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China overcomes the problem of bearing "running circle"

China overcomes the problem of bearing "running circle"

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2019/04/10 11:42
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[Abstract]:
Thereisagoodsolutiontothebearing"runningcircle"problemthatplaguestheChinesemachineryindustry.Recently,thetechnologydevelopedbyLiuYi,aprocessengineerofGuangdongYuzhuGroupShaoguanCasting&ForgingMachineryCo.,Ltd.,hasovercomemanypatentsandhasbeenwidelyusedinjawcrushers.Sandgravelindustry.Promotion.  Theso-called"runningring"ofthebearingisthattheouterringofthebearingandthebearinghousingortheinnerringandtheshafthavearelativemovement.Theplanetarygearofthewindpowertransmissionhasarunningring,whichwillcauseirreparabledamagetothegearbox.Atpresent,thereisnomaturetechnologythatfindsthebearing"runningcircle"faultinadvanceandsolvesitintime.Mostofthebearing"runningcircle"faultsareconfirmedafterthetransmissionisdamaged.  Theinventorofthetechnology,LiuYi,conductedalong-termstudyontheproblemthattheminingmachinery,especiallythejawcrushingmotorizedbearing,rantheouterringandseriouslyaffectedtheservicelife,andfinallysolvedthisproblemandappliedformultiplepatents.AccordingtoLiuYi,afterthebearingisassembled,theballrotatesandtheinnerringandtheshaftdonotmove(theouterringandtheholedonotmove).Thepriorarteccentricshaftandtheinnerringofthebearingadoptaninterferencefit.Whenassembling,theleftandrightinnerbearingringsofthetwosidesareheatedandtheninsertedintotheeccentricshaft.Afterthenormaltemperature,theleftsideofthedrivencymbalisdriventotherightsideforassembly.Theholeandtheouterringareinterferencefit,sotheycan'tbeloaded;iftheyareinstalled,theyaregapfit,andsoonerorlatertheywillruntheouterring,whichwillseriouslyaffectthelifeofthebreak.Thepatentedtechnologyachievestheeffectthatthemovingbearingdoesnotruntheouterring.  Atpresent,thistechnologyhasbeenpromotedinChinaSandandStoneAssociation,andhasbeenusedformanyyearsinmanyminesinFujian,Guangdong,Guangxi,Guizhou,Sichuan,Jiangxiandotherprovinces.IthasbeenwellreceivedbyusersandistheonlyoneinChina.MeettheproductsofthePeople'sRepublicofChinamachineryindustrystandardJB/T1388-2015. "Overcomingthedynamicbearingdoesnotrunoutside(inner)ringissimilartothemethodofovercomingthebearingrunningouterringofthewindturbine,andincontrast,theworkingenvironmentofthemovingbearingismoresevere,andthebearingissubjectedtoagreatertorsionalforce.Therefore,thetechnologyItismoreconvenientandpracticaltoovercomethebearingouterringproblemofwindturbines."LiuYisaidthatthenextstepwillbetoexpandthetechnologyfromtheE-bearingtothegeneratorbearingfieldtobetterservetheequipmentmanufacturingenterprisesandextendthegearbox.Servicelifeandincreaseefficiency.
There is a good solution to the bearing "running circle" problem that plagues the Chinese machinery industry. Recently, the technology developed by Liu Yi, a process engineer of Guangdong Yuzhu Group Shaoguan Casting & Forging Machinery Co., Ltd., has overcome many patents and has been widely used in jaw crushers. Sand gravel industry. Promotion.
 
 
The so-called "running ring" of the bearing is that the outer ring of the bearing and the bearing housing or the inner ring and the shaft have a relative movement. The planetary gear of the wind power transmission has a running ring, which will cause irreparable damage to the gearbox. At present, there is no mature technology that finds the bearing "running circle" fault in advance and solves it in time. Most of the bearing "running circle" faults are confirmed after the transmission is damaged.
 
 
The inventor of the technology, Liu Yi, conducted a long-term study on the problem that the mining machinery, especially the jaw crushing motorized bearing, ran the outer ring and seriously affected the service life, and finally solved this problem and applied for multiple patents. According to Liu Yi, after the bearing is assembled, the ball rotates and the inner ring and the shaft do not move (the outer ring and the hole do not move). The prior art eccentric shaft and the inner ring of the bearing adopt an interference fit. When assembling, the left and right inner bearing rings of the two sides are heated and then inserted into the eccentric shaft. After the normal temperature, the left side of the driven cymbal is driven to the right side for assembly. The hole and the outer ring are interference fit, so they can't be loaded; if they are installed, they are gap fit, and sooner or later they will run the outer ring, which will seriously affect the life of the break. The patented technology achieves the effect that the moving bearing does not run the outer ring.
 
 
At present, this technology has been promoted in China Sand and Stone Association, and has been used for many years in many mines in Fujian, Guangdong, Guangxi, Guizhou, Sichuan, Jiangxi and other provinces. It has been well received by users and is the only one in China. Meet the products of the People's Republic of China machinery industry standard JB/T1388-2015.
 
"Overcoming the dynamic bearing does not run outside (inner) ring is similar to the method of overcoming the bearing running outer ring of the wind turbine, and in contrast, the working environment of the moving bearing is more severe, and the bearing is subjected to a greater torsional force. Therefore, the technology It is more convenient and practical to overcome the bearing outer ring problem of wind turbines." Liu Yi said that the next step will be to expand the technology from the E-bearing to the generator bearing field to better serve the equipment manufacturing enterprises and extend the gearbox. Service life and increase efficiency.
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