Bushing bearing

Abstract

The present invention relates to a sliding bearing, and particularly to a bushing bearing which forms oil grooves at an inner peripheral surface. The brushing bearing of the invention comprises one kind of oil grooves which are formed parallelly with the axial direction, thereby replacing spiral grooves which form sharp edges on intersection points and may damage the object.

Description

technical field [0001] The invention relates to a sliding bearing, in particular to a bushing bearing with an oil groove formed around the inner surface. Background technique [0002] Generally, sliding bearings are mainly used in the shaft rotating part of industrial machinery or construction machinery, and shaft and bushing bearings are part of its structure. Due to the particularity of the place of use, the aforementioned sliding bearings should have durability such as wear resistance and corrosion resistance in harsh environments such as tiny mineral mixtures and sea water. Therefore, the bush bearing is mainly made of carbon steel material that can be heat-treated to increase the hardness of the inner and outer diameters, so as to improve the wear resistance and corrosion resistance against harmful substances flowing from the shaft and the bush bearing. [0003] The hardness of the carburized hardened bearing is high, but once its friction surface flows into sand, that...

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Problems solved by technology

[0003] The hardness of the carburized hardened bearing is high, but once its friction surface flows into sand, such as silica sand and other harmful substances or metal powders that are harder than the carburized hardened bearing, it is easy to cause wear due to the harmful substances.

[0004] In particular, the oil flow groove (10) formed on the inner peripheral surface of the conventional bush bearing is as attached figure 1 and figure 2 As shown, the shape of "X" crossing into an acute angle or the combination of "X" and "○" will easily cause harmful substances to be discharged smoothly, and will also wear the inner peripheral surface of the bushing bearing or the outside of the shaft. surrounding surface

Moreover, once the harmful substance deteriorates and sticks to the corresponding part, it will damage the friction surface and reduce the durability.

In addition, the high-frequency hardened bearing structure is formed of martensitic structure with low corrosion resistance, and its corrosion resistance will be greatly reduced in the operating environment with river water or sea water

[0005] The traditional sliding bearing described in the attached figure 1 and figure 2 , The contact area between the shaft and the bush bearing (the part where the oil flow groove is not formed) is large, so the surface contact force is large, the friction coefficient increases, and there is a problem of poor sliding

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