Self-lubricating wear-resistant rolling bearing

Abstract

The invention discloses a self-lubricating wear-resistant rolling bearing, and relates to the technical field of bearings, the self-lubricating wear-resistant rolling bearing comprises a reinforcing assembly used for enhancing the strength of a plastic sliding surface rolling bearing, the reinforcing assembly comprises an inner ring and an outer ring, and the outer surface of the outer ring is provided with a plurality of metal sheets used for enhancing the structural strength of the rolling bearing. According to the self-lubricating wear-resistant rolling bearing, in order to further enhance the strength of the rolling bearing, firstly, a metal plate and a metal sheet are added into the inner plastic sliding surface and the outer plastic sliding surface respectively, and the metal surfaces are subjected to roughening treatment in an injection molding integrated forming mode; the bonding force between the inner plastic sliding face and the outer plastic sliding face is enhanced, the mechanical stability of the honeycomb structure of the honeycomb sleeve is used for dispersing pressure, weight increase caused by the fact that the whole plastic is too thick is avoided, the supporting strength is guaranteed, meanwhile, the material consumption is reduced, and finally the rolling bearing is more stable in operation, longer in service life and higher in bearing capacity.

Description

Technical Field

[0001] This invention relates to the field of bearing technology, specifically to a self-lubricating wear-resistant rolling bearing. Background Technology

[0002] Wear-resistant rolling bearings are a type of rolling bearing that, through material optimization, structural design improvements, and surface treatment, possesses enhanced wear resistance under friction and wear conditions. Their core objective is to address the problems of decreased precision, shortened lifespan, and abnormal noise caused by wear in ordinary rolling bearings, ensuring stable operation even under harsh conditions. The core design logic of wear-resistant rolling bearings is targeted optimization at easily worn points. Wear in rolling bearings mainly occurs at the contact surfaces between the rolling elements and the inner and outer ring raceways, the friction surfaces between the cage and the rolling elements, and the mating surfaces between the seals and the shaft or outer ring. The rolling surfaces are primarily made of plastic. Rolling bearings are core rotating support components in mechanical transmission systems. Through the rolling motion of the rolling elements between the inner and outer ring raceways, they replace traditional sliding friction, reducing frictional resistance, supporting the rotation of shaft components, and transmitting loads. They are one of the most widely used basic components in modern industrial equipment. Their core advantage is converting sliding friction into rolling friction, significantly reducing energy loss and improving rotational accuracy.

[0003] Currently, most engineering plastics used for sliding surfaces have extremely low coefficients of friction and their density is much lower than that of metals. Replacing metal sliding surfaces with plastic ones can reduce the overall weight of bearings by 30%-60%. For bearings that are sensitive to weight and require reduced inertia design, lightweighting can directly reduce drive energy consumption and improve equipment response speed. However, in wear-resistant rolling bearings with sliding surfaces made of plastic, the elastic modulus and compressive strength of plastic are far inferior to those of metals, and the rigidity of plastic is much lower than that of bearing steel. This makes it difficult for plastic sliding surface rolling bearings to meet the relevant usage requirements of equipment that requires high-precision operation and good bearing rigidity to maintain a stable structure and precise motion trajectory, thus reducing the performance of rolling bearings.

[0004] Therefore, we propose a self-lubricating, wear-resistant rolling bearing to solve the problems mentioned above. Summary of the Invention

[0005] The purpose of this invention is to provide a self-lubricating wear-resistant rolling bearing to solve the problems mentioned in the background art, such as the low compressive strength and reduced performance of wear-resistant rolling bearings with sliding surfaces made of plastic.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a self-lubricating wear-resistant rolling bearing, comprising a reinforcing component for increasing the strength of the plastic sliding surface rolling bearing, the reinforcing component comprising an inner ring and an outer ring, the outer surface of the outer ring being provided with a plurality of metal sheets for enhancing the structural strength of the rolling bearing, an outer plastic sliding surface being coupled between the outer surfaces of the plurality of metal sheets, the inner wall of the inner ring being provided with a honeycomb sleeve for dispersing pressure, the inner wall of the honeycomb sleeve being provided with an inner plastic sliding surface, the inner wall of the inner plastic sliding surface being provided with a metal plate for enhancing the strength of the rolling bearing, the outer plastic sliding surface being composed of a mixture of polyamide, carbon fiber, glass fiber, alumina powder and nano-sized ceramic particles, the outer surface of the outer plastic sliding surface being provided with a PVD coating, the outer surface of the PVD coating being provided with an epoxy resin coating, and the outer surface of the epoxy resin coating being provided with a metal coating.

[0007] Preferably, the reinforcing component further includes a cage, the inner wall of which is coupled with a plurality of balls, the outer surface of the inner ring has an inner raceway, the inner wall of the outer ring has an outer raceway, and the plurality of balls are disposed between the inner raceway and the inner wall of the outer raceway.

[0008] Preferably, two lubrication components are provided between the inner walls of the outer ring and the inner ring, and each of the two lubrication components includes a positioning frame.

[0009] Preferably, one outer surface of each of the two positioning frames is fixedly connected to the inner wall of the outer ring, and the other outer surface of each of the two positioning frames is fixedly connected to the inner wall of the inner ring.

[0010] Preferably, the inner walls of both positioning frames are coupled with shape memory alloy plates, and the inner walls of both positioning frames are slidably connected with movable plates, with the outer surfaces of the two movable plates respectively contacting the outer surfaces of the two shape memory alloy plates.

[0011] Preferably, multiple pistons are fixed to the outer surfaces of the two movable plates respectively, and a fixing ring is fixed between the relative inner walls of the two positioning frames at a position away from the shape memory alloy plate.

[0012] Preferably, the outer surfaces of the two fixed rings are provided with multiple oil grooves, the outer surfaces of the multiple pistons can move through the interior of the multiple oil grooves, and the outer surfaces of the two movable plates are provided with multiple elastic elements.

[0013] Preferably, one end of each of the plurality of elastic elements is fixedly connected to the outer surface of the movable plate, and the other end of each of the plurality of elastic elements is fixedly connected to the outer surface of the fixing ring.

[0014] Preferably, a connecting rod is fixedly installed between the relative inner walls of the plurality of oil tanks, a spring is provided on the outer surface of the plurality of connecting rods, and a push block is fixedly installed at one end of the plurality of springs.

[0015] Preferably, the other ends of the plurality of springs are fixedly connected to the outer surfaces of the plurality of connecting rods, and the outer surfaces of the plurality of push blocks slide against the inner walls of the plurality of oil grooves.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. To further enhance the strength of rolling bearings, metal plates and sheets are first added to the inner and outer plastic sliding surfaces, respectively. The metal surfaces are then roughened using injection molding to enhance their bonding strength with the inner and outer plastic sliding surfaces. The mechanical stability of the honeycomb structure of the honeycomb sleeve is utilized to distribute pressure, avoiding excessive weight increase due to excessive plastic thickness. This ensures support strength while reducing material usage, ultimately resulting in smoother operation, longer lifespan, and stronger load-bearing capacity for the rolling bearing. This addresses the problem of low compressive strength and reduced performance in existing wear-resistant rolling bearings with plastic sliding surfaces.

[0018] 2. To ensure the strength of both the inner and outer plastic sliding surfaces, thereby increasing the strength of the rolling bearing, the proportions of each component are determined during the processing of the outer plastic sliding surface based on the strength and wear resistance requirements of the bearing sliding surface. A specific amount of polyamide, carbon fiber, glass fiber, alumina powder, nano-sized ceramic particles, and a specific amount of antioxidant and lubricant are mixed and processed. After molding, the gate and flash are removed, internal stress is eliminated, and surface properties are optimized. A PVD coating isolates the plastic from the external environment, and the epoxy resin coating adheres firmly to the outer plastic sliding surface. The metal coating has a higher hardness than the plastic, forming a wear-resistant surface layer, reducing friction and wear between the plastic sliding surface and other components, and improving its service life. This effectively improves the rigidity and strength of the rolling bearing with a plastic sliding surface, enhancing its impact resistance and tensile strength, thus increasing the overall strength of the rolling bearing.

[0019] 3. During the operation of the rolling bearing, a large amount of heat is released, which causes the two shape memory alloy plates to expand due to heat. This pushes multiple pistons to move into the interior of multiple oil grooves, causing the lubricating oil in the oil grooves to slowly flow out through the gap between the pusher and the oil grooves and enter the interior of the rolling bearing. Driven by the external shaft, the rolling bearing rotates, causing the lubricating oil inside the rolling bearing to enter the interior of the rolling bearing under the action of rotational force, thereby achieving the purpose of self-lubrication of the rolling bearing interior. Attached Figure Description

[0020] Figure 1 This is a front perspective view of a self-lubricating wear-resistant rolling bearing according to the present invention;

[0021] Figure 2 This is a perspective view of a reinforcing component of a self-lubricating wear-resistant rolling bearing according to the present invention.

[0022] Figure 3 This is a perspective cross-sectional view of the outer ring portion of a self-lubricating wear-resistant rolling bearing according to the present invention.

[0023] Figure 4 This is a layered view of the outer plastic sliding surface of a self-lubricating wear-resistant rolling bearing according to the present invention;

[0024] Figure 5 This is a perspective view of the lubrication assembly of a self-lubricating wear-resistant rolling bearing according to the present invention.

[0025] Figure 6 This is a perspective view of the positioning frame portion of a self-lubricating wear-resistant rolling bearing according to the present invention.

[0026] Figure 7 This is a perspective cross-sectional view of the retaining ring portion of a self-lubricating wear-resistant rolling bearing according to the present invention.

[0027] Figure 8 For the present invention Figure 7 Enlarged view of point A in the middle.

[0028] In the picture:

[0029] 1. Reinforcing Components; 101. Inner Ring; 102. Outer Ring; 103. Cage; 104. Ball; 105. Honeycomb Sleeve; 106. Inner Plastic Sliding Surface; 107. Metal Plate; 108. Metal Sheet; 109. Outer Plastic Sliding Surface; 1091. Polyamide; 1092. Carbon Fiber; 1093. Glass Fiber; 1094. Alumina Powder; 1095. Nano-sized Ceramic Particles; 1096. PVD Coating; 1097. Epoxy Resin Coating; 1098. Metallic Coating; 110. Inner Raceway; 111. Outer Raceway; 2. Lubrication Components; 201. Positioning Frame; 202. Shape Memory Alloy Plate; 203. Moving Plate; 204. Piston; 205. Elastic Component; 206. Retaining Ring; 207. Connecting Rod; 208. Spring; 209. Push Block; 210. Oil Groove. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] Please see Figures 1-3This invention provides a technical solution: a self-lubricating wear-resistant rolling bearing, comprising a reinforcing component 1 for increasing the strength of the plastic sliding surface rolling bearing. The reinforcing component 1 includes an inner ring 101 and an outer ring 102. Multiple metal sheets 108 for enhancing the structural strength of the rolling bearing are disposed on the outer surface of the outer ring 102. An outer plastic sliding surface 109 is coupled between the outer surfaces of the multiple metal sheets 108. A honeycomb sleeve 105 for dispersing pressure is disposed on the inner wall of the inner ring 101. An inner plastic sliding surface 106 is disposed on the inner wall of the honeycomb sleeve 105. A metal plate 107 for enhancing the strength of the rolling bearing is disposed on the inner wall of the inner plastic sliding surface 106. The outer plastic sliding surface 109 is composed of a mixture of polyamide 1091, carbon fiber 1092, glass fiber 1093, alumina powder 1094, and nano-sized ceramic particles 1095. The outer surface of ring 09 is provided with a PVD coating 1096, the outer surface of the PVD coating 1096 is provided with an epoxy resin coating 1097, and the outer surface of the epoxy resin coating 1097 is provided with a metal coating 1098. The reinforcing component 1 also includes a cage 103. Multiple balls 104 are coupled to the inner wall of the cage 103. An inner raceway 110 is formed on the outer surface of the inner ring 101, and an outer raceway 111 is formed on the inner wall of the outer ring 102. Multiple balls 104 are all disposed between the inner walls of the inner raceway 110 and the outer raceway 111. Two lubrication components 2 are disposed between the inner walls of the outer ring 102 and the inner walls of the inner ring 101. Each of the two lubrication components 2 includes a positioning frame 201. One side of the outer surface of the two positioning frames 201 is fixedly connected to the inner wall of the outer ring 102, and the other side of the outer surface of the two positioning frames 201 is fixedly connected to the inner wall of the inner ring 101.

[0032] In this embodiment, in a wear-resistant rolling bearing with a sliding surface made of plastic, to further enhance the strength of the rolling bearing, a metal plate 107 and a metal sheet 108 are first added to the inner plastic sliding surface 106 and the outer plastic sliding surface 109, respectively. The metal surfaces are then roughened using injection molding to enhance the bonding force with the inner and outer plastic sliding surfaces 106 and 109. This allows the metal plate 107 and metal sheet 108 to bear 70%–80% of the radial and axial pressure, while the inner and outer plastic sliding surfaces 106 and 109 only bear the load. Pressure, compressive strength can be improved Furthermore, to further enhance the compressive strength of the wear-resistant rolling bearing, a honeycomb sleeve 105 is used. This utilizes the mechanical stability of the honeycomb structure to distribute pressure while avoiding excessive weight increase due to excessive overall plastic thickness. This ensures support strength while reducing material usage. For example, Figure 1As shown, the length of the inner plastic sliding surface 106 is greater than the length of the inner diameter of the rolling bearing, thereby increasing the contact area between the rolling bearing and its inner shaft. This allows the load of the rolling bearing to be evenly distributed over a larger contact area, effectively preventing wear and deformation of the outer shaft and inner ring 101 due to stress concentration, and extending their service life. This solves the four core problems of rolling bearing stress concentration, slippage, eccentricity, and loosening, ultimately achieving the goal of making the rolling bearing run more smoothly, have a longer service life, and a stronger load-bearing capacity.

[0033] like Figure 4 As shown, a self-lubricating wear-resistant rolling bearing includes a reinforcing component 1 for increasing the strength of the plastic sliding surface rolling bearing. The reinforcing component 1 includes an inner ring 101 and an outer ring 102. Multiple metal sheets 108 are disposed on the outer surface of the outer ring 102 to enhance the structural strength of the rolling bearing. Outer plastic sliding surfaces 109 are coupled between the outer surfaces of the multiple metal sheets 108. A honeycomb sleeve 105 for dispersing pressure is disposed on the inner wall of the inner ring 101. An inner plastic sliding surface 106 is disposed on the inner wall of the honeycomb sleeve 105. The inner wall of the inner plastic sliding surface 106 is provided with a metal plate 107 to enhance the strength of the rolling bearing. The outer plastic sliding surface 109 is made of polyamide 1091, carbon fiber 1092, glass fiber 1093, alumina powder 1094 and nano-sized ceramic particles 1095. The outer surface of the outer plastic sliding surface 109 is provided with a PVD coating 1096, the outer surface of the PVD coating 1096 is provided with an epoxy resin coating 1097, and the outer surface of the epoxy resin coating 1097 is provided with a metal coating 1098.

[0034] In this embodiment, in order to ensure the strength of the inner plastic sliding surface 106 and the outer plastic sliding surface 109, thereby increasing the strength of the rolling bearing, the following steps are taken during the processing of the outer plastic sliding surface 109:

[0035] 1. Based on the strength and wear resistance requirements of the bearing sliding surface, determine the proportion of each component, and prepare a certain amount of polyamide 1091, carbon fiber 1092, glass fiber 1093, alumina powder 1094, nano-sized ceramic particles 1095, and a certain amount of antioxidant and lubricant in a certain proportion, and pre-treat the raw materials.

[0036] Second, the use of a twin-screw extruder achieves uniform material dispersion through the triple action of shearing, mixing, and conveying.

[0037] 3. The extruder screw generates strong shear force through high-speed rotation, which melts the material and breaks down and disperses the filler into the polyamide 1091 melt;

[0038] IV. The molten mixture passes through a vacuum degassing section to remove moisture and volatiles, and is finally extruded through a mold into composite plastic strips, which are then cooled and cut into pellets by a pelletizer to form reinforced polyamide 1091 granules.

[0039] 5. After molding, open the mold, remove the plastic sliding surface, remove the gate and flash, eliminate internal stress, and optimize surface properties;

[0040] 6. Place the sliding surface in an oven and keep it warm at 120-150℃. The material is slowly cooled to room temperature over hours to achieve the processing of the outer plastic sliding surface 109;

[0041] A PVD coating 1096 is then added to the outer surface of the processed outer plastic sliding surface 109. The PVD coating 1096 forms a high-hardness film on the surface of the outer plastic sliding surface 109, effectively improving its wear resistance and reducing surface wear. Furthermore, the PVD coating 1096 isolates the plastic from the external environment, preventing chemical corrosion of the outer plastic sliding surface 109, improving its chemical stability and corrosion resistance, and extending its service life. Additionally, the epoxy resin coating 1097 has extremely high adhesion to the outer plastic sliding surface 109, firmly adhering to it and preventing peeling or flaking, ensuring optimal performance during use. The intermediate coating layer can continue to function. Finally, since the metal coating 1098 has a higher hardness than plastic, it can form a wear-resistant surface layer, reducing friction and wear between the plastic sliding surface and other components, and improving its service life. The outer plastic sliding surface 109 and the inner plastic sliding surface 106 are made of the same material. By strengthening the component 1 and pre-treating the plastic sliding surface, the rigidity and strength of the rolling bearing with the sliding surface made of plastic are effectively improved, enhancing its impact resistance and tensile strength, thereby improving the strength of the rolling bearing. This solves the problem in the prior art where the wear-resistant rolling bearing with the sliding surface made of plastic has low compressive strength, which reduces the performance of the rolling bearing.

[0042] like Figure 1 and Figures 5-8As shown, one outer surface of each of the two positioning frames 201 is fixedly connected to the inner wall of the outer ring 102, and the other outer surface of each of the two positioning frames 201 is fixedly connected to the inner wall of the inner ring 101. A shape memory alloy plate 202 is coupled to the inner wall of each of the two positioning frames 201. A movable plate 203 is slidably connected to the inner wall of each of the two positioning frames 201. The outer surfaces of the two movable plates 203 are in contact with the outer surfaces of the two shape memory alloy plates 202. Multiple pistons 204 are fixed to the outer surfaces of the two movable plates 203. A fixing ring 206 is fixed at a position away from the shape memory alloy plate 202 between the opposing inner walls of the two positioning frames 201. Multiple oil grooves 210 are formed on the outer surface of each of the two fixing rings 206. The outer surfaces of multiple pistons 204 extend into the interior of multiple oil grooves 210. Multiple elastic elements 205 are provided on the outer surfaces of two movable plates 203. One end of each elastic element 205 is fixedly connected to the outer surface of the movable plate 203, and the other end of each elastic element 205 is fixedly connected to the outer surface of the fixed ring 206. Connecting rods 207 are fixedly installed between the relative inner walls of the multiple oil grooves 210. Springs 208 are provided on the outer surfaces of the multiple connecting rods 207. Push blocks 209 are fixedly installed on one end of each spring 208. The other end of each spring 208 is fixedly connected to the outer surfaces of the multiple connecting rods 207. The outer surfaces of the multiple push blocks 209 slide against the inner walls of the multiple oil grooves 210.

[0043] In this embodiment, during the operation of the rolling bearing, the load, elastic deformation of components, relative sliding, viscous agitation of lubricant, and energy loss are converted into heat energy. Combined with external installation deviations, this ultimately releases a large amount of heat. This causes the two shape memory alloy plates 202 to expand due to heat. The working principle of the shape memory alloy plates 202 is their unique solid-state phase transformation characteristics. Specifically, the material undergoes a reversible transformation between martensite and austenite crystal structures at different temperatures, with significant differences in density, volume, and mechanical properties between the two phases. This ultimately manifests as macroscopic thermal expansion and restoration of the original shape upon cooling. Furthermore, the two shape memory alloy plates 202... During the thermal expansion process, the gold plate 202 is limited by the positioning frame 201, causing it to expand only towards the two moving plates 203. This pushes the two moving plates 203 towards the two fixed rings 206, compressing the multiple elastic elements 205. Consequently, the multiple pistons 204 move into the multiple oil grooves 210, each filled with a measured amount of lubricating oil for lubricating rolling bearings. During the pushing process of the pistons 204, the lubricating oil in the multiple oil grooves 210 moves towards the corresponding push blocks 209. Figure 8As shown, the cross-section of the pusher 209 corresponds to the internal cross-section of the oil groove 210, both being T-shaped. This is to facilitate the flow of lubricating oil from the oil groove 210 into the rolling bearing. Additionally, a sealing ring is provided on the contact surface between the pusher 209 and the oil groove 210 to prevent the lubricating oil in the oil groove 210 from flowing outwards arbitrarily. As the piston 204 pushes, it drives the lubricating oil in the oil groove 210 towards the pusher 209, causing the multiple pushers 209 to move towards the multiple balls 104 under the thrust of the lubricating oil, until... Figure 8 The sealing ring in the pusher 209 separates from the inner wall of the oil groove 210, allowing the lubricating oil in the oil groove 210 to slowly flow out through the gap between the pusher 209 and the oil groove 210, entering the interior of the rolling bearing. Driven by the external shaft, the rolling bearing rotates, allowing the lubricating oil inside the rolling bearing to enter the interior of the rolling bearing under the action of rotational force, thus achieving the purpose of self-lubrication of the rolling bearing. When the rolling bearing stops moving and its surface temperature drops to room temperature, the shape memory alloy plate 202 resets, causing the corresponding moving plate 203 to reset under the elastic action of multiple elastic elements 205. This causes multiple pistons 204 to move a certain distance to the outside of multiple oil grooves 210, thereby removing the pressure on the multiple pushers 209. The multiple pushers 209 then reset under the drive of multiple springs 208, sealing the multiple oil grooves 210. Through the action of the lubrication assembly 2, the purpose of self-lubrication of the rolling bearing is achieved.

[0044] The usage and working principle of this device are as follows: In a wear-resistant rolling bearing with sliding surfaces made of plastic, metal plates 107 and metal sheets 108 are first added to the inner plastic sliding surface 106 and the outer plastic sliding surface 109, respectively. The metal surfaces are then roughened using injection molding to enhance the bonding force with the inner and outer plastic sliding surfaces 106 and 109. This allows the metal plates 107 and 108 to bear 70%–80% of the radial and axial pressure, while the inner and outer plastic sliding surfaces 106 and 109 only bear the load. Pressure, compressive strength increased Furthermore, by using the honeycomb sleeve 105, the mechanical stability of the honeycomb structure is utilized to distribute pressure, while avoiding the increase in weight caused by excessive overall plastic thickness. This ensures support strength while reducing material usage. Figure 1 As shown, the length of the inner plastic sliding surface 106 is greater than the length of the inner diameter of the rolling bearing, thereby increasing the contact area between the rolling bearing and its internal shaft. This allows the load of the rolling bearing to be evenly distributed over a larger contact area. To ensure the strength of the inner plastic sliding surface 106 and the outer plastic sliding surface 109, and thus increase the strength of the rolling bearing, the following steps are taken during the processing of the outer plastic sliding surface 109:

[0045] 1. Based on the strength and wear resistance requirements of the bearing sliding surface, prepare a certain amount of polyamide 1091, carbon fiber 1092, glass fiber 1093, alumina powder 1094, nano-sized ceramic particles 1095, and a certain amount of antioxidant and lubricant in a certain proportion, and pre-treat the raw materials.

[0046] Second, the use of a twin-screw extruder achieves uniform material dispersion through the triple action of shearing, mixing, and conveying.

[0047] 3. The extruder screw generates strong shear force through high-speed rotation, which melts the material and breaks down and disperses the filler into the polyamide 1091 melt;

[0048] IV. The molten mixture passes through a vacuum degassing section to remove moisture and volatiles, and is finally extruded through a mold into composite plastic strips, which are then cooled and cut into pellets by a pelletizer to form reinforced polyamide 1091 granules.

[0049] 5. After molding, open the mold, remove the plastic sliding surface, remove the gate and flash, eliminate internal stress, and optimize surface properties;

[0050] 6. Place the sliding surface in an oven and keep it warm at 120-150℃. The material is slowly cooled to room temperature over hours to achieve the processing of the outer plastic sliding surface 109;

[0051] A PVD coating 1096 is added to the outer surface of the processed outer plastic sliding surface 109. The PVD coating 1096 can form a very hard film on the surface of the outer plastic sliding surface 109. The epoxy resin coating 1097 has extremely high adhesion to the outer plastic sliding surface 109 and can firmly adhere to it. Finally, since the metal coating 1098 has a higher hardness than plastic, it can form a wear-resistant surface layer, reducing friction and wear between the plastic sliding surface and other components. During the operation of the rolling bearing, the load, elastic deformation of components, relative sliding, viscous agitation of lubricant, and energy loss are converted into heat energy. Combined with external installation deviations, a large amount of heat will be released. At this time, the two shape memory alloy plates 202 will expand due to heat. In addition, during the process of thermal expansion, the two shape memory alloy plates 202 are subjected to... The positioning frame 201 limits its expansion, allowing it to expand only towards the two moving plates 203. This pushes the two moving plates 203 towards the two fixed rings 206, compressing the elastic elements 205. Consequently, the pistons 204 move into the oil grooves 210, each filled with a measured amount of lubricating oil for lubricating the rolling bearings. As the pistons 204 push, the lubricating oil in the oil grooves 210 moves towards the corresponding push blocks 209. A sealing ring is provided at the contact surface between the push blocks 209 and the oil grooves 210. With the pistons 204 pushing, the lubricating oil in the oil grooves 210 flows towards the push blocks 209, causing the push blocks 209 to move towards the balls 104 under the thrust of the lubricating oil, until... Figure 8 The sealing ring in the pusher 209 separates from the inner wall of the oil groove 210, allowing the lubricating oil in the oil groove 210 to slowly flow out through the gap between the pusher 209 and the oil groove 210 and enter the interior of the rolling bearing. Under the driving action of the external shaft, the rolling bearing is rotated, causing the lubricating oil in the rolling bearing to enter the interior of the rolling bearing under the action of the rotational force. When the rolling bearing stops moving and its surface temperature drops to room temperature, the shape memory alloy plate 202 resets, causing the corresponding moving plate 203 to reset under the elastic action of multiple elastic elements 205. This causes multiple pistons 204 to move a certain distance to the outside of multiple oil grooves 210, thereby removing the pressure on the multiple pushers 209. As a result, the multiple pushers 209 are reset under the drive of multiple springs 208, thus sealing the multiple oil grooves 210.

[0052] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A self-lubricating wear-resistant rolling bearing, comprising a reinforcing component (1) for increasing the strength of a plastic sliding surface rolling bearing, characterized in that: The reinforcing component (1) includes an inner ring (101) and an outer ring (102). The outer surface of the outer ring (102) is provided with a plurality of metal sheets (108) for enhancing the structural strength of the rolling bearing. An outer plastic sliding surface (109) is coupled between the outer surfaces of the plurality of metal sheets (108). The inner wall of the inner ring (101) is provided with a honeycomb sleeve (105) for dispersing pressure. The inner wall of the honeycomb sleeve (105) is provided with an inner plastic sliding surface (106). The inner wall of the inner plastic sliding surface (106) is provided with a metal plate (107) for enhancing the strength of the rolling bearing. The outer plastic sliding surface (109) is composed of polyamide (1091), carbon fiber (1092), glass fiber (1093), alumina powder (1094) and nano-sized ceramic particles (1095). The outer surface of the outer plastic sliding surface (109) is provided with a PVD coating (1096), the outer surface of the PVD coating (1096) is provided with an epoxy resin coating (1097), and the outer surface of the epoxy resin coating (1097) is provided with a metal coating (1098).

2. The self-lubricating wear-resistant rolling bearing according to claim 1, characterized in that: The reinforcing component (1) also includes a cage (103), with a plurality of balls (104) coupled to the inner wall of the cage (103). An inner raceway (110) is formed on the outer surface of the inner ring (101), and an outer raceway (111) is formed on the inner wall of the outer ring (102). The plurality of balls (104) are all disposed between the inner raceway (110) and the inner wall of the outer raceway (111).

3. The self-lubricating wear-resistant rolling bearing according to claim 2, characterized in that: Two lubrication components (2) are provided between the inner wall of the outer ring (102) and the inner ring (101), and both lubrication components (2) include a positioning frame (201).

4. The self-lubricating wear-resistant rolling bearing according to claim 3, characterized in that: One outer surface of each of the two positioning frames (201) is fixedly connected to the inner wall of the outer ring (102), and the other outer surface of each of the two positioning frames (201) is fixedly connected to the inner wall of the inner ring (101).

5. The self-lubricating wear-resistant rolling bearing according to claim 4, characterized in that: The inner walls of the two positioning frames (201) are coupled with shape memory alloy plates (202), and the inner walls of the two positioning frames (201) are slidably connected with moving plates (203). The outer surfaces of the two moving plates (203) are in contact with the outer surfaces of the two shape memory alloy plates (202).

6. The self-lubricating wear-resistant rolling bearing according to claim 5, characterized in that: Multiple pistons (204) are fixed to the outer surfaces of the two movable plates (203), and fixing rings (206) are fixed between the relative inner walls of the two positioning frames (201) at positions away from the shape memory alloy plate (202).

7. The self-lubricating wear-resistant rolling bearing according to claim 6, characterized in that: The outer surfaces of the two fixed rings (206) are provided with multiple oil grooves (210), the outer surfaces of the multiple pistons (204) can move through the interior of the multiple oil grooves (210), and the outer surfaces of the two movable plates (203) are provided with multiple elastic elements (205).

8. The self-lubricating wear-resistant rolling bearing according to claim 7, characterized in that: One end of each of the multiple elastic elements (205) is fixedly connected to the outer surface of the movable plate (203), and the other end of each of the multiple elastic elements (205) is fixedly connected to the outer surface of the fixing ring (206).

9. The self-lubricating wear-resistant rolling bearing according to claim 8, characterized in that: A connecting rod (207) is fixedly installed between the relative inner walls of the plurality of oil tanks (210), and a spring (208) is provided on the outer surface of the plurality of connecting rods (207), and a push block (209) is fixedly installed at one end of the plurality of springs (208).

10. The self-lubricating wear-resistant rolling bearing according to claim 9, characterized in that: The other ends of the multiple springs (208) are fixedly connected to the outer surfaces of the multiple connecting rods (207), and the outer surfaces of the multiple push blocks (209) slide against the inner walls of the multiple oil grooves (210).

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