Clutch brake shoe

Abstract

The utility model relates to the technical field of clutches, in particular to a clutch brake shoe. Comprising an arc-shaped tile, the left end, the right end and the rear end of the tile are each provided with a folded edge with the free end extending towards the friction hub, a mounting cavity is formed between the folded edges and the tile, an arc-shaped brake pad is located in the mounting cavity, and the working face of the brake pad protrudes to the outer side of the mounting cavity; grooves corresponding to the protruding strips are formed in the outer edge of the brake pad, the protruding strips are clamped in the corresponding grooves, clamping strips are machined on the opposite end faces of the folded edges at the left end and the right end, clamping grooves are machined in the left end and the right end of the brake pad, and the clamping strips are clamped in the clamping grooves in one sides of the clamping strips. The working face of the brake pad is completed, counter bores do not need to be machined in the brake pad for fixedly installing the brake pad, and the brake pad is convenient to machine.

Description

Technical Field

[0001] The utility model relates to the technical field of clutches, in particular to a clutch brake shoe. Background Art

[0002] Clutches are widely used to brake or transmit power between rotating parts. Mechanical clutches are generally used, with a push mechanism to open and close the clutch. With technological advancements, more and more clutches are now using airbags as the clutch's power source. Regardless of the type of clutch, braking or transmission is achieved through friction plates, which are fixed to the brake shoe.

[0003] The patent document with publication number CN212584167U discloses an anti-loosening brake shoe assembly for a pneumatic tire clutch, comprising a heat dissipation plate, a curved surface is provided on one side of the heat dissipation plate, a brake pad is provided on the outer side of the curved surface, a plurality of mounting holes are opened on the surface of the brake pad, and a plurality of support columns are vertically provided inside the heat dissipation plate, a support block is provided near the inner side of the curved surface of the heat dissipation plate, and a shock absorber seat is installed on one end of the support column near the support block, and a positioning hole is opened on the surface of the support block near the mounting hole, and a fixing mechanism is provided in the heat dissipation plate near the mounting hole, and the fixing mechanism includes a rivet, which is interference fit with the positioning hole, the top of the rivet passes through the top of the support block and is provided with a threaded end, and the threaded end is threadedly connected to a nut; the shock absorber seat includes a shell, a support plate is horizontally provided inside the shell, the bottom end of the support column passes through the top of the shell and pressure plates are provided on both sides, and a spring is provided between the pressure plate and the inner wall of the shell. The heat sink and the brake pad are connected by a fixing mechanism, and countersunk holes are set at intervals on the working surface of the brake pad, which makes the entire working surface incomplete and limits the thickness that can be worn, affecting the friction effect and life. In addition, drilling through holes and countersunk holes is labor-intensive and time-consuming. In addition, when the surface of the brake pad is worn, the countersunk holes of the fixing mechanism will be exposed, which will scratch the friction hub and cause damage to the friction hub.

[0004] To address the aforementioned technical issues, patent publication CN116006590A discloses a dovetail connection method and device for a clutch brake shoe and friction plate. Parallel dovetail grooves are spaced apart on the non-working back surface of the friction plate, the positions of which correspond to the inner holes of the brake shoe. A fixed plate comprises a central base plate and two inclined plates, the angles of which correspond to the angles of the dovetail grooves. Bolt holes are spaced apart on the fixed plate. Connecting bolts are placed in the bolt holes, and the friction plate is placed on the brake shoe. The connecting bolts penetrate through the through holes in the inner hole of the brake shoe. A wrench is used to insert a nut into the inner hole of the brake shoe and screw it into the connecting bolt, thereby securing the friction plate and brake shoe together. However, securing the fixing plate to the brake shoe is cumbersome, and an inner hole must be drilled in the brake shoe. This requires high brake shoe thickness and complicated processing, making it unsuitable for use with small-diameter pneumatic clutches. Utility Model Content

[0005] The main purpose of the utility model is to provide a clutch brake shoe which is easy to install and replace, has a complete working surface, is easy to process and has a large working thickness.

[0006] In order to achieve the above purpose, the technical solution provided by the utility model is:

[0007] A clutch brake shoe comprises an arc-shaped tile, and the left and right ends and the rear end of the tile are processed with folded edges with the free ends extending toward the friction hub, and an installation cavity is formed between the folded edges and the tile. The arc-shaped brake pad is located in the installation cavity, and the working surface of the brake pad protrudes to the outside of the installation cavity. A plurality of ridges are provided on the inner edge of the tile, and grooves corresponding to the ridges are provided on the outer edge of the brake pad. The ridges are clamped in the corresponding grooves. The opposite end surfaces of the folded edges at the left and right ends are processed with clamping strips, and the left and right ends of the brake pad are processed with clamping grooves, and the clamping strip is clamped in the clamping groove on one side.

[0008] Specifically, the outer arc surface of the brake pad is tightly against the inner arc surface of the tile.

[0009] Specifically, ear plates are fixed to the front and rear ends of the outer arc surface of the tile.

[0010] Specifically, the ear plate and the tile are formed integrally.

[0011] Specifically, the folding edges, convex strips, and clamping strips are integrally formed with the tiles.

[0012] Specifically, a mounting hole is provided on the ear plate.

[0013] Specifically, the convex strip and the groove are interference fit.

[0014] Specifically, an arc-shaped inner plate is provided in the brake pad portion in the installation cavity.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The brake pad of the utility model has a complete working surface, and there is no need to process countersinks on the brake pad for fixing and installing the brake pad, so the brake pad is easy to process.

[0017] 2. The brake pad is stabilized in the installation cavity through the cooperation between the convex strips and the grooves, and the cooperation between the clamping strips and the clamping slots. The brake pad is easy to install and replace.

[0018] 3. The multiple folded edges of the tiles can effectively confine the brake pads in the installation cavity, the brake pads have a large working thickness and a long service life.

[0019] 4. By arranging an inner plate in the brake pad part in the installation cavity, the inner plate can increase the structural strength of the brake pad part in the installation cavity. When the brake pad contacts the friction hub, it can prevent the brake pad part in the installation cavity from being damaged by a large impact with the folded edge. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the utility model.

[0021] Figure 2 Schematic diagram of the cross-sectional structure of the tile.

[0022] Figure 3 Schematic diagram of the separate structure of the tile and brake pad.

[0023] The names of the parts in the accompanying drawings are: 1. brake pad, 2. ear plate, 3. folding edge, 4. groove, 5. ridge, 6. card strip, 7. inner plate, 8. tile, 9. card slot. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0025] Example 1: Reference Figure 1-Figure 3 As shown, a clutch brake shoe includes an arc-shaped tile 8. The left and right ends and the rear end of the tile 8 are processed with folded edges 3 with the free ends extending toward the friction hub. A mounting cavity is formed between the folded edges 3 and the tile 8. The arc-shaped brake pad 1 is located in the mounting cavity. The working surface of the brake pad 1 protrudes to the outside of the mounting cavity, and the outer arc surface of the brake pad 1 is tightly against the inner arc surface of the tile 8.

[0026] A plurality of ridges 5 are provided on the inner edge of the tile 8, and a groove 4 corresponding to the ridges 5 is provided on the outer edge of the brake pad 1. The ridges 5 are snap-fitted into the corresponding grooves 4. The ridges 5 and the grooves 4 are interference fit.

[0027] The opposite end surfaces of the folded edges 3 at the left and right ends are processed with clamping strips 6, and the left and right ends of the brake pad 1 are processed with clamping grooves 9, and the clamping strips 6 are clamped in the clamping grooves 9 on one side thereof.

[0028] The folded edge 3 , the convex strip 5 , the clamping strip 6 and the tile 8 are integrally formed.

[0029] The front and rear ends of the outer arc surface of the tile 8 are fixed with ear plates 2. The ear plates 2 are integrally formed with the tile 8. The ear plates 2 are provided with mounting holes.

[0030] Tiles 8 are mounted on the inner side of the pneumatic clutch tube via lugs 2. When installing brake pad 1 into the mounting cavity, align groove 4 with ridge 5 and retaining strip 6 with retaining groove 9. Then, install brake pad 1 into the mounting cavity. Once installed, ridge 5 lies within groove 4, retaining strip 6 lies within retaining groove 9, and brake pad 1 and tiles 8 are stably connected. The interference fit between ridge 5 and groove 4 improves the stability of brake pad 1 within the mounting cavity.

[0031] When replacing the brake pad 1, the brake pad 1 can be directly pulled out from the installation cavity and then replaced.

[0032] Example 2: Based on Example 1, refer to Figure 1 As shown, an arc-shaped inner plate 7 is provided in the brake pad 1 portion in the installation cavity.

[0033] By arranging the inner plate 7 in the brake pad 1 portion in the installation cavity, the inner plate 7 can increase the structural strength of the brake pad 1 portion in the installation cavity. When the brake pad 1 contacts the friction hub, it can prevent the brake pad 1 portion in the installation cavity from generating a large impact with the folded edge 3 and being damaged.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A clutch brake shoe, comprising an arc-shaped shoe (8), characterized in that: The left and right ends and the rear end of the tile (8) are both processed with folding edges (3) with the free ends extending toward the friction hub. A mounting cavity is formed between the folding edges (3) and the tile (8). The arc-shaped brake pad (1) is located in the mounting cavity. The working surface of the brake pad (1) protrudes to the outside of the mounting cavity. A plurality of convex strips (5) are provided on the inner edge of the tile (8). The outer edge of the brake pad (1) is provided with grooves (4) corresponding to the convex strips (5). The convex strips (5) are clamped in the corresponding grooves (4). The opposite end surfaces of the folding edges (3) at the left and right ends are both processed with clamping strips (6). The left and right ends of the brake pad (1) are both processed with clamping grooves (9). The clamping strip (6) is clamped in the clamping groove (9) on one side thereof.

2. A clutch brake shoe according to claim 1, characterized in that: The outer arc surface of the brake pad (1) is tightly against the inner arc surface of the tile (8).

3. The clutch brake shoe according to claim 1, characterized in that: Ear plates (2) are fixed to both the front and rear ends of the outer arc surface of the tile (8).

4. A clutch brake shoe according to claim 3, characterized in that: The ear plate (2) and the tile (8) are integrally formed.

5. The clutch brake shoe according to claim 1, characterized in that: The folding edge (3), the convex strip (5), the clamping strip (6) and the tile (8) are integrally formed.

6. A clutch brake shoe according to claim 3, characterized in that: The ear plate (2) is provided with a mounting hole.

7. The clutch brake shoe according to claim 1, characterized in that: The convex strip (5) and the groove (4) are interference fit.

8. The clutch brake shoe according to claim 1, characterized in that: An arc-shaped inner plate (7) is provided in the brake pad (1) portion in the installation cavity.

Images