论文部分内容阅读
在挖掘机中,回转支承可选用的形式很多,其中滚珠及半元滚道形式用得较广泛。但由于通常承受较大的轴向载荷,而且转速低,工作条件恶劣,灰尘易侵入支承,造成工作时处于重载研磨状态,加上滚珠在滚道上运动时的不规则滑动,因此对滚珠及滚道寿命影响较大,两者对研运动后,产生了非元的滚道石,更加速其自身的磨损,也造成了机器运转的不平稳性。我厂2米~3挖掘机所选用的这种支承型式就是这样。如何改善这种型式的回转支承,有必要对这种支承的运动特性作一分析,以便采取相应的措施,提高运转性能及使用寿命。一、滚珠回转支承结构的比较为了设计及制造方便,一般滚珠回转支承
In excavators, slewing bearings can be used in many forms, including ball and semi-circular roller form is more widely used. However, due to generally bear a larger axial load, and low speed, poor working conditions, dust easily invaded into the support, resulting in work in the heavy load grinding state, coupled with irregular movement of the ball in the raceway, so the ball and The impact of raceway life is larger, both of the research exercise, resulting in a non-yuan of roller stone, to speed up its own wear and tear, but also caused the machine running instability. My factory 2 m ~ 3 excavators used in this type of support is like this. How to improve this type of slewing bearing, it is necessary to analyze the kinematic characteristics of such bearings in order to take appropriate measures to improve operational performance and service life. First, the ball slewing bearing structure comparison In order to design and manufacture convenience, the general ball slewing ring