往復(fù)給煤機(jī)現(xiàn)狀畢業(yè)論文外文翻譯

1、reciprocation stokers present situationreciprocation types stoker its own structure superiority1 structure simple the service quantity is small in the reciprocation type stoker the electric motor and there duction gear use the standard letter other majorities are the weldments the vulnerablepart are

2、 few uses under the coal mine extreme condition its serviceability deeply measure unit to be used sigh praise. 2 the performance is stable the reciprocation type stoker to the coal trademark the size composition request and so on moisture content physical property is lax when comes to expect the non

3、-uniformity the moisture content does not stabilize also clamps has the big lump coal rubber belt the wood and the steel wire isochronisms still could the normal work. 3 the noise is low the reciprocation type stoker right and wrong vibration has the source for material equipment. its noise only to

4、have the electric motor and the reduction gear but these two noises very are allow .especially in the mine shaft or bunker and so on the enclosed place the noise is unable to proliferate this point is electrically operated is unable for the material machine to achieve.4 installs conveniently is high

5、ly small the reciprocation type stoker generally installs in bunker the warehouse mouth does not need other configuration warehouse mouth strobe distill trough and the support of motor the installment may reach ones goal instantly the adjustment work load is small but electrically operated stoker be

6、cause cannot directly withstand the warehouse pressure needs moreover to place the warehouse mouth transition chute under compares the reciprocation type stoker holds highly slightly has saved the floor space and the investment.developments large-scale reciprocation type stoker necessityis precisely

7、 because the reciprocation type stoker has the above characteristic we believed in the coal mine shaft and the ground production system pharynx and larynx link and in other need control noises links should the first choice reciprocation type stoker. the expanded series reciprocation type stoker shou

8、ld satisfy the following request. 1 satisfies the large-scale mine pit productivity the requestalong with the our country coal mine pit unceasing expansion the hour productivity also is increasing for example: the well is 2.4million t/a3 million t/a. 4 xi ten thousand t/a mine pit hour productivity

9、separately for 42 h 928t/h 1238t/h. the mine pit hour productivity increase the request enhances the stoker the productivity. at present the mine pit mine shaft raw coal transportation more and more many uses the adhesive tape conveyer in other words the mine shaft used the stoker the link to increa

10、se. although may use many small models stoker jointly to arrange satisfies the big productivity the request but arranges many stokers to need to expand weighed the room the increase project investment moreover many arrangement the system reliability reduces the noise increases has the problem the pr

11、obability also relatively to increase. brings the certain trouble to the service. loads car the system in the use adhesive tape conveyer is in the ground production system uses stoker most places moreover the request gives the coal ability quite to be big. loads a car the system if uses electric vib

12、rator for the material machine not only increased has loaded a car moreover the noise very to be highly big. installs the large-scale reciprocation type stoker not only causes the hour productivity to increase moreover also for loaded a car the system equipment shaping to provide has been bigger may

13、 choose the scope. 2 loads the belt type necessary with the host well bottom of the wellbeat the conveyer the main well bottom of the well loads the belt type beat the quota conveyer type bottom of the well charging gear development tendency lists as the coal key scientific research item when the qu

14、ota conveyer idling speed loading is requested for the coal equipment ability 801 above ttb the existing k series stoker cannot meet this requirements. although also may use for the material strobe material but for the material strobe for estimated easily the raw coal moisture the granularity influe

15、nce causes for the material non-uniformity. but the large-scale reciprocation type stoker may satisfy this requestlarge-scale reciprocation types deceive the coal machine structural style characteristicwe through carry on the analysis to the former stoker investigation has carried on the thorough co

16、mputation to the structure pattern to the essential stress spot like tank the double connecting rod the base held the roller and so on to carry on the stress analysis carried on the examination computation using the finite element principle. altogether has following five characteristics.1 entire mac

17、hine uses the frame themselves to be possible to unload the type because considered the mine shaft transportation the convenience and the mine shaft industry and mining limit entire machine uses a minute writing style moreover considered the mineshaft welding inconvenient uses the bolt vice-joint th

18、e side bar to consider the external drum the possibility and the end ophragm wear the need lays down in the flank reinforced inside lining strengthened the whole rigidity and the intensity.2 increases dao ban the guidance and the blocking in makes the reciprocal motion under dao ban to additionally

19、build several groups of requests rollers wheel on the one hand changes dao ban the sliding friction for to roll the friction reduced the attrition on the other hand also causes dao ban the rigidity enhancement. moreover for prevented dao ban is transporting moves in the process to have runs the lean

20、ing phenomenon in dao ban two sides installments guidance wheel.3 uses the hyperbolic trough drive type the stoker drive uses the hard tooth face reduction gear or dinary plug shaft coupling but non-fluid strength coupler double output shaft form like this not only reduced the cost moreover to cause

21、 the unilateral axis radial direction load only is the bottom surface thrust force one half is carried the condition big improvement moreover further enhanced the stability which dao ban moved.4 carries on the optimization to the dao ban structure formerly kseries stoker plate strobe the material ha

22、d many problems in shipping for estimated could not enhance the key also lay in this. therefore we have carried on the optimization to dao ban designs for the steps and ladders not only caused the material process load to enlarge more over the dao ban itself intensity also obtained further enhances.

23、 5 changes the fan strobe for the manual plate strobe control sexpects how many the key to be decided by the strobe the strobe always suses the fan structure in the former k series but discovered from the field use the fan strobe and the warehouse wall frequently bump the scene often when installs t

24、he strobe can not but knock the warehouse walla part causes the warehouse wall the intensity to weaken based on we uses the manual plate strobe matches the guidance wheel under the damper plate simultaneously has the positioning device on the axis.economic efficiency analysis in needs 2000t/under th

25、e h transport capacity condition arranges two university of taiwan stoker with simultaneously to arrange four k 14 stokers or four electric vibrator stoker sits economic efficiency quite is as follows.1 weighed proclaims the mining quantity the big weighed room not only causes the mining quantity to

26、 increase moreover can bring many negative effects along with it four reciprocation types stoker union arrangement should consider between the equipment must remain has the overhaul space holds zuo the space like this its weighed room resilience is bigger than two university of taiwan reciprocation

27、type stoker but if uses four vibrations to deceive the material mach ineneeds the height difference in a big way moreover because its noise is big the small weighed room cannot satisfy its request. speaking of this parameter arranges two university of taiwan stoker the plan is most economical.2 powe

28、r consumption comparison the large-scale reciprocation type stoker power is not certainly big two university of taiwan stoker power consumption and four k 14 stokers or electric vibrator the stoker is nearly impartial. 3 equipment operating cost comparison large-scale stoker vulnerable very few more

29、over because uses the standard hard tooth face reduction gear causes the service quantity minimum but four stokers because number increasing the maintenance cost also is corresponding is large-scale stoker two times electric vibrator the stoker is unable in this point with it to compare. develops th

30、e large-scale reciprocation type stoker met our country coal need to develop expanded in the coal mine production system design to give the coal equipment the shaping scope. in particular in jining two mine pits success uses for me the country provided has been new large-scale for the coal equipment

31、 should give the vigorously promoted use. 中文譯文往復(fù)給煤機(jī)現(xiàn)狀一、往復(fù)式給煤機(jī)其自身結(jié)構(gòu)的優(yōu)越性1 結(jié)構(gòu)簡單，維修量小 在往復(fù)式給煤機(jī)中，電動機(jī)和減速器均采用標(biāo)準(zhǔn)件，其余大部分是焊接件，不易損壞，在煤礦井下這種惡劣的條件下，它的適應(yīng)能力較好，具有通用性，受到廣泛喜愛。2 性能穩(wěn)定往復(fù)式給煤機(jī)對煤的要求主要取決于煤的密度、粒度大小，對煤的其它因素如水分、物理性質(zhì)等要求不嚴(yán)，因此，當(dāng)給煤機(jī)的給料不均勻，水分不穩(wěn)定、煤中含有其它物質(zhì)如木頭、鋼絲等時，仍能正常工作。3 噪音低 往復(fù)式給煤機(jī)是非振動式給料設(shè)備，這種給煤機(jī)中只有電動機(jī)和減速器是發(fā)生振動的，但這兩

32、種振動都很低，所以噪聲也低。尤其在井下或煤倉這種封閉的場所，噪音無法擴(kuò)散，而電動給料機(jī)就沒法達(dá)到這一要求。4 安裝方便、空間少 往復(fù)式給煤機(jī)不需要另外配倉口閘門導(dǎo)料槽及電動機(jī)支座，方便安裝，容易調(diào)整，而電動的給煤機(jī)不耐磨不能承受壓力，需要另外設(shè)置導(dǎo)料槽倉口，相比之下，往復(fù)式給煤機(jī)占的空間較小，節(jié)省了擺放空間和資金成本。二、研制大型往復(fù)式給煤機(jī)的必要性根據(jù)以上的特點(diǎn)，我們綜合考慮到在煤礦井下這一惡劣條件下，以及在要求控制噪聲的條件下，我們應(yīng)首先選擇往復(fù)式給煤機(jī)。大型的往復(fù)式給煤機(jī)這一系列的給煤機(jī)應(yīng)滿足下列要求。1 滿足大型礦井生產(chǎn)能力的要求 我國的礦井在不斷的擴(kuò)大中，所以對生產(chǎn)能力的要求也在增加

33、，例如：在400萬t/a的礦井中，每小時生產(chǎn)能力分別為了42t/h，928t/h，1238t/h。要增加礦井每小時生產(chǎn)能力，必須首先提高往復(fù)式給煤機(jī)的生產(chǎn)能力。目前，現(xiàn)在最常用的是甲帶式給料機(jī)，這表明，井下使用的給煤機(jī)的種類增加了。雖然可以采用許多小的給煤機(jī)一起使用來完成大的工作能力的要求，但 多臺給料機(jī)放在一起需要擴(kuò)大空間，同時也增加工程投資的成本，最主要的是這樣的布置，會導(dǎo)致系統(tǒng)的可靠性降低，噪聲也隨之增大，機(jī)器也很容易出問題，且維修也比較麻煩。在地面上的生產(chǎn)系統(tǒng)，通常使用給煤機(jī)最多的是膠帶式給煤機(jī)，它的給煤量比較大。但如果采用電振給料機(jī)，空間高度會有所增加而且噪聲也會變大。采用大型往復(fù)式給煤機(jī)，不僅可以使每小時生產(chǎn)能力增大，而且他所選的部件的范圍也會相應(yīng)的增多。2 與主井井底裝載帶式板式輸送機(jī)配套 與主井井底裝載帶式板式輸送機(jī)配套已經(jīng)被列為煤炭重點(diǎn)科研項目，定量輸送機(jī)慢速裝載時要求給煤設(shè)備的能力達(dá)到801t/h以上，但現(xiàn)在所有的k系列給煤機(jī)還滿足不了這個要求。雖然可以采用給料閘門來運(yùn)輸，但給料閘門的給料量易受物料的水份、粒度大小等因素影響，這會造成給料不均勻。而大型往復(fù)式給煤機(jī)就不同，它能達(dá)到這要求。待添加的隱藏文字內(nèi)容2三、 大型往復(fù)式給煤機(jī)的主要結(jié)構(gòu)特點(diǎn)通