A bimetallic rolled bushing

Abstract

This invention provides a bimetallic rolled bushing, comprising a bushing body. Multiple circular blind holes are evenly distributed on the inner wall of the bushing body, and a through-hole is correspondingly formed at the bottom of each blind hole. Multiple first spiral grooves are also evenly distributed along the circumference on the inner wall of the bushing body. These first spiral grooves sequentially pass through the multiple circular blind holes, and their ends are connected to the two end faces of the bushing body. Each circular blind hole can connect to the two end faces of the bushing body through its corresponding first spiral groove. This invention effectively improves problems such as uneven lubricant distribution and low heat dissipation efficiency, significantly reduces the continuous operating temperature of the bushing, extends its service life, and reduces lubricant consumption. It is well-suited for heavy-duty transmission scenarios requiring high reliability, such as engineering machinery and marine propulsion systems, and is therefore more practical.

Description

Technical Field

[0001] This utility model belongs to the field of bushing technology, specifically relating to a bimetallic rolled bushing. Background Technology

[0002] Bimetallic rolled bushings are sliding bearing components made of two different metal materials through a rolling process. They typically use a wear-resistant copper alloy as the inner layer (working layer) and high-strength steel as the outer layer (support layer).

[0003] Traditional bimetallic rolled bushings typically employ a simple cylindrical structure that is directly fitted onto the shaft. However, under high-speed, heavy-load conditions, they suffer from uneven lubricant distribution and low heat dissipation efficiency, leading to severe bushing wear. Therefore, it is necessary to propose an improvement measure to solve these technical problems.

[0004] It should be noted that the above content falls within the scope of the inventor's technical knowledge. Due to the vast and complex nature of the technical content in this field, the above content of this application does not necessarily constitute prior art. Utility Model Content

[0005] 1. Purpose of the utility model:

[0006] To address the aforementioned technical problems, this utility model provides a bimetallic rolled bushing to solve the technical problems existing in the background art.

[0007] 2. Technical Solution:

[0008] To achieve the above objectives, the technical solution provided by this utility model is as follows: a bimetallic rolled bushing, comprising a bushing body, wherein a plurality of circular blind holes are uniformly formed on the inner wall of the bushing body, and a through-hole is correspondingly formed at the bottom of the circular blind hole groove; a plurality of first spiral grooves are also uniformly distributed along the circumferential direction on the inner wall of the bushing body, the first spiral grooves sequentially pass through the plurality of circular blind holes, and the two ends of the first spiral grooves are correspondingly connected to the two end faces of the bushing body, and each circular blind hole can be connected to the two end faces of the bushing body through the corresponding first spiral groove.

[0009] Furthermore, the inner wall of the sleeve body is provided with a plurality of second spiral grooves evenly distributed along the circumferential direction. The second spiral grooves also pass through a plurality of circular blind holes in sequence. The two ends of the second spiral grooves are connected to the two end faces of the sleeve body respectively. Each circular blind hole can be connected to the two end faces of the sleeve body through the corresponding second spiral groove.

[0010] Furthermore, the first and second spiral grooves rotate in opposite directions, and each circular blind hole is connected to the corresponding first and second spiral grooves.

[0011] Furthermore, the outer wall of the sleeve body is provided with a plurality of straight grooves evenly distributed along the circumferential direction. The straight grooves are connected to the fine holes in the same axial direction. One end of the straight groove is connected to one end face of the sleeve body.

[0012] Furthermore, the sleeve body's wall is composed of a first wear-resistant layer, a metal layer, and a second wear-resistant layer pressed together from the outside to the inside, and the sleeve body has corresponding openings on its side.

[0013] Furthermore, the metal layer of the sleeve body is made of steel, and both the first and second wear-resistant layers of the sleeve body are copper alloy layers.

[0014] 3. Beneficial effects:

[0015] The technical solution provided by this utility model has the following advantages compared with the prior art:

[0016] This invention utilizes multiple circular blind holes on the inner wall of the bushing as oil storage units, combined with through-holes to achieve capillary oil seepage. Two sets of oppositely rotating spiral grooves form a cross-flow oil network, forcing bidirectional lubricant flow. Since each blind hole is connected to both ends via a spiral groove, a three-dimensional circulating lubrication channel is constructed. The oppositely rotating spiral grooves generate a pumping effect when the shaft rotates, improving lubricant replenishment efficiency. The combination of the micro-holes and spiral grooves controls the oil film thickness, preventing excessive lubricant loss. The annular distribution of blind holes and the spiral structure ensures uniform load distribution, reducing the risk of localized overheating. Heat can be dissipated through the spiral grooves or the straight grooves on the outside of the micro-holes, effectively improving problems such as uneven lubricant distribution and low heat dissipation efficiency. This significantly reduces the continuous operating temperature of the bushing, extends its service life, and reduces lubricant consumption. It is well-suited for heavy-duty transmission scenarios requiring high reliability, such as engineering machinery and ship propulsion systems, making it more practical. Attached Figure Description

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

[0018] Figure 2 This is an enlarged structural diagram of the inner wall of the bushing of this utility model;

[0019] Figure 3 This is an enlarged structural diagram of the baffle of this utility model.

[0020] Figure label:

[0021] 1. Sleeve body; 2. Circular blind hole; 3. First spiral groove; 4. Second spiral groove; 5. Fine hole; 6. Straight groove. Detailed Implementation

[0022] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element; the terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. Example

[0025] Reference Figure 1-3 This embodiment of a bimetallic rolled bushing includes a sleeve body 1. The inner wall of the sleeve body 1 is uniformly provided with a plurality of circular blind holes 2. The bottom of the circular blind holes 2 is provided with a through-hole 5. The inner wall of the sleeve body 1 is also provided with a plurality of first spiral grooves 3 uniformly distributed along the circumferential direction. The first spiral grooves 3 pass through the plurality of circular blind holes 2 in sequence. The two ends of the first spiral grooves 3 are connected to the two end faces of the sleeve body 1 respectively. Each circular blind hole 2 can be connected to the two end faces of the sleeve body 1 through the corresponding first spiral groove 3.

[0026] Specifically, the inner wall of the sleeve body 1 is provided with a plurality of second spiral grooves 4 evenly distributed along the circumferential direction. The second spiral grooves 4 also pass through a plurality of circular blind holes 2 in sequence. The two ends of the second spiral grooves 4 are connected to the two end faces of the sleeve body 1 respectively. Each circular blind hole 2 can be connected to the two end faces of the sleeve body 1 through the corresponding second spiral groove 4. The first spiral groove 3 and the second spiral groove 4 have opposite directions of rotation. Each circular blind hole 2 is connected to the corresponding first spiral groove 3 and second spiral groove 4.

[0027] In this embodiment, multiple circular blind holes 2 are set on the inner wall of the bushing as oil storage units, which, together with the through fine holes 5, achieve capillary oil seepage. The two sets of spiral grooves with opposite directions form a cross-oil circuit network, which forces the lubricant to flow in both directions. Since each blind hole is connected to both ends through the spiral groove, a three-dimensional circulating lubrication channel is constructed. The spiral grooves with opposite directions generate a pumping effect when the shaft rotates, which improves the lubricant replenishment efficiency. The combination of fine holes 5 and spiral grooves controls the oil film thickness and avoids excessive loss of lubricant. The annular distribution of blind holes and spiral structure ensures uniform load distribution and reduces the risk of local overheating. Heat can be dissipated through the spiral grooves, thereby effectively improving the problems of uneven lubricant distribution and low heat dissipation efficiency.

[0028] The outer wall of the sleeve body 1 is provided with a plurality of straight grooves 6 evenly distributed along the circumferential direction. The straight grooves 6 are connected to the fine holes 5 in the same axial direction. One end of the straight groove 6 is connected to one end face of the sleeve body 1. By setting the straight grooves 6, the heat dissipation path is increased and the heat dissipation effect is further improved.

[0029] It is worth noting that the sleeve body 1 is composed of a first wear-resistant layer, a metal layer, and a second wear-resistant layer pressed together from the outside to the inside, and the side of the sleeve body 1 has corresponding openings. The metal layer of the sleeve body 1 is made of steel, and both the first and second wear-resistant layers of the sleeve body 1 are copper alloy layers.

[0030] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A bimetallic coiled bushing characterized by: The sleeve body (1) includes a plurality of circular blind holes (2) evenly distributed on the inner wall of the sleeve body (1), and a through hole (5) is correspondingly opened at the bottom of the groove of the circular blind hole (2); a plurality of first spiral grooves (3) evenly distributed along the circumferential direction are also correspondingly opened on the inner wall of the sleeve body (1), and the first spiral grooves (3) sequentially pass through the plurality of circular blind holes (2), and the two ends of the first spiral grooves (3) are correspondingly connected to the two end faces of the sleeve body (1), and each circular blind hole (2) can be connected to the two end faces of the sleeve body (1) through the corresponding first spiral groove (3).

2. The bimetallic rolled bushing according to claim 1, characterized in that: The inner wall of the sleeve body (1) is also provided with a number of second spiral grooves (4) evenly distributed along the circumferential direction. The second spiral grooves (4) also pass through a number of circular blind holes (2) in sequence. The two ends of the second spiral grooves (4) are connected to the two end faces of the sleeve body (1) respectively. Each circular blind hole (2) can be connected to the two end faces of the sleeve body (1) through the corresponding second spiral groove (4).

3. A bimetallic coiled bushing according to claim 2, wherein: The first spiral groove (3) and the second spiral groove (4) have opposite directions of rotation, and each circular blind hole (2) is connected to the corresponding first spiral groove (3) and second spiral groove (4).

4. A bimetallic coiled bushing according to claim 3, wherein: The outer wall of the sleeve body (1) is provided with a plurality of straight grooves (6) evenly distributed along the circumferential direction. The straight grooves (6) are connected to the fine holes (5) in the same axial direction. One end of the straight groove (6) is connected to one end face of the sleeve body (1).

5. A bimetallic coiled bushing according to claim 4, wherein: The sleeve body (1) is composed of a first wear-resistant layer, a metal layer and a second wear-resistant layer pressed together from the outside to the inside. The sleeve body (1) has an opening slit on its side.

6. A bimetallic coiled bushing according to claim 5 wherein: The metal layer of the sleeve body (1) is made of steel, and the first and second wear-resistant layers of the sleeve body (1) are both copper alloy layers.

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