Drum-shaped brake disc with multi-air-duct structure

Abstract

The utility model relates to the technical field of brake discs, in particular to a drum-shaped brake disc with a multi-air-duct structure, which comprises a drum-shaped brake disc main body, the drum-shaped brake disc main body consists of an upper disc body and a lower disc body, a central shaft sleeve is fixedly arranged at the central position of the two disc bodies, and a ventilation gap is arranged between the two disc bodies. A plurality of ventilation holes are formed in the disc bodies, an anti-rust layer is arranged on the surface of the drum-shaped brake disc body, a plurality of sets of first supporting columns are fixedly installed between the two disc bodies, ventilation cavities are formed in the first supporting columns, the upper ends and the lower ends of the ventilation cavities communicate with the outside, and a plurality of air inlet holes are formed in the annular side faces of the first supporting columns. A plurality of sets of second supporting columns which are annularly arranged at equal intervals are further fixedly installed between the two disc bodies, and a plurality of sets of heat dissipation holes which are arranged at equal intervals are formed in the annular side faces of the second supporting columns. The LED lamp is provided with a multi-air-channel heat dissipation structure, and the heat dissipation effect can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of brake discs, in particular to a drum-shaped brake disc with a multi-air duct structure. Background Art

[0002] Drum brakes are a common vehicle braking device. Their working principle is to generate friction by rubbing the brake drum as the wheel rotates through the brake shoe (brake pad) to reduce the wheel rotation speed, thereby achieving the braking effect. Drum brakes have the advantages of large braking force, simple structure, and small space occupation. Therefore, they are still widely used in some heavy commercial vehicles and construction machinery.

[0003] However, traditional drum brakes also have some significant drawbacks. First, the brake drum and brake shoes generate a large amount of heat during braking, and the heat dissipation conditions inside the brake drum are relatively poor. This can lead to thermal degradation of braking performance, affecting braking stability and safety. Second, most drum brake discs are not rust-resistant and are prone to rusting if not used for a long time. This rust will increase the wear of the brake drum and brake shoes, causing inconvenience to the user. In view of this, we proposed a drum brake disc with a multi-duct structure. Utility Model Content

[0004] The purpose of the present invention is to provide a drum brake disc with a multi-air duct structure to solve the defects mentioned in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A drum brake disc with a multi-duct structure includes a drum brake disc main body, which is composed of two symmetrical disc bodies above and below. A center sleeve is fixedly installed at the center position of the two disc bodies, a ventilation gap is arranged between the two disc bodies, and a plurality of ventilation holes connected to the outside world are arranged on the disc body. An anti-rust layer is provided on the surface of the drum brake disc main body, and a plurality of groups of first support columns arranged in an annular shape with equal intervals are fixedly installed between the two disc bodies, a ventilation chamber is provided in the first support column, and the upper and lower ends of the ventilation chamber are both connected to the outside world, and a plurality of air inlet holes connected to the interior of the ventilation chamber are provided on the annular side surface of the first support column. A plurality of second support columns arranged in an annular shape with equal intervals are also fixedly installed between the two disc bodies, and a plurality of groups of heat dissipation holes arranged in annular shapes with equal intervals are provided on the annular side surface of the second support column.

[0007] Preferably, the thickness of the anti-rust layer is between 0.3 mm and 1.5 mm, and the anti-rust layer and the drum brake disc body are an integrally formed structure.

[0008] Preferably, an axial hole is provided at the center of the central sleeve, and a plurality of bolt holes arranged in a ring shape with equal intervals are provided on the central sleeve.

[0009] Preferably, both ends of the first support column extend to the top surface and the bottom surface of the upper and lower disk bodies respectively, and the disk body, the first support column and the second support column are an integrally formed structure.

[0010] Preferably, an inner support frame is fixedly mounted on the inner wall of the ventilation chamber, and the cross section of the inner support frame is cross-shaped.

[0011] Preferably, a plurality of conducting holes are provided on each side plate of the inner support frame, and the inner diameter of the air inlet hole is larger than the width of each side plate of the inner support frame.

[0012] Preferably, a central conducting cavity is provided at the center of the second supporting column, and the heat dissipation hole and the central conducting cavity are communicated with each other.

[0013] Preferably, a heat dissipation gap is provided between the first support column and the second support column, and the inner diameter of the ventilation hole is greater than 0.3 cm.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The utility model can perform better heat dissipation operation on the disk body by setting ventilation gaps and ventilation holes. In addition, in conjunction with the first support column and the second support column, it can ensure that the structure between the upper and lower disk bodies is more solid and stable, and air inlet holes and heat dissipation holes are set in the first support column and the second support column to realize multi-air duct heat dissipation operation and improve the heat dissipation effect.

[0016] 2. The utility model has an anti-rust layer, which can provide a certain anti-rust protection effect. The ventilation chamber is provided, and both ends of the ventilation chamber are connected to the outside world, which is conducive to air flow and improves the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a cross-sectional view of the second support column of the present invention;

[0019] Figure 3 This is a cross-sectional view of the first support column of the present invention;

[0020] The meaning of each number in the figure is:

[0021] 1. Drum brake disc body; 10. Disc body; 11. Center bushing; 12. Shaft hole; 13. Bolt hole; 14. Ventilation gap; 15. Ventilation hole; 16. Anti-rust layer;

[0022] 2. First support column; 20. Ventilation chamber; 21. Air inlet; 22. Inner support frame; 23. Conducting hole;

[0023] 3. Second support column; 30. Heat dissipation hole; 31. Central conduction cavity;

[0024] 4. Heat dissipation gap. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1-Figure 3 The utility model provides a technical solution: a drum brake disc with a multi-air duct structure, including a drum brake disc body 1, which is composed of two upper and lower symmetrical disc bodies 10. A central shaft sleeve 11 is fixedly installed at the center position of the two disc bodies 10, and a ventilation gap 14 is provided between the two disc bodies 10. The ventilation gap 14 is used for air flow to perform heat dissipation operations;

[0027] Specifically, the disk body 10 is provided with a plurality of ventilation holes 15 connected to the outside world. The ventilation holes 15 are arranged along the thickness direction of the disk body 10. The upper and lower ends of the ventilation holes 15 are both connected to the outside world to achieve heat dissipation.

[0028] Specifically, a rust-proof layer 16 is provided on the surface of the drum brake disc main body 1, and a plurality of groups of first support columns 2 arranged in an annular shape with equal intervals are fixedly installed between the two disc bodies 10, and a ventilation chamber 20 is provided in the first support column 2, and the upper and lower ends of the ventilation chamber 20 are connected to the outside world. A plurality of air inlet holes 21 connected to the interior of the ventilation chamber 20 are provided on the annular side surface of the first support column 2, and a plurality of groups of second support columns 3 arranged in an annular shape with equal intervals are also fixedly installed between the two disc bodies 10, and a plurality of groups of heat dissipation holes 30 arranged in an annular side surface of the second support column 3 are provided. The two ends of the first support column 2 extend to the top and bottom surfaces of the upper and lower disc bodies 10 respectively. The disc body 10, the first support column 2 and the second support column 3 are an integrally formed structure, so that the first support column 2 and the second support column 3 are used to support the upper and lower disc bodies 10. In addition, ventilation is carried out in conjunction with the ventilation chamber 20, the air inlet holes 21 and the heat dissipation holes 30 to achieve multi-channel heat dissipation operation.

[0029] In this embodiment, the thickness of the anti-rust layer 16 is between 0.3 mm and 1.5 mm. The anti-rust layer 16 and the drum brake disc body 1 are an integrally formed structure. The anti-rust layer 16 is provided to provide anti-rust protection. The anti-rust layer 16 can be made by carbonitriding technology. Carbonitriding technology is a process in which a gaseous or liquid organic compound containing carbon and nitrogen is passed into a furnace, active atoms of carbon and nitrogen are precipitated at high temperature, and penetrate into the surface of the brake disc. This technology can form a dense anti-rust layer, which significantly improves the rust resistance of the brake disc.

[0030] Specifically, an axial hole 12 is provided at the center of the central sleeve 11 , and a plurality of bolt holes 13 arranged in a ring shape and at equal intervals are provided on the central sleeve 11 for normal assembly operations using fastening bolts.

[0031] Furthermore, an inner support frame 22 is fixedly installed on the inner wall of the ventilation chamber 20. The cross section of the inner support frame 22 is cross-shaped, which can realize the compression support operation on the interior of the first support column 2 and ensure that the structure of the first support column 2 is more firm and stable.

[0032] In addition, a plurality of conducting holes 23 are provided on each side plate of the inner support frame 22, and the inner diameter of the air inlet hole 21 is larger than the width of each side plate of the inner support frame 22, so that air can circulate normally in the conducting holes 23 and the air inlet hole 21.

[0033] It is worth noting that a central conducting cavity 31 is provided at the center of the second support column 3 , and the heat dissipation holes 30 are interconnected with the central conducting cavity 31 , so that multiple heat dissipation holes 30 are interconnected to improve ventilation and heat dissipation effects.

[0034] It is worth noting that a heat dissipation gap 4 is provided between the first support column 2 and the second support column 3 , and the inner diameter of the ventilation hole 15 is greater than 0.3 cm, so that the heat dissipation gap 4 can allow air to circulate for heat dissipation.

[0035] When the drum brake disc with a multi-air duct structure of the present invention is in use, after the center sleeve 11 is fixedly installed on the main shaft on the frame, as the car is driving, air can flow along the ventilation gap 14 and the ventilation hole 15. In addition, part of the air can flow along the heat dissipation holes 30, the central conducting cavity 31, the air inlet hole 21 and the ventilation chamber 20. After the air flows, it can take away the heat on the disc body 10, thereby realizing a multi-channel heat dissipation operation.

[0036] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A drum brake disc with a multi-duct structure, comprising a drum brake disc body (1), characterized in that: The drum brake disc body (1) is composed of two symmetrical disc bodies (10) on the upper and lower sides. A central sleeve (11) is fixedly installed at the center of the two disc bodies (10). A ventilation gap (14) is provided between the two disc bodies (10). The disc body (10) is provided with a plurality of ventilation holes (15) connected to the outside world. A rust-proof layer (16) is provided on the surface of the drum brake disc body (1). A plurality of first support members arranged in a ring shape with equal spacing are fixedly installed between the two disc bodies (10). A support column (2), a ventilation chamber (20) is provided in the first support column (2), the upper and lower ends of the ventilation chamber (20) are both connected to the outside world, a plurality of air inlet holes (21) connected to the interior of the ventilation chamber (20) are provided on the annular side surface of the first support column (2), and a plurality of groups of second support columns (3) arranged in an annular shape with equal intervals are fixedly installed between the two disk bodies (10), and a plurality of groups of heat dissipation holes (30) arranged at equal intervals are provided on the annular side surface of the second support column (3).

2. The drum brake disc with a multi-duct structure according to claim 1, characterized in that: The thickness of the anti-rust layer (16) is between 0.3 mm and 1.5 mm, and the anti-rust layer (16) and the drum brake disc body (1) are an integrally formed structure.

3. The drum brake disc with a multi-duct structure according to claim 1, characterized in that: An axial hole (12) is provided at the center of the central sleeve (11), and a plurality of bolt holes (13) arranged in an annular shape and at equal intervals are provided on the central sleeve (11).

4. The drum brake disc with a multi-duct structure according to claim 1, characterized in that: The two ends of the first support column (2) extend to the top surface and the bottom surface of the upper and lower disk bodies (10) respectively; the disk body (10), the first support column (2) and the second support column (3) are an integrally formed structure.

5. The drum brake disc with a multi-duct structure according to claim 1, characterized in that: An inner support frame (22) is fixedly mounted on the inner wall of the ventilation chamber (20), and the cross section of the inner support frame (22) is cross-shaped.

6. The drum brake disc with a multi-duct structure according to claim 5, characterized in that: A plurality of conducting holes (23) are provided on each side plate of the inner support frame (22), and the inner diameter of the air inlet hole (21) is greater than the width of each side plate of the inner support frame (22).

7. The drum brake disc with a multi-duct structure according to claim 1, characterized in that: A central conducting cavity (31) is provided at the center of the second support column (3), and the heat dissipation hole (30) and the central conducting cavity (31) are communicated with each other.

8. The drum brake disc with a multi-duct structure according to claim 1, characterized in that: A heat dissipation gap (4) is provided between the first support column (2) and the second support column (3), and the inner diameter of the ventilation hole (15) is greater than 0.3 cm.

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