Steel-copper self-lubricating composite sleeve

Abstract

The utility model discloses a steel-copper self-lubricating composite sleeve which comprises a steel sleeve located on the outer side and a copper sleeve located on the inner side of the steel sleeve. A cavity is formed in the steel sleeve, a lubricating piece is arranged in the cavity, a plurality of through holes are formed in the copper sleeve along the side wall, the through holes are communicated with the cavity, and the lubricating piece is arranged in the through holes; a plurality of lubricating spiral grooves are formed in the inner wall of the copper sleeve, and the spiral angles of the lubricating spiral grooves are different. The graphite sleeve can store more graphite powder, is long in lubricating time, does not need to be frequently disassembled and loaded with the graphite powder, can replace a traditional copper sleeve, saves a large amount of copper, reduces the production cost, and is good in lubricating effect.

Description

Technical Field

[0001] The utility model relates to a lubricating shaft sleeve, in particular to a steel-copper self-lubricating composite sleeve. Background Art

[0002] Steel-copper composite bushings are more popular because they have the good wear resistance of copper bushings and the good impact resistance and load-bearing capacity of steel bushings.

[0003] At present, the steel-copper composite sleeve is to prevent solid lubricants such as graphite inside, so that the graphite contacts the shaft to achieve self-lubrication. However, the composite sleeve now generally has multiple blind holes inside, and graphite is placed in the blind holes. When the graphite in the blind holes is used up, it needs to be disassembled and reloaded with graphite, which has a short service life and requires frequent maintenance. Utility Model Content

[0004] In order to solve the defects of the above-mentioned prior art, the utility model provides a steel-copper self-lubricating composite sleeve. The utility model can store more graphite powder, has a long lubrication time, does not need to be frequently disassembled to load graphite powder, can replace traditional copper sleeves, save a lot of copper, reduce production costs, and has good lubrication effect.

[0005] To achieve the above technical objectives, the utility model adopts the following technical solutions: a steel-copper self-lubricating composite sleeve, comprising a steel sleeve located on the outside and a copper sleeve located on the inside of the steel sleeve; a cavity is opened inside the steel sleeve, a lubricating part is arranged in the cavity, a plurality of through holes are opened along the side wall of the copper sleeve, the through holes are connected with the cavity, and the lubricating part is arranged inside the through holes; a plurality of lubricating spiral grooves are opened on the inner wall of the copper sleeve, and the helix angles of the plurality of lubricating spiral grooves are different.

[0006] Furthermore, the cavity includes a storage spiral cavity and a plurality of transition cavities, the storage spiral cavity is opened inside the steel sleeve, one end of the transition cavity is connected to the storage spiral cavity, and the other end is connected to the through hole in a one-to-one correspondence.

[0007] Furthermore, the cross-sectional size of the storage spiral chamber is larger than that of the transition chamber.

[0008] Furthermore, the transition cavity is a cylindrical hole, and the transition cavity is arranged along the diameter direction.

[0009] Furthermore, the connection between the transition cavities is rounded.

[0010] Furthermore, each of the lubricating spiral grooves is communicated with at least one of the through holes.

[0011] In summary, the utility model has achieved the following technical effects:

[0012] The utility model is provided with a storage chamber capable of storing more graphite powder, and adopts different helical angles to have many specifications of graphite powder quantity. The transition chamber can transport the graphite powder to the through hole and can store a certain amount of graphite, so that the lubrication time of the composite sleeve is long, and it does not need to be frequently disassembled to load the graphite powder;

[0013] The composite sleeve of the utility model can replace the traditional copper sleeve, save a lot of copper, reduce production costs, and has good lubrication effect;

[0014] The utility model does not require lubrication and can achieve a self-lubricating effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic cross-sectional view of a steel-copper self-lubricating composite sleeve;

[0016] Figure 2 yes Figure 1 A partial enlarged schematic diagram. DETAILED DESCRIPTION

[0017] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0018] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0019] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0020] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0021] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0023] Example:

[0024] Figure 1 The invention is a schematic cross-sectional view of a steel-copper self-lubricating composite sleeve, comprising a steel sleeve 1 located on the outside and a copper sleeve 2 located on the inside of the steel sleeve 1, wherein the copper sleeve 2 is fused to the inner wall of the steel sleeve 1 so that the two become a whole; a cavity is provided inside the steel sleeve 1, and a lubricating part (not shown) is arranged inside the cavity; a plurality of through holes 201 are provided along the side wall of the copper sleeve 2, and the through holes 201 are connected to the cavity, and the lubricating part is arranged inside the through holes 201; a plurality of lubricating spiral grooves are provided on the inner wall of the copper sleeve 2, and the helix angles of the plurality of lubricating spiral grooves are different.

[0025] The lubricating part of the utility model adopts graphite powder added with lubricating oil to achieve the lubrication effect between the inner wall of the copper sleeve 2 and the shaft. The cavity can store graphite powder and continuously provide graphite to the through hole during operation, thereby achieving a self-lubricating effect. There is no need to inject lubricating liquid all the time, and self-lubrication can be achieved inside.

[0026] The cavity includes a storage spiral cavity 101 and a plurality of transition cavities 102 . The storage spiral cavity 101 is opened inside the steel sleeve 1 . One end of the transition cavity 102 is connected to the storage spiral cavity 101 , and the other end is connected to the through hole 201 in a one-to-one correspondence.

[0027] The storage spiral chamber 101 of the utility model is used to store graphite powder. The storage spiral chamber 101 is also provided with an entrance (not shown). The entrance is located on the outer wall of the steel sleeve 1 and is sealed with a plug to prevent leakage of graphite powder. The storage spiral chamber 101 can achieve different storage spaces by using different spiral angles. The spiral angle is rotated according to actual conditions to determine different amounts of graphite powder. The storage spiral chamber 101 is a spiral structure, which not only maintains the strength of the steel sleeve, but also can provide graphite powder in a circular manner from front to back, and the lubrication effect is better. The transition chamber 102 is a radial hole opened in the storage spiral chamber 101 and facing the through hole 201, which is used to transport the graphite powder in the storage spiral chamber 101 to the through hole 201, so as to keep the graphite powder uninterrupted and the lubrication uninterrupted during the working rotation process.

[0028] The cross-sectional size of the storage spiral chamber 101 is larger than that of the transition chamber 102 , and can store more graphite powder, thereby providing a more lasting lubrication effect.

[0029] The transition chamber 102 is a cylindrical hole, and the transition chamber 102 is arranged along the diameter direction. The cylindrical hole will not accumulate graphite powder, allowing the graphite powder to flow more smoothly to the through hole 201. Similarly, the through hole 201 is also a cylindrical hole.

[0030] Figure 2 yes Figure 1 In the partially enlarged schematic diagram, the connection between the transition cavity 102 and the transition cavity 102 is a rounded corner 103 to prevent the graphite powder from being blocked from flowing toward the transition hole 102 .

[0031] Each of the lubricating spiral grooves is connected to at least one of the through holes 201, so that graphite powder can reach the lubricating spiral groove to improve the lubrication effect. In this embodiment, the number of lubricating spiral grooves is 2, namely the first lubricating spiral groove 202 and the second lubricating spiral groove 203. The helical angle of the first lubricating spiral groove 202 is greater than the helical angle of the second lubricating spiral groove 203. The depth of the two spiral grooves is very small, about one tenth of the single-side wall thickness of the copper sleeve 2. The graphite powder can flow from the through hole 201 to the inside of the two spiral grooves, so that the lubrication effect between the copper sleeve 2 and the shaft is better.

[0032] The above description is only a preferred implementation mode of the present invention, and does not limit the present invention in any form. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A steel-copper self-lubricating composite sleeve, characterized in that: The invention comprises a steel sleeve (1) located on the outside and a copper sleeve (2) located on the inside of the steel sleeve (1); a cavity is provided inside the steel sleeve (1), a lubricating component is provided inside the cavity, a plurality of through holes (201) are provided along the side wall of the copper sleeve (2), the through holes (201) are connected to the cavity, and the lubricating component is provided inside the through holes (201); a plurality of lubricating spiral grooves are provided on the inner wall of the copper sleeve (2), and the helix angles of the plurality of lubricating spiral grooves are different.

2. A steel-copper self-lubricating composite sleeve according to claim 1, characterized in that: The cavity comprises a storage spiral cavity (101) and a plurality of transition cavities (102); the storage spiral cavity (101) is opened inside the steel sleeve (1); one end of the transition cavity (102) is connected to the storage spiral cavity (101), and the other end is connected to the through hole (201) in a one-to-one correspondence.

3. A steel-copper self-lubricating composite sleeve according to claim 2, characterized in that: The cross-sectional size of the storage spiral chamber (101) is larger than the size of the transition chamber (102).

4. The steel-copper self-lubricating composite sleeve according to claim 2, characterized in that: The transition cavity (102) is a cylindrical hole, and the transition cavity (102) is arranged along the diameter direction.

5. The steel-copper self-lubricating composite sleeve according to claim 2, characterized in that: The connection between the transition cavity (102) and the transition cavity (102) is a rounded corner (103).

6. The steel-copper self-lubricating composite sleeve according to claim 2, characterized in that: Each of the lubricating spiral grooves is in communication with at least one of the through holes (201).

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