CN112248716A

CN112248716A - Mining dumper hub

Info

Publication number: CN112248716A
Application number: CN202011283879.7A
Authority: CN
Inventors: 董志明; 郭海全; 杨芙蓉; 潘艳君; 李显武; 田峰; 赵新春; 邬青峰
Original assignee: Inner Mongolia North Hauler JSCL
Current assignee: Inner Mongolia North Hauler JSCL
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2021-01-22

Abstract

The invention discloses a mining dump truck hub, which comprises: the hub, the hub bearing, the half-shaft sleeve, the adjusting nut, the outer key plate and the bolt with the hole; the hub bearing is arranged on the half-shaft sleeve, the hub is arranged on the hub bearing, the hub bearing is positioned between the half-shaft sleeve and the hub, and the adjusting nut is arranged on the external thread on the half-shaft sleeve through the internal thread and is attached to the outer end face of the hub bearing; the outer key plate is positioned on the outer side of the adjusting nut, the lower part of the outer key plate is inserted on the outer key of the semi-shaft sleeve, and the upper part of the outer key plate is fixed on the adjusting nut through a bolt with a hole. The invention utilizes the tooth-shaped meshing of the half-shaft sleeve spline and the outer key plate to generate the anti-loosening effect on the adjusting nut, and has the advantages of safety, reliability, convenient adjustment and simple structure.

Description

Mining dumper hub

Technical Field

The invention relates to the field of mining dump trucks, in particular to a hub of a mining dump truck.

Background

The mining dump truck can generate large alternating loads to the hub bearing in the running process, and the hub bearing can transmit the alternating loads to the adjusting nut, so that the adjusting nut is gradually loosened to change the clearance of the hub bearing. A tapered roller bearing is generally adopted for mounting a rear wheel hub of a mining dump truck, the purpose of adjusting the clearance of the bearing is achieved by changing the pretightening force of an adjusting nut, and after adjustment is finished, anti-loosening treatment needs to be carried out on the adjusting nut, so that the influence on the service life of the bearing caused by the change of the clearance of the bearing after load is prevented.

The prior art mainly comprises conventional methods such as adding a gasket, a butting nut, a self-locking nut, a groove nut and a stop gasket, and the methods are not safe and reliable for adjusting the nut of the hub bearing.

Disclosure of Invention

1. Technical problem to be solved

The invention aims to provide a mining dump truck hub, which realizes the anti-loosening effect on an adjusting nut by utilizing the engagement formed by an external spline of a half-shaft sleeve and a bulge of an external key plate.

2. Technical scheme

A mining dump truck hub comprising: the hub, the hub bearing, the half-shaft sleeve, the adjusting nut, the outer key plate and the bolt with the hole; the hub bearing is arranged on the half-shaft sleeve, the hub is arranged on the hub bearing, the hub bearing is positioned between the half-shaft sleeve and the hub, and the adjusting nut is arranged on the external thread on the half-shaft sleeve through the internal thread and is attached to the outer end face of the hub bearing; the outer key plate is positioned on the outer side of the adjusting nut, the lower part of the outer key plate is inserted on the outer key of the semi-shaft sleeve, and the upper part of the outer key plate is fixed on the adjusting nut through a bolt with a hole.

Further, the outer wall of the half shaft sleeve is provided with an external spline, the outer wall of the half shaft sleeve inside the external spline is provided with an external thread, and the surface of the half shaft sleeve between the external spline and the external thread is provided with a curved surface.

Furthermore, the adjusting nut is provided with an internal thread, the outer end face is provided with a threaded hole in the circumferential direction, the threaded hole is matched with the through hole of the outer key plate, and the bolt with the hole penetrates through the through hole to be installed on the threaded hole to fix the outer key plate and the adjusting nut together.

Further, the number of screw holes is two, and the number of through-hole is two.

Furthermore, the upper end of the outer key plate is provided with a through hole, the lower end of the outer key plate is provided with a bulge, and the bulge is matched with the shape and the position of the outer spline.

Furthermore, the protrusions are in a sawtooth shape, and the side surfaces of the protrusions are trapezoidal inclined surfaces.

Furthermore, the shape of the locking steel wire is matched with the shape of the bolt with the hole, and two ends of the locking steel wire are inserted into the positioning holes of the bolt with the hole.

Furthermore, the positioning hole is arranged on a bolt cap of the bolt with the hole or on the end surface.

3. Advantageous effects

The invention utilizes the tooth-shaped meshing of the half-shaft sleeve spline and the outer key plate to generate the anti-loosening effect on the adjusting nut, and has the advantages of safety, reliability, convenient adjustment and simple structure.

According to the invention, the inner thread arranged on the adjusting nut corresponds to the outer thread on the half-shaft sleeve, the adjusting nut and the half-shaft sleeve can be connected together through the inner thread and the outer thread, the adjusting nut can be simply and conveniently installed on the surface of the half-shaft sleeve, and the connecting effect and the fixing effect are good due to the effect of threaded connection.

The invention is matched with a spline through the bulge arranged on the outer key plate, the side surface of the bulge is a trapezoidal inclined surface, the size and the position of the bulge correspond to the spline at the end part of the semi-shaft sleeve, the sawtooth-shaped bulge at the other end of the outer key plate is inserted into the outer spline on the semi-shaft sleeve, and the trapezoidal inclined surface on the outer key plate is contacted with the arc transition curved surface on the semi-shaft sleeve; when the adjusting nut tends to loosen during the running process of the vehicle, the toothed meshing between the sawtooth-shaped protrusions and the external splines can effectively prevent the adjusting nut from loosening.

According to the invention, the locking steel wire is matched with the bolt with the hole, the two bolts with the hole can be fixed through the locking steel wire, and the two bolts with the hole locked by the locking steel wire are the second important guarantee for preventing the adjusting nut from loosening.

Drawings

FIG. 1 is a schematic structural view of a mining dump truck hub in accordance with the present invention;

FIG. 2 is a schematic structural view of a half-axle bushing according to the present invention;

fig. 3 is a side view of the construction of the half shaft bushing of the present invention.

FIG. 4 is a schematic view of an adjusting nut according to the present invention;

FIG. 5 is a side view of the adjusting nut of the present invention;

FIG. 6 is a schematic structural view of an outer key plate according to the present invention;

fig. 7 is a structural side view of the outer key plate of the present invention.

Reference numerals: 1. a half-shaft sleeve; 11. a spline; 12. a curved surface; 13. an external thread; 2. a hub; 3. a hub bearing; 4. adjusting the nut; 41. an internal thread; 42. a threaded hole; 5. an outer keypad; 51. a through hole; 52. a protrusion; 53. a trapezoidal slope; 6. a bolt with a hole; 7. and (5) locking the steel wire.

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.

Fig. 1 is a schematic structural view of a mining dump truck hub according to the present invention.

A mining dump truck hub comprising: the axle comprises a half-axle sleeve 1, a hub 2, a hub bearing 3, an adjusting nut 4, an outer key plate 5, a bolt with a hole 6 and a locking steel wire 7.

The hub bearing 3 is arranged on the half-shaft sleeve 1, the hub 2 is arranged on the hub bearing 3, the hub bearing 3 is positioned between the half-shaft sleeve 1 and the hub 2, and the adjusting nut 4 is arranged on the external thread 13 on the half-shaft sleeve 1 through the internal thread 41 and is attached to the outer end face of the hub bearing 3; the outer key plate 5 is positioned on the outer side of the adjusting nut 4, the lower part of the outer key plate is inserted on the outer spline 11 of the semi-axis sleeve 1, and the upper part of the outer key plate 5 is fixed on the adjusting nut 4 through the bolt with a hole 6.

Fig. 2 is a schematic structural view of a half-axle sleeve 1 according to the present invention; fig. 3 shows a side view of the structure of the half shaft sleeve 1 of the present invention.

The outer wall of the semi-axis sleeve 1 is provided with an external spline 11, the outer wall of the semi-axis sleeve 1 inside the external spline 11 is provided with an external thread 13, and the surface of the semi-axis sleeve 1 between the external spline 11 and the external thread 13 is provided with a curved surface 12.

Fig. 4 is a schematic structural view of the adjusting nut 4 according to the present invention; fig. 5 is a side view showing the structure of the adjusting nut 4 according to the present invention.

The adjusting nut 4 is provided with an internal thread 41, the outer end face is provided with two threaded holes 42 in the circumferential direction, the number of the threaded holes 42 is two, the threaded holes 42 are matched with the through holes 51 of the outer key plate 5, and the perforated bolt 6 penetrates through the through holes 51 to be installed on the threaded holes 42 to fix the outer key plate 5 and the adjusting nut 4 together.

The internal thread 41 corresponds to the external thread 13 on the shaft bushing, and the adjusting nut 4 and the shaft bushing 1 can be connected together by means of the internal thread 41 and the external thread 13.

The shape of the locking steel wire 7 is matched with the bolt with holes 6, the two ends of the locking steel wire 7 are inserted into the positioning holes of the bolt with holes 6, and the two bolts with holes 6 can be fixed through the locking steel wire 7.

The positioning hole is arranged on the bolt cap of the bolt 6 with the hole or on the end face.

FIG. 6 is a schematic view of the structure of the outer key plate 5 of the present invention; fig. 7 is a side view showing the structure of the outer key plate 5 according to the present invention.

Two through holes 51 are formed in the upper end of the outer key plate 5, a protrusion 52 is arranged at the other end of the outer key plate 5, the protrusion 52 is in a sawtooth shape, the shape of the protrusion 52 is matched with that of the outer spline 11, the side face of the protrusion 52 is a trapezoidal inclined face 53, and the shape and the position of the protrusion 52 are matched with those of the outer spline 11 at the end of the half-shaft sleeve 1.

The working principle is as follows:

when the axle sleeve is used, after the play of the hub bearing 3 is adjusted by the extrusion of the adjusting nut 4, the through hole 51 on the outer key plate 5 is aligned with the threaded hole 42 on the adjusting nut 4, the outer key plate 5 is fixed on the adjusting nut 4 by the perforated bolt 6, the two perforated bolts 6 are locked by the locking steel wire 7, the sawtooth-shaped bulge 52 at the other end of the outer key plate 5 is inserted into the outer spline 11 on the axle sleeve 1, and the trapezoid inclined surface 53 on the outer key plate 5 is contacted with the arc transition curved surface 12 on the axle sleeve 1. When the adjusting nut 4 tends to loosen during the running process of the vehicle, the toothed meshing between the saw-toothed protrusions 52 and the external splines 11 can effectively prevent the adjusting nut 4 from loosening; two holed bolts 6, locked with a locking wire 7, are a second important safeguard against loosening of the adjusting nut 4.

It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that changes and modifications to the above embodiments are within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.

Claims

1. A mining dump truck hub comprising: wheel hub, wheel hub bearing, its characterized in that still includes: the semi-axis sleeve, the adjusting nut, the outer key plate and the bolt with the hole; the hub bearing is arranged on the half-shaft sleeve, the hub is arranged on the hub bearing, the hub bearing is positioned between the half-shaft sleeve and the hub, and the adjusting nut is arranged on the external thread on the half-shaft sleeve through the internal thread and is attached to the outer end face of the hub bearing; the outer key plate is positioned on the outer side of the adjusting nut, the lower part of the outer key plate is inserted on the outer key of the semi-shaft sleeve, and the upper part of the outer key plate is fixed on the adjusting nut through a bolt with a hole.

2. The mining dump truck hub of claim 1, wherein the outer wall of the axle sleeve is provided with external splines, the outer wall of the axle sleeve inboard of the external splines is provided with external threads, and the surface of the axle sleeve between the external splines and the external threads is provided with curved surfaces.

3. The mining dump truck hub of claim 1, wherein the adjusting nut is internally threaded, the outer end surface is circumferentially provided with a threaded hole that is adapted to the through hole of the outer key plate, and a bolt with a hole is installed through the through hole in the threaded hole to fix the outer key plate and the adjusting nut together.

4. The mining dump body hub of claim 3, wherein the number of threaded holes is two and the number of through holes is two.

5. The mining dump truck hub of claim 3, wherein the outer spline has a through hole at an upper end thereof, and the outer spline has a protrusion at a lower end thereof, the protrusion corresponding to the shape and position of the outer spline.

6. The mining dump body hub of claim 5, wherein the projections are saw-toothed and the sides of the projections are trapezoidal slopes.

7. The mining dump truck hub of claim 1, wherein the locking wire is shaped to fit the eyebolt, and wherein both ends of the locking wire are inserted into the positioning holes of the eyebolt.

8. The mining dump body hub of claim 1, wherein the locating hole is provided in a cap of the bolt with the hole or in the end face.