Dustproof double-row bearing

Abstract

The utility model discloses a dustproof double-row bearing which comprises an inner ring, an outer ring, two rows of rolling bodies and a retainer, the two rows of rolling bodies and the retainer are positioned between the inner ring and the outer ring, and an oil injection port is formed in the inner ring; the dustproof device comprises a second sealing ring arranged on the outer wall of the inner ring, a first sealing ring arranged on the inner wall of the outer ring and tightly attached to the second sealing ring, a first sealing rubber ring installed on the inner wall of the oil filling port, a protective cover arranged on the inner wall of the first sealing rubber ring and a protective plug detachably connected with the protective cover; the insertion cylinder is arranged on the protective plug and can be inserted into the protective cover; the dustproof bearing has the beneficial effects that through the designed dustproof device, external dust and impurities are prevented from entering the bearing by utilizing the attachment of the second sealing ring and the first sealing ring; and the oil injection port can be blocked, external dust and impurities are further prevented from entering the bearing, bearing abrasion is reduced, the service life of the bearing is prolonged, and the working stability of the bearing is improved.

Description

Technical Field

[0001] This utility model belongs to the field of bearing technology, specifically relating to a dustproof double-row bearing. Background Technology

[0002] Double row bearings are widely used in industrial production and can withstand large radial and axial loads. However, in actual use, external dust and impurities can easily enter the bearing, leading to accelerated wear and reduced service life and performance. Existing double row bearing oil filling holes usually lack effective protection, and even without lubrication, dust and impurities can easily enter the bearing through the oil filling holes, further affecting the normal operation of the bearing. Utility Model Content

[0003] The purpose of this invention is to provide a dustproof double-row bearing that increases dustproof performance and extends the bearing's service life.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a dustproof double-row bearing, comprising an inner ring, an outer ring, two rows of rolling elements located between the inner ring and the outer ring, and a cage, wherein an oil filling port is provided on the inner ring; and further comprising a dustproof device, the dustproof device comprising a second sealing ring disposed on the outer wall of the inner ring, a first sealing ring disposed on the inner wall of the outer ring and tightly fitted with the second sealing ring, a first sealing rubber ring installed on the inner wall of the oil filling port, a protective cover disposed on the inner wall of the first sealing rubber ring, and a protective plug detachably connected to the protective cover.

[0005] Preferably, it also includes a plug disposed on the protective plug, and the plug can be inserted into the interior of the protective cover.

[0006] Preferably, the outer wall of the insert is provided with a third sealing ring, and the third sealing ring and the inner wall of the protective cover are tightly fitted together.

[0007] Preferably, it also includes inserts symmetrically arranged on the protective plug, and slots opened on the protective cover for inserts to be inserted.

[0008] Preferably, the inner side of the slot is provided with a first stop and a second stop symmetrically distributed, and both the first stop and the second stop can abut against the side surface of the insert.

[0009] Preferably, the first stop is a cuboid structure, and one end of the second stop is inclined.

[0010] Preferably, it also includes a groove formed on the protective plug and a pull rod disposed on the inner side of the groove.

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

[0012] The designed dustproof device, through the fit of the second and first sealing rings, prevents external dust and impurities from entering the bearing; it can also seal the oil filling port, further preventing external dust and impurities from entering the bearing, reducing bearing wear, and improving the bearing's service life and operational stability. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0015] Figure 3 For the present utility model Figure 2 A schematic diagram of the enlarged structure of region E in the diagram;

[0016] Figure 4 For the present utility model Figure 3 A schematic diagram of the enlarged structure of region F in the diagram;

[0017] In the diagram: 1. Inner ring; 11. Oil inlet; 2. Outer ring; 3. First sealing ring; 4. Second sealing ring; 5. Rolling element; 6. Protective cover; 61. First sealing ring; 62. Slot; 620. First stop block; 621. Second stop block; 7. Protective plug; 71. Insert; 710. Third sealing ring; 72. Groove; 720. Pull rod; 73. Insert block. Detailed Implementation

[0018] 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.

[0019] Example 1

[0020] Please see Figures 1-3This is the first embodiment of the present invention, which provides a dustproof double-row bearing, including an inner ring 1, an outer ring 2, two rows of rolling elements 5 located between the inner ring 1 and the outer ring 2, and a cage. The assembly consisting of the inner ring 1, the rolling elements 5, and the cage is installed inside the outer ring 2, allowing the rolling elements 5 to roll freely under the guidance of the cage. An oil inlet 11 is provided on the inner ring 1, through which lubricating oil is added to increase lubrication performance. It also includes a dustproof device, which includes a second sealing ring 4 disposed on the outer wall of the inner ring 1, thus adding the second sealing ring 4. The first sealing ring 3, which is tightly fitted to the inner wall of the second sealing ring 4, prevents external dust and impurities from entering the bearing by utilizing the fit between the second sealing ring 4 and the first sealing ring 3. The first sealing rubber ring 61 installed on the inner wall of the oil filling port 11 adds the first sealing rubber ring 61. The protective cover 6 set on the inner wall of the first sealing rubber ring 61 adds the protective cover 6. The protective plug 7, which is detachably connected to the protective cover 6, can seal the oil filling port 11, further preventing external dust and impurities from entering the bearing, reducing bearing wear, and improving the bearing's service life and operational stability.

[0021] In this embodiment, preferably, a plug 71 is also provided on the protective plug 7, which realizes the addition of the plug 71. The plug 71 can be inserted into the interior of the protective cover 6. A third sealing ring 710 is provided on the outer wall of the plug 71, which realizes the addition of the third sealing ring 710. The third sealing ring 710 and the inner wall of the protective cover 6 are tightly fitted, which increases the performance of the protective plug 7 in sealing the oil inlet 11.

[0022] In this embodiment, preferably, it also includes insert blocks 73 symmetrically arranged on the protective plug 7, thereby realizing the addition of insert blocks 73. A slot 62 is opened on the protective cover 6 for insert blocks 73 to be inserted. When the protective plug 7 and the protective cover 6 are spliced, the insert blocks 73 are inserted into the inside of the slot 62.

[0023] Example 2

[0024] Please see Figures 1-4 This is the second embodiment of the present invention, which is based on the previous embodiment, but differs in that:

[0025] The inner side of the slot 62 is provided with symmetrically distributed first stop blocks 620 and second stop blocks 621, which realizes the addition of first stop blocks 620 and second stop blocks 621. Both first stop blocks 620 and second stop blocks 621 can abut against the side surface of the insert block 73. The insert block 73 is inserted into the slot 62. The abutment between the first stop blocks 620 and second stop blocks 621 and the insert block 73 reinforces the spliced ​​protective plug 7 and protective cover 6. The first stop block 620 has a cuboid structure, and one end of the second stop block 621 is inclined, which increases the efficiency of inserting the insert block 73 into the slot 62. It also includes a groove 72 opened on the protective plug 7, which realizes the opening of the groove 72. A pull rod 720 is provided on the inner side of the groove 72. The protective plug 7 can be removed by pulling rod 720 for easy lubrication.

[0026] The working principle and usage process of this utility model are as follows: During normal operation, the first sealing ring 3 and the second sealing ring 4 continuously play a dustproof role, preventing external dust and impurities from entering the bearing. At the same time, the first sealing ring 61, the protective cover 6, and the protective plug 7 at the oil filling port 11 are in a closed state. The insert 71 on the protective plug 7 is inserted into the protective cover 6. The third sealing ring 710 on the outer wall of the insert 71 is tightly fitted with the inner wall of the protective cover 6. The insert 73 on the protective plug 7 is inserted into the slot 62 of the protective cover 6. The first stop 620 and the second stop 621 on the inner side of the slot 62 abut against the insert 73, reinforcing the protective plug 7 and the protective cover 6, effectively preventing dust and impurities from entering the bearing through the oil filling port 11, and ensuring the stable operation of the bearing.

[0027] When the bearing needs to be lubricated, the protective plug 7 is removed from the protective cover 6 by pulling the lever 720 on the inner side of the groove 72 on the protective plug 7; at this time, the oil filling port 11 is opened, the oil filling nozzle of the oil filling device is aligned with the oil filling port 11, and lubricating oil is added through the oil filling port 11 to improve the lubrication performance of the bearing.

[0028] After the oil filling is completed, insert the plug 71 of the protective plug 7 back into the protective cover 6, so that the third sealing ring 710 on the outer wall of the plug 71 fits tightly against the inner wall of the protective cover 6. At the same time, insert the plug 73 on the protective plug 7 into the slot 62 of the protective cover 6. The first stop 620 and the second stop 621 on the inner side of the slot 62 and the plug 73 are used to reinforce the spliced ​​protective plug 7 and the protective cover 6, and reseal the oil filling port 11 to restore the dust protection state of the bearing, ensuring that the bearing is not disturbed by dust and impurities in subsequent operation and continues to work stably.

[0029] Although embodiments of the present invention have been shown and described in detail above, 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 dustproof double-row bearing, characterized in that: It includes an inner ring (1), an outer ring (2), two rows of rolling elements (5) located between the inner ring (1) and the outer ring (2) and a cage. The inner ring (1) is provided with an oil filling port (11). It also includes a dustproof device, which includes a second sealing ring (4) disposed on the outer wall of the inner ring (1), a first sealing ring (3) disposed on the inner wall of the outer ring (2) and tightly fitted with the second sealing ring (4), a first sealing rubber ring (61) installed on the inner wall of the oil filling port (11), a protective cover (6) disposed on the inner wall of the first sealing rubber ring (61), and a protective plug (7) detachably connected to the protective cover (6).

2. The dustproof double-row bearing according to claim 1, characterized in that: It also includes a plug (71) disposed on the protective plug (7), and the plug (71) can be inserted into the interior of the protective cover (6).

3. A dustproof double-row bearing according to claim 2, characterized in that: The outer wall of the insert (71) is provided with a third sealing ring (710), and the third sealing ring (710) and the inner wall of the protective cover (6) are tightly fitted together.

4. A dustproof double-row bearing according to claim 1, characterized in that: It also includes inserts (73) symmetrically arranged on the protective plug (7) and slots (62) opened on the protective cover (6) for inserts (73) to be inserted.

5. A dustproof double-row bearing according to claim 4, characterized in that: The inner side of the slot (62) is provided with a first stop (620) and a second stop (621) symmetrically distributed, and both the first stop (620) and the second stop (621) can abut against the side surface of the insert (73).

6. A dustproof double-row bearing according to claim 5, characterized in that: The first stop (620) is a cuboid structure, and one end of the second stop (621) is inclined.

7. A dustproof double-row bearing according to claim 1, characterized in that: It also includes a groove (72) opened on the protective plug (7) and a pull rod (720) set on the inner side of the groove (72).

Images