Vibration-absorption long-life universal joint

Abstract

The invention discloses a vibration-absorption long-life universal joint. The vibration-absorption long-life universal joint mainly comprises a cross shaft, four bearings of the cross shaft are sleeved with shaft sleeves, and a circle of quill rollers are arranged between the shaft sleeves and the bearings; vibration-absorption gaskets are arranged between the quill rollers and the shaft sleeves;the bearings are provided with blind holes; and steel ball springs are installed between the bottoms of the blind holes and the vibration-absorption gaskets. According to the vibration-absorption long-life universal joint, the steel ball springs and the multiple gaskets are arranged between the universal joint cross shaft blind holes and the bearings, and the two-stage vibration absorption structure is formed. The porous gaskets can greatly increase the oil storage area, sufficiently absorb axial impact energy of the cross shaft to the bearings and buffer impact of the cross shaft to the bearings. The steel ball springs can convert kinetic energy which is generated when the cross shaft acts periodically in the axial direction into the elastic potential energy of the springs, the elastic potential energy of the springs is converted into internal energy through deformation energy of the spring structure, finally the internal energy is exhausted, and accordingly, the vibration absorptioneffect is achieved. Universal joint damage caused by impact of the cross shaft in the axial direction of the shaft diameter to the bearings is reduced, the lubricating performance of the bearings is improved, and the service life of the universal joint is prolonged.

Description

technical field [0001] The invention relates to the field of automobile universal joints, in particular to a vibration-absorbing and long-life universal joint. Background technique [0002] The universal joint has the function of transmitting torque and motion, and is the "joint" part of the drive shaft. When the transmission shaft rotates and transmits torque and motion, the bearing of the universal joint rotates circumferentially around the journal of the cross shaft of the universal joint to realize variable-angle power transmission. However, when the installation angle (working swing angle) of the transmission shaft is large and the speed is high, the universal joint bearing not only rotates around the universal joint cross shaft journal but also has a relative sliding in the axial direction of the cross shaft journal. The end of the shaft journal will produce periodic impact force on the bearing, and at the same time, there will be a mutual sliding shear friction betwe...

AI Technical Summary

Problems solved by technology

However, when the arrangement of the input and output ends of the universal joint drive shaft assembly exceeds the allowable angle, especially when there is high-speed operation at the same time, the uneven velocity pattern between the input and output ends of the universal joint drive shaft will obviously intensify, and the vibration will be abnormal. Periodic frequent impact between the neck end and the bottom of the bushing, the needle roller and the cross shaft cause axial slip shear, which seriously affects the service life of the universal joint

The traditional universal joint design has not formed an effective design solution for such high-speed and large-angle. Even if there is a nylon gasket structure, it can slightly reduce the impact vibration, but the effect is not significant. Therefore, the actual high-speed, large-angle commercial vehicle universal joint premature ablation

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