Ultrahigh-elasticity drum type friction plate

Abstract

The utility model discloses an ultrahigh-elasticity drum type friction plate which comprises a rubber particle layer, a first organic fiber net-shaped framework is embedded in the left side of the rubber particle layer, and a second organic fiber net-shaped framework is embedded in the right side of the rubber particle layer. A second graphite filling material block and a third graphite filling material block are embedded in the middle of the rubber particle layer; a first graphite filling material block is embedded in the first organic fiber net-shaped framework, and a fourth graphite filling material block and a fifth graphite filling material block are embedded in the second organic fiber net-shaped framework; the rubber particle layer serves as a base structure of the friction plate, the first organic fiber net-shaped framework and the second organic fiber net-shaped framework serve as supporting structures of the friction plate, and the first graphite filling material block, the second graphite filling material block, the third graphite filling material block and the fifth graphite filling material block serve as auxiliary structures of the friction plate, so that the deformation resistance is improved on the basis that the strength of the friction plate is not reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to brake pad technical field, especially relate to a super high elasticity drum type friction plate. BACKGROUND

[0002] The drum type brake pad used by conventional commercial vehicles is hard in texture and has good mechanical strength, and the product is basically fixed in shape size (such as the inner arc surface of the drum type brake pad) after processing. Although the good mechanical strength can ensure that the product is not easy to be damaged under the action of local external force, under special working conditions, such as heavy load conditions, the friction plate and the shoe iron deform integrally, at this time, due to the weak resistance to deformation of the hard material, the shoe iron is more likely to be broken due to deformation, so the material with better resistance to deformation is more difficult to break, and further improvement is needed. SUMMARY

[0003] The utility model provides a super high elasticity drum type friction plate, it is the drum type brake pad with high elasticity, low modulus, because its resistance to deformation ability will be better, namely the greater breaking deflection, therefore, when the shoe iron deforms, it is more difficult to break.

[0004] To solve the above problems, the technical scheme provided by the utility model is as follows:

[0005] The utility model discloses a super high elasticity drum type friction plate, including rubber particle layer (1), the left side of rubber particle layer (1) is embedded with first organic fiber net skeleton (2), the right side of rubber particle layer (1) is embedded with second organic fiber net skeleton (3), the middle position of rubber particle layer (1) is embedded with second graphite filling material block (5) and third graphite filling material block (6);First graphite filling material block (4) is embedded in the first organic fiber net skeleton (2), and fourth graphite filling material block (7) and fifth graphite filling material block (8) are embedded in the second organic fiber net skeleton (3).

[0006] The rubber particle layer (1) is used as the base structure of the friction plate, the first organic fiber net skeleton (2) and the second organic fiber net skeleton (3) are used as the support structure of the friction plate, and the first graphite filling material block (4), the second graphite filling material block (5), the third graphite filling material block (6), the fourth graphite filling material block (7) and the fifth graphite filling material block (8) are used as the auxiliary structure of the friction plate, so that the friction plate has the resistance to deformation on the basis of not decreasing in strength.

[0007] In an optional embodiment of the utility model, the first organic fiber net skeleton (2) and the second organic fiber net skeleton (3) are irregular pattern structures.

[0008] In an optional embodiment of the utility model, the first graphite filling material block (4), the second graphite filling material block (5), the third graphite filling material block (6), the fourth graphite filling material block (7) and the fifth graphite filling material block (8) are one of a triangular structure, a trapezoidal structure, a rectangular structure or a circular structure.

[0009] Compared with the prior art, the utility model embodiment provides a kind of superhigh elasticity drum friction plate, with the following beneficial effects: rubber particle layer is as the base structure of friction plate, first organic fiber net skeleton and second organic fiber net skeleton are as the support structure of friction plate, first graphite filling material block, second graphite filling material block, third graphite filling material block, fourth graphite filling material block and fifth graphite filling material block are as the auxiliary structure of friction plate, so that the ability of resisting deformation is increased on the basis that the strength of friction plate does not decline.The main material formula of superhigh elasticity drum friction plate is (weight percentage): synthetic rubber particle 30-70%, flexible fiber (5-25%), high bounce rate synthetic graphite 5-15%, phenolic resin 7-15%, flaky graphite 3-5%, chromite 3-5%, nitrile rubber powder 5-10%, friction aid 5-10%, glass fiber 3-7%. BRIEF DESCRIPTION OF DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the following will briefly introduce the drawings needed to be used in the description of embodiments or prior art. Obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0011] Figure 1 It is a top view of a kind of superhigh elasticity drum friction plate provided by the embodiment of the application.

[0012] Figure 2 It is a sectional view of A1-A2 in Figure 1 DETAILED DESCRIPTION

[0013] The technical solutions in the embodiments of the application will be described clearly and completely in the following with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only some embodiments of the application, not all. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the application.

[0014] As Figure 1 and Figure 2 ​The utility model discloses an ultrahigh elasticity drum type friction piece, including rubber particle layer 1, the left side of rubber particle layer 1 is embedded with first organic fiber net framework 2, the right side of rubber particle layer 1 is embedded with second organic fiber net framework 3, the middle position of rubber particle layer 1 is embedded with second graphite filling material block 5 and third graphite filling material block 6, first organic fiber net framework 2 is embedded with first graphite filling material block 4, and second organic fiber net framework 3 is embedded with fourth graphite filling material block 7 and fifth graphite filling material block 8.

[0015] The rubber particle layer 1 is used as the base structure of the friction piece, the first organic fiber net framework 2 and the second organic fiber net framework 3 are used as the support structure of the friction piece, and the first graphite filling material block 4, the second graphite filling material block 5, the third graphite filling material block 6, the fourth graphite filling material block 7 and the fifth graphite filling material block 8 are used as the auxiliary structure of the friction piece, so that the friction piece has the ability of resisting deformation on the basis of not reducing the strength.

[0016] The first organic fiber net framework 2 and the second organic fiber net framework 3 are irregular pattern structures, and the first graphite filling material block 4, the second graphite filling material block 5, the third graphite filling material block 6, the fourth graphite filling material block 7 and the fifth graphite filling material block 8 are one of a triangular structure, a trapezoidal structure, a rectangular structure or a circular structure.

[0017] The main material formula of the ultrahigh elasticity drum type friction piece is as follows (in percentage by weight): synthetic rubber particles 30-70%, flexible fiber (5-25%), high rebound rate synthetic graphite 5-15%, phenolic resin 7-15%, flaky graphite 3-5%, chromite 3-5%, nitrile rubber powder 5-10%, friction aid 5-10%, and glass fiber 3-7%.

[0018] 1. The synthetic rubber particles are obtained by using a double roller mill to blend nitrile rubber, styrene-butadiene rubber, natural rubber, EVA rubber, acrylic resin and liquid natural rubber, and adding related aids (such as vulcanizing agent, sulfur, zinc oxide, antioxidant, filler and the like) for adjusting performance.

[0019] 2. The fiber includes one or more of aramid fiber, acrylic fiber, hemp fiber, cellulose fiber and glass fiber.

[0020] 3. The synthetic graphite used is high rebound rate synthetic graphite, that is, the rebound rate after compression is 20-40%, and different synthetic graphites with different rebound rates need to be matched with different rubber matrices.

[0021] 4. The finished product is made by hot press forming process, the forming pressure is 100 kg / cm2, the forming temperature is 160℃, and the static pressure time is 10 minutes.

[0022] Table 1 Material parameters of friction plate

[0023] Blank Example Example 1 Example 2 Phenolic resin 13 12 13 Flake graphite 5 3 3 Aramid fiber (flexible fiber) 0 2 0 Hemp fiber (flexible fiber) 0 6 12 Glass fiber 10 4 3 Nitrile rubber powder 7 5 5 Chromite 5 3 3 High rebound rate synthetic graphite 11 5 Conventional synthetic graphite 11 Synthetic rubber particles 0 36 45 Friction aid 22 11 11 Calcium carbonate filler 27 7 0 Total 100 100 100

[0024] Table 2 Test results

[0025] Blank Example Example 1 Example 2 Friction coefficient μop 10.35 μop 10.36 μop 10.35 Wear / g 1.75 1.26 1.18 Bending strength / Mpa 46 52 49 Breaking deflection / mm 0.48 1.69 2.01

[0026] From the material parameters in Table 1 and the test results in Table 2, it can be seen that the friction coefficients of Example 1 and Example 2 are comparable to the blank example, but the wear is lower. Moreover, in the bending strength test, although the bending strength of Example 1 and 2 is similar to that of the blank example, the deformation at break is greatly increased, which is about 3 times more than that of the blank example. This shows that under the same deformation, the conventional product may have already broken, but the high-elasticity formula has not yet reached the deformation at break.

[0027] In summary, although the utility model has been disclosed as above with preferred embodiments, the above preferred embodiments are not intended to limit the utility model, and those skilled in the art can make various modifications and decorations without departing from the spirit and scope of the utility model. Therefore, the protection scope of the utility model is subject to the scope defined by the claims.

Claims

1. An ultra-high elasticity drum-type friction plate, characterized by, Including rubber particle layer (1), the left side of the rubber particle layer (1) is embedded with first organic fiber network skeleton (2), the right side of the rubber particle layer (1) is embedded with second organic fiber network skeleton (3), the middle position of the rubber particle layer (1) is embedded with second graphite filling material block (5) and third graphite filling material block (6);The first organic fiber network skeleton (2) is embedded with first graphite filling material block (4), the second organic fiber network skeleton (3) is embedded with fourth graphite filling material block (7) and fifth graphite filling material block (8); The rubber particle layer (1) is used as the base structure of the friction plate, the first organic fiber network skeleton (2) and the second organic fiber network skeleton (3) are used as the support structure of the friction plate, and the first graphite filling material block (4), the second graphite filling material block (5), the third graphite filling material block (6), the fourth graphite filling material block (7) and the fifth graphite filling material block (8) are used as the auxiliary structure of the friction plate, so that the friction plate increases the ability to resist deformation on the basis of not decreasing the strength.

2. A superelastic drum brake lining according to claim 1, wherein The first organic fiber network skeleton (2) and the second organic fiber network skeleton (3) are irregular pattern structures.

3. The ultra-high elasticity drum-type friction plate according to claim 1, characterized in that, The first graphite filling material block (4), the second graphite filling material block (5), the third graphite filling material block (6), the fourth graphite filling material block (7) and the fifth graphite filling material block (8) are one of triangular structure, trapezoidal structure, rectangular structure or circular structure.

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