Rail wheel body with heat dissipation structure

Abstract

The utility model discloses a track wheel body with a heat dissipation structure, which relates to the technical field of track wheel bodies and comprises a rim, a first radial plate is fixedly connected in the rim, a connecting shaft sleeve is mounted in the first radial plate, a reinforcing plate is fixedly connected to the inner side of the first radial plate, and a second radial plate is fixedly connected to one end of the reinforcing plate. Compared with a traditional combined design of a solid or simple perforated radial plate, two groups of first radial plates, two groups of second radial plates and a reinforcing plate, on the premise that the supporting strength between the rim and the connecting shaft sleeve is guaranteed, the thickness of a single supporting structure is reduced, a heat accumulation area caused by thickness concentration originally is converted into a multi-channel air flow circulation space, and the heat accumulation area is reduced. A flow guide channel penetrating through the radial direction of the wheel body is constructed through the gaps formed between the adjacent reinforcing plates and the staggered layout of the radial plates, fluid mechanics simulation shows that the speed of airflow passing through the area is increased, formation of a vortex area is effectively reduced, and the convection heat dissipation efficiency is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of rail wheel body technology, and in particular to a rail wheel body with a heat dissipation structure. Background Technology

[0002] As the core structural component of rail transit vehicle wheels, the wheel body mainly consists of the rim, which is in direct contact with the track, and the spokes connecting the hub. It is made of high-strength steel through forging or casting. Its functions include bearing the weight of the vehicle itself and its load, transmitting driving and braking forces to propel the vehicle forward or achieve braking, guiding the vehicle along the track and improving curve clearance through flange guidance and tread profile design, buffering vibrations and impacts caused by track irregularities, and ensuring roundness and dynamic balance through precision machining to ensure operational stability. Its design and performance are directly related to driving safety, operating efficiency, and economy.

[0003] However, in the existing technology, the spokes of rail wheels are mostly designed with solid plates or simple structures with only a few regular round holes for heat dissipation. Although this design can meet the basic mechanical support requirements, it severely restricts the heat dissipation efficiency. The effective heat dissipation area of ​​solid spokes is small. Even with perforated designs, the hole diameter and hole spacing cannot be further optimized because the strength of the spokes must be taken into account. This results in extremely limited usable heat dissipation channels. Continuous heat accumulation leads to the deterioration of the wheel material properties. Long-term operation may result in plastic deformation of the spokes or even fatigue cracks. Temperature gradients in different areas of the wheel cause thermal stress concentration, which can easily lead to thermal fatigue cracks at stress concentration points such as the edges of the spoke holes and transition fillets. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing a rail wheel body with a heat dissipation structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a rail wheel body with a heat dissipation structure, including a rim, a first spoke plate fixedly connected inside the rim, a connecting bushing installed inside the first spoke plate, a reinforcing plate fixedly connected to the inner side of the first spoke plate, a second spoke plate fixedly connected to one end of the reinforcing plate, the second spoke plate being fixedly connected to the connecting bushing inside, a first heat dissipation groove provided on the side of the first spoke plate, and a second heat dissipation groove provided on the side of the second spoke plate.

[0006] Preferably, two No. 1 spokes are fixedly connected to the inner side of the rim, and the two No. 1 spokes are symmetrically distributed on the inner side of the rim.

[0007] Preferably, the inner side of the first spoke has a ring array of multiple reinforcing plates, which are inclinedly arranged inside the first spoke.

[0008] Preferably, the first spoke has a ring array of multiple first heat dissipation slots on its side.

[0009] Preferably, the second-side radial plate has a ring array of multiple second-side heat dissipation slots.

[0010] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0011] 1. In this utility model, compared with traditional solid or simple perforated spokes, the combination design of two sets of No. 1 spokes, No. 2 spokes and reinforcing plates reduces the thickness of a single support structure while ensuring the support strength between the rim and the connecting bushing. This transforms the heat accumulation area caused by the concentrated thickness into a multi-channel airflow space. The gaps formed between adjacent reinforcing plates and the staggered layout between spokes create a guide channel that runs through the radial direction of the wheel body. Fluid dynamics simulation shows that this increases the speed of airflow through this area, effectively reduces the formation of vortex areas, and significantly improves the convective heat dissipation efficiency.

[0012] 2. In this utility model, the reinforcing plate of the annular array and the differentiated first and second spokes form a stable triangular support system, which can evenly distribute the vibration load during wheel operation to the connecting bushing, reducing the risk of structural fatigue caused by vibration. At the same time, the reduction in the thickness of the support structure avoids the problem of thermal resistance concentration caused by material accumulation in traditional designs, allowing the heat generated by rim braking to be quickly conducted to the outer airflow through the thin-walled structure of the spokes and the reinforcing plate, effectively suppressing the generation of thermal fatigue cracks at the edges of the spoke holes and transition fillets caused by thermal stress concentration, extending the service life of the wheel and improving the stability and safety during high-speed operation.

[0013] 3. In this utility model, the No. 1 heat dissipation groove and the No. 2 heat dissipation groove are distributed in a ring array on the surface of the corresponding spokes, which increases the effective heat dissipation area of ​​the No. 1 and No. 2 spokes compared with traditional solid spokes. When the wheel rotates, the groove structure can cut the air to form turbulence, destroy the boundary layer airflow adhesion, and enhance convective heat transfer, thereby quickly dissipating the heat transferred from the rim and connecting bushing to the spokes. During the rotation of the wheel, the angle of attack formed by the inclined reinforcing plate surface and the airflow direction can generate a pumping effect similar to a fan, forcibly driving the air to flow along the inner side of the rim towards the connecting bushing, constructing a directional heat dissipation airflow channel. This not only accelerates the removal of heat from the spoke surface, but also washes away the dust accumulated in the No. 1 and No. 2 heat dissipation grooves, avoiding dust accumulation that affects heat dissipation efficiency. Attached Figure Description

[0014] Figure 1 This utility model provides a first three-dimensional structural diagram of a rail wheel body with a heat dissipation structure;

[0015] Figure 2 This utility model provides a second three-dimensional structural diagram of a rail wheel body with a heat dissipation structure;

[0016] Figure 3 This utility model presents a three-dimensional structural diagram of the first heat dissipation groove in the wheel body of a rail wheel with a heat dissipation structure.

[0017] Legend: 1. Wheel rim; 2. First spoke; 3. Reinforcing plate; 4. Second spoke; 5. Connecting bushing; 6. First heat dissipation slot; 7. Second heat dissipation slot. Detailed Implementation

[0018] 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.

[0019] 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.

[0020] Example 1: As Figure 1 and Figure 2 As shown, this utility model provides a rail wheel body with a heat dissipation structure, including a rim 1. A first spoke 2 is fixedly connected inside the rim 1. A connecting bushing 5 is installed inside the first spoke 2. A reinforcing plate 3 is fixedly connected to the inner side of the first spoke 2. A second spoke 4 is fixedly connected to one end of the reinforcing plate 3. The second spoke 4 is fixedly connected to the connecting bushing 5. A first heat dissipation groove 6 is provided on the side of the first spoke 2. A second heat dissipation groove 7 is provided on the side of the second spoke 4. Two first spokes 2 are fixedly connected to the inner side of the rim 1. The two first spokes 2 are symmetrically distributed on the inner side of the rim 1.

[0021] The specific settings and functions of this embodiment are described in detail below. Two first spokes 2 and two second spokes 4 are set on the inner side of the rim 1, and multiple reinforcing plates 3 in a ring array establish a stable support between the rim 1 and the connecting bushing 5, ensuring the overall stability during use. The two sets of first spokes 2, reinforcing plates 3 and second spokes 4 provide stable support between the rim 1 and the connecting bushing 5, ensuring the support strength while reducing the thickness of individual structures of the support structure between the rim 1 and the connecting bushing 5, avoiding heat concentration, and facilitating airflow for heat dissipation.

[0022] On the one hand, compared with traditional solid or simply perforated spokes, the combination design of two sets of No. 1 spokes 2, No. 2 spokes 4 and reinforcing plates 3, while ensuring the support strength between the rim 1 and the connecting bushing 5, reduces the thickness of a single support structure, transforming the heat accumulation area caused by the concentrated thickness into a multi-channel airflow space. The gaps formed between adjacent reinforcing plates 3 and the staggered layout between spokes construct a guide channel that runs through the radial direction of the wheel body. Fluid dynamics simulation shows that this increases the speed of airflow through this area, effectively reduces the formation of vortex areas, and significantly improves the convective heat dissipation efficiency.

[0023] On the other hand, the reinforcing plate 3 of the ring array, together with the differentiated first spoke 2 and second spoke 4, forms a stable triangular support system, which can evenly distribute the vibration load during wheel operation to the connecting bushing 5, reducing the risk of structural fatigue caused by vibration. At the same time, the reduction in the thickness of the support structure avoids the problem of thermal resistance concentration caused by material accumulation in traditional designs, allowing the heat generated by the braking of the rim 1 to be quickly conducted to the outer airflow through the thin-walled structure of the spokes and the reinforcing plate 3. This effectively suppresses the generation of thermal fatigue cracks at the edges of the spoke holes and transition fillets caused by thermal stress concentration, extends the service life of the wheel, and improves the stability and safety during high-speed operation.

[0024] Example 2: Figures 1-3 As shown, there are multiple reinforcing plates 3 arranged in a ring array on the inner side of the first spoke 2. The reinforcing plates 3 are inclinedly arranged on the inner side of the first spoke 2. There are multiple heat dissipation slots 6 arranged in a ring array on the side of the first spoke 2. There are multiple heat dissipation slots 7 arranged in a ring array on the side of the second spoke 4.

[0025] The overall effect of this embodiment is that by arranging the first heat dissipation groove 6 in a ring on the surface of the first spoke 2, the heat dissipation efficiency of the first spoke 2 is improved. Similarly, by arranging the second heat dissipation groove 7, the heat dissipation performance of the second spoke 4 is improved, thereby dissipating heat from the rim 1 and the connecting bushing 5. Furthermore, by using the inclined reinforcing plate 3, a fan effect is formed between the rim 1 and the connecting bushing 5, which accelerates the airflow and improves the overall heat dissipation effect during the rotation of the rim 1.

[0026] On the one hand, the No. 1 heat dissipation slot 6 and the No. 2 heat dissipation slot 7 are distributed on the surface of the corresponding spokes in a ring array, which increases the effective heat dissipation area of ​​the No. 1 spoke 2 and the No. 2 spoke 4 compared with the traditional solid spokes. The channel structure can cut the air to form turbulence when the wheel rotates, destroy the boundary layer airflow adhesion, and enhance convective heat transfer, thereby quickly dissipating the heat transferred from the rim 1 and the connecting bushing 5 to the spokes.

[0027] On the other hand, the angle of attack (usually 15°-30°) formed by the inclined reinforcing plate 3 and the airflow direction during the rotation of the wheel can generate a pumping effect similar to a fan, forcing the air to flow along the inner side of the rim 1 towards the connecting bushing 5, thus constructing a directional heat dissipation airflow channel. This not only accelerates the removal of heat from the surface of the spokes, but also washes away the dust accumulated in the first heat dissipation slot 6 and the second heat dissipation slot 7, preventing dust accumulation from affecting the heat dissipation efficiency.

[0028] In addition, the annular array layout of the No. 1 heat dissipation slot 6 and the No. 2 heat dissipation slot 7, together with the inclined support structure of the reinforcing plate 3, forms a mechanical-heat dissipation synergistic design. The stress release effect of the slot can reduce the risk of thermal deformation of the spokes, while the inclination angle of the reinforcing plate 3 ensures the support strength of the rim 1 and the connecting bushing 5, and achieves dual optimization of heat dissipation efficiency and structural stability.

[0029] The usage and working principle of this device are as follows: Two No. 1 spokes 2 and two No. 2 spokes 4 are set on the inner side of the rim 1, and multiple reinforcing plates 3 in a ring array establish a stable support between the rim 1 and the connecting bushing 5, ensuring the overall stability during use. The two sets of No. 1 spokes 2, reinforcing plates 3 and No. 2 spokes 4 provide stable support between the rim 1 and the connecting bushing 5, ensuring the support strength while reducing the thickness of individual structures of the support structure between the rim 1 and the connecting bushing 5, thus avoiding heat concentration.

[0030] By arranging the first heat dissipation groove 6 in a ring on the surface of the first spoke 2, the heat dissipation efficiency of the first spoke 2 is improved. Similarly, the heat dissipation performance of the second spoke 4 is improved by the second heat dissipation groove 7, thereby dissipating heat from the rim 1 and the connecting bushing 5. Furthermore, by using the inclined reinforcing plate 3, a fan effect is formed between the rim 1 and the connecting bushing 5, which accelerates the airflow during the rotation of the rim 1.

[0031] The above are merely preferred embodiments of this utility model and are not intended to limit the 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 this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A rail wheel body with heat dissipation structure, comprising a rim (1), the inside of the rim (1) is fixedly connected with a first spoke plate (2), the inside of the first spoke plate (2) is provided with a connecting shaft sleeve (5), characterized in that: A reinforcing plate (3) is fixedly connected to the inner side of the first spoke (2), and a second spoke (4) is fixedly connected to one end of the reinforcing plate (3). The second spoke (4) is fixedly connected to the connecting bushing (5). A first heat dissipation groove (6) is provided on the side of the first spoke (2), and a second heat dissipation groove (7) is provided on the side of the second spoke (4).

2. The railway wheel body with a heat dissipation structure according to claim 1, characterized in that: Two No. 1 spokes (2) are fixedly connected to the inner side of the rim (1), and the two No. 1 spokes (2) are symmetrically distributed on the inner side of the rim (1).

3. The railcar wheel body with heat dissipation structure according to claim 1, characterized in that: The inner ring array of the first spoke (2) has multiple reinforcing plates (3), which are inclined inside the first spoke (2).

4. The railcar wheel body with heat dissipation structure according to claim 1, characterized in that: The first radiator (2) has multiple first heat dissipation slots (6) in a ring array on its side.

5. The railcar wheel body with heat dissipation structure according to claim 1, characterized in that: The second radiator (4) has multiple second heat dissipation slots (7) in a ring array on its side.

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