Maintenance-free high-sealing universal joint cross shaft and application method thereof

Abstract

The invention discloses a maintenance-free high-sealing universal joint cross shaft. The maintenance-free high-sealing universal joint cross shaft comprises a universal joint base body, wherein an end is arranged at the tail end of the universal joint base body, the end is sleeved with a bearing sleeve in a matched and movable sealing mode, an inner concave ring is arranged at an opening of the bearing sleeve, an oil seal is detachably arranged on the inner concave ring, and the bearing sleeve extrudes out air between the end and the bearing sleeve through the oil seal, and then the end is sleeved with a vacuum beam; and the bottom of the outer side of the end is detachably sleeved with a dust cap in a matched mode, and the oil seal and the dust cap are matched and movably connected in a sealed clamping and sleeving mode. Meanwhile, the invention further discloses an application method of the maintenance-free high-sealing universal joint cross shaft. Through the arrangement of the bearing sleeve and the oil seal structure, the bearing sleeve extrudes out air between the end of the cross shaft base body and the bearing sleeve through the oil seal, then the end is sleeved with the vacuum beam, grease in the bearing sleeve is in a vacuum negative pressure state through vacuum pressure, the problem that the grease flows out is solved, and the maintenance-free function of the universal joint cross shaft is achieved.

Description

technical field [0001] The invention relates to the field of design and production of auto parts, and more specifically relates to a maintenance-free and highly sealed universal joint cross shaft and a use method thereof. Background technique [0002] The universal joint cross shaft is an automobile universal joint, which is a component that realizes variable-angle power transmission. It is used to change the direction of the transmission axis. The combination of the cross shaft and the transmission shaft is called the universal joint cross shaft transmission device. On vehicles with front-engine rear-wheel drive, the universal joint cross shaft transmission device is installed between the output shaft of the transmission and the input shaft of the drive axle final drive; while the vehicle with front-engine front-wheel drive omits the drive shaft, the cardan The joint cross shaft is installed between the front axle half shaft and the wheel, which is responsible for both dri...

AI Technical Summary

Problems solved by technology

[0005] 1. The oil seal is clamped and protected by the structure of the retaining ring and the retaining ring. There is still a problem of grease leakage between the clamping degree and the clamping gap. Seepage in tight gaps requires oiling treatment from time to time, which affects the use of the cross shaft

[0006] 2. The stability of the oil seal or dust cover is poor. When it is bumped or squeezed, the oil seal or dust cover is prone to deformation. Once deformed, it is easy to leak oil. At the same time, the cross shaft needs to be maintained, which affects its use

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