Bearing with multiple sealing structures

Abstract

The invention relates to the technical field of bearings, and discloses a multi-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, and nine sets of rolling beads are arranged on the side, close to the bearing outer ring, of the bearing inner ring. The sides, close to the bearing inner ring, of the nine sets of rolling balls make contact with the outer wall of the bearing inner ring, the inner walls, close to the bearing outer ring, of the nine sets of rolling balls make contact with the bearing outer ring, and the fitting mechanism comprises a sealing ring. According to the sealing ring, the inclined blocks are arranged, when external air flow enters the sealing ring, the external air flow makes contact with the inclined blocks, after the air flow makes contact with the inclined blocks, due to the fact that the inclined blocks have the height difference, the air flow track changes when the air flow flows through the inclined blocks, and therefore the changed air flow can flow towards the rolling balls.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sealed bearings, in particular to a multi-sealing structure bearing. BACKGROUND

[0002] A sealed bearing is a mechanical component that is optimized for sealing based on a common bearing. It is installed with sealing devices on both sides of the bearing, which can effectively block the intrusion of dust, water vapor, impurities, etc., ensure that the internal lubricating grease does not leak, maintain a good lubrication environment, and significantly extend the service life. According to the sealing method, it is divided into contact type and non-contact type, the former is sealed but has slightly larger friction, and the latter has smaller friction and strong adaptability at high speed, and is widely used in the fields of automobiles, motors, household appliances, etc., to ensure stable and efficient operation of equipment.

[0003] The patent application with application number CN202320225390.7 discloses a bearing with a multi-sealing structure, which comprises an outer ring and an inner ring. A slot is formed on the left side surface of the outer ring, and an insert block is inserted into the slot. An inner ring groove one and two inner ring grooves two are provided inside the outer ring, and the two inner ring grooves two are symmetrically arranged on the upper side and the lower side of the inner ring groove one near the center position.

[0004] The existing sealed bearing is prone to internal temperature rise during operation. In order to prolong its service life, it is often necessary to separately install a heat dissipation device, which not only increases the cost and complexity, but also puts higher requirements on the overall design of the equipment, and therefore needs to be improved. SUMMARY

[0005] In view of the deficiencies of the prior art, the purpose of the present application is to provide a multi-sealing structure bearing to solve the problems raised in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a multi-sealing structure bearing, comprising a bearing outer ring, the top and bottom of the bearing outer ring are provided with a first arc-shaped hole, the inside of the bearing outer ring is provided with a bearing inner ring, one side of the bearing inner ring close to the bearing outer ring is provided with nine groups of rolling beads, one 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, and the inner wall of the nine groups of rolling beads close to the bearing outer ring is in contact with the bearing outer ring, further comprising: The fitting mechanism comprises a sealing ring, one side of the sealing ring close to the outer wall of the bearing outer ring is in contact with the inner wall of the bearing outer ring, one side of the sealing ring close to the outer wall of the bearing inner ring is in contact with the inner wall of the bearing inner ring, four groups of second arc-shaped holes are formed in the side of the sealing ring away from the bearing outer ring, a circular groove is formed in the side of the sealing ring close to the bearing outer ring, four groups of inclined blocks are arranged on the inner wall of the circular groove, the side of the four groups of inclined blocks close to the circular groove is fixedly connected with the groove wall of the circular groove, four groups of insertion rods are arranged on the side of the sealing ring close to the bearing outer ring, and the side of the four groups of insertion rods close to the sealing ring is fixedly connected with the inner wall of the sealing ring. The inclined blocks are used for guiding the airflow.

[0007] According to the above technical scheme, four groups of the insertion rod inner walls are provided with connecting rods, the four groups of the connecting rods are fixedly connected with the insertion rod inner walls, the side of the four groups of the insertion rods close to the first arc-shaped hole is inserted into the inner wall of the first arc-shaped hole, and the fitting mechanism is provided as two groups which are symmetrically arranged with the middle part of the bearing outer ring as the center. The insertion rod is used for fixing the sealing ring.

[0008] According to the above technical scheme, the fitting mechanism further comprises a drainage mechanism, the drainage mechanism comprises a protective shell, the side of the protective shell close to the outer wall of the sealing ring is fixedly connected with the outer wall of the sealing ring, and the inner wall of the protective shell is provided with a first bent plate. The first bent plate is used for enabling the bearing to reach a sealed state.

[0009] According to the above technical scheme, the first bent plate is rotationally connected with the inner wall of the protective shell through a first rotation shaft, a first rectangular groove is formed in the top of the first bent plate, the groove wall of the first rectangular groove is provided with a first fixing block, and the first rectangular groove is used for limiting the position of the first fixing block.

[0010] According to the above technical scheme, the side of the first fixing block close to the first rectangular groove is fixedly connected with the groove wall of the first rectangular groove, a pulling rope is fixedly connected to the right side of the first fixing block, and a second fixing block is fixedly connected to the side of the pulling rope away from the first fixing block. The pulling rope is used for controlling the rotation angle of the first bent plate and the second bent plate.

[0011] According to the above technical scheme, the right side of the first bent plate is provided with a second bent plate, the second bent plate is rotationally connected with the inner wall of the protective shell through a second rotation shaft, a second rectangular groove is formed in the top of the second bent plate, and the side of the second fixing block close to the second rectangular groove is fixedly connected with the groove wall of the second rectangular groove. The second bent plate is used for guiding the airflow to flow into the sealing ring.

[0012] According to the above technical scheme, a second arc-shaped groove is formed in the bottom of the first bent plate, the side of the first bent plate close to the sealing ring is in contact with the outer wall of the sealing ring, a first arc-shaped groove is formed in the side of the second bent plate close to the sealing ring, and the second arc-shaped groove is used for receiving the high-speed airflow.

[0013] According to the technical scheme, the second curved plate is in contact with the outer wall of the sealing ring on the side close to the outer wall of the sealing ring, the drainage mechanism is arranged as four groups and is installed around the outer wall of the sealing ring, and the drainage mechanism is arranged as two groups and is symmetrically arranged with the middle part of the outer ring of the bearing as the center.

[0014] Compared with the prior art, the multiple sealing structure bearing has the following beneficial effects: 1、The fitting mechanism is arranged, so that the bearing is in a sealed state in a static state, and the fitting mechanism can bring out heat generated by friction when the bearing rotates at high speed, so that dust or oil stains outside cannot enter the bearing in a sealed state, and the fitting mechanism can bring out high temperature inside when the bearing rotates, so that the heat dissipation effect from the outside to the inside of the bearing is realized.

[0015] 2、The inclined block is arranged, when the external airflow enters the inside of the sealing ring, the airflow will contact the inclined block, when the airflow contacts the inclined block, the airflow track will change when the airflow flows through the inclined block, so that the changed airflow flows to the rolling ball.

[0016] 3、The connecting rod is arranged, so that the internal temperature of the bearing will rise when the bearing rotates at high speed, the connecting rod is made of rigid material, so that the connecting rod will start to expand when the connecting rod contacts the high temperature generated by friction, so that the connecting rod will apply a pushing force to the insertion rod, so that the sealing ring will not fall off when the bearing rotates at high speed.

[0017] 4、The drainage mechanism is arranged, which has unique self-adaptive ability. Whether the bearing rotates forward or reversely, it can ensure that the airflow smoothly enters the inside of the sealing ring, and realizes heat dissipation of the inside of the bearing. When the rotation speed of the bearing decreases, the drainage mechanism will close the sealing ring in time, effectively prevents foreign matters outside from entering the inside of the sealing ring, and ensures stable operation of the sealed bearing. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a structural schematic view of the present application; Figure 2 is a structural schematic view of the bearing outer ring of the present application; Figure 3 is a structural schematic view of the first arc-shaped hole of the present application; Figure 4 is a structural schematic view of the fitting device of the present application; Figure 5 Structure diagram of the circular groove of the application; Figure 6 Structure diagram of the sealing ring of the drainage mechanism of the application; Figure 7 Structure diagram of the protective shell of the application; Figure 8 Structure diagram of the pulling rope of the application; Figure 9 Structure diagram of the bearing inner ring of the application.

[0019] In the figure: 1, bearing outer ring; 2, bearing inner ring; 3, rolling ball; 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 fixed block; 604, pulling rope; 605, second fixed block; 606, second curved plate; 607, first arc-shaped groove; 608, second arc-shaped groove; 609, first rectangular groove; 610, second rectangular groove. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application.

[0021] Examples of the described embodiments are shown in the drawings, in which the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary and are intended to explain the application, and cannot be understood as a limitation of the application.

[0022] In the application, unless explicitly defined and limited, the terms “mounting”, “connection”, “connecting”, “fixing” and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meanings of the above terms in the application can be understood according to the specific circumstances.

[0023] Embodiment one: refer to Figures 1-6The application provides the technical scheme: a multiple sealing structure bearing, which comprises a bearing outer ring 1, a first arc-shaped hole 4 is formed in the top and the bottom of the bearing outer ring 1, a bearing inner ring 2 is arranged in the bearing outer ring 1, nine groups of rolling beads 3 are arranged on the side of the bearing inner ring 2 close to the bearing outer ring 1, the side of the nine groups of rolling beads 3 close to the bearing inner ring 2 is in contact with the outer wall of the bearing inner ring 2, and the inner wall of the nine groups of rolling beads 3 close to the bearing outer ring 1 is in contact with the bearing outer ring 1, characterized by further comprising: a fitting mechanism 5, the fitting mechanism 5 comprises a sealing ring 501, the outer wall of the sealing ring 501 on the side close to the bearing outer ring 1 is in contact with the inner wall of the bearing outer ring 1, the inner wall of the sealing ring 501 on the side close to the bearing inner ring 2 is in contact with the outer wall of the bearing inner ring 2, four second arc-shaped holes 504 are formed in the side of the sealing ring 501 away from the bearing outer ring 1, a circular groove 502 is formed in the side of the sealing ring 501 close to the bearing outer ring 1, four inclined blocks 503 are arranged on the inner wall of the circular groove 502, the inclined blocks 503 can change the flow track of the airflow by the height of the inclined blocks 503 when the airflow passes through the inclined blocks 503, the side of the four inclined blocks 503 close to the circular groove 502 is fixedly connected with the groove wall of the circular groove 502, four insertion rods 505 are arranged on the side of the sealing ring 501 close to the bearing outer ring 1, the inner wall of the four insertion rods 505 on the side close to the sealing ring 501 is fixedly connected with the sealing ring 501, the inclined blocks 503 are used for guiding the airflow, connecting rods 506 are arranged on the inner wall of the four insertion rods 505, the inner wall of the four connecting rods 506 is fixedly connected with the insertion rods 505, the connecting rods 506 can ensure that the insertion rods 505 do not fall off from the sealing ring 501 when the bearing rotates at high speed by the cold shrinkage and thermal expansion characteristics of the connecting rods 506, and the four insertion rods 505 on the side close to the first arc-shaped hole 4 are inserted into the inner wall of the first arc-shaped hole 4, the fitting mechanism 5 is symmetrically arranged with the center being the middle part of the bearing outer ring 1, and the insertion rods 505 are used for fixing the sealing ring 501.

[0024] The working principle of the embodiment is: when the sealing ring 501 needs to be installed on the bearing, the sealing ring 501 starts to move towards the bearing outer ring 1 by moving, and when the sealing ring 501 moves, the inclined block 503 moves synchronously to make the inclined block 503 also move towards the bearing outer ring 1, and when the sealing ring 501 moves, the insertion rod 505 also moves, and when the insertion rod 505 moves a distance, it is combined with the inner wall of the first arc-shaped hole 4, and the material of the insertion rod 505 is rubber material, when the insertion rod 505 moves, the connecting rod 506 moves synchronously, so that the connecting rod 506 is also inside the first arc-shaped hole 4, when the bearing starts to rotate, the airflow outside will enter the sealing ring 501 inside through the second arc-shaped hole 504, when the airflow flows out of the second arc-shaped hole 504, it will be driven by the centrifugal force of the bearing rotation, so that the airflow will flow inside the circular groove 502, when the airflow flows to the inclined block 503, the airflow will flow from the low part of the inclined block 503 to the high part, because the high part of the inclined block 503 has a small arc, so that the airflow changes the flow trajectory when passing through the inclined block 503, so as to flow to the direction of the rolling ball 3 rotating at high speed, so that the external cold air meets the internal high temperature, and then cools the bearing inside, and when the rolling ball 3 rotates at high speed, the friction force is generated, so that the temperature in the bearing rises, when the bearing inside is in high temperature state, the connecting rod 506 is made of steel material, so it will start to expand when heated, so that the connecting rod 506 will push the insertion rod 505 to extrude the inner wall of the first arc-shaped hole 4, so as to improve the fixing effect and prevent the sealing ring 501 from falling off when the bearing rotates at high speed.

[0025] Embodiment two: please refer to Figures 7-9On the basis of embodiment one, the application provides technical solutions: further comprising a drainage mechanism 6, the drainage mechanism 6 comprises a protective shell 601, the protective shell 601 is fixedly connected with the outer wall of the sealing ring 501 on the side close to the outer wall of the sealing ring 501, the inner wall of the protective shell 601 is provided with a first curved plate 602, the first curved plate 602 is used for making the bearing reach a sealed state, the first curved plate 602 is rotatably connected with the inner wall of the protective shell 601 through a first rotating shaft, a first rectangular groove 609 is formed in the top of the first curved plate 602, the groove wall of the first rectangular groove 609 is provided with a first fixed block 603, the first rectangular groove 609 is used for limiting the position of the first fixed block 603, the first fixed block 603 is fixedly connected with the groove wall of the first rectangular groove 609 on the side close to the first rectangular groove 609, a pulling rope 604 is fixedly connected with the right side of the first fixed block 603, a second fixed block 605 is fixedly connected with the side of the pulling rope 604 away from the first fixed block 603, the pulling rope 604 is used for controlling the rotating angle of the first curved plate 602 and a second curved plate 606, the second curved plate 606 is arranged on the right side of the first curved plate 602, the second curved plate 606 is rotatably connected with the inner wall of the protective shell 601 through a second rotating shaft, a second rectangular groove 610 is formed in the top of the second curved plate 606, the second fixed block 605 is fixedly connected with the groove wall of the second rectangular groove 610 on the side close to the second rectangular groove 610, the second curved plate 606 is used for guiding airflow to flow into the sealing ring 501, a second arc-shaped groove 608 is formed in the bottom of the first curved plate 602, whether the first curved plate 602 is in contact with the sealing ring 501 is used to judge whether the bearing is in a sealed state, when the bearing is in a sealed state, it can be ensured that impurities in the outside world cannot enter the inside of the bearing, when the bearing is in an open state, the inside of the bearing can be cooled, the side of the first curved plate 602 close to the sealing ring 501 is in contact with the outer wall of the sealing ring 501, a first arc-shaped groove 607 is formed in the side of the second curved plate 606 close to the sealing ring 501, the second arc-shaped groove 608 is used for receiving high-speed airflow, the side of the second curved plate 606 close to the outer wall of the sealing ring 501 is in contact with the outer wall of the sealing ring 501, the drainage mechanism 6 is arranged as four groups and is installed around the outer wall of the sealing ring 501, the drainage mechanism 6 is arranged as two groups and is symmetrically arranged with the middle part of the bearing outer ring 1 as the center, the drainage mechanism 6 is used for controlling the sealing state of the sealing ring 501.

[0026] The working principle of the embodiment is as follows: when the bearing is in a static state, the first curved plate 602 and the second curved plate 606 are located outside the outer wall of the sealing ring 501, and the side of the first curved plate 602 and the second curved plate 606 close to each other is pulled by the pulling rope 604, so that the first curved plate 602 and the second curved plate 606 are always attached to the outer wall of the sealing ring 501, thereby ensuring that the bearing is in a sealed state. When the bearing starts to rotate clockwise, the second curved plate 606 will be blown by the airflow, and because the bearing is rotating at high speed, the airflow near the protective shell 601 will have a high flow rate, thereby having a certain pushing force, which will push the second curved plate 606, so that the second curved plate 606 starts to rotate inside the protective shell 601. When the second curved plate 606 rotates, it drives the second fixed block 605 to move, so that the second fixed block 605 moves and pulls the pulling rope 604 to move, so that the pulling rope 604 moves and pulls the first curved plate 602 to an inclined state. When the airflow passes through the inside of the protective shell 601, it will be blocked by the first curved plate 602, and the airflow will flow along the outer wall of the first curved plate 602 into the second arc-shaped hole 504, thereby entering the inside of the sealing ring 501.

[0027] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0028] Finally, it should be noted that the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the foregoing embodiments of the present application have been described in detail, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A bearing with a multi-seal structure, comprising an outer ring (1), wherein the outer ring (1) has a first arc-shaped hole (4) at both its top and bottom, and 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), wherein the side of each of the nine sets 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 of the nine sets of rolling balls (3) near the inner wall of the outer ring (1) is in contact with the outer ring (1), 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. 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).

2. The bearing with a multi-seal structure according to claim 1, 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).

Images