Self-lubricating high-wear-resistance high-elasticity buffer block

Abstract

The utility model relates to a self-lubricating high-wear-resistance high-elasticity buffer block which comprises a first block body and a second block body, the size of a first rubber block and the size of a second rubber block are different, a connecting strip is arranged between the top face of the first block body and the top face of the second block body, and the top face of the connecting strip protrudes out of the top face of the first block body and the top face of the second block body. The included angle between the left side of the first block body and the right side of the second block body is 41 degrees, the top face of the first block body and the top face of the second block body are each provided with a protruding anti-fake edge, and the top face of the second block body is provided with a round groove and a strip-shaped groove. According to the utility model, the improvement is ingenious, the design is novel, a combined structure of the first rubber block and the second rubber block is adopted, only four rubber blocks are needed for installation, and the installation efficiency can be improved; the circular bulge and the convex part are used as resisting contact surfaces, and a common buffer block does not have such design.

Description

TECHNICAL FIELD

[0001] The utility model relates to the accessories of motorcycle, concretely relates to self-lubricating high wear resistance high elastic buffer block. BACKGROUND

[0002] Buffer block is the important part on motorcycle wheel hub. The buffer block in prior art is mostly single structure, needs to be installed on the wheel hub, and eight blocks are needed for the single structure, which is inconvenient to install, therefore, the invention is applied. SUMMARY

[0003] In order to solve the above prior art problems, the utility model provides self-lubricating high wear resistance high elastic buffer block, and the above defects can be improved.

[0004] The utility model relates to self-lubricating high wear resistance high elastic buffer block, including first block and second block, the glue block one and glue block two are two different sizes, the connecting strip is arranged between the top surface of first block and second block, the top surface of connecting strip is convex to the top surface of first block and second block, the included angle between the left side of first block and the right side of second block is 41 DEG, the top surface of first block and second block is all set up the anti -fake edge of convex, the top surface of second block sets up circular recess and strip recess.

[0005] Further, the first block and the second block are made of natural rubber + butadiene rubber.

[0006] Further, the first block and the second block are made of natural rubber + butadiene rubber.

[0007] Further, the length of the first block and the second block is 44.4mm.

[0008] Further, the strip recess and the circular recess are filled with lubricant.

[0009] The utility model improves ingeniously, and the design is novel, adopts the combination structure of glue block one and glue block two, and the installation of the structure only needs four blocks, can improve installation efficiency, and the circular convex and the convex part are used as the contact surface, and the general buffer block does not have such design. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is structure schematic view of the utility model.

[0011] Fig. shows: 1 sealed body, 2 reinforcing ring, 3 spring wire, 31 installation recess, 4 lubricating layer, 5 annular groove, 10 outer ring, 20 inner ring. DETAILED DESCRIPTION

[0012] In order to make the purpose, technical scheme and advantages of the utility model clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and examples.

[0013] As shown in Figure 1 and Figure 2 The utility model discloses a self -lubricating high wear -resisting high elastic buffer block, containing first block 1 and second block 2. The first block and second block are heteromorphic structure, and the top surface realizes structural connection through connecting strip 3, the connecting strip top surface forms the outer convex surface, and the height of the convex is higher than the top surface plane of two main blocks. The left side of the first block and the right side of the second block form 41 ° angle, and the straight line distance from the center point to the distal edge of the second block is 75.6 millimeters, the distance from the outer edge of the connecting strip to the center reference point is 67.5 millimeters, and the distance from the inner edge to the center reference point is 58.5 millimeters. The top surface of two main blocks is provided with anti -fake ridge 8, and the top surface of second block is processed with circular groove and strip groove simultaneously, wherein the effective length of strip groove is 8.9 millimeters, and both ends are provided with semicircular port with a radius of 1.7 millimeters, and the radius of circular groove is 5.2 millimeters. The corner portion of each block adopts round corner transition processing, and the corner radius is controlled in the range of 0.5-1.2 millimeters, effectively avoiding stress concentration phenomenon.

[0014] In the specific implementation scheme, the first block and the second block are made of natural rubber (NR) and butadiene rubber (BR) compound, and the material presents black characteristics. Among them, the proportion of natural rubber is 55-65%, and the proportion of butadiene rubber is 35-45%, which is prepared by three-stage mixing process of internal mixer. The product Shore A hardness is controlled in the range of 65-75 degrees, the tensile strength is greater than or equal to 17 MPa, and the elongation at break is greater than or equal to 350%. After 70 DEG C x 70h hot air aging test, the hardness change range is 0-10, the tensile strength retention rate is greater than or equal to 75%, and the elongation rate retention rate is greater than or equal to 75%. In the 70 DEG C x 22h compression permanent deformation test, the deformation rate is less than or equal to 20%. The ozone resistance test conditions are: ozone concentration 50 ± 5pphm, temperature 40 ± 2 DEG C, humidity less than or equal to 60%, and no cracking phenomenon occurs after 20% tensile strain under continuous exposure for 72 hours. Under the working condition of 30000 kilometers of whole vehicle road test, the buffer block assembly surface remains intact, and the wear amount is controlled within 10%, so it has high wear resistance.

[0015] In the preferred embodiment, the first block and the second block are provided with semispherical protrusions 4 with a radius of 4.9 millimeters on the top surface and the bottom surface, and the protrusions are arranged in an equilateral triangular array with a center distance of 12.8 millimeters, and the protrusion height tolerance is controlled within ± 0.15 millimeters.

[0016] In the preferred embodiment, the axial length of the first block and the second block is accurately set to 44.4 mm, with a tolerance range of ±0.25 mm, and the thickness of the main block is 18.6 mm, ensuring the matching accuracy with the mounting base.

[0017] In the preferred embodiment, the strip-shaped groove and the circular groove are internally pre-installed with a solid lubricant filling layer, the thickness of the filling layer is 1.2-1.8 mm, the filling layer is made of graphene composite polytetrafluoroethylene material, and the friction coefficient is ≤0.12. The surface of the lubricant layer is provided with a 0.3 mm thick rubber sealing film, which can naturally break and release the lubricating substance after being pressed 500-800 times.

[0018] The buffer block of the scheme has high wear resistance and realizes multidirectional elastic compensation function through special-shaped structure design. Through test verification, under the working condition of rated load 300 kg, after 10^5 times of cyclic compression, the shape size retention rate is ≥95%, and the dynamic elastic modulus attenuation rate is ≤8%.

Claims

1. A self-lubricating high wear resistant high elastic buffer block, characterized in that: It comprises a first block and a second block, the first block and the second block are different in size, a connecting strip is arranged between the top surfaces of the first block and the second block, the top surface of the connecting strip is convex to the top surfaces of the first block and the second block, the included angle between the left side of the first block and the right side of the second block is 41°, the top surfaces of the first block and the second block are provided with convex anti-fake edges, and the top surface of the second block is provided with a circular groove and a strip-shaped groove.

2. The self-lubricating high wear resistant high elastic buffer block according to claim 1, characterized in that: The top and bottom surfaces of the first block and the second block are provided with protrusions.

3. The self-lubricating high wear resistant high elastic buffer block according to claim 1, characterized in that: The length of the first block and the second block is 44.4mm.

4. The self-lubricating high wear resistant high elastic buffer block according to claim 1, characterized in that: The strip-shaped groove and the circular groove are filled with lubricant.

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