Drum brake shoe with efficient heat dissipation function

Abstract

The utility model relates to an efficient heat dissipation drum brake shoe which comprises a shoe and a lining arranged on the shoe in a sliding mode, a sliding groove is formed in the surface of the shoe, a sliding strip used for being connected into the sliding groove in a sliding mode is arranged on the upper surface of the lining, a limiting block is arranged on the surface of the shoe in a sliding mode, and clamping blocks are arranged on the two sides of the limiting block in a rotating mode. Racks are arranged on the surfaces of the limiting blocks and the surfaces of the sliding strips, the limiting blocks drive the clamping blocks to rotate while sliding towards the sliding strips, the clamping blocks are used for limiting and fixing the limiting blocks while the limiting blocks are meshed with the racks of the sliding strips, and the problems that the gaskets are fixed through fastening bolts, the bolts are loosened after long-time use, or the gaskets are not stably fixed, and the service life of the gaskets is prolonged are solved. And the safety cannot be guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of brake shoes, in particular to a drum brake shoe with high-efficiency heat dissipation. Background Art

[0002] The brake shoe is a friction pair of drum brakes, which cooperates with the brake drum to realize the braking function. In addition to the strength and rigidity required as a component, it should also have the highest and most stable friction coefficient, as well as appropriate wear resistance, heat resistance, heat dissipation and heat capacity.

[0003] A Chinese utility model patent with application publication number CN218935090U discloses a new brake shoe, including a brake shoe plate and a friction lining, the brake shoe plate includes an arc-shaped flange, a disassembly plate in an arc-shaped arrangement is detachably connected to the flange, a side surface of the flange is provided with a plurality of slide grooves inwardly, the disassembly plate includes a plurality of sliders slidably connected to the slide grooves, the sliders are separated from the slide grooves to separate the disassembly plate from the flange, and a plurality of heat dissipation fins arranged toward the flange are fixedly connected to one side of the arc-shaped concave surface of the disassembly plate near the opening of the slide groove. The utility model enables the heat on the friction lining to be transferred to the heat dissipation fins through the disassembly plate, thereby increasing the heat exchange area with the outside, making the heat dissipation of the brake shoe more efficient, and improving its service life.

[0004] However, the inventors found that the device has the following problems: the lining is fixed by tightening bolts, and after long-term use, the bolts become loose or cause the lining to be fixed unstable, and safety cannot be guaranteed. Utility Model Content

[0005] The utility model aims to solve the deficiencies in the prior art and invents a drum brake shoe with high heat dissipation, comprising a horseshoe and a lining slidably arranged on the horseshoe, a slide groove being provided on the surface of the horseshoe, a slide bar slidably connected to the slide groove being provided on the lining, a horseshoe surface being slidably arranged on a limit block on the other side of the slide bar for limiting, a rack being provided on the limit block and the slide bar surface, the slide bar being limited by sliding the limit block slidably arranged on the surface of the horseshoe toward the clamping block so that the racks of the two are meshed, and clamping blocks for limiting the limit block are rotatably provided on both sides of the limit block.

[0006] In response to the above technical problems, the technical solution adopted by the utility model is as follows: a drum brake shoe with efficient heat dissipation, including a horseshoe and a lining slidably arranged on the horseshoe, the surface of the horseshoe is provided with a slide groove, the upper surface of the lining is provided with a slide bar for sliding connection in the slide groove, a limit block is slidably arranged on the surface of the horseshoe, and clamping blocks are rotatably arranged on both sides of the limit block, and racks are arranged on the surface of the limit block and the slide bar, and the limit block drives the clamping block to rotate while sliding toward the slide bar, and the clamping block is used to limit and fix the limit block while the limit block is meshed with the rack of the slide bar.

[0007] As a preferred embodiment, a hinge seat is provided on the surface of the horseshoe, the clamping block is rotatably provided on the hinge seat, the clamping block is "L"-shaped, the upper end of the clamping block is an inclined surface, and a "T"-shaped clamping strip is provided on the upper end of the limit block.

[0008] As a preference, a sliding rod is provided on the horseshoe, sliding plates are provided on both sides of the limit block, and the sliding plates are slidably provided on the sliding rod.

[0009] As a preferred embodiment, shoe plates are provided on both sides of the horseshoe surface, and a plurality of reinforcing ribs are provided between the shoe plates and the horseshoe.

[0010] As a preferred embodiment, a plurality of heat dissipation holes are provided on the contact surface between the horseshoe and the lining.

[0011] As a preferred embodiment, a torsion spring is provided at the hinge between the clamping block and the hinge seat.

[0012] As a preference, a spring sleeved on a slide rod is provided between the sliding plate and the horseshoe.

[0013] Beneficial effects of the utility model:

[0014] 1. A slide bar is arranged on the horseshoe, and a limit block is slidably arranged on the slide bar through sliding plates on both sides. Racks are arranged on the surfaces of the limit block and the slide bar. After the lining slides in the slide groove through the slide bar, the limit block is pressed to make the rack of the limit block mesh with the rack of the slide bar, so that the lining is fixed more stably.

[0015] 2. By arranging an articulated seat on the surface of the horseshoe, the articulated seat is arranged on both sides of the limit block, and a card block is hingedly arranged on the articulated seat. The card block is "L"-shaped and the upper end is inclined. A torsion spring is arranged at the hinge of the card block. The limit block drives the card block to rotate during the process of pressing and engaging with the slide bar. After the rack is engaged and fixed, the card block limits the limit block through the rebound of the torsion spring to prevent the limit block from popping out.

[0016] In summary, the device has the advantages of more stable rack engagement and prevention of loosening, and is particularly suitable for the field of brake shoe technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the structure of a drum brake shoe with high efficiency heat dissipation;

[0019] Figure 2 It is a partial cross-sectional view of a brake shoe of a drum brake with high efficiency in heat dissipation;

[0020] Figure 3 It is a schematic diagram of the partial structure of a drum brake shoe with high efficiency heat dissipation;

[0021] Figure 4 for Figure 1 A partial enlarged view of point A in the middle.

[0022] The attached drawings are marked as follows: 1. horseshoe; 2. lining; 3. slide groove; 4. slide bar; 5. limit block; 6. clamping block; 21. hinge seat; 22. clamping bar; 31. slide rod; 32. sliding plate; 41. shoe plate; 42. reinforcing rib; 51. heat dissipation hole; 71. spring. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present utility model are clearly and completely described below in conjunction with the accompanying drawings.

[0024] Embodiment 1

[0025] like Figures 1 to 4 As shown, a drum brake shoe with efficient heat dissipation includes a horseshoe 1 and a lining 2 slidably arranged on the horseshoe 1, the surface of the horseshoe 1 is provided with a slide groove 3, the upper surface of the lining 2 is provided with a slide bar 4 for sliding connection in the slide groove 3, a limit block 5 is slidably arranged on the surface of the horseshoe 1, and clamping blocks 6 are rotatably arranged on both sides of the limit block 5, and racks 7 are arranged on the surfaces of the limit block 5 and the slide bar 4, and the limit block 5 drives the clamping block 6 to rotate while sliding toward the slide bar 4, and the clamping block 6 is used to limit and fix the limit block 5 while the limit block 5 is engaged with the rack 7 of the slide bar 4.

[0026] like Figure 3 As shown, a hinge seat 21 is provided on the surface of the horseshoe 1, and the clamping block 6 is rotatably provided on the hinge seat 21. The clamping block 6 is "L"-shaped, and the upper end of the clamping block 6 is inclined. A "T"-shaped clamping strip 22 is provided on the upper end of the limit block 5.

[0027] It is worth mentioning that, by making the clamping block 6 into an “L” shape with an inclined upper end, the limit block 5 can be lowered and at the same time, the clamping block 6 can be driven to rotate through the clamping strip 22 .

[0028] like Figure 4 As shown, a slide bar 31 is provided on the horseshoe 1 , and sliding plates 32 are provided on both sides of the limit block 5 , and the sliding plates 32 are slidably provided on the slide bar 31 .

[0029] It is worth mentioning that by slidably setting the sliding plates 32 on both sides of the limiting block 5 and slidably setting the sliding rods 31 on the sliding plates 32, the sliding of the limiting block 5 can be made more stable.

[0030] like Figure 1 As shown, shoe plates 41 are provided on both sides of the surface of the horseshoe 1 , and a plurality of reinforcing ribs 42 are provided between the shoe plates 41 and the horseshoe 1 .

[0031] It is worth mentioning that, by providing a plurality of reinforcing ribs 42 between the shoe plate 41 and the horseshoe 1 , deformation of the shoe plate 41 can be prevented.

[0032] like Figure 1 As shown, a plurality of heat dissipation holes 51 are provided on the contact surface between the shoe 1 and the lining 2 .

[0033] It is worth mentioning that by providing a plurality of heat dissipation holes 51 on the contact surface between the shoe 1 and the lining 2, the heat generated by the friction of the lining can be dissipated through the heat dissipation holes 51 to prevent the lining from overheating.

[0034] A torsion spring is provided at the hinged position between the clamping block 6 and the hinge seat 21 .

[0035] It is worth mentioning here that by providing a torsion spring at the hinge between the clamping block 6 and the hinge seat 21, the clamping block 6 can be driven by the torsion spring to reset and limit the limit block 5 after the limit block 5 completes the limiting.

[0036] like Figure 4 As shown, a spring 71 sleeved on the slide rod 31 is provided between the slide plate 32 and the shoe 1 .

[0037] It is worth mentioning here that by providing a spring 71 sleeved on the slide rod 31 between the sliding plate 32 and the horseshoe 1, when the lining 2 needs to be removed, the limit block 5 can be disengaged from the lining 2 by pulling open the clamping block 6 and resetting the limit block 5 through the spring 71.

[0038] In the description of the present invention, it should be understood that the terms "front and back", "left and right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the equipment or components referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the utility model.

[0039] Of course, in this technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "one" should not be understood as a limitation on the number.

[0040] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this. Any changes or substitutions that can be easily thought of by technicians familiar with the technical field under the technical tips of the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A drum brake shoe with high heat dissipation efficiency, comprising a shoe (1) and a lining (2) slidably arranged on the shoe (1), characterized in that: The surface of the horseshoe (1) is provided with a slide groove (3), the upper surface of the lining (2) is provided with a slide bar (4) for sliding connection in the slide groove (3), a limit block (5) is slidably provided on the surface of the horseshoe (1), and clamping blocks (6) are rotatably provided on both sides of the limit block (5), and racks (7) are provided on the surfaces of the limit block (5) and the slide bar (4), and the limit block (5) drives the clamping block (6) to rotate while sliding toward the slide bar (4), and the clamping block (6) is used to limit and fix the limit block (5) while the limit block (5) is meshed with the rack (7) of the slide bar (4).

2. The drum brake shoe with high heat dissipation according to claim 1, characterized in that: The surface of the horseshoe (1) is provided with an articulated seat (21), the clamping block (6) is rotatably arranged on the articulated seat (21), the clamping block (6) is in an "L" shape, the upper end of the clamping block (6) is in an inclined surface, and a "T"-shaped clamping strip (22) is arranged at the upper end of the clamping block (6).

3. The drum brake shoe with high heat dissipation according to claim 1, characterized in that: The horseshoe (1) is provided with a sliding rod (31), and sliding plates (32) are provided on both sides of the limit block (5), and the sliding plates (32) are slidably arranged on the sliding rod (31).

4. The drum brake shoe with high heat dissipation according to claim 1, characterized in that: Shoe plates (41) are provided on both sides of the surface of the horseshoe (1), and a plurality of reinforcing ribs (42) are provided between the shoe plates (41) and the horseshoe (1).

5. The drum brake shoe with high heat dissipation according to claim 1, characterized in that: A plurality of heat dissipation holes (51) are provided on the contact surface between the horseshoe (1) and the lining (2).

6. The drum brake shoe with high heat dissipation according to claim 2, characterized in that: A torsion spring is provided at the hinged position between the clamping block (6) and the hinged seat (21).

7. The drum brake shoe with high heat dissipation according to claim 3, characterized in that: A spring (71) sleeved on the slide rod (31) is provided between the slide plate (32) and the horseshoe (1).

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