CN210118383U

CN210118383U - Vibration-absorbing long-life universal joint

Info

Publication number: CN210118383U
Application number: CN201920606496.5U
Authority: CN
Inventors: 牛杰; 高天芬; 叶连强; 董小忠; 周育江
Original assignee: Wanxiang Qianchao Co Ltd; Wanxiang Group Corp
Current assignee: Wanxiang Qianchao Co Ltd; Wanxiang Group Corp
Priority date: 2019-04-29
Filing date: 2019-04-29
Publication date: 2020-02-28
Anticipated expiration: 2029-04-29

Abstract

The utility model discloses a can inhale long-life universal joint that shakes mainly includes the cross, and four bearing overcoat of cross are equipped with the axle sleeve, are provided with the round kingpin between axle sleeve and the bearing, it shakes the gasket to set up between kingpin and the axle sleeve, it has the blind hole to open on the bearing, installs the steel ball spring bottom the blind hole and between shaking the gasket. The utility model discloses an place in steel ball spring and many gaskets between universal joint cross blind hole and the bearing, form two-stage shock-absorbing structure. The porous gasket can greatly increase the oil storage area, fully absorb the axial impact energy of the cross shaft to the bearing and buffer the impact of the cross shaft to the bearing. The steel ball spring can convert the axial periodic movement kinetic energy of the cross shaft into the elastic potential energy of the spring, and the elastic potential energy is converted into internal energy through the deformation energy of the spring structure and finally dissipated, so that the vibration absorption effect is achieved. The universal joint damage caused by the axial impact of the cross shaft along the shaft diameter on the bearing is reduced, the lubricating performance of the bearing is improved, and the service life of the universal joint is prolonged.

Description

Vibration-absorbing long-life universal joint

Technical Field

The utility model relates to a field of car universal joint, concretely relates to can inhale long-life universal joint that shakes.

Background

The universal joint has the function of transmitting torque and motion and is the 'joint' part of the transmission shaft. When the transmission shaft rotates to transmit torque and motion, the bearing of the universal joint rotates circumferentially around the universal joint cross shaft journal to realize variable-angle power transmission. However, when the installation angle (working pivot angle) of the transmission shaft is large and the rotating speed is high, the universal joint bearing not only rotates around the universal joint cross axle journal but also has relative sliding in the axial direction of the cross axle journal, at the moment, the end part of the cross axle journal can generate periodic impact force on the bearing, meanwhile, a mutual sliding shearing friction force exists between the cross axle journal and the needle roller, and vibration can be generated in severe cases. The vibration of the traditional universal joint is intensified under the working conditions of high speed and large angle of the transmission shaft, the abrasion is serious, the service life is short, and the comfort is poor.

The existing universal joint design assumes that the arrangement angle of a transmission shaft is small, the universal joint only rotates at unequal speed along with the transmission shaft, and the universal joint does not move along the axial direction of a cross shaft. However, when the arrangement of the input end and the output end of the universal joint transmission shaft assembly exceeds an allowable included angle, especially when high-speed operation exists at the same time, the unequal speed type of the input end and the output end of the universal joint transmission shaft is obviously intensified and abnormal in vibration, the end part of a shaft neck of a cross shaft and the bottom of a shaft sleeve are periodically and frequently impacted, and the roller pin and the cross shaft cause axial sliding shearing, so that the service life of the universal joint is seriously influenced. The traditional universal joint design does not form an effective design scheme for dealing with the high speed and large angle, and even if a nylon gasket structure exists, the impact vibration can be slightly reduced, but the effect is not significant, so that the phenomenon of premature ablation often occurs to the universal joint of the actual high-speed and large-angle commercial vehicle.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the not enough of prior art existence, and provide a can inhale long-life universal joint that shakes.

The purpose of the utility model is accomplished through following technical scheme: the vibration-absorbing long-life universal joint mainly comprises a cross shaft, wherein four bearings of the cross shaft are sleeved with shaft sleeves, a circle of roller pins are arranged between the shaft sleeves and shaft necks of the bearings, vibration-absorbing gaskets are arranged between the roller pins and the shaft sleeves, blind holes are formed in the bearings, steel ball springs are arranged between the bottoms of the blind holes and the vibration-absorbing gaskets, and small steel balls are arranged at two ends of each steel ball spring.

Furthermore, the vibration absorption gasket is of a porous structure, and a plurality of small holes are arranged in the vibration absorption gasket in an equidistant and staggered mode.

Furthermore, the natural length of the steel ball spring is larger than the distance between the bottom of the blind hole and the vibration absorption gasket.

The utility model has the advantages that: under the condition of not changing the whole structure of the transmission shaft, the steel ball helical spring and the porous gasket are arranged between the blind hole (through hole) of the universal joint cross shaft and the bearing, so that the energy caused by the axial impact force of the cross shaft on the bearing under the working conditions of high speed and large angle of the transmission shaft is absorbed, the lubricating performance is enhanced, the damage caused by the impact is reduced, and the service life of the universal joint is prolonged.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a partially enlarged schematic view of the vibration absorbing pad and the steel ball spring.

Description of reference numerals: the device comprises a cross shaft 1, a roller pin 2, a vibration absorption gasket 3, a shaft sleeve 4, a bearing 5, a steel ball spring 6 and a blind hole 7.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings:

example (b): as shown in the attached drawing, the vibration-absorbing long-life universal joint mainly comprises a cross shaft 1, a shaft sleeve 4 is sleeved outside four bearings 5 of the cross shaft 1, a circle of roller pin 2 is arranged between the shaft sleeve 4 and a shaft neck of each bearing 5, a vibration-absorbing gasket 3 is arranged between the roller pin 2 and the shaft sleeve 4, a blind hole 7 is formed in each bearing 5, a steel ball spring 6 is arranged between the bottom of the blind hole 7 and the vibration-absorbing gasket 3, the gasket and the blind hole of the cross shaft can be effectively prevented from being damaged by extrusion of a traditional flat end spring, and the two ends of each steel ball spring 6 are provided with small steel balls, and the steel ball spring is made of steel materials, nylon materials, rubber materials and the like according.

Preferably, the vibration absorption gasket 3 is of a porous structure, a plurality of small holes are arranged in the vibration absorption gasket 3 in an equidistant and staggered manner, and the number and the size of the holes are determined according to specific working conditions and structures; in addition, the vibration absorption gasket 3 can be manufactured by 3D printing, so that energy and materials are saved.

Preferably, the natural length of the steel ball spring 6 is greater than the distance between the bottom of the blind hole 7 and the vibration absorption gasket 3, so that the steel ball spring 6 is ensured to have certain initial elastic potential energy, and length change caused by space change is compensated when the cross shaft moves.

The embodiment of the utility model provides a can be used for maintenance type and exempt from maintenance type universal joint simultaneously.

The utility model discloses mainly used solves when the transmission shaft is high-speed, when the wide-angle installation, and the universal joint vibration aggravation, wearing and tearing are unusual, early wearing and tearing scheduling problem. The driving shaft universal joint is suitable for absorbing vibration under high-speed and large-angle working conditions. This novel universal joint is used at high speed, during the transmission shaft of wide angle, through bearing internally mounted steel ball spring and porous gasket, can turn into the elastic potential energy of spring and porous gasket with the kinetic energy of cross axle axial periodicity drunkenness to can change into internal energy through the deformation energy, finally dissipate goes out, thereby plays the effect of absorption vibration, reduces because the cross axle strikes the universal joint damage that the bearing leads to along the footpath axial, thereby improves universal joint life, and reinforcing travelling comfort.

It should be understood that equivalent substitutions or changes to the technical solution and the inventive concept of the present invention should be considered to fall within the scope of the appended claims for the skilled person.

Claims

1. The utility model provides a can inhale long-life universal joint that shakes mainly includes cross (1), and four bearing (5) overcoat of cross (1) are equipped with axle sleeve (4), are provided with round kingpin (2), its characterized in that between the axle sleeve (4) and the axle journal of bearing (5): vibration absorption gaskets (3) are arranged between the roller pins (2) and the shaft sleeve (4), blind holes (7) are formed in the bearings (5), steel ball springs (6) are installed between the bottoms of the blind holes (7) and the vibration absorption gaskets (3), and small steel balls are arranged at two ends of each steel ball spring (6).

2. The vibration-absorbable long-life gimbal according to claim 1, wherein: the vibration absorption gasket (3) is of a porous structure, and a plurality of small holes are arranged in the vibration absorption gasket (3) in a staggered mode at equal intervals.

3. The vibration-absorbable long-life gimbal according to claim 1, wherein: the natural length of the steel ball spring (6) is larger than the distance between the bottom of the blind hole (7) and the vibration absorption gasket (3).