Tapered roller bearing

Abstract

The utility model belongs to the field of bearings, and particularly relates to a tapered roller bearing which comprises an outer ring, an inner ring, a retainer and a plurality of tapered rollers, the inner ring is arranged in the outer ring, the retainer is arranged between the outer ring and the inner ring, the plurality of tapered rollers are respectively arranged on the retainer, and an annular protective cover is arranged on the retainer corresponding to the position between the outer ring and the inner ring. The annular protective cover covers the retainer and the tapered rollers, and a protective cavity is formed between the annular protective cover and the outer ring as well as between the annular protective cover and the inner ring; by additionally arranging the annular protective cover, dust can be prevented from entering the space between the outer ring and the inner ring through the annular protective cover, and the protective performance of the tapered roller bearing can be improved; and the sealing ring in sealing fit with the rotating shaft is arranged in the outer ring, so that impurities can be prevented from entering the space between the outer ring and the inner ring along the rotating shaft, and the working reliability of the tapered roller bearing can be improved.

Description

Technical Field

[0001] This utility model belongs to the field of bearing technology, specifically relating to a tapered roller bearing. Background Technology

[0002] Roller bearings are a type of rolling bearing and are widely used components in modern machinery. They support rotating parts through rolling contact between their main components. Roller bearings use short cylindrical, tapered, or drum-shaped rollers as rolling elements, and mainly include radial short cylindrical rollers, double-row radial spherical rollers, tapered rollers, and thrust rollers. Tapered roller bearings consist of an inner ring, an outer ring, a cage, and multiple tapered rollers, which are arranged between the inner and outer rings by the cage.

[0003] Existing tapered roller bearings have poor protective performance, and dust can easily enter between the inner and outer rings of the bearing, blocking the rolling of the tapered rollers and increasing the friction of the bearing. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide a tapered roller bearing that can effectively prevent dust from entering between the inner and outer rings, thus providing better protection.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A tapered roller bearing includes an outer ring, an inner ring, a cage, and a plurality of tapered rollers. The inner ring is disposed inside the outer ring, the cage is disposed between the outer ring and the inner ring, and the plurality of tapered rollers are respectively disposed on the cage. An annular protective cover is disposed on the cage between the outer ring and the inner ring. The annular protective cover covers the cage and the plurality of tapered rollers, and a protective cavity is formed between the annular protective cover and the outer ring and the inner ring.

[0006] In some embodiments, a sealing groove is provided inside the outer ring corresponding to the cage and below the plurality of tapered rollers, and a sealing ring that seals with the rotating shaft is provided in the sealing groove.

[0007] In some embodiments, the annular protective cover is provided with an annular groove that mates with the retainer, and the upper end of the retainer has a protruding ring portion that mates with the annular groove. The protruding ring portion is engaged in the annular groove, thus forming a snap-fit ​​engagement between the retainer and the annular protective cover.

[0008] In some embodiments, the annular protective cover has a first bend that covers the outer ring.

[0009] In some embodiments, the annular protective cover has a second bend that covers the inner ring.

[0010] In some embodiments, the upper ends of the plurality of tapered rollers are respectively provided with circular grooves.

[0011] In some embodiments, the cage is provided with a plurality of positioning holes arranged in a circular array, and the plurality of tapered rollers are respectively disposed in the plurality of positioning holes.

[0012] In some embodiments, the lower end of the cage is provided with an annular flange extending inward, and an oil storage space is formed between the annular flange and a plurality of tapered rollers.

[0013] In some embodiments, the outer peripheral wall of the inner ring is provided with an annular positioning groove that mates with a plurality of tapered rollers, and one side of the plurality of tapered rollers is disposed in the annular positioning groove.

[0014] The beneficial effects of this invention are as follows: By adding an annular protective cover, dust can be prevented from entering between the outer and inner rings, thus improving the protective performance of the tapered roller bearing. Furthermore, a sealing ring that seals with the shaft is provided inside the outer ring, preventing impurities from entering between the outer and inner rings along the shaft, thereby improving the operational reliability of the tapered roller bearing. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0016] Figure 1 This is a structural diagram of an embodiment of the present utility model;

[0017] Figure 2 for Figure 1 Enlarged view of part A:

[0018] Figure 3 This is a perspective view of the present invention after the annular protective cover has been removed.

[0019] Figure 4 This is a top view of the annular protective cover according to an embodiment of the present invention;

[0020] Figure 5 This is a perspective view of the retainer according to an embodiment of the present invention;

[0021] Figure 6 This is a perspective view of the inner ring of an embodiment of this utility model. Detailed Implementation

[0022] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be 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 utility model and are not intended to limit this utility model.

[0023] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0024] The directional and positional terms used in this utility model, such as up, down, front, back, left, right, inside, outside, top, bottom, side, etc., are only for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0025] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments:

[0026] like Figure 1-4 As shown, a tapered roller bearing includes an outer ring 1, an inner ring 2, a cage 3, and multiple tapered rollers 4. The inner ring 2 is disposed inside the outer ring 1, and the cage 3 is disposed between the outer ring 1 and the inner ring 2. The multiple tapered rollers 4 are respectively disposed on the cage 3. An annular protective cover 5 is disposed on the cage 3 corresponding to the space between the outer ring 1 and the inner ring 2. The annular protective cover 5 covers the cage 3 and the multiple tapered rollers 4, and a protective cavity 100 is formed between the annular protective cover 5, the outer ring 1, and the inner ring 2. By adding the annular protective cover, dust can be prevented from entering between the outer ring and the inner ring, which is beneficial to improving the protective performance of the tapered roller bearing. A sealing groove 11 is provided inside the outer ring 1 below the cage 3 and the multiple tapered rollers 4. A sealing ring 12 that seals with the shaft is disposed in the sealing groove 11. The sealing ring that seals with the shaft inside the outer ring can prevent impurities from entering between the outer ring and the inner ring along the shaft, thereby improving the working reliability of the tapered roller bearing. The annular protective cover 5 has an annular groove 51 that mates with the retainer 3. The upper end of the retainer 3 has a protruding ring portion 31 that mates with the annular groove 51. The protruding ring portion 31 engages within the annular groove 51, forming a snap-fit ​​connection between the retainer 3 and the annular protective cover 5. The annular protective cover and the retainer are assembled using a snap-fit ​​method, which facilitates the assembly of the annular protective cover and the retainer and improves assembly efficiency.

[0027] like Figure 2As shown, the annular protective cover 5 has a first bend 52 on its outer periphery that covers the outer ring 1. This first bend prevents dust from entering the bearing along the outer ring, thus improving protective performance. The annular protective cover 5 has a second bend 53 on its inner periphery that covers the inner ring 2. This second bend prevents dust from entering the bearing along the inner ring, thus improving protective performance. Multiple tapered rollers 4 each have a circular groove 41 at their upper ends. These circular grooves can hold more lubricating oil or grease, forming an oil film and reducing dry friction between the upper ends of the tapered rollers and the cage.

[0028] like Figure 1 , 2 As shown in Figure 5, the cage 3 has multiple positioning holes 32 arranged in a circular array, and multiple tapered rollers 4 are respectively disposed within the multiple positioning holes 32. The placement of the tapered rollers within the positioning holes of the cage facilitates the assembly of the multiple tapered rollers with the cage, resulting in higher assembly efficiency. The lower end of the cage 3 has an annular flange 33 extending inwards, forming an oil reservoir 300 between the annular flange 33 and the multiple tapered rollers 4. The annular flange enhances the overall strength of the cage, and the oil reservoir can store grease, extending the lubrication cycle and reducing wear and heat generation.

[0029] like Figure 2 , 6 As shown, the outer peripheral wall of the inner ring 2 is provided with an annular positioning groove 21 that mates with multiple tapered rollers 4, with one side of the multiple tapered rollers 4 positioned within the annular positioning groove 21. The annular positioning groove of the inner ring positions the multiple tapered rollers, thereby ensuring reliable rotation of the multiple tapered rollers between the outer and inner rings, which helps to improve the working reliability of the tapered roller bearing.

[0030] The above description is only one embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model; the scope of protection of the present utility model is defined by the claims in the claims, and all equivalent changes and modifications made in accordance with the utility model are within the scope of protection of the present utility model patent.

Claims

1. A tapered roller bearing, characterized in that: It includes an outer ring, an inner ring, a cage, and multiple tapered rollers. The inner ring is disposed inside the outer ring, and the cage is disposed between the outer ring and the inner ring. The multiple tapered rollers are respectively disposed on the cage. An annular protective cover is disposed on the cage between the outer ring and the inner ring. The annular protective cover covers the cage and the multiple tapered rollers, and a protective cavity is formed between the annular protective cover, the outer ring, and the inner ring.

2. The tapered roller bearing according to claim 1, characterized in that: A sealing groove is provided inside the outer ring corresponding to the cage and below the multiple tapered rollers, and a sealing ring that seals with the rotating shaft is provided in the sealing groove.

3. The tapered roller bearing according to claim 2, characterized in that: The annular protective cover is provided with an annular groove that mates with the retainer. The upper end of the retainer has a protruding ring that mates with the annular groove. The protruding ring engages with the annular groove, thus forming a snap-fit ​​connection between the retainer and the annular protective cover.

4. The tapered roller bearing according to claim 3, characterized in that: The annular protective cover has a first bend on the outer circumference that covers the outer ring.

5. The tapered roller bearing according to claim 3 or 4, characterized in that: The inner circumference of the annular protective cover has a second bend that covers the inner ring.

6. The tapered roller bearing according to claim 3 or 4, characterized in that: The upper ends of the plurality of tapered rollers are respectively provided with circular grooves.

7. The tapered roller bearing according to claim 1, characterized in that: The cage has multiple positioning holes arranged in a circular array, and the multiple tapered rollers are respectively disposed in the multiple positioning holes.

8. The tapered roller bearing according to claim 7, characterized in that: The lower end of the cage is provided with an annular flange extending inward, and an oil storage space is formed between the annular flange and multiple tapered rollers.

9. The tapered roller bearing according to claim 1, characterized in that: The outer peripheral wall of the inner ring is provided with an annular positioning groove that mates with multiple tapered rollers, and one side of the multiple tapered rollers is disposed in the annular positioning groove.

Images