High-temperature bearing with long service life

Abstract

The utility model provides a high-temperature long-life bearing which comprises an outer ring and an inner ring, the inner ring comprises a first inner ring and a second inner ring, a first ball group is arranged between the outer ring and the first inner ring, a second ball group is arranged between the outer ring and the second inner ring, the first inner ring and the second inner ring are symmetrically arranged, and the first ball group and the second ball group are symmetrically arranged. A first grease storage cavity is further formed between the first ball group and the second ball group, lubricating grease is arranged in the first grease storage cavity, the first ball group and the second ball group are symmetrically arranged, the number of the balls is increased, and the stress area of the balls is increased, so that the bearing capacity of the bearing is improved, and the purpose of improving the durability of the bearing is achieved; and by arranging the first grease storage cavity, friction of the bearing is reduced through lubricating grease, heat generated by friction is reduced, and meanwhile it is guaranteed that the lubricating function is still guaranteed in the high-temperature state.

Description

Technical Field

[0001] The utility model relates to a bearing, and particularly to a high-temperature and high-life bearing. Background Art

[0002] Currently, a Chinese patent with the publication number CN216278989U discloses a high-temperature resistant bearing, which includes an outer ring and an inner ring. A plurality of balls are arranged between the outer ring and the inner ring, and a plurality of heat dissipation holes are arranged on the outer ring to dissipate the heat accumulated inside the bearing through the heat dissipation holes.

[0003] The above patent still has deficiencies. Usually, the high temperature generated inside the bearing is due to the friction generated by the rapid rotation between the outer ring and the inner ring, thus generating heat. Although the friction is greatly reduced by the balls, the balls will still wear when the bearing is used for a long time, resulting in an increase in friction. Although the above bearing dissipates heat through the heat dissipation holes, it cannot reduce the friction and wear of the balls, thereby reducing the generation of heat, which will lead to a decrease in the durability of the bearing. Summary of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide a high-temperature and high-life bearing, which increases the durability of the bearing while being resistant to high temperatures.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a high-temperature and high-life bearing, including an outer ring and an inner ring. The inner ring includes an inner ring one and an inner ring two. A first ball group is arranged between the outer ring and the inner ring one, and a second ball group is arranged between the outer ring and the inner ring two. The inner ring one and the inner ring two are symmetrically arranged, the first ball group and the second ball group are symmetrically arranged, and a first grease storage cavity is further arranged between the first ball group and the second ball group, and grease is arranged in the first grease storage cavity.

[0006] By the above technical means, by arranging the first ball group and the second ball group, the balls are symmetrically arranged, the number of balls is increased, and the force-bearing area of the balls is increased, thereby increasing the bearing capacity of the bearing to achieve the purpose of increasing the durability of the bearing and reducing the influence of thermal deformation on the bearing. By arranging the first grease storage cavity, the friction of the bearing is reduced by the grease, the heat generated by the friction is reduced, and at the same time, the lubrication function is still ensured under high-temperature conditions.

[0007] Preferably, the structure of the inner ring one is the same as that of the inner ring two, and an arc-shaped installation groove one is arranged inside it. A pair of arc-shaped installation grooves two are symmetrically arranged on the outer ring. The first ball group and the second ball group are both arranged in the corresponding arc-shaped installation groove one and arc-shaped installation groove two.

[0008] By the above technical means, through the cooperation of the arc-shaped installation groove one and the arc-shaped installation groove two, the first ball group and the second ball group are clamped, ensuring the contact between the balls and the outer ring and the inner ring.

[0009] Preferably, the first ball group and the second ball group have the same structure, including a cage and a number of balls. The cage is provided with mounting grooves equal in number to the balls, and the cage is tapered.

[0010] By the above technical means, by providing a cage, the positions of the balls are ensured not to change. By making the cage tapered, the cage can press the balls against the inner ring, and at the same time, prevent too much grease from leaking through the gaps, increasing the durability of the bearing.

[0011] Preferably, a grease injection hole is also provided on the outer ring. The grease injection hole communicates with the first grease storage cavity. A plug is also provided in the grease injection hole, and the plug is in threaded fit with the grease injection hole.

[0012] By the above technical means, the grease in the first grease storage cavity can be repeatedly replenished through the grease injection hole, thereby further increasing the durability of the bearing. The plug prevents the grease from leaking through the grease injection hole.

[0013] Preferably, a counterbore is provided on the first inner ring, and a threaded hole is provided on the first inner ring. Screws are installed in the counterbore and the threaded hole, and the first inner ring and the second inner ring are fixed to the outer ring by the screws.

[0014] By the above technical means, by providing a counterbore and a threaded hole and connecting them with screws, the first inner ring and the second inner ring are clamped on the outer ring. At the same time, the bearing is radiated to a certain extent through the first counterbore and the second threaded hole.

[0015] Preferably, mounting grooves are provided on the outer sides of the first inner ring and the second inner ring, and mounting grooves are provided on both sides of the outer ring. Sealing rings are provided in the mounting grooves.

[0016] By the above technical means, by providing the mounting grooves, the sealing rings are installed on the outer ring, and the inside of the bearing is sealed to a certain extent, reducing the dust entering the inside of the bearing.

[0017] Preferably, the mounting groove forms an inverted hook groove. The sealing ring is made of fluororubber and is snapped into the inverted hook groove. A second grease storage cavity is formed between the sealing ring and the first ball group and the second ball group.

[0018] By the above technical means, the sealing ring can be directly snapped onto the outer ring through the inverted hook groove. By providing the second grease storage cavity, the grease is more uniform, increasing the lubrication effect, and at the same time further reducing the contact between dust and the balls. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of the embodiment;

[0020] Figure 2 Cross-sectional schematic diagram of the embodiment;

[0021] Figure 3 is Figure 2 Schematic diagram of part A of

[0022] Figure 4 Schematic diagram of the structure of ball group 1.

[0023] Reference numerals: 1, outer ring; 2, inner ring; 3, inner ring 1; 4, inner ring 2; 5, ball group 1; 6, ball group 2; 7, first grease storage cavity; 9, cage; 10, ball; 11, mounting groove; 12, arc-shaped mounting groove 1; 13, arc-shaped mounting groove 2; 14, grease injection hole; 15, plug; 16, counterbore; 17, threaded hole; 18, screw; 19, mounting groove 1; 20, mounting groove 2; 21, sealing ring; 22, barb groove; 23, steel sheet skeleton; 24, second grease storage cavity. Specific embodiments

[0024] The following further details the specific embodiments of the present invention in conjunction with the accompanying drawings, so that the technical solutions of the present invention are easier to understand and master.

[0025] A high-temperature and high-life bearing includes an outer ring 1 and an inner ring 2. The inner ring 2 is composed of an inner ring 1 3 and an inner ring 2 4. A ball group 1 5 is arranged between the outer ring 1 and the inner ring 1 3, and a ball group 2 6 is arranged between the outer ring 1 and the inner ring 2 4. The inner ring 1 3 and the inner ring 2 4 are symmetrically arranged, and the ball group 1 5 and the ball group 2 6 are also symmetrically arranged at corresponding positions. A first grease storage cavity 7 is also arranged between the ball group 1 5 and the ball group 2 6. Grease is arranged in the first grease storage cavity 7. By arranging the first grease storage cavity 7, the friction of the bearing is reduced through the grease, the heat generated by the friction is reduced, and at the same time, the lubrication function is ensured even at high temperatures.

[0026] The structure of ball group one 5 and ball group two 6 is the same, including a cage 9 and several balls 10. The cage 9 is provided with mounting grooves 11 having the same number as the balls 10. The structure of inner ring one 3 is the same as that of inner ring two 4, and an arc-shaped mounting groove 11 one is arranged inside it. A pair of arc-shaped mounting grooves 11 two are symmetrically arranged inside outer ring 1. The upper side of the ball 10 is stuck on the arc-shaped mounting groove 11 two, and the lower side of the ball 10 is stuck on the arc-shaped mounting groove 11 one. The cage 9 is arranged in a conical shape, and the inner diameter of the cage 9 is larger than the outer diameter. During installation, the inner side of the cage 9 abuts against the side end of the arc-shaped mounting groove 11 two, and the outer side of the cage 9 abuts against the side end of the arc-shaped mounting groove 11 one. By setting the cage 9, it is ensured that the position of the ball 10 will not change. By setting the cage 9 to be conical, the cage 9 can press the ball 10 against the inner ring. At the same time, the grease will not leak too much from the gap, increasing the durability of the bearing. By setting two rows of balls 10, the number and force-bearing area of the balls 10 are increased, thereby increasing the load-bearing capacity of the bearing, achieving the purpose of increasing the durability of the bearing, and reducing the influence of thermal deformation on the bearing.

[0027] The outer ring 1 is also provided with a grease injection hole 14, the grease injection hole 14 is communicated with the first grease storage cavity 7, and a plug 15 is also arranged inside the grease injection hole 14. The plug 15 is in threaded cooperation with the grease injection hole 14. The grease in the grease storage groove contacts the lower side of the ball 10. Through the grease injection hole 14, the grease in the first grease storage cavity 7 can be replenished repeatedly, thereby further increasing the durability of the bearing. The plug 15 prevents the grease from leaking from the grease injection hole 14.

[0028] Six countersunk holes 16 are arranged in a circular array on the inner ring one 3, and six threaded holes 17 are arranged in a circular array on the inner ring one 3. Screws 18 are installed in the countersunk holes 16 and the threaded holes 17. The inner ring one 3 and the inner ring two 4 are fixed on the outer ring 1 through the screws 18, so that the inner ring one 3 and the inner ring two 4 are clamped on the outer ring 1. At the same time, the countersunk holes 16 one and the threaded holes 17 two dissipate heat from the bearing to a certain extent.

[0029] When installing the bearing, first install the balls 10 on the cage 9, and put the cage 9 on the inner ring 2, so that the balls 10 abut against the arc-shaped mounting groove 11 one. Then, insert the inner ring one 3 and the inner ring two 4 into its interior from the left and right sides of the outer ring 1 respectively, so that the balls 10 abut against the arc-shaped mounting groove 11 two. Finally, fix the inner ring one 3 and the inner ring two 4 with the screws 18.

[0030] Installation grooves 11-1 are formed on the outer sides of both the inner ring 1-3 and the inner ring 2-4, and installation grooves 11-2 are formed on both sides of the outer ring 1. A sealing ring 21 is arranged in the installation grooves 11-1 and 11-2. The installation groove 11-2 forms an undercut groove 22. The sealing ring 21 is made of fluororubber and is snapped into the undercut groove 22. A steel sheet skeleton 23 is also embedded in the sealing ring 21. By pressing the skeleton to deform it, the sealing ring 21 can be snapped into the undercut groove 22 to seal the inside of the bearing to a certain extent, reducing the dust entering the inside of the bearing. A second grease storage cavity 24 is formed between the sealing ring 21 and the first ball group 5 and the second ball group 6, making the grease more uniform, increasing the lubrication effect, and at the same time further reducing the contact between dust and the balls 10.

[0031] Of course, the above are only typical examples of the present utility model. In addition, the present utility model can also have many other specific implementation manners. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present utility model.

Claims

1. A high-temperature and long-life bearing, comprising an outer ring (1) and an inner ring (2), characterized in that: The inner ring (2) includes an inner ring one (3) and an inner ring two (4). A first ball group (5) is arranged between the outer ring (1) and the inner ring one (3), and a second ball group (6) is arranged between the outer ring (1) and the inner ring two (4). The inner ring one (3) and the inner ring two (4) are symmetrically arranged. The first ball group (5) and the second ball group (6) are symmetrically arranged. A first grease storage cavity (7) is further arranged between the first ball group (5) and the second ball group (6), and grease is arranged in the first grease storage cavity (7).

2. The high-temperature and long-life bearing according to claim 1, characterized in that: The structure of the inner ring one (3) is the same as that of the inner ring two (4), and an arc-shaped installation groove (11) one is arranged inside it. A pair of arc-shaped installation grooves (11) two are symmetrically arranged inside the outer ring (1). The first ball group (5) and the second ball group (6) are both arranged in the corresponding arc-shaped installation groove (11) one and arc-shaped installation groove (11) two.

3. A high-temperature and long-life bearing according to claim 1, characterized in that: The first ball group (5) and the second ball group (6) have the same structure, including a cage (9) and a number of balls (10). The cage (9) is provided with installation grooves (11) with the same number as the balls (10), and the cage (9) is arranged in a conical shape.

4. The high-temperature and high-life bearing according to claim 1, characterized in that: A grease injection hole (14) is further arranged on the outer ring (1). The grease injection hole (14) is communicated with the first grease storage cavity (7). A plug (15) is also arranged in the grease injection hole (14), and the plug (15) is in threaded fit with the grease injection hole (14).

5. A high-temperature and long-life bearing according to claim 1, characterized in that: A countersunk hole (16) is arranged on the inner ring one (3), and a threaded hole (17) is arranged on the inner ring one (3). A screw (18) is installed in the countersunk hole (16) and the threaded hole (17). The inner ring one (3) and the inner ring two (4) are fixed on the outer ring (1) through the screw (18).

6. The high-temperature and high-life bearing according to claim 1, characterized in that: Installation grooves (11) one are arranged on the outer sides of the inner ring one (3) and the inner ring two (4), and installation grooves (11) two are arranged on both sides of the outer ring (1). Sealing rings (21) are arranged in the installation grooves (11) one and the installation grooves (11) two.

7. The high-temperature and long-life bearing according to claim 6, wherein: The installation groove (11) two forms an inverted hook groove (22). The sealing ring (21) is made of fluororubber and is clamped into the inverted hook groove (22). A second grease storage cavity (24) is formed between the sealing ring (21) and the first ball group (5) and the second ball group (6).

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