Long-life tapered roller bearing

Abstract

The utility model discloses a long -life tapered roller bearing, including inner race, outer ring, conical roller and retainer, the conical roller is evenly distributed on the tapered raceway between inner race and outer ring through retainer, still include positioning subassembly, the inner race outside wall and outer ring outside wall all are equipped with annular heat dissipation groove, the heat dissipation groove in along the even distribution of porous heat dissipation fin in the circumference, positioning subassembly includes the positioning protrusion of setting in the inner race outside wall and the positioning recess of setting in the outer ring inboard wall, positioning protrusion and positioning recess clearance fit, positioning protrusion detachable type installs one end of inner race, the fixed mounting of fixed plate is installed to one side of positioning protrusion, the one end of inner race is equipped with the mounting groove for installing fixed plate, and the fixed plate is inlayed in mounting groove. The utility model has the advantages of simple structure, good heat dissipation performance, accurate and reliable positioning, good lubrication effect, long service life etc. has higher practical value and popularization prospect.

Description

Technical Field

[0001] This utility model relates to the field of tapered roller bearing technology, specifically a high-life tapered roller bearing. Background Technology

[0002] Wheel hub bearings are one of the key components in automobile operation, playing a crucial role in bearing the weight of the vehicle body and transmitting power. Tapered roller bearings are widely used in automobile wheel hubs because they can withstand both radial and axial loads simultaneously.

[0003] With the rapid development of the automotive industry, people have placed higher demands on the reliability and service life of automobiles, which has led to increasingly higher performance requirements for wheel bearings. Traditional tapered roller bearings, due to severe friction and wear between the rollers and raceways and often inadequate lubrication during long-term use, are prone to failure, resulting in a short service life and failing to meet the high reliability and long lifespan requirements of modern automobiles. Utility Model Content

[0004] The purpose of this utility model is to provide a solution to the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-life tapered roller bearing, comprising an inner ring, an outer ring, tapered rollers, and a cage. The tapered rollers are evenly distributed on the tapered raceway between the inner and outer rings via the cage. The bearing also includes a positioning assembly. Both the outer wall of the inner ring and the outer wall of the outer ring have annular heat dissipation grooves. The heat dissipation grooves are uniformly provided with porous heat dissipation fins along their circumferential direction. The positioning assembly includes a positioning protrusion on the outer wall of the inner ring and a positioning groove on the inner wall of the outer ring. The positioning protrusion and the positioning groove are clearance-fitted. The positioning protrusion is detachably mounted on one end of the inner ring. A fixing plate is fixedly mounted on one side of the positioning protrusion. One end of the inner ring has a mounting groove for mounting the fixing plate, and the fixing plate is embedded in the mounting groove.

[0006] Preferably, the depth of the annular heat dissipation groove is 1-3 mm, the width is 2-4 mm, and the height of the porous heat dissipation fins is 1 / 2-2 / 3 of the depth of the heat dissipation groove.

[0007] Preferably, the positioning protrusion is an annular protrusion arranged along the inner circumference, and the positioning groove is an annular groove arranged along the outer circumference, with a fitting gap of 0.05 to 0.1 mm.

[0008] Preferably, the tapered roller has an internal cavity, a magnetic rod is installed inside the cavity, and a plug is provided at one end of the cavity, the plug being threadedly connected to the inner wall of the cavity.

[0009] Preferably, the cage has lubricating oil holes, which are evenly distributed along the circumference of the cage, and the number of such holes is 16 to 24.

[0010] Preferably, the inner and outer rings are made of high-carbon chromium bearing steel, and the tapered rollers are made of chromium-molybdenum alloy.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. This utility model effectively improves the heat dissipation performance of the bearing and reduces its operating temperature by creating annular heat dissipation grooves on both the outer walls of the inner and outer rings and installing porous heat dissipation fins within these grooves, thereby extending the bearing's service life. Simultaneously, the design of the positioning components ensures more accurate and reliable positioning of the inner and outer rings, preventing bearing failure due to inaccurate positioning. Furthermore, the tapered rollers have internal cavities and are fitted with magnetic rods, which further improve the bearing's lubrication and reduce friction and wear between the rollers and raceways.

[0013] 2. The lubricating oil holes on the cage of this utility model facilitate the uniform distribution of lubricating oil, improving the lubrication performance of the bearing. The inner and outer rings are made of high-carbon chromium bearing steel, and the tapered rollers are made of chromium-molybdenum alloy. The use of these high-quality materials further improves the wear resistance and service life of the bearing. Attached Figure Description

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

[0015] Figure 2 This is a schematic diagram of the inner ring and cage structure of this utility model;

[0016] Figure 3 This is a schematic diagram of the cross-section of the positioning protrusion of this utility model;

[0017] Figure 4 This is a schematic diagram of the internal structure of the tapered roller of this utility model.

[0018] In the diagram: 1. Inner ring; 2. Outer ring; 3. Tapered roller; 4. Annular heat dissipation groove; 5. Perforated heat dissipation fins; 6. Positioning protrusion; 7. Positioning groove; 8. Fixing plate; 9. Mounting groove; 10. Cavity; 11. Magnetic rod; 12. Plug; 13. Cage; 14. Lubricating oil hole. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-4 This utility model provides a high-life tapered roller bearing technical solution: including an inner ring 1, an outer ring 2, tapered rollers 3, and a cage 13. The tapered rollers 3 are evenly distributed on the tapered raceway between the inner ring 1 and the outer ring 2 through the cage 13. The feature is that it also includes a positioning component. The outer walls of the inner ring 1 and the outer walls of the outer ring 2 are both provided with annular heat dissipation grooves 4. The heat dissipation grooves 4 are uniformly provided with porous heat dissipation fins 5 along the circumferential direction. The positioning component includes a positioning protrusion 6 provided on the outer wall of the inner ring 1 and a positioning groove 7 provided on the inner wall of the outer ring 2. The positioning protrusion 6 and the positioning groove 7 are clearance-fitted. The positioning protrusion 6 is detachably installed at one end of the inner ring 1. A fixing plate 8 is fixedly installed on one side of the positioning protrusion 6. A mounting groove 9 for installing the fixing plate 8 is provided at one end of the inner ring 1. The fixing plate 8 is embedded in the mounting groove 9.

[0021] Furthermore, the depth of the annular heat dissipation groove 4 is 1-3 mm, the width is 2-4 mm, and the height of the porous heat dissipation fins 5 is 1 / 2-2 / 3 of the depth of the heat dissipation groove 4.

[0022] In this embodiment, the number of porous heat dissipation fins 5 is adaptively adjusted according to the size of the heat dissipation groove 4 to maximize the heat dissipation area and improve heat dissipation efficiency. The combined design of the heat dissipation groove 4 and porous heat dissipation fins 5 not only increases the heat dissipation area of ​​the bearing but also effectively guides the flow of heat, allowing heat to dissipate more quickly, thereby reducing the bearing's operating temperature and extending its service life. Furthermore, this design also improves the bearing's load-bearing capacity and fatigue resistance, making the bearing more stable and reliable during high-speed operation.

[0023] Furthermore, the positioning protrusion 6 is an annular protrusion arranged along the inner ring 1, and the positioning groove 7 is an annular groove arranged along the outer ring 2, with a fitting gap of 0.05 to 0.1 mm.

[0024] In this embodiment, the annular design of the positioning protrusion 6 and the positioning groove 7 not only ensures precise positioning between the inner ring 1 and the outer ring 2, but also makes the installation and disassembly process simpler and faster. Precise control of the clearance ensures the stability of the bearing during operation and avoids vibration and noise problems caused by excessive clearance. Furthermore, the detachable installation of the positioning protrusion 6 on the inner ring 1 allows for easy separation of the inner ring 1 and outer ring 2 when maintenance or replacement of the bearing is required, greatly improving the convenience of maintenance.

[0025] Furthermore, the tapered roller 3 has a cavity 10 inside, a magnetic rod 11 is installed inside the cavity 10, and a plug 12 is provided at one end of the cavity 10, the plug 12 being threadedly connected to the inner wall of the cavity 10.

[0026] In this embodiment, the tapered roller 3 not only reduces the overall weight of the roller and lowers the energy consumption of the bearing during operation, but also increases the self-lubricating performance of the roller through the introduction of the magnetic rod 11. The magnetic rod 11 can attract and retain a certain amount of lubricating oil. As the roller rotates, the lubricating oil is evenly coated on the working surface of the roller, thereby effectively reducing friction and wear between the roller and the inner and outer rings. In addition, the threaded connection between the plug 12 and the inner wall of the cavity 10 facilitates the replacement or maintenance of the magnetic rod 11 inside the cavity 10, further improving the ease of use and durability of the bearing.

[0027] Furthermore, the retainer 13 is provided with lubricating oil holes 14, which are evenly distributed around the circumference of the retainer 13, and the number of such holes is 16 to 24.

[0028] In this embodiment, the lubrication hole 14 allows external lubricating oil to smoothly enter the bearing, providing sufficient lubrication for the tapered rollers 3 and the inner and outer rings. This design not only improves lubrication and ensures efficient bearing operation, but also reduces wear and failures caused by insufficient lubrication, further extending the bearing's service life.

[0029] Furthermore, the inner ring 1 and outer ring 2 are made of high-carbon chromium bearing steel, and the tapered roller 3 is made of chromium-molybdenum alloy, which has high hardness and wear resistance. The tapered roller 3 is made of chromium-molybdenum alloy, which has high strength and toughness. The selection of these materials further improves the service life and reliability of the bearing.

[0030] Working Principle: In use, the inner ring 1 is installed on the journal, and the outer ring 2 is installed in the bearing housing bore. Tapered rollers 3 are evenly distributed on the tapered raceway between the inner ring 1 and the outer ring 2 via the cage 13. As the shaft rotates, the tapered rollers 3 roll on the tapered raceway, thus realizing the bearing's operation. During this process, the clearance fit between the positioning protrusion 6 and the positioning groove 7 ensures precise positioning between the inner ring 1 and the outer ring 2, avoiding vibration and noise problems caused by excessive clearance. Simultaneously, the combined design of the annular heat dissipation groove 4 and the porous heat dissipation fins 5 effectively dissipates the heat generated during bearing operation, reducing the bearing's operating temperature and extending its service life. The design of the cavity 10 and magnetic rod 11 inside the tapered rollers 3 increases the self-lubricating performance of the rollers, reducing friction and wear between the rollers and the inner and outer rings. The lubrication holes 14 on the cage 13 allow external lubricating oil to smoothly enter the bearing, providing sufficient lubrication for the tapered rollers 3 and the inner and outer rings, further improving the bearing's lubrication effect and operating efficiency. In addition, the inner ring 1 and outer ring 2 are made of high-carbon chromium bearing steel, and the tapered roller 3 is made of chromium-molybdenum alloy. The selection of these materials further improves the bearing's hardness and wear resistance, as well as its strength and toughness, thereby ensuring the bearing's high reliability and long service life.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] 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 high-life tapered roller bearing, comprising an inner ring (1), an outer ring (2), tapered rollers (3), and a cage (13), wherein the tapered rollers (3) are evenly distributed on a tapered raceway between the inner ring (1) and the outer ring (2) via the cage (13), characterized in that: It also includes a positioning component. The outer wall of the inner ring (1) and the outer wall of the outer ring (2) are provided with annular heat dissipation grooves (4). The heat dissipation grooves (4) are uniformly provided with porous heat dissipation fins (5) along the circumferential direction. The positioning component includes a positioning protrusion (6) provided on the outer wall of the inner ring (1) and a positioning groove (7) provided on the inner wall of the outer ring (2). The positioning protrusion (6) and the positioning groove (7) are in clearance fit. The positioning protrusion (6) is detachably installed at one end of the inner ring (1). A fixing plate (8) is fixedly installed on one side of the positioning protrusion (6). A mounting groove (9) for mounting the fixing plate (8) is provided at one end of the inner ring (1). The fixing plate (8) is embedded in the mounting groove (9).

2. The high-life tapered roller bearing according to claim 1, characterized in that, The depth of the annular heat dissipation groove (4) is 1-3 mm and the width is 2-4 mm. The height of the porous heat dissipation fins (5) is 1 / 2-2 / 3 of the depth of the heat dissipation groove (4).

3. A high-life tapered roller bearing according to claim 2, characterized in that, The positioning protrusion (6) is an annular protrusion arranged along the circumference of the inner ring (1), and the positioning groove (7) is an annular groove arranged along the circumference of the outer ring (2). The fit gap between the two is 0.05 to 0.1 mm.

4. A high-life tapered roller bearing according to claim 3, characterized in that, The conical roller (3) has a cavity (10) inside, a magnetic rod (11) is installed in the cavity (10), and a plug (12) is provided at one end of the cavity (10), the plug (12) is threaded to the inner wall of the cavity (10).

5. A high-life tapered roller bearing according to claim 4, characterized in that, The retainer (13) has lubricating oil holes (14) which are evenly distributed around the retainer (13) and number 16 to 24.

6. A high-life tapered roller bearing according to claim 5, characterized in that, The inner ring (1) and outer ring (2) are made of high carbon chromium bearing steel, and the tapered roller (3) is made of chromium-molybdenum alloy.

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