1、皮帶跑偏緣由及處理方法一、導(dǎo)致皮帶跑偏的主要因素1膠帶的構(gòu)造、類型和工作條件機架地基消滅不均勻沉降、風(fēng)霜雨雪的影響2345二、各種跑偏緣由及對策措施1One or more idlers immediately preceding trouble point not at right angles to the direction of belt travel. 一個或多個拖輥在前述故障點上延膠帶運動方向角度不正Advance, in the direction of belt travel, the end of the idler to which the belt has shifted

2、. Square idlers.首先延著膠帶運動方向，對膠帶跑偏的哪一側(cè)托輥進展方形校正Conveyor frame or structure crooked. 皮帶機架彎曲Stretch string along edge to determine extent and make correction.進展校正。One or more idler stands not centered under belt.一個或多個拖輥不正Center them.Same as above.校正拖輥Sticking idlers. 拖輥粘滯Clean and lubricate.清理和潤滑拖輥Belt r

3、uns off terminal pulley.Checkterminalpulleyassignment.Check alignments ofidlers approaching terminal pulley.Build up of material on idlers. 物料粘結(jié)在拖輥外表Clean them.Install cleaning device.清洗掉物料清理設(shè)備Structure not level and belt tends to shift to low side. 機架不平導(dǎo)致皮帶向較低一側(cè)偏移Level structure.調(diào)平機架2Beltnot joined

4、 squarely. 皮帶接頭不正Squareends/resplice.調(diào)正接頭Bowed belt. 皮帶彎卷Tension it or replace.張緊皮帶或更換3Loadbeing placed on belt off-center. 落料點偏離皮帶中心Adjust chute and loading conditions so as to place load inthe center of belt.調(diào)整溜槽或落料點使物料落在皮帶中心Conveyorframe or structure crooked. 皮帶機架彎曲Straighten it.調(diào)直機架4Belt too sti

5、ff to train. 皮帶太硬無法調(diào)整Use self-aligning idlers. Increase tension/conforms to crowns.Usemoreflexiblebeltonreplacement.承受自調(diào)偏拖輥增大牽引力 用柔韌性好的皮帶替換Tilttroughing idlers forward, but not over 2 degrees.Use more troughable belt. 槽形拖輥向前翹起，但不超過2度的槽形拖輥Combinationof causes listed under Paragraphs 2 and3.Correctloa

6、ding first.Other causes can then be identified andcorrected. 首先調(diào)整落料點，然后再考慮其它方法三、整機糾偏挨次The basic, and primary rule of tracking a conveyor belt is simply “THE BELT MOVES TOWARD THAT END OF THE ROLL IT CONTACTS FIRST.“ 是“膠帶朝與托輥最先接觸的一端運動”The NORMAL SEQUENCE of training is to start with the return run, w

7、orking toward the tailpulley; following with top run inthe direction ofbelt travel.Start with the beltempty. After tracking is completed, run the belt with a full load and re-check tracking. 查載檢查，之后再帶載檢查。TRACKING ADJUSTMENT is done while the belt is running and should be spread oversomelengthoftheco

8、nveyor precedingtheregionof trouble.Permit the belt to run forseveral minutes and at least three full belt revolutions after idler has been adjusted todetermineifadditionaladjustmentisrequired.Ifthebelthasover-corrected,itshouldberestoredbymovingbackthesameidler,andnotbeshiftingadditionalidlersorrol

9、lers. 在 Conveyor troughing idlers are offered in a widevariety of styles. Troughing angles include 20, 35,&45.Thestandsareprimarilytwo(2)typesand vary with each manufacturer.皮帶槽形托輥有多種類型。槽角有20、35和45。常用的主要有兩種，隨制造商不同而變化#1#290)Thisstandhasnotilt,andis designed for the conveyor belts to run in both direc

10、tions. It has no real assist in belt tracking前傾，適用于雙向運行皮帶。在皮帶調(diào)整方面沒有多大作用.“Tilted“ (2) In the direction of belt travel.toruninthisdirectiononly.The2 tilt offers good results in conveyor belt tracking.2Straightstandscanbetilted2forwardbyplacinga1/8“thickwasherunderthebacksideofidlerstandindicated by ar

11、rows. Remember, this conveyor only runs in one direction.如圖中箭頭所示：通過在托輥后1/8“2。留意，這種皮帶只能向一個方向運行conveyors,thebeltrunsgreatin one direction, only to run off when reversed.youusing?Ifyouareusingtiltedstands,theyaregoodforonedirectiononly.大多數(shù)狀況下，配置這種托輥的皮帶在單一方向上運行的很好，只是在皮帶反轉(zhuǎn)時才消滅問題。有什么問題嗎？你們用的是什么托輥？假設(shè)你們正在使用

12、傾斜托輥架，它們只會在一個方向運行。On reversing conveyors where tilted stands arealready in service and giving problems, you can neutralize the tilt by placing a 1/8“ thick washer underthefrontsideoftheidlerstandoppositethesideindicatedbyarrows.Nowwiththetiltedstandsneutralized, you can run your conveyor belt either

13、 direction.在雙向運轉(zhuǎn)皮帶上假設(shè)安裝了這種傾斜托輥并 且消滅問題，如下圖，可在托輥架傾斜的反方向上安置 1/8“厚的墊圈來調(diào)整。現(xiàn)在隨著托輥架傾角的轉(zhuǎn)變， 皮帶可以進展雙向運行了。The only part of the troughing idler that hs any training effect on the conveyor belt is the centerarrow.Re-readthisstatement.#3#4#5的唯一局部就是中心托輥。認(rèn)真閱讀這一局部內(nèi)容Therollersindicatedbythearrowsformthetroughinthecon

14、veyorbelteither20,35,or45.Theyoffer load support, but do not have any training effect on the conveyor belt.、3545。它們起支撐作用，但對皮帶運行無實質(zhì)影響。Thisexampleaccountsforthelargestsinglecauseofconveyorbelttrackingproblems.Youwillnotethatthe conveyor belt does not contact the center roll ofthe troughing idler which

15、 is the only part of the trouging idler that has any training effect on the conveyorbelt.Youcanturnthistroughingidleruntil youareblueinthefaceandyouwillsee noresults.有任何結(jié)果，即使調(diào)到你臉色發(fā)藍(lán)也是如此。How many times have you heard this saying? “My conveyorrunsgreatemptybutwhenIputaloadonit,crazy.“Well,let”slookato

16、urexampleindicated by the arrow. There is no cneter roll contactuntilyouputaloadontheconveyorbelt.Atthistimetheweightoftheloadmakestheconveyorbelt contact the center rolls which are turned in alldirections.Nowthetrainingeffecttakesplaceandtheconveyorbeltdoeswhatitistoldtodobythecenter roll of the tr

17、oughing idler.一旦帶載后，就會消滅很多問題”。是的，如圖中箭頭所示，讓我們看看例子。在皮帶未帶載之前，中心的托輥沒有與皮帶接觸。一旦帶載后物料的重量使皮帶與中心托輥接觸，在此之前，中心托輥可以任意旋轉(zhuǎn)。現(xiàn)在實質(zhì)性的影響發(fā)生了，皮帶會延著中心托輥設(shè)定的路線運行。 thecorrectconveyorbeltcontactwith the center roll of the troughing idler. the notjustbarelytouchthecenterrolls but should touch hard enough to flatten the conveyo

18、r belt over the whole rolls face.#6#7展，幾乎與中心托輥緊緊貼在一起。It may be necessary to shim roller frames several inches to contact center rolls. Concave curves in conveyorshavethetendencytolifttheconveyorbeltsandthetroughingidlers,resultingin Big Problems.或許將中心托輥墊高幾英寸來使皮帶與中心接觸是必需機架形成的軌跡，結(jié)果造成大問題。Whichwaydowetu

19、rnoradjustidlerstomoveconveyorbelts to a corrective position? The easiest way to rememberistothinkofthetroughingidlerorflatrollsasbeingthehandlebardonabicycle.Lookattheconveyorbeltinthedirectionofbelttravelandsteertheidlersinthesamewayasbicyclehandlebars until you move the conveyor belt to the desir

20、ed position.Thetrainingefortiscausedbythefrictionforce of the scruffing action of the conveyor belt asit passes over the cocked idler.調(diào)整托輥或皮帶應(yīng)承受哪種方法呢？最簡潔的方法就是整，這時可無視托輥的存在。Thisexampleshowsatroughingidlerwiththeconveyor beltrunningtothefarright.Thecorrectadjustment would be driving the side of the tro

21、ughing idler forwardasindicated bythearrow.Smalladjustments shouldbemadeandtheconveyorbeltshouldmaketwo(2) revolutions before more adjustments are made.#8將托輥架向圖中箭頭所指方向移動。調(diào)整時幅度要小，此時在更多調(diào)整之前皮帶可能會產(chǎn)生兩種結(jié)果。atroughingidlerwiththeconveyortheleft.Thecorrectadjustmentwouldsideofthetroughingidlerforwardasindica

22、ted by the arrow.將托輥架向圖中箭頭所指方向移動。enlarge#9#10#11This example shows two (2) flat return rolls with conveyor belt running far right (top roll) and conveyor belt running far left (bottom roll). The correctadjustmentswouldbedrivingtheendoftheflat return roll forward as indicated.機頭機尾This example shows a

23、 tail pulley with the conveyor beltrunningtothefarleft.Thecorrectadjustmentwouldbetomovethesideindicatedbythearrow.For training purposes, the tail pulley belongs to the return side or bottom side of the conveyor.目的，將機尾滾筒看作皮帶的回程局部或皮帶下部。Note:Thetailpulleyshouldneverbeusedinaneffort to train the convey

24、or belt. the tail pulley should be leftsquare.Thelastreturnrollcomingtothetailpulleyandthefirsttroughingidleronthetopsideoftheconveyordeterminehowtheconveyorbeltrunsor centers on the tail pulley.筒是用來保持機架成方形的。靠近機尾滾筒的第一個回程托輥和靠近機頭滾筒的第一個上托輥打算皮帶的運行及機尾滾筒的中心。This example shows a tail pulley with the convey

25、orthefarright.Thecorrectadjustmentwould be to move the side indicated by the arrow.#12#13方法是按圖中箭頭所示進展調(diào)整。This example shows head pulley with conveyor belt Thecorrectadjustmentwouldbetomovethesideindicatedbythearrow.For trainingpurposes,thteheadpulleybelongstothetopsideorcarrying side of the conveyor.

26、方法是按圖中箭頭所示進展調(diào)整。機頭滾筒屬于皮帶頂部或帶載側(cè)。This example shows a head pulley with the conveyor beltrunningtothefarleft.Thecorrectadjustmentwould be to move the side indicated by the arrow.方法是按圖中箭頭所示進展調(diào)整。#14#15Thecenteringoftheconveyorbeltasitpassesoverthetailpulleyandthecenteringoftheloadontheconveyor belt as it

27、passes under the loading point, are the two most important factors in assuring a straight running conveyor belt.尾滾筒時的中心以及當(dāng)皮帶帶載時帶載點的中心位置。This example shows conveyor belt running centered on theconveyortroughingidlers,buttheloadingchute isoffcentertotherightoftheconveyorbelt.Theresultistheconveyorbelt

28、willstartmovingtotheleft.#16#17#18心時情形。這種情形的結(jié)果是皮帶將向左跑偏。conveyorbeltfinallytrackingoff to the left side of the conveyor, spilling material the entire length of the conveyor.灑落。The correction would be to relocate the chute to thecenter of the conveyor belt or baffle and divert theflow to the center.的中

29、心。This example shows the approximate amount of sag on return rollers required for good tracking. Sag is regulated by the amount of weight placed on a counterweighttakeuportheamountofforceappliedto a screw take up. The take up serves four needs:Takeupmaintainsslacksidetensiononconveyorbelt to prevent

30、 slipping on drive pulley.Compensatesforvariationsinthebeltlengthresulting from belt stretch or shrinkage.sagbetweentroughingandreturnrollers.Takeupprovideslivestorageforextrabeltingwhich can be used for resplicing.本例顯示了保持皮帶良好運行狀態(tài)在回程皮帶上所需要到四種作用：1、保持皮帶在機頭滾筒上張緊力；2、補償皮帶由于伸長或收縮產(chǎn)生的變化；3、削減上下托輥之間產(chǎn)生的額外懸垂度；4

31、、供給皮帶在安裝時所需要的額外有效儲存。#19#20Concave conveyors will head your list of problem conveyors.Thisisduetothefactthattheconveyorbelt will lift off the troughing idlers and return rolls as indicated by the dotted lines. There will be long distances of no roller contact ad lack of training.較長的距離內(nèi)沒有托輥。The best s

32、tart on solving this problem will be reducing the counter weight (if possible). You mayalso alternate return rolls over and under the returnsidetoassuregoodrollercontact and tracking. (see next example)假設(shè)可能的話。也可以將回程皮帶側(cè)的前后托輥進展替換以確保皮帶與托輥保持良好的接觸。見下例Exampleshowsreturn rollsalternatedoverandunderconveyor

33、belttoassuregoodbeltcontact.Techniquecan be use concave curves where conveyor belt will lift off return rollers on return side (see next example). This technique may also be used on bowed conveyorbeltswhichonlycontactreturnrollsonthevery edges of the conveyor belt. This type of contactmakestheconvey

34、orbeltimpossibletotrain,butbyneutralizing the bow. the conveyor belt can be trained.本例顯示將回程皮帶上下托輥替換以保持皮帶與托輥的參看下例。這種技術(shù)在弓形皮帶上也有應(yīng)種類型的接觸使皮帶有可能通過下壓弓形局部來進展調(diào) 節(jié)。Thisexampleshowsaconveyorbeltthatisundertheinfluence of excessive counter weight. Excessive weightwillcausetheedgesoftheconveorbelttocurl up on the

35、 troughing idlers on the top side of the conveyorandcurldownonthereturnrolsonthebottom side of the conveyor.#21#22曲。Reductionofcounterweightwillrelaxthebowing,but itmaybenecessarytoimplementthetechniqueshownin prior example to return side.實行這種技術(shù)是必需的。Whenreducingcounterweighttorelaxconveyorbelts in c

36、oncave curves or just to get the proper sag on rollersfortracking,itisimperativethatthedrive pulleys on the conveyor be lagged with a 60 durometer rubber material to prevent slip of the conveyor belt on the drive pulley. Water and dust act as lubricants on the drive pulley and cause tracking problem

37、s. Chevron grooves in the lagging cover will assistwiththeirremoval.Thechevrongroovedpulley above is a one directional pulley. If it is installed with the chevrons running in the wrong direction or is used on a reversing conveyor, tracking problems will most likely occur. Water and dust will be chan

38、neled to the center of the drive pulley. On reversing conveyors, a diamond pattern of grooves mustbeusedtoshedmaterialineitherdirectionofrunning.當(dāng)在凹弧曲線段皮帶上減小配重或使皮帶在運行時保持 60的橡膠以阻擋皮帶懸垂的影響。機頭滾筒上的水、灰塵以及潤滑劑會導(dǎo)致皮帶消滅問題。滾筒包膠上的凹槽能避開皮帶的相對移動。機頭滾筒上的包膠延單向布置。假設(shè)機頭滾筒上的水或灰塵會進入機頭滾筒上的橡膠凹槽內(nèi)。在雙向皮帶上要應(yīng)用菱形花紋的驅(qū)動滾筒，這樣可使皮帶向任意方向運送物料。If you have reduced counter weight, and conveyor belt sliptakesplaceont