Maintenance-free hub assembly

A maintenance-free, hub technology, applied in the direction of hubs, casters, wheels, etc., can solve the problems of regular maintenance of wheel bearings, hidden dangers of vehicle safety, etc., and achieve the effect of improving cooling effect, improving service life and smooth circulation.

CN105697541AActive Publication Date: 2016-06-22江朝汽车(金湖)有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2016-06-22

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Abstract

The invention discloses a maintenance-free hub assembly. The maintenance-free hub assembly comprises a hub which is connected to an axle housing in a rotating manner through a bearing, wherein an axle cover is connected to the hub; the maintenance-free hub assembly also comprises an oil pumping mechanism; an oil pipe is arranged on the hub, and one end of the oil pipe communicates with a bearing hole; an oil duct is arranged on the axle cover, and two ends of the oil duct separately communicates with the inner cavity of the axle housing and the other end of the oil pipe; an oil draining hole for communicating with the bearing hole of the hub and the inner cavity of the axle housing is formed in the axle housing; the oil pumping mechanism is connected to a circulating oil path formed by the oil pipe, the bearing hole of the hub, the inner cavity of the axle housing and the oil duct. According to the maintenance-free hub assembly disclosed by the invention, heat transfer oil flows in the circulating oil path through the oil pumping mechanism, and the bearing is continuously lubricated and cleaned, so that the purpose that the hub is maintenance free is realized; the temperature of the operated bearing can be decreased, and besides, the foreign matter generated by friction can be taken away to reduce the abrasion loss of the bearing, so that the service life of the bearing is prolonged.
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Description

technical field

[0001] The invention relates to the field of automobiles, in particular to a maintenance-free hub assembly. Background technique

[0002] The wheel hub is a cylindrical part of the automobile tire centered on the shaft to support the tire. It is an important part that connects the brake device, the wheel disc and the half shaft; the wheel hub is installed on the axle housing through the bearing to form the wheel hub assembly. The bearing is sealed in the hub bearing hole. The heat generated by the friction during operation will gradually consume the grease, and the impurities generated by the wear will affect the service life of the bearing. The bearing must be maintained regularly; vehicles that often travel long distances often do not Timely maintenance will lay hidden dangers for the safe driving of vehicles. Contents of the invention

[0003] The technical problem to be solved by the present invention is to provide a maintenance-free wheel hub assembly...

Examples

Embodiment Construction

[0030] Such as figure 1 The shown maintenance-free hub assembly includes a hub 10 that is rotatably connected to the axle housing 47 through a tapered roller bearing 32. An oil seal 50 is installed at the inner end of the bearing hole of the hub 10, and an oil seal is installed at the outer end sequentially from the inside to the outside. The nut sealing ring 9, the shaft head locking piece 8 and the shaft head locking nut 7, the nut sealing ring 9 and the oil seal 50 seal the two ends of the bearing hole of the wheel hub 10, and the outer surface of the wheel hub 10 is also equipped with a cover bearing hole The shaft head cover 2.

[0031] The wheel hub 10 is provided with an oil pipe with one end connected to the bearing hole, the axle housing 47 is provided with an oil drain hole 18 connecting the bearing hole of the wheel hub 10 and the inner cavity of the axle housing 47, and the axle head cover 2 is provided with two ends The oil passage 40 connecting the inner cavity ...