Novel brake drum for heavy-duty vehicle

Abstract

The utility model relates to the technical field of automobile manufacturing, and discloses a novel heavy-duty vehicle brake drum which comprises a drum body, a plurality of heat dissipation holes are formed in the top of the drum body, a heat dissipation disc is fixedly connected to the outer wall of the drum body, a plurality of cooling holes are formed in the outer wall of the heat dissipation disc, and cooling pipes are fixedly connected to the inner walls of the cooling holes. The inner wall of the cooling pipe is slidably connected with a heat exchange pipe, the inner wall of the heat exchange pipe is fixedly connected with a cooling pipe, and the inner wall of the cooling pipe is fixedly connected with a flow limiting hole. According to the utility model, the drum body rotates to drive the heat dissipation disc to rotate, and liquid in the heat exchange pipe flows and exchanges heat with liquid in the cooling pipe for cooling under the action of centrifugal force, so that the purpose of actively cooling the brake drum for a long time is achieved, and the reduction of the brake performance of a vehicle caused by high-temperature deformation of the brake drum due to high temperature is avoided; the safety of the vehicle is improved, and the probability of accidents is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile manufacturing, in particular to a new type of heavy vehicle brake drum. Background Art

[0002] The braking device of heavy vehicles is crucial for ensuring the safe and efficient operation of large vehicles. Since the weight and inertia of these vehicles make the braking requirements far exceed those of light vehicles, an efficient braking device can effectively decelerate and stop to avoid accidents, improve driving stability, reduce braking fatigue, extend the service life of braking components, thereby reducing maintenance costs and improving overall operation efficiency. The commonly used braking types are disc brakes and drum brakes, and the drum brake is the traditional braking device for heavy vehicles.

[0003] The drum brake generates braking force by driving the brake shoes to friction the brake drum hydraulically. It has good braking performance and durability, and is designed firmly, capable of withstanding the high load and harsh operating conditions of heavy vehicles, with a long service life. It is also equipped with an automatic adjustment mechanism that can automatically adjust the brake gap when the brake pads wear, so as to maintain good braking performance. The brake drum is a key component in the drum braking device, with a cylindrical metal shell shape and is fixed on the wheel axle.

[0004] When the existing heavy vehicle brake drum is heated due to multiple brakings during a vehicle's downhill travel, it dissipates heat through the ventilation holes opened on it or fixed heat sinks, which can prevent brake failure caused by high temperature of the brake drum during short downhill slopes. However, during long downhill slopes, it cannot cool down quickly and continuously, resulting in high temperature deformation of the brake drum, a decline in the vehicle's braking performance, a reduction in safety, and an increased probability of accidents. Summary of the Utility Model

[0005] In order to make up for the above deficiencies, the utility model provides a new type of heavy vehicle brake drum, aiming to improve the problem that the existing heavy vehicle brake drum can only dissipate heat through the ventilation holes opened on it or fixed heat sinks, and cannot cool down quickly and continuously during long downhill slopes, resulting in high temperature deformation of the brake drum.

[0006] To achieve the above object, the present utility model adopts the following technical solutions: A new type of heavy vehicle brake drum, including a drum body, wherein a plurality of heat dissipation holes are provided at the top of the drum body, a heat dissipation disc is fixedly connected to the outer wall of the drum body, a plurality of cooling holes are provided on the outer wall of the heat dissipation disc, a cooling pipe is fixedly connected to the inner wall of the cooling hole, a heat exchange pipe is slidably connected to the inner wall of the cooling pipe, a cooling pipe is fixedly connected to the inner wall of the heat exchange pipe, a current limiting hole is fixedly connected to the inner wall of the cooling pipe, a block is slidably connected to the inner wall of the current limiting hole, a first rotating shaft is rotatably connected to the bottom of the block, a connecting rod is rotatably connected to the outer wall of the first rotating shaft, a second rotating shaft is rotatably connected to the bottom of the connecting rod, a noise reduction device is fixedly connected to the bottom of the drum body, and the noise reduction device is used to reduce the noise during braking.

[0007] As a further description of the above technical solution:

[0008] The noise reduction device includes a shock absorption disc, the top of the shock absorption disc is fixedly connected to the bottom of the drum body, a plurality of inclined grooves are provided on the outer wall of the shock absorption disc, an isolation pad is fixedly connected to the bottom of the shock absorption disc, a shock absorption pad is fixedly connected to the inner wall of the drum body, a first air groove is provided in the middle of the inner wall of the drum body, and a second air groove is provided at the bottom of the inner wall of the first air groove.

[0009] As a further description of the above technical solution:

[0010] The bottom of the second air groove is communicated with the inner wall of the shock absorption disc, and the plurality of inclined grooves are all inclined cylindrical holes.

[0011] As a further description of the above technical solution:

[0012] A limiting ring is provided in the middle of the outer wall of the block, and the inner wall of the limiting ring is slidably connected to the outer wall of the block.

[0013] As a further description of the above technical solution:

[0014] A nameplate is fixedly connected to the top of the heat dissipation disc near the edge, and the plurality of cooling pipes are all fixedly connected at the same horizontal height.

[0015] As a further description of the above technical solution:

[0016] An installation ring is fixedly connected to the top of the inner wall of the drum body, and installation holes are provided on the top of the installation ring.

[0017] As a further description of the above technical solution:

[0018] The top of the shock absorption disc is communicated with the bottom of the drum body, and the material of the isolation pad is polyurethane composite material.

[0019] As a further description of the above technical solution:

[0020] The outer wall of the second rotating shaft is rotatably connected to the inner wall of the cooling pipe, and a sealing ring is fixedly connected to the top end of the cooling pipe.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, the rotation of the drum drives the rotation of the heat dissipation disc, and the centrifugal force is used to make the liquid in the heat exchange pipe flow and exchange heat with the liquid in the cooling pipe for cooling. Subsequently, heat exchange occurs with the drum to cool it. The connecting rod rotates along the first rotating shaft and the second rotating shaft, moving the stop block backward, achieving the purpose of actively cooling the brake drum for a long time. This avoids the decline in vehicle braking performance caused by the high temperature deformation of the brake drum due to high temperature, improves the safety of the vehicle, and reduces the probability of accidents.

[0023] 2. In the utility model, the shock pad rubs against the brake shoe, discharging the squeezed air from the air groove one into the shock absorption disc through the air groove two, and then discharging it from the inclined groove in the shock absorption disc. The isolation pad separates the shock absorption disc from the wheel, achieving the purpose of reducing brake jitter, thereby reducing the noise during braking, reducing the noise pollution to the surrounding environment, and improving the driving experience of users. Description of the Drawings

[0024] Figure 1 is the front three-dimensional view of a new type of heavy vehicle brake drum proposed by the utility model;

[0025] Figure 2 is the top view of a new type of heavy vehicle brake drum proposed by the utility model;

[0026] Figure 3 is the cross-sectional view of the shock absorption disc of a new type of heavy vehicle brake drum proposed by the utility model;

[0027] Figure 4 is the partial structure split view of a new type of heavy vehicle brake drum proposed by the utility model;

[0028] Figure 5 is the cross-sectional view of the heat exchange pipe of a new type of heavy vehicle brake drum proposed by the utility model.

[0029] Legend Explanation:

[0030] 1. Drum body; 2. Noise reduction device; 201. Shock absorption disc; 202. Shock absorption pad; 203. Air duct 1; 204. Inclined groove; 205. Isolation pad; 206. Air duct 2; 3. Heat dissipation disc; 4. Cooling holes; 5. Heat exchange tube; 6. Heat dissipation holes; 7. Cooling tube; 8. Flow limiting hole; 9. Stop block; 10. Limiting ring; 11. Connecting rod; 12. First rotating shaft; 13. Second rotating shaft; 14. Sealing ring; 15. Mounting ring; 16. Mounting hole; 17. Nameplate. Detailed implementation mode

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Please refer to the attached Figure 1 -attached Figure 3 As shown in the figure, an embodiment provided by the present invention: a new type of heavy vehicle brake drum, including a drum body 1. A plurality of heat dissipation holes 6 are opened at the top of the drum body 1. The outer wall of the drum body 1 is fixedly connected with a heat dissipation disc 3. A plurality of cooling holes 4 are opened on the outer wall of the heat dissipation disc 3. The inner wall of the cooling hole 4 is fixedly connected with a cooling tube 7. A heat exchange tube 5 is slidably connected to the inner wall of the cooling tube 7. The inner wall of the heat exchange tube 5 is fixedly connected with a cooling tube 7. A flow limiting hole 8 is fixedly connected to the inner wall of the cooling tube 7. A stop block 9 is slidably connected to the inner wall of the flow limiting hole 8. The bottom of the stop block 9 is rotatably connected to a first rotating shaft 12. The outer wall of the first rotating shaft 12 is rotatably connected with a connecting rod 11. The bottom of the connecting rod 11 is rotatably connected to a second rotating shaft 13. The bottom of the drum body 1 is fixedly connected with a noise reduction device 2. The noise reduction device 2 is used to reduce the noise during braking. A limiting ring 10 is arranged in the middle of the outer wall of the stop block 9. The inner wall of the limiting ring 10 is slidably connected to the outer wall of the stop block 9;

[0033] Specifically, a plurality of heat dissipation holes 6 are carefully opened at the top of the drum body 1. The heat dissipation holes 6 can play a role in making air circulate and assisting in heat dissipation. The outer wall of the drum body 1 is fixedly connected with a heat dissipation disc 3. A plurality of cooling holes 4 are opened on the outer wall of the heat dissipation disc 3. It can help the cooling tube 7 to exchange heat with the outside air. The connecting rod 11 is rotatably connected to the first rotating shaft 12 and the second rotating shaft 13. At the same time, the stop block 9 is rotatably connected to the first rotating shaft 12, so that when the connecting rod 11 rotates, the stop block 9 is also moved backward.

[0034] Please refer to the attached Figure 3 -attached Figure 5, the noise reduction device 2 includes a shock absorption disc 201. The top of the shock absorption disc 201 is fixedly connected to the bottom of the drum body 1. A plurality of inclined slots 204 are formed in the outer wall of the shock absorption disc 201. A spacer 205 is fixedly connected to the bottom of the shock absorption disc 201. A shock pad 202 is fixedly connected to the inner wall of the drum body 1. An air groove 203 is formed in the middle of the inner wall of the drum body 1. An air groove 206 is formed in the bottom of the inner wall of the air groove 203. The top of the shock absorption disc 201 is communicated with the bottom of the drum body 1. The material of the spacer 205 is a polyurethane composite material;

[0035] Specifically, an air groove 206 is formed in the bottom of the inner wall of the air groove 203 to help the air compressed in the air groove 203 flow to the shock absorption disc 201 through the air groove 206 and then blow out from the inclined slots 204. The material of the spacer 205 is a polyurethane composite material, which ensures that the vibration can be absorbed while being durable. The shock pad 202 can reduce the vibration when the brake shoe rubs against the inner wall of the drum body 1.

[0036] Please refer to the appendix Figure 2 - appendix Figure 4 , an installation ring 15 is fixedly connected to the top of the inner wall of the drum body 1. Installation holes 16 are formed in the top of the installation ring 15. The bottom of the air groove 206 is communicated with the inner wall of the shock absorption disc 201. The plurality of inclined slots 204 are all inclined cylindrical holes. The outer wall of the second rotating shaft 13 is rotationally connected to the inner wall of the cooling pipe 7. A sealing ring 14 is fixedly connected to the top end of the cooling pipe 7. A nameplate 17 is fixedly connected to the top of the heat dissipation disc 3 near the edge. The plurality of cooling pipes 7 are all fixedly connected at the same horizontal height;

[0037] Specifically, the relevant information of the brake drum is marked on the nameplate 17, which is convenient for users to identify and use. The shape of the inclined slot 204 is an inclined cylindrical hole, which can effectively guide the air flow. Installation holes 16 are formed in the top of the installation ring 15, which is convenient for connecting and fixing with other components. The function of the sealing ring 14 is to ensure good sealing of the connection between the heat exchange pipe 5 and the cooling pipe 7.

[0038] Working principle: When a heavy vehicle brakes multiple times or encounters a long downhill slope, frequent braking causes the temperature of the drum body 1 to rise. The drum body 1 rotates together with the wheel. When the drum body 1 rotates, it will drive the heat dissipation disc 3 to rotate together. The centrifugal force will make the liquid in the heat exchange tube 5 flow inside it. When flowing, it will push the block 9 away from the flow limiting hole 8, causing the connecting rod 11 to rotate along the second rotating shaft 13 and the first rotating shaft 12, and then move the block 9 backward along the limit of the limit ring 10. Conversely, when flowing in the opposite direction, the block 9 will be in contact with the inner wall of the flow limiting hole 8, ensuring the directional flow. When flowing into the cooling tube 7, it will exchange heat with the liquid in the cooling tube 7. When the cooled liquid flows to the other end of the heat exchange tube 5, it will exchange heat with the outer wall of the drum body 1. At the same time, the liquid in the cooling tube 7 will be cooled by the air flowing through the cooling holes 4, and the gas will also be blown into the drum body 1 through the heat dissipation holes 6 for cooling at the same time;

[0039] When braking, the brake shoe does not directly rub against the inner wall of the drum body 1, but rubs against the shock absorption pad 202. At the same time, the compressed air will be discharged from the air groove one 203 into the shock absorption disc 201 through the air groove two 206, and then flow out from the inclined groove 204. At the same time, the isolation pad 205 separates the shock absorption disc 201 from the wheel, and part of the vibration during braking will be absorbed by the isolation pad 205, thereby reducing noise.

[0040] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A new type of heavy vehicle brake drum, comprising a drum body (1), characterized in that: A plurality of heat dissipation holes (6) are provided at the top of the drum body (1). The outer wall of the drum body (1) is fixedly connected with a heat dissipation disc (3). A plurality of cooling holes (4) are provided on the outer wall of the heat dissipation disc (3). A cooling pipe (7) is fixedly connected to the inner wall of the cooling hole (4). A heat exchange pipe (5) is slidably connected to the inner wall of the cooling pipe (7). A cooling pipe (7) is fixedly connected to the inner wall of the heat exchange pipe (5). A flow limiting hole (8) is fixedly connected to the inner wall of the cooling pipe (7). A stopper (9) is slidably connected to the inner wall of the flow limiting hole (8). The bottom of the stopper (9) is rotatably connected to a first rotating shaft (12). A connecting rod (11) is rotatably connected to the outer wall of the first rotating shaft (12). The bottom of the connecting rod (11) is rotatably connected to a second rotating shaft (13). A noise reduction device (2) is fixedly connected to the bottom of the drum body (1). The noise reduction device (2) is used to reduce the noise during braking.

2. A novel heavy vehicle brake drum according to claim 1, characterized in that: The noise reduction device (2) includes a shock absorption disc (201). The top of the shock absorption disc (201) is fixedly connected to the bottom of the drum body (1). A plurality of inclined grooves (204) are provided on the outer wall of the shock absorption disc (201). An isolation pad (205) is fixedly connected to the bottom of the shock absorption disc (201). A shock absorption pad (202) is fixedly connected to the inner wall of the drum body (1). A first air groove (203) is provided in the middle of the inner wall of the drum body (1). A second air groove (206) is provided at the bottom of the inner wall of the first air groove (203).

3. A novel heavy vehicle brake drum according to claim 2, characterized in that: The bottom of the second air groove (206) communicates with the inner wall of the shock absorption disc (201). A plurality of the inclined grooves (204) are all inclined cylindrical holes.

4. A novel heavy vehicle brake drum according to claim 1, characterized in that: A limiting ring (10) is provided in the middle of the outer wall of the stopper (9). The inner wall of the limiting ring (10) is slidably connected to the outer wall of the stopper (9).

5. A novel heavy vehicle brake drum according to claim 1, characterized in that: A nameplate (17) is fixedly connected to the top of the heat dissipation disc (3) near the edge. A plurality of the cooling pipes (7) are all fixedly connected at the same horizontal height.

6. A novel heavy vehicle brake drum according to claim 1, characterized in that: An installation ring (15) is fixedly connected to the top of the inner wall of the drum body (1). Installation holes (16) are provided at the top of the installation ring (15).

7. A novel heavy vehicle brake drum according to claim 2, characterized in that: The top of the shock absorption disc (201) communicates with the bottom of the drum body (1). The isolation pad (205) is made of a polyurethane composite material.

8. A novel heavy vehicle brake drum according to claim 1, characterized in that: The outer wall of the second rotating shaft (13) is rotatably connected to the inner wall of the cooling pipe (7). A sealing ring (14) is fixedly connected to the top end of the cooling pipe (7).

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