CN202641262U

CN202641262U - Bearing structure of carriage axle

Info

Publication number: CN202641262U
Application number: CN 201220282178
Authority: CN
Inventors: 吴志强; 吴银初; 黄志荣
Original assignee: Guangdong Fuwa Engineering Manufacturing Co Ltd
Current assignee: Guangdong Fuwa Heavy Industry Co Ltd
Priority date: 2012-06-14
Filing date: 2012-06-14
Publication date: 2013-01-02
Anticipated expiration: 2022-06-14

Abstract

The utility model discloses a bearing structure of a carriage axle. The axle head of the carriage axle passes through a wheel hub. An inner bearing and an outer bearing are arranged between the axle head and the wheel hub. The outer ring surfaces of the inner and outer bearings are contacted with the surface of a cavity of the wheel hub. The inner rings of the inner and outer bearings are contacted with the surface of the axle head. A bearing space bush is arranged between the inner and outer bearings. The bearing space bush comprises a sleeve body, a first orifice and a second orifice. According to the bearing structure of the carriage axle provided by the utility model, the bearing spacer bush is utilized, and the end faces of the orifices on both sides of the bearing spacer bush are respectively contacted with the inner ring end faces of the inner and outer bearings to position so as to fix the gap between the inner and outer bearings, therefore, error generated by manual adjustment in later stage is avoided, and the gap precision is improved.

Description

A kind of Axle bearing structure

Technical field

The utility model relates to the automobile axle field, more particularly, relates to a kind of Trailer car shaft bearing arrangement.

Background technology

Trailer car shaft in the market, axletree comprises spindle nose and central siphon, be provided with hub bearing between spindle nose and wheel hub, hub bearing is a pair of tapered roller bearing, be respectively neck bearing and outer bearing, the outer ring lateral surface of bearing and the surface of internal cavity location and installation of wheel hub, the inner ring medial surface of bearing and spindle nose excircle orientation are installed, and axis head nut is adjusted bearing clearance.The size of bearing clearance is very big to the axletree performance impact, suitable working gap can improve the reliability of axletree, thereby, as automobile load-bearing and the vitals that accurately leads, control for the hub bearing assembly clearance is very important, on the technology of existing adjustment bearing space, complex operation step, comprise operations such as adjusting play, grease-added, pretension, Hui Song, operate miss appears easily, assembly difficulty is large, gap precision is difficult to guarantee, makes troubles for the installation of trailer axle, maintenance.

The utility model content

The deficiency that the utility model purpose exists in order to overcome above-mentioned prior art provides a kind of avoiding manually to adjust the play size, and mounting process is simple, avoids personal error, improves the Axle bearing structure of gap precision.

The utility model scheme is as follows: a kind of Axle bearing structure, axle head is in wheel hub, be provided with neck bearing and outer bearing between described spindle nose and described wheel hub, the surface, outer ring of described neck bearing and described outer bearing contacts the inner ring of described neck bearing and described outer bearing and the Surface Contact of described spindle nose with the surface of internal cavity of described wheel hub.Be provided with the bearing spacer between described neck bearing and described outer bearing, described bearing spacer comprises body, first mouth of pipe and second mouth of pipe.

The inner ring end face of the end face of described first mouth of pipe and neck bearing against.

The inner ring end face of the end face of described second mouth of pipe and outer bearing against.

The inwall of described first mouth of pipe is resisted against the surface on the described spindle nose.

The inwall of described second mouth of pipe is resisted against the surface on the described spindle nose.

Described bearing spacer is tubular structure.

The utility model compared with prior art, its beneficial effect is:

The utility model Axle bearing structure is utilized the bearing spacer, the both sides mouth of pipe end face of bearing spacer respectively with neck bearing and outer bearing the inner ring end contact, position with the fixing gap between neck bearing and the outer bearing, avoid the artificial error that produces of adjusting of later stage, improve gap precision.

Description of drawings

Fig. 1 is the structural representation of the utility model adjustment-free bearing space spindle nose;

Fig. 2 is the cutaway view of the bearing spacer of the utility model adjustment-free bearing space spindle nose;

Fig. 3 is the structural representation of the bearing spacer of the utility model adjustment-free bearing space spindle nose;

The specific embodiment

Below pass through the specific embodiment, and the utility model is described in further detail by reference to the accompanying drawings.

As shown in Figure 1, 2, 3, the utility model discloses a kind of Axle bearing structure.Trailer car shaft is servo-actuated axletree, bearing vehicle weight and cargo load, and for the support tire rotation, it mainly comprises axis body, wheel hub 1, brake wheel 7, brake shoe assembly, reaches the camshaft assembly (not shown), axis body is divided into spindle nose 21 two large divisions at central siphon 22 and two ends, and wheel hub 1, brake wheel 7 general assemblies are used for carrying out vehicle wheel rotation and braking on the spindle nose 21 at axis body two ends, brake shoe assembly 8 is installed in the brake wheel 7, and its brake facing is made by the asbestos less friction environment-friendly materials.Spindle nose 21 is in wheel hub 1, and 1 of spindle nose 21 and wheel hub are provided with neck bearing 3 and outer bearing 4, and the surface, outer ring of neck bearing 3 and outer bearing 4 contacts the inner ring of neck bearing 3 and outer bearing 4 and the Surface Contact of spindle nose 21 with the surface of internal cavity of wheel hub 1.Axis head nut 5 is threaded with spindle nose 21, and axis head nut 5 is fixed in the outermost of spindle nose 21.Be provided with bearing spacer 6 between neck bearing 3 and outer bearing 4, bearing spacer 6 is tubular structure.Bearing spacer 6 comprises body 61, first mouth of pipe 62 and second mouth of pipe 63.The inwall that the inner ring of neck bearing 3 is resisted against surface on the spindle nose 21 and first mouth of pipe 62 against, and the inner ring end face of the end face of first mouth of pipe 62 and neck bearing 3 against.The inwall that the inner ring of outer bearing 4 is resisted against surface on the spindle nose 21 and second mouth of pipe 62 against, and the inner ring end face of the end face of second mouth of pipe 62 and neck bearing 3 against.

Because first mouth of pipe 62 and second mouth of pipe 63 of bearing spacer 6 are pressed on respectively on the inner ring of interior outer bearing, the neck bearing inner ring then location and installation on the spindle nose step, locate with axis head nut the outer end of outer bearing, thereby make the position of two bearings inner ring be able to precisely determine.

Since first mouth of pipe 62 of bearing spacer 6 and the inner ring end face of neck bearing 4 against the inner ring end face of, second mouth of pipe 63 and outer bearing 4 against.By application force on axis head nut 5, the application force that axis head nut 5 is subject to along with force transmission to the inner ring of outer bearing 4, be directly delivered to again on the bearing spacer 6, be delivered at last on the inner ring of neck bearing 3.When the moment of application force reached predetermined value, neck bearing 3 had been fixed with the position of outer bearing 4.Thereby the gap between neck bearing 3, spacer 6 and the outer bearing 4 has reached predetermined value, does not need to adjust, and settles at one go, has guaranteed the precision in gap, improves bearing life.

The utility model Axle bearing structure is by bearing spacer 6, and fixedly the artificial error that produces of adjusting of later stage has been avoided in the gap between neck bearing 3 and the outer bearing 4, has guaranteed the precision in gap.

Claims

1. Axle bearing structure, comprise axis body, wheel hub, brake wheel, brake shoe assembly, reach camshaft assembly, be provided with neck bearing and outer bearing between described wheel hub and spindle nose, the outer ring location and installation of described neck bearing and described outer bearing is at the inner chamber of described wheel hub, the inner ring of described neck bearing and described outer bearing and the Surface Contact of described spindle nose, it is characterized in that: described neck bearing location and installation is on the step of spindle nose, between neck bearing and described outer bearing, be provided with the bearing spacer, be provided with axis head nut in the outer bearing outside.

2. Axle bearing structure as claimed in claim 1, it is characterized in that: described bearing spacer comprises body, first mouth of pipe and second mouth of pipe, the inner ring end face of the end face of described first mouth of pipe and neck bearing against.

3. Axle bearing structure as claimed in claim 2 is characterized in that: the inner ring end face of the end face of described second mouth of pipe and outer bearing against.

4. Axle bearing structure as claimed in claim 3, it is characterized in that: the inwall of described first mouth of pipe is resisted against the surface on the described spindle nose.

5. Axle bearing structure as claimed in claim 4, it is characterized in that: the inwall of described second mouth of pipe is resisted against the surface on the described spindle nose.

6. Axle bearing structure as claimed in claim 5, it is characterized in that: described bearing spacer is tubular structure.