A new energy truck brake drum

Abstract

This utility model provides a brake drum for a new energy truck, relating to the technical field of braking systems for new energy trucks, including a heat dissipation assembly. The heat dissipation assembly includes a brake drum body, with multiple sets of flow grooves arranged on the outer surface of the brake drum body to increase airflow. Multiple sets of ventilation grooves are also arranged on the outer surface of the brake drum body. This utility model, through the function of the heat dissipation assembly, can quickly dissipate frictional heat by enhancing air convection. The ventilation grooves and reinforcing ribs achieve uniform heat distribution in the drum body. Simultaneously, structural reinforcement suppresses thermal stress deformation, and a dustproof plate keeps the brake gap clean. This not only avoids problems such as uneven heating, deformation, or impurity accumulation leading to brake wear and jamming, but also continuously maintains a stable contact state of the friction pair and the accuracy of braking torque output, effectively ensuring the braking stability of new energy trucks under high-load conditions.

Description

Technical Field

[0001] This utility model relates to the field of braking system technology for new energy trucks, and in particular to a brake drum for new energy trucks. Background Technology

[0002] The electrification transformation of new energy trucks has placed higher demands on braking systems. On the one hand, the high weight of the battery pack leads to increased vehicle inertia, and the heat load on the brake drum increases significantly during frequent braking. A certain industry customer standard requires the number of thermal cracks in the brake drum, but traditional gray cast iron drums are difficult to meet the standard for a long time under high load conditions. On the other hand, although the widespread application of regenerative braking systems has reduced the frequency of mechanical braking, once mechanical braking is triggered, the brake drum needs to absorb higher energy in a short period of time, which puts a severe test on heat dissipation performance and resistance to thermal fatigue. In addition, there is a contradiction between the lightweight requirements of new energy trucks and the traditional materials of brake drums, and lightweight materials are urgently needed to replace them.

[0003] The existing brake drums of new energy trucks are mainly integrally cast, which not only has a simple and compact structure and low manufacturing cost, but also provides a large braking torque.

[0004] However, existing integral cast brake drums are difficult to adapt to the high-load braking requirements of new energy trucks. In terms of heat dissipation, although the outer surface is reinforced with ribs, the layout of the ribs is not optimized due to the limitations of the casting process. This makes it impossible to form an efficient airflow circulation channel, and the airflow is easily obstructed. The heat dissipation effect on the core friction area is weak, and the heat dissipation efficiency is limited. Moreover, during braking, the frictional heat is concentrated in a specific contact area, while the heat transfer in other parts of the drum is delayed, resulting in significant temperature differences. This causes local thermal expansion imbalance, leading to thermal stress concentration, which in turn causes drum deformation and damages the uniformity of the friction pair clearance. This not only causes problems such as uneven brake wear and jamming, but also affects braking stability due to cracking. Utility Model Content

[0005] This invention utilizes a heat dissipation component to rapidly dissipate frictional heat through enhanced air convection. Ventilation grooves and reinforcing ribs ensure uniform heat distribution within the drum body. Structural reinforcement suppresses thermal stress deformation, and a dustproof plate maintains cleanliness of the brake gap. This not only avoids problems such as uneven heating, deformation, or impurity accumulation leading to brake wear and jamming, but also maintains stable contact between the friction pairs and accurate braking torque output. This effectively ensures the braking stability of new energy trucks under high-load conditions, thus solving the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a brake drum for a new energy truck, including a heat dissipation component;

[0007] The heat dissipation assembly includes a brake drum body. Multiple sets of flow grooves are arranged on the outer surface of the brake drum body to increase airflow. Multiple sets of ventilation grooves are arranged on the outer surface of the brake drum body to evenly distribute heat. Reinforcing ribs are fixedly installed on the inner wall of each set of ventilation grooves to improve bending stiffness.

[0008] Preferably, a dustproof plate is fixedly installed on the outer surface of the brake drum body to prevent dust from entering.

[0009] Preferably, heat dissipation fins are fixedly installed on the inner surface of the brake drum body, and the heat dissipation fins are used to increase the heat dissipation area.

[0010] Preferably, the heat dissipation component is internally provided with a stress component;

[0011] The stress assembly includes a fixed ring, and two sets of locking blocks are symmetrically fixedly connected to the outer surface of the fixed ring. A first spring is provided on the outer surface of each set of locking blocks.

[0012] Preferably, a limiting plate is provided at one end of each of the two sets of first springs, and the two sets of limiting plates are used to limit the springs.

[0013] Preferably, a second spring is fixedly installed on the outer surface of both sets of limiting plates, and the second spring is used to disperse thermal stress.

[0014] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0015] 1. In this utility model, the heat dissipation component can quickly dissipate frictional heat by enhancing air convection. The ventilation groove and reinforcing ribs can achieve uniform heat distribution in the drum body. At the same time, the structural reinforcement can suppress thermal stress deformation, and the dustproof plate can keep the brake gap clean. This not only avoids problems such as brake wear and jamming caused by uneven heating, deformation or impurity accumulation, but also maintains the stable contact state of the friction pair and the accuracy of braking torque output, effectively ensuring the braking stability of new energy trucks under high load conditions.

[0016] 2. In this utility model, a dual elastic buffering mechanism is formed by the primary buffering of the first spring and the secondary stress dispersion of the second spring, which can disperse the local thermal stress peak to a larger area, thereby significantly weakening the stress concentration effect and further reducing the risk of deformation and cracking of the drum body caused by repeated thermal expansion and contraction. Attached Figure Description

[0017] Figure 1 This utility model provides a front view structural diagram of a brake drum for a new energy truck;

[0018] Figure 2 This utility model provides a schematic diagram of a heat dissipation component structure for a brake drum of a new energy truck.

[0019] Figure 3 This utility model provides a plan view of the stress component structure of a brake drum for a new energy truck;

[0020] Figure 4 This utility model presents a schematic diagram of a stress component for a brake drum of a new energy truck.

[0021] Legend: 1. Heat dissipation component; 101. Brake drum body; 102. Flow groove; 103. Ventilation groove; 104. Reinforcing rib; 105. Dustproof plate; 106. Heat dissipation fins; 2. Stress component; 201. Fixing ring; 202. Locking block; 203. First spring; 204. Limiting plate; 205. Second spring. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0024] Example 1: Refer to Figure 1 - Figure 4 As shown: A brake drum for a new energy truck, including a heat dissipation component 1;

[0025] The heat dissipation assembly 1 includes a brake drum body 101. Multiple sets of flow grooves 102 are arranged on the outer surface of the brake drum body 101 to increase airflow. Multiple sets of ventilation grooves 103 are arranged on the outer surface of the brake drum body 101 to distribute heat evenly. Reinforcing ribs 104 are fixedly installed on the inner wall of each ventilation groove 103 to improve bending stiffness. A dustproof plate 105 is fixedly installed on the outer surface of the brake drum body 101 to prevent dust from entering. Heat dissipation fins 106 are fixedly installed on the inner wall of the brake drum body 101 to increase the heat dissipation area.

[0026] In this embodiment, the brake drum of the new energy truck uses the heat dissipation component 1 as the core functional carrier. Its main body is the brake drum body 101, which adopts a high-strength and lightweight structural design adapted to the working conditions of new energy trucks. The outer surface of the brake drum body 101 has multiple sets of flow grooves 102 distributed in a ring array. The grooves adopt a streamlined curved surface design, which can guide the airflow during driving to pass quickly along the surface of the drum body. By enhancing the air convection effect, the heat on the surface of the drum body is removed, effectively optimizing the airflow path. In the area between the flow grooves 102, multiple sets of ventilation channels are simultaneously opened on the surface of the drum body. Air grooves 103 are evenly distributed around the drum body along its axial direction. The depth and width of the grooves have been optimized through thermal simulation to diffuse heat generated in the friction area of ​​the drum body to the non-friction area, reducing local heat accumulation and alleviating temperature concentration during braking. Each set of air grooves 103 has an integrally formed reinforcing rib 104 on its inner wall, arranged longitudinally along the length of the air groove 103. This not only strengthens the overall bending stiffness of the drum body through structural reinforcement but also acts as a thermal bridge during heat transfer, aiding in uniform heat distribution and reducing thermal stress. To mitigate the risk of deformation, a dustproof plate 105 is fixedly installed on the outer surface of the brake drum body 101, corresponding to key areas of the braking components. The dustproof plate 105 is made of wear-resistant and corrosion-resistant material, with its edges tightly fitted to the drum surface. This effectively prevents dust and mud from entering the brake gap inside the drum during driving, avoiding the accumulation of impurities that could affect braking accuracy. The inner wall of the brake drum body 101 is evenly covered with radially distributed heat dissipation fins 106. These fins are densely arranged in thin sheets, significantly increasing the contact area between the friction surface and the air, thus rapidly transferring the heat generated by braking friction to the outside of the drum. The drum, together with the flow groove 102 and ventilation groove 103 on the outer surface, forms a coordinated internal and external heat dissipation system, further improving the overall heat dissipation efficiency. Under the action of the heat dissipation component 1, it can quickly dissipate frictional heat by enhancing air convection, achieving uniform heat distribution in the drum body. At the same time, it suppresses thermal stress deformation through structural reinforcement, thereby not only avoiding problems such as brake wear and jamming caused by uneven heating, deformation or impurity accumulation, but also continuously maintaining the stable contact state of the friction pair and the accuracy of braking torque output, effectively ensuring the braking stability of new energy trucks under high load conditions.

[0027] Example 2: According to Figure 1 - Figure 4 As shown: Stress component 2 is installed inside heat dissipation component 1;

[0028] The stress assembly 2 includes a fixed ring 201. Two sets of locking blocks 202 are symmetrically fixedly connected to the outer surface of the fixed ring 201. A first spring 203 is provided on the outer surface of each set of locking blocks 202. A limiting plate 204 is provided at one end of each set of first springs 203. The two sets of limiting plates 204 are used to limit the springs. A second spring 205 is fixedly installed on the outer surface of the two sets of limiting plates 204. The second spring 205 is used to disperse thermal stress.

[0029] In this embodiment, the core of the stress assembly 2 is a fixed ring 201, which is adapted to the internal structure of the brake drum body 101. Two sets of locking blocks 202 are symmetrically distributed and fixedly connected to the outer surface of the fixed ring 201. A first spring 203 is provided on the outer surface of each set of locking blocks 202. One end of the spring is elastically connected to the locking block 202, and the other end is connected to a limiting plate 204. The limiting plate 204 provides stable support for the first spring 203 through structural limiting, preventing the spring from shifting during the stress process. The outer surfaces of the two sets of limiting plates 204 are fixedly installed. There is a second spring 205, which is elastically extended along the radial direction of the drum body. When the drum body generates thermal stress due to temperature changes, it can absorb and disperse local stress through its own elastic deformation. Combined with the buffering effect of the first spring 203, it further weakens the thermal stress concentration effect and reduces the risk of deformation of the drum body due to stress overload. Under the action of stress component 2, a dual elastic buffering mechanism can be formed, which can disperse the local thermal stress peak to a larger area, significantly weaken the stress concentration effect, and further reduce the risk of deformation and cracking of the drum body due to repeated thermal expansion and contraction.

[0030] Working principle: In terms of heat dissipation optimization, the outer surface of the brake drum body 101 has multiple sets of streamlined flow grooves 102 arranged in a ring array. These grooves guide the airflow along the drum surface quickly, effectively removing surface heat by enhancing air convection and optimizing the airflow path. Multiple sets of ventilation grooves 103 are simultaneously opened between the flow grooves 102, evenly distributed around the drum axis. The depth and width of the grooves are optimized through thermal simulation, allowing heat from the friction area to diffuse to the non-friction area, reducing local accumulation. The inner wall of each ventilation groove 103 has integrally formed reinforcing ribs 104, arranged longitudinally along the groove length, which facilitates airflow... The overall bending stiffness of the drum body is improved through structural reinforcement, and it also acts as a thermal bridge to assist in the uniform distribution of heat and reduce the risk of thermal stress deformation. In addition, a dustproof plate 105 made of wear-resistant and corrosion-resistant material is fixedly installed on the key areas of the outer surface of the body. The edge is tightly fitted to the drum body to prevent dust and dirt from entering the braking gap and avoid impurities affecting accuracy. The inner surface wall is uniformly distributed with radial thin sheet-like heat dissipation fins 106, which greatly increases the contact area between the friction surface and the air, and quickly conducts braking heat to the outside. Together with the flow groove 102 and the ventilation groove 103 on the outer surface, it forms an internal and external synergistic heat dissipation system, which significantly improves the overall heat dissipation efficiency. The heat dissipation component 1 contains The unit also integrates a stress-relief component 2 to address thermal stress issues. Its core is a fixed ring 201 that is fitted and installed inside the brake drum body 101. Two sets of locking blocks 202 are symmetrically fixed along the diameter of the outer surface of the ring. A first spring 203 is sleeved on the outer surface of the locking blocks 202. One end of the spring is elastically connected to the locking block 202, and the other end is connected to an arc-shaped limiting plate 204. The limiting plate 204 provides stable support for the first spring 203 through structural limiting, effectively preventing the spring from shifting under stress. A second spring 205 is fixedly installed on the outer surface of both sets of limiting plates 204, extending elastically along the radial direction of the drum body. When the drum body generates heat due to changes in braking temperature... Under stress, the second spring 205 absorbs and disperses local stress through its own elastic deformation. Combined with the buffering effect of the first spring 203, it can significantly weaken the thermal stress concentration effect and reduce the risk of drum deformation caused by stress overload. Through the airflow optimization, heat diffusion, area enhancement and dust protection of the heat dissipation component 1, and the dual elastic buffering design of the stress component 2, the brake drum can efficiently dissipate braking heat and avoid local high temperature accumulation, and buffer the stress impact caused by thermal expansion and contraction. It fundamentally solves the problems of insufficient heat dissipation and thermal deformation of traditional brake drums, and ensures the braking stability of new energy trucks under high load conditions.

[0031] By following the steps outlined above, you can complete the use of the brake drum on a new energy truck.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A brake drum for a new energy truck, characterized in that: Including heat dissipation components (1); The heat dissipation assembly (1) includes a brake drum body (101). Multiple sets of flow grooves (102) are arranged on the outer surface of the brake drum body (101). The multiple sets of flow grooves (102) are used to increase air flow. Multiple sets of ventilation grooves (103) are arranged on the outer surface of the brake drum body (101). The multiple sets of ventilation grooves (103) are used to evenly distribute heat. Reinforcing ribs (104) are fixedly installed on the inner wall of the multiple sets of ventilation grooves (103). The multiple sets of reinforcing ribs (104) are used to improve bending stiffness.

2. The brake drum for new energy trucks according to claim 1, characterized in that: A dustproof plate (105) is fixedly installed on the outer surface of the brake drum body (101) to prevent dust from entering.

3. The brake drum for new energy trucks according to claim 2, characterized in that: The inner surface of the brake drum body (101) is fixedly equipped with heat dissipation fins (106), which are used to increase the heat dissipation area.

4. The brake drum for new energy trucks according to claim 1, characterized in that: The heat dissipation component (1) is provided with a stress component (2) inside; The stress component (2) includes a fixed ring (201), and two sets of locking blocks (202) are symmetrically fixedly connected to the outer surface of the fixed ring (201). The outer surface of the two sets of locking blocks (202) is provided with a first spring (203).

5. The brake drum for new energy trucks according to claim 4, characterized in that: Each of the two sets of first springs (203) is provided with a limiting plate (204) at one end, and the two sets of limiting plates (204) are used to limit the springs.

6. The brake drum for new energy trucks according to claim 5, characterized in that: A second spring (205) is fixedly installed on the outer surface of the two sets of limiting plates (204), and the second spring (205) is used to disperse thermal stress.

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