Lubricating structure for slewing bearing for construction machinery

Abstract

The invention relates to a lubricating structure for a slewing bearing of construction machinery. The lubricating structure comprises a seat ring, an upper shaft ring, a lower shaft ring and cylindrical rolling bodies, wherein two upper rolling paths, two lower rolling paths and a side rolling path are arranged on the seat ring and are respectively and internally provided with cylindrical rolling bodies. The innovative point is that the lubricating structure further comprises a lower main runner, a lower branch runner, an upper main runner and an upper branch runner, wherein the upper and the lower main runners are respectively used for supplying oil to the upper and the lower rolling path through the upper and the lower branch runner; guiding angles are respectively arranged at the junctions of the upper and the lower branch runner and the upper and the lower main runner. The lubricating structure has the advantages that the upper main runner and the upper branch runner work together to supply oil for the upper rolling path, and the lower main runner and the lower branch runner work together to supply oil for the lower rolling paths and the side rolling path, and meanwhile, the branch runners at the rear side adopt a large-guiding angle structure, so that oil supply amounts of the branch runners on the front sides and the rear sides of the main runners are nearly the same, and accordingly, the oil supply of the lubricating structure is relatively uniform so as to ensure normal operation of the bearing.

Description

technical field [0001] The invention relates to a bearing, in particular to a lubricating structure for a slewing bearing used in engineering machinery. Background technique [0002] Construction machinery is an important part of China's equipment industry. In a nutshell, all the mechanical equipment necessary for comprehensive mechanized construction projects required for earthwork construction projects, road surface construction and maintenance, mobile lifting and loading and unloading operations, and various construction projects are called construction machinery. It is mainly used in national defense construction projects, transportation construction, energy industry construction and production, mining and other raw material industry construction and production, agriculture, forestry and water conservancy construction, industrial and civil construction, urban construction, environmental protection and other fields. [0003] Slewing bearing is a new type of mechanical co...

AI Technical Summary

Problems solved by technology

With the rapid development of construction machinery, its performance requirements for bearings are getting higher and higher, and various multi-raceway large-load bearings are born. For different bearing structures, their lubrication structures are also different. The search did not find the same large bearing capacity slewing bearing lubricating structure as the present invention

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