Low noise copper sleeve

Abstract

This utility model discloses a low-noise copper bushing, aiming to solve the problem that existing copper bushings lack noise reduction structures, resulting in significant mechanical noise under heavy-load conditions. The key technical points are: a bushing body with mounting holes axially extending through it; multiple lubrication holes on the bushing body, one end of which is located on and connected to the outer wall of the bushing body, and the other end located on the inner wall of the bushing body and connected to the mounting holes; lubrication groove one and lubrication groove two on the bushing body, the first lubrication groove being distributed axially along the bushing body and passing through the lubrication holes, and the second lubrication groove being distributed radially along the bushing body and passing through the lubrication holes; the bushing body includes a base layer and a noise reduction layer, with the noise reduction layer disposed on the base layer and one side of the noise reduction layer adhering to the base layer. This utility model, by incorporating a noise reduction layer, effectively blocks or absorbs the vibration and noise generated during the operation of the copper bushing, reducing mechanical operating noise.

Description

Technical Field

[0001] This utility model relates to the field of copper bushings, and in particular to a low-noise copper bushing. Background Technology

[0002] Currently, copper bushings, also known as copper shaft sleeves, come in various types, including machine copper rollers and copper bearings. They are used in various light industrial, large, and heavy machinery and are important components of machinery.

[0003] In the prior art, patent application number CN202421652973.9 discloses an impact-resistant oil-free graphite copper sleeve. This impact-resistant oil-free graphite copper sleeve includes a lubrication component, which forms a graphite film to reduce friction when sliding. An outer protective component is slidably connected to one side of the lubrication component, and a force-relieving component is slidably connected inside the lubrication component. A positioning component is provided on one side of the force-relieving component to assist in its installation. A storage component is provided on one side of the lubrication component, which pulls the positioning component into the lubrication component. A shock-absorbing component is provided on one side of the lubrication component, and the shock-absorbing component can be disassembled.

[0004] Existing copper bushings lack noise reduction structures, resulting in significant mechanical noise under heavy loads. Therefore, it is necessary to improve the structure to overcome these shortcomings. Utility Model Content

[0005] The purpose of this invention is to provide a low-noise copper bushing to solve the problem that existing copper bushings lack noise reduction structures and generate huge mechanical noise under heavy load conditions.

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

[0007] A low-noise copper sleeve includes a sleeve body with a mounting hole axially extending through the sleeve body. The sleeve body has multiple lubrication holes, one end of which is located on the outer wall of the sleeve body and communicates with it, while the other end is located on the inner wall of the sleeve body and communicates with the mounting hole. The sleeve body has a lubrication groove 1 and a lubrication groove 2. Lubrication groove 1 is distributed along the axial direction of the sleeve body and passes through the lubrication hole, while lubrication groove 2 is distributed along the radial direction of the sleeve body and passes through the lubrication hole. The sleeve body includes a base layer and a noise reduction layer. The noise reduction layer is disposed on the base layer, with one side of the noise reduction layer adhering to the base layer. The noise reduction layer is used to reduce the amount of noise transmitted to the outside of the copper sleeve.

[0008] A further feature of this invention is that multiple lubrication holes are provided, which are distributed along the circumference of the sleeve, and the lubrication holes are circular holes.

[0009] A further feature of this invention is that chamfered surfaces are provided at both the upper and lower ends of the sleeve, with the chamfered surfaces located on the outer side of the sleeve.

[0010] A further feature of this invention is that the height of the first lubrication groove is the same as the height of the sleeve body, the first lubrication groove passes through the upper and lower ends of the sleeve body and communicates with the outside of the sleeve body, and the lubricating oil can flow into the sleeve body through the first lubrication groove to ensure that the lubricating oil is distributed along the axial direction of the sleeve body.

[0011] A further feature of this invention is that the first lubrication groove and the second lubrication groove are interconnected, and the lubricating oil in the first lubrication groove can flow into the second lubrication groove, distributing the axial oil flow to the radial friction contact surface of the sleeve.

[0012] A further feature of this invention is that a redundant groove is provided on the sleeve body, the redundant groove extends along the axial direction of the sleeve body and passes through both ends of the sleeve body, and the redundant groove is used to provide installation redundancy for the sleeve body.

[0013] A further feature of this invention is that the interface shape between lubrication groove one and lubrication groove two is semi-circular.

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

[0015] 1. By setting a noise reduction layer, the vibration and noise generated during the operation of the copper bushing are effectively blocked or absorbed, significantly reducing mechanical operating noise and improving the working environment.

[0016] 2. The lubrication holes are connected to lubrication groove one and lubrication groove two to form a three-dimensional lubrication network, ensuring that the lubricating oil is evenly distributed to the contact surface and reducing friction loss. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is the front view of this utility model.

[0019] Figure 3 This is a partial structural schematic diagram of the present invention.

[0020] Numerical labels: 1. Sleeve body, 2. Mounting hole, 3. Lubrication hole, 4. Lubrication groove one, 5. Lubrication groove two, 6. Base layer, 7. Noise reduction layer, 8. Chamfered surface, 9. Redundancy groove. Detailed Implementation

[0021] 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.

[0022] like Figures 1 to 3As shown, the present invention proposes a low-noise copper sleeve, comprising a sleeve body 1, a mounting hole 2 on the sleeve body 1, the mounting hole 2 being axially disposed through the sleeve body 1, allowing the sleeve body 1 to be mounted on an external transmission mechanism via the mounting hole 2, a plurality of lubrication holes 3 being provided on the sleeve body 1, one end of the lubrication hole 3 being located on the outer wall of the sleeve body 1 and communicating with the outer wall of the sleeve body 1, and the other end of the lubrication hole 3 being located on the inner wall of the sleeve body 1 and communicating with the mounting hole 2, a lubrication groove 4 and a lubrication groove 5 being provided on the sleeve body 1, the lubrication groove 4 being distributed along the axial direction of the sleeve body 1 and passing through the lubrication hole 3, the lubrication groove 5 being distributed along the radial direction of the sleeve body 1 and passing through the lubrication hole 3, the lubrication groove 4 and the lubrication groove 5 being interconnected, the sleeve body 1 including a base layer 6, the base layer 6 being used to ensure that the copper sleeve maintains shape stability under load, and a noise reduction layer 7 being disposed on the base layer 6, one side of the noise reduction layer 7 being attached to the base layer 6, the noise reduction layer 7 being used to reduce the amount of noise transmitted to the outside of the copper sleeve.

[0023] During use, lubricating oil is injected through the lubrication hole 3 on the outer wall, distributed along the length of the sleeve 1 via the axial lubrication groove 4, and then penetrates into the inner wall of the mounting hole 2 through the radial lubrication groove 5 to form a dynamic oil film. The cross-groove design ensures that the lubricating oil continuously covers the contact surface during rotation or reciprocating motion, reducing dry friction. The vibration energy transmitted by the base layer 6 is absorbed by the noise reduction layer 7, thereby weakening noise radiation.

[0024] Preferably, multiple lubrication holes 3 are provided, and the multiple lubrication holes 3 are distributed along the circumference of the sleeve 1. The lubrication holes 3 are circular holes, and solid lubricant (omitted in the figure) is provided in the lubrication holes 3. The multiple circumferentially distributed lubrication holes 3 can uniformly release solid lubricant, forming a lubricating film on the contact surface between the copper sleeve and the external transmission machinery, which significantly reduces friction, inhibits surface wear, and extends the service life of the component.

[0025] Preferably, the upper and lower ends of the sleeve 1 are provided with chamfered surfaces 8, which are located on the outside of the sleeve 1. The chamfered surfaces 8 are used to eliminate sharp edges, reduce the risk of operators being scratched, and prevent adjacent parts from being damaged by friction or collision.

[0026] Preferably, the base layer 6 is a component made of brass. Brass has high strength and hardness, and as the base layer 6, it provides rigid support, resists deformation, and ensures the stability of the overall structure of the sleeve 1.

[0027] Preferably, the noise reduction layer 7 is a component made of polytetrafluoroethylene (PTFE). The noise reduction layer 7 made of PTFE has a low coefficient of friction, which can reduce the frictional resistance between contact surfaces, suppress the transmission of mechanical vibration energy, and reduce frictional noise from the source.

[0028] Preferably, the height of the lubrication groove 4 is the same as the height of the sleeve 1. The lubrication groove 4 passes through the upper and lower ends of the sleeve 1 and is connected to the outside of the sleeve 1. Lubricating oil can flow into the sleeve 1 through the lubrication groove 4 to ensure that the lubricating oil is distributed along the axial direction of the sleeve 1. The lubrication groove 4 is connected to the lubrication groove 5. The interface shape of the lubrication groove 4 and the lubrication groove 5 is semi-circular. The lubricating oil in the lubrication groove 4 can flow into the lubrication groove 5 to distribute the axial oil flow to the radial friction contact surface of the sleeve 1.

[0029] Preferably, the sleeve 1 is provided with a redundant groove 9. The redundant groove 9 extends along the axial direction of the sleeve 1 and passes through both ends of the sleeve 1. The redundant groove 9 is used to provide installation redundancy for the sleeve 1. The redundant groove 9 allows the sleeve 1 to be finely adjusted in position along the axial direction during installation, to compensate for the manufacturing tolerance of the external transmission mechanism, and to avoid assembly failure caused by misalignment.

[0030] Example 1

[0031] This embodiment provides a low-noise copper sleeve. The sleeve body 1 has a double-layer composite structure, including a base layer 6 and a noise-reducing layer 7. The base layer 6 is made of H62 brass and has a thickness of 8-12mm. The base layer 6 provides rigid support and maintains the coaxiality accuracy of the shaft and hole. The noise-reducing layer 7 is made of polytetrafluoroethylene and has a thickness of 0.5mm. It is attached to the inner wall of the base layer 6 by electrostatic spraying and effectively blocks the transmission of vibration energy. Circular lubrication holes 3 with a diameter of 3mm are evenly distributed along the circumference of the sleeve body 1. The holes are filled with graphite solid lubricant to ensure that the lubricant evenly covers the contact surface.

[0032] In summary, this embodiment achieves a breakthrough in the comprehensive performance of low noise and long life of copper bushings, making it suitable for heavy-duty, low-speed transmission scenarios in engineering machinery.

[0033] 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.

[0034] 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.

[0035] 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 low-noise copper sleeve, comprising a sleeve body having a mounting hole axially extending through the sleeve body, characterized in that, The sleeve body has multiple lubrication holes. One end of each lubrication hole is located on the outer wall of the sleeve body and communicates with the outer wall. The other end of each lubrication hole is located on the inner wall of the sleeve body and communicates with the mounting hole. The sleeve body has a lubrication groove one and a lubrication groove two. The lubrication groove one is distributed along the axial direction of the sleeve body and passes through the lubrication hole. The lubrication groove two is distributed along the radial direction of the sleeve body and passes through the lubrication hole. The sleeve body includes a base layer and a noise reduction layer. The noise reduction layer is disposed on the base layer and one side of the noise reduction layer is attached to the base layer. The noise reduction layer is used to reduce the amount of noise transmitted to the outside of the copper sleeve.

2. The low-noise copper sleeve according to claim 1, characterized in that, The lubrication holes are provided in multiple ways, and are distributed along the circumference of the sleeve. The lubrication holes are circular holes.

3. The low-noise copper sleeve according to claim 1, characterized in that, The upper and lower ends of the sleeve are chamfered, and the chamfered surfaces are located on the outer side of the sleeve.

4. A low-noise copper sleeve according to claim 1, characterized in that, The height of the first lubrication groove is the same as the height of the sleeve. The first lubrication groove runs through the upper and lower ends of the sleeve and is connected to the outside of the sleeve. Lubricating oil can flow into the sleeve through the first lubrication groove.

5. A low-noise copper sleeve according to claim 1, characterized in that, The first lubrication groove and the second lubrication groove are interconnected, and the lubricating oil in the first lubrication groove can flow into the second lubrication groove, distributing the axial oil flow to the radial friction contact surface of the sleeve.

6. A low-noise copper sleeve according to claim 1, characterized in that, The sleeve body is provided with a redundant groove, which extends along the axial direction of the sleeve body and passes through both ends of the sleeve body. The redundant groove is used to provide installation redundancy for the sleeve body.

7. A low-noise copper sleeve according to claim 1, characterized in that, The interface between the first lubrication groove and the second lubrication groove is semi-circular.

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