Thin-wall high-precision tapered roller bearing

Abstract

The utility model provides a thin-wall high-precision tapered roller bearing and relates to the technical field of roller bearings. An inner adhering wall is arranged on the annular side wall of the outer end of the inner ring; and a lower outer ring is rotationally mounted at the lower end of the inner ring outer end. The inner ring, the lower outer ring, the retainer and the upper outer ring which are assembled on the tapered roller bearing are tightly connected, and the bearing is provided with the oil inlet hole, so that lubricating oil can be injected into the bearing by using a needle tube, the lubricating oil can conveniently enter the bearing for lubrication, the lubricating oil can be injected without disassembling the bearing, the abrasion can be reduced when the tapered roller rotates, and the service life of the tapered roller bearing is prolonged. Therefore, the service life of the tapered roller bearing is prolonged, and the problems that parts on the bearing are tightly connected, the tapered roller is abraded when the bearing is used for a long time and needs to be lubricated, and if the bearing is detached and then lubricating oil is injected, time is wasted, working efficiency is reduced, and cost is reduced are solved. And the service life of the bearing can be shortened due to serious abrasion of the tapered roller.

Description

Technical Field

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

[0002] Thin-walled high-precision tapered roller bearings are widely used in the field of mechanical engineering. They are mainly composed of inner rings, outer rings, rollers and cages. As an important rotating component, tapered roller bearings play a supporting and transmission role in various mechanical equipment, so their quality and performance directly affect the operation effect of the entire mechanical equipment. Traditional tapered roller bearings are mainly made of steel, but with the improvement of product performance requirements, thin-walled high-precision tapered roller bearings have gradually become one of the mainstream products in the market. Its superior performance and functions have made it widely used in various high-demand mechanical equipment. Thin-walled high-precision tapered roller bearings are mainly used in occasions where the bearings are subjected to large radial and axial loads, and are particularly suitable for use under high-speed rotation and complex working conditions. Compared with traditional tapered roller bearings, thin-walled high-precision tapered roller bearings have smaller outer diameters and cross-sectional dimensions, lighter weight, higher load-bearing capacity, lower friction coefficient, higher speed, and longer life, which makes them have unique advantages in some applications under high-precision, high-speed and high-load conditions.

[0003] During the use of tapered roller bearings, the parts on the bearings are closely connected, and the tapered rollers of the bearings will wear out after long-term use, so they need to be lubricated. If the bearings are disassembled and then lubricating oil is injected, it will not only waste time but also reduce work efficiency. In addition, the severe wear of the tapered rollers will reduce the service life of the bearings. Utility Model Content

[0004] The disclosed embodiments relate to a thin-walled high-precision tapered roller bearing. The inner ring, lower outer ring, retaining frame and upper outer ring assembled on the tapered roller bearing are tightly connected, and an oil inlet hole is provided on the bearing. Lubricating oil can be injected into the bearing with a needle, which facilitates the lubricating oil to enter the bearing for lubrication. The bearing does not need to be disassembled to inject lubricating oil. The wear of the tapered roller is reduced when it rotates, thereby extending the service life of the tapered roller bearing. The thin-walled high-precision tapered roller bearing adopts a simple structural design, which makes installation and maintenance more convenient. This simple structural design is also conducive to reducing production costs.

[0005] In a first aspect of the present disclosure, a thin-walled high-precision tapered roller bearing is provided, specifically comprising: an inner ring; an inner wall is provided on the annular side wall of the outer end of the inner ring; a lower outer ring is rotatably mounted at the lower end of the outer end of the inner ring, and three through-holes are provided on the lower outer ring; a retaining frame is rotatably mounted at the upper end of the lower outer ring, and three through-holes are provided on the retaining frame; rotation grooves are provided at the edges of the upper and lower ends of the retaining frame respectively;

[0006] The retainer is provided with three through oil holes; the retainer is provided with through conical holes evenly, and through conical rollers are rotatably mounted in all the conical holes; an upper outer ring is rotatably mounted at the upper end of the retainer, and three through circular holes are provided on the upper outer ring, a plate notch is provided at the left end of the upper end of the upper outer ring, and two buffer holes are provided on the inner side wall of the plate notch;

[0007] Guide grooves are respectively provided on the inner side walls at both ends of the plate notch, a penetrating oil inlet hole is provided at the bottom of the plate notch, a sealing column is rotatably installed in the oil inlet hole, a sealing plug is fixedly installed at the lower end of the sealing column, a sealing plate is slidably installed at the plate notch, guide strips are respectively fixedly installed on the two side walls of the sealing plate, and symmetrical spring rods are fixedly installed on the rear side wall of the sealing plate.

[0008] In at least some embodiments, a lower swivel is fixedly mounted on the edge of the upper end of the lower outer ring, and roller small end grooves are evenly opened on the lower outer ring.

[0009] In at least some embodiments, an upper swivel is fixedly mounted on the edge of the lower end of the upper outer ring, roller large end grooves are evenly opened on the bottom of the upper outer ring, and penetrating fasteners are respectively inserted into the three circular holes of the upper outer ring.

[0010] The utility model provides a thin-walled high-precision tapered roller bearing, which has the following beneficial effects:

[0011] When the roller bearing of the utility model is in use, the inner ring, the lower outer ring, the retaining frame and the upper outer ring assembled on the tapered roller bearing are tightly connected, and an oil inlet hole is opened on the bearing, so lubricating oil can be injected into the bearing with a needle, which is convenient for the lubricating oil to enter the bearing for lubrication. The bearing does not need to be disassembled to inject lubricating oil, and the tapered roller will reduce wear when rotating, thereby extending the service life of the tapered roller bearing. The thin-walled high-precision tapered roller bearing adopts a simple structural design, which makes installation and maintenance more convenient. This simple structural design is also conducive to reducing production costs.

[0012] By rotating the sealing column to install it in the oil inlet hole, sealing the oil inlet hole with a sealing plug, and sealing the sealing column and the oil inlet hole with a sealing plate, foreign objects will not touch the sealing column, thereby effectively protecting the oil inlet hole. In this way, regular maintenance and injection of lubricating oil to the bearing can extend the service life of the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the drawings of the embodiment will be briefly introduced below.

[0014] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0015] In the attached picture:

[0016] Figure 1 The schematic diagram of the upper left front axial structure of the present application is shown;

[0017] Figure 2 A schematic diagram of the partially disassembled structure of the inner ring, lower outer ring and cage of the present application is shown;

[0018] Figure 3 A schematic diagram of a cross-sectional structure of a retainer and an upper outer ring of the present application is shown;

[0019] Figure 4 A schematic diagram of the explosion structure of the present application is shown.

[0020] Reference numerals list

[0021] 1. Inner ring; 101. Inner wall; 2. Lower outer ring; 201. Lower swivel; 202. Roller small end groove; 3. Cage; 301. Swivel groove; 302. Oil hole; 303. Tapered hole; 304. Tapered roller; 4. Upper outer ring; 401. Upper swivel; 402. Roller large end groove; 403. Fastener; 404. Plate notch; 405. Buffer hole; 406. Guide groove; 407. Oil inlet hole; 408. Sealing column; 409. Sealing plug; 410. Sealing plate; 411. Guide strip; 412. Spring rod. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example 1: Please refer to Figures 1 to 4 :

[0024] The utility model proposes a thin-walled high-precision tapered roller bearing, comprising: an inner ring 1; an inner wall 101 is provided on the annular side wall of the outer end of the inner ring 1; the inner end face of the tapered roller 304 is rollingly mounted on the inner wall 101, a lower outer ring 2 is rotatably mounted at the lower end of the outer end of the inner ring 1, and three penetrating circular holes are provided on the lower outer ring 2; a lower swivel 201 is fixedly mounted on the edge of the upper end of the lower outer ring 2, roller small end grooves 202 are uniformly provided on the lower outer ring 2, the lower ends of all tapered rollers 304 are rotatably mounted in the corresponding roller small end grooves 202, a retaining frame 3 is rotatably mounted at the upper end of the lower outer ring 2, and three penetrating circular holes are provided on the retaining frame 3; rotating grooves 301 are respectively provided at the edges of the upper and lower ends of the retaining frame 3; the lower swivel 201 is rotatably mounted on the upper In the end rotating groove 301, the upper rotating ring 401 is rotatably installed in the lower end rotating groove 301, and three penetrating oil holes 302 are opened on the retaining frame 3; the lubricating oil entering the roller bearing passes through the oil hole 302, which is convenient for the lubricating oil to wrap the tapered roller 304, so that the tapered roller 304 can rotate flexibly in the bearing, and penetrating tapered holes 303 are evenly opened on the retaining frame 3, and penetrating tapered rollers 304 are rotatably installed in all the tapered holes 303; the upper outer ring 4 is rotatably installed at the upper end of the retaining frame 3, and the upper outer ring 4 is provided with three penetrating circular holes. When the three circular holes on the lower outer ring 2, the retaining frame 3 and the upper outer ring 4 correspond to each other from top to bottom, a fastener 403 is used to penetrate here to fix the lower outer ring 2, the retaining frame 3 and the upper outer ring 4 together.

[0025] Among them, an upper rotating ring 401 is fixedly installed at the edge of the lower end of the upper outer ring 4, and roller large end grooves 402 are evenly opened at the bottom of the upper outer ring 4. The upper ends of all tapered rollers 304 are rotatably installed in the corresponding roller large end grooves 402. Penetrating fasteners 403 are respectively inserted in the three circular holes of the upper outer ring 4. A plate notch 404 is opened at the left end of the upper end of the upper outer ring 4, and two buffer holes 405 are opened on the inner side wall of the plate notch 404. Guide grooves 406 are respectively opened on the inner side walls at both ends of the plate notch 404. A penetrating fastener 403 is opened at the bottom of the plate notch 404. The oil inlet hole 407 is penetrated, and a sealing column 408 is rotatably installed in the oil inlet hole 407. The inner side wall of the oil inlet hole 407 is provided with a thread, and the annular side wall of the sealing column 408 is provided with a thread. A sealing plug 409 is fixedly installed at the lower end of the sealing column 408, and the sealing plug 409 is blocked in the oil inlet hole 407. A sealing plate 410 is slidably installed at the plate notch 404. When the roller bearing is ready to be filled with oil, the sealing plate 410 is pulled forward, and the rear end of the spring rod 412 will enter the buffer hole 405, and the upper end of the sealing column 408 will be exposed, and then the sealing The sealing column 408 is rotated and removed, and the lubricating oil is then injected into the roller bearing from the oil inlet hole 407. Finally, the sealing column 408 is rotated and installed in the oil inlet hole 407, and the oil inlet hole 407 is sealed with a sealing plug 409, so that the lubricating oil in the roller bearing will not flow out. After the sealing plate 410 is loosened, the spring on the spring rod 412 will push the sealing plate 410 backward, and the sealing column 408 and the oil inlet hole 407 are sealed with the sealing plate 410, so that foreign objects will not touch the sealing column 408, thereby protecting the oil inlet hole 407 and sealing it. Guide strips 411 are fixedly installed on both side walls of the plate 410, and the guide strips 411 are slidably installed in the guide grooves 406. When the sealing plate 410 slides back and forth, the guide strips 411 are restricted by the guide grooves 406, and the sealing plate 410 can only slide back and forth, preventing the sealing plate 410 from deviating or tilting when sliding back and forth, and the sealing plate 410 cannot smoothly seal the oil inlet hole 407. Symmetrical spring rods 412 are fixedly installed on the rear side wall of the sealing plate 410, and the rear ends of the two spring rods 412 are respectively inserted in the two buffer holes 405.

[0026] Embodiment 2, based on embodiment 1, as Figure 1 and Figure 4As shown, the lower outer ring 2 is rotatably mounted at the lower end of the outer end of the inner ring 1, and the lower outer ring 2 is provided with three penetrating circular holes, the retaining frame 3 is rotatably mounted at the upper end of the lower outer ring 2, and the retaining frame 3 is provided with three penetrating circular holes, the upper outer ring 4 is rotatably mounted at the upper end of the retaining frame 3, and the upper outer ring 4 is provided with three penetrating circular holes, the three circular holes on the lower outer ring 2, the retaining frame 3 and the upper outer ring 4 are all deleted, and then the fastener 403 is deleted, and after the lower outer ring 2, the retaining frame 3 and the upper outer ring 4 are combined with the inner ring 1, the lower outer ring 2, the retaining frame 3 and the upper outer ring 4 are fixed and welded together, so that the lower outer ring 2, the retaining frame 3 and the upper outer ring 4 will not be separated during use, thereby avoiding the problem of fastener 403 loosening during long-term use, and also saving parts costs.

[0027] Working principle of this embodiment: When in use, when the three circular holes on the lower outer ring 2, the retainer 3 and the upper outer ring 4 correspond to each other, the fastener 403 is passed through here to fix the lower outer ring 2, the retainer 3 and the upper outer ring 4 together, and the inner end surface of the tapered roller 304 is rolled and installed on the inner wall 101. When the roller bearing is ready to be oiled, the sealing plate 410 is pulled forward, and the rear end of the spring rod 412 will enter the buffer hole 405, and the upper end of the sealing column 408 will be exposed, and then the sealing column 408 is rotated and removed, and then the lubricating oil is injected into the roller bearing from the oil inlet hole 407 and enters the roller bearing. The lubricating oil passes through the oil hole 302, so that the lubricating oil can wrap the tapered roller 304, allowing the tapered roller 304 to rotate flexibly in the bearing. Finally, the sealing column 408 is rotatably installed in the oil inlet hole 407, and the oil inlet hole 407 is sealed with a sealing plug 409, so that the lubricating oil in the roller bearing will not flow out. After loosening the sealing plate 410, the spring on the spring rod 412 will push the sealing plate 410 backward, and the sealing column 408 and the oil inlet hole 407 are sealed with the sealing plate 410, so that foreign objects will not touch the sealing column 408, thereby protecting the oil inlet hole 407.

[0028] In this article, there are a few points to note:

[0029] 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.

[0030] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.

[0031] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. Thin-walled high-precision tapered roller bearings, including: Inner ring (1); an inner wall (101) is provided on the annular side wall of the outer end of the inner ring (1); a lower outer ring (2) is rotatably mounted at the lower end of the outer end of the inner ring (1), and the lower outer ring (2) is provided with three through-holes; it is characterized in that a retaining frame (3) is rotatably mounted at the upper end of the lower outer ring (2), and the retaining frame (3) is provided with three through-holes; rotation grooves (301) are respectively provided at the edges of the upper and lower ends of the retaining frame (3); the retaining frame (3) is provided with three through-holes for oiling; the retaining frame (3) is evenly provided with through-conical holes (303), and through-conical rollers (304) are rotatably mounted in all the conical holes (303); an upper outer ring (4) is rotatably mounted at the upper end of the retaining frame (3), and the upper outer ring (4) is provided with three through-holes.

2. The thin-walled high-precision tapered roller bearing according to claim 1, characterized in that: A lower swivel ring (201) is fixedly mounted on the edge of the upper end of the lower outer ring (2), and roller small end grooves (202) are evenly formed on the lower outer ring (2).

3. The thin-walled high-precision tapered roller bearing according to claim 1, characterized in that: An upper rotating ring (401) is fixedly mounted on the edge of the lower end of the upper outer ring (4), roller large end grooves (402) are evenly arranged on the bottom of the upper outer ring (4), and penetrating fasteners (403) are respectively inserted into the three circular holes of the upper outer ring (4).

4. The thin-walled high-precision tapered roller bearing according to claim 1, characterized in that: A plate notch (404) is provided at the left end of the upper end of the upper outer ring (4), two buffer holes (405) are provided on the inner side wall of the plate notch (404), and guide grooves (406) are provided on the inner side walls at both ends of the plate notch (404).

5. The thin-walled high-precision tapered roller bearing according to claim 4, characterized in that: A penetrating oil inlet hole (407) is provided at the bottom of the plate notch (404), and a sealing column (408) is rotatably installed in the oil inlet hole (407).

6. The thin-walled high-precision tapered roller bearing according to claim 5, characterized in that: A sealing plug (409) is fixedly mounted at the lower end of the sealing column (408), and a sealing plate (410) is slidably mounted at the plate notch (404).

7. The thin-walled high-precision tapered roller bearing according to claim 6, characterized in that: Guide strips (411) are fixedly mounted on both side walls of the sealing plate (410), and mutually symmetrical spring rods (412) are fixedly mounted on the rear side wall of the sealing plate (410).

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