Bimetal alloy shaft sleeve

Abstract

The utility model relates to the field of bimetal bearings, in particular to a bimetal alloy shaft sleeve which comprises a base plate and a friction layer, a plurality of convex rings are arranged on the base plate at intervals, the section of each convex ring is in an isosceles trapezoid shape, the friction layer is arranged between two convex rings or between the convex rings and the edge of the base plate, and the friction layer is arranged between the two convex rings and the edge of the base plate. The thickness of the friction layer is consistent with that of the protruding ring, an oil groove is formed in the protruding ring, and the width of the oil groove is not larger than that of the inner face of the protruding ring. Due to the fact that the protruding ring is arranged, the oil groove can be formed in the protruding ring, and the situation that a rotating shaft is scratched by rough edges due to cutting machining on the friction layer is avoided; the cross section of the convex ring is in the shape of an isosceles trapezoid, so that the inner surface of the oil groove is kept smooth and is not easy to break.

Description

TECHNICAL FIELD

[0001] The utility model relates to bimetal bearing field especially relates to a bimetal alloy shaft sleeve. BACKGROUND

[0002] The sliding bearing is the bearing that works under the sliding friction. The sliding bearing works smoothly, reliably, and noiselessly. Under the liquid lubrication condition, the sliding surface is separated by the lubricating oil and does not have direct contact, and the oil film can greatly reduce the friction loss and the surface wear, and the oil film also has a certain vibration absorption capacity. The bimetal bearing is a shaft sleeve processed by the powder sintering technology, the inner layer material has good lubricating property, and the outer layer material has good mechanical property, so that the bimetal bearing can have good self-lubricating property under the condition of guaranteeing the structural strength.

[0003] At present, some bimetal bearings adopt the powder sintering to sinter another metal material on the metal base plate, but if the oil groove is processed, the sintered metal layer is not suitable for cutting processing, the edge is easy to break, and the rough edge is generated, and the rotating shaft is scratched. Therefore, it is necessary to improve such a structure to overcome the above defects. SUMMARY

[0004] The utility model discloses a bimetal alloy shaft sleeve which overcomes the defects of the prior art.

[0005] A bimetal alloy shaft sleeve, comprising a base plate and a friction layer, a plurality of convex rings are arranged on the base plate at intervals, the cross section of the convex ring is isosceles trapezoidal, the friction layer is arranged between two convex rings or between the convex ring and the edge of the base plate, the thickness of the friction layer is consistent with the thickness of the convex ring, the convex ring is provided with an oil groove, and the width of the oil groove is not greater than the width of the inner surface of the convex ring.

[0006] In the above technical solution, the base plate serves as a mechanism layer for guaranteeing the hardness and tensile strength and other mechanical properties of the finished product; the friction layer serves as a surface directly contacting the rotating shaft for guaranteeing the surface properties such as friction resistance; the convex ring is arranged to leave the base plate material in the processing position of the oil groove, avoiding turning processing on the friction layer; the cross section of the convex ring is isosceles trapezoidal, so that the side wall of the oil groove is made of the base plate material, guaranteeing the smoothness of the side wall of the processed oil groove; the oil groove is used for setting lubricating oil for lubrication; and the width of the oil groove is not greater than the width of the inner surface of the convex ring for avoiding turning to the friction layer.

[0007] The utility model further provides that the depth of the oil groove is less than the thickness of the convex ring.

[0008] In the above technical solution, the depth of the oil groove is less than the thickness of the convex ring, so that the oil groove does not affect the structural strength of the outer base plate.

[0009] A further feature of this invention is that the inclination angle of the two inclined surfaces of the convex ring is 45 degrees.

[0010] In the above technical solution, the inclination angle of the two inclined surfaces of the convex ring is 45 degrees, which makes it less likely for the oil groove to deform after the friction layer is compressed and force is applied to the inclined surfaces of the convex ring.

[0011] A further feature of this invention is that the number of the convex rings is three.

[0012] In the above technical solution, the number of convex rings is three, which are used to set three oil grooves.

[0013] A further feature of this invention is that the friction layer is provided with a plurality of oil holes.

[0014] In the above technical solution: the oil hole is used to hold liquid or solid lubricating materials.

[0015] A further feature of this invention is that a graphite column is embedded in the oil hole.

[0016] In the above technical solution: the graphite column is a solid lubricating material.

[0017] A further feature of this invention is that the length of the graphite column is the same as the depth of the oil hole.

[0018] In the above technical solution, the length of the graphite column is consistent with the depth of the oil hole, so that the graphite column will not hinder the assembly of the present invention and the rotating shaft.

[0019] This utility model discloses a bimetallic alloy bushing, which, compared with the prior art:

[0020] 1. By setting a convex ring, the oil groove can be set on the convex ring, thereby avoiding the rough edges that would scratch the rotating shaft due to cutting on the friction layer;

[0021] 2. This utility model also sets the cross-section of the convex ring to an isosceles trapezoid, so that the inner surface of the oil groove remains smooth and not easily broken. Attached Figure Description

[0022] Fig. 1 This is a perspective view of the present utility model;

[0023] Fig. 2 This is a cross-sectional schematic diagram of the present invention;

[0024] Fig. 3 This is a cross-sectional schematic diagram of the substrate of this utility model.

[0025] Corresponding component name indicated by figure number and letter: 10 - substrate; 101 - convex ring; 102 - oil groove; 20 - friction layer; 201 - oil hole; 30 - graphite column. DETAILED DESCRIPTION

[0026] The embodiments of the utility model are described in detail below, and the embodiments are implemented on the premise of the technical scheme of the utility model, detailed implementation modes and specific operation processes are given, but the protection scope of the utility model is not limited to the following embodiments.

[0027] As Figs. 1-3 shown, the utility model provides a bimetallic alloy shaft sleeve, including substrate 10 and friction layer 20, the substrate 10 is spaced apart and is provided with a plurality of convex rings 101, and the section of convex ring 101 is isosceles trapezoid, the friction layer 20 is set up between two convex rings 101 or is between convex ring 101 and the edge of substrate 10, the thickness of friction layer 20 is consistent with the thickness of convex ring 101, oil groove 102 is set up on convex ring 101, and the width of oil groove 102 is not greater than the width of the inner face of convex ring 101. Among them, the friction layer 20 keeps contact with the side of two adjacent convex rings 101, and the material of substrate 10 is low carbon steel, the material of friction layer 20 is lead tin bronze alloy, and friction layer 20 is sintered to substrate 10 by powder.

[0028] As Figs. 1-3 shown, the utility model provides a bimetallic alloy shaft sleeve, and the depth of oil groove 102 is less than the thickness of convex ring 101.

[0029] As Figs. 1-3 shown, the utility model provides a bimetallic alloy shaft sleeve, and the inclination angle of two inclined planes of convex ring 101 is 45 degrees.

[0030] As Figs. 1-3 shown, the utility model provides a bimetallic alloy shaft sleeve, and the number of convex ring 101 is three.

[0031] As Figs. 1-3 shown, the utility model provides a bimetallic alloy shaft sleeve, and a plurality of oil holes 201 are set up on friction layer 20. Among them, oil hole 201 can be made by stamping or by setting corresponding structure on substrate 10 in advance and then sintering.

[0032] As Figs. 1-3 shown, the utility model provides a bimetallic alloy shaft sleeve, and graphite column 30 is inlaid in oil hole 201.

[0033] As Figs. 1-3As shown, the bimetallic alloy shaft sleeve, the length of graphite column 30 and the depth of oil hole 201 is consistent.

[0034] The working principle of the utility model is:

[0035] a) the utility model is made when;

[0036] b) first sintering friction layer on the substrate;

[0037] c) and then on the convex ring car out oil groove;

[0038] d) the substrate is rolled into a shaft sleeve;

[0039] e) the utility model and the rotating shaft are installed and matched;

[0040] f) make the rotating shaft contact with the friction layer.

[0041] The above, only for the preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this, any skilled in the art person in the utility model disclosed in the technical range, according to the utility model technical scheme and the utility model concept are equivalent to replace or change, all should be covered in the protection scope of the utility model.

[0042] It should be noted that in this paper, such as first and second relationship terms such as only to distinguish one entity or operation from another entity or operation, and does not necessarily require or imply that there is any such actual relationship or order between the entity or operation.And, the term "includes", "contains" or any other variant is intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements, not only includes those elements, but also includes other elements not explicitly listed, or also includes the inherent elements of such process, method, article or equipment.Under no more limit, the element defined by the sentence "including a" does not exclude the existence of other identical elements in the process, method, article or equipment including the element.

Claims

1. A bimetallic alloy bushing characterized by: The application relates to a friction plate, which comprises a substrate (10) and a friction layer (20), the substrate (10) is provided with a plurality of convex rings (101) at intervals, the cross section of the convex ring (101) is isosceles trapezoidal, the friction layer (20) is arranged between two convex rings (101) or between a convex ring (101) and the edge of the substrate (10), the thickness of the friction layer (20) is consistent with the thickness of the convex ring (101), the convex ring (101) is provided with an oil groove (102), and the width of the oil groove (102) is not greater than the width of the inner surface of the convex ring (101).

2. A bimetallic alloy bushing according to claim 1, characterized in that: The depth of the oil groove (102) is less than the thickness of the convex ring (101).

3. A bimetallic alloy bushing according to claim 1, wherein: The inclination angle of the two inclined surfaces of the convex ring (101) is 45 degrees.

4. A bimetallic alloy bushing according to claim 1, wherein: The number of the convex rings (101) is three.

5. A bimetallic alloy bushing according to claim 1 wherein: The friction layer (20) is provided with a plurality of oil holes (201).

6. A bimetallic alloy bushing according to claim 5, wherein: The oil hole (201) is inlaid with a graphite column (30).

7. A bimetallic alloy bushing according to claim 6, wherein: The length of the graphite column (30) is consistent with the depth of the oil hole (201).

Images