CN218805003U

CN218805003U - Large-rotation-angle steering drive axle half shaft assembly

Info

Publication number: CN218805003U
Application number: CN202223293355.3U
Authority: CN
Inventors: 沈辉; 雷德浪
Original assignee: Changzhou Daocheng Transmission Technology Co ltd
Current assignee: Changzhou Daocheng Transmission Technology Co ltd
Priority date: 2022-12-08
Filing date: 2022-12-08
Publication date: 2023-04-07
Anticipated expiration: 2032-12-08

Abstract

The utility model belongs to the technical field of engineering machine tool and agricultural machine steering drive axle technique and specifically relates to a big corner steering drive axle semi-axis assembly, it includes the bifurcate, two universal joints, minor axis and major axis, the path of lining up that link up about the bifurcate has, the both ends of lining up the passageway are equipped with dodges the breach, a universal joint is connected respectively at both ends about the bifurcate, minor axis and major axis are connected respectively to two universal joints, the universal joint includes the universal joint main part, the universal joint main part is formed with the left axle journal and the right axle journal of connecting minor axis or major axis towards left and right direction protrusion respectively, universal joint main part up down direction protrusion respectively is formed with the last journal and the lower axle journal of connecting the bifurcate, the central line of left axle journal and right axle journal is on same straight line, and the eccentric setting of both relative universal joint main parts, the eccentricity is 3mm. The utility model discloses a universal joint adopts eccentric cross axle structure, and the eccentricity is 3mm, realizes that the turned angle of minor axis and major axis is greater than 72 degrees, dodges the breach on the double fork, avoids forming between minor axis, major axis and the double fork and interferes.

Description

Large-rotation-angle steering drive axle half shaft assembly

Technical Field

The utility model belongs to the technical field of engineering machine tool and agricultural machine steering axle technique and specifically relates to a big corner steering drive axle semi-axis assembly.

Background

In many construction vehicles and agricultural vehicles, the front axle also functions as a drive axle in addition to a steering axle, and is called a steering drive axle. The steering drive axle is the same as a common drive axle and is provided with a main speed reducer and a differential mechanism, but because a steering wheel needs to deflect around a main sheath for an angle during steering, a half shaft connected with the steering wheel is divided into an inner half shaft and an outer half shaft, and the inner half shaft and the outer half shaft are connected by a universal joint. The dual-coupling universal joint allows the two shafts to have larger included angle, and has high effect and reliable work. The maximum rotation angle of a traditional steering drive axle half shaft assembly can only meet 56 degrees, the maximum rotation angle can be 61 degrees at present, but some customers put forward the requirement of a larger rotation angle, the traditional steering drive axle half shaft assembly is particularly applied to special operation places and special working condition environments, the large steering advancing of a vehicle can be conveniently realized, and the production operation efficiency is improved; therefore, the structure of the existing half shaft assembly of the steering drive axle needs to be modified.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: overcomes the defects in the prior art and provides a large-turning-angle steering drive axle half shaft assembly.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a wide-angle steering drive axle semi-axis assembly, includes bifurcate, two universal joints, minor axis and major axis, the bipurcate has the through channel who link up about, the both ends of link up the channel are equipped with dodges the breach, and a universal joint is connected respectively at both ends about the bifurcate, and minor axis and major axis are connected respectively to two universal joints, the universal joint includes the universal joint main part, the universal joint main part is formed with the left axle journal and the right axle journal of connecting minor axis or major axis towards left and right direction protrusion respectively, and the universal joint main part is the protrusion respectively to the up-down direction and is formed with the upper journal and the lower axle journal of connecting the bifurcate, the central line of left side axle journal and right axle journal is on same straight line, and the relative universal joint main part eccentric settings in both, and the eccentricity is 3mm.

Furtherly, dodge the breach and include first concave arc breach and second concave arc breach, form the installation department of universal joint through the circular arc transition between first concave arc breach and the second concave arc breach, set up the mounting hole that supplies last axle journal and lower axle journal to stretch into on the installation department.

Furthermore, the upper shaft neck and the lower shaft neck are arranged in the mounting hole through a needle bearing, and a clamp spring is arranged on one end face of the needle bearing, which extends into the mounting hole.

Furthermore, the short shaft and the long shaft are both provided with U-shaped connectors, two ends of each connector are provided with limiting holes for the left shaft neck and the right shaft neck to extend into, the left shaft neck and the right shaft neck are arranged in the limiting holes through needle bearings, and clamp springs are arranged on end faces of the ends, extending into the limiting holes, of the needle bearings.

Furthermore, one ends of the short shaft and the long shaft, which are far away from the connecting head, are respectively provided with an external gear and an external spline.

Still further, the minor and major axes are rotated by an angle greater than 72 °.

The beneficial effects of the utility model are that: the utility model discloses an universal joint adopts eccentric cross axle structure, and the eccentricity is 3mm to the turned angle who realizes minor axis and major axis equals or is greater than 72 degrees, dodges the breach on the bifurcate and has set up first concave arc breach and second concave arc breach, avoids forming between minor axis, major axis and the bifurcate and interferes, and rotates in a flexible way, no jamming phenomenon.

Drawings

The present invention will be further described with reference to the accompanying drawings and embodiments.

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

Fig. 2 is a schematic structural diagram of the middle universal joint of the present invention.

Fig. 3 is a front view of fig. 2.

Fig. 4 is a schematic structural view of the middle fork of the present invention.

Fig. 5 is a cross-sectional view of the present invention rotated in one direction to the maximum rotation angle.

Fig. 6 is a cross-sectional view of the present invention rotated in another direction to a maximum rotation angle.

In the figure: 1. the universal joint comprises a double fork, 2 parts of a universal joint, 3 parts of a short shaft, 4 parts of a long shaft, 10 parts of a through channel, 11 parts of an avoiding notch, 21 parts of a universal joint main body, 22 parts of a left shaft neck, 23 parts of a right shaft neck, 24 parts of an upper shaft neck, 25 parts of a lower shaft neck, 111 parts of a first concave arc notch, 112 parts of a second concave arc notch, 113 parts of an installation part, 1131 parts of an installation hole, 5 parts of a needle bearing, 6 parts of a snap spring, 34 parts of a connector, 341 parts of a limiting hole.

Detailed Description

The invention will now be further described with reference to the accompanying drawings. The drawings are simplified schematic diagrams only illustrating the basic structure of the present invention in a schematic manner, and thus show only the components related to the present invention.

As shown in fig. 1 to 4, a large-rotation-angle steering drive axle half shaft assembly includes a double fork 1, two universal joints 2, a short shaft 3 and a long shaft 4, the double fork 1 has a through channel 10 running through from left to right, two ends of the through channel 10 are provided with avoidance notches 11, the left and right ends of the double fork 1 are respectively connected with one universal joint 2, the two universal joints 2 are respectively connected with the short shaft 3 and the long shaft 4, the universal joint 2 includes a universal joint main body 21, the universal joint main body 21 is respectively formed with a left journal 22 and a right journal 23 protruding from the short shaft 3 or the long shaft 4 in the left and right directions, the universal joint main body 21 is respectively formed with an upper journal 24 and a lower journal 25 protruding from the double fork 1 in the up and down directions, the center lines of the left journal 22 and the right journal 23 are on the same straight line, and the left journal and the right journal are eccentrically arranged relative to the universal joint main body 21, and the eccentricity is 3mm.

As shown in fig. 4, the avoiding notch 11 includes a first concave arc notch 111 and a second concave arc notch 112, a mounting portion 113 of the universal joint 2 is formed between the first concave arc notch 111 and the second concave arc notch 112 through arc transition, and a mounting hole 1131 for the upper journal 24 and the lower journal 25 to extend into is formed in the mounting portion 113. The edge of the avoiding gap 11 can be provided with an elastic edge covering, so that the friction between the elastic edge covering and the short shaft 3 and the friction between the elastic edge covering and the long shaft 4 are reduced during assembly and use.

As shown in fig. 2 and 3, the upper journal 24 and the lower journal 25 are disposed in the mounting hole 1131 through the needle bearing 5, and a snap spring 6 is disposed on an end surface of one end of the needle bearing 5 extending into the mounting hole 1131. Referring to fig. 1, the short shaft 3 and the long shaft 4 both have U-shaped connectors 34, two ends of each connector 34 are provided with a limiting hole 341 into which the left journal 22 and the right journal 23 extend, the left journal 22 and the right journal 23 are disposed in the limiting hole 341 through the needle bearing 5, and a clamp spring 6 is disposed on an end surface of one end of the needle bearing 5 extending into the limiting hole 341. One ends of the short shaft 3 and the long shaft 4, which are far away from the connector 34, are respectively provided with an external gear and an external spline, and the short shaft 3 is connected with a wheel edge reduction gear of a driving wheel through the external gear; the long shaft 4 is connected with the inner spline of the differential through the outer spline.

As shown in fig. 5 and 6, the rotation angles of the short axis 3 and the long axis 4 can realize large rotation angles larger than 72 degrees in both directions, and the device has good effect and reliable performance.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable people skilled in the art to understand the contents of the present invention and implement the present invention, and the protection scope of the present invention can not be limited thereby, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a big corner steering drive axle semi-axis assembly, includes bifurcate (1), two universal joint (2), minor axis (3) and major axis (4), its characterized in that: two forks (1) have about having through-channel (10), the both ends of through-channel (10) are equipped with dodge breach (11), and a universal joint (2) are connected respectively to two universal joints (2) about two forks (1), and minor axis (3) and major axis (4) are connected respectively in two universal joints (2), universal joint (2) are including universal joint main part (21), universal joint main part (21) bulge respectively towards the left and right direction and are formed with left journal (22) and right journal (23) of connecting minor axis (3) or major axis (4), and universal joint main part (21) bulge respectively to the direction of going up and down is formed with upper journal (24) and lower journal (25) of connecting two forks (1), the central line of left side journal (22) and right journal (23) is on same straight line, and relative universal joint main part (21) eccentric settings between them, and the eccentricity is 3mm.

2. The large-turning-angle steering drive axle half shaft assembly according to claim 1, wherein: dodge breach (11) including first concave arc breach (111) and second concave arc breach (112), form installation department (113) of universal joint through the circular arc transition between first concave arc breach (111) and second concave arc breach (112), set up mounting hole (1131) that confession journal (24) and lower journal (25) stretched into on installation department (113).

3. The large-turning-angle steering drive axle half shaft assembly according to claim 2, wherein: the upper journal (24) and the lower journal (25) are arranged in the mounting hole (1131) through the needle bearing (5), and a clamp spring (6) is arranged on the end face of one end, extending into the mounting hole (1131), of the needle bearing (5).

4. The large-turning-angle steering drive axle half shaft assembly as claimed in claim 1, wherein: the short shaft (3) and the long shaft (4) are both provided with U-shaped connectors (34), two ends of each connector (34) are provided with limiting holes (341) for the left journal (22) and the right journal (23) to extend into, the left journal (22) and the right journal (23) are arranged in the limiting holes (341) through needle bearings (5), and clamp springs (6) are arranged on end faces of the ends, extending into the limiting holes (341), of the needle bearings (5).

5. The large-turning-angle steering drive axle half shaft assembly according to claim 4, wherein: and one ends of the short shaft (3) and the long shaft (4) far away from the connector (34) are respectively provided with an external gear and an external spline.

6. The large-turning-angle steering drive axle half shaft assembly according to claim 1, 4 or 5, wherein: the rotation angle of the short shaft (3) and the long shaft (4) is larger than 72 degrees.