Thrust wheel with high sealing property

Abstract

The invention provides a thrust wheel with high sealing property, which relates to engineering machinery. A thrust wheel assembly comprises a thrust wheel body, a thrust wheel shaft, a bimetallic shaft sleeve, left and right shaft bases, an O-shaped sealing ring, a fixed pin, floating sealing components and an oil plug, wherein cavities among two ends of the thrust wheel body and the left and right shaft bases serve as floating sealing cavities; a set of floating sealing components is assembled in each floating sealing cavity; and a sealing mechanism with high sealing property is formed by combining the floating sealing cavities with the floating sealing components after the structure is optimized and improved. In the thrust wheel, the angles and the depths of the floating sealing cavities are increased, so that the elasticity of the floating sealing components along the upwards direction is increased and the floating sealing effect of the floating sealing components in the floating sealing cavities is maintained. A section diameter of a floating sealing rubber ring is increased, a compression permanent deformation rate is reduced, a rebounding force is large, an extruding supporting force to a floating sealing ring is kept, two floating sealing ring bright bands are tightly jointed, the width of the floating sealing ring is increased, the sealing effect is obviously increased, the thrust wheel assembly is at excellent lubricated state, and the whole working life is prolonged. The thrust wheel with high sealing property can be widely applied to all engineering machinery manufacturing enterprises.

Description

technical field [0001] The invention relates to a supporting wheel of construction machinery, in particular to a supporting wheel assembly with high sealing performance. Background technique [0002] Track rollers are an important part of track-type construction machinery load-bearing and guiding. The track roller assembly is composed of track roller body, track roller shaft, bimetal bushing, left and right shaft seats, O-ring, fixed pin, floating seal assembly, oil plug, and the hyperbolic gear lubricating oil is injected inside. The cavity between the track roller body and the left and right shaft seats is called a floating seal chamber, and each floating seal chamber is equipped with a set of floating seal components to keep the lubricating oil between the track roller shaft and the bimetal bushing and other parts sealed. During the use of the roller, oil leakage is the most important form of failure of the roller, because the leakage of lubricating oil will lead to prem...

AI Technical Summary

Problems solved by technology

Before the structural transformation, the oil leakage and sealing effect were not good enough, and the overall service life of the rollers was short

[0005] According to the search, there is no patent application identical to the present invention in China

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