Self-lubricating shaft sleeve and loading machine movable arm applying self-lubricating shaft sleeve

Abstract

The utility model provides a self-lubricating shaft sleeve and a loader boom applying the self-lubricating shaft sleeve, and belongs to the technical field of loaders, the self-lubricating shaft sleeve comprises wall bodies, the wall bodies are connected end to end to form a circumferential closed structure, and the top and the bottom of the circumferential closed structure are open; a plurality of oil holes are formed in the inner wall of the circumferential closed structure; and the oil holes are filled with solid lubricating grease. According to the self-lubricating shaft sleeve, the oil hole structure is adopted, the strength of the self-lubricating shaft sleeve can be guaranteed, more solid lubricating grease can be fixed in the oil hole, the solid lubricating grease can be melted only when heat generated by friction between the shaft sleeve and a pin shaft reaches a certain temperature, waste of the lubricating grease caused by too fast melting is avoided, and the service life of the shaft sleeve is prolonged. And excessive abrasion of parts caused by lack of lubrication is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of loaders, and in particular relates to a self-lubricating shaft sleeve and a loader boom using the self-lubricating shaft sleeve. Background Art

[0002] At present, in order to solve the friction problem between the shaft sleeve and the pin, grease is usually added between the shaft sleeve and the pin to reduce friction. At present, the grease is mostly added manually, which wastes a lot of time. In addition, the amount of grease added is difficult to control. If the amount added is too small, dry friction between the shaft sleeve and the pin is likely to affect the normal use of the pin. If the amount added is too small, dry friction between the shaft sleeve and the pin is likely to occur, affecting the normal use of the pin. If the amount added is too large, grease is wasted.

[0003] Therefore, in order to solve the above problems, a self-lubricating sleeve and a loader boom using the self-lubricating sleeve are proposed to solve the above problems. Utility Model Content

[0004] In order to solve the above problems in the prior art, a self-lubricating sleeve and a loader boom using the self-lubricating sleeve are proposed.

[0005] The technical solution of the utility model to solve the technical problem is: on the one hand, a self-lubricating sleeve is proposed, including a wall body, the wall body is connected end to end to form a circumferential closed structure, the top and bottom of the circumferential closed structure are open; a plurality of oil holes are opened on the inner wall of the circumferential closed structure; and solid grease is filled in the oil holes.

[0006] Preferably, the oil holes are provided in several groups along the circumference of the wall, and adjacent oil holes are arranged at equal intervals. Each group of oil holes includes several oil storage holes arranged along the axial direction, and adjacent oil holes are staggered along the axial direction.

[0007] Preferably, an oil storage groove is provided in the middle of the wall along the circumference of the wall for storing the solid grease melted from the oil pocket.

[0008] Preferably, the oil pockets are symmetrically distributed on both sides of the oil storage tank, and each oil pocket includes three oil storage tanks.

[0009] Preferably, the oil storage hole is a cylindrical structure, and the depth of the oil storage hole is less than the thickness of the wall.

[0010] Preferably, the solid grease is in the form of cylindrical lubricating particles.

[0011] Preferably, the cylindrical lubricating particles are graphite, graphene or molybdenum disulfide particles.

[0012] On the other hand, a loader boom using the self-lubricating sleeve is proposed, comprising a boom, a mounting hole is provided at the end of the boom, a pin is inserted into the mounting hole, and a self-lubricating sleeve is sleeved between the boom and the pin.

[0013] Compared with the existing technology, the above technical solution has the following advantages or beneficial effects:

[0014] 1. The self-lubricating sleeve of this utility model adopts an oil pocket structure, which not only ensures the strength of the self-lubricating sleeve, but also fixes more solid grease in the oil pocket. The solid grease will not melt until the heat generated by the friction between the sleeve and the pin reaches a certain temperature. There is no waste of grease due to melting too quickly, and there is no excessive wear of parts due to lack of lubrication. This utility model has the technical advantages of environmental protection and high efficiency without changing the original matching and installation method.

[0015] 2. The staggered setting of the oil holes in the utility model not only ensures the rigidity of the shaft sleeve, but also provides sufficient lubrication between the shaft sleeve and the pin shaft, which is practical, new and strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0017] Figure 1 It is a schematic structural diagram of the utility model.

[0018] Figure 2 It is a cross-sectional view of the utility model.

[0019] Figure 3 This is the assembly drawing of the loader boom.

[0020] Figure 4 This is an exploded view of the loader boom.

[0021] Description of reference numerals:

[0022] 10. Wall; 11. Oil storage tank; 20. Oil hole; 21. Oil storage hole; 22. Solid grease; 30. Boom; 31. Mounting hole; 40. Pin. DETAILED DESCRIPTION

[0023] To clearly illustrate the technical features of this solution, the present invention is described in detail below using specific embodiments and accompanying drawings. The following disclosure provides numerous different embodiments or examples for implementing various configurations of the present invention. To simplify the disclosure of the present invention, the following descriptions focus on components and configurations of specific examples. Furthermore, the present invention may repeat reference numerals and / or letters across different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate a relationship between the various embodiments and / or configurations discussed. It should be noted that the components illustrated in the accompanying drawings are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted to avoid unnecessarily limiting the present invention. Terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or elements referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In the description of this utility model, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "connected," and "connected" 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, an indirect connection through an intermediate medium, or it can be internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0024] Example 1:

[0025] See also Figure 1-Figure 2 This embodiment provides a self-lubricating bushing comprising a wall body 10 connected end to end to form a circumferentially closed structure with openings at the top and bottom. A plurality of oil pockets 20 are defined on the inner wall of the circumferentially closed structure. The oil pockets 20 are filled with solid grease 22. The oil pockets 20 are arranged in a plurality of groups along the circumference of the wall body 10, with adjacent oil pockets 20 spaced evenly apart. Each group of oil pockets 20 includes a plurality of oil reservoir holes 21 arranged axially, with adjacent oil pockets 20 being staggered along the axial direction.

[0026] In this embodiment, oil reservoirs 11 are defined along the circumference of the central portion of the wall 10 to store solid grease 22 melted from the oil pockets 20. The oil pockets 20 are symmetrically located on either side of the reservoir 11, with each oil pocket 20 comprising three reservoirs 11. The oil reservoirs 21 are cylindrical, with a depth less than the thickness of the wall 10; the bottoms of the reservoirs 21 taper inward.

[0027] The solid grease 22 is cylindrical lubricating particles, which can be made of graphite, graphene or molybdenum disulfide particles.

[0028] Example 2:

[0029] Please refer to 3- Figure 4 This embodiment proposes a loader boom 30 using the self-lubricating sleeve described in Example 1, including a boom 30, a mounting hole 31 is opened at the end of the boom 30, a pin 40 is inserted into the mounting hole 31, and a self-lubricating sleeve is sleeved between the boom 30 and the pin 40.

[0030] After installing the solid grease 22 into the oil storage hole 21, the self-lubricating sleeve is put on the pin 40, and then inserted into the mounting hole 31 to complete the assembly; a small amount of lubricating oil can be placed in the oil storage tank 11 first, and lubrication can be provided when the boom 30 and the pin 40 are started at a low speed. When the speed increases, the solid grease 22 is melted by friction, and the higher the speed, the higher the heat generated by friction, and the faster the melting rate of the solid grease 22. There will be no waste of the solid grease 22 due to too fast melting, and no excessive wear of parts due to lack of lubrication.

[0031] Although the above describes the specific implementation methods of the utility model in conjunction with the accompanying drawings, it does not limit the scope of protection of the utility model. On the basis of the technical solution of the utility model, various modifications or variations that can be made by those skilled in the art without creative work are still within the scope of protection of the utility model.

Claims

1. A self-lubricating sleeve, characterized in that: The invention comprises a wall body (10), wherein the wall body (10) is connected end to end to form a circumferential closed structure, wherein the top and bottom of the circumferential closed structure are open; a plurality of oil holes (20) are provided on the inner wall of the circumferential closed structure; and solid grease (22) is filled in the oil holes (20).

2. The self-lubricating sleeve according to claim 1, characterized in that: Several groups of oil holes (20) are arranged along the circumference of the wall (10), and adjacent oil holes (20) are arranged at equal intervals. Each group of oil holes (20) includes several oil storage holes (21) arranged along the axial direction, and adjacent oil holes (20) are staggered along the axial direction.

3. The self-lubricating sleeve according to claim 2, characterized in that: An oil storage tank (11) for storing solid grease (22) melted from the oil pocket (20) is provided in the middle of the wall (10) along the circumference of the wall (10).

4. The self-lubricating sleeve according to claim 3, characterized in that: The oil pockets (20) are symmetrically distributed on both sides of the oil storage tank (11), and each oil pocket (20) includes three oil storage tanks (11).

5. The self-lubricating sleeve according to claim 1, characterized in that: The oil storage hole (21) is a cylindrical structure, and the depth of the oil storage hole (21) is less than the thickness of the wall (10); the bottom of the oil storage hole (21) contracts inward to form a tapered structure.

6. The self-lubricating sleeve according to claim 1, characterized in that: The solid grease (22) is in the form of cylindrical lubricating particles.

7. The self-lubricating sleeve according to claim 6, characterized in that: The cylindrical lubricating particles are graphite, graphene or molybdenum disulfide particles.

8. A loader boom (30) using the self-lubricating bushing according to any one of claims 1 to 7, characterized in that: The movable arm (30) comprises a mounting hole (31) at the end of the movable arm (30), a pin shaft (40) is inserted into the mounting hole (31), and a self-lubricating sleeve is sleeved between the movable arm (30) and the pin shaft (40).

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