Brake drum having a structure for preventing intrusion of silt

Abstract

The utility model relates to the technical fields of brake drum especially is concerned with a brake drum with prevent silt from invading structure, when using, the brake bottom plate is fixedly installed on the car beam frame through multiple groups of second through -hole, then brake drum body is fixedly connected with the wheel hub through multiple groups of first through -hole, the clearance of sealing washer subassembly round hole and the wheel hub is sealed, the clearance between brake drum body and brake bottom plate is sealed through dustproof subassembly, when using, brake bottom plate and brake structure fixedly stationary, improve the life, including brake drum body, brake bottom plate, first through -hole, second through -hole and round hole, brake drum body front end is provided with round hole, brake drum body front end periphery is provided with multiple groups of first through -hole, brake bottom plate periphery is provided with multiple groups of second through -hole, still include dustproof subassembly and sealing washer subassembly, brake drum body and brake bottom plate between are provided with dustproof subassembly, round hole inboard is provided with sealing washer subassembly, brake bottom plate front end is provided with brake structure.

Description

Technical Field

[0001] This utility model relates to the technical field of brake drums, and in particular to a brake drum with a structure to prevent mud and sand intrusion. Background Technology

[0002] A brake drum, also known as a brake pad, is a key component of the braking system in automobiles and other vehicles. It is typically located inside the wheel and consists of a cylindrical metal shell containing brake shoes or brake pads. The primary function of the brake drum is to convert the vehicle's kinetic energy into heat energy through friction, thereby slowing or stopping the vehicle. When the driver presses the brake pedal, brake fluid is transmitted through the braking system to the brake drum piston inside. The piston pushes the brake shoe or brake pads against the inner wall of the brake drum. The rotational kinetic energy of the wheel generates resistance through friction between the friction material inside the brake drum and the brake drum shell, thus slowing or stopping the wheel's rotation and achieving the braking effect.

[0003] In the prior art, patent document with publication number N222848579U discloses a brake drum with heat dissipation holes, including an outer shell fixedly connected to a wheel hub. The outer shell contains a brake structure, which includes a brake drum pad corresponding to the inner body of the outer shell. The inner side of the brake drum pad is connected to an arc-shaped adjusting member placed inside and penetrated by uniformly distributed heat dissipation fins. The adjusting member is connected to a base plate located below it and corresponding to the outer shell via a longitudinally penetrating connecting bolt. The base plate has centrally symmetrically distributed and obliquely penetrating through-holes. When the brake drum pad inside the outer shell contacts the plate inside the outer shell, friction occurs, thus completing the braking process. During this process, the rotating wheel hub drives the through-holes to rotate rapidly. The centrally symmetrical and obliquely distributed arrangement generates a strong rotating airflow inside the wheel hub. This rotating airflow passes through the heat dissipation fins, carrying away most of the heat from the brake drum pad, thus completing the heat dissipation of the brake drum.

[0004] During use, it was found that the sealing effect of the above-mentioned device was poor, and mud and sand could easily enter the interior of the outer shell, affecting the braking effect of the brake structure. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a brake drum with a structure to prevent mud and sand intrusion.

[0006] This utility model discloses a brake drum with a mud and sand intrusion prevention structure, comprising a brake drum body, a brake base plate, a first through hole, a second through hole, and a circular hole. The brake drum body has a circular hole at its front end, and multiple sets of first through holes are arranged circumferentially around its front end. The brake base plate has multiple sets of second through holes circumferentially. It also includes a dustproof component and a sealing gasket component. The dustproof component is disposed between the brake drum body and the brake base plate, and the sealing gasket component is disposed inside the circular hole. A brake structure is disposed at the front end of the brake base plate. In use, the brake base plate is fixedly installed on the vehicle frame through the multiple sets of second through holes. The brake drum is fixedly connected to the vehicle hub through multiple sets of No. 1 through holes. While the gap between the round hole of the sealing gasket assembly and the vehicle hub is sealed, the gap between the brake drum and the brake backing plate is sealed by the dustproof assembly. The brake structure is inside the brake drum. During use, the brake backing plate and the brake structure are fixed and stationary, and the brake drum rotates synchronously with the vehicle hub. By operating the brake structure to rub against the inner wall of the brake drum, the brake drum drives the vehicle hub to stop rotating, thus achieving braking. The dustproof assembly and the sealing ring assembly work together to prevent external mud and sand from entering the interior of the brake drum, thereby improving its service life.

[0007] Preferably, the dustproof assembly includes an inner ring, an outer ring, a first metal spiral wound ring, a second metal spiral wound ring, a convex ring, a first annular groove, and a second annular groove. The front end of the brake base plate is respectively provided with an inner ring and an outer ring. The outer side wall of the inner ring is provided with a first metal spiral wound ring, and the inner side wall of the outer ring is provided with a second metal spiral wound ring. The rear end of the brake drum is provided with a convex ring. The inner side wall of the convex ring is provided with a first annular groove, and the outer side wall of the convex ring is provided with a second annular groove. The first annular groove is adapted to the first metal spiral wound ring, and the second annular groove... It is compatible with the No. 2 metal spiral wound ring; when the brake backing plate is fixedly installed on the vehicle frame and the brake drum is fixedly installed on the vehicle hub, the convex ring enters between the inner ring and the outer ring, and at the same time, the No. 1 metal spiral wound ring enters the No. 1 annular groove and the No. 2 metal spiral wound ring enters the No. 2 annular groove. The inner ring, outer ring, No. 1 metal spiral wound ring and No. 2 metal spiral wound ring cooperate with each other to seal the gap between the brake drum and the brake backing plate, preventing mud and sand from entering the interior of the brake drum through the gap between the brake drum and the brake backing plate and adhering to the brake structure, thereby improving service life.

[0008] Preferably, the sealing ring assembly includes an annular groove and a sealing ring. The inner wall of the circular hole is provided with an annular groove, and the sealing ring is placed inside the annular groove. The brake drum body is fitted onto the outer wall of the hub, and the front side of the hub passes through the circular hole. The sealing ring seals the gap between the hub and the inner wall of the circular hole to prevent mud and sand from entering the interior of the brake drum body through the circular hole and affecting the service life of the brake structure.

[0009] Preferably, it also includes a third slot, which is provided at the front end of the brake drum body and communicates with the annular groove. When the sealing ring needs to be replaced after a period of use, the operator can use a tool to pass through the third slot and insert it into the annular groove to remove the sealing ring, thus improving the convenience of replacement.

[0010] Preferably, it also includes a first chamfer and a second chamfer. The top of the outer side wall of the inner ring is provided with a first chamfer, and the top of the inner side wall of the outer ring is provided with a second chamfer. With the cooperation of the first chamfer and the second chamfer, the convex ring can be quickly inserted between the inner ring and the outer ring, improving the convenience of operation and installation efficiency.

[0011] Preferably, it also includes an annular barrier, with an annular barrier provided at the front end of the brake base plate; after the brake base plate and brake drum are fixedly installed, the inner wall of the annular barrier is close to the outer wall of the brake drum, and the annular barrier further prevents mud and sand from entering the inner side of the brake drum.

[0012] Preferably, the outer wall of the brake drum is coated with an anti-rust coating; the anti-rust coating prevents the brake drum from rusting and improves the service life of the brake drum.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: In use, the brake base plate is fixedly installed on the vehicle frame through multiple sets of No. 2 through holes, and then the brake drum body is fixedly connected to the vehicle hub through multiple sets of No. 1 through holes. While the gap between the round hole of the sealing gasket assembly and the vehicle hub is sealed, the gap between the brake drum body and the brake base plate is sealed by the dustproof assembly. The brake structure is inside the brake drum body. In use, the brake base plate and the brake structure are fixed and stationary, and the brake drum body rotates synchronously with the vehicle hub. By operating the brake structure to rub against the inner wall of the brake drum body, the brake drum body drives the vehicle hub to stop rotating, thus achieving braking. The dustproof assembly and the sealing ring assembly cooperate with each other to prevent external mud and sand from entering the interior of the brake drum body, thereby improving its service life. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the isometric structure of this utility model;

[0015] Figure 2 This is an exploded structural diagram of the present invention;

[0016] Figure 3 This is a first enlarged structural schematic diagram of the brake drum body;

[0017] Figure 4 yes Figure 3 A partially enlarged structural diagram of section A in the middle;

[0018] Figure 5 This is a second enlarged structural diagram of the brake drum body;

[0019] Figure 6 This is an enlarged structural diagram of the brake drum body and inner ring, among other structures.

[0020] The following markings are used in the attached diagram: 1. Brake drum body; 2. Brake base plate; 3. Through hole No. 1; 4. Through hole No. 2; 5. Round hole; 6. Inner ring; 7. Outer ring; 8. Metal spiral wound ring No. 1; 9. Metal spiral wound ring No. 2; 10. Convex ring; 11. Annular groove No. 1; 12. Annular groove No. 2; 13. Annular groove; 14. Sealing ring; 15. Groove No. 3; 16. Chamfer No. 1; 17. Chamfer No. 2; 18. Annular enclosure. Detailed Implementation

[0021] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete. Example 1

[0022] like Figures 1 to 6 As shown, a brake drum with a mud and sand intrusion prevention structure according to this utility model includes a brake drum body 1, a brake base plate 2, a first through hole 3, a second through hole 4, and a round hole 5. The front end of the brake drum body 1 is provided with a round hole 5, and multiple sets of first through holes 3 are provided circumferentially at the front end of the brake drum body 1. The brake base plate 2 is provided circumferentially with multiple sets of second through holes 4. It also includes a dustproof component and a sealing gasket component. A dustproof component is provided between the brake drum body 1 and the brake base plate 2. A sealing gasket component is provided inside the round hole 5. A brake structure is provided at the front end of the brake base plate 2.

[0023] The dustproof assembly includes an inner ring 6, an outer ring 7, a first metal spiral wound ring 8, a second metal spiral wound ring 9, a convex ring 10, a first annular groove 11, and a second annular groove 12. The front end of the brake base plate 2 is provided with an inner ring 6 and an outer ring 7 respectively. The outer side wall of the inner ring 6 is provided with a first metal spiral wound ring 8, and the inner side wall of the outer ring 7 is provided with a second metal spiral wound ring 9. The rear end of the brake drum body 1 is provided with a convex ring 10. The inner side wall of the convex ring 10 is provided with a first annular groove 11, and the outer side wall of the convex ring 10 is provided with a second annular groove 12. The first annular groove 11 is adapted to the first metal spiral wound ring 8, and the second annular groove 12 is adapted to the second metal spiral wound ring 9.

[0024] The sealing ring assembly includes an annular groove 13 and a sealing ring 14. The inner wall of the circular hole 5 is provided with an annular groove 13, and the sealing ring 14 is placed inside the annular groove 13.

[0025] In this embodiment, during use, the brake base plate 2 is fixedly installed on the vehicle frame through multiple sets of No. 2 through holes 4. Then, the brake drum 1 is fixedly connected to the vehicle hub through multiple sets of No. 1 through holes 3. While the gap between the sealing gasket assembly's round hole 5 and the vehicle hub is sealed, the gap between the brake drum 1 and the brake base plate 2 is sealed by the dustproof assembly. The brake structure is located inside the brake drum 1. During use, the brake base plate 2 and the brake structure are fixed and stationary, and the brake drum 1 rotates synchronously with the vehicle hub. By operating the brake structure to rub against the inner wall of the brake drum 1, the brake drum 1 drives the vehicle hub to stop rotating, thus achieving braking. The dustproof assembly and the sealing ring assembly cooperate to prevent external mud and sand from entering the interior of the brake drum 1. When the brake base plate 2 is fixed... When installed on the vehicle frame, the brake drum 1 is fixedly installed on the vehicle hub. The convex ring 10 enters between the inner ring 6 and the outer ring 7. At the same time, the first metal spiral ring 8 enters the first annular groove 11, and the second metal spiral ring 9 enters the second annular groove 12. The inner ring 6, outer ring 7, first metal spiral ring 8, and second metal spiral ring 9 cooperate to seal the gap between the brake drum 1 and the brake base plate 2, preventing mud and sand from entering the interior of the brake drum 1 through the gap between the brake drum 1 and the brake base plate 2 and adhering to the brake structure. The brake drum 1 is fitted onto the outer wall of the vehicle hub. The front side of the vehicle hub passes through the round hole 5. The sealing ring 14 seals the gap between the vehicle hub and the inner wall of the round hole 5, preventing mud and sand from entering the interior of the brake drum 1 through the round hole 5. Example 2

[0026] like Figures 1 to 6 As shown, a brake drum with a mud and sand intrusion prevention structure according to this utility model includes a brake drum body 1, a brake base plate 2, a first through hole 3, a second through hole 4, and a round hole 5. The front end of the brake drum body 1 is provided with a round hole 5, and multiple sets of first through holes 3 are provided circumferentially at the front end of the brake drum body 1. The brake base plate 2 is provided circumferentially with multiple sets of second through holes 4. It also includes a dustproof component and a sealing gasket component. A dustproof component is provided between the brake drum body 1 and the brake base plate 2. A sealing gasket component is provided inside the round hole 5. A brake structure is provided at the front end of the brake base plate 2.

[0027] The dustproof assembly includes an inner ring 6, an outer ring 7, a first metal spiral wound ring 8, a second metal spiral wound ring 9, a convex ring 10, a first annular groove 11, and a second annular groove 12. The front end of the brake base plate 2 is provided with an inner ring 6 and an outer ring 7 respectively. The outer side wall of the inner ring 6 is provided with a first metal spiral wound ring 8, and the inner side wall of the outer ring 7 is provided with a second metal spiral wound ring 9. The rear end of the brake drum body 1 is provided with a convex ring 10. The inner side wall of the convex ring 10 is provided with a first annular groove 11, and the outer side wall of the convex ring 10 is provided with a second annular groove 12. The first annular groove 11 is adapted to the first metal spiral wound ring 8, and the second annular groove 12 is adapted to the second metal spiral wound ring 9.

[0028] The sealing ring assembly includes an annular groove 13 and a sealing ring 14. The inner wall of the circular hole 5 is provided with an annular groove 13, and the sealing ring 14 is placed inside the annular groove 13.

[0029] It also includes a third slot 15, which is provided at the front end of the brake drum body 1 and communicates with the annular groove 13.

[0030] It also includes a first chamfer 16 and a second chamfer 17. The first chamfer 16 is provided at the top of the outer side wall of the inner ring 6, and the second chamfer 17 is provided at the top of the inner side wall of the outer ring 7.

[0031] It also includes a ring-shaped enclosure 18, and the front end of the brake base plate 2 is provided with a ring-shaped enclosure 18;

[0032] The outer wall of the brake drum 1 is coated with an anti-rust coating.

[0033] In this embodiment, during use, the brake base plate 2 is fixedly installed on the vehicle frame through multiple sets of No. 2 through holes 4. Then, the brake drum 1 is fixedly connected to the vehicle hub through multiple sets of No. 1 through holes 3. While the gap between the sealing gasket assembly's round hole 5 and the vehicle hub is sealed, the gap between the brake drum 1 and the brake base plate 2 is sealed by the dustproof assembly. The brake structure is located inside the brake drum 1. During use, the brake base plate 2 and the brake structure are fixed and stationary, and the brake drum 1 rotates synchronously with the vehicle hub. By operating the brake structure to rub against the inner wall of the brake drum 1, the brake drum 1 drives the vehicle hub to stop rotating, thus achieving braking. The dustproof assembly and the sealing ring assembly cooperate to prevent external mud and sand from entering the interior of the brake drum 1. When the brake base plate 2 is fixedly installed on the vehicle frame and the brake drum 1 is fixedly installed on the vehicle hub, the convex ring 10 enters between the inner ring 6 and the outer ring 7, and at the same time, the No. 1 metal winding ring 8 enters the No. 1 annular groove. 11. The second metal spiral wound ring 9 enters the second annular groove 12. The inner ring 6, outer ring 7, first metal spiral wound ring 8, and second metal spiral wound ring 9 work together to seal the gap between the brake drum body 1 and the brake base plate 2, preventing mud and sand from entering the interior of the brake drum body 1 through the gap between the brake drum body 1 and the brake base plate 2 and adhering to the brake structure. The brake drum body 1 is fitted onto the outer wall of the hub. The front side of the hub passes through the round hole 5. The sealing ring 14 seals the gap between the hub and the inner wall of the round hole 5, preventing mud and sand from entering the interior of the brake drum body 1 through the round hole 5. When the sealing ring 14 needs to be replaced after a period of use, the staff uses a tool to pass through the third groove 15 and insert it into the annular groove 13 to remove the sealing ring 14. After the brake base plate 2 and the brake drum body 1 are fixedly installed, the inner wall of the annular barrier 18 is close to the outer wall of the brake drum body 1. The annular barrier 18 further prevents mud and sand from entering the interior of the brake drum body 1.

[0034] The sealing ring 14 of the brake drum with a structure to prevent mud and sand intrusion is commercially available. Technical personnel in this industry only need to install and operate it according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0035] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A brake drum with a structure to prevent mud and sand intrusion, comprising a brake drum body (1), a brake base plate (2), a first through hole (3), a second through hole (4), and a round hole (5), wherein the front end of the brake drum body (1) is provided with a round hole (5), and the front end of the brake drum body (1) is provided with multiple sets of first through holes (3) circumferentially, and the brake base plate (2) is provided with multiple sets of second through holes (4) circumferentially, characterized in that, It also includes a dustproof component and a sealing gasket component. A dustproof component is provided between the brake drum (1) and the brake base plate (2). A sealing gasket component is provided inside the round hole (5). A brake structure is provided at the front end of the brake base plate (2).

2. A brake drum with a mud and sand intrusion prevention structure as described in claim 1, characterized in that, The dustproof assembly includes an inner ring (6), an outer ring (7), a first metal spiral ring (8), a second metal spiral ring (9), a convex ring (10), a first annular groove (11), and a second annular groove (12). The front end of the brake base plate (2) is provided with an inner ring (6) and an outer ring (7). The outer side wall of the inner ring (6) is provided with a first metal spiral ring (8), and the inner side wall of the outer ring (7) is provided with a second metal spiral ring (9). The rear end of the brake drum body (1) is provided with a convex ring (10). The inner side wall of the convex ring (10) is provided with a first annular groove (11), and the outer side wall of the convex ring (10) is provided with a second annular groove (12). The first annular groove (11) is adapted to the first metal spiral ring (8), and the second annular groove (12) is adapted to the second metal spiral ring (9).

3. A brake drum with a mud and sand intrusion prevention structure as described in claim 1, characterized in that, The sealing ring assembly includes an annular groove (13) and a sealing ring (14). The inner wall of the circular hole (5) is provided with an annular groove (13), and the sealing ring (14) is placed inside the annular groove (13).

4. A brake drum with a mud and sand intrusion prevention structure as described in claim 3, characterized in that, It also includes a third slot (15), the front end of the brake drum body (1) is provided with a third slot (15), and the third slot (15) is connected to the annular groove (13).

5. A brake drum with a mud and sand intrusion prevention structure as described in claim 2, characterized in that, It also includes a first chamfer (16) and a second chamfer (17). The first chamfer (16) is provided at the top of the outer side wall of the inner ring (6), and the second chamfer (17) is provided at the top of the inner side wall of the outer ring (7).

6. A brake drum with a mud and sand intrusion prevention structure as described in claim 1, characterized in that, It also includes a ring-shaped enclosure (18), and the front end of the brake base plate (2) is provided with a ring-shaped enclosure (18).

7. A brake drum with a mud and sand intrusion prevention structure as described in claim 1, characterized in that, The outer wall of the brake drum (1) is coated with an anti-rust coating.

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