Aluminum alloy brake disc core and brake disc manufactured by same

Abstract

The utility model relates to the technical field of brake discs, in particular to an aluminum alloy brake disc core and a brake disc made of the aluminum alloy brake disc core. An aluminum gasket; an iron pin; according to the mode that the through holes are aligned with the array perforated aluminum gaskets, the perforated aluminum rings, the array perforated aluminum gaskets, the perforated aluminum rings,... the array perforated aluminum gaskets and the perforated aluminum rings are alternately stacked layer by layer to form an assembly part, iron pins are pressed into the through holes and the array perforated aluminum gaskets, and the through holes and the array perforated aluminum gaskets are riveted and brazed into a whole. The multi-layer air channel composite brake disc is characterized in that the aluminum rings with holes and the array aluminum gaskets with holes are overlapped layer by layer, the aluminum alloy brake disc core is obtained, and the two sides of the aluminum alloy brake disc core are connected with the brake iron rings and the iron rings with the flanges in a composite mode respectively to form the multi-layer air channel composite brake disc. The multi-layer air duct greatly increases the contact area between the vehicle and the air flow during operation, so that rapid heat dissipation is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of brake disc technology, specifically to an aluminum alloy brake disc core and a brake disc made therefrom. Background Technology

[0002] For a long time, vehicles have used cast iron brake discs. To improve cooling efficiency, cast iron brake discs often adopt duct-type brake discs, which introduce convective heat transfer on the basis of heat conduction heat dissipation.

[0003] Due to limitations imposed by the cast iron material and casting process, the air duct design of this type of air duct brake disc is limited to a simple single-row design, with the air duct positioned at the center of the brake disc. The braking process of the brake disc involves converting kinetic energy into heat energy in a short time. For forced braking, i.e., rapid stopping from high speed, the low thermal conductivity of cast iron (39.2 W / m·K) often results in the temperature of the two disc surfaces (friction surfaces) being more than 100°C higher than the temperature of the brake disc center (air duct center). The excessively high temperature of the disc surfaces will cause thermal fade of the brake disc, reduce braking performance, and cause the brake pads (phenolic resin) to degrade and wear rapidly.

[0004] Similarly, when the vehicle is restarted, the air ducts trigger thermal convection cooling, but because the air ducts are relatively far from the plate (hot surface), the cooling of the plate is slow.

[0005] Therefore, an aluminum alloy brake disc core and a brake disc made therefrom are proposed to address the above problems. Utility Model Content

[0006] The purpose of this invention is to provide an aluminum alloy brake disc core and a brake disc made therefrom, so as to solve the problem of poor heat dissipation performance of brake discs mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An aluminum alloy brake disc core and a brake disc made therefrom, comprising a perforated aluminum ring having multiple layers, wherein the perforated aluminum ring has multiple rows of through holes arranged in a concentric circular array on its annular surface.

[0009] An array of perforated aluminum pads is provided between each of the multi-layered perforated aluminum rings;

[0010] In this process, the perforated aluminum ring, the array of perforated aluminum pads, the perforated aluminum ring, the array of perforated aluminum pads, the perforated aluminum ring, the array of perforated aluminum pads, the perforated aluminum ring, the array of perforated aluminum pads, and the perforated aluminum ring are stacked alternately to form an assembly. Iron pins are pressed into the perforated holes of the through holes and the array of perforated aluminum pads, and then riveted and brazed into a whole to obtain the aluminum alloy brake disc core.

[0011] Preferably, the array of perforated aluminum gaskets consists of multiple perforated gaskets, and each perforated gasket has a gasket hole that penetrates through it.

[0012] Preferably, the space formed between the multi-layered perforated aluminum rings and the array of perforated aluminum pads constitutes the air duct on the aluminum alloy brake disc core.

[0013] Preferably, the number of layers of the perforated aluminum ring is N, the number of layers of the array of perforated aluminum gaskets is N-1, and an array of perforated aluminum gaskets is sandwiched between each layer of the multiple layers of the perforated aluminum ring, wherein the number of layers N≥3.

[0014] Preferably, one side of the aluminum alloy brake disc core is compositely connected to the brake ring, and the other side is compositely connected to the flanged brake ring, forming a multi-layer composite brake disc.

[0015] Preferably, the inner side of the flanged iron ring is provided with multiple flanges, and the flanges are provided with vertically penetrating assembly holes.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. In this utility model, the multi-layer air duct formed by the overlapping of perforated aluminum rings and arrayed perforated aluminum pads greatly increases the contact area between the vehicle and the airflow during vehicle operation, which is conducive to rapid heat dissipation compared with ordinary single-row air duct cast iron brake discs.

[0018] 2. In this utility model, through the arrangement of the brake iron ring, flanged iron ring, multi-layer composite brake disc, flange, and mounting hole, the brake iron ring and flanged iron ring are thin rings tightly attached to the aluminum alloy brake disc core. Therefore, compared with ordinary single-row air duct cast iron brake discs, the frictional heat of the highest heating surface of the brake iron ring and flanged iron ring can be transferred to the aluminum alloy brake disc core more quickly. Under the same braking kinetic energy, the temperature of the friction surface is reduced. Furthermore, this application adopts an aluminum / iron composite structure, which greatly improves the lightweight of the cast iron brake disc. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the perforated aluminum ring structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the array perforated gasket structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the assembly and disassembly structure of the aluminum alloy brake disc core of this utility model;

[0022] Figure 4 This is a schematic diagram of the aluminum alloy brake disc core structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the assembly and disassembly structure of the multi-layer composite brake disc of this utility model;

[0024] Figure 6 This is a schematic diagram of the multi-layer composite brake disc structure of this utility model.

[0025] In the diagram: 1. Perforated aluminum ring; 2. Array of perforated aluminum gaskets; 3. Iron pin; 4. Aluminum alloy brake disc core; 5. Brake iron ring; 6. Iron ring with flange; 7. Air duct; 8. Multi-layer composite brake disc; 9. Through hole; 10. Perforated gasket; 11. Gasket hole; 12. Flange flange; 13. Assembly hole. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0028] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0029] Please see Figure 1-6 This utility model provides a technical solution:

[0030] An aluminum alloy brake disc core and a brake disc made therefrom, comprising a perforated aluminum ring 1, the perforated aluminum ring 1 having multiple layers, and multiple rows of through holes 9 arranged in a concentric circular array on its annular surface;

[0031] An array of perforated aluminum pads 2 are provided between the multi-layer perforated aluminum rings 1;

[0032] In this assembly, the perforated aluminum ring 1 – the array of perforated aluminum pads 2 – the array of perforated aluminum pads 2 – the array of perforated aluminum pads 2 – the array of perforated aluminum pads 2 – the array of perforated aluminum pads 2 – the array of perforated aluminum pads 2 – the array of perforated aluminum pads 2 – the array of perforated aluminum pads 1 are stacked alternately to form an assembly. Iron pins 3 are pressed into the perforated holes 9 and the array of perforated aluminum pads 2, and then riveted and brazed to form a whole, thus obtaining the aluminum alloy brake disc core 4. The array of perforated aluminum pads 2 consists of multiple perforated pads 10, each with a perforated hole 11 penetrating through it. When multiple layers of perforated aluminum rings 1, multiple layers of array of perforated aluminum pads 2, and… When the iron pin 3 is integrated, the space formed between the multi-layer perforated aluminum ring 1 and the array perforated aluminum pad 2 constitutes the air duct 7 on the aluminum alloy brake disc core 4. The perforated aluminum ring 1 has N layers, the array perforated aluminum pad 2 has N-1 layers, and the array perforated aluminum pad 2 is sandwiched between each layer of the multi-layer perforated aluminum ring 1. The number of layers N≥3. The multi-layer air duct 7, formed by the overlapping of the perforated aluminum ring 1 and the array perforated aluminum pad 2, greatly increases the contact area with airflow when the vehicle is running, which is conducive to rapid heat dissipation compared with ordinary single-row air duct cast iron brake discs.

[0033] The aluminum alloy brake disc core 4 is compositely connected to the brake ring 5 on one side and to the flanged iron ring 6 on the other side, forming a multi-layer air duct composite brake disc 8. The flanged iron ring 6 has multiple flanges 12 on its inner side, and the flanges 12 have vertical mounting holes 13 that penetrate the flanges 12. Since the brake ring 5 and the flanged iron ring 6 are thin rings tightly attached to the aluminum alloy brake disc core 4, compared with ordinary single-row air duct cast iron brake discs, the frictional heat of the highest heating surface of the brake ring 5 and the flanged iron ring 6 can be transferred to the aluminum alloy brake disc core 4 more quickly. Under the same braking kinetic energy, the temperature of the friction surface is reduced. Furthermore, this application adopts an aluminum / iron composite structure, which greatly improves the lightweight of the brake disc.

[0034] Workflow: The perforated aluminum ring 1 is a thin ring with multiple rows of through holes 9 arranged in a concentric array on its surface. Generally, the number of rows of arrayed through holes 9, the number of through holes 9 in each row, and their distribution can be determined as needed. Each perforated gasket 10 contains one gasket hole 11. The gasket holes 11 of the arrayed perforated gasket 10 correspond one-to-one with the arrayed through holes 9 on the perforated aluminum ring 1. In this application, each perforated gasket 10 is a thin, rhomboid-like shape, arranged in a circular pattern around its center. The pads are arranged radially, with the diameter of the pad hole 11 matching the diameter of the through hole 9 of the perforated aluminum ring 1. Generally, the shape, orientation, and number of holes of the perforated pad 10 can be determined as needed. When assembling the aluminum alloy brake disc core 4, the multi-layer array of perforated aluminum pads 2 are sandwiched between the layers of the perforated aluminum ring 1, and the through holes 9 of the perforated aluminum ring 1 are aligned one-to-one with the pad holes 11 of the array of perforated aluminum pads 2. The layers are stacked alternately, and the number of each layer can be determined as needed. If set The number of layers of the multi-layer perforated aluminum ring 1 is N, and the number of layers of the multi-layer array perforated aluminum gasket 2 is N-1, so that after assembly, the perforated aluminum ring 1 is located at the outer ends of both sides of the aluminum alloy brake disc core 4, wherein the number of layers N≥3. After the multi-layer perforated aluminum ring 1 and the multi-layer array perforated aluminum gasket 2 are stacked together in the above method, the iron pin 3 is pressed into each array hole (through hole 9 and gasket hole 11) of the assembly, riveted and brazed into a whole, thus obtaining the aluminum alloy brake disc core 4. The space formed between the perforated aluminum ring 1 and the array perforated aluminum gasket 2 between the layers constitutes the air duct 7 of the aluminum alloy brake disc core 4. Compared with the ordinary single-row air duct cast iron brake disc, the multi-layer air duct greatly increases the contact area with airflow when the vehicle is running, which is conducive to rapid heat dissipation. At the same time, the aluminum material used in this utility model is a high thermal conductivity material with a thermal conductivity of 237W / m·K (while the thermal conductivity of gray cast iron is only 39).(2W / m·K), further improving cooling efficiency. The flanged iron ring 6 includes multiple flanges 12 and mounting holes 13. The mounting holes 13 are used to fix the composite brake disc to the vehicle axle (not shown). Both the brake iron ring 5 and the flanged iron ring 6 are thin annular shapes. The brake iron ring 5, the aluminum alloy brake disc core 4, and the flanged iron ring 6 are compositely connected together (e.g., by brazing, friction welding, laser welding, and mechanical fasteners, or a combination thereof), resulting in the multi-layer air duct composite brake disc 8 of this invention. Since the brake iron ring 5 and the flanged iron ring 6 of this invention are made of iron, they can well meet the requirements of braking performance and wear resistance. Because the brake iron ring 5 and the flanged iron ring 6 are thin annular shapes that are tightly attached to the aluminum alloy brake disc core 4, compared with ordinary single-row cast iron brake discs, the brake iron... The frictional heat from the friction surfaces of ring 5 and the flanged iron ring 6 can be rapidly transferred to the aluminum alloy brake disc core 4. Under the same braking kinetic energy, this reduces the temperature of the friction surfaces. Furthermore, the close proximity of the friction surfaces to the air duct 7 accelerates cooling through convective heat transfer. Because the heat from the brake disc friction surfaces is rapidly conducted to the core center area and convective heat dissipation is effectively utilized, the temperature of the friction surfaces is lower under the same braking conditions, effectively suppressing heat fade and extending the life of the friction-pair brake pads. The multi-layer composite brake disc 8 of this invention adopts an aluminum / iron composite structure, significantly improving the lightweight design of cast iron brake discs. Since the components of the aluminum alloy brake disc core 4 of this invention have simple shapes and are easy to process, they can be manufactured economically, offering good cost-effectiveness and mass production capability.

[0035] Contents not described in detail in this specification are existing technologies known to those skilled in the art. Standard parts used in this invention can all be purchased commercially, and irregularly shaped parts can be custom-made according to the description and drawings. The specific connection methods for each part all employ conventional methods such as bolts, rivets, and welding, which are already mature technologies. The machinery, parts, and equipment all use conventional models from the prior art, and the circuit connections also employ conventional connection methods from the prior art, which will not be detailed here.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An aluminum alloy brake disc core and a brake disc made therefrom, comprising a perforated aluminum ring (1), characterized in that: The perforated aluminum ring (1) has multiple layers, and multiple rows of through holes (9) arranged in a concentric circular array are opened on its annular surface. An array of perforated aluminum gaskets (2) are provided between the perforated aluminum rings (1) in the multilayer structure. In this process, the perforated aluminum ring (1) – the perforated aluminum pad (2) – the perforated aluminum pad (2) – the perforated aluminum ring (1) – the perforated aluminum pad (2) – the perforated aluminum ring (1) – … the perforated aluminum pad (2) – the perforated aluminum ring (1) are stacked layer by layer to form an assembly. The iron pin (3) is pressed into the perforated hole (9) and the perforated aluminum pad (2) and riveted and brazed into a whole to obtain the aluminum alloy brake disc core (4).

2. The aluminum alloy brake disc core and the brake disc made therefrom as described in claim 1, characterized in that: The array of perforated aluminum pads (2) consists of multiple perforated pads (10), and the perforated pads (10) have perforated holes (11) inside.

3. The aluminum alloy brake disc core and the brake disc made therefrom as described in claim 2, characterized in that: The space formed between the multi-layered perforated aluminum ring (1) and the array of perforated aluminum pads (2) constitutes the air duct (7) on the aluminum alloy brake disc core (4).

4. The aluminum alloy brake disc core and the brake disc made therefrom as described in claim 3, characterized in that: The number of layers of the perforated aluminum ring (1) is N, the number of layers of the array perforated aluminum pad (2) is N-1, and an array perforated aluminum pad (2) is sandwiched between each layer of the multiple layers of the perforated aluminum ring (1), wherein the number of layers N≥3.

5. The aluminum alloy brake disc core and the brake disc made therefrom as described in claim 4, characterized in that: The aluminum alloy brake disc core (4) is connected to the brake iron ring (5) on one side and to the flanged iron ring (6) on the other side, forming a multi-layer air duct composite brake disc (8).

6. The aluminum alloy brake disc core and the brake disc made therefrom as described in claim 5, characterized in that: The flanged iron ring (6) has multiple flanges (12) on its inner side, and the flanges (12) have vertically penetrating assembly holes (13) inside.

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