High-hardness bushing

Abstract

This utility model discloses a high-hardness bushing, aiming to solve the problem of weak resistance to plastic deformation in existing bushings, which are prone to deformation under high loads. The key technical points are: it includes a bushing body with a shaft hole along its axial direction, penetrating both ends of the bushing; importantly, it features a reinforcing section on the outer wall of the bushing body, with one end connected to the body and the other end extending outwards; the bushing body includes a base layer providing support, and a reinforcing layer outside the base layer to improve the overall strength of the bushing. This utility model incorporates a reinforcing section integrally formed with the base layer, significantly enhancing the bushing's overall resistance to deformation and enabling it to maintain shape stability even under complex working conditions.

Description

Technical Field

[0001] This utility model relates to the field of bushing technology, and in particular to a high-hardness bushing. Background Technology

[0002] In the field of mechanical manufacturing, bushings are key components for connecting and supporting shafts, and their performance directly affects the stability and service life of mechanical equipment.

[0003] In the prior art, patent document CN222977247U discloses a deformation-resistant self-lubricating bushing structure, including a bushing sleeve. The outer surface of the bushing sleeve has multiple vertical reinforcing ribs. A protective sleeve is fitted on the outer side of the bushing sleeve. A buffer space is left between the protective sleeve and the outer surface of the bushing sleeve due to the support of the reinforcing ribs. A limit ring is detachably fixed at the lower end of the bushing sleeve, and the limit ring abuts against the lower port of the protective sleeve to form a limit. Multiple sliding grooves are formed on the inner side of the protective sleeve. The outer edges of the reinforcing ribs slide into the sliding grooves. The outer edge of the lower port of the bushing sleeve has an external thread, and the inner wall of the limit ring has an internal thread. The external thread and the internal thread are threaded together.

[0004] Existing bushings have weak resistance to plastic deformation, and under high loads, they are prone to deformation under pressure. Therefore, it is necessary to improve this structure to overcome the above-mentioned defects. Utility Model Content

[0005] The purpose of this invention is to provide a high-hardness bushing to solve the problem that existing bushings have weak resistance to plastic deformation and are prone to deformation under high loads.

[0006] The above-mentioned technical objective of this utility model is achieved by the following technical solution:

[0007] A high-hardness bushing includes a bushing body with a shaft hole along its axial direction, extending through both ends of the bushing. A reinforcing portion is provided on the outer wall of the bushing body, with one end connected to the bushing body and the other end extending outwards. The bushing body includes a base layer for providing support, and a reinforcing layer is provided outside the base layer to improve the overall strength of the bushing body.

[0008] The present invention is further configured such that: the reinforcing part is an annular boss structure, the reinforcing part and the sleeve are coaxially arranged, the inner side of the reinforcing part and the sleeve are integrally connected, and the reinforcing part is used to improve the load-bearing capacity of the sleeve.

[0009] A further feature of this invention is that the sleeve body is provided with a plurality of lubrication grooves, which are circular grooves distributed around the outer wall of the sleeve body. One end of the lubrication groove is located on the outer wall of the sleeve body and communicates with the outside, while the other end of the lubrication groove is located on the inner wall of the sleeve body and communicates with the shaft hole.

[0010] A further feature of this invention is that multiple lubricating oil channels are provided on the inner wall of the sleeve. The lubricating oil channels have a diamond-shaped structure, and the diamond-shaped oil channels form a multi-directional flow channel, so that the lubricating oil is evenly distributed on the inner wall of the sleeve. The lubrication grooves are connected through the lubricating oil channels.

[0011] A further feature of this invention is that an oil storage cavity is provided on the inner wall of the sleeve, and multiple oil storage cavities are provided. The oil storage cavities are located at the upper and lower ends of the inner wall of the sleeve, one end of the oil storage cavity is located on the inner wall of the sleeve and communicates with the shaft hole, and the other end of the oil storage cavity extends toward the end away from the shaft hole.

[0012] A further feature of this invention is that a buffer groove is provided on the sleeve body, the buffer groove extends along the axial direction of the sleeve body and passes through the upper and lower ends of the sleeve body.

[0013] A further feature of this invention is that a chamfered surface one is provided on the inner side of the sleeve, and a chamfered surface two is provided on the outer side of the sleeve.

[0014] In summary, this utility model has the following beneficial effects:

[0015] 1. It is equipped with a reinforcing part, which is integrally formed with the base layer, significantly improving the overall deformation resistance of the bushing and enabling the bushing to maintain shape stability under complex working conditions.

[0016] 2. The carbon steel base layer has excellent tensile strength and yield strength, which can effectively withstand axial load and bending stress, resist deformation under external impact or heavy load conditions, and ensure the stability of the bushing structure. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the present invention.

[0018] Figure 2 This is a schematic diagram of the structure of this utility model.

[0019] Numerical designations: 1. Sleeve body; 2. Shaft hole; 3. Reinforcing part; 4. Base layer; 5. Reinforcing layer; 6. Lubrication groove; 7. Lubrication oil passage; 8. Oil reservoir; 9. Buffer groove; 10. Chamfer surface one; 11. Chamfer surface two. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with the illustrations and specific embodiments.

[0021] like Figures 1 to 2 As shown, the present invention proposes a high-hardness bushing, including a bushing body 1, a shaft hole 2 on the bushing body 1, the shaft hole 2 being arranged along the axial direction of the bushing body 1 and passing through both ends of the bushing, a reinforcing part 3 being provided on the bushing body 1, the reinforcing part 3 being disposed on the outer wall of the bushing body 1, one end of the reinforcing part 3 being connected to the bushing body 1, and the other end of the reinforcing part 3 being extended toward the outside of the bushing body 1, the bushing body 1 including a base layer 4, the base layer 4 being used to provide support, and a reinforcing layer 5 being provided on the outside of the base layer 4, the reinforcing layer 5 being used to improve the overall strength of the bushing body 1.

[0022] Preferably, the base layer 4 is a component made of carbon steel. Carbon steel has excellent tensile strength and yield strength, and can effectively withstand static and dynamic loads to ensure structural stability.

[0023] Preferably, the reinforcing layer 5 is a component made of copper-tin alloy. Copper-tin alloy can significantly improve the surface hardness of the sleeve 1, and its wear resistance is better than that of the carbon steel base layer 4, which can extend the overall service life of the bushing.

[0024] Preferably, the reinforcing part 3 is an annular boss structure, the reinforcing part 3 and the sleeve 1 are coaxially arranged, the inner side of the reinforcing part 3 and the sleeve 1 are integrally connected, and the reinforcing part 3 is used to improve the load-bearing capacity of the sleeve 1 and extend its service life.

[0025] Preferably, the sleeve 1 is provided with a plurality of lubrication grooves 6, which are circular grooves. The lubrication grooves 6 are distributed around the outer wall of the sleeve 1. One end of the lubrication groove 6 is located on the outer wall of the sleeve 1 and communicates with the outside. The other end of the lubrication groove 6 is located on the inner wall of the sleeve 1 and communicates with the shaft hole 2. Lubricating oil can enter the sleeve 1 through the lubrication grooves 6.

[0026] Preferably, the sleeve 1 is provided with a buffer groove 9, which extends along the axial direction of the sleeve 1 and passes through the upper and lower ends of the sleeve 1. The sleeve 1 is used to provide buffer space when the bushing is installed, making it easier to assemble the bushing and the drive shaft (omitted in the figure).

[0027] Preferably, the inner wall of the sleeve 1 is provided with a plurality of lubricating oil channels 7. The lubricating oil channels 7 are in the shape of a rhombus. The rhombus structure oil channels form a multi-directional flow channel, so that the lubricating oil is evenly distributed on the inner wall of the sleeve 1. The lubricating grooves 6 are connected through the lubricating oil channels 7. The lubricating oil in each lubricating groove 6 can flow through the lubricating oil channels 7 and form a lubricating oil film in the shaft hole 2.

[0028] Preferably, an oil storage cavity 8 is provided on the inner wall of the sleeve 1. Multiple oil storage cavities 8 are provided and are located at the upper and lower ends of the inner wall of the sleeve 1. One end of the oil storage cavity 8 is located on the inner wall of the sleeve 1 and communicates with the shaft hole 2. The other end of the oil storage cavity 8 extends toward the end away from the shaft hole 2 and forms a receiving space. The lubricating oil on the inner wall of the shaft hole 2 can enter the oil storage cavity 8 and be stored. When the lubricating oil decreases, the lubricating oil in the oil storage cavity 8 flows outward to lubricate the inner wall of the shaft hole 2.

[0029] Preferably, the sleeve 1 has multiple chamfered surfaces. The inner side of the sleeve 1 has a chamfered surface 10, and the outer side of the sleeve 1 has a chamfered surface 11. The chamfered surface 10 is used to guide the drive shaft (omitted in the figure) into the shaft hole 2. Through the inclined structure of the chamfered surface 10, the slight deviation is automatically corrected when the drive shaft is inserted into the shaft hole 2, so as to achieve fast and accurate alignment of the shaft hole 2 and avoid jamming or hard contact caused by misalignment of the shaft and the hole. The chamfered surface 11 is used to reduce the sharpness of the sleeve and prevent the operator or external parts from being scratched when they come into contact with it.

[0030] Example 1

[0031] This embodiment provides a high-hardness bushing, including a bushing body 1. The bushing body 1 includes a base layer 4 and a reinforcing layer 5. The base layer 4 is formed by forging carbon steel and has a thickness of 8mm. It serves as the main support structure, providing axial compressive strength and bending stiffness. The reinforcing layer 5 is disposed on the outer surface of the base layer 4, has a thickness of 1.0mm, a surface hardness of HB160, and good wear resistance. A reinforcing part 3 is provided on the bushing body 1, and the reinforcing part 3 and the base layer 4 are integrally formed by forging.

[0032] The sleeve 1 is also provided with a lubrication groove 6, a lubrication oil channel 7 and an oil storage cavity 8. The lubrication oil channel 7 is inclined at a 45° angle and is connected to the lubrication groove 6 to form a multi-directional flow network, so that the lubricating oil is evenly distributed. An annular oil storage cavity 8 is provided at the upper and lower ends of the shaft hole 2 to realize dynamic replenishment of lubricating oil.

[0033] In summary, high-hardness bushings have the following advantages: the copper-tin alloy layer reduces surface wear, and the carbon steel base ensures structural stability; the annular reinforcement disperses stress, adapts to complex working conditions, and improves structural strength; and it achieves continuous oil film coverage, improving lubrication effect and lubrication time.

[0034] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, terms such as "set" and "connect" should be interpreted broadly. For example, "connection" 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 a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances. In this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0035] Any descriptions not covered in the above specific embodiments of this utility model belong to the well-known technology in the field, and can be implemented by referring to the well-known technology.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-hardness bushing, comprising a bushing body, wherein a shaft hole is formed on the bushing body, the shaft hole being arranged along the axial direction of the bushing body and penetrating both ends of the bushing, characterized in that, The sleeve body is provided with a reinforcing part, which is disposed on the outer wall of the sleeve body. One end of the reinforcing part is connected to the sleeve body, and the other end of the reinforcing part extends outward toward the sleeve body. The sleeve body includes a base layer for providing support, and a reinforcing layer is disposed outside the base layer for improving the overall strength of the sleeve body.

2. The high-hardness bushing according to claim 1, characterized in that, The reinforcing part is an annular boss structure. The reinforcing part and the sleeve are coaxially arranged. The inner side of the reinforcing part and the sleeve are integrally connected. The reinforcing part is used to improve the load-bearing capacity of the sleeve.

3. The high-hardness bushing according to claim 1, characterized in that, The sleeve has multiple lubrication grooves, which are circular grooves distributed around the outer wall of the sleeve. One end of the lubrication groove is located on the outer wall of the sleeve and communicates with the outside, while the other end of the lubrication groove is located on the inner wall of the sleeve and communicates with the shaft hole.

4. A high-hardness bushing according to claim 1, characterized in that, Multiple lubricating oil channels are provided on the inner wall of the sleeve. The lubricating oil channels have a diamond-shaped structure, which forms a multi-directional flow channel, so that the lubricating oil is evenly distributed on the inner wall of the sleeve. The lubrication grooves are connected by the lubricating oil channels.

5. A high-hardness bushing according to claim 1, characterized in that, The inner wall of the sleeve is provided with an oil storage cavity. There are multiple oil storage cavities. The oil storage cavities are located at the upper and lower ends of the inner wall of the sleeve. One end of the oil storage cavity is located on the inner wall of the sleeve and communicates with the shaft hole. The other end of the oil storage cavity extends toward the end away from the shaft hole.

6. A high-hardness bushing according to claim 1, characterized in that, The sleeve is provided with a buffer groove, which extends along the axial direction of the sleeve and passes through the upper and lower ends of the sleeve.

7. A high-hardness bushing according to claim 1, characterized in that, The inner side of the sleeve is provided with a chamfered surface one, and the outer side of the sleeve is provided with a chamfered surface two.

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