CN113803377A

CN113803377A - Cross shaft structure of universal joint

Info

Publication number: CN113803377A
Application number: CN202010556341.2A
Authority: CN
Inventors: 王维澈
Original assignee: Xi'an Three Sound Auto Parts Co ltd
Current assignee: Xi'an Three Sound Auto Parts Co ltd
Priority date: 2020-06-17
Filing date: 2020-06-17
Publication date: 2021-12-17

Abstract

The invention discloses a universal joint cross shaft structure, which comprises a cross shaft main body, a shaft sleeve, a roller pin, an oil seal assembly, a dustproof sleeve, an oil storage cavity, a first grease screw hole, a second grease screw hole, a third grease screw hole, a fourth grease screw hole and a thrust bearing, wherein the shaft sleeve is sleeved on the outer walls of two ends of the cross shaft main body; the thrust bearings are arranged on the end face of the cross shaft and the inner end face of the shaft sleeve, conventional sliding friction of the cross shaft section is changed into rolling friction, friction force is greatly reduced, and the risk that an end face oil film fails to cause failure of a cross shaft assembly when large axial force exists is solved; the application range and the service life of the universal joint pin universal joint are greatly widened.

Description

Cross shaft structure of universal joint

Technical Field

The invention relates to the technical field of universal joint transmission structures, in particular to a universal joint cross shaft structure.

Background

The universal joint is a universal joint, is a machine part for realizing variable-angle power transmission, is used for changing the position of a transmission axis direction, and is a joint part of a universal transmission device of an automobile driving system; the universal joint transmission shaft is suitable for all axles, but the conventional universal joint can generate a universal joint end face and a bearing end face under the working conditions of large included angle, high rotating speed and large torque, and the formation of a lubricating oil film is damaged due to large pressure and high relative movement speed, so that the universal joint fails at high temperature; wherein the inside packing of cross of universal joint has the butter, but the inside oil storage chamber of traditional cross does not communicate, and the butter can not be convenient communicate and flow, and traditional universal joint cross does not have the dirt proof boot, only relies on the entering that the oil blanket can not prevent silt, if leads to the early inefficacy of oil blanket.

Disclosure of Invention

The present invention is directed to a universal joint cross structure to solve the above problems.

In order to solve the technical problems, the invention provides the following technical scheme: a universal joint cross shaft structure comprises a cross shaft main body, a shaft sleeve, a roller pin, an oil seal sleeve, an oil storage cavity, a first grease screw hole, a second grease screw hole, a third grease screw hole, a fourth grease screw hole and a thrust bearing, wherein the shaft sleeve is sleeved on the outer walls of four ends of the cross shaft main body;

according to the technical scheme, the number of the oil conveying passages, the number of the bearing sleeves, the number of the oil seal assemblies and the number of the dustproof sleeves are four.

According to the technical scheme, the inner wall of the middle part of the shaft sleeve is provided with the roller pins in a sleeved mode.

According to the technical scheme, the thrust bearing is installed on the inner wall of the bottom end of the shaft sleeve.

Compared with the prior art, the invention has the following beneficial effects: according to the invention, the thrust bearings are arranged on the end surface of the traditional cross shaft and the inner end surface of the shaft sleeve, so that the conventional sliding friction of the cross shaft section is changed into rolling friction, the friction force is greatly reduced, and the risk of failure of a cross shaft assembly caused by failure of an oil film on the end surface in the case of large axial force is solved; the application range and the service life of the universal joint of the cross shaft are greatly widened; the through oil storage cavity is beneficial to grease entering the shaft sleeve, the internal bearing rotating structure is lubricated, and the service life of the cross shaft is prolonged; the grease nozzles are arranged on the shaft sleeves, so that the grease can be completely injected in later maintenance, the dustproof sleeve is added, the early failure of the oil seal can be avoided, and the effect of improving the product performance is achieved; .

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.

In the figure: 1. a bearing housing; 2. plugging by screwing; 3. a thrust bearing; 4. rolling needles; 5. an oil seal assembly; 6. a dust ring;

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a universal joint's cross axle structure, includes cross axle main part, bearing housing (1), kingpin (4), oil blanket assembly (5), dirt proof boot (6), oil storage chamber, first butter screw, second butter screw, third butter screw, fourth butter screw, thrust bearing (3), its characterized in that: all cup joint on four end outer walls of cross main part and install axle sleeve (1), the bearing groove has been seted up to corresponding on the four end outer walls of cross main part and the top inner wall of bearing housing (1), thrust bearing (3) are installed to the inner wall of bearing groove inlaying, the oil storage chamber has been seted up to the inside center department of cross main part, and four butter screws are used for the oiling.

2. A cross shaft structure of a universal joint according to claim 1, wherein: the inside of oil storage chamber all is filled with the butter.

3. A cross shaft structure of a universal joint according to claim 1, wherein: and the inner wall of the middle part of the bearing sleeve (1) is provided with roller pins (4) in a distributed manner.

4. A cross shaft structure of a universal joint according to claim 1, wherein: and an oil seal assembly (5) and a dustproof sleeve (6) are sleeved on the inner wall of the bottom end of the bearing sleeve (1).