Wheel hub and engineering truck
Technical field
The present invention relates to engineering machinery field, particularly a kind of wheel hub and engineering truck.
Background technology
Wheel hub is one of major part of running car system, is a kind ofly to require higher security personnel's part, and rideability and the safety of it and automobile have very large relation.In order to ensure safety, not only requiring that automotive hub has rational structure, also requiring that wheel hub has higher intensity, good thermal diffusivity and lubricity.Existing engineering truck is in the process travelled, if hub bearing lubricates bad, whole end assembly of taking turns can produce a large amount of heats, these heats will make bearing and wheel hub burn out, and reduce the usefulness of brake system from face, produce potential safety hazard, and existing wheel hub or can only plate disc brake be installed, can only install drum brake mechanism, commonality is poor, causes cost to increase.
Summary of the invention
In view of this, the present invention is intended to propose a kind of wheel hub and engineering truck, to strengthen the lubricant effect of hub bearing.
For achieving the above object, technical scheme of the present invention is achieved in that
On the one hand, the invention provides a kind of wheel hub, include the axle bearing mount portion of wheel mounting portion and tubular, this axle bearing mount portion is provided with centre hole, outer bearing position is provided with near one end of wheel mounting portion at this centre hole, neck bearing position is provided with at the other end of this centre hole, the oil groove for holding grease is provided with between described outer bearing position and neck bearing position, described oil groove is the annular groove-shaped structure be made up of the twice flange be arranged in described centre hole, described twice flange is respectively the first flange near described outer bearing position and the second flange near described neck bearing position, described first flange is the conical surface near the side of described outer bearing position and described second flange near the side of described neck bearing position.
Further, the angle of the axis of the described conical surface and described centre hole is more than or equal to 20 ° and is less than or equal to 75 °.
Further, the cylindrical of described axle bearing mount portion is provided with the shaft shoulder for assembling plate disc brake and flange face, and described flange face is provided with the bolt hole for installing plate disc brake.
Further, the outer rim of described wheel mounting portion is provided with the bolt hole for installing drum brake mechanism.
Further, described first flange and/or described second flange are provided with the open slot for being communicated with described oil groove and the described conical surface.
Further, the cylindrical of described axle bearing mount portion is provided with the outer reinforced rib axially arranged along it.
Further, the inner edge of described wheel mounting portion is provided with along reinforced rib in described axle bearing mount portion axially setting.
On the other hand, the invention provides a kind of engineering truck, the vehicle bridge of this project car is provided with above-mentioned wheel hub.
Relative to prior art, the present invention has following advantage:
The conical surface for lubricating is provided with in the centre hole of 1, wheel hub of the present invention, when hub rotation, this conical surface can produce the centnifugal force pointing to hub outside surface, centnifugal force makes the material of the grease on the conical surface move along the conical surface along the tangential component in conical surface direction, and then flow in the bearing of this conical surface, greatly strengthen the lubricant effect to hub bearing, solve conventional boss bearing lubrication poor, the problem of bearing and wheel hub easy burn-out.
2, wheel hub of the present invention is provided with the shaft shoulder with installing plate disc brake, and make it both can mate plate disc brake, also can mate drum brake mechanism, commonality is strengthened greatly.
3, wheel hub of the present invention adopts the arrangement of inside and outside reinforced rib, adds the intensity of wheel hub, alleviates the weight of wheel hub, make hub weight reduce about 6% than before, also makes the thermal diffusivity of wheel hub be improved simultaneously.
4, wheel hub structure of the present invention simple, be easy to batch manufacturing, highly versatile, there is good economic benefit.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the cross-sectional schematic of wheel hub described in the embodiment of the present invention;
Fig. 2 is the schematic perspective view of wheel hub described in the embodiment of the present invention;
Fig. 3 is the right elevation of wheel hub described in the embodiment of the present invention;
Fig. 4 is the left view of wheel hub described in the embodiment of the present invention;
The stressed schematic diagram of the grease that Fig. 5 is wheel hub described in the embodiment of the present invention.
Description of reference numerals:
1-outer bearing position, 2-neck bearing position, 3-oil groove, 4-first flange, 5-second flange, the 6-conical surface, 7-open slot, the outer reinforced rib of 8-, the 9-shaft shoulder, 10-king bolt hole, 11-stove bolt hole, 12-axle bearing mount portion, 13-wheel mounting portion, 14-centre hole, reinforced rib in 15-, 16-flange face.
Detailed description of the invention
It should be noted that, when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
Fig. 1 to Fig. 4 is the relevant drawings of the embodiment of the present invention, as shown in FIG., wheel hub described in the present embodiment includes the wheel mounting portion 13 of Flange-shaped Parts and the axle bearing mount portion 12 of tubular, this axle bearing mount portion 12 is provided with centre hole 14, outer bearing position 1 is provided with near one end of wheel mounting portion 13 at this centre hole 14, neck bearing position 2 is provided with at the other end of this centre hole 14, the oil groove 3 for holding grease is provided with outside between bearing position 1 and neck bearing position 2, this oil groove 3 is the annular groove-shaped structure be made up of the twice flange be arranged in centre hole 14, described twice flange is respectively the first flange 4 near outer bearing position 1 and the second flange 5 near neck bearing position 2, this first flange 4 is the conical surface 6 near the side of outer bearing position 1 and the second flange 5 near the side of described neck bearing position 2, and the open slot 7 be equipped with on the first flange 4 with the second flange 5 for being communicated with oil groove 3 and the conical surface 6, so that the grease flow in oil groove 3 is on this conical surface 6, and then flow in the bearing of this conical surface 6.The large I of oil groove 3 is determined according to the volume of the grease that will store, and the quantity of open slot 7 can be arranged as required, and be traditionally arranged to be two, four, six etc., the open slot 7 in the present embodiment is provided with four.The conical surface 6 can be determined as required with the angle of the axis of centre hole 14, generally desirable 20 degree, 30 degree, 45 degree, 60 degree, 75 degree etc., particularly, in the present embodiment, the conical surface 6 of the first flange 4 and the second flange 5 is respectively 30 degree and 60 degree with the angle of the axis of centre hole 14.The cylindrical of axle bearing mount portion 12 is provided with the shaft shoulder 9 for assembling plate disc brake and flange face 16, this flange face 16 is provided with the stove bolt hole 11 for installing plate disc brake, being provided with the king bolt hole 10 for installing drum brake mechanism in the outer rim of wheel mounting portion 13, the commonality of wheel hub can be made so greatly to strengthen.The cylindrical of axle bearing mount portion 12 is provided with the outer reinforced rib 8 axially arranged along it, be provided with in the inner edge of wheel mounting portion 13 along reinforced rib 15 in described axle bearing mount portion 12 axially setting, this interior reinforced rib 15 and outer reinforced rib 8 not only can make the intensity of wheel hub increase, also the face area of wheel hub can be increased, be conducive to the heat dispersion strengthening wheel hub, owing to employing inside and outside reinforced rib 8 arrangement, therefore can reduce the weight of wheel hub, loss of weight about 6% compared with traditional wheel hub.Particularly, the quantity of interior reinforced rib 15 and outer reinforced rib 8 can design as required, the quantity of the interior reinforced rib 15 of this enforcement is 12, the quantity of outer reinforced rib 8 is six, the position that interior reinforced rib 15 is arranged is positioned at outside outer bearing position 1, and outer reinforced rib 8 is arranged in the position of corresponding oil groove 3 on axle bearing mount portion 12 cylindrical, the shape of interior reinforced rib 15 and outer reinforced rib 8 should make wheel hub uniform wall thickness and rounding off as far as possible.
The stressed schematic diagram of the grease that Fig. 5 is wheel hub described in the present embodiment, as shown in FIG., when wheel hub moves, the centnifugal force Fr pointing to hub outside surface is produced at the conical surface 6, wherein from hub centre more away from place, its centnifugal force is larger, because grease is attached on the lubrication conical surface 6, therefore grease particle also produces corresponding centnifugal force Fr, this centnifugal force is far longer than the gravity G of a grease material, Gu gravity can be ignored, centnifugal force Fr can be analyzed to along the tangential force Ft in the conical surface 6 direction and the normal force Fn perpendicular to the conical surface 6 direction, tangential force Ft along the conical surface 6 direction makes a grease material move along the conical surface 6, thus the grease particle on the conical surface 6 is brought in bearing, thus make bearing sufficient lubrication, bearing and wheel hub is avoided to be burned, extend the service life of bearing and wheel hub.
Except above-mentioned wheel hub, the present invention also provides a kind of engineering truck, and the wheel of this project car is provided with above-mentioned wheel hub, and the structural reference prior art of other each several part of this project car, repeats no more herein.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.