CN101618734B

CN101618734B - Steering axle of automobile

Info

Publication number: CN101618734B
Application number: CN2009100405327A
Authority: CN
Inventors: 奥华多·贵达
Original assignee: Guangdong Fuwa Heavy Industry Co Ltd
Current assignee: Guangdong Fuwa Heavy Industry Co Ltd
Priority date: 2009-06-23
Filing date: 2009-06-23
Publication date: 2011-06-01
Anticipated expiration: 2029-06-23
Also published as: CN101618734A

Abstract

The invention relates to a steering axle of an automobile, comprising a shaft body, a steering joint and a connector for connecting the shaft body and the steering joint and enabling the steering joint to pivot and rotate around the shaft body, wherein the shaft body integrally comprises a shaft end, a shaft arm and a shaft center part, the shaft end, the shaft arm and the shaft center part are all hollow shaft tubes, a pivot rotation inserting block is arranged in the shaft end, and a hole for receiving the connector penetrates through the upper wall face and the lower wall face of the shaft end and the pivot rotation inserting block, the shaft end is a rectangle shaft tube, the left and right side walls of the shaft end is a U-shaped opening, an end opening with a snake mouth shape is formed by the upper and lower wall face outer rims and the side wall U-shaped opening. The steering axle of the automobile has the advantages of convenient processing and low manufacturing cost and can effectively enhance the mechanical properties of the rigidity, the bending-resistant and torsional strength and the like of an automobile axle.

Description

Steering axle of automobile

Technical field

The present invention relates to automotive axle, more particularly, relate to a kind of steeraxle that makes wheel deflection certain angle.

Background technology

The present automobile of common rear-axle drive on automotive market, it turns to propons mainly to comprise parts such as axis body, steering swivel, mostly axis body is forging molding, axis structure is the I-shaped solid beam commonly, generally on the H-girder axis body, suspension is installed, thereby the table plane of going up of H-girder slightly is wider than the table plane of going up at following table plane or middle some position and is wider than the following table plane, so that the installation support platform of suspension is enough roomy.At the visible a pair of tubular bearing in two ends that turn to propons, be that axis body forges back at both ends bore hole and gets, in the hole, adorn steering yoke bolt, this bearing is in order to connect pivoting between steering swivel and the axis body.The tooling cost of the I-shaped solid beam propons of this solid forging is bigger, and number of molds and expense are all very high, and commonality is not strong; Usually the propons that turns to that forges processing is prepared production from frock, and the duration is all very long, and correspondingly time of delivery is also very long; On the other hand, this propons in use deformation occurs because rigidity is not enough easily, causes unnecessary wear on tyres.

U.S. Pat 005429423A discloses another kind and has turned to preceding bridge construction, the principal character that it is different from above-mentioned prior art is that axis body uses hollow central siphon, insert the tubular bearing at the axis body two ends, and make it to be fixed on the axis body, steering swivel is pivoted with axis body connect with welding or other modes.Central siphon is approximate rectangular structure, connect by a pair of U type slot welding and to form, though the propons of this structure can solve the deficiency of axis body forging molding mode, but the mode of its central siphon welding causes adverse effect to the central siphon strength at repeated alternation again, and the cylindrical abutment of this scheme is fixing with welding or alternate manner, the position of welding is positioned at the high stress areas of axis body, makes that regional bending resistance, the torsional strength of antecurvature position are comparatively weak in the axis body end, has influenced the safety that turns to propons.

Summary of the invention

The object of the invention provides a kind of steering axle of automobile easy to process, cheap for manufacturing cost, improves mechanical characteristicss such as vehicle bridge rigidity and bending resistance torsional strength, to overcome the deficiencies in the prior art.

The technical solution adopted for the present invention to solve the technical problems is: a kind of steering axle of automobile, comprise axis body, steering swivel, the connector that connects described axis body and steering swivel and steering swivel is pivoted around axis body, it is characterized in that: described axis body is by axle head, armshaft and the whole formation of axle central part, axle head, armshaft and axle central part are hollow central siphon, described axle head is the rectangle central siphon, the built-in pivot inserted block of axle head, described axle head is run through in the hole that is used to take in described connector, lower wall surface and pivot inserted block, the left and right sides wall of described axle head is the U-shaped opening, forms the open-ended of a snake mouth shape by last lower wall surface outer rim and sidewall U-shaped opening.

Improvement of the technical scheme, the upper and lower wall outer margin contour of described axle head are semicircle.

A step again of technique scheme improves, and an end of described pivot inserted block is the semicircle cambered surface, and described pivot inserted block is to be incorporated in the space that the upper and lower semicircle wall by axle head surrounded.

A step again of technique scheme improves, and described pivot inserted block is fixing along the open-ended outer rim of snake mouth shape and the axle head welding of axle head.

The present invention has following beneficial effect:

1) the whole machine-shaping of steeraxle axis body belongs in the low stress area and finishes at the axle head that is welded on of built-in pivot inserted block of axle head and axis body, has improved the mechanical characteristics of whole steeraxle, has increased the service life of steeraxle.

2) to process required moulds of industrial equipment quantity little for the steeraxle axis body, and obviously reduction of erection time and time of delivery, frock expense, tooling cost obviously reduce, and the supporting alerting ability of product is strong.

3) the pivot inserted block is fixing along axis body end snake mouth shape outer rim and axis body welding, and firm welding is reliable.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is that the A of Fig. 1 is to scheme drawing;

Fig. 3 is an axis body of the present invention end inserted block structural representation.

The specific embodiment

As shown in Figure 1, as one embodiment of the present of invention, the invention provides a kind of steering axle of automobile of supporting and turning to function that has, steeraxle comprises the connector of axis body, steering swivel and pivot, and (connector of steering swivel and pivot is not shown, in the present invention, the connector of pivot adopts steering yoke bolt).Axis body is made of axle head 1, armshaft 2 and axle central part 3, and axle head 1, armshaft 2 and axle central part 3 are hollow central siphon, and the erecting stage of suspension is in the zone of axle central part 3.Armshaft 2 connects axle head 1 and axle central part 3 at a certain angle, makes the axle head 1 and the axle central part 3 of level have the pipeline section of smooth connection.Axis body is a hollow structure, and wherein axle head 1 and axle central part 3 are the square-section, and armshaft 2 is round section or sub-circular cross section.Axle head 1 built-in one metal pivot inserted block 4, the structure of pivot inserted block 4 is seen Fig. 2, pivot inserted block 4 is fixing with axle head 1 welding, overlook direction, axle head 1 is processed into semicircle end face with built-in metal pivot inserted block 4, sees Fig. 3, and steering swivel just can pivot freely around pivot like this.Run through axle head 1 and built-in metal inserted block perpendicular to processing one hole 5 of taking in connector on axle head 1 and the built-in metal pivot inserted block 4, the axial line in hole 5 departs from the midperpendicalar certain angle.Hole 5 can be the through hole of barrel-contoured or wedge shape, and steering yoke bolt or steering pivot or other pivot connector insert in this hole.

Be processed into side U-shaped opening at the left and right sides of axle head 1 wall, like this, be linked to be the open-ended of a snake mouth shape by lower wall surface on the semicircle and sidewall U-shaped opening, a built-in metallo-pivot inserted block 4, fixing along snake mouth outer rim pivot inserted block 4 with axle head 1 welding at axle head 1.

The propons that turns to of the present invention, the processing of axis body adopt the pipe roll extrusion to be square tube, to bend the process of moulding then, and concrete steps are as follows:

One, earlier circular shaft pipe two ends caliber is dwindled;

Two, with the axle central part 3 roll extrusion sides of pushing away, make the central siphon cross section be converted to the rectangle central siphon from circle;

Three, the axle two ends are processed as the axle head 1 of square-section;

Four, axis body is forged the type that curves;

Five, processing axle head 1 outer rim shape comprises the semicircle outer rim processing of sidewall U-shaped opening and upper and lower wall.

After the axis body machine-shaping, fill in a metallo-pivot inserted block 4 from the both sides axle head 1 of axis body, the outer end of this pivot inserted block 4 is the semicircle cambered surface, and the upper and lower wall outer margin contour of its shape and axle head 1 matches, and pivot inserted block 4 is weldingly fixed on the axle head 1 along axle head 1 border line.After 4 welding of pivot inserted block, perpendicular to axle head 1 upper and lower wall bore hole machining hole 5.Steering swivel connects with axis body by the steering yoke bolt of patchhole 5.

Compare with the front steering axle that forges processing, axis body processing tool of the present invention drops into and can greatly reduce, whole axis body is the single type structure, axle head 1, armshaft 2,3 of axle central parts need not be welded to connect, the welding position of axle head 1 and pivot inserted block 4 has strengthened the security of axis body in the low stress area of axis body; Axle central part 3 is the square-section, makes axis body that better rigid design be arranged, and has obvious progress than prior art.

Claims

1. steering axle of automobile, comprise axis body, steering swivel, the connector that connects described axis body and steering swivel and steering swivel is pivoted around axis body, it is characterized in that: described axis body is by axle head (1), armshaft (2) and axle central part (3) are whole to be constituted, axle head (1), armshaft (2) and axle central part (3) are hollow central siphon, described axle head (1) is the rectangle central siphon, the built-in pivot inserted block of axle head (4), described axle head is run through in the hole (5) that is used to take in described connector, lower wall surface and pivot inserted block (4), the left and right sides wall of described axle head (1) is the U-shaped opening, forms the open-ended of a snake mouth shape by last lower wall surface outer rim and sidewall U-shaped opening.

2. steering axle of automobile according to claim 1 is characterized in that: the upper and lower wall outer margin contour of described axle head (1) is for semicircle.

3. steering axle of automobile according to claim 2 is characterized in that: an end of described pivot inserted block (4) is the semicircle cambered surface, and described pivot inserted block (4) is to be incorporated in the space that the upper and lower semicircle wall by axle head (1) surrounded.

4. steering axle of automobile according to claim 3 is characterized in that: described pivot inserted block (4) is fixing along the open-ended outer rim of snake mouth shape and axle head (1) welding of axle head (1).