2022年2022年链传动维护保养 .pdf

故障症状可能的原因维修措施噪声过大链轮不对正松边垂度不合适润滑不良链箱或支承松动链条或链轮磨损严重链条选型不当，节距过大链轮齿数太少重新对正链轮适当调整链条松边垂度改善润滑条件紧固链箱或支承更换磨损的链条或链轮链条重新选型，采用小节距增加链轮齿数，如不能重新设计链条跳齿链条太松，使垂度过大链条或链轮磨损严重严重超载适当张紧更换链条或链轮选用高强度链条，消除过载原因链条脱不开链轮链轮不对正链轮磨损严重重新对正链轮更换链轮链条死节链轮不对正链条铰链中有杂物润滑不良载荷过大链条锈蚀链板或附件干涉重新对正链轮清除铰链处杂物改善润滑条件减小载荷或改用强度适合的链条改用防锈蚀链条检查链条是否干涉由于链传动应用的广泛性，阐明其常规的保养与维修方法是有实用意义的，保养与维修做的越好，链传动的故障就越少，实践表明，使用中如能遵守几条相当简单的保养与维护原则，就可以节约费用，延长使用寿命，充分发挥链传动的工作能力：、传动的各个链轮应当保持良好的共面性，链条通道应保持畅通；、链条松边垂度应保持适当。对可调中心距的水平和倾斜传动，链条垂度应保持为中心距的左右，对垂直传动或受振动载荷、反向传动及动力制动时，应使链条垂度更小些。经常检查和调整链条松边垂度是链传动保养工作中的重要项目。、经常保持良好的润滑，这是保养工作中的重要项目。不管采用哪种润滑方式，最重要的能使润滑油脂很及时很均匀地分布到链条铰链的间隙中去。如无必要，尽量不采用粘度较大的重油或润滑脂，因为它们使用一段时间后易与尘土一起堵塞通往铰链摩擦表面的通路（间隙）。应定期将滚子链进行清洗去污，并经常检查润滑效果，必要时应拆开检查销轴和套筒，如摩擦表面呈棕色或暗褐色时，一般是供油不足，润滑不良。、链条链轮应保持良好的工作状态。、经常检查链轮轮齿工作表面，如发现磨损过快，及时调整或更换链轮。滚子链传动故障维修指导滚子链传动的维护保养东华链条集团64MAINTENANCE FOR ROLLER CHAIN DRIVEDONGHUA PRODUCT CATALOGUE 2011链传动维护保养名师资料总结 - - -精品资料欢迎下载 - - - - - - - - - - - - - - - - - - 名师精心整理 - - - - - - - 第 1 页，共 4 页 - - - - - - - - - 故障症状可能的原因维修措施滚子碎裂、出现裂纹或变形链条节距过大或链轮齿数太小链轮齿沟有杂物链条在链轮齿上爬位过高链条受冲击过大选用小节距链条或增加链轮齿数清除齿沟杂物或更新链条更换链条，适当张紧减小链条冲击销轴旋转或链板孔被拉长链条过载消除过载原因， 或更换大规格的链条销轴断裂或链板沿链板孔连线方向断裂严重超载链板断裂载荷大于链条动载承受能力选用大节距链条， 或减小动态载荷链板或链轮齿严重侧磨链轮不共面或链轮端面跳动严重链轮支承刚度差链条扭曲严重提高加工与安装精度提高支承件刚度更换合适链条外链节外侧擦伤链条未张紧，发生跳动，从而与邻近物体碰撞链箱变形或内有杂物使链条适当张紧消除链箱变形，清除杂物销轴磨损或销轴与套筒胶合润滑不良链条速度过高或载荷过大提供适当的润滑系统降低速度或载荷链轮齿磨损严重润滑不良链轮材质较差，齿面硬度不足改善润滑条件提高链轮材质和齿面硬度卡簧、开口销等链条止锁元件松脱链条抖动过烈有障碍物磕碰止锁元件安装不当适当张紧或考虑增设导板托板消除障碍物改善止锁元件安装质量 消除过载原因或重新选用大规格或强度更高的链条；如发现链轮有问题的征兆，必须更换链轮东华链条集团65MAINTENANCE FOR ROLLER CHAIN DRIVEDONGHUA PRODUCT CATALOGUE 2011链传动维护保养名师资料总结 - - -精品资料欢迎下载 - - - - - - - - - - - - - - - - - - 名师精心整理 - - - - - - - 第 2 页，共 4 页 - - - - - - - - - Failure SymptomPossible CausesActionsVery noisyChain jumps off from sprocket teethThe chain can t be taken off from the sprocket.Dead link of chain1.unalignment of sprockets2.unsuitable loose side sagging3.bad lubrication4.chain box or bearing loose5.excessive wear of chain or sprocket6.wrong selection of chain type and too big pitch7.too small number of sprocket teeth1.realignment of sprockets2.make suitable adjustment of chain loose side sagging3.improve lubrication conditions4.fasten chain box or bearing5.replace worn chains or sprockets.6.reselect chain type and adopt smaller pitch7.add chain teeth number or redesign it1.chain is very loose which makes the sagging too big.2.excessive wear of chain or sprocket3.excessive overloading 1.unalignment of sprocket2.excessive wear of sprocket1.unalignment of sprocket2.with foreign bodies in chain joints3.bad lubrication4.too big load5.the corrosion of chain6.the interferences between plates or attachments1.realignment of sprockets2.remove the foreign bodies of joints3.improve lubrication conditions4.reduce the load or adopt suitable chain5.choose anticorrosion chain6.check the interferences of chain1.realignment of sprocket2.replace it1.make suitable tensioning adjustment2.replace the chain or sprocket3.select high strength chain to avoid overloadingTroubleshooting Instructions Maintenance for Roller Chain DriveIt s very practical to illustrate the conventional maintenance of roller chain drive because of its wide application in industry. Better maintenance, less failure. In practice, only following some simple maintenance principals, we can easily save costs and make its service life longer, and then making the operation more efficient.1、Each sprocket in the driving system should have good coplanarity and the chain path should always be smooth.2、The sagging of chain loose side should be suitable and for the adjustable center distance level and angle drive, the sagging should be 1%2% of the center distance. For conditions of vertical drive and under vibration load、reverse drive and dynamic brake ,the sagging should be smaller. It s very important to check and adjust the loose side sagging frequently in the chain drive maintenance.3、Good lubrication is also very important. Whichever lubrication method you choose, the most important thing is to make the lubricating grease distribute evenly in each chain joint clearance. If not necessary, avoid selecting big viscosity heavy oil or lubricating grease since it will jam the clearances gone to joints friction surface with dust after a period of time. Periodically clean the roller chain and check its lubrication condition frequently. Disassembly the pin and bush, if necessary. If the friction surface is brown or dust color, it may be caused by insufficient lubrication.4、Chains and sprockets should be always in good condition.5、Frequently check the working surface of sprocket teeth ,adjust or replace it when it s excessively 东华链条集团66MAINTENANCE FOR ROLLER CHAIN DRIVEDONGHUA PRODUCT CATALOGUE 2011链传动维护保养名师资料总结 - - -精品资料欢迎下载 - - - - - - - - - - - - - - - - - - 名师精心整理 - - - - - - - 第 3 页，共 4 页 - - - - - - - - - Failure SymptomPossible CausesActionsRoller cracked or deformedPin rotates or plate hole drawn long1.chain overloadedPlates broken1.too big chain pitch or too small number of sprocket teeth 2.Sprocket teeth have foreign bodies.3.The chain climbs onto sprocket teeth too high. 4.excessive chain impact load 1.select small pitch chain or add sprocket teeth number2.remove all the foreign bodies or replace chain3.replace the chain and make appropriate tensioning4.reduce the impact of chain1.eliminate the overloading causes or adopt large specification chain1.eliminate the overloading causes or adopt large specification or higher strength chain; if sprocket failure symptom found, replace it Pin broken or plate broken along the hole connecting line directionExcessive side-wear of plates or sprocket teeth1.sprocket not coplanar or ending beat severely2.bad bearing stiffness of sprocket3.severe twist of chain1.chain not tensioned and jump, then to hit adjacent bodies 2.chain box deformed or with foreign bodies inside1.make appropriate chain tensioning2.eliminate chain box deformation and remove foreign bodies1.increase machining and installation precision2.increase bearing parts stiffness3.replace chain1.selecting big pitch chain or reduce dynamic load1.bad lubrication2.chain speed too high or chain overloaded1.bad lubrication2.inferior material of sprocket and insufficient teeth surface hardness1.chain wobbling heavily2.knock with obstructions3.locking parts wrong installed1.make suitable tensioning or consider adding supporting board for guide plate2.remove all obstructions3.improve the installation quality of locking parts1.improve lubrication conditions2.improve sprocket material quality and its teeth surface hardness1.supply suitable lubrication system2.lower the speed or reduce the loadLocking parts such as spring clip and cotter pin etc. become loose.1.excessive overloading1.the load above chain dynamic 东华链条集团67MAINTENANCE FOR ROLLER CHAIN DRIVEDONGHUA PRODUCT CATALOGUE 2011链传动维护保养名师资料总结 - - -精品资料欢迎下载 - - - - - - - - - - - - - - - - - - 名师精心整理 - - - - - - - 第 4 页，共 4 页 - - - - - - - - -