Wear-resistant composite coating and reinforcing rib combined mandrel bushing

Abstract

This utility model relates to the field of mandrel and bushing technology, and discloses a mandrel and bushing with a combination of wear-resistant composite coating and reinforcing ribs. It includes a base plate, an inner bushing fixedly disposed on one side of the base plate, and a positioning groove formed on the outer surface of one end of the inner bushing. A limiting groove is formed on the outer surface of the base plate. A reinforcing rib frame is fixedly disposed on the outer surface of the inner bushing, and a snap-fit ​​frame is fitted onto the inner surface of the reinforcing rib frame. Heat dissipation fins are fixedly disposed on the side surface of the snap-fit ​​frame. The surface of the inner bushing is coated with a wear-resistant composite coating. This wear-resistant composite coating and reinforcing rib combination mandrel and bushing effectively enhances the anti-friction capability of the contact area between the inner bushing and the rotating shaft, reduces surface wear during long-term operation, avoids increased clearance due to decreased dimensional accuracy, thereby reducing the risk of vibration, noise, and transmission failure, and reducing the frequency of bushing replacement.

Description

Technical Field

[0001] This utility model relates to the field of mandrel and bushing technology, specifically a mandrel and bushing with a combination of wear-resistant composite coating and reinforcing ribs. Background Technology

[0002] In mechanical transmission systems, the mandrel and bushing are key components connecting the rotating shaft and the equipment base. Their performance directly affects the stability, reliability and service life of the entire transmission system. The mandrel and bushing must simultaneously meet multiple technical requirements such as wear resistance, structural strength and heat dissipation performance in order to adapt to high-speed and high-load working environments.

[0003] However, existing mandrel bushings have many limitations in practical applications: First, insufficient wear resistance is a common problem. Traditional bushings are mostly made of a single metal material or have a simple plating treatment. During long-term friction, surface wear and dimensional accuracy are prone to occur, which leads to an increase in the fit clearance between the bushing and the rotating shaft, causing vibration, noise, or even transmission failure. Frequent replacement is required to maintain equipment operation, which significantly increases maintenance costs and downtime.

[0004] Secondly, structural strength is difficult to balance with the requirements of lightweight design. In order to improve load-bearing capacity, some bushings adopt a heavy integral structure, which can enhance strength but increases the load on the equipment and is not conducive to improving transmission efficiency. On the other hand, lightweight bushings often have insufficient structural rigidity and are prone to deformation when subjected to radial loads, affecting transmission accuracy. This defect is more prominent, especially in heavy machinery or high-frequency vibration scenarios.

[0005] Third, poor heat dissipation performance restricts the working stability of the bushing. When the bushing is running at high speed, the friction with the shaft will generate a lot of heat. If heat dissipation is not timely, the heat accumulation will cause the temperature of the bushing and surrounding parts to rise. This will not only accelerate the aging and failure of the lubricating oil, but also cause the material properties to degrade, reduce the wear resistance and strength of the bushing, and form a vicious cycle of "intensified wear - increased heat - deterioration of performance". In severe cases, it may cause sudden equipment failure.

[0006] Therefore, in order to address the shortcomings of existing mandrel bushings in terms of wear resistance, structural strength and heat dissipation performance, it is of great significance to develop a new type of mandrel bushing that integrates high wear resistance, reinforced structural support and efficient heat dissipation. Utility Model Content

[0007] The purpose of this invention is to provide a wear-resistant composite coating and reinforcing rib combined mandrel bushing to solve the problems mentioned in the background art, such as insufficient wear resistance, difficulty in balancing structural strength and lightweight, and poor heat dissipation performance of existing mandrel bushings.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a wear-resistant composite coating and reinforcing rib combined mandrel bushing, comprising a base plate, an inner bushing fixedly disposed on one side of the base plate, and a positioning groove formed on the outer surface of one end of the inner bushing, a limiting groove formed on the outer surface of the base plate, a reinforcing rib frame fixedly disposed on the outer surface of the inner bushing, and a snap-fit ​​frame engaged on the inner surface of the reinforcing rib frame, and heat dissipation fins fixedly disposed on the side surface of the snap-fit ​​frame, and the surface of the inner bushing is coated with a wear-resistant composite coating;

[0009] An outer sleeve is provided on the outer side of the inner bushing, and a connecting plate is fixedly provided on the outer surface of the outer sleeve. A screw hole is opened on the outer surface of the base plate, and a bolt is installed on the base plate through the screw hole, and a nut is connected to one end of the bolt.

[0010] Preferably, the reinforcing ribs are distributed at equal angles on the outer surface of the inner bushing, and the reinforcing ribs have a continuous square-shaped hollow design.

[0011] By adopting the above technical solution, the supporting force of the reinforcing rib frame on the inner bushing can be more evenly distributed. While enhancing the structural strength of the inner bushing, the hollow design reduces the overall weight, achieving a balance between structural strength and lightweight, and better coping with radial loads.

[0012] Preferably, the snap-fit ​​frame is designed in the shape of a square, and the outer surface of the snap-fit ​​frame is in contact with the inner surface of the square-shaped cutout of the reinforcing rib frame, and the snap-fit ​​frame and the reinforcing rib frame are connected by a tight snap-fit ​​connection.

[0013] Using the above technical solution, the U-shaped snap-fit ​​frame can perfectly fit the U-shaped cutout of the reinforcing rib frame. The tight snap-fit ​​connection method ensures the stability of the snap-fit ​​frame installation, while facilitating the transfer of heat from the reinforcing rib frame to the snap-fit ​​frame, thus ensuring efficient heat dissipation of the heat sink fins.

[0014] Preferably, the heat dissipation fins are arc-shaped, and both ends of the heat dissipation fins are fixedly connected to the outer surfaces of the two side snap-fit ​​frames.

[0015] By adopting the above technical solution, the arc-shaped heat dissipation fins increase the contact area with the air, which is conducive to the rapid dissipation of heat. The fixed connection between the fins and the two side mounting frames ensures that heat is smoothly transferred from the mounting frames to the heat dissipation fins, thereby improving the overall heat dissipation efficiency.

[0016] Preferably, one end of the outer sleeve is in contact with the outer surface of the substrate, and the inner surface of the outer sleeve is in contact with the outer surface of the reinforcing rib, and the outer sleeve and the inner bushing are concentrically arranged.

[0017] By adopting the above technical solution, the outer sleeve can fit tightly with the base plate and the reinforcing rib frame. On the one hand, it provides external support for the entire structure and enhances the overall stability. On the other hand, the concentric setting ensures the balance of the bushing during operation, avoids additional vibration and wear caused by eccentricity, and facilitates heat dissipation by the outer sleeve assisting the reinforcing rib frame.

[0018] Preferably, one end of the bolt penetrates the connecting plate, and the end of the bolt penetrating the connecting plate is threadedly connected to the nut.

[0019] By adopting the above technical solution, the outer sleeve can be firmly fixed to the base plate through the cooperation of bolts and nuts, ensuring the stability of the outer sleeve installation. At the same time, this detachable connection method facilitates the installation, disassembly and maintenance of the outer sleeve.

[0020] Compared with the prior art, the beneficial effects of this utility model are: the wear-resistant composite coating combined with the reinforcing rib mandrel bushing:

[0021] 1. The wear-resistant composite coating applied to the surface of the inner bushing can effectively enhance the anti-friction ability of the contact area between the inner bushing and the rotating shaft, reduce surface wear during long-term operation, avoid the problem of increased fit clearance due to decreased dimensional accuracy, thereby reducing the risk of vibration, noise and transmission failure, reducing the frequency of bushing replacement, and reducing maintenance costs and downtime.

[0022] 2. The reinforcing ribs distributed at equal angles on the outer surface of the inner bushing adopt a continuous U-shaped hollow design. While ensuring the support strength of the inner bushing, the weight of the overall structure is reduced. This design avoids the disadvantages of traditional heavy integral structures that increase the load on the equipment and are not conducive to improving transmission efficiency. It also solves the problem that lightweight bushings are prone to deformation when subjected to radial loads due to insufficient structural rigidity, which affects the transmission accuracy. It is especially suitable for heavy machinery or high-frequency vibration scenarios.

[0023] 3. The arc-shaped heat dissipation fins fixedly connected to the outer surface of the snap-fit ​​frame increase the heat dissipation area. Since the snap-fit ​​frame and the reinforcing rib are tightly fitted, the heat on the inner bushing and the reinforcing rib can be efficiently conducted to the heat dissipation fins, accelerating heat dissipation. This effectively avoids problems such as increased temperature of the bushing and surrounding components, aging and failure of lubricating oil, and degradation of material properties caused by heat accumulation when the bushing is running at high speed. It breaks the vicious cycle of "increased wear - increased heat - performance deterioration" and ensures the working stability of the bushing.

[0024] 4. The outer sleeve is fixedly connected to the base plate by connecting plates, bolts and nuts. This connection method makes the assembly and disassembly of the outer sleeve and the inner bushing simple and convenient. At the same time, the snap-fit ​​connection between the snap-fit ​​frame and the reinforcing rib frame also facilitates the installation and replacement of the heat dissipation fins, improving the installation and maintenance efficiency of the mandrel bushing in actual use and enhancing its overall practicality. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0026] Figure 2 This is a three-dimensional structural diagram of the present invention in its overall disassembled state;

[0027] Figure 3 This is a three-dimensional structural diagram of the connection between the substrate, inner bushing, and positioning groove of this utility model;

[0028] Figure 4 This is a three-dimensional structural diagram of the substrate, limiting groove, and screw hole connection of this utility model;

[0029] Figure 5 This is a schematic diagram of the overall cross-sectional three-dimensional structure of this utility model;

[0030] Figure 6 This is a three-dimensional structural diagram of the cross-sectional view of the connection between the snap-fit ​​frame and the heat dissipation fins of this utility model.

[0031] In the diagram: 1. Base plate; 2. Inner bushing; 3. Positioning groove; 4. Limiting groove; 5. Reinforcing rib frame; 6. Snap-fit ​​frame; 7. Heat dissipation fins; 8. Outer sleeve; 9. Connecting plate; 10. Screw hole; 11. Bolt; 12. Nut. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Please see Figures 1-6 This utility model provides a technical solution: a wear-resistant composite coating and reinforcing rib combined mandrel bushing.

[0034] Example 1: This example discloses: a substrate 1, an inner bushing 2 fixedly disposed on one side of the substrate 1, and a positioning groove 3 opened on the outer surface of one end of the inner bushing 2, a limiting groove 4 opened on the outer surface of the substrate 1, a reinforcing rib 5 fixedly disposed on the outer surface of the inner bushing 2, and a snap-fit ​​frame 6 snap-fitted onto the inner surface of the reinforcing rib 5, and a heat dissipation fin 7 fixedly disposed on the side surface of the snap-fit ​​frame 6, and a wear-resistant composite coating on the surface of the inner bushing 2.

[0035] The reinforcing ribs 5 are distributed at equal angles on the outer surface of the inner bushing 2, and the reinforcing ribs 5 have a continuous square-shaped hollow design.

[0036] The snap-fit ​​frame 6 is designed in the shape of a square, and the outer surface of the snap-fit ​​frame 6 fits against the inner surface of the square-shaped cutout of the reinforcing rib frame 5. The snap-fit ​​frame 6 and the reinforcing rib frame 5 are connected by a tight snap-fit ​​connection.

[0037] The heat dissipation fins 7 are arc-shaped, and both ends of the heat dissipation fins 7 are fixedly connected to the outer surfaces of the two side snap-fit ​​frames 6 respectively.

[0038] The base plate 1 provides basic mounting support for the entire mandrel bushing. The inner bushing 2 fixed on one side is used to connect with the rotating shaft. The positioning groove 3 on the outer surface of one end of the inner bushing 2 can assist the inner bushing 2 and the rotating shaft in precise positioning and installation, ensuring the accuracy of the initial mating position of the two. The limiting groove 4 on the outer surface of the base plate 1 can play a limiting role when the bushing is installed on the equipment as a whole, ensuring the stability of the installation position.

[0039] The reinforcing ribs 5, evenly distributed on the outer surface of the inner bushing 2, provide effective structural support for the inner bushing 2 without adding excessive weight, thanks to their continuous U-shaped hollow design. This enhances the inner bushing 2's resistance to deformation under radial loads. The U-shaped snap-fit ​​frame 6, which is installed on the inner surface of the reinforcing rib 5, fits snugly against the inner surface of the U-shaped hollow of the reinforcing rib 5, ensuring stable installation and securely connecting the heat dissipation fins 7 on both sides. The arc-shaped design... The heat dissipation fins 7 can fully contact the air. When the inner bushing 2 generates heat due to friction during operation, the heat can be transferred through the inner bushing 2 to the reinforcing rib 5, and then conducted to the heat dissipation fins 7 through the snap-fit ​​frame 6. The heat dissipation fins 7 quickly dissipate heat to the surrounding environment by increasing the contact area with the air, thus playing a good heat dissipation role. At the same time, the wear-resistant composite coating on the surface of the inner bushing 2 directly improves the wear resistance of the contact part between the inner bushing 2 and the shaft, reduces the friction loss between the two, and extends the service life of the inner bushing 2.

[0040] Example 2: This example discloses the following based on Example 1: An outer sleeve 8 is provided on the outer side of the inner sleeve 2, and a connecting plate 9 is fixedly provided on the outer surface of the outer sleeve 8. A screw hole 10 is opened on the outer surface of the base plate 1, and a bolt 11 is engaged and installed on the base plate 1 through the screw hole 10, and a nut 12 is connected to one end of the bolt 11.

[0041] One end of the outer sleeve 8 is in contact with the outer surface of the substrate 1, and the inner surface of the outer sleeve 8 is in contact with the outer surface of the reinforcing rib 5. The outer sleeve 8 and the inner bushing 2 are concentrically arranged.

[0042] One end of bolt 11 passes through connecting plate 9, and the end of bolt 11 that passes through connecting plate 9 is threadedly connected to nut 12;

[0043] The outer sleeve 8 is provided on the outside of the inner bushing 2. One end of the outer sleeve is in contact with the outer surface of the base plate 1, and the inner surface is in contact with the outer surface of the reinforcing rib 5. It is also concentrically arranged with the inner bushing 2. The outer sleeve 8 provides external protection and auxiliary support for the reinforcing rib 5 and the inner bushing 2, thereby enhancing the integrity and stability of the entire bushing structure.

[0044] The connecting plate 9 fixed to the outer surface of the outer sleeve 8 is fixed by bolts 11 that engage with the screw holes 10 on the outer surface of the base plate 1. One end of the bolt 11 passes through the connecting plate 9 and is threaded into the nut 12. This connection method allows the outer sleeve 8 to be stably installed on the base plate 1, while also facilitating the disassembly and maintenance of the outer sleeve 8. When the bushing is in operation, the outer sleeve 8 can not only prevent external dust and impurities from entering the inner bushing 2 and the internal structure such as the reinforcing rib 5, reducing contamination and wear on internal components, but also cooperate with the reinforcing rib 5 and other components to further optimize the stress distribution of the entire bushing and improve the working stability of the bushing under high speed and high load conditions. In addition, the outer sleeve 8 can also assist in heat dissipation to a certain extent, conducting some heat from the reinforcing rib 5 to itself and dissipating it, forming a heat dissipation system together with the heat dissipation fins 7, thereby improving the heat dissipation efficiency of the bushing.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wear-resistant composite coating and reinforcing rib combined mandrel bushing, comprising a base plate (1), wherein an inner bushing (2) is fixedly disposed on one side of the base plate (1), and a positioning groove (3) is formed on the outer surface of one end of the inner bushing (2), and a limiting groove (4) is formed on the outer surface of the base plate (1), characterized in that: The outer surface of the inner bushing (2) is fixedly provided with a reinforcing rib (5), and the inner surface of the reinforcing rib (5) is fitted with a snap-fit ​​frame (6), and the side surface of the snap-fit ​​frame (6) is fixedly provided with heat dissipation fins (7). The surface of the inner bushing (2) is coated with a wear-resistant composite coating.

2. The wear-resistant composite coating and reinforcing rib combined mandrel bushing according to claim 1, characterized in that: The outer side of the inner bushing (2) is provided with an outer sleeve (8), and a connecting plate (9) is fixedly provided on the outer surface of the outer sleeve (8). The outer surface of the base plate (1) is provided with a screw hole (10), and the base plate (1) is fitted with a bolt (11) through the screw hole (10), and one end of the bolt (11) is connected to a nut (12).

3. The wear-resistant composite coating and reinforcing rib combined mandrel bushing according to claim 1, characterized in that: The reinforcing ribs (5) are distributed at equal angles on the outer surface of the inner bushing (2), and the reinforcing ribs (5) have a continuous square-shaped hollow design.

4. The wear-resistant composite coating and reinforcing rib combined mandrel bushing according to claim 1, characterized in that: The snap-fit ​​frame (6) is designed in the shape of a square, and the outer surface of the snap-fit ​​frame (6) is in contact with the inner surface of the square-shaped cutout of the reinforcing rib frame (5), and the snap-fit ​​frame (6) and the reinforcing rib frame (5) are connected by a snap-fit ​​connection.

5. The wear-resistant composite coating and reinforcing rib combined mandrel bushing according to claim 1, characterized in that: The heat dissipation fins (7) are arc-shaped, and the two ends of the heat dissipation fins (7) are fixedly connected to the outer surfaces of the snap-fit ​​frames (6) on both sides.

6. The wear-resistant composite coating and reinforcing rib combined mandrel bushing according to claim 2, characterized in that: One end of the outer sleeve (8) is in contact with the outer surface of the substrate (1), and the inner surface of the outer sleeve (8) is in contact with the outer surface of the reinforcing rib (5). The outer sleeve (8) and the inner bushing (2) are concentrically arranged.

7. The wear-resistant composite coating and reinforcing rib combined mandrel bushing according to claim 2, characterized in that: One end of the bolt (11) passes through the connecting plate (9), and the end of the bolt (11) passing through the connecting plate (9) is threadedly connected to the nut (12).

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