Light brake disc

Abstract

A brake disc body comprises a front side disc body, a rear side disc body and a plurality of groups of radiating ribs, the front side disc body and the rear side disc body are made of metal materials and integrally formed, the radiating ribs are arranged between the front side disc body and the rear side disc body and form radiating channels which are communicated with each other, and a metal disc cap is integrally arranged on the outer side of the front side disc body. One group of radiating ribs comprises first ribs, second ribs, first rib bulges and second rib bulges which are different in length and are arranged in two rows along the radial direction, the first ribs and the second ribs are arranged at intervals along the radial direction, and the outer ends of the first ribs and the inner ends of the second ribs are respectively flush with the outer sides and the inner sides of the front side disc body and the rear side disc body; the first rib protrusions and the second rib protrusions are arranged at intervals in the radial direction, the outer ends of the first rib protrusions are flush with the outer side of the front side disc body and the outer side of the rear side disc body, and the second rib protrusions are located on one side of the interval between the first rib strips and the second rib strips. According to the light brake disc, airflow circulation is accelerated, heat dissipation is accelerated, thermal fatigue and hot cracks of the brake disc body are reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of brake discs, in particular to a lightweight brake disc. Background Art

[0002] Brake discs are an indispensable part of transportation such as high-speed trains and automobiles. Traditional brake discs are made of cast iron, cast steel, forged steel and other materials, and use the high-intensity friction between the brake disc and the brake pad to achieve parking. The brake discs of high-speed trains are frequently braked during long-term service. The friction surface of the brake disc is constantly subjected to the effects of hot and cold cycle loads and the cyclic thermal stress generated, which can easily cause fatigue failure and thermal fatigue of the brake disc material. Damage and failure of the brake disc pose a serious threat to safe operation. Utility Model Content

[0003] In order to solve the problem that the traditional brake disc is easily affected by the cyclic thermal stress after long-term service, the utility model provides a lightweight brake disc.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A lightweight brake disc, the brake disc body comprises a front disc body and a rear disc body integrally formed of metal material, and a plurality of heat dissipation ribs between the front disc body and the rear disc body forming mutually connected heat dissipation channels, and a metal disc cap is integrally arranged on the outer side of the front disc body;

[0006] A group of heat dissipation ribs include a first rib, a second rib, a first rib protrusion and a second rib protrusion of different lengths arranged in two rows along the radial direction. The first rib and the second rib are arranged in a row with radial intervals, and the outer end of the first rib and the inner end of the second rib are flush with the outer side and inner side of the front disk body and the rear disk body respectively. The first rib protrusion and the second rib protrusion are arranged in a row with radial intervals, and the outer end of the first rib protrusion is flush with the outer side of the front disk body and the rear disk body, and the second rib protrusion is located on one side of the interval between the first rib and the second rib.

[0007] Preferably, a front placement groove is provided on the outer side of the front disc body, a front friction ring is fixed in the front placement groove, and the front friction ring is flush with the front disc body; a rear placement groove is provided on the outer side of the rear disc body, a rear friction ring is fixed in the rear placement groove, and the rear friction ring is flush with the rear disc body, and the front friction ring and the rear friction ring are made of composite materials.

[0008] Preferably, the first rib and the second rib are arranged in an arc shape, and the first rib and the second rib are located on the same arc line; the first rib protrusion and the second rib protrusion are arranged to be located on the same arc line.

[0009] Preferably, the front and side surfaces of the front placement groove and the rear placement groove are provided with ventilation holes, and the front friction ring and the rear friction ring are provided with heat dissipation holes.

[0010] Preferably, three thread grooves are respectively arranged in the front placement groove and the rear placement groove, and three thread columns are respectively arranged in the front friction ring and the rear friction ring, the thread column of the front friction ring is connected to the thread groove of the front placement groove, and the thread column of the rear friction ring is connected to the thread groove of the rear placement groove.

[0011] Preferably, the composite material is a SiC particle reinforced aluminum-based composite material.

[0012] Preferably, the arc length of the first rib is smaller than the arc length of the second rib, and the arc lengths of the first rib protrusion and the second rib protrusion are the same.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the lightweight brake disc of the utility model, the plurality of groups of heat dissipation ribs in the middle of the brake disc body, the airflow between each group of heat dissipation ribs, the airflow in a group of heat dissipation ribs, the interval between the first rib and the second rib and the interval between the first rib convex and the second rib convex, and the cavity formed in the middle enable the airflow in the middle of the brake disc body to flow in any direction, accelerate the airflow circulation, accelerate the heat dissipation, reduce the generation of thermal fatigue and thermal cracks of the brake disc body, and extend the service life. In addition, the brake disc body is integrally formed of metal material, and the structural design and position design of the heat dissipation ribs enhance the strength of the brake disc body and extend the service life of the brake disc body. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the structure of a lightweight brake disc in use;

[0015] Figure 2 It is a schematic diagram of the structure of a heat dissipation rib of a lightweight brake disc;

[0016] Figure 3 It is a schematic diagram of the structure of the front disc body of a lightweight brake disc;

[0017] Figure 4 The figure is a schematic diagram of the structure of a front friction ring of a lightweight brake disc.

[0018] In the attached drawings: 1, front disk body; 2, rear disk body; 3, heat dissipation ribs; 4, metal disk cap; 5, front friction ring; 11, front placement groove; 12, ventilation hole; 13, threaded groove; 31, first rib; 32, second rib; 33, first rib convex; 34, second rib convex; 51, heat dissipation hole; 52, threaded column. DETAILED DESCRIPTION

[0019] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. For those skilled in the art, the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present invention by illustrating examples of the present invention.

[0020] like Figure 1 and Figure 2 As shown, the lightweight brake disc of the utility model comprises a front disc body 1 and a rear disc body 2 which are integrally formed of metal material, and a plurality of groups of heat dissipation ribs 3 which form mutually connected heat dissipation channels between the front disc body and the rear disc body, and a metal disc cap 4 is integrally arranged on the outer side of the front disc body 1; a group of heat dissipation ribs 3 comprises a first rib 31, a second rib 32, a first rib protrusion 33 and a second rib protrusion 34 of different lengths which are radially arranged in two rows, the first rib 31 and the second rib 32 are radially spaced and arranged in a row, and the outer end of the first rib 31 is connected to the front disc body 1. The outer sides of the side disk body and the rear disk body are flush, the inner ends of the second ribs 32 are flush with the inner sides of the front disk body and the rear disk body, the first ribs 33 and the second ribs 34 are arranged in a row along the radial interval, the outer ends of the first ribs 33 are flush with the outer sides of the front disk body and the rear disk body, the second ribs 34 are located on one side of the interval between the first ribs and the second ribs, and the second ribs are surrounded by cavities. After the airflow passes through, it is connected in all directions. The airflow circulates freely between the front disk body and the rear disk body, which speeds up the airflow circulation speed, speeds up the heat dissipation speed, and the heat dissipation ribs themselves strengthen the structural strength.

[0021] The first rib and the second rib are arranged in an arc shape, and the first rib and the second rib are located on the same arc line; the first rib protrusion and the second rib protrusion are arranged to be located on the same arc line, and the air flow channel formed by the first rib, the second rib, the first rib protrusion and the second rib protrusion is more conducive to heat dissipation. The arc length of the first rib is smaller than the arc length of the second rib, and the arc lengths of the first rib protrusion and the second rib protrusion are the same, thereby increasing the strength of the brake disc body.

[0022] like Figure 3 and Figure 4 As shown, a front placement groove 11 is provided on the outer side of the front disk body 1, and a front friction ring 5 is fixed in the front placement groove 11. The front friction ring is flush with the front disk body, and ventilation holes 12 are provided on the front and sides of the front placement groove 11. The front friction ring 5 is provided with heat dissipation holes 51. Three threaded grooves 13 are provided in the front placement groove 11, and the front friction ring 5 is provided with three threaded columns 52. The threaded columns 52 of the front friction ring are matched and connected with the threaded grooves 13 of the front placement groove.

[0023] The rear side disc has the same structural design as the front side disc. The rear side disc is provided with a rear placement groove on the outside. The rear friction ring is fixed in the rear placement groove and is flush with the rear side disc. Ventilation holes are provided on the front and side of the rear placement groove, and the rear friction ring is provided with heat dissipation holes. The structure of the rear friction ring is the same as that of the front friction ring. Three thread grooves are provided in the rear placement groove, and the rear friction ring is provided with three thread columns. The thread columns of the rear friction ring are connected with the thread grooves of the rear placement groove. The front friction ring and the rear friction ring are made of SiC particle reinforced aluminum matrix composite material.

[0024] The material of the front friction ring and the rear friction ring is a lightweight and high-strength composite material with good thermal conductivity, wear resistance and heat resistance. It not only reduces the overall mass of the brake disc body, but also enhances the wear resistance and heat resistance of the brake disc body, which can control costs and meet the lightweight development needs of the brake disc body.

[0025] The heat generated by the front friction ring is dissipated through the ventilation holes on the front side of the front placement slot, and can also be dissipated through the ventilation holes on the side of the front placement slot, which increases the heat dissipation area and speeds up the heat dissipation speed. Similarly, the heat generated by the rear friction ring is dissipated through the ventilation holes on the front side of the rear placement slot, and can also be dissipated through the ventilation holes on the side of the rear placement slot, which increases the heat dissipation area and speeds up the heat dissipation speed.

[0026] The front friction ring is connected to the front placement groove through three threaded columns, and the rear friction ring is connected to the rear placement groove through three threaded columns. The direct threaded connection simplifies the structure of the front and rear friction rings, while ensuring the convenience and stability of the connection. When the front and rear friction rings are worn, they can be directly replaced. When the front and rear discs and several heat dissipation ribs are replaced, the use of the front and rear friction rings is not affected, reducing the consumption cost.

[0027] In summary, the lightweight brake disc of the utility model achieves a perfect combination of lightweight brake disc and efficient heat dissipation by optimizing the heat dissipation structure and combining lightweight and high-strength front friction rings and rear friction rings. It can meet the strict requirements of high-speed trains on brake discs, improve the safety and reliability of trains, and is conducive to the lightweight development of trains.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0029] According to the embodiments of the present invention as described above, these embodiments do not describe all the details in detail, nor do they limit the present invention to specific embodiments. Obviously, many modifications and changes can be made based on the above description. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that technicians in the relevant technical field can make good use of the present invention and the modified use based on the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A lightweight brake disc, characterized in that: The brake disc body includes a front disc body and a rear disc body integrally formed of metal material, and a plurality of heat dissipation ribs between the front disc body and the rear disc body forming mutually connected heat dissipation channels, and a metal disc cap is integrally arranged on the outer side of the front disc body; A group of heat dissipation ribs include a first rib, a second rib, a first rib protrusion and a second rib protrusion of different lengths arranged in two rows along the radial direction. The first rib and the second rib are arranged in a row with radial intervals, and the outer end of the first rib and the inner end of the second rib are flush with the outer side and inner side of the front disk body and the rear disk body respectively. The first rib protrusion and the second rib protrusion are arranged in a row with radial intervals, and the outer end of the first rib protrusion is flush with the outer side of the front disk body and the rear disk body, and the second rib protrusion is located on one side of the interval between the first rib and the second rib.

2. The lightweight brake disc according to claim 1, characterized in that: A front placement groove is arranged on the outer side of the front disc body, a front friction ring is fixed in the front placement groove, and the front friction ring is flush with the front disc body; a rear placement groove is arranged on the outer side of the rear disc body, a rear friction ring is fixed in the rear placement groove, and the rear friction ring is flush with the rear disc body, and the front friction ring and the rear friction ring are made of composite materials.

3. The lightweight brake disc according to claim 1, characterized in that: The first rib and the second rib are arranged in an arc shape, and the first rib and the second rib are located on the same arc line; the first rib protrusion and the second rib protrusion are arranged to be located on the same arc line.

4. The lightweight brake disc according to claim 2, characterized in that: The front and side surfaces of the front placement groove and the rear placement groove are both provided with ventilation holes, and the front friction ring and the rear friction ring are provided with heat dissipation holes.

5. The lightweight brake disc according to claim 2, characterized in that: The front placement groove and the rear placement groove are respectively provided with three thread grooves, and the front friction ring and the rear friction ring are respectively provided with three thread columns, the thread column of the front friction ring is connected to the thread groove of the front placement groove, and the thread column of the rear friction ring is connected to the thread groove of the rear placement groove.

6. The lightweight brake disc according to claim 2, characterized in that: The composite material is a SiC particle reinforced aluminum matrix composite material.

7. The lightweight brake disc according to claim 3, characterized in that: The arc length of the first rib is smaller than the arc length of the second rib, and the arc lengths of the first rib protrusion and the second rib protrusion are the same.

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