The utility model discloses a conveyor chain, which consists of an outer chain composed of a pin shaft and an outer chain plate, which is connected by a sleeve and an inner chain plate. The inner hole of the sleeve is loaded with a needle roller bearing. The outer edge of the needle roller bearing adopts the transition of the 0 gap between the inner edge of the sleeve and the outer edge of the pin shaft. . As the pin roller bearing is added between the pin shaft and the sleeve, the gap between the original sleeve and the pin shaft is eliminated, and the pitch deviation caused by the gap between the inner chain plate and the outer chain plate is eliminated, which improves the precision of the chain chain and the meshing accuracy between the chain and the sprocket. The impact of the chain and the sprocket meshing is greatly reduced, and the service life of the chain and sprocket is prolonged. As the bearings are pure rolling, the sliding friction between the pin and the sleeve becomes rolling friction, and the wear is small, thus greatly prolonging the service life of the chain.
【技术实现步骤摘要】
一种输送链条
本技术涉及一种链条,具体是一种输送链条。
技术介绍
输送链条是指用于输送物料的链条,输送链条因其工作可靠、无弹性滑动和打滑现象,已广泛应用各种机器,特别是高精度直线输送场合,如自动装配线、检测设备、灌装设备和分度机械等。现有的输送链条由外链节和内链节组成的活动铰链副构成,如图1所示,外链节由销轴1和外链板2过盈配合联结而成,内链节由包括套筒3和内链板4过盈配合联结而成,套筒3的外周还套有间隙配合的滚子5,套筒3与销轴1也为间隙配合,一般输送链在使用过程中,常见的主要失效形式是由于链条铰链副之间的过度磨损使链条伸长量超差,上述过度磨损主要有以下两个原因:一是链条的铰链在链条工作过程中随相邻链节相对转动,由于销轴和套筒之间存在间隙,导致内链板和外链板之间存在节距偏差,另链条的铰链在链条工作过程中随相邻链节相对转动,销轴和套筒接触表面间的摩擦是滑动摩擦。链条啮入、啮出链轮时,套筒上的滑动行程是一段圆弧面,而销轴上则恒为一线,链条在运行时平稳性差,噪音大,摩擦阻力大,磨损快。二是普通的链条铰链副,由于套筒与销轴之间,内外链板之间间隙小,链条铰链副之间的润滑靠外部润滑油滴入内外链板之间的间隙,然后通过润滑油的渗透能力进入套筒和销轴之间,故润滑油很难进入套筒与销轴中间,从而致使链条铰链副润滑性差,使得链条铰链副基本上是处于干摩擦状态,导致链条铰链副局部温升快,温度高,加剧套筒、销轴的磨损,而套筒、销轴的磨损会使链条铰链副的配合间隙增加,链条伸长,一旦链条的伸长量达到一定程度,就影响链条的输送精度、运动平稳性和链条的强度,导致链条运转时冲击和噪声增大,甚至 ...
【技术保护点】
1.一种输送链条,包括由销轴和外链板配合联结而成的外链节,由套筒和内链板配合联结而成的内链节,其特征在于:所述套筒的内孔装入滚针轴承,滚针轴承的轴向固定采用挡圈,套筒的内孔中充填有润滑脂,并由密封圈密封,滚针轴承的外缘分别与套筒的内缘和销轴的外缘之间采用0间隙的过渡配合。
【技术特征摘要】
1.一种输送链条,包括由销轴和外链板配合联结而成的外链节,由套筒和内链板配合联结而成的内链节,其特征在于:所述套筒的内孔装入滚针轴承,滚...
【专利技术属性】
技术研发人员:张可飞,王晓龙,章媛,周子棠,
申请(专利权)人:安徽黄山恒久链传动有限公司,
类型:新型
国别省市:安徽,34
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