CN210118382U

CN210118382U - Spring vibration absorption type novel long-life universal joint

Info

Publication number: CN210118382U
Application number: CN201920606488.0U
Authority: CN
Inventors: 牛杰; 高天芬; 周育江; 叶连强; 董小忠
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 novel long-life universal joint of formula is inhaled to spring mainly includes the cross, and four bearing overcoat of cross are equipped with the axle sleeve, are provided with the round kingpin between the axle sleeve and the axle journal of bearing, set up the gasket between kingpin and the axle sleeve, it has the blind hole to open on the bearing, installs the steel ball spring between blind hole bottom and gasket, and the both ends of steel ball spring all have little steel ball. The utility model provides a transmission shaft when high-speed, wide-angle installation, short-lived, the poor problem of travelling comfort. This novel universal joint is used in high-speed, when the transmission shaft of wide angle, the inside coil spring of bearing can turn into the elastic potential energy of spring with the kinetic energy of cross axle axial periodicity drunkenness to can change into internal energy through the deformation of spring structure, finally dissipate away, thereby play the effect of absorption vibration, reduce because the cross axle along the shaft footpath axial impact bearing and the universal joint damage that leads to, thereby improve universal joint life, and reinforcing travelling comfort.

Description

Spring vibration absorption type novel long-life universal joint

Technical Field

The utility model relates to a field of car universal joint, concretely relates to novel long-life universal joint of formula is inhaled to spring.

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 novel long-life universal joint of formula is inhaled to spring.

The purpose of the utility model is accomplished through following technical scheme: the spring vibration absorption type novel long-life universal joint mainly comprises a cross shaft, wherein four bearing sleeves of the cross shaft are sleeved with a shaft sleeve, a circle of roller pin is arranged between the shaft sleeve and a shaft neck of a bearing, a gasket is arranged between the roller pin and the shaft sleeve, a blind hole is formed in the bearing, a steel ball spring is arranged between the bottom of the blind hole and the gasket, and small steel balls are arranged at two ends of the steel ball spring.

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: the steel ball spring is arranged between the blind hole (through hole) of the universal joint cross shaft and the bearing gasket in a built-in mode, so that the axial impact energy of the cross shaft on the bearing is absorbed, the impact of the cross shaft on the bearing is buffered, and the damage of the impact of the cross shaft on the bearing is reduced to the maximum extent. Meanwhile, the periodic expansion of the spring can enhance the grease fluidity in the cross shaft oil hole and improve the lubricating performance of the bearing, so that the service life of the universal joint is prolonged and the comfort of the whole vehicle is improved.

Drawings

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

Fig. 2 is a partially enlarged schematic view of the steel ball spring.

Description of reference numerals: the device comprises a cross shaft 1, a roller pin 2, a gasket 3, a shaft sleeve 4, a bearing 5, a 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 spring vibration absorption type novel 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 pins 2 are arranged between the shaft sleeve 4 and the shaft neck of the bearing 5, a gasket 3 is arranged between the roller pins 2 and the shaft sleeve 4, a blind hole 7 is formed in the bearing 5, a steel ball spring 6 is arranged between the bottom of the blind hole 7 and the gasket 3, the two ends of the steel ball spring 6 are provided with small steel balls, the structure of the steel ball spring can be made of materials such as steel, nylon and rubber according to working condition requirements, and the traditional flat end spring can be effectively prevented from being damaged by extrusion on the gasket 3 and the cross shaft blind hole.

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 under the condition that does not change transmission shaft overall structure, place in through adopting the steel ball spring between universal joint cross blind hole (through-hole) and the bearing gasket, absorb the transmission shaft under high-speed, the wide-angle operating mode the cross to the energy that the axial impact force of bearing brought, reduce the damage that the impact brought, improve universal joint life.

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 novel long-life universal joint of formula is inhaled to spring 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): a gasket (3) is arranged between the roller pin (2) and the shaft sleeve (4), a blind hole (7) is formed in the bearing (5), a steel ball spring (6) is installed between the bottom of the blind hole (7) and the gasket (3), and small steel balls are arranged at two ends of the steel ball spring (6).

2. The spring-absorbing type novel long-life gimbal as claimed in 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).