High-temperature heat radiation and gas guide bearing

Abstract

The invention relates to a high-temperature heat radiation and gas guide bearing. The high-temperature heat radiation and gas guide bearing comprises an outer ring, an inner ring, a steel ball and a holder. A bearing cover is arranged between the inner ring and the outer ring and comprises an annular plate, and an outer lip side and an inner lip side are arranged on the annular plate. Sinking grooves are formed in the outer corner of the combination portion of the outer lip side and the annular plate. The upper portion of each sinking groove is connected with the outer surface of the annular plate to form an upper groove opening, the lower portion of each sinking groove is connected with the peripheral wall of the outer lip side to form a lower groove opening, and a distance exists between the bottom edge of each lower groove opening and the bottom face of the outer lip side. The groove walls of the sinking grooves can arch outwards under the internal pressure of the bearing, the internal space of the bearing is released, the volume of the internal closed space of the bearing is enlarged, and therefore the rising speed of the internal gas pressure of the bearing is reduced, the rising height of the internal gas pressure of the bearing is reduced, and lubricating grease is prevented from leaking out under high pressure accordingly.

Description

technical field [0001] The invention relates to a bearing, in particular to a high-temperature heat dissipation air guide bearing. Background technique [0002] Bearings are precision supporting parts and basic parts. Most of the bearing materials are made of steel. If they are assembled in related mechanical hosts and work in a water environment, it is easy to cause rust and corrosion inside the bearing, resulting in reduced accuracy and stability. Shortened lifespan. In order to make the bearing work normally in the water environment, some bearings are equipped with various waterproof protection devices on the outside to prolong the service life of the bearing. The typical structure is to set a bearing cover between the inner and outer rings of the bearing, for example The structure shown in the public technology named "dustproof and waterproof bearing" (CN105299057A); but in actual application, the high-speed operation of the bearing will generate high temperature inside...

AI Technical Summary

Problems solved by technology

[0002] Bearings are precision supporting parts and basic parts. Most of the bearing materials are made of steel. If they are assembled in related mechanical hosts and work in a water environment, it is easy to cause rust and corrosion inside the bearing, resulting in reduced accuracy and stability. shortened lifespan

In order to make the bearing work normally in the water environment, some bearings are equipped with various waterproof protection devices on the outside to prolong the service life of the bearing. The typical structure is to set a bearing cover between the inner and outer rings of the bearing, for example The structure shown in the public technology named "dustproof and waterproof bearing" (CN105299057A); but in actual application, the high-speed operation of the bearing will generate high temperature inside, and the space surrounded by the bearing cap, bearing inner ring and bearing outer ring The air pressure rises, and under the action of high air pressure, the grease is easy to seep out from between the inner lip of the bearing cover and the inner ring, resulting in poor lubrication of the bearing and shortening the service life

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