Tapered roller bearing

Abstract

The utility model discloses a tapered roller bearing, relates to bearing technical field, including outer ring, inner ring, retainer, tapered roller, first baffle plate and second baffle plate, the inner ring is provided with annular groove, the retainer is provided with tapered through hole, the tapered roller is arranged on the tapered through hole, the retainer is sleeved on the inner ring, and the first baffle plate and the second baffle plate are arranged on the retainer. The retainer is sleeved with the outer ring, an annular groove formed in the inner ring and the inner wall of the outer ring are both conical, the circumferential face of the tapered roller abuts against the annular groove of the inner ring and abuts against the inner wall of the outer ring, the first baffle is arranged at the end, with the small outer diameter, of the inner ring, and the second baffle is arranged at the end, with the small outer diameter, of the inner ring. The first baffle is arranged at the end, with the large outer diameter, of the inner ring, the second baffle is arranged at the end, with the large outer diameter, of the inner ring, the first baffle and the second baffle are installed on the inner ring and exactly cover an annular hole which enables the tapered roller to be exposed to the outside originally, dust and other impurities in air are difficult to enter, and therefore normal operation of the tapered roller bearing is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to a tapered roller bearing. Background Art

[0002] Tapered roller bearings are radial thrust rolling bearings whose rolling elements are tapered rollers. They consist of an inner ring, an outer ring, rollers, and a cage. The raceways of the inner and outer rings are tapered to accommodate the tapered shape of the rollers. This design enables tapered roller bearings to withstand both radial and axial loads, making them suitable for bidirectional force transmission. They are widely used in various industrial equipment and mechanical devices. During use, attention should be paid to correct installation, proper lubrication, regular inspection, and avoiding overloading to ensure stable operation of the bearings and extend their service life.

[0003] The patent with publication date of December 8, 2023 and announcement number CN220151728U discloses a tapered roller bearing retainer and a tapered roller bearing, comprising a first ring portion, a second ring portion and a plurality of spacer beams. The diameter of the first ring portion is larger than the diameter of the second ring portion. The plurality of spacer beams are evenly distributed circumferentially between the first ring portion and the second ring portion, and tapered pockets for assembling tapered rollers are formed between adjacent spacer beams. Oil storage tanks are respectively provided on the left and right side walls of the spacer beams, and the left and right oil storage tanks are connected by a first connecting channel. An annular oil storage channel is provided in the second ring portion, and the annular oil storage channel is connected to the first connecting channel through a second connecting channel. An oil filling port connected to the annular oil storage channel is provided at the small-diameter end of the second ring portion, and a sealing member for sealing the oil filling port is provided on the oil filling port. The present application has an oil storage structure, which is convenient for adding lubricating oil and has a good lubrication effect.

[0004] As an important mechanical component, tapered roller bearings are widely used in the automotive industry, railway transportation, wind power generation and other fields. Under these environmental conditions, external dust and other impurities can easily penetrate into the bearings, causing scratches, indentations, and even cracks, fractures and other damage to the bearings, affecting their use. The above solution considers adding an oil storage structure to the tapered roller bearing cage to facilitate the addition of lubricating oil and achieve better lubrication effect. However, it does not take into account that during the actual use of the tapered roller bearings, dust and other impurities in the environment can easily penetrate into the bearings, affecting the service life of the bearings.

[0005] Therefore, it is necessary to provide a tapered roller bearing. Utility Model Content

[0006] The embodiment of the present application provides a tapered roller bearing, which can improve the problem in the related art that dust and other impurities in the environment can easily penetrate into the interior of the bearing, affecting the service life of the bearing.

[0007] An embodiment of the present application provides a tapered roller bearing, comprising an outer ring, an inner ring, a retaining frame, a tapered roller, a first baffle and a second baffle, the inner ring being provided with an annular groove, the retaining frame being provided with a tapered through hole, the tapered roller being arranged on the tapered through hole, the retaining frame being sleeved on the inner ring, the outer ring being sleeved on the retaining frame, the annular groove provided on the inner ring and the inner wall of the outer ring being tapered, the circumferential surface of the tapered roller being in contact with the annular groove of the inner ring and the inner wall of the outer ring respectively, the outer diameter of one end of the inner ring being larger than the outer diameter of the other end, the first baffle being arranged on the end of the inner ring having a smaller outer diameter, and the second baffle being arranged on the end of the inner ring having a larger outer diameter.

[0008] An embodiment of the present application provides a tapered roller bearing. When the tapered roller bearing is used on a device, a retainer is provided on the outer ring, and the retainer is provided on the inner ring, resulting in a portion of the tapered roller being exposed to the outside world. The first baffle and the second baffle greatly reduce the exposure of the tapered roller to the external environment, ensuring that dust and other impurities in the environment are difficult to enter the internal space of the retainer, thereby affecting the normal rotation of the tapered roller.

[0009] The above-mentioned technical solution in the embodiment of the present application has at least the following technical effects: after the first baffle and the second baffle are installed on the inner ring, they just cover the annular pores that originally exposed the tapered roller to the outside world, and impurities such as dust in the air are difficult to enter, thereby ensuring the normal operation of the tapered roller bearing. The inner ring and outer ring raceways are both tapered to adapt to the tapered shape of the roller. This design enables the tapered roller bearing to withstand radial loads and axial loads at the same time, and is suitable for bidirectional force transmission.

[0010] In some embodiments, a plurality of grooves are provided at both ends of the inner ring, a slide rail is provided in the groove, one end of the slide rail is fixedly connected in the groove, a slider and a spring are provided on the slide rail, a through hole is provided on the slider, the slider is slidably connected to the slide rail through the through hole, the spring is sleeved on the slide rail, one end of the spring abuts against the inner ring, and the other end of the spring abuts against the slider.

[0011] In some embodiments, an end of the slider away from the spring is chamfered.

[0012] In some embodiments, a limit block is provided in the groove, near the smaller end of the slider on the inner ring.

[0013] In some embodiments, a clamping block is provided on both the first baffle and the second baffle, and the clamping block is L-shaped.

[0014] In some embodiments, through holes are formed on the first baffle and the second baffle, and filter membranes are provided on the through holes.

[0015] In some embodiments, a protective ring is provided on the second baffle, one end of the protective ring is fixedly connected to the second baffle, and the other end of the protective ring does not contact the outer ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 A schematic diagram of the overall structure of a tapered roller bearing provided in an embodiment of the present application;

[0018] Figure 2 An exploded schematic diagram of the overall structure of a tapered roller bearing provided in an embodiment of the present application;

[0019] Figure 3 A schematic diagram of a partially annular structure of the inner ring of a tapered roller bearing provided in an embodiment of the present application;

[0020] Figure 4 for Figure 3 Enlarged view of part A.

[0021] Among them, the reference numerals in the figures are:

[0022] 1. Outer ring; 2. Cage; 3. Inner ring; 4. Tapered roller; 5. First baffle; 6. Second baffle; 7. Slide rail; 8. Slider; 9. Spring; 10. Limit block; 11. Block; 12. Filter membrane; 13. Protective ring. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the accompanying drawings are intended to cover non-exclusive inclusions.

[0025] To improve the problem that dust and other impurities in the environment easily invade the inside of the bearing and affect the service life of the bearing when the tapered roller bearing in the related art is used in different environments, embodiments of the present application provide the following solutions.

[0026] For reference Figure 1 and Figure 2 , including an outer ring 1, an inner ring 3, a retainer 2, a tapered roller 4, a first baffle 5 and a second baffle 6, the inner ring 3 is provided with an annular groove, the retainer 2 is provided with a tapered through hole, the tapered roller 4 is rotatably connected to the tapered through hole, the retainer 2 is sleeved on the inner ring 3, the outer ring 1 is sleeved on the retainer 2, the annular groove of the inner ring 3 and the inner wall of the outer ring 1 are all tapered, the peripheral surface of the tapered roller 4 respectively abuts against the annular groove of the inner ring 3 and the inner wall of the outer ring 1, the outer diameter of one end of the inner ring 3 is larger than that of the other end, the first baffle 5 is clamped at the end of the inner ring 3 with smaller outer diameter, and the second baffle 6 is clamped at the end of the inner ring 3 with larger outer diameter.

[0027] In this way, the retainer 2 is used to fix and separate the rollers, ensuring that they can be uniformly distributed on the raceway and preventing them from colliding with each other during rotation, the inner ring 3 and the outer ring 1 both have tapered raceways, the shape of the tapered roller 4 matches the tapered raceways of the inner and outer rings 1, the design of these raceways enables the tapered roller 4 to achieve pure rolling therein, the rollers roll on the raceways to realize the rotary motion of the bearing, due to the tapered design of the retainer 2, the gap between the small-diameter end of the inner ring 3, the small-diameter end of the outer ring 1 and the small-diameter end of the retainer 2 is small, so the area ratio of the first baffle 5 is small, the gap between the large-diameter end of the inner ring 3, the large-diameter end of the outer ring 1 and the large-diameter end of the retainer 2 is large, so the area ratio of the second baffle 6 is large, but the first baffle 5 and the second baffle 6 are both designed to block the gap exactly, the first baffle 5 and the second baffle 6 do not have direct contact with the outer ring 1, and the first baffle 5 and the second baffle 6 are both annular, the diameter of the central circle is equal to the diameter of the inner ring 3, and the tapered roller bearing can be sleeved on the journal without affecting it.

[0028] Optionally, in some embodiments, for reference Figure 2-Figure 4 , the first baffle 5 and the second baffle 6 are both fixedly connected with a clamping block 11, the clamping block 11 is L-shaped, the inner ring 3 is provided with a plurality of T-shaped grooves at both ends, a sliding rail 7 is fixedly connected in the grooves, one end of the sliding rail 7 is fixedly connected in the groove, a sliding block 8 and a spring 9 are arranged on the sliding rail 7, the sliding block 8 is provided with a through hole, the sliding block 8 is slidably connected to the sliding rail 7 through the through hole, the spring 9 is sleeved on the sliding rail 7, one end of the spring 9 abuts against the inner ring 3, and the other end of the spring 9 abuts against the sliding block 8.

[0029] With this arrangement, the end of the L-shaped block 11 away from the baffle is the same size as the entrance of the corresponding T-shaped groove, and the L-shaped block 11 can slide into the T-shaped groove. When installing the first baffle 5 and the second baffle 6, it is only necessary to align the large-diameter end of the L-shaped block 11 with the entrance of the T-shaped groove and then press down. During the pressing process of the first baffle 5 and the second baffle 6, the extrusion slider 8 moves along the slide rail 7 and compresses the spring 9. When the L-shaped block 11 is pressed to the maximum extent, it stops squeezing and no longer operates on the first baffle 5 and the second baffle 6. The spring 9 recovers from the compressed state to its original state, pushing the slider 8 to slide The rail 7 slides along the direction of the card block 11, and the protruding part of the L-shaped card block 11 slides into the recessed part of the T-shaped groove to fix the first baffle 5 and the second baffle 6. If people need to remove the first baffle 5 and the second baffle 6, they need to rotate the first baffle 5 and the second baffle 6 counterclockwise and pull them upward to remove them. When rotating counterclockwise, the L-shaped card block 11 pushes the slider 8 to slide on the slide rail 7 toward the spring 9, compressing the spring 9. When the side of the L-shaped card block 11 close to the spring 9 contacts the surface of the T-shaped groove, it can be pulled upward to allow the L-shaped card block 11 to slide out of the T-shaped groove.

[0030] Optionally, in some embodiments, please refer to Figure 4 The end of the slider 8 away from the spring 9 is chamfered.

[0031] With this arrangement, sharp corners are common areas of stress concentration. When the first baffle 5 and the second baffle 6 are pressed, the block 11 contacts the slider 8. The chamfered design allows the slider 8 to decompose the downward force originally exerted on the slider into part of the downward force and part of the force in the direction of the spring 9, thereby enabling the slider 8 to slide on the slide rail 7.

[0032] Optionally, in some embodiments, please refer to Figure 4 In the groove, a limiting block 10 is bonded to the smaller end of the inner ring 3 close to the slider 8.

[0033] With such arrangement, in order to ensure that the first baffle 5 and the second baffle 6 can be better fixed, the spring 9 is always kept in a compressed state, but the degree of compression varies according to the position of the slider 8 on the slide rail 7. During the installation of the first baffle 5 and the second baffle 6, the presence of the limit block 10 controls the slider 8 to be on the inclined surface in the moving path of the block 11 in the T-groove, while ensuring that the spring 9 is always in a compressed state, thereby ensuring the fixing effect of the first baffle 5 and the second baffle 6.

[0034] Optionally, in some embodiments, please refer to Figure 1 as well as Figure 2 The first baffle 5 and the second baffle 6 are both provided with through holes, and the filter membrane 12 is movably connected to the through holes.

[0035] With such a configuration, dust enters the clearance of the tapered roller bearing, which will cause the clearance space to be compressed, while increasing the friction of the tapered roller 4 and increasing heat generation. Opening a channel will help dissipate and cool the heat. The design of the filter membrane 12 helps block dust without blocking air circulation, does not affect heat dissipation, and extends the service life of the bearing.

[0036] Optionally, in some embodiments, please refer to Figure 1 as well as Figure 2 A protective ring 13 is bonded to the second baffle 6, one end of the protective ring 13 is fixedly connected to the second baffle 6, and the other end of the protective ring 13 is in the same plane as the end of the outer ring 1 away from the compression spring 9, but not in direct contact.

[0037] With this arrangement, because the outer ring 1 is slightly lower than the inner ring 3, and the retainer 2 is mounted on the inner ring 3, and the outer ring 1 is mounted on the retainer 2, the small-diameter end of the inner ring 3 is flush with the small-diameter end of the outer ring 1, causing the large-diameter end of the inner ring 3 to extend beyond the plane of the large-diameter end of the outer ring 1. Furthermore, because the second baffle 6 is clamped to the large-diameter end of the inner ring 3, a large gap remains between the second baffle 6 and the large-diameter end of the outer ring 1. The design of the protective ring 13 blocks this gap, reducing the risk of the bearing interior being affected by environmental dust. The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application shall be included within the scope of protection of this application.

Claims

1. A tapered roller bearing, characterized in that: The invention comprises an outer ring (1), an inner ring (3), a retaining frame (2), a tapered roller (4), a first baffle (5) and a second baffle (6), wherein the inner ring (3) is provided with an annular groove, the retaining frame (2) is provided with a tapered through hole, the tapered roller (4) is arranged on the tapered through hole, the retaining frame (2) is sleeved on the inner ring (3), the outer ring (1) is sleeved on the retaining frame (2), the annular groove provided on the inner ring (3) and the inner wall of the outer ring (1) are both tapered, the circumferential surface of the tapered roller (4) respectively abuts against the annular groove of the inner ring (3) and the inner wall of the outer ring (1), the outer diameter of one end of the inner ring (3) is larger than the outer diameter of the other end, the first baffle (5) is provided on the end of the inner ring (3) with a smaller outer diameter, and the second baffle (6) is provided on the end of the inner ring (3) with a larger outer diameter.

2. A tapered roller bearing according to claim 1, characterized in that: A plurality of grooves are provided at both ends of the inner ring (3), and a slide rail (7) is provided in the groove. One end of the slide rail (7) is fixedly connected in the groove. A slider (8) and a spring (9) are provided on the slide rail (7). The slider (8) is provided with a through hole. The slider (8) is slidably connected to the slide rail (7) through the through hole. The spring (9) is sleeved on the slide rail (7). One end of the spring (9) abuts against the inner ring (3), and the other end of the spring (9) abuts against the slider (8).

3. A tapered roller bearing according to claim 2, characterized in that: One end of the slider (8) away from the spring (9) is provided with a chamfer.

4. A tapered roller bearing according to claim 3, characterized in that: In the groove, a limiting block (10) is provided on the inner ring (3) near the smaller end of the slider (8).

5. The tapered roller bearing according to claim 4, characterized in that: A clamping block (11) is provided on both the first baffle (5) and the second baffle (6).

6. The tapered roller bearing according to claim 5, characterized in that: The first baffle (5) and the second baffle (6) are both provided with through holes, and filter membranes (12) are provided on the through holes.

7. The tapered roller bearing according to claim 6, characterized in that: A protective ring (13) is provided on the second baffle (6), one end of the protective ring (13) is fixedly connected to the second baffle (6), and the other end of the protective ring (13) does not contact the outer ring (1).

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