Copper clad bushing for a load wheel

Abstract

The utility model discloses a kind of copper-coated bushings of supporting wheel, it is related to supporting wheel component technical field, including copper-coated layer and steel matrix, and steel matrix inner wall has copper-coated layer and is fused;Steel matrix outer wall is equipped with oil storage cavity;Oil storage cavity bottom is equipped with oil hole, and oil hole is communicated with copper-coated layer;Oil storage cavity inboard is communicated with oil inlet groove, and oil inlet groove one end extends to steel matrix inboard wall;The utility model copper-coated layer is fused on steel matrix by laser, plasma, electric arc spraying and the like process directly, significantly improve the bonding strength of copper material and steel matrix, effectively avoid copper material peeling;Copper bushing uses super-thick wall design to greatly improve overall structural strength, improve creep resistance, prolong service life.Stored in oil storage cavity on steel matrix stores certain lubricating oil, fully guarantee lubricating effect when rotating, greatly improve the service life of supporting wheel.

Description

Technical Field

[0001] This utility model relates to the technical field of support roller components, and more specifically to a copper-plated bushing for support rollers. Background Technology

[0002] The copper bushing is a crucial component of the support roller. Bushings are installed on both sides inside the roller body, forming an oil reservoir between the two bushings for oil storage. The inner wall of the bushing is coated with copper. The quality of the copper bushing affects the service life of the support roller. In harsh working conditions such as mines and polar regions, the copper bushing can withstand impact loads of 8-20 tons. Existing structures are prone to creep deformation, causing the wall thickness to decrease at a rate of 0.3-0.5 mm per year. This eventually leads to premature failure such as slippage of the friction surface and uneven wear of the support roller. At the same time, because the wall thickness is too thin, it is impossible to machine lubrication channels on the surface, which will lead to insufficient lubrication, accelerated wear, and premature failure. Utility Model Content

[0003] The purpose of this utility model is to provide a copper-plated bushing for a support roller in order to solve the above-mentioned technical problems.

[0004] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0005] A copper-clad bushing for a support roller includes a copper-clad layer and a steel substrate, wherein the inner wall of the steel substrate is fused with the copper-clad layer.

[0006] The outer wall of the steel substrate is equipped with an oil storage cavity;

[0007] An oil passage hole is provided at the bottom of the oil storage chamber, and the oil passage hole extends downward through the copper-clad layer;

[0008] The inner side of the oil storage chamber is connected to an oil inlet groove, which extends to the outer end face of the steel substrate. Wear-resistant copper material is directly fused onto the steel substrate using laser, arc spraying, or plasma fusion technology, which improves the bonding strength between the copper layer and the steel substrate. The oil inlet groove connects the oil storage chamber to the oil storage groove inside the wheel, facilitating oil intake.

[0009] The overall thickness of the copper-clad layer and the steel substrate is 5-30 mm. Experimental results show that the ultra-thick wall design of the copper-clad bushing significantly reduces creep and greatly extends its service life. Experimental data indicates that under a contact stress of 50 MPa, the creep of the copper-clad bushing of this invention decreases from 1.2 mm / 1000 h in the traditional structure to 0.34 mm / 1000 h, and the service life increases from 4000 working hours to 8000 hours.

[0010] The copper-clad layer extends to the outer end face of the steel substrate to form an annular end-face copper layer. Accessories (such as side covers) need to be installed on the outer side of the copper-clad layer. The annular end-face copper layer reduces friction, improves wear resistance, and extends the service life of the support roller. The width of the annular end-face copper layer is at least the width of the seal.

[0011] In this invention, the lubricating oil in the oil reservoir enters the oil storage chamber through the oil inlet. When the support roller rotates, the lubricating oil enters the gap between the copper-clad layer and the shaft through its own weight and centrifugal force to lubricate, thereby greatly extending the service life of the copper sleeve.

[0012] The beneficial effects of this utility model are as follows:

[0013] The steel substrate and copper-clad layer are joined by fusion bonding, which significantly improves the bonding strength between the copper and the steel substrate and effectively prevents the copper from peeling off. The copper-clad layer adopts an ultra-thick wall design, which greatly improves the overall structural strength, enhances creep resistance, and extends service life. The oil reservoir on the steel substrate stores a certain amount of lubricating oil, which ensures sufficient lubrication during rotation and greatly improves the service life of the support roller. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of the present invention.

[0016] Reference numerals in the attached diagram: 1. Copper cladding layer; 2. Steel substrate; 3. Oil reservoir; 4. Oil passage hole; 5. Oil inlet groove; 6. Annular end face copper layer. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0018] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0019] Example 1

[0020] like Figures 1 to 2As shown, this embodiment provides a copper-clad bushing for a support roller, including a copper-clad layer 1 and a steel substrate 2, wherein the inner wall of the steel substrate 2 is fused with the copper-clad layer 1;

[0021] The outer wall of the steel substrate 2 is provided with an oil storage cavity 3;

[0022] The bottom of the oil storage chamber 3 is provided with an oil passage hole 4, which extends downward through the copper cladding layer 1;

[0023] The inner side of the oil storage cavity 3 is connected to an oil inlet groove 5, which extends to the outer end face of the steel substrate 2. Wear-resistant copper material is directly fused onto the steel substrate 2 using laser, arc spraying, or plasma fusion technology, which improves the bonding strength between the copper layer and the steel substrate 2. The oil inlet groove 5 connects the oil storage cavity 3 to the oil storage groove inside the wheel body, facilitating oil intake.

[0024] The overall thickness of the copper-clad layer 1 and the steel substrate 2 is 5-30 mm. Experimental results show that the ultra-thick wall design of the copper-clad bushing significantly reduces creep and greatly extends the service life of the copper bushing. Experimental data shows that under a contact stress of 50 MPa, the creep of the copper bushing of this invention is reduced from 1.2 mm / 1000 h in the traditional structure to 0.34 mm / 1000 h, and the service life is increased from 4000 working hours to 8000 hours.

[0025] The copper-clad layer 1 extends to the outer end face of the steel substrate 2 to form an annular end face copper layer 6. Accessories (such as side covers) need to be installed on the outer side of the copper-clad layer 1. The annular end face copper layer 6 reduces friction, improves wear resistance, and extends the service life of the support roller. The width of the annular end face copper layer 6 is at least the width of the seal.

[0026] In this invention, the lubricating oil in the oil storage tank enters the oil storage cavity 3 through the oil inlet 5. When the support roller rotates, the lubricating oil enters the gap between the copper-clad layer 1 and the shaft through its own weight and centrifugal force to lubricate, thereby greatly extending the service life of the copper sleeve.

Claims

1. A copper-clad bushing for a support roller, comprising a copper-clad layer and a steel substrate, characterized in that: The inner wall of the steel substrate is clad with a copper-coated layer; The outer wall of the steel substrate is equipped with an oil storage cavity; An oil passage hole is provided at the bottom of the oil storage chamber, and the oil passage hole is connected to the copper cladding layer; The inner side of the oil storage cavity is connected to an oil inlet groove, which extends to the outer end face of the steel substrate.

2. The copper-plated bushing for the support roller according to claim 1, characterized in that, The overall thickness of the copper clad layer and the steel substrate is 5-30 mm.

3. The copper-plated bushing for the support roller according to claim 1, characterized in that, The copper cladding extends to the outer end face of the steel substrate to form an annular end face copper layer.

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