Vehicle tractor drive front axle cardan joint

Abstract

The invention discloses a gimbal of a front drive bridge of an automobile or a tractor and relates to a front drive bridge structure of the automobile. The gimbal consists of a gimbal joint, a bearing and two crossed axles; the gimbal joint is of a hollow cirque shape; the upper side and the lower side of a cirque body are extended with an axle sleeve seat respectively; each axle sleeve seat is provided with a circular hole; the upper circular hole and the lower circular hole of the single side are sequentially sleeved with a bearing of the side and an upper vertical axle and a lower vertical axle of the crossed axles; the distance between the axial leads of the vertical axle and the transverse axle of the crossed axles is between 3 and 15 mm; and the axial lead of the transverse axle is in the outer side of the axial lead of the vertical axle. The gimbal has the advantages that dual factors of the displacement of two axial leads of the crossed axles and the omission of a middle cylinder of the gimbal joint are superposed to shorten the gimbal and provide a shortened space for the design of a short bridge; and the gimbal has a compact and reasonable structure.

Description

Technical field: [0001] The invention relates to an automobile drive front axle structure. Background technique: [0002] Cars and tractors drive the front axle of the front axle and the rear axle is connected by a universal joint to ensure the power transmission when the angle between the wheel hub and the axle shaft changes. For heavy-duty cars and tractors, double cross universal joints are commonly used. section structure. [0003] At present, the structure of the double cross universal joint is a transverse shaft in which the upper part of the U-shaped fork of the front and rear axle shafts is looped on both sides of the cross shaft. And the upper and lower vertical shaft loopers of these two cross shafts are in the longitudinal bearing holes on both sides of the cross shaft joint head. [0004] The axial center lines of the longitudinal axis and the transverse axis of the cross shaft are in the same plane, and the universal joint head is in the shape of a hollow ring...

AI Technical Summary

Problems solved by technology

[0005] This structure has the following defects: first, the isolation cylinder increases the distance between the center distances of the cross shafts on both sides; second, there must be a certain steering clearance between the outer surface of the cylinder and the front end of the cross shaft to ensure that the maximum steering angle of the wheel hub is about 30 degrees When , the two do not contact, otherwise the turning cannot be realized, and this structure exists on both sides of the isolation cylinder, so it is the superposition of the two steering clearances

[0006] When the front axle of the car is required to be designed as a short bridge, such as a tractor due to the narrow mountain road or country road, under the same load capacity, the front axle under the car body should be as short as possible, and this structure cannot meet the requirements.

Images