Brake assembly for commercial vehicle

Abstract

The brake assembly for the commercial vehicle comprises a bracket and a brake disc, oil cylinders are installed at the two ends of the bracket, brake pads are installed at the output ends of the oil cylinders, and the brake pads are located on the two sides of the brake disc respectively; the brake disc comprises two disc bodies, a plurality of connecting rods are fixedly connected between the two disc bodies, the connecting rods are located at the edge positions of the disc bodies, a one-way bearing is arranged between the two disc bodies, the brake disc and the one-way bearing are both installed on an axle, the one-way bearing does not make contact with the two disc bodies, and the two disc bodies are fixedly connected with the brake disc. An impeller is arranged outside the one-way bearing in a sleeving mode, located between the two disc bodies and not in contact with the disc bodies.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile braking, in particular to a brake assembly for a commercial vehicle. BACKGROUND

[0002] Drum brakes have been used in commercial vehicles for a long time due to their low cost, strong braking force and suitability for heavy load scenarios. They have simple structure and low maintenance cost, and their braking efficiency can be improved by a pneumatic auxiliary system. Some commercial vehicles (such as medium trucks or buses) use disc brakes, especially in working conditions requiring high-frequency braking or high heat dissipation, disc brakes have good heat dissipation and fast response, but they are more expensive and require more stringent braking hydraulic systems.

[0003] Although disc brakes have good heat dissipation, they can easily heat up and cause thermal decay on long downhill sections. Some commercial vehicles currently have a spray system installed on the vehicle to spray and cool the brake disc. When the water tank that supplies water to the spray device is small, the cooling water has a short endurance time, and the water in the water tank will be consumed in a short time, resulting in the need to frequently add water to the water tank, which cannot guarantee brake safety. At the same time, the spray system can cause the road surface to be slippery, posing a safety hazard to other subsequent vehicles, especially when the temperature is below zero, which can cause the road surface to freeze. In addition, the spray system can also cause potential damage to the brake disc. When the brake disc temperature exceeds 500℃ (such as long-distance emergency braking), sudden watering can cause metal embrittlement or deformation, affecting braking performance.

[0004] Therefore, there is a need for a brake assembly for a commercial vehicle to solve the above technical problems. SUMMARY

[0005] The present application provides a brake assembly for a commercial vehicle to solve the above technical problems.

[0006] The technical solution of the present application to solve the above technical problems is as follows: a brake assembly for a commercial vehicle, comprising a bracket and a brake disc, both ends of the bracket are provided with an oil cylinder, the output end of the oil cylinder is provided with a brake pad, and the brake pad is located on both sides of the brake disc. The brake disc comprises two disc bodies, a plurality of connecting rods are fixedly connected between the two disc bodies, the connecting rods are located at the edge positions of the disc bodies, a one-way bearing is arranged between the two disc bodies, the brake disc and the one-way bearing are installed on an axle, the one-way bearing does not contact the two disc bodies, a impeller is sleeved outside the one-way bearing, and the impeller is located between the two disc bodies and does not contact the disc bodies.

[0007] Preferably, the brake assembly for commercial vehicles, wherein the outer side of the one-way bearing is fixed with a baffle ring and a heat sink at both ends, a spring is arranged between the baffle ring and the impeller, the spring is sleeved on the outside of the one-way bearing, the impeller is axially connected with the one-way bearing, the impeller is radially fixed with the one-way bearing, and the inside of the heat sink is provided with a containing cavity.

[0008] Preferably, the brake assembly for commercial vehicles, wherein a heat-sensitive pushing assembly is installed in the containing cavity, and the heat-sensitive pushing assembly is deformed to push the impeller to the side of the spring when the temperature of the heat-sensitive pushing assembly rises.

[0009] Preferably, the brake assembly for commercial vehicles, wherein the containing cavity comprises an annular receiving groove and a plurality of strip-shaped receiving grooves, and the containing cavity is matched with the impeller.

[0010] Preferably, the brake assembly for commercial vehicles, wherein the heat sink is provided with an electromagnetic coil and an electromagnet, a first magnet is fixed on the outside of the axle near the heat sink, a second magnet is fixed on the side of the impeller near the heat sink, and the second magnet is positionally corresponding to the electromagnet.

[0011] Preferably, the brake assembly for commercial vehicles, wherein a plurality of heat dissipation holes are arranged on the brake disc.

[0012] Preferably, the brake assembly for commercial vehicles, wherein a plurality of circumferentially arranged grooves are arranged on the outer side of the brake disc.

[0013] Preferably, the brake assembly for commercial vehicles, wherein the impeller and the heat sink are made of high-thermal-conductivity material.

[0014] The brake assembly for commercial vehicles has the following advantages: the impeller is arranged between the two disc plates of the brake disc, when there is no pushing assembly on the outer side of the impeller, the hub mounting disc and the axle drive the one-way bearing to rotate synchronously, and the impeller rotates synchronously; when the vehicle brakes, the hub mounting disc and the axle reduce or stop rotating, and the inertia of the impeller and the characteristics of the one-way bearing enable the impeller to continue rotating to dissipate heat from the brake disc. The baffle ring and the heat sink are fixed at both ends of the outer side of the one-way bearing, the containing cavity is arranged in the heat sink, and the pushing assembly is installed in the containing cavity; when the vehicle normally runs, the impeller is pushed into the containing cavity by the spring, which can reduce wind resistance and running noise; when the vehicle brakes or the temperature of the brake disc rises due to excessive braking, the pushing assembly pushes the impeller to the side of the spring, and then pushes the impeller out of the containing cavity, which can exhaust hot air between the two disc plates when the impeller rotates, promote air circulation, and achieve air cooling. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present application; Figure 2 It is a schematic diagram of the external mounting structure of the one-way bearing of the present application; Figure 3 It is a schematic diagram of the structure of the brake disc. Figure 2 It is a left view of the heat dissipation plate. Figure 4 It is a schematic diagram of the structure of the impeller. Figure 5 It is a schematic diagram of the structure of the brake disc.

[0016] In the drawings, the components represented by each reference numeral are listed as follows: 1, bracket, 2, oil cylinder, 3, brake pad, 4, brake disc, 5, connecting rod, 6, axle, 7, hub mounting disc, 8, impeller, 9, one-way bearing, 10, heat dissipation plate, 11, spring, 12, annular receiving groove, 13, circular hole, 14, heat dissipation hole, 15, groove, 16, strip-shaped receiving groove, 17, retaining ring. DETAILED DESCRIPTION

[0017] The principles and features of the present application are described below in conjunction with the drawings, and the examples are used only to explain the present application and are not intended to limit the scope of the present application.

[0018] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 indicated, a brake assembly for a commercial vehicle includes a bracket 1, a brake disc 4, and the bracket 1 is fixed on the vehicle frame. The oil cylinder 2 is installed at both ends of the bracket 1, and the output end of the oil cylinder 2 is provided with a brake pad 3, and the brake pad 3 is located on both sides of the brake disc 4. The brake disc 4 is provided with a plurality of heat dissipation holes 14, which facilitates heat dissipation. A plurality of circumferentially arranged grooves 15 are provided on the outer side surface of the brake disc 4, which facilitates scraping off the powder generated by the wear of the brake pad 3, thereby increasing the friction and improving the braking performance.

[0019] The brake disc 4 includes two disc bodies, and a plurality of connecting rods 5 are fixedly connected between the two disc bodies, and the space in the middle is convenient for heat dissipation. The connecting rods 5 are located at the outer edge positions of the disc bodies, and a one-way bearing 9 is provided between the two disc bodies, and the brake disc 4 and the one-way bearing 9 are installed on the axle 6, and the brake disc 4, the one-way bearing 9 and the axle 6 are coaxially arranged. The one-way bearing 9 does not contact the two disc bodies, and the one-way bearing 9 is externally sleeved with an impeller 8, and the impeller 8 is radially fixedly connected with the one-way bearing 9, that is, the impeller 8 will rotate with the external rotation of the one-way bearing 9. The impeller 8 is located between the two disc bodies and does not contact the disc bodies.

[0020] When the vehicle is running normally, the hub mounting disc 7, the axle 6 drive the one-way bearing 9 to rotate synchronously, and the impeller 8 rotates synchronously. When the vehicle is braking, the hub mounting disc 7 and the axle 6 reduce or stop rotating, while the inertia of the impeller 8 and the characteristics of the one-way bearing 9 enable the impeller 8 to continue rotating to dissipate heat for the brake disc 4.

[0021] Further, since the rotation of the impeller 8 increases wind resistance and generates noise when the vehicle is running normally, the following embodiment is provided to solve the above problems. The outer two ends of the one-way bearing 9 are respectively fixed with a retaining ring 17 and a heat sink 10, the heat sink 10 is provided with a circular hole 13 in the center, and the one-way bearing 9 passes through the circular hole 13. The retaining ring 17, the heat sink 10 and the impeller 8 always rotate synchronously and have the same angular velocity. The impeller 8 and the heat sink 10 are made of high-thermal-conductivity material, which is convenient for heat dissipation. The spring 11 is arranged between the retaining ring 17 and the impeller 8, and the spring 11 is sleeved outside the one-way bearing 9. The impeller 8 is axially slidably connected with the one-way bearing 9. The heat sink 10 is internally provided with a receiving cavity, and when the vehicle is running normally, the impeller 8 is pushed into the receiving cavity by the spring 11, which can reduce wind resistance and driving noise.

[0022] A heat-sensitive pushing assembly is installed in the receiving cavity, which is deformed to push the impeller 8 to the side of the spring 11 after the temperature rises. When the temperature of the brake disc 4 rises due to excessive braking, the heat-sensitive pushing assembly is located inside the two disc bodies, and the high temperature causes the temperature of the heat-sensitive pushing assembly to rise, which expands to push the impeller 8 to the side of the spring 11, and then pushes the impeller 8 out of the receiving cavity. When the impeller 8 rotates, it can exhaust the hot air between the two disc bodies, promote air circulation, and achieve air cooling. The receiving cavity includes an annular receiving groove 12 and a plurality of strip-shaped receiving grooves 16, and the receiving cavity is matched with the impeller 8. The heat-sensitive pushing assembly can be a material with high thermal conductivity or a heat-deformed pushing assembly composed of a plurality of bimetallic sheets.

[0023] As another embodiment of the present application, on the basis of the heat dissipation plate 10 and the accommodating cavity, a magnetic pushing assembly is arranged outside the impeller 8, an electromagnetic coil and an electromagnet are arranged on the heat dissipation plate 10, and a first magnet is fixed to the part of the axle 6 close to the heat dissipation plate 10. When the vehicle is running normally, the axle 6 and the heat dissipation plate 10 rotate synchronously, so at this time, the electromagnetic coil, the electromagnet and the first magnet have no relative displacement. When the vehicle brakes, the axle 6 slows down or stops, while the heat dissipation plate 10 continues to rotate due to inertia and the characteristics of the one-way bearing 9. At this time, the heat dissipation plate 10 rotates relative to the axle 6, and there is relative displacement. The first magnet on the axle 6 generates a magnetic field, while the electromagnetic coil on the heat dissipation plate 10 cuts the magnetic induction lines to generate an electric current, and then the electromagnet is electrified to generate magnetism. The second magnet is fixed to the side of the impeller 8 close to the heat dissipation plate 10, and the second magnet corresponds to the position of the electromagnet, and the second magnet and the electromagnet repel each other when the vehicle brakes. Therefore, the electromagnet is electrified to push the second magnet and the impeller 8 out of the accommodating cavity when braking. At this time, the rotation of the impeller 8 can cool the brake disc to prevent the brake disc from overheating due to braking.

[0024] Working principle: When there is no pushing assembly outside the impeller 8, when the vehicle is running normally, the hub mounting disc 7 and the axle 6 drive the one-way bearing 9 to rotate synchronously, and the impeller 8 rotates synchronously. When the vehicle brakes, the hub mounting disc 7 and the axle 6 slow down or stop, while the inertia of the impeller 8 and the characteristics of the one-way bearing 9 enable the impeller 8 to continue to rotate to dissipate heat for the brake disc 4.

[0025] When the heat-sensitive pushing assembly is installed in the accommodating cavity, when the vehicle is running normally, the impeller 8 is pushed into the accommodating cavity by the spring 11, which can reduce wind resistance and driving noise. When the temperature of the brake disc 4 rises due to excessive braking, the high temperature causes the temperature of the heat-sensitive pushing assembly to rise, and the heat-sensitive pushing assembly expands to push the impeller 8 to the side of the spring 11, and then pushes the impeller 8 out of the accommodating cavity. When the impeller 8 rotates, it can exhaust the hot air between the two disc bodies, promote air circulation, and achieve air cooling.

[0026] When the magnetic pushing assembly is arranged outside the impeller 8, when the vehicle is running normally, the axle 6 and the heat dissipation plate 10 rotate synchronously, so at this time, the electromagnetic coil, the electromagnet and the first magnet have no relative displacement. When the vehicle brakes, the axle 6 slows down or stops, while the heat dissipation plate 10 continues to rotate due to inertia and the characteristics of the one-way bearing 9. At this time, the heat dissipation plate 10 rotates relative to the axle 6, and there is relative displacement. The first magnet on the axle 6 generates a magnetic field, while the electromagnetic coil on the heat dissipation plate 10 cuts the magnetic induction lines to generate an electric current, and then the electromagnet is electrified to generate magnetism. The electromagnet is electrified to push the second magnet and the impeller 8 out of the accommodating cavity when braking. At this time, the rotation of the impeller 8 can cool the brake disc to prevent the brake disc from overheating due to braking.

[0027] In the description of the present application, it is to be understood that the terms "upper", "lower", "left", "right", and the like refer to the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, and a particular orientation configuration and operation, therefore, cannot be understood as a limitation on the present application. In addition, "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0028] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] The above describes one embodiment of the present application in detail, but the content described is only the preferred embodiment of the present application, and cannot be considered as limiting the scope of the present application. Any equivalent changes and improvements made within the scope of the present application shall still belong to the scope of the present patent.

Claims

1. A brake assembly for a commercial vehicle, characterized by: Including bracket (1), brake disc (4), both ends of the bracket (1) are provided with oil cylinder (2), the output end of the oil cylinder (2) is provided with brake pad (3), the brake pad (3) is located at both sides of the brake disc (4) respectively; The brake disc (4) includes two disc bodies, a plurality of connecting rods (5) are fixedly connected between the two disc bodies, the connecting rods (5) are located at the edge positions of the disc bodies, a one-way bearing (9) is arranged between the two disc bodies, the brake disc (4) and the one-way bearing (9) are installed on an axle (6), the one-way bearing (9) does not contact the two disc bodies, an impeller (8) is sleeved outside the one-way bearing (9), the impeller (8) is located between the two disc bodies and does not contact the disc bodies.

2. The brake assembly for a commercial vehicle of claim 1, characterized in that: The outer two end positions of the one-way bearing (9) are fixedly provided with a baffle ring (17) and a heat sink (10) respectively, a spring (11) is arranged between the baffle ring (17) and the impeller (8), the spring (11) is sleeved outside the one-way bearing (9), the impeller (8) is axially and slidably connected with the one-way bearing (9), the impeller (8) is radially and fixedly connected with the one-way bearing (9), and the heat sink (10) is internally provided with a containing cavity.

3. The brake assembly for a commercial vehicle of claim 2, characterized in that: A heat-sensitive pushing assembly is installed in the containing cavity, and the heat-sensitive pushing assembly is deformed to push the impeller (8) to one side of the spring (11) after the temperature of the heat-sensitive pushing assembly is increased.

4. The brake assembly for a commercial vehicle of claim 2, characterized in that: The containing cavity includes an annular receiving groove (12) and a plurality of strip-shaped receiving grooves (16), and the containing cavity is matched with the impeller (8).

5. The brake assembly for a commercial vehicle of claim 2, characterized in that: An electromagnet coil and an electromagnet are arranged on the heat sink (10), a first magnet is fixed to a portion of the outside of the axle (6) close to the heat sink (10), a second magnet is fixed to one side of the impeller (8) close to the heat sink (10), and the second magnet is positionally corresponding to the electromagnet.

6. The brake assembly for a commercial vehicle of claim 1, characterized in that: A plurality of heat dissipation holes (14) are arranged on the brake disc (4).

7. The brake assembly for a commercial vehicle of claim 1, characterized in that: A plurality of circumferentially arranged grooves (15) are arranged on the outer side of the brake disc (4).

8. The brake assembly for a commercial vehicle of claim 2, characterized in that: The impeller (8) and the heat sink (10) are made of high-thermal-conductivity material.

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