Drum type automatic air-cooled heat dissipation brake device

Abstract

The utility model discloses a kind of drum type automatic air-cooled heat dissipation brake devices, belong to drum type brake system technical field, a kind of drum type automatic air-cooled heat dissipation brake execution system, including wheel rim, brake drum, wheel hub and bearing plate;Wheel rim, brake drum, wheel hub and brake mechanism are correspondingly provided with wheel rim vent hole, first brake drum vent hole, second brake drum vent hole, wheel hub vent hole and brake mechanism vent hole on, form two groups of ventilation heat dissipation channel;Multiple groups of fan blade with center as the axle circular array are equipped on wheel hub, and the fan blade of automobile coaxial wheel hub is symmetrically arranged left and right. When vehicle travels or brakes, fan blade rotates with wheel hub and generates cooling air from the outside of wheel to the inside of vehicle, and cooling air is along ventilation channel to cool brake mechanism. After testing, the device can reduce the brake temperature rise of 10 times continuous braking to 280~360 ℃, and the heat dissipation coefficient is improved to 50~150 W / m 2 ·K, can effectively avoid brake system failure, improve safety, and adapt to various assembly needs.

Description

Technical Field

[0001] This utility model relates to the technical field of drum braking systems, specifically to a drum-type automatic air-cooled braking device. Background Technology

[0002] The braking system is an important component of a car, which includes disc brake systems and drum brake systems. Drum brake systems achieve braking by engaging the brake drum with friction pads on the brake mechanism.

[0003] During braking, the friction pads rub against the brake drum, generating a large amount of heat. 95% of this heat is absorbed by the drum brake system. With frequent braking, the temperature of the drum brake system will rise significantly (potentially exceeding 600°C). Excessive temperature in the drum brake system can pose the following safety hazards:

[0004] 1. If the brake drum itself is not strong enough, it is prone to cracking and other malfunctions under high temperature conditions.

[0005] 2. The effectiveness of the friction pair formed between the brake drum and the friction pad will be reduced (the friction coefficient of the friction pad will decrease sharply at high temperatures), and the overall braking effect of the vehicle will be reduced, posing a potential risk of failure to stop the vehicle.

[0006] 3. Excessive temperature will accelerate the wear of friction pads and brake drums, reducing their lifespan.

[0007] Currently, conventional vehicles generate a lot of heat during braking. Because they lack internal ventilation openings and air-cooled fan blades, heat dissipation is slow, resulting in high temperatures in the drum brake system and reduced braking efficiency. Utility Model Content

[0008] The present invention aims to solve the above-mentioned technical problems by providing a drum-type automatic air-cooled heat dissipation braking device.

[0009] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0010] An automatic air-cooled brake actuation system with a drum-type design includes a wheel rim, a brake drum, a wheel hub, and a support plate; one side of the wheel rim is connected to the brake drum, and the side of the brake drum away from the wheel rim is connected to the wheel hub and the brake mechanism respectively.

[0011] The rim has multiple sets of rim ventilation holes;

[0012] The brake drum has a first brake drum ventilation hole and a second brake drum ventilation hole with multiple sets of connecting rim ventilation holes;

[0013] The hub has multiple sets of hub ventilation holes that connect to the ventilation holes of the first brake drum.

[0014] The bearing plate has multiple sets of brake mechanism ventilation holes that can connect to the wheel hub ventilation holes and the second brake drum ventilation holes.

[0015] The hub is provided with multiple sets of fan blades, and the multiple sets of fan blades are arranged in a circular array with the center of the hub as the axis.

[0016] Furthermore, the rim ventilation hole, the first brake drum ventilation hole, and the hub ventilation hole are connected in sequence, and together with the brake mechanism ventilation hole, they form a first ventilation and heat dissipation channel; the rim ventilation hole is connected to the second brake drum ventilation hole, and together with the brake mechanism ventilation hole, they form a second ventilation and heat dissipation channel.

[0017] Furthermore, the fan blades on the two hubs corresponding to the two rims on the same axle of the car are arranged symmetrically to ensure that the braking mechanisms on both sides can achieve uniform heat dissipation when the vehicle is driving or braking.

[0018] Furthermore, the rim, brake drum, and hub are connected and fixed by tire bolts. The rim and brake drum are provided with mounting holes that mate with the tire bolts, and the tire bolts are fixedly installed on the hub.

[0019] Furthermore, the rim ventilation holes, the first brake drum ventilation holes, the second brake drum ventilation holes, and the hub ventilation holes are all arranged in a circular array with the center of the rim as the axis, and there are no obstructions inside each ventilation hole to ensure smooth airflow and maximize the heat dissipation area.

[0020] With the above structure, this utility model has the following advantages:

[0021] This utility model features ventilation holes on the wheel rim, brake drum, wheel hub, and braking mechanism. These ventilation holes connect with the ventilation holes in the braking mechanism to form a ventilation and heat dissipation channel, ensuring smooth ventilation, increasing the heat dissipation area, and improving heat dissipation. It can dissipate heat from drum brake devices. The wheel hub is equipped with air-cooled fan blades. When the vehicle is moving or braking, the air-cooled fan blades on the wheel hub rotate, driving airflow to generate cold air to dissipate heat from the braking device, improve braking efficiency, prevent braking system failure, and improve the safety of the braking system.

[0022] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a first structural schematic diagram of the present invention;

[0025] Figure 2 This is a schematic diagram of the second structure of this utility model;

[0026] Figure 3 This is an exploded view of this utility model;

[0027] Figure 4 This is a schematic diagram of the disassembly of the support plate of this utility model.

[0028] Figure 5 This is a schematic diagram of the air intake of this utility model.

[0029] Figure 6 This is a schematic diagram of the temperature rise during the use of this utility model.

[0030] As shown in the figure: 1. Rim; 2. Brake drum; 3. Hub; 4. Bearing plate; 5. Rim ventilation hole; 6. First brake drum ventilation hole; 7. Second brake drum ventilation hole; 8. Hub ventilation hole; 9. Fan blade; 10. Tire bolt; 11. Hub cap; 12. Brake mechanism ventilation hole. Detailed Implementation

[0031] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0032] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0033] The present invention will now be described in further detail in conjunction with the full text.

[0034] Combined with appendix Figures 1-6 A drum-type automatic air-cooled braking device includes a wheel rim 1, a brake drum 2, a wheel hub 3, and a braking mechanism. One side of the wheel rim 1 is connected to the brake drum 2, and the side of the brake drum 2 away from the wheel rim 1 is connected to the wheel hub 3 and a support plate 4 respectively. A braking mechanism for braking is installed on the support plate 4. Specifically, the wheel rim 1, brake drum 2, wheel hub 3, support plate 4, and braking mechanism are all existing technologies and will not be described in detail here.

[0035] In specific implementation of this utility model, such as Figure 2 and Figure 3 As shown, the rim 1 has multiple sets of rim ventilation holes 5; the brake drum 2 has multiple sets of first brake drum ventilation holes 6 and second brake drum ventilation holes 7 that connect to the rim ventilation holes 5; the hub 3 has multiple sets of hub ventilation holes 8 that connect to the first brake drum ventilation holes 6; the support plate 4 has multiple sets of brake mechanism ventilation holes 12 that connect to the hub ventilation holes 8 and the second brake drum ventilation holes 7; the rim ventilation holes 5, the first brake drum ventilation holes 6, the hub ventilation holes 8, and the brake mechanism ventilation holes 12 form a first ventilation and heat dissipation channel.

[0036] In specific implementation of this utility model, such as Figures 2-4 As shown, multiple sets of rim ventilation holes 5 are provided on the rim 1, and a first brake drum ventilation hole 6 and a second brake drum ventilation hole 7 connecting the rim ventilation holes 5 are provided on the brake drum 2. A hub ventilation hole 8 connecting the rim ventilation holes 5 and the first brake drum ventilation hole 6 is provided on the hub 3. A brake mechanism ventilation hole 12 is provided on the support plate 4. The rim ventilation holes 5, the first brake drum ventilation hole 6, and the hub ventilation hole 8 connect with the brake mechanism ventilation hole 12 to form a ventilation and heat dissipation channel. Simultaneously, the rim ventilation holes 5 and the second brake drum ventilation hole 7 connect with the brake mechanism ventilation hole 12 to form a ventilation and heat dissipation channel. This ensures smooth ventilation, increases the heat dissipation area, and achieves better heat dissipation.

[0037] like Figure 6As shown, the hub is equipped with cooling fan blades. When the vehicle is moving or braking, the rotating fan blades on the hub drive air through the rim, brake drum, hub, and ventilation holes of the braking mechanism, causing air to flow from the outside of the vehicle to the center, generating cool air to dissipate heat from the braking system. A schematic diagram of the temperature rise of the braking actuator after 10 consecutive braking cycles at a vehicle speed of 100 km / h with a deceleration of 0.6g clearly shows that the temperature rise of the brake of this invention is slow, reaching a maximum of 347℃, which is far lower than the temperature of the brake without this invention. Before using this invention, the brake temperature rise after 10 consecutive braking cycles at a vehicle speed of 100 km / h with a deceleration of 0.6g was 500–600℃. After using this invention, the temperature rise after 10 consecutive braking cycles is 280–360℃. The heat dissipation coefficient of the braking system increases from 5–25 W / m²·K to 50–150 W / m²·K, significantly improving the heat dissipation performance of the braking system.

[0038] In specific implementation of this utility model, such as Figure 2 and Figure 3 As shown, the wheel hub 3 is equipped with multiple sets of fan blades 9. When the vehicle is driving or braking, the air-cooled fan blades 9 on the wheel hub 3 rotate to drive the airflow and generate cold air to dissipate heat from the braking mechanism and improve braking efficiency.

[0039] Specifically, the fan blades 9 are arranged in a circular array with the center of the wheel hub 3 as the axis. The fan blades 9 on the two wheel hubs 3 on the two rims 1 of the car are symmetrically arranged to ensure that the left and right braking mechanisms can dissipate heat when the vehicle is driving or braking.

[0040] In specific implementations, this utility model can be equipped with one left drum-type air-cooled braking device, one right drum-type air-cooled braking device, or two, three, four, or more drum-type air-cooled braking devices. It can also be equipped with only the left drum-type air-cooled braking device, only the right drum-type air-cooled braking device, or both left and right drum-type air-cooled braking devices.

[0041] Specifically, the wheel hub 3 is equipped with air-cooled fan blades 9, and the brake drum 2 can be fixedly assembled with the wheel rim 1 and the wheel hub 3. The wheel rim 1 is installed on the outer end face of the brake drum 2. When the vehicle is driving or braking, the wheel hub 3, the wheel rim 1 and the brake drum 2 rotate around a common axis. The rotation of the air-cooled fan blades 9 on the wheel hub 3 drives the airflow, generating a cooling airflow from the outside of the wheel to the inside of the vehicle, which dissipates heat from the braking device, improves braking efficiency, avoids braking system failure and improves the safety of the braking system.

[0042] The rim 1, brake drum 2 and hub 3 are connected together by tire bolts 10. The rim 1 and brake drum 2 have mounting holes that mate with the tire bolts 10, and the hub 3 is fixed with tire bolts 10.

[0043] The rim ventilation hole 5, the first brake drum ventilation hole 6, the second brake drum ventilation hole 7, and the hub ventilation hole 8 are arranged in a circular array with the center of the rim 1 as the axis.

[0044] Specifically, all ventilation holes should be kept unobstructed to ensure smooth ventilation, increase the heat dissipation area, and achieve better heat dissipation.

[0045] The working principle of this utility model:

[0046] The rim and tire are rigidly assembled together, with the rim 1 mounted on the outer end face of the brake drum 2. When the vehicle is moving or braking, the tire, rim 1, brake drum 2, and hub 3 rotate around a common axis. The fan blades 9 on the hub 3 rotate synchronously, driving air to generate a cooling airflow laterally from the outside of the wheel to the inside of the vehicle. This cools the braking system, improving braking efficiency. The cooling air flows through the first ventilation and heat dissipation channel (rim ventilation hole 5 → first brake drum ventilation hole 6 → hub ventilation hole 8 → brake system ventilation hole 12) and the second ventilation and heat dissipation channel (rim ventilation hole 5 → second brake drum ventilation hole 7 → brake system ventilation hole 12) through the braking mechanism, efficiently cooling the braking system to ensure stable braking performance and prevent brake system failure. The cooling fan blades generating the cooling air in the left and right brake system devices are symmetrical. This significantly improves braking system safety and prevents brake system failure.

[0047] The present invention and its embodiments have been described above. This description is not restrictive, and the embodiments shown throughout the text are only one of the embodiments of the present invention. The actual structure is not limited to this. In conclusion, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit of the present invention, such design should fall within the protection scope of the present invention.

Claims

1. A drum-type automatic air-cooled braking device, comprising a wheel rim (1), a brake drum (2), a wheel hub (3), and a support plate (4), wherein one side of the wheel rim (1) is connected to the brake drum (2), and the side of the brake drum (2) away from the wheel rim (1) is connected to the wheel hub (3) and the support plate (4) respectively; characterized in that, The rim (1) has multiple sets of rim ventilation holes (5); The brake drum (2) has a first brake drum ventilation hole (6) and a second brake drum ventilation hole (7) with multiple sets of connecting rim ventilation holes (5); The hub (3) has multiple sets of hub ventilation holes (8) that connect to the first brake drum ventilation hole (6); The bearing plate (4) has multiple sets of brake mechanism ventilation holes (12) that can connect the hub ventilation holes (8) and the second brake drum ventilation holes (7); The hub (3) is provided with multiple sets of fan blades (9).

2. The drum-type automatic air-cooled braking device according to claim 1, characterized in that: The rim ventilation hole (5), the first brake drum ventilation hole (6), the hub ventilation hole (8), and the brake mechanism ventilation hole (12) form the first ventilation and heat dissipation channel.

3. The drum-type automatic air-cooled braking device according to claim 1, characterized in that: The rim ventilation hole (5), the second brake drum ventilation hole (7), and the brake mechanism ventilation hole (12) form a second ventilation and heat dissipation channel.

4. The drum-type automatic air-cooled braking device according to claim 1, characterized in that: The multiple sets of fan blades (9) are arranged in a circular array with the center of the hub (3) as the axis.

5. The drum-type automatic air-cooled braking device according to claim 1, characterized in that: The rim (1), brake drum (2) and hub (3) are connected and fixed by tire bolts (10). The rim (1) and brake drum (2) are provided with mounting holes that cooperate with the tire bolts (10). The tire bolts (10) are fixedly installed on the hub (3).

6. The drum-type automatic air-cooled braking device according to claim 1, characterized in that: The rim ventilation holes (5), the first brake drum ventilation holes (6), the second brake drum ventilation holes (7), and the hub ventilation holes (8) are all arranged in a circular array with the center of the rim (1) as the axis.

7. The drum-type automatic air-cooled braking device according to claim 1, characterized in that: A hub cap (11) is installed on one side of the hub (3).

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