Multiple seal construction bearing

Abstract

The application relates to the technical field of bearings and discloses a multiple-sealing-structure bearing which comprises a bearing outer ring, first arc-shaped holes are formed in the top and the bottom of the bearing outer ring, a bearing inner ring is arranged in the bearing outer ring, nine groups of rolling beads are arranged on the side of the bearing inner ring close to the bearing outer ring, the side of the nine groups of rolling beads close to the bearing inner ring is in contact with the outer wall of the bearing inner ring, the inner wall of the nine groups of rolling beads close to the bearing outer ring is in contact with the bearing outer ring, the multiple-sealing-structure bearing further comprises a fitting mechanism which comprises a sealing ring. When external airflow enters the inside of the sealing ring, the airflow is in contact with the inclined blocks, after the airflow is in contact with the inclined blocks, the airflow track is changed when the airflow flows through the inclined blocks because the inclined blocks are provided with height differences, so that the changed airflow flows to the rolling beads.

Description

Technical Field

[0001] This invention relates to the field of sealed bearing technology, specifically to bearings with multiple sealing structures. Background Technology

[0002] Sealed bearings are mechanical components that have been optimized for sealing based on ordinary bearings. They have sealing devices installed on both sides of the bearing, which can effectively prevent the intrusion of dust, moisture, impurities, etc., ensure that the internal grease does not leak, maintain a good lubrication environment, and significantly extend the service life. According to the sealing method, they are divided into contact type and non-contact type. The former has a tighter seal but slightly higher friction, while the latter has lower friction and strong high-speed adaptability. They are widely used in automobiles, motors, home appliances and other fields to ensure stable and efficient operation of equipment.

[0003] Patent application CN202320225390.7 discloses a bearing with a multiple sealing structure, including an outer ring and an inner ring. A slot is provided on the left side of the outer ring, and a plug is inserted into the slot. The outer ring has an inner ring groove one and two inner ring grooves two inside, and the two inner ring grooves two are symmetrically arranged on the upper and lower sides of the inner ring groove one near the center position.

[0004] Existing sealed bearings tend to experience high internal temperatures during operation. To extend their service life, a separate heat dissipation device is often required, which not only increases cost and complexity but also places higher demands on the overall equipment design, thus requiring improvement. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the purpose of this invention is to provide a bearing with a multi-seal structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a multi-sealed bearing, comprising a bearing outer ring, wherein a first arc-shaped hole is provided at both the top and bottom of the bearing outer ring, a bearing inner ring is disposed inside the bearing outer ring, and nine sets of rolling balls are disposed on the side of the bearing inner ring near the bearing outer ring, wherein the side of each of the nine sets of rolling balls near the bearing inner ring is in contact with the outer wall of the bearing inner ring, and the side of each of the nine sets of rolling balls near the inner wall of the bearing outer ring is in contact with the bearing outer ring, further comprising:

[0007] The bonding mechanism includes a sealing ring. The outer wall of the sealing ring near the outer ring of the bearing contacts the inner wall of the outer ring, and the inner wall of the sealing ring near the inner ring of the bearing contacts the outer wall of the inner ring. Four sets of second arc-shaped holes are provided on the side of the sealing ring away from the outer ring. A circular groove is provided on the side of the sealing ring near the outer ring. Four sets of inclined blocks are provided on the inner wall of the circular groove, and the sides of the four inclined blocks near the circular groove are fixedly connected to the groove wall. Four sets of insertion rods are provided on the side of the sealing ring near the outer ring, and the sides of the four insertion rods near the sealing ring are fixedly connected to the inner wall of the sealing ring. These inclined blocks are used to guide airflow.

[0008] According to the above technical solution, the inner walls of the four sets of insertion rods are provided with connecting rods, and the four sets of connecting rods are all fixedly connected to the inner walls of the insertion rods. The side of the four sets of insertion rods near the first arc-shaped hole is inserted into the inner wall of the first arc-shaped hole. The fitting mechanism is set in two sets, which are symmetrically arranged with the middle of the outer ring of the bearing as the center. The insertion rod is used to fix the sealing ring.

[0009] According to the above technical solution, it also includes a drainage mechanism, which includes a protective shell. The side of the protective shell near the outer wall of the sealing ring is fixedly connected to the outer wall of the sealing ring. The inner wall of the protective shell is provided with a first curved plate, which is used to make the bearing achieve a sealing state.

[0010] According to the above technical solution, the first curved plate is rotatably connected to the inner wall of the protective shell through a first rotating shaft. A first rectangular groove is provided on the top of the first curved plate, and a first fixing block is provided on the groove wall of the first rectangular groove. The first rectangular groove is used to limit the position of the first fixing block.

[0011] According to the above technical solution, the side of the first fixing block closest to the first rectangular groove is fixedly connected to the groove wall of the first rectangular groove. A pull rope is fixedly connected to the right side of the first fixing block. A second fixing block is fixedly connected to the side of the pull rope away from the first fixing block. The pull rope is used to control the rotation angle of the first curved plate and the second curved plate.

[0012] According to the above technical solution, a second curved plate is provided on the right side of the first curved plate. The second curved plate is rotatably connected to the inner wall of the protective shell through a second rotating shaft. A second rectangular groove is provided on the top of the second curved plate. The side of the second fixing block near the second rectangular groove is fixedly connected to the groove wall of the second rectangular groove. The second curved plate is used to guide the airflow into the sealing ring.

[0013] According to the above technical solution, a second arc-shaped groove is provided at the bottom of the first curved plate, the side of the first curved plate near the sealing ring is in contact with the outer wall of the sealing ring, and a first arc-shaped groove is provided on the side of the second curved plate near the sealing ring. The second arc-shaped groove is used to receive high-speed airflow.

[0014] According to the above technical solution, the side of the second curved plate closest to the outer wall of the sealing ring contacts the outer wall of the sealing ring. The drainage mechanism is configured as four sets, all installed around the outer wall of the sealing ring. The drainage mechanism is configured as two sets, all symmetrically arranged with the middle of the outer ring of the bearing as the center. The drainage mechanism is used to control the sealing state of the sealing ring.

[0015] Compared with the prior art, the present invention provides a bearing with a multi-seal structure, which has the following advantages:

[0016] 1. This invention, by setting a bonding mechanism, ensures that the bearing is in a sealed state when stationary. When the bearing is rotating at high speed, the bonding mechanism opens the bearing, allowing the heat generated by friction during rotation to dissipate. This ensures that external dust or oil does not enter the bearing when it is sealed. When the bearing is rotating, the bonding mechanism dissipates the high internal temperature, thus achieving a heat dissipation effect from the outside to the inside of the bearing.

[0017] 2. By setting an inclined block, when the external airflow enters the sealing ring, it will come into contact with the inclined block. After the airflow comes into contact with the inclined block, the airflow trajectory will change when the airflow passes through the inclined block due to the height difference of the inclined block, so that the changed airflow will flow towards the rolling ball.

[0018] 3. By setting a connecting rod, this invention ensures that the internal temperature of the bearing will rise when it rotates at high speed. Because the connecting rod is made of a rigid material, it will begin to expand when it comes into contact with the high temperature generated by friction. This will cause the connecting rod to apply a pushing force to the insertion rod, thus ensuring that the seal ring will not fall off when the bearing rotates at high speed.

[0019] 4. This invention possesses unique adaptive capabilities through its airflow guiding mechanism. Regardless of whether the bearing rotates forward or backward, it ensures smooth airflow into the sealing ring, achieving heat dissipation within the bearing. When the bearing's rotational speed decreases, the airflow guiding mechanism promptly closes the sealing ring, effectively preventing external impurities from entering and ensuring the stable operation of the sealed bearing. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the bearing outer ring of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the first arc-shaped hole of the present invention;

[0023] Figure 4 This is a schematic diagram of the bonding device of the present invention;

[0024] Figure 5 This is a schematic diagram of the circular groove structure of the present invention;

[0025] Figure 6 This is a schematic diagram of the sealing ring of the drainage mechanism of the present invention;

[0026] Figure 7 This is a schematic diagram of the structure of the protective shell of the present invention;

[0027] Figure 8 This is a schematic diagram of the structure of the pulling rope of the present invention;

[0028] Figure 9 This is a schematic diagram of the inner ring of the bearing of the present invention.

[0029] In the diagram: 1. Bearing outer ring; 2. Bearing inner ring; 3. Ball bearing; 4. First arc-shaped hole; 5. Fitting mechanism; 501. Sealing ring; 502. Circular groove; 503. Inclined block; 504. Second arc-shaped hole; 505. Insertion rod; 506. Connecting rod; 6. Drainage mechanism; 601. Protective shell; 602. First curved plate; 603. First fixing block; 604. Pull rope; 605. Second fixing block; 606. Second curved plate; 607. First arc-shaped groove; 608. Second arc-shaped groove; 609. First rectangular groove; 610. Second rectangular groove. Detailed Implementation

[0030] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0031] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

[0032] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0033] Example 1: See Figures 1-6 The present invention provides a technical solution: a multi-sealed bearing, including an outer ring 1, with a first arc-shaped hole 4 at both the top and bottom of the outer ring 1; an inner ring 2 is disposed inside the outer ring 1; nine sets of rolling balls 3 are disposed on the side of the inner ring 2 near the outer ring 1; the side of each set of rolling balls 3 near the inner ring 2 is in contact with the outer wall of the inner ring 2; and the side of each set of rolling balls 3 near the inner wall of the outer ring 1 is in contact with the outer ring 1. The invention is characterized by further comprising:

[0034] The bonding mechanism 5 includes a sealing ring 501. The outer wall of the sealing ring 501 near the outer ring 1 of the bearing contacts the inner wall of the outer ring 1, and the inner wall of the sealing ring 501 near the inner ring 2 of the bearing contacts the outer wall of the inner ring 2. Four sets of second arc-shaped holes 504 are provided on the side of the sealing ring 501 away from the outer ring 1. A circular groove 502 is provided on the side of the sealing ring 501 near the outer ring 1. Four sets of inclined blocks 503 are provided on the inner wall of the circular groove 502. By setting the inclined blocks 503, the airflow trajectory can be changed by the amplitude of the height of the inclined blocks 503 when the airflow passes through them. The sides of the four inclined blocks 503 near the circular groove 502 are all fixedly connected to the groove wall of the circular groove 502, thus sealing the airflow. Four sets of insertion rods 505 are provided on the side of ring 501 near the outer ring 1 of the bearing. The side of the four sets of insertion rods 505 near the sealing ring 501 is fixedly connected to the inner wall of the sealing ring 501. The inclined block 503 is used to guide the airflow. The inner wall of the four sets of insertion rods 505 is provided with connecting rods 506. All four sets of connecting rods 506 are fixedly connected to the inner wall of the insertion rods 505. By setting the connecting rods 506, the characteristics of thermal expansion and contraction of the connecting rods 506 can be used to ensure that the sealing ring 501 will not fall off when the bearing rotates at high speed. The side of the four sets of insertion rods 505 near the first arc-shaped hole 4 is inserted into the inner wall of the first arc-shaped hole 4. The fitting mechanism 5 is set in two sets, which are symmetrically arranged with the middle of the outer ring 1 of the bearing as the center. The insertion rods 505 are used to fix the sealing ring 501.

[0035] The working principle of this embodiment is as follows: When it is necessary to install the sealing ring 501 on the bearing, the sealing ring 501 is moved towards the outer ring 1 of the bearing. When the sealing ring 501 moves, it will drive the tilting block 503 to move synchronously, so that the tilting block 503 will also move towards the outer ring 1 of the bearing. When the sealing ring 501 moves, it will also drive the insertion rod 505 to move. After moving a certain distance, the insertion rod 505 will engage with the inner wall of the first arc-shaped hole 4. The material of the insertion rod 505 is rubber. When the insertion rod 505 moves, it will drive the connecting rod 506 to move synchronously, so that the connecting rod 506 will also be inside the first arc-shaped hole 4. When the bearing starts to rotate, the external airflow will enter the sealing ring 501 through the second arc-shaped hole 504. When the airflow flows out from the second arc-shaped hole 504, it will be carried by the centrifugal force of the bearing rotation. The movement causes the airflow to flow along the inside of the circular groove 502. When the airflow reaches the inclined block 503, it flows from the lower part of the inclined block 503 to the upper part. Because the upper part of the inclined block 503 has a small arc, the airflow changes its flow trajectory when passing the inclined block 503, and flows towards the high-speed rotating ball 3. This causes the external cold air to meet the internal high temperature, and then dissipates heat from the inside of the bearing. When the ball 3 rotates at high speed, it generates friction, which raises the internal temperature of the bearing. When the bearing is in a high-temperature state, the connecting rod 506, because it is made of steel, will start to expand when heated. This causes the connecting rod 506 to push the insertion rod 505 against the inner wall of the first arc-shaped hole 4, thereby improving the fixing effect and preventing the sealing ring 501 from falling off when the bearing rotates at high speed.

[0036] Example 2: Please refer to Figures 7-9Based on Embodiment 1, the present invention provides a technical solution that further includes a drainage mechanism 6. The drainage mechanism 6 includes a protective shell 601. The side of the protective shell 601 closest to the outer wall of the sealing ring 501 is fixedly connected to the outer wall of the sealing ring 501. A first curved plate 602 is provided on the inner wall of the protective shell 601. The first curved plate 602 is used to achieve a sealing state for the bearing. The first curved plate 602 is rotatably connected to the inner wall of the protective shell 601 through a first rotating shaft. A first rectangular groove 609 is provided on the top of the first curved plate 602. A first fixing block 603 is provided on the groove wall of the first rectangular groove 609. The groove 609 is used to define the position of the first fixing block 603. The side of the first fixing block 603 closest to the first rectangular groove 609 is fixedly connected to the groove wall of the first rectangular groove 609. A pull rope 604 is fixedly connected to the right side of the first fixing block 603. A second fixing block 605 is fixedly connected to the side of the pull rope 604 away from the first fixing block 603. The pull rope 604 is used to control the rotation angle of the first curved plate 602 and the second curved plate 606. The second curved plate 606 is provided on the right side of the first curved plate 602. The second curved plate 606 is connected to the inner wall of the protective shell 601 via a second rotating shaft. The first curved plate 602 has a second rectangular groove 610 on its top. The second fixing block 605 is fixedly connected to the groove wall of the second rectangular groove 610 on one side near the groove. The second curved plate 606 guides airflow into the sealing ring 501. The first curved plate 602 has a second arc-shaped groove 608 at its bottom. Whether the first curved plate 602 contacts the sealing ring 501 determines whether the bearing is in a sealed state. When the bearing is in a sealed state, external impurities cannot enter the bearing. When the bearing is in an open state, external impurities cannot enter the bearing. To dissipate heat inside the bearing, the first curved plate 602, near the sealing ring 501, contacts the outer wall of the sealing ring 501. The second curved plate 606, near the sealing ring 501, has a first arc-shaped groove 607. The second arc-shaped groove 608 is used to receive high-speed airflow. The second curved plate 606, near the outer wall of the sealing ring 501, contacts the outer wall of the sealing ring 501. The airflow guiding mechanism 6 is configured in four sets, all installed around the outer wall of the sealing ring 501. Two sets of the airflow guiding mechanism 6 are symmetrically arranged with the middle of the outer ring 1 of the bearing as the center. The airflow guiding mechanism 6 is used to control the sealing state of the sealing ring 501.

[0037] The working principle of this embodiment is as follows: When the bearing is stationary, the first curved plate 602 and the second curved plate 606 are located outside the sealing ring 501. The sides of the first curved plate 602 and the second curved plate 606 that are close to each other are pulled together by the pull rope 604. Therefore, the first curved plate 602 and the second curved plate 606 will always be in contact with the outer wall of the sealing ring 501, thus ensuring that the bearing is in a sealed state. When the bearing begins to rotate clockwise, the second curved plate 606 will be blown by the airflow. Because the bearing is rotating at high speed, the airflow near the protective shell 601 will have a high velocity, thus providing a certain degree of... The driving force will push the second curved plate 606, causing it to rotate inside the protective shell 601. When the second curved plate 606 rotates, it will drive the second fixed block 605 to move, which in turn will pull the pull rope 604. This will cause the pull rope 604 to pull the first curved plate 602 into an inclined state. As a result, when the airflow passes through the inside of the protective shell 601, it will be blocked by the first curved plate 602. The airflow will then flow along the outer wall of the first curved plate 602 into the second arc-shaped hole 504, and thus enter the sealing ring 501.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A bearing with a multi-seal structure, comprising a bearing outer ring (1), wherein the bearing outer ring (1) has a first arc-shaped hole (4) at both its top and bottom, and a bearing inner ring (2) is disposed inside the bearing outer ring (1). Nine sets of rolling balls (3) are disposed on the side of the bearing inner ring (2) near the bearing outer ring (1), and the side of each of the nine sets of rolling balls (3) near the bearing inner ring (2) is in contact with the outer wall of the bearing inner ring (2). The side of each of the nine sets of rolling balls (3) near the inner wall of the bearing outer ring (1) is in contact with the bearing outer ring (1). The bearing is characterized in that... Also includes: The fitting mechanism (5) includes a sealing ring (501). The outer wall of the sealing ring (501) near the outer ring (1) of the bearing contacts the inner wall of the outer ring (1). The inner wall of the sealing ring (501) near the inner ring (2) of the bearing contacts the outer wall of the inner ring (2). Four sets of second arc-shaped holes (504) are provided on the side of the sealing ring (501) away from the outer ring (1). The sealing ring (501) near the outer ring (1) has four sets of second arc-shaped holes (504). A circular groove (502) is provided on the side. Four sets of inclined blocks (503) are provided on the inner wall of the circular groove (502). The side of the four sets of inclined blocks (503) near the circular groove (502) is fixedly connected to the groove wall of the circular groove (502). Four sets of insertion rods (505) are provided on the side of the sealing ring (501) near the outer ring (1) of the bearing. The side of the four sets of insertion rods (505) near the sealing ring (501) is fixedly connected to the inner wall of the sealing ring (501). The inclined block (503) is used to guide the airflow.

2. The bearing with a multi-seal structure according to claim 1, characterized in that: The inner walls of the four sets of insertion rods (505) are provided with connecting rods (506). The four sets of connecting rods (506) are all fixedly connected to the inner walls of the insertion rods (505). The four sets of insertion rods (505) are all inserted into the inner walls of the first arc-shaped hole (4) on the side near the first arc-shaped hole (4). The fitting mechanism (5) is set in two sets, which are symmetrically arranged with the middle of the outer ring (1) of the bearing as the center. The insertion rod (505) is used to fix the sealing ring (501).

3. The bearing with a multi-seal structure according to claim 1, characterized in that: It also includes a drainage mechanism (6), which includes a protective shell (601). The protective shell (601) is fixedly connected to the outer wall of the sealing ring (501) on the side near the outer wall of the sealing ring (501). The inner wall of the protective shell (601) is provided with a first curved plate (602), which is used to make the bearing reach a sealed state.

4. The bearing with a multi-seal structure according to claim 3, characterized in that: The first curved plate (602) is rotatably connected to the inner wall of the protective shell (601) via a first rotating shaft. A first rectangular groove (609) is provided on the top of the first curved plate (602). A first fixing block (603) is provided on the groove wall of the first rectangular groove (609). The first rectangular groove (609) is used to limit the position of the first fixing block (603).

5. The bearing with a multi-seal structure according to claim 4, characterized in that: The first fixing block (603) is fixedly connected to the wall of the first rectangular groove (609) on the side closest to the first rectangular groove (609). A pull rope (604) is fixedly connected to the right side of the first fixing block (603). A second fixing block (605) is fixedly connected to the side of the pull rope (604) away from the first fixing block (603). The pull rope (604) is used to control the rotation angle of the first curved plate (602) and the second curved plate (606).

6. The bearing with a multi-seal structure according to claim 5, characterized in that: A second curved plate (606) is provided on the right side of the first curved plate (602). The second curved plate (606) is rotatably connected to the inner wall of the protective shell (601) through a second rotating shaft. A second rectangular groove (610) is provided on the top of the second curved plate (606). The side of the second fixing block (605) near the second rectangular groove (610) is fixedly connected to the groove wall of the second rectangular groove (610). The second curved plate (606) is used to guide the airflow into the sealing ring (501).

7. The bearing with a multi-seal structure according to claim 6, characterized in that: The first curved plate (602) has a second arc groove (608) at its bottom. The side of the first curved plate (602) near the sealing ring (501) is in contact with the outer wall of the sealing ring (501). The side of the second curved plate (606) near the sealing ring (501) has a first arc groove (607). The second arc groove (608) is used to receive high-speed airflow.

8. The bearing with a multi-seal structure according to claim 7, characterized in that: The second curved plate (606) is in contact with the outer wall of the sealing ring (501) on the side near the outer wall of the sealing ring (501). The drainage mechanism (6) is configured as four sets, all installed around the outer wall of the sealing ring (501). The drainage mechanism (6) is configured as two sets, all symmetrically arranged with the middle of the outer ring (1) of the bearing as the center. The drainage mechanism (6) is used to control the sealing state of the sealing ring (501).

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