Brake drum heat conduction structure

Abstract

The utility model relates to a heat conduction structure of a brake drum. The problems that in the prior art, a brake drum is difficult to rapidly cool and preheat according to actual conditions, and the use flexibility is poor are solved. The brake drum comprises a brake drum body, an annular circumferential heat conduction structure is arranged on the circumferential outer side of the brake drum body, a separated heat conduction assembly is arranged between the circumferential heat conduction structure and the circumferential outer wall of the brake drum body, and a heat exchange ring body making contact with the separated heat conduction assembly to achieve heat conduction is arranged on the circumferential outer wall of the brake drum body. The two ends of the brake drum body are provided with flow guide structures used for guiding liquid into the separated heat conduction assemblies. The brake drum cooling and preheating device has the advantages that the brake drum can be rapidly cooled and preheated according to actual use conditions, the use effect is good, and flexibility is good.

Description

Technical Field

[0001] The utility model relates to the technical field of brake components, in particular to a brake drum heat conduction structure. Background Art

[0002] Trucks typically use drum brakes, or brake drums, for braking. When braking, the brake shoes rub against the drum, converting the vehicle's kinetic energy into heat. This heats the drum, causing it to heat up. Excessively high temperatures can cause brake failure, which can easily lead to traffic accidents. Existing brake drums primarily dissipate heat to the surrounding air. However, air has a low specific heat capacity and density, resulting in a small heat capacity and poor thermal conductivity, which cannot effectively suppress the rise in brake drum temperature. Furthermore, existing brake drums are difficult to cool quickly and effectively, and when the drum is exposed to low temperatures for extended periods, they cannot quickly achieve cold-start braking. This makes it difficult to quickly cool and preheat the drum based on actual conditions, resulting in limited flexibility.

[0003] To address the shortcomings of existing technologies, researchers have conducted extensive research and proposed various solutions. For example, a Chinese patent document discloses a spiral heat dissipation brake drum [CN202111231409.0], which includes a drum body with a reinforcement ring on one side, a heat dissipation sleeve on the outside of the drum body, a thermal conductive agent between the drum body and the heat dissipation sleeve, a cavity within the heat dissipation sleeve, and a phase change energy storage material within the cavity. The heat dissipation sleeve is provided with multiple spiral heat dissipation fins on the outside of the heat dissipation sleeve, so that when the drum body rotates in the forward direction, the spiral heat dissipation fins can generate airflow across the surface of the heat dissipation sleeve.

[0004] The above solution solves the problem of poor thermal conductivity of the brake drum in the prior art to a certain extent, but the solution still has many shortcomings, such as: it is difficult to quickly cool down and preheat the brake drum according to actual conditions, and the flexibility of use is poor. Summary of the Invention

[0005] The purpose of the utility model is to provide a brake drum heat conduction structure in view of the above problems.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a brake drum heat-conducting structure, including a brake drum main body, a circumferential heat-conducting structure arranged in an annular shape is provided on the circumferential outer side of the brake drum main body, a separated heat-conducting component is provided between the circumferential heat-conducting structure and the circumferential outer wall of the brake drum main body, and a heat exchange ring body is provided on the circumferential outer wall of the brake drum main body for contacting the separated heat-conducting component to realize heat conduction, and a flow guide structure for introducing liquid into the separated heat-conducting component is provided at both ends of the brake drum main body.

[0007] In the above-mentioned brake drum heat conduction structure, the separated heat conduction component includes a heat conduction cavity arranged between the heat exchange ring and the circumferential heat conduction structure, and a heat insulation part arranged in a ring shape is provided in the middle of the heat conduction cavity. A plurality of air guide channels are provided in the heat insulation part, and the air guide channels extend toward the inner wall of the heat exchange ring and are interconnected with the active circumferential inner side of the brake drum body.

[0008] In the above-mentioned brake drum heat conduction structure, a heat conduction sub-cavity is formed in the heat conduction cavity and on one side of the insulation part, and a cooling sub-cavity is formed on the other side. The cooling sub-cavity is provided with a number of annular cooling fins at equal intervals, and the heat conduction sub-cavity is provided with a number of annular heat conduction fins at equal intervals.

[0009] In the above-mentioned heat-conducting structure of the brake drum, the flow-conducting structure includes a cooling liquid introduction mechanism penetrating the heat-conducting sub-cavity, and a heating liquid introduction mechanism penetrating the cooling sub-cavity.

[0010] In the above-mentioned brake drum heat conduction structure, the coolant introduction mechanism includes a coolant introduction hole arranged at one end of the brake drum main body, the coolant introduction hole is connected to a first annular guide pipe arranged at one end of the heat conduction chamber, and a plurality of coolant diversion pipes interconnected with the first annular guide pipe are provided in the heat conduction chamber, a plurality of coolant overflow holes are provided on the coolant diversion pipe, and the coolant diversion pipe is passed through the heat conduction fin and the end portion is positioned on the insulation portion.

[0011] In the above-mentioned brake drum heat conduction structure, the heating liquid introduction mechanism includes a heating liquid introduction hole arranged at the other end of the brake drum body, the heating liquid introduction hole is connected to a second annular guide pipe arranged at one end of the heat conduction chamber, and a plurality of heating liquid diversion pipes interconnected with the second annular guide pipe are provided in the heat conduction chamber, a plurality of heating liquid overflow holes are provided on the heating liquid diversion pipe, and the heating liquid diversion pipe is passed through the cooling fin and the end portion is positioned on the insulation portion.

[0012] In the above-mentioned brake drum heat conduction structure, the circumferential heat conduction structure includes an annular ventilation cavity with a plurality of ventilation holes. One end of the ventilation hole is connected to the outside of the brake drum body, and the other end of the ventilation hole is connected to the annular ventilation cavity.

[0013] In the above-mentioned heat-conducting structure of the brake drum, a plurality of external air guide holes communicating with the air guide channel are provided in the middle of the annular ventilation cavity, and the external air guide holes are communicated with the outside of the brake drum body.

[0014] In the above-mentioned heat conduction structure of the brake drum, both ends of the heat exchange ring extend to the end surfaces of the brake drum body respectively to form end surface heat conduction.

[0015] In the above-mentioned heat-conducting structure of the brake drum, sealing gaskets are respectively provided on both sides of the heat insulating portion, and the inner wall of the heat insulating portion is clamped between the sealing gaskets.

[0016] Compared with the existing technology, the advantages of the present invention are: simple design, more reasonable structure, the brake drum can achieve continuous heat dissipation by liquid cooling and air cooling in a high temperature environment, preventing the brake drum from continuously rising in temperature during braking and causing brake failure; and during cold start braking in a low temperature environment, the brake drum can be effectively preheated to prevent brake failure caused by the brake drum getting stuck, with good use effect and excellent flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 It is a cross-sectional view of the utility model;

[0019] Figure 3 It is a cross-sectional view of the utility model;

[0020] Figure 4 This is a schematic diagram of the end structure of the brake drum body in the present utility model;

[0021] In the figure: brake drum body 1, circumferential heat conduction structure 2, annular ventilation cavity 21, ventilation holes 22, external air guide holes 23, separated heat conduction component 3, heat conduction cavity 31, heat insulation part 32, sealing gasket 321, air guide channel 33, heat conduction sub-cavity 34, cooling sub-cavity 35, cooling fins 36, heat conduction fins 37, heat exchange ring body 4, flow guide structure 5, coolant inlet mechanism 51, coolant inlet hole 511, first annular flow guide pipe 512, coolant diverter pipe 513, coolant overflow hole 514, heating liquid inlet mechanism 52, heating liquid inlet hole 521, second annular flow guide pipe 522, heating liquid diverter pipe 523, heating liquid overflow hole 524. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0023] like Figure 1-4 As shown, a brake drum heat-conducting structure includes a brake drum body 1, a circumferential heat-conducting structure 2 arranged in a ring shape is provided on the circumferential outer side of the brake drum body 1, a separated heat-conducting component 3 is provided between the circumferential heat-conducting structure 2 and the circumferential outer wall of the brake drum body 1, and a heat exchange ring 4 is provided on the circumferential outer wall of the brake drum body 1 for contacting the separated heat-conducting component 3 to achieve heat conduction, and a flow guide structure 5 for introducing liquid into the separated heat-conducting component 3 is provided at both ends of the brake drum body 1.

[0024] Among them, the separated heat-conducting component 3 includes a heat-conducting cavity 31 arranged between the heat exchange ring body 4 and the circumferential heat-conducting structure 2. A heat-conducting portion 32 arranged in a ring shape is provided in the middle of the heat-conducting cavity 31. A plurality of air-conducting channels 33 are provided in the heat-conducting portion 32. The air-conducting channels 33 extend toward the inner wall of the heat exchange ring body 4 and are interconnected with the active circumferential inner side of the brake drum body 1.

[0025] It can be seen that a heat conduction sub-cavity 34 is formed in the heat conduction cavity 31 and located on one side of the insulation part 32, and a cooling sub-cavity 35 is formed on the other side. The cooling sub-cavity 35 is provided with a number of annular cooling fins 36 arranged in sequence and equidistantly, and the heat conduction sub-cavity 34 is provided with a number of annular heat conduction fins 37 arranged in sequence and equidistantly.

[0026] The cooling fins 36 are used to conduct the cold inwardly of the brake drum body 1, and the heating liquid is filled into the cooling chamber 35 to achieve rapid preheating, while the heat conducting fins 37 are used to conduct the heat inwardly of the brake drum body 1, and the cooling liquid is filled into the heat conducting chamber 34 to achieve rapid cooling.

[0027] Furthermore, the flow guiding structure 5 includes a cooling liquid introduction mechanism 51 penetrating the heat conducting sub-cavity 34 , and a heating liquid introduction mechanism 52 penetrating the cooling sub-cavity 35 .

[0028] Furthermore, the coolant introduction mechanism 51 includes a coolant introduction hole 511 arranged at one end of the brake drum main body 1, the coolant introduction hole 511 is connected to a first annular guide pipe 512 arranged at one end of the heat conduction chamber 34, and the heat conduction chamber 34 is provided with a plurality of coolant diversion pipes 513 that are interconnected with the first annular guide pipe 512, and the coolant diversion pipe 513 is provided with a plurality of coolant overflow holes 514, and the coolant diversion pipe 513 is passed through the heat conduction fin 37 and the end is positioned on the insulation part 32.

[0029] The heat-conducting fins 37 are spaced apart from each other and have through holes for the coolant diversion pipes 513 to pass through. The coolant is guided to each coolant diversion pipe 513 through the first annular guide pipe 512 and overflows into the heat-conducting sub-cavity 34 through the coolant overflow hole 514.

[0030] Specifically, the heating liquid introduction mechanism 52 includes a heating liquid introduction hole 521 arranged at the other end of the brake drum body 1, and the heating liquid introduction hole 521 is connected to a second annular guide pipe 522 arranged at one end of the heat conduction chamber 34, and the heat conduction chamber 34 is provided with a plurality of heating liquid diversion pipes 523 that are interconnected with the second annular guide pipe 522, and the heating liquid diversion pipe 523 is provided with a plurality of heating liquid overflow holes 524, and the heating liquid diversion pipe 523 is passed through the cooling fin 36 and the end is positioned on the insulation part 32.

[0031] The cooling fins 36 are spaced apart from each other and have through holes for the heating liquid diversion pipe 523 to pass through. The heating liquid is guided to each heating liquid diversion pipe 523 through the second annular guide pipe 522 and overflows into the cooling sub-cavity 35 through the heating liquid overflow hole 524.

[0032] Specifically, the circumferential heat conduction structure 2 includes an annular ventilation cavity 21 , which is provided with a plurality of ventilation holes 22 . One end of the ventilation hole 22 is connected to the outside of the brake drum body 1 , and the other end of the ventilation hole 22 is communicated with the annular ventilation cavity 21 .

[0033] More specifically, a plurality of external air guide holes 23 communicating with the air guide channel 33 are provided in the middle of the annular ventilation cavity 21 , and the external air guide holes 23 are communicated with the outside of the brake drum body 1 .

[0034] The circumferential heat conduction structure 2 is mainly used for continuous air cooling.

[0035] Specifically, both ends of the heat exchange ring 4 extend to the end surfaces of the brake drum body 1 and form end surface heat conduction, which is used to improve the heat conduction and cooling effect.

[0036] Preferably, sealing gaskets 321 are respectively provided on both sides of the heat insulating portion 32 , and the inner wall of the heat insulating portion 32 is clamped between the sealing gaskets 321 .

[0037] In summary, the principle of this embodiment is as follows: when cooling, continuous heat conduction and heat exchange are performed by utilizing the circumferential heat conduction structure 2; secondly, when the brake generates high temperature, the coolant introduction mechanism 51 is utilized to introduce coolant into the heat conduction chamber 34 to achieve liquid cooling; when the brake drum body 1 is braked at a low temperature during a cold start, heating liquid is introduced into the cooling chamber 35 through the heating liquid introduction mechanism 52 for preheating.

[0038] When switching between coolant and heating fluid, external suction equipment is required for suction.

[0039] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

[0040] Although the terms brake drum body 1, circumferential heat conduction structure 2, annular ventilation cavity 21, ventilation hole 22, external air guide hole 23, partitioned heat conduction assembly 3, heat conduction cavity 31, heat insulation portion 32, sealing gasket 321, air guide channel 33, heat conduction sub-cavity 34, cooling sub-cavity 35, cooling fin 36, heat conduction fin 37, heat exchange ring body 4, flow guide structure 5, coolant introduction mechanism 51, coolant introduction hole 511, first annular flow guide pipe 512, coolant diverter pipe 513, coolant overflow hole 514, heating liquid introduction mechanism 52, heating liquid introduction hole 521, second annular flow guide pipe 522, heating liquid diverter pipe 523, heating liquid overflow hole 524 are frequently used herein, the use of other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations is contrary to the spirit of the present invention.

Claims

1. A brake drum heat conduction structure, comprising a brake drum body (1), characterized in that: The brake drum body (1) is provided with a circumferential heat-conducting structure (2) arranged in an annular shape on the circumferential outer side, a separated heat-conducting component (3) is provided between the circumferential heat-conducting structure (2) and the circumferential outer wall of the brake drum body (1), and a heat exchange ring (4) is provided on the circumferential outer wall of the brake drum body (1) for contacting the separated heat-conducting component (3) to achieve heat conduction, and a flow guide structure (5) for introducing liquid into the separated heat-conducting component (3) is provided at both ends of the brake drum body (1).

2. The brake drum heat conduction structure according to claim 1, characterized in that: The separated heat-conducting assembly (3) includes a heat-conducting cavity (31) arranged between the heat-exchange ring body (4) and the circumferential heat-conducting structure (2), a heat-conducting portion (32) arranged in an annular shape is provided in the middle of the heat-conducting cavity (31), a plurality of air-conducting channels (33) are provided in the heat-conducting portion (32), and the air-conducting channels (33) extend toward the inner wall of the heat-exchange ring body (4) and are interconnected with the active circumferential inner side of the brake drum body (1).

3. The brake drum heat conduction structure according to claim 2, characterized in that: A heat conduction sub-cavity (34) is formed in the heat conduction cavity (31) and located on one side of the heat insulation portion (32), and a cooling sub-cavity (35) is formed on the other side. The cooling sub-cavity (35) is provided with a plurality of cooling fins (36) arranged in an annular shape at equal intervals, and the heat conduction sub-cavity (34) is provided with a plurality of heat conduction fins (37) arranged in an annular shape at equal intervals.

4. The brake drum heat conduction structure according to claim 3, characterized in that: The flow-guiding structure (5) includes a cooling liquid introduction mechanism (51) provided in the heat-conducting sub-cavity (34), and a heating liquid introduction mechanism (52) provided in the cooling sub-cavity (35).

5. The brake drum heat conduction structure according to claim 4, characterized in that: The coolant introduction mechanism (51) includes a coolant introduction hole (511) arranged at one end of the brake drum body (1), the coolant introduction hole (511) is connected to a first annular guide tube (512) arranged at one end of the heat conduction chamber (34), and the heat conduction chamber (34) is provided with a plurality of coolant diversion tubes (513) interconnected with the first annular guide tube (512), the coolant diversion tube (513) is provided with a plurality of coolant overflow holes (514), and the coolant diversion tube (513) is passed through the heat conduction fin (37) and the end portion is positioned on the heat insulation portion (32).

6. The brake drum heat conduction structure according to claim 4, characterized in that: The heating liquid introduction mechanism (52) includes a heating liquid introduction hole (521) arranged at the other end of the brake drum body (1), the heating liquid introduction hole (521) is connected to a second annular guide pipe (522) arranged at one end of the heat conduction chamber (34), and a plurality of heating liquid diversion pipes (523) interconnected with the second annular guide pipe (522) are provided in the heat conduction chamber (34), a plurality of heating liquid overflow holes (524) are provided on the heating liquid diversion pipe (523), and the heating liquid diversion pipe (523) is passed through the cooling fin (36) and the end portion is positioned on the heat insulation portion (32).

7. The brake drum heat conduction structure according to claim 2, characterized in that: The circumferential heat conduction structure (2) includes an annular ventilation cavity (21), and a plurality of ventilation holes (22) are provided on the annular ventilation cavity (21). One end of the ventilation hole (22) is connected to the outside of the brake drum body (1), and the other end of the ventilation hole (22) is communicated with the annular ventilation cavity (21).

8. The brake drum heat conduction structure according to claim 7, characterized in that: A plurality of external air guide holes (23) communicating with the air guide channel (33) are provided in the middle of the annular ventilation cavity (21), and the external air guide holes (23) are communicated with the outside of the brake drum body (1).

9. The brake drum heat conduction structure according to claim 1, characterized in that: The two ends of the heat exchange ring (4) respectively extend to the end surfaces of the brake drum body (1) to form end surface heat conduction.

10. The brake drum heat conduction structure according to claim 3, characterized in that: Sealing gaskets (321) are respectively provided on both sides of the heat insulating portion (32), and the inner wall of the heat insulating portion (32) is clamped between the sealing gaskets (321).

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