Oil seal assembly and second-order seam allowance sealing structure for supporting wheel bearing of paddy field tractor

Abstract

The invention discloses an oil seal assembly for a roller bearing of a paddy field tractor and a second-order seam sealing structure. The inner fixed sleeve of the first oil seal is provided with a first ring body and a second ring body in sequence, and the outer surface of the second oil seal The fixing sleeve is set outside the second ring body, the first sealing protrusion of the second oil seal extends between the first ring body and the second ring body, and the second sealing protrusion extends between the ring body and the inner fixing sleeve, Thus, two oil seal chambers are formed between the inner fixed sleeve of the first oil seal and the outer fixed sleeve of the second seal; the oil seal assembly for the track roller bearing of the paddy field tractor of the present invention is fixed in the inner fixed sleeve of the first oil seal. The first ring body and the second ring body are arranged outside the sleeve, so that the two sealing protrusions of the second seal form a double sealing structure with it, which greatly improves the sealing effect, thereby effectively reducing the wear of the oil seal and prolonging the service life. The invention also proposes a second-order seam sealing structure for the roller bearing of the paddy field tractor, which effectively prevents muddy water from entering the bearing.

Description

technical field [0001] The invention relates to the technical field of tractors, in particular to an oil seal assembly for a roller bearing of a paddy field tractor and a second-order sealing structure thereof. Background technique [0002] Track rollers are the key components of the tracked paddy field tractor's walking system. The sealing of the track rollers directly affects the service life of the track rollers. Paddy field tractors often work in harsh working environments such as muddy water, and muddy water can easily penetrate the wheel train through the gaps. In the sealing structure of the bearing, it will cause wear to the shaft and bearing, cause the sealing performance to fail, reduce the service life of the roller, and affect the normal operation of the wheel train. The sealing of the rollers has a great influence on the normal operation of the wheel train, and strengthening the sealing effect of the rollers can also improve the service life of the bearings and ...

AI Technical Summary

Problems solved by technology

[0002] Track rollers are the key components of the tracked paddy field tractor's walking system. The sealing of the track rollers directly affects the service life of the track rollers. Paddy field tractors often work in harsh working environments such as muddy water, and muddy water can easily penetrate the wheel train through the gaps. In the sealing structure, it will cause wear to the shaft and bearing, cause the sealing performance to fail, reduce the service life of the roller, and affect the normal operation of the wheel train

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