-AWD shearer as an example to describe in detail the common failures and treatment methods of the shear

3、er.I. Analysis and Treatment of Common Mechanical Failures of Shearer Rocker ArmsThe shearer rocker arm is used as the main part of the shearer, and the rocker arm reducer is mainly composed of a housing, a shaft, a first-stage deceleration idler gear set, a two-axis, three-axle, second-stage decele

4、ration idler gear set and a center gear set. , planetary reducer and other components. Common faults are analyzed as follows:1. Shearer Rocker Spill1) Rocker Planetary Deceleration Floating Seal Oil LeakageThere are several causes of oil leakage in the floating seal of the rocker planetary reducer:

5、(1) The planetary reducer has been working for a long time, and the ball bearings of the tapered roller bearing (bearing model: 32056) have been seriously worn, causing the planet carrier to move axially, and the floating seal clearance has increased. Large, beyond the elastic range of the floating

6、seal “O” type seal ring, causing leakage of the rocker arm. (2) Due to the accumulation of coal dust for a long time, the floating seal “O” seal loses its elasticity after being used for a long time.Treatment methods: (1) replacement of tapered roller bearings, (2) need to clean coal dust and replac

7、e the floating seal O seal ring2) Shaft rocker arm leakageDuring the working process of the shearer, the output shaft spline of the cutting motor is splined with the shaft gear of the rocker reducer, and the motor shaft speed is n=1470r/min. One axis of the rocker arm is a high-speed shaft. . When t

8、he geological conditions of the coal face of the working face abruptly change due to uneven rock or floor layout, the load of the rocker roller may easily cause overheating or damage to the rocker arm directly resulting in the oil seal on the old side (oil seal model: 100*125*12 ) Damage, causing th

9、e shaft to leak oil. It may also be due to incorrect process during loading and unloading, which may cause rapid wear of the oil seal during use and cause leakage of oil on one axis of the rocker arm.Treatment method: dismantling the rocker one-axis coal wall side end cap, according to the compositi

10、on of the structure due to the impact of the first-stage idler, must dismantle the rocker two-axis and idler, easy to remove a shaft replacement bearings and oil seals.2, Shearer rocker bearing damageOne axis is most likely to be damaged in shear bearings of shearer rocker gearboxes. Causes of damag

11、e to the shaft of the rocker arm are as follows: (1) The shaft of the rocker arm is a high-speed rotation shaft. In the case of poor lubrication, the metal content in the oil contains more than the prescribed proportion, which results in accelerated wear of the bearing. (2) If the amount of oil in t

12、he rocker tank is too low or too much oil is added, the temperature of the tank will rise rapidly and the temperature will be high. The lack of rocker cooling water pressure will easily damage the bearing.Treatment methods: (1) Observe the oil color of the rocker box in each shift. Take a little oil

13、 and carefully check the hand to see if there are too many metal shavings, and ensure the oil quality of each oil injection; (2) Pay attention to each shift. Check the amount of oil in the rocker housing, observe the oil temperature and ensure that the cooling water is sufficiently pressurized.Secon

14、d, hydraulic elevation system common fault analysis and processing methodsThe shearer hydraulic elevation system failure, according to the order of steps to determine the basic method: the first step to check whether the fuel tank meets the requirements; the second step to check the suction pipe sea

15、l, whether there is a leak, suction filter screen filter need to be cleaned Whether there are plugging phenomena such as cotton and other impurities; the third step is to check the oil pump discharge pressure, low pressure relief valve, and high pressure safety valve; the fourth step is to check whe

16、ther there is oil leakage in the heightening cylinder or the oil in the front and back of the cylinder leads to direct oil Return to the oil pool.1. Automatically descend after raising the system upAccording to the basic method, the reasons for the analysis are as follows: (1) increase the liquid vo

17、lume before and after the cylinder; (2) the system pipeline is damaged or loose at the joint; (3) the hydraulic lock is not tight or the spool is stuck.Processing methods: (1) Replace the well-adjusted oil cylinders; (2) Replace the damaged management in time, and handle the loosening of the source;

18、 (3) Repair or replacement2. The height adjustment system cannot liftAccording to the basic method, the reasons for the analysis are as follows: (1) The oil level in the fuel tank is too low or the filter is clogged; (2) The gear pump is damaged; (3) The setting value of the safety valve is too low

19、or the safety valve is damaged.Treatment methods: (1) Add qualified hydraulic oil or clean the filter as required; (2) Replace the gear pump; (3) Re-adjust or replace according to the standard.3, heightening system has no riseAccording to the basic method, the reasons for the analysis are as follows

20、: (1) The system overflow valve is stuck; (2) The hydraulic lock is stuck and cannot be opened; (3) The tubing seal or the tubing is damaged.Treatment methods: (1) replace the overflow valve in time; (2) replace the hydraulic lock; (2) replace the damaged seal or tubing.Third, the common failure of

21、the coal mining machine traveling and treatment methods1, the guide shoe and the walking wheel are damagedShearer is an important part of shearer. During the daily use, he is affected by the changes of on-site geological conditions, push-pull, and shift operations. Shearer and walking wheel damage m

22、ay occur during the operation of shearer. The reasons for the analysis are as follows: (1) When the shearer is in operation, the serious sliding of the sliding shoe causes the shearer to tilt toward the side of the coal wall, and the biased guide shoe of the center of gravity lifts, and not only wea

23、rs and catches the scraper blade teeth. The part of the bar will also affect the meshing of the travel wheel, and the bearing of the travel wheel will also be easily damaged. (2) When the guide shoe is seriously worn, the running gear is changed in mesh with the rack, and the running wheel is meshed

24、 with the gear of the rack, and the running wheel is easily damaged. (3) When the scraper rack has a large crankshaft, the shearer guide shoe can easily get stuck when it passes through the two rack joints during operation. At this time, the traction will cause the high-intensity damage of the guide

25、 shoe at the instant of frequency. Incorrect operation caused the sliding shoe to break.Treatment method: First, the rack pin of the scraper conveyor on the outer side of the sliding shoe and the traveling wheel that needs to be disassembled is removed and the racks of the two scraper conveyors are

26、removed. Then use a special tool to remove the travel wheel shaft. At this time, it is necessary to cushion the planetary head of the rocker arm on the side of the replacement part, and then lower the rocker arm to lift the shearer body and replace the damaged parts. After the replacement, the rocke

27、r arm is lifted to align the hole of the running wheel and the center of the hole of the guide shoe, and the walking shaft is installed.Fourth, shearer other common faults and treatment methods1. Shearer hydraulic brake failureThe failure of hydraulic brake of coal mining machine is mainly manifeste

28、d as the shearing resistance of shearer and slow acceleration. The reasons for the analysis are as follows: (1) Serious oil leakage occurs at the seal of the hydraulic brake; (2) The hydraulic pressure of the brake is insufficient for a period of time, so that the hydraulic brake cannot be completel

29、y released, so that the friction plates rub against each other during walking.Treatment methods: (1) Replace the hydraulic brake seal or replace the hydraulic brake; (2) Check the low-pressure fuel pipe for oil leakage and damage.V. ConclusionThere are periodicity and regularity in failure of coal m

30、ining machine, and scientifically grasp the fault location and characteristics of coal mining machine. Many failures in daily safety production can be avoided, reduced or even predicted in advance. In the work, daily inspection and weekly inspection of shearers will be strengthened to strengthen the

31、 sense of responsibility of operators and maintenance personnel and gradually reduce accidents that affect production.中文翻译：电牵引采煤机故障分析与处理方法随着集团“两化”融合快速发展，原煤产量屡创新高。现东欢坨矿业公司三个综采工作面使用的采煤机均为西安煤矿机械厂的电牵引采煤机。高产量和地质条件不断变化，采煤机在使用过程中经常会发生一些故障，本文以MG200/500-AWD型采煤机为例，详细介绍该型采煤机常见故障、处理方法。一、采煤机摇臂常见机械故障分析和处理方法采煤机摇臂作

32、为采煤机主要组成部分，摇臂减速箱主要由壳体、一轴、第一级减速惰轮组、二轴、三轴、第二级减速惰轮组、中心齿轮组、行星减速器等组成。常见故障分析如下：1、采煤机摇臂漏油1）摇臂行星减速浮动密封漏油摇臂行星减速器浮动密封漏油几种原因：（1）行星减速器长时间工作，圆锥滚子轴承（轴承型号：32056）的滚珠严重磨损，造成行星架轴向窜动，浮动密封间隙增大，超出了浮动密封“O”型密封圈的弹性范围，进而造成摇臂漏油。（2）由于长时间煤尘的积累导致浮动密封“O”型密封圈长期使用而失去弹性。处理方法：（1）更换圆锥滚子轴承，（2）需要清理煤尘并更换浮动密封“O”型密封圈2）采煤机摇臂一轴漏油采煤机在工作过程中，截

33、割电机输出轴外花键与摇臂减速箱一轴轴齿轮内花键联接，按电机转速n=1470r/min，采煤机摇臂一轴为高速运转轴。当工作面煤壁地质条件突变遇到岩石或底板布局发生凹凸变化时，摇臂滚筒负载变大极易造成摇臂一轴过热或损坏直接致使老塘侧油封（油封型号：100*125*12）损坏，造成摇臂一轴漏油。也可能由于装卸过程中工艺不正确，造成油封在使用过程中快速磨损造成摇臂一轴漏油。处理方法：拆解摇臂一轴煤壁侧端盖，根据组成结构由于受到第一级惰轮影响，必须同时拆解摇臂二轴和惰轮，便于取去一轴更换轴承和油封。2、采煤机摇臂轴承损坏采煤机摇臂减速箱齿轮轴承中一轴最容易发生损坏。造成摇臂一轴损坏的原因如下：（1）摇臂

34、一轴属于高速旋转轴，在润滑不好、油质中含有金属屑超过规定比例，造成轴承加速磨损。（2）摇臂箱体内油量过少或加油过多均会造成箱体温升快、温度高，摇臂冷却水压力不足非常容易使轴承损坏。处理方法：（1）每班注意观察摇臂箱体内油质颜色，取少许油放在手上仔细查看是否金属屑过多，同时要保证每次注油的油质质量；（2）每班注意查看摇臂箱体内油量，观测油温并保证冷却水足够压力。二、液压调高系统常见故障分析和处理方法采煤机液压调高系统故障，按照顺序分步判断基本方法：第一步检查油箱油量是否符合要求；第二步查看吸油管路密封状况，是否存在泄漏，吸油过滤器滤网是否需清洗，是否存在棉丝等杂物堵塞现象；第三步查看油泵排油压力、低压溢流阀、高压安全阀；第四步检查调