CN107448518B - Scratch-resistant railway vehicle brake disc - Google Patents
Scratch-resistant railway vehicle brake disc Download PDFInfo
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- CN107448518B CN107448518B CN201710799682.0A CN201710799682A CN107448518B CN 107448518 B CN107448518 B CN 107448518B CN 201710799682 A CN201710799682 A CN 201710799682A CN 107448518 B CN107448518 B CN 107448518B
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- friction ring
- brake disc
- holes
- resistant railway
- scratch resistant
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/12—Discs; Drums for disc brakes
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a scratch-resistant railway vehicle brake disc, which comprises an inner friction ring and an outer friction ring, wherein the inner friction ring and the outer friction ring are respectively positioned at the inner side and the outer side of a wheel spoke plate, a plurality of inner mounting holes are formed in the inner friction ring, outer mounting holes which are in one-to-one correspondence with the inner mounting holes are formed in the outer friction ring, bolts penetrate through the corresponding inner mounting holes and the corresponding outer mounting holes, and the inner friction ring and the outer friction ring are in fastening connection through the bolts and nuts; and one or more chip removal holes are formed in the annular surface of the inner friction ring and/or the annular surface of the outer friction ring, and the chip removal holes are used for removing metal mosaic particles bonded in the brake pad braking process. The scratch-resistant railway vehicle brake disc is provided with the chip removal holes on the disc surface, so that inlays on the brake pads are removed in the braking process, and the damage of metal inlays to the brake disc and the brake pads is avoided.
Description
Technical Field
The invention relates to the field of braking equipment, in particular to a scratch-resistant railway vehicle brake disc.
Background
The friction surface of the existing railway brake disc is an integral smooth surface except for the self-fastening requirement, and after the brake pad is inlaid with metal, the inlaid objects are difficult to clean by the brake disc, so that the brake disc is seriously scratched and even scrapped. Meanwhile, the gate sheets are damaged or even scrapped due to the large amount of embedded accumulation.
Therefore, it is desirable to develop a brake disc that overcomes the metal inlay, prevents the brake disc from being scratched, and prolongs the service life of the brake pad.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a scratch-resistant railway vehicle brake disc, which can effectively solve the problem of metal mosaic and prevent the damage of the brake disc and brake pads when bearing the same braking force, and the technical scheme is as follows:
the invention provides a scratch-resistant railway vehicle brake disc, which comprises an inner friction ring and an outer friction ring, wherein the inner friction ring and the outer friction ring are respectively positioned at the inner side and the outer side of a wheel spoke plate, a plurality of inner mounting holes are formed in the inner friction ring, outer mounting holes which are in one-to-one correspondence with the inner mounting holes are formed in the outer friction ring, bolts penetrate through the corresponding inner mounting holes and the corresponding outer mounting holes, and the inner friction ring and the outer friction ring are in fastening connection through the bolts and nuts;
and one or more chip removal holes are formed in the annular surface of the inner friction ring and/or the annular surface of the outer friction ring, and the chip removal holes are used for removing metal mosaic particles bonded in the brake pad braking process.
Further, the chip removal holes are in a cylindrical hole structure.
Further, the chip removal holes are of an expansion structure in the direction from the outer side to the inner side of the inner friction ring or the outer friction ring.
Further, guide threads are arranged on the inner wall of the chip removal hole.
Further, the sizes of the chip removal holes are equal, and the pore diameter value is obtained by the following formula:
Further, the annular surfaces of the inner friction ring and the outer friction ring are respectively provided with a plurality of chip removal holes, and the aperture of the chip removal holes close to the edge of the inner ring is smaller than that of the chip removal holes close to the edge of the outer ring.
Further, the chip removal holes penetrate through the thickness direction of the inner friction ring or the outer friction ring, or the chip removal holes are of a hole groove structure which is recessed inwards on the outer side surface of the inner friction ring and/or the outer friction ring.
Further, the chip removal holes are round or oval.
Further, the inner friction ring and the outer friction ring are made of alloy materials, wherein the alloy materials comprise steel, iron, aluminum, ceramics, carbon fibers and other alloy materials, and the other alloy materials comprise aluminum alloy and titanium alloy.
Further, the scratch resistant railway vehicle brake disc also includes fasteners for mounting the brake disc to the vehicle.
The technical scheme provided by the invention has the following beneficial effects:
1) Reducing the risk of product metal mosaic;
2) The damage of the brake disc and the brake pad due to metal mosaic accumulation is reduced;
3) The normal running time of the railway vehicle is improved, and the failure rate of the vehicle is reduced;
4) And the maintenance cost of the vehicle is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic perspective view of a scratch resistant railway vehicle brake disc provided by an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a scratch resistant railway vehicle brake disc provided by an embodiment of the present invention;
FIG. 3 is a top plan view of a first construction of a scratch resistant railway vehicle brake disc provided in accordance with an embodiment of the present invention;
FIG. 4 is a second structural plan view of a scratch resistant railway vehicle brake disc provided in accordance with an embodiment of the present invention;
fig. 5 is a partial cross-sectional view of a brake disc provided by an embodiment of the present invention.
Wherein, the reference numerals include: 1-outer friction ring, 11-outer mounting hole, 2-inner friction ring, 21-inner mounting hole and 3-chip removal hole.
Detailed Description
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, apparatus, article, or device that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or device.
Examples
In one embodiment of the invention, referring to fig. 1 and 2, there is provided a scratch-resistant railway vehicle brake disc, the brake disc comprises an inner friction ring 2, an outer friction ring 1 and a fastener for fixedly mounting the brake disc on a vehicle, the inner friction ring 2 and the outer friction ring 1 are respectively positioned at the inner side and the outer side of a wheel web, the inner friction ring 2 and the outer friction ring 1 are concentrically arranged, a plurality of inner mounting holes 21 are arranged on the inner friction ring 2, a plurality of outer mounting holes 11 which are in one-to-one correspondence with the inner mounting holes 21 are arranged on the outer friction ring 1, bolts penetrate between the corresponding inner mounting holes 21 and the outer mounting holes 11, the inner friction ring and the outer friction ring are in fastening connection through the bolts and nuts, the fastener is a fixing part formed by protruding at the central holes of the outer friction ring 1 and the inner friction ring 2, and a plurality of fixing holes are arranged on the fixing part;
the annular surface of the inner friction ring 2 and/or the outer friction ring 1 is provided with one or more chip removing holes 3, and the chip removing holes 3 are used for removing metal mosaic particles bonded in the brake pad braking process, and the specific process is as follows: under the high-speed state, friction occurs between the brake pad and the brake disc, and metal scraps arrive at the chip removal hole 3 along with the movement process of the brake pad, and the metal scraps can be discharged from the chip removal hole 3, so that the metal scraps and the brake pad are prevented from being adhered to form metal inlays.
In one embodiment of the invention, the outer friction ring 1 and the inner friction ring 2 are provided with a plurality of chip removing holes 3 on the annular surface, and in another embodiment of the invention, the chip removing holes are arranged on the annular surface of the outer friction ring 1 or the inner friction ring 2.
In order to accelerate the chip removal of the metal chips, the chip removal holes 3 are in an expanding structure in the direction from the outer side to the inner side (namely, the chip removal direction) of the outer friction ring 1 or the inner friction ring 2, as shown in fig. 5, since the hole diameter of the metal chips in the chip removal direction of the chip removal holes 3 is enlarged, preferably, guide threads are arranged on the inner wall of the chip removal holes 3, and inertia force drives the metal chips to be discharged out of the brake disc more quickly; in another embodiment, the chip removing holes 3 are in a cylindrical hole structure, and the cylindrical hole structure can ensure that metal chips cannot be extruded into the brake pad.
In one embodiment of the present invention, the sizes of the apertures of the chip removing holes 3 are equal, referring to fig. 3, after a limited number of experiments, the following aperture calculation formula of the chip removing holes 3 is obtained according to the experimental data:
In another embodiment of the present invention, the sizes of the chip removing holes 3 are different, referring to fig. 4, the outer friction ring and the inner friction ring are provided with a plurality of chip removing holes, and the hole diameter of the chip removing hole near the edge of the inner ring is smaller than the hole diameter of the chip removing hole near the edge of the outer ring.
In one embodiment of the invention, the chip ejection holes penetrate through the thickness direction of the inner friction ring or the outer friction ring; in another embodiment of the present invention, the chip removing holes are hole groove structures (non-penetrating structures) recessed inward on the outer side surfaces of the inner friction ring and/or the outer friction ring.
In a preferred embodiment of the present invention, the outer friction ring 1 and the inner friction ring 2 are made of the same alloy material including various steel, iron, aluminum, ceramics, carbon fiber and other alloy materials such as aluminum alloy, titanium alloy, and in another embodiment, the outer friction ring 1 and the inner friction ring 2 may be made of different materials.
In a preferred embodiment of the present invention, the chip ejection hole 3 is circular or elliptical, and in other embodiments, the chip ejection hole 3 may be other shapes, and the specific shape of the chip ejection hole 3 is not limited in the present invention.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (10)
1. The scratch-resistant railway vehicle brake disc is characterized by comprising an inner friction ring and an outer friction ring, wherein the inner friction ring and the outer friction ring are respectively positioned at the inner side and the outer side of a wheel spoke plate, a plurality of inner mounting holes are formed in the inner friction ring, outer mounting holes which are in one-to-one correspondence with the inner mounting holes are formed in the outer friction ring, bolts penetrate through the corresponding inner mounting holes and the corresponding outer mounting holes, and the inner friction ring and the outer friction ring are in fastening connection through the bolts and nuts;
and one or more chip removal holes are formed in the annular surface of the inner friction ring and/or the annular surface of the outer friction ring, and the chip removal holes are used for removing metal mosaic particles bonded in the brake pad braking process.
2. A scratch resistant railway car brake disc as claimed in claim 1, wherein the clearance holes are of cylindrical hole configuration.
3. A scratch resistant railway car brake disc as claimed in claim 1, wherein the clearance holes are of an expanded configuration in an outboard-to-inboard direction of the inner or outer friction ring.
4. A scratch resistant railway car brake disc as claimed in claim 1, wherein the clearance hole is provided with guide threads on an inner wall thereof.
5. The scratch resistant railway car brake disc of claim 1, wherein the clearance holes have an equal pore size, the pore size value being obtained by the following formula:
6. The scratch resistant railway car brake disc of claim 1, wherein the inner friction ring and the outer friction ring are each provided with a plurality of clearance holes in the annulus, and the clearance hole aperture near the inner ring edge is smaller than the clearance hole aperture near the outer ring edge.
7. A scratch resistant railway car brake disc as claimed in claim 1, wherein the clearance holes extend through the thickness of the inner friction ring or the outer friction ring, or the clearance holes are of an inwardly recessed hole groove structure on the outer side of the inner friction ring and/or the outer friction ring.
8. A scratch resistant railway car brake disc as claimed in claim 1, wherein the clearance holes are circular or oval.
9. A scratch resistant railway car brake disc according to claim 1, wherein the inner and outer friction rings are made of an alloy material comprising steel, iron, aluminum, ceramic, carbon fiber and other alloy materials including aluminum alloys and titanium alloys.
10. A scratch resistant railway vehicle brake disc as claimed in any one of claims 1 to 9, further comprising fasteners for mounting the brake disc to a vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710799682.0A CN107448518B (en) | 2017-09-07 | 2017-09-07 | Scratch-resistant railway vehicle brake disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710799682.0A CN107448518B (en) | 2017-09-07 | 2017-09-07 | Scratch-resistant railway vehicle brake disc |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107448518A CN107448518A (en) | 2017-12-08 |
| CN107448518B true CN107448518B (en) | 2023-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710799682.0A Active CN107448518B (en) | 2017-09-07 | 2017-09-07 | Scratch-resistant railway vehicle brake disc |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2034833B (en) * | 1978-10-16 | 1982-10-20 | Lucas Industries Ltd | Disc brakes |
| DE3114995A1 (en) * | 1981-04-14 | 1982-11-11 | Knorr-Bremse GmbH, 8000 München | WHEEL BRAKE DISC FOR RAIL VEHICLES |
| DE3627176A1 (en) * | 1986-08-11 | 1988-02-18 | Bergische Stahlindustrie | WHEEL BRAKE DISC FOR RAIL VEHICLES |
| JP2001003152A (en) * | 1999-06-22 | 2001-01-09 | Hitachi Metals Ltd | Brake disk for railway vehicle |
| CN201335114Y (en) * | 2008-12-09 | 2009-10-28 | 北京纵横机电技术开发公司 | Brake disc device installed on wheel |
| CN207161577U (en) * | 2017-09-07 | 2018-03-30 | 克诺尔车辆设备(苏州)有限公司 | A kind of scratch resistant railway vehicle brake disc |
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2017
- 2017-09-07 CN CN201710799682.0A patent/CN107448518B/en active Active
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| CN107448518A (en) | 2017-12-08 |
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