Spiral heat dissipation brake drum

Abstract

The utility model discloses a spiral heat dissipation brake drum which comprises a brake drum body, one end of the brake drum body is fixedly connected with an installation fixing sleeve, a plurality of heat dissipation through holes are formed in the installation fixing sleeve, sliding grooves are formed in the two sides of the interior of each heat dissipation through hole, and sliding blocks are arranged in the sliding grooves in a sliding fit mode. A fixing frame is fixedly connected between the sliding blocks, a heat dissipation net is fixedly connected into the fixing frame, and spiral heat dissipation fins are fixedly connected to the outer ring of the brake drum body. By arranging the spiral cooling fins and the cooling through holes, heat can be generated when a brake shoe brakes in the running process of a vehicle, the heat enters the brake drum body and is conducted, firstly, part of the heat is subjected to spiral cooling through the spiral cooling fins on the outer side of the brake drum body, heat is conducted and dissipated through the spiral cooling fins, and then the heat is dissipated through the heat dissipation through the heat dissipation through holes. And the other part can be discharged through the heat dissipation net through the circulation of the heat dissipation through holes, so that the heat dissipation effect is improved through the two modes.

Description

Technical Field

[0001] This utility model relates to the field of heat dissipation brake drums, specifically a spiral heat dissipation brake drum. Background Technology

[0002] The brake drum is the friction pair of a drum brake. In addition to the strength and rigidity required as a component, it should also have the highest possible and most stable coefficient of friction, as well as appropriate wear resistance, heat resistance, heat dissipation, and heat capacity. The friction between the brake drum and the clutch shoe generates a large amount of heat, causing the working surface temperature of the brake drum to rise continuously, exceeding 500°C. The friction between the two is mostly spot contact. The contact surface undergoes a phase change due to the heat generated by friction, generating phase change stress. Uneven heating also generates stress, resulting in uneven mechanical properties of the brake drum. Under frequent braking loads, cracks will appear. As the cracks increase and extend, they form a network of cracks. To improve the heat dissipation effect of the brake drum, heat dissipation holes are usually opened on the brake drum to dissipate the heat generated by friction inside the brake drum.

[0003] In the present technology, brake drums are made of gray cast iron. When the brake shoes are used, they generate a lot of heat, and this heat does not have a good heat dissipation effect, which affects the braking performance of the brake shoes. Summary of the Invention

[0004] The purpose of this utility model is to provide a spiral heat dissipation brake drum. When the brake shoes brake during vehicle operation, heat is generated. At this time, the heat will enter the interior of the brake drum body and be conducted. First, a portion of the heat will be dissipated by spiral heat dissipation fins on the outer side of the brake drum body.

[0005] To achieve the above objectives, a spiral heat dissipation brake drum is provided, comprising: a brake drum body, an mounting sleeve fixedly connected to one end of the brake drum body, a plurality of heat dissipation through holes being provided inside the mounting sleeve, sliding grooves being provided on both sides of the heat dissipation through holes, sliding blocks being slidably fitted inside the sliding grooves, a fixed frame being fixedly connected between the sliding blocks, a heat dissipation mesh being fixedly connected inside the fixed frame, and spiral heat dissipation fins being fixedly connected to the outer ring of the brake drum body.

[0006] The brake drum body has an internal insertion cavity.

[0007] Several mounting bolts are fixedly connected to one end of the brake drum body.

[0008] The upper and lower ends of the slide are fixedly connected to support springs, and the support springs are fixedly connected to the slider.

[0009] The number of mounting bolts is multiple.

[0010] The spiral heat sink is made of thermally conductive aluminum plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model is equipped with spiral heat dissipation fins and heat dissipation holes. When the brake shoes brake during vehicle operation, heat is generated. At this time, the heat will enter the interior of the brake drum body and be conducted. First, part of the heat will be dissipated by the spiral heat dissipation fins on the outer side of the brake drum body, and the heat will be conducted away. The other part can be discharged through the heat dissipation holes and the heat dissipation mesh. The heat dissipation effect is improved by these two methods.

[0013] 2. This utility model is equipped with a sliding groove, a supporting spring, and a heat dissipation mesh. When the vehicle is moving, it will shake and vibrate. The supporting spring is installed inside the sliding groove. The elastic support of the supporting spring enables the fixed frame to move back and forth in an elastic position, which vibrates and shakes off impurities, improves the cleaning effect, and prevents the heat dissipation mesh from being blocked.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the main body of a spiral heat dissipation brake drum according to the present invention.

[0016] Figure 2 This is a side cross-sectional view of a spiral heat dissipation brake drum according to the present invention.

[0017] Figure 3 This utility model Figure 2 Enlarged view of point A in the image.

[0018] Figure 4 This is a front view of the heat dissipation through hole cross-section of a spiral heat dissipation brake drum according to the present invention.

[0019] In the diagram: 1. Brake drum body; 2. Spiral heat sink; 3. Mounting sleeve; 4. Mounting bolt; 5. Insertion cavity; 6. Slide groove; 7. Fixing frame; 8. Heat dissipation mesh; 9. Slider; 10. Support spring; 11. Heat dissipation through hole. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0022] Please see Figure 1-4This utility model provides a technical solution: a spiral heat dissipation brake drum, comprising: a brake drum body 1, with a mounting sleeve 3 fixedly connected to one end of the brake drum body 1. The mounting sleeve 3 is used to install and fix the brake drum body 1 to the outside of the brake shoe. When the brake shoe brakes during vehicle operation, heat is generated. The mounting sleeve 3 has several heat dissipation holes 11 inside, allowing some heat to flow through the heat dissipation holes 11 and be discharged through a heat dissipation mesh 8. Sliding grooves 6 are provided on both sides of the heat dissipation holes 11. The sliding effect is enhanced by the structure of the sliding grooves 6 and sliders 9, facilitating vertical lifting and lowering. Sliding sliders 9 slide within the sliding grooves 6, and a fixed frame 7 is fixedly connected between the sliders 9. A heat dissipation mesh 8 is fixedly connected inside the fixed frame 7. When a vehicle is in motion, sand and gravel inevitably enter. At this time, the heat dissipation mesh 8 blocks the impurities. The outer ring of the brake drum body 1 is fixedly connected with a spiral heat dissipation fin 2. The heat will enter the interior of the brake drum body 1 and be conducted. First, a part of it will complete spiral heat dissipation with the outer spiral heat dissipation fin 2 of the brake drum body 1, thus conducting and dissipating the heat. The upper and lower ends of the slide groove 6 are fixedly connected with support springs 10. When the vehicle is in motion, it will shake and vibrate. The support springs 10 are set inside the slide groove 6. The elastic support of the support springs 10 enables the fixed frame 7 to move back and forth in an elastic position, which shakes off the impurities, improves the cleaning effect, and prevents the heat dissipation mesh 8 from being blocked. The support springs 10 are fixedly connected to the slider 9. The spiral heat dissipation fin 2 is made of thermally conductive aluminum plate.

[0023] The brake drum body 1 has an internal cavity 5 for insertion, and one end of the brake drum body 1 is fixedly connected with a number of mounting bolts 4.

[0024] Working principle: In use, the brake drum body 1 is first fixed to the outside of the brake shoe by installing a fixing sleeve 3 at one end. Then, when the brake shoe brakes during vehicle operation, heat is generated. This heat enters the interior of the brake drum body 1 and is conducted. First, part of the heat is dissipated by spiral heat dissipation fins 2 on the outside of the brake drum body 1. The other part can be discharged through the heat dissipation mesh 8 through the heat dissipation holes 11. When the vehicle is in motion, sand and gravel inevitably enter. The heat dissipation mesh 8 blocks the impurities. When some impurities get stuck inside the heat dissipation mesh 8, the vehicle will shake and vibrate during operation. A support spring 10 is installed inside the slide groove 6. The elastic support of the support spring 10 enables the fixed frame 7 to move back and forth elastically, which vibrates and shakes off the impurities, improving the cleaning effect and preventing blockage of the heat dissipation mesh 8.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A spiral heat dissipation brake drum, comprising: A brake drum body (1), characterized in that one end of the brake drum body (1) is fixedly connected to a mounting sleeve (3), a plurality of heat dissipation holes (11) are provided inside the mounting sleeve (3), both sides of the heat dissipation holes (11) are provided with slide grooves (6), a slider (9) is slidably matched inside the slide groove (6), a fixing frame (7) is fixedly connected between the sliders (9), a heat dissipation net (8) is fixedly connected inside the fixing frame (7), and a spiral heat sink (2) is fixedly connected to the outer ring of the brake drum body (1).

2. A spiral heat dissipation brake drum according to claim 1, characterized in that: The brake drum body (1) is provided with an inserting inner cavity (5) inside.

3. A spiral heat dissipation brake drum as claimed in claim 1, characterized in that: One end of the brake drum body (1) is fixedly connected to a plurality of mounting bolts (4).

4. A spiral heat dissipation brake drum as claimed in claim 1, characterized in that: Support springs (10) are fixedly connected to the upper and lower ends of the slide groove (6), and the support springs (10) are fixedly connected to the slider (9).

5. A spiral heat dissipation brake drum as claimed in claim 3, characterized in that: The number of the mounting bolts (4) is multiple.

6. A spiral heat dissipation brake drum as claimed in claim 1, characterized in that: The spiral heat sink (2) is made of a heat-conducting aluminum plate.

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