CN111457035B

CN111457035B - Split type shaft-mounted brake disc for railway vehicle

Info

Publication number: CN111457035B
Application number: CN202010375481.XA
Authority: CN
Inventors: 胡谦
Original assignee: NANJING ZHONGSHENG ROLLING STOCK COMPONENTS CO Ltd
Current assignee: NANJING ZHONGSHENG ROLLING STOCK COMPONENTS CO Ltd
Priority date: 2020-05-07
Filing date: 2020-05-07
Publication date: 2022-03-08
Anticipated expiration: 2040-05-07
Also published as: CN111457035A

Abstract

The invention belongs to the technical field of railway vehicle braking devices, and particularly relates to a split type shaft-mounted brake disc for a railway vehicle. The split type disc comprises two groups of split type disc bodies, a disc hub, a pressing ring and a fastener, wherein each split type disc body comprises two semicircular split type friction rings, an integral steel framework, a pressing block, a rivet and a sliding block; the split friction ring is riveted with the integral steel framework through a pressing block and a rivet; the integral steel framework is fixedly connected with the disk hub and the pressure ring through fasteners. According to the split type shaft-mounted brake disc, only the split type friction ring and the rivet which are worn to the limit need to be replaced in the later period, the integral steel framework, the disc hub, the compression ring and the bolt nut do not need to be disassembled and replaced, the integral steel framework, the disc hub, the compression ring and the bolt nut are connected together all the time and fixed on an axle, and the application and maintenance cost of the brake disc is greatly reduced.

Description

Split type shaft-mounted brake disc for railway vehicle

Technical Field

The invention belongs to the technical field of railway vehicle braking devices, and particularly relates to a split type shaft-mounted brake disc for a railway vehicle.

Background

Currently, there are two main types of shaft-mounted brake discs for rail vehicles: an integral shaft-mounted brake disc and a split shaft-mounted brake disc.

The integral shaft-mounted brake disc mainly comprises an integral disc body, a disc hub, a pressure ring and a fastener, when the integral brake disc is assembled, bolt holes in the integral disc body, the disc hub and the pressure ring are aligned, bolts sequentially penetrate through a pressure ring bolt through hole, a disc body bolt hole and a disc hub bolt through hole and are fixed through nuts, and finally the shaft-mounted brake disc is fixed on an axle in a press-fitting mode.

Split type axle dress brake disc lies in the disk body with integral axle dress brake disc difference, and the disk body of integral axle dress brake disc is complete, non-concatenation, and the disk body of split type axle dress brake disc is formed by the incomplete disk body concatenation of multi-disc, and in order to guarantee the reliability of concatenation, the incomplete disk body of above-mentioned multi-disc is connected through the bolt and the nut of big specification. When the split type brake disc is assembled, the split type disc body assembly formed by splicing, the disc hub and the bolt holes in the pressure ring are aligned and fixed by bolts and nuts.

No matter the existing integral shaft-mounted brake disc or the split shaft-mounted brake disc is adopted, when the disc body of the brake disc is abraded to the limit and needs to be replaced, the bolt and the nut must be firstly loosened, and then the disc body, the pressure ring and the disc hub are separated, so that the disc body can be replaced. According to the relevant regulations, the brake disc must be discarded completely once the bolts and nuts are loosened, and the reuse is not allowed. In fact, only the disc body is worn to the utmost extent and should be replaced, but due to the structural form of the existing shaft-mounted brake disc, once the disc body is replaced, the bolt and the nut must be replaced. This is clearly unreasonable and results in significant waste and increased operational maintenance costs for the brake disc.

Therefore, replacing only the disc worn to the limit without replacing the fasteners is a challenge to be addressed.

Disclosure of Invention

The invention aims to provide a split type shaft-mounted brake disc for a railway vehicle, which solves the problem that only a disc body with abrasion reaching the limit is replaced without replacing all parts.

In order to achieve the technical purpose, the invention adopts the following technical scheme: the split type shaft-mounted brake disc for the rail vehicle comprises two groups of split type disc body components, a disc hub, a pressing ring and a fastener, wherein the split type disc body components comprise two semicircular split type friction rings, an integral steel framework, a pressing block, a rivet and a sliding block;

the planes at the two sides of the split friction ring are a friction surface and a sliding groove surface respectively; the friction surface of the friction ring is uniformly distributed with an outer side pressing block groove and an inner side pressing block groove, and the sliding block groove surface of the friction ring is uniformly distributed with sliding block grooves of the friction ring;

framework sliding block holes are uniformly distributed on the two side planes of the integral steel framework, which are in contact with the split friction ring; the integral steel framework is also uniformly distributed with an outer side rivet hole group and an inner side rivet hole group;

the split friction ring is riveted with the integral steel framework through a pressing block and a rivet; the integral steel framework is fixedly connected with the disk hub and the pressure ring through fasteners.

Preferably, each set of the outer side rivet hole group or the inner side rivet hole group comprises 2 skeleton rivet through holes.

As a preferred technical scheme, the outer side pressure block grooves are uniformly distributed at intervals of 30 degrees; the inner side pressure block grooves and the friction ring sliding block grooves are uniformly distributed at intervals of 60 degrees, and the adjacent inner side pressure block grooves and the adjacent friction ring sliding block grooves are distributed at intervals of 30 degrees; the adjacent inner pressing block grooves and the outer pressing block grooves are arranged at an interval of 15 degrees.

As a preferable technical scheme, the inner pressing block groove comprises an inner complete pressing block groove and an inner partial pressing block groove, and the inner partial pressing block groove is positioned on two end faces of the split friction ring.

As a preferable technical scheme, the structures of the outer side pressing block groove and the inner side pressing block groove are completely the same and are in a T-shaped groove structure, and the friction ring sliding block groove is in a rectangular groove structure.

As a preferred technical scheme, the framework sliding block holes and the inner side rivet hole groups are uniformly distributed at intervals of 60 degrees, and the adjacent framework sliding block holes and the adjacent inner side rivet hole groups are distributed at intervals of 30 degrees; the outside rivet hole group is evenly arranged at intervals of 30 degrees and the adjacent outside rivet hole group and the inside rivet hole group are arranged at intervals of 15 degrees.

As a preferred technical scheme, 9 framework flange teeth are distributed on the integral steel framework and are uniformly distributed at intervals of 40 degrees; the thickness of the framework flange teeth is equal and is 30 mm-40 mm; each framework flange tooth is respectively provided with a framework bolt hole, and the framework bolt holes are uniformly distributed at intervals of 40 degrees;

the disc hub is distributed with 9 disc hub flange teeth which are uniformly distributed at intervals of 40 degrees; the thicknesses of the flange teeth of the disc hub are equal and are 20 mm-30 mm; each hub flange tooth is provided with a hub bolt through hole, and the hub bolt through holes are uniformly distributed at intervals of 40 degrees;

the pressure ring is distributed with 9 pressure ring bolt through holes which are uniformly distributed at intervals of 40 degrees; the diameter of the distribution circle of the pressure ring bolt through holes, the diameter of the distribution circle of the hub bolt through holes and the diameter of the distribution circle of the framework bolt holes are the same.

As the preferred technical scheme, the diameter of the distribution circle of the friction ring slider grooves is the same as that of the distribution circle of the framework slider holes.

According to the preferable technical scheme, the pressing block comprises a pressing block large end part, a pressing block small end part and a pressing block rivet through hole, the width of the pressing block large end part is 0.5-1.5 mm smaller than that of the pressing block groove large end part, and the height of the pressing block large end part is 5-7 mm smaller than that of the pressing block groove large end part; the width of the small end part of the pressing block is 0.5-1.0 mm smaller than that of the small end part of the pressing block groove, and the height of the small end part of the pressing block is the same as the depth of the small end part of the pressing block groove; the aperture of the through hole of the pressing block rivet is the same as that of the through hole of the framework rivet.

As a preferred technical scheme, the sliding block comprises a sliding block large end part and a sliding block small end part; the big end part of the sliding block is a solid cuboid, the width of the big end part of the sliding block is the same as that of the sliding block groove of the friction ring, the length of the big end part of the sliding block is smaller than that of the sliding block groove of the friction ring, and the height of the big end part of the sliding block is the same as the depth of the sliding block groove of the friction ring; the small end part of the sliding block is a solid cylindrical shaft, the shaft diameter is the same as the aperture of the framework sliding block hole, and the height of the small end part of the sliding block is 0.5-2.0 mm smaller than the depth of the framework sliding block hole.

Due to the adoption of the technical scheme, the invention has at least the following beneficial effects:

(1) according to the split type shaft-mounted brake disc for the railway vehicle, only the split type friction ring and the rivet which are worn to the limit are required to be replaced in the later period, the integral steel framework, the hub, the compression ring and the bolt nut are not required to be disassembled and replaced, the integral steel framework, the hub, the compression ring and the bolt nut are always connected together and fixed on an axle, and the application and maintenance cost of the brake disc is greatly reduced;

(2) the split friction ring is of a simple semicircular structure, does not have complex heat dissipation ribs, can adapt to production modes such as casting, forging and the like, greatly reduces risks caused by defects due to the simple structure, improves the qualification rate of products, and is beneficial to realizing industrialization;

(3) the split friction ring is fixed on the integral steel framework through the pressing block and the rivet, the integral steel framework is fixed on the axle through the existing mature disc hub, the pressing ring and the fastener structure, and the difficult problem that the split brake disc is fixed with the axle is solved.

Drawings

The drawings are only for purposes of illustrating and explaining the present invention and are not to be construed as limiting the scope of the present invention. Wherein:

FIG. 1 is a schematic view of an assembled structure of an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a split tray assembly according to an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view (enlarged) of A-A in FIG. 2;

FIG. 4 is a schematic cross-sectional view B-B of FIG. 2;

FIG. 5 is a schematic structural diagram of a split friction ring in an embodiment of the present invention;

FIG. 6 is a schematic cross-sectional view of C-C of FIG. 5;

FIG. 7 is a schematic cross-sectional view (enlarged) of D-D in FIG. 5;

FIG. 8 is a schematic structural view of an integral steel skeleton according to an embodiment of the present invention;

FIG. 9 is a schematic cross-sectional view of E-E in FIG. 8;

FIG. 10 is a schematic front view of a briquette according to an embodiment of the present invention;

FIG. 11 is a schematic top view of a compact according to an embodiment of the present invention;

FIG. 12 is a schematic front view of a slider according to an embodiment of the present invention;

FIG. 13 is a schematic top view of a slider according to an embodiment of the present invention;

FIG. 14 is a schematic structural view of a hub in an embodiment of the present invention;

fig. 15 is a schematic structural view of a pressure ring in an embodiment of the present invention.

Detailed Description

The invention is further illustrated below with reference to the figures and examples. In the following detailed description, certain exemplary embodiments of the present invention are described by way of illustration only. Needless to say, a person skilled in the art realizes that the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

Examples

Referring to fig. 1, the split type shaft-mounted brake disc for the railway vehicle comprises a two-component split type disc body assembly 1, a disc hub 2, a pressure ring 3, a bolt 4 and a nut 5, wherein the split type disc body assembly 1, the disc hub 2 and the pressure ring 3 are connected together through the bolt 4 and the nut 5.

Referring to fig. 2 to 4, the split-type disc assembly 1 includes two semicircular split-type friction rings 11, an integral steel skeleton 12, a pressing block 13, a rivet 14, and a sliding block 15.

Referring to fig. 5 to 7, the two side planes of the split friction ring 11 are a friction surface 111 and a sliding groove surface 112, respectively, and 6 outer pressing block grooves 113 and 4 inner pressing block grooves 114 are uniformly distributed on the friction surface 111; the outer pressing block groove 113 and the inner pressing block groove 114 are completely the same in structure and are of a T-shaped groove structure, and the T-shaped groove is divided into a large end part 115 and a small end part 116; according to the completeness of the inner side pressure block grooves 114, 4 inner side pressure block grooves 114 are divided into 2 inner side completeness

pressure block grooves

117 and 2 inner side partial pressure block grooves 118; 3 friction ring slide block slots 119 are uniformly distributed on the slide slot surface 112, and the friction ring slide block slots 119 are in a rectangular slot structure; the outer side pressure block grooves 113 are uniformly distributed at intervals of 30 degrees; the inner side pressing block slots 114 and the friction ring slider slots 119 are uniformly arranged at intervals of 60 degrees, and the adjacent inner side pressing block slots 114 and the adjacent friction ring slider slots 119 are arranged at intervals of 30 degrees; the adjacent inner pressing block grooves 114 and the outer pressing block grooves 113 are arranged at an interval of 15 degrees; the inner partial pressure block grooves 118 are located on both end faces of the split friction ring 11.

Referring to fig. 8 and 9, the flat surfaces (contact surfaces 121) on both sides of the integral steel skeleton 12 are in contact with the chute surfaces 112; 6 framework sliding block holes 122 are uniformly distributed on the

contact surface

121, and 12 groups of outer rivet hole groups 123 and 6 groups of inner rivet hole groups 124 are also uniformly distributed on the contact surface 121; each set of outer and inner

rivet hole sets

123, 124 includes 2 skeleton rivet through holes 125, respectively; the framework sliding block holes 122 and the inner side rivet hole groups 124 are uniformly distributed at intervals of 60 degrees, and the adjacent framework sliding block holes 122 and the inner side rivet hole groups 124 are distributed at intervals of 30 degrees; the outer side rivet hole groups 123 are uniformly arranged at intervals of 30 degrees, and the adjacent outer side rivet hole groups 123 and inner side rivet hole groups 124 are arranged at intervals of 15 degrees; the integral steel framework 12 is also uniformly distributed with 9 framework flange teeth 126, and the framework flange teeth 126 are uniformly distributed at intervals of 40 degrees; the thickness of each framework flange tooth 126 is equal and is 30 mm-40 mm; each framework flange tooth 126 is provided with framework bolt through holes 127, and the framework bolt through holes 127 are uniformly distributed at intervals of 40 degrees; the diameter of the friction ring slider groove distribution circle 1111 is the same as the diameter of the skeleton slider hole distribution circle 129.

Referring to fig. 10 and 11, the pressing block 13 includes a pressing block large end portion 131, a pressing block

small end portion

132, and 2 pressing block rivet through holes 133; the briquetting large end part 131 is in contact with the briquetting groove contact surface 1110, and the briquetting small end part 132 is in contact with the contact surface 121; the width of the big end part 131 of the pressing block is 0.5-1.5 mm smaller than that of the big end part 115 of the T-shaped groove, and the height of the big end part 131 of the pressing block is 5-7 mm smaller than that of the big end part 115 of the T-shaped groove; the width of the small pressing block end part 132 is 0.5-1.0 mm smaller than that of the small T-shaped groove end part 116, and the height of the small pressing block end part 132 is the same as the depth of the small T-shaped groove end part 116; the diameter of the press rivet through hole 133 is the same as the diameter of the skeleton rivet through hole 125.

The rivet 14 sequentially penetrates through the pressing block rivet through hole 133 and the framework rivet through hole 125 to rivet the pressing block 13, the split friction ring 11 and the integral steel framework 12 together, and the diameter of the rivet 14 is 0.5-1.5 mm smaller than the diameter of the pressing block rivet through hole 133 and the diameter of the framework rivet through hole 125.

Referring to fig. 12 and 13, the slider 15 includes a slider large end 151 and a slider small end 152; the large end part 151 of the slide block is a solid cuboid, the width of the large end part 151 of the slide block is the same as that of the slide block groove 119 of the friction ring, the length of the large end part 151 of the slide block is smaller than that of the slide block groove 119 of the friction ring, and the height of the large end part 151 of the slide block is the same as that of the slide block groove 119 of the friction ring; the small end part 152 of the sliding block is a solid cylindrical shaft, the shaft diameter is the same as the aperture of the framework sliding block hole 122, and the height of the small end part 152 of the sliding block is 0.5-2.0 mm smaller than the depth of the framework sliding block hole 122.

Referring to fig. 14, 9 hub flange teeth 21 are uniformly distributed on the hub 2 and uniformly arranged at intervals of 40 °; each hub flange tooth 21 is equal in thickness and 20-30 mm in thickness, and is provided with hub bolt through holes 22, and the hub bolt through holes 22 are uniformly distributed at intervals of 40 degrees.

Referring to fig. 15, 9 press ring bolt through holes 31 are uniformly distributed on the press ring 3 and uniformly arranged at an interval of 40 °; the diameter of the pressure ring bolt through hole distribution circle 32, the diameter of the hub bolt through hole distribution circle 23 and the diameter of the framework bolt through hole distribution circle 128 are the same.

When assembling the brake disc, firstly, the split disc body assembly 1 needs to be assembled, and the small end part 152 of the sliding block is inserted into the framework sliding block hole 122; then, the four friction rings 11 are sequentially placed on the integral steel framework 12, and the large end part 151 of the sliding block is ensured to be inserted into the sliding block groove 119 of the friction ring; inserting the pressing block 13 into the outer pressing block groove 113 and the inner pressing block groove 114 to ensure that the pressing block large end part 131 is in contact with the pressing block groove contact surface 1110 and the pressing block small end part 132 is in contact with the contact surface 121; finally, the rivet 14 sequentially penetrates through the pressing block rivet through hole 133 and the framework rivet through hole 125, and the pressing block 13, the split friction ring 11 and the integral steel framework 12 are riveted together.

And finally, the installed split type disc body assembly 1 is fixedly connected with the disc hub 2 and the pressure ring 3. Firstly, aligning the framework bolt through hole 127, the hub bolt through hole 22 and the pressure ring bolt through hole 31, and then sequentially penetrating the bolt 4 into the hub bolt through hole 22, the framework bolt through hole 127 and the pressure ring bolt through hole 31 and fixing the bolts by using the nut 5.

The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention. Any equivalent changes and modifications that can be made by one skilled in the art without departing from the spirit and principles of the invention shall fall within the protection scope of the invention.

Claims

1. Split type axle dress brake disc for rail vehicle constitutes, dish hub, clamping ring and fastener including two sets of split type disk bodies, its characterized in that: the split type disc body comprises two semicircular split type friction rings, an integral steel framework, a pressing block, a rivet and a sliding block;

the split friction ring is riveted with the integral steel framework through a pressing block and a rivet; the integral steel framework is fixedly connected with the disk hub and the pressure ring through fasteners;

the sliding block comprises a sliding block large end part and a sliding block small end part; the big end part of the sliding block is a solid cuboid, the width of the big end part of the sliding block is the same as that of the sliding block groove of the friction ring, the length of the big end part of the sliding block is smaller than that of the sliding block groove of the friction ring, and the height of the big end part of the sliding block is the same as the depth of the sliding block groove of the friction ring; the small end part of the sliding block is a solid cylindrical shaft, the shaft diameter is the same as the aperture of the framework sliding block hole, and the height of the small end part of the sliding block is 0.5-2.0 mm smaller than the depth of the framework sliding block hole.

2. The split shaft-mounted brake disc for a railway vehicle according to claim 1, wherein: each group of the outer side rivet hole group or the inner side rivet hole group comprises 2 skeleton rivet through holes.

3. The split shaft-mounted brake disc for a railway vehicle according to claim 2, wherein the outer side pad grooves are uniformly arranged at intervals of 30 °; the inner side pressure block grooves and the friction ring sliding block grooves are uniformly distributed at intervals of 60 degrees, and the adjacent inner side pressure block grooves and the adjacent friction ring sliding block grooves are distributed at intervals of 30 degrees; the adjacent inner pressing block grooves and the outer pressing block grooves are arranged at an interval of 15 degrees.

4. The split shaft-mounted brake disc for a railway vehicle according to claim 3, wherein the inner pad grooves comprise inner full pad grooves and inner partial pad grooves, and the inner partial pad grooves are located on both end surfaces of the split friction ring.

5. The split shaft-mounted brake disc for a railway vehicle according to claim 3, wherein: the outer side pressing block groove and the inner side pressing block groove are identical in structure and are of T-shaped groove structures, and the friction ring sliding block groove is of a rectangular groove structure.

6. The split shaft-mounted brake disc for a railway vehicle according to claim 2, wherein: the framework sliding block holes and the inner side rivet hole groups are uniformly distributed at intervals of 60 degrees, and the adjacent framework sliding block holes and the inner side rivet hole groups are distributed at intervals of 30 degrees; the outside rivet hole group is evenly arranged at intervals of 30 degrees and the adjacent outside rivet hole group and the inside rivet hole group are arranged at intervals of 15 degrees.

7. The split shaft-mounted brake disc for a railway vehicle according to claim 2, wherein: 9 framework flange teeth are distributed on the integral steel framework, and the framework flange teeth are uniformly distributed at intervals of 40 degrees; the thickness of the framework flange teeth is equal and is 30 mm-40 mm; each framework flange tooth is respectively provided with a framework bolt hole, and the framework bolt holes are uniformly distributed at intervals of 40 degrees;

8. The split shaft-mounted brake disc for a railway vehicle according to claim 7, wherein the diameter of the friction ring slider groove distribution circle is the same as the diameter of the skeleton slider hole distribution circle.

9. The split shaft-mounted brake disc for a railway vehicle according to claim 1, wherein: the pressing block comprises a pressing block large end part, a pressing block small end part and a pressing block rivet through hole, the width of the pressing block large end part is 0.5-1.5 mm smaller than that of the pressing block groove large end part, and the height of the pressing block large end part is 5-7 mm smaller than that of the pressing block groove large end part; the width of the small end part of the pressing block is 0.5-1.0 mm smaller than that of the small end part of the pressing block groove, and the height of the small end part of the pressing block is the same as the depth of the small end part of the pressing block groove; the aperture of the through hole of the pressing block rivet is the same as that of the through hole of the framework rivet.