Fully-sealed double-row tapered roller bearing

Abstract

The utility model relates to the technical field of roller bearings, and discloses a fully-sealed double-row tapered roller bearing, which comprises an outer ring and two inner rings assembled together, a retainer is sleeved outside the inner rings, rollers are rotatably arranged on the surface of the retainer, the rollers are arranged between the outer ring and the inner rings, and the outer ring and the inner rings are arranged in parallel. A lubricating oil storage cavity is formed in the outer ring, a plurality of oil outlet holes communicated with the lubricating oil storage cavity are formed in the inner wall of the outer ring, so that lubricating oil in the lubricating oil storage cavity enters the surface of the roller through the oil outlet holes, and sealing discs are arranged at the two ends of the outer ring; according to the double-row tapered roller bearing, the two ends of the double-row tapered roller bearing can be sealed through the arranged sealing discs, impurities or dust are prevented from entering the double-row tapered roller bearing, the lubricating oil storage cavity is formed in the outer ring and used for storing lubricating oil, the lubricating oil in the lubricating oil storage cavity can seep out through the tiny oil outlet holes, and the service life of the double-row tapered roller bearing is prolonged. And lubricating oil is added to the internal rollers.

Description

Technical Field

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

[0002] Tapered roller bearings are a type of bearing with truncated cone-shaped rollers. They are divided into a large end and a small end according to the size of the two bottom surfaces of the rollers. Tapered roller bearings are also provided with a cage for separating and guiding the rollers. Double-row tapered roller bearings are assembled from two sets of tapered rollers.

[0003] After searching, a new type of double-row tapered roller bearing disclosed in application number 202223327736.9 belongs to the technical field of tapered roller bearings, and includes an outer ring, a frame is sleeved inside the outer ring, an inner ring is sleeved inside the frame, a sealing plate is clamped on the frame, a sleeve is fixedly connected inside the frame, a roller is clamped inside the frame, a positioning hole is opened on the roller, and the positioning column is clamped in the positioning hole. The new double-row tapered roller bearing is provided with a sleeve, a positioning hole, a positioning column, a fixed plate and a spring. The double-row tapered roller bearing cooperates with the positioning column, the fixed plate and the spring, so that the frame effectively positions the roller, avoids the possibility of shaking of the roller during operation, and prevents friction between the roller and the double-row tapered roller bearing, which not only improves the stability between the double-row tapered roller bearing and the roller, but also ensures the service life of the double-row tapered roller bearing;

[0004] However, the above method still has the following defects in actual use: a sealing plate is provided to seal the end of the tapered roller bearing to prevent the entry of dust or impurities, but the rollers of the tapered roller bearing need to be lubricated for maintenance after long-term use, and the sealing plate provided makes it inconvenient to maintain the rollers inside, and the operation is not convenient. Utility Model Content

[0005] The utility model aims to provide a fully sealed double-row tapered roller bearing, which has the effects of sealing the end and facilitating the addition of lubricating oil.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions: a fully sealed double-row tapered roller bearing, comprising an outer ring and two inner rings assembled together, the outer sleeve of the inner ring is provided with a retaining frame, the surface of the retaining frame is rotatably provided with rollers, and the rollers are arranged between the outer ring and the inner ring, the interior of the outer ring is provided with a lubricating oil storage cavity, the inner wall of the outer ring is provided with a plurality of oil outlet holes communicated with the lubricating oil storage cavity, so that the lubricating oil inside the lubricating oil storage cavity enters the surface of the roller through the oil outlet holes, both ends of the outer ring are provided with sealing disks, and the surface of the sealing disk is provided with an oil filling hole communicated with the lubricating oil storage cavity.

[0007] The utility model is further configured as follows: a limit plate is provided at one end of the two inner rings close to each other, and the two limit plates are snap-fitted and connected.

[0008] The utility model is further configured as follows: a clamping slot is provided on one side of one of the limit plates, and a clamping block is provided on one side of the other limit plate to be clamped and connected with the clamping slot.

[0009] The utility model is further configured as follows: two ends of the outer ring are provided with accommodating grooves, and the inner side of the sealing disk is provided with sealing gaskets corresponding to the accommodating grooves.

[0010] The utility model is further configured as follows: an axial hole is provided in the middle of the sealing disk, and a sealing ring is provided inside the axial hole.

[0011] The utility model is further configured as follows: a sealing groove is provided on one side of the oil filling hole, a sealing plate is clamped inside the sealing groove, and the sealing plate is connected to the sealing groove by fixing screws.

[0012] The utility model is further configured as follows: a plurality of mounting grooves are provided on the surface of the retaining frame, the rollers are rotatably arranged inside the mounting grooves, and the rollers are fitted with the inner wall of the outer ring and the outer wall of the inner ring.

[0013] In summary, the utility model has the following beneficial effects: the utility model can seal the two ends of the double-row tapered roller bearing through the sealing disk to prevent the entry of impurities or dust, and a lubricating oil storage chamber is provided inside the outer ring for storing lubricating oil, so that the lubricating oil inside can seep out through a plurality of tiny oil outlet holes to add lubricating oil to the internal rollers, and at the same time, an oil filling hole is provided on the surface of the sealing disk to facilitate the addition of lubricating oil to the inside of the lubricating oil storage chamber, without the need to completely disassemble the sealing disk, thereby further playing a protective role. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0015] Figure 2This is a schematic diagram of the structure of the utility model after the sealing disk is opened;

[0016] Figure 3 This is one of the explosion structure schematic diagrams of the utility model;

[0017] Figure 4 This is the second schematic diagram of the explosion structure of the utility model;

[0018] Figure 5 The utility model is a schematic diagram of the structure after the sealing plate on the sealing disk is disassembled.

[0019] In the figure: 1, outer ring; 101, lubricating oil storage chamber; 102, oil outlet hole; 2, inner ring; 201, limit plate; 202, slot; 203, block; 3, retaining frame; 301, roller; 4, sealing plate; 401, sealing gasket; 402, sealing ring; 403, oil filling hole; 404, sealing groove; 405, sealing plate. DETAILED DESCRIPTION

[0020] The present invention will be further described below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] See also Figures 1 to 5 In an embodiment of the utility model, a fully sealed double-row tapered roller bearing comprises an outer ring 1 and two inner rings 2 assembled together, a limiting plate 201 is provided at one end of the two inner rings 2 close to each other, and the two limiting plates 201 are snap-fitted and connected so that the two inner rings 2 can be connected together, one side of one limiting plate 201 is provided with a card slot 202, and one side of the other limiting plate 201 is provided with a card block 203 snap-fitted and connected with the card slot 202, and the two inner rings 2 are easily assembled through the cooperation between the card block 203 and the card slot 202, the outer sleeve of the inner ring 2 is provided with a retaining frame 3, the surface of the retaining frame 3 is rotatably provided with a roller 301, and the roller 301 is arranged between the outer ring 1 and the inner ring 2, and the inner The outer ring 1 is provided with a lubricating oil storage chamber 101, and the inner wall of the outer ring 1 is provided with a plurality of oil outlet holes 102 which are communicated with the lubricating oil storage chamber 101. The lubricating oil in the lubricating oil storage chamber 101 is seeped out through the tiny oil outlet holes 102 to lubricate the roller 301, so that the lubricating oil inside the lubricating oil storage chamber 101 enters the surface of the roller 301 through the oil outlet holes 102. Both ends of the outer ring 1 are provided with sealing disks 4, and the sealing disks 4 are connected to the two ends of the outer ring 1 by fixing screws, so as to facilitate the disassembly and assembly of the sealing disks 4. The surface of the sealing disks 4 is provided with oil filling holes 403 which are communicated with the lubricating oil storage chamber 101, and the lubricating oil can be added to the inside of the lubricating oil storage chamber 101 through the oil filling holes 403 without removing the sealing disks 4.

[0022] In this embodiment, preferably, both ends of the outer ring 1 are provided with receiving grooves, and the inner side of the sealing disc 4 is provided with sealing gaskets 401 that correspond to the receiving grooves. The sealing disc 4 is installed to both ends of the outer ring 1 so that the sealing gaskets 401 on the inner side of the sealing disc 4 correspond to the receiving grooves at both ends of the outer ring 1, thereby sealing the ends of the outer ring 1 to prevent dust or impurities from entering between the outer ring 1 and the inner ring 2 and causing damage to the roller 301.

[0023] In this embodiment, preferably, a shaft hole is provided in the middle of the sealing disk 4, and a sealing ring 402 is provided inside the shaft hole so as not to interfere with the installation of the shaft body;

[0024] In this embodiment, preferably, a sealing groove 404 is provided on one side of the oil filling hole 403, and a sealing plate 405 is clamped inside the sealing groove 404. The sealing plate 405 is clamped into the inside of the sealing groove 404 to seal the surface of the oil filling hole 403, and the sealing plate 405 is connected to the sealing groove 404 by fixing screws, so as to facilitate the position of the sealing plate 405 to be limited;

[0025] In this embodiment, preferably, a plurality of mounting grooves are provided on the surface of the retaining frame 3, and the roller 301 is rotatably arranged inside the mounting groove, and the roller 301 is in contact with the inner wall of the outer ring 1 and the outer wall of the inner ring 2, which guides and limits the rotation of the roller 301.

[0026] When in use, firstly, the sealing disc 4 is installed to the two ends of the outer ring 1 by fixing screws, so that the sealing gasket 401 inside the sealing disc 4 corresponds to the receiving grooves at the two ends of the outer ring 1, thereby sealing the ends of the outer ring 1 to prevent dust or impurities from entering between the outer ring 1 and the inner ring 2 and causing damage to the roller 301, and then the sealing plate 405 on the sealing disc 4 is removed, and a certain amount of lubricating oil is added to the inside of the lubricating oil storage chamber 101 through the oil filling hole 403. After the addition is completed, the sealing plate 405 is inserted into the inside of the sealing groove 404 and connected by fixing screws to seal the oil filling hole 403;

[0027] When the double-row tapered roller bearing is working normally, the lubricating oil in the lubricating oil storage chamber 101 seeps out through the tiny oil outlet holes 102 arranged on the inner wall of the outer ring 1, and enters the roller 301 between the inner ring 2 and the outer ring 1, thereby lubricating the roller 301, preventing the roller 301 from rusting and causing damage, and improving the service life. It is only necessary to regularly remove the sealing plate 405 to add lubricating oil without removing the sealing plate 4 entirely.

[0028] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A fully sealed double row tapered roller bearing, comprising an outer ring (1) and two inner rings (2) assembled together, wherein a retaining frame (3) is provided on the outer surface of the inner ring (2), a roller (301) is rotatably provided on the surface of the retaining frame (3), and the roller (301) is arranged between the outer ring (1) and the inner ring (2), characterized in that: The outer ring (1) is provided with a lubricating oil storage cavity (101) inside, and the inner wall of the outer ring (1) is provided with a plurality of oil outlet holes (102) communicating with the lubricating oil storage cavity (101), so that the lubricating oil inside the lubricating oil storage cavity (101) enters the surface of the roller (301) through the oil outlet holes (102), and sealing disks (4) are provided at both ends of the outer ring (1), and the surface of the sealing disk (4) is provided with an oil injection hole (403) communicating with the lubricating oil storage cavity (101).

2. The fully sealed double row tapered roller bearing according to claim 1, characterized in that: A limiting disk (201) is provided at one end of the two inner rings (2) that are close to each other, and the two limiting disks (201) are snap-fitted and connected.

3. The fully sealed double row tapered roller bearing according to claim 2, characterized in that: One side of one of the limiting plates (201) is provided with a slot (202), and one side of the other limiting plate (201) is provided with a block (203) that is engaged with the slot (202).

4. The fully sealed double row tapered roller bearing according to claim 1, characterized in that: The two ends of the outer ring (1) are provided with receiving grooves, and the inner side of the sealing disk (4) is provided with sealing gaskets (401) corresponding to the receiving grooves.

5. The fully sealed double row tapered roller bearing according to claim 1, characterized in that: An axial hole is provided in the middle of the sealing disk (4), and a sealing ring (402) is provided inside the axial hole.

6. The fully sealed double row tapered roller bearing according to claim 1, characterized in that: A sealing groove (404) is provided on one side of the oil filling hole (403), a sealing plate (405) is clamped inside the sealing groove (404), and the sealing plate (405) is connected to the sealing groove (404) via fixing screws.

7. The fully sealed double row tapered roller bearing according to claim 1, characterized in that: The surface of the retaining frame (3) is provided with a plurality of mounting grooves, the roller (301) is rotatably arranged inside the mounting grooves, and the roller (301) is in contact with the inner wall of the outer ring (1) and the outer wall of the inner ring (2).

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