Double-row roller bearing with unbalance loading prevention mechanism

Abstract

The invention relates to the technical field of double-row roller bearings, and discloses a double-row roller bearing provided with an anti-unbalance-loading mechanism, the double-row roller bearing provided with the anti-unbalance-loading mechanism comprises a protective shell, a plurality of sliding rods are slidably connected in the protective shell, a fixed plate is arranged on the sliding rods, two rotating plates are arranged at the two ends of the fixed plate respectively, and the rotating plates are arranged on the protective shell. Connecting plates are rotationally connected to the rotating plate, elastic pieces are arranged on every two connecting plates, limiting plates are rotationally connected to the connecting plates, arc-shaped plates are rotationally connected to the exteriors of every two limiting plates, a plurality of balls are rotationally connected to the interiors of the arc-shaped plates, and stabilizing mechanisms are arranged on the limiting plates. According to the device, the sliding rod, the arc-shaped plate and the ball are matched to drive the connecting shaft to be supported without hindering the motion trail of the connecting shaft, and when the connecting shaft is uneven in stress, the sliding rod is driven to retract to achieve visual warning of uneven stress; a stabilizing mechanism composed of a long plate, a spring and a telescopic rod drives the supporting stability of the arc-shaped plate and the balls to be enhanced.

Description

Technical Field

[0001] This invention relates to the field of double-row roller bearing technology, and more particularly to a double-row roller bearing equipped with an anti-eccentric loading mechanism. Background Technology

[0002] In the field of mechanical transmission, such as machine tools, automobiles, and construction machinery, double-row roller bearings are often used to support rotating shafts, reduce friction during shaft movement, and ensure stable operation of the shaft system. Especially in scenarios subject to complex loads, their performance is crucial to the operating accuracy and service life of the equipment.

[0003] A search revealed Chinese Patent Publication No. CN213451343U, which discloses a roller bearing comprising an outer ring, an inner ring, a cage, and rollers disposed within the cage. The rollers are radially symmetrical spherical rollers, each including a large end and a small end. The inner surface of the outer ring has an outer raceway adapted to the spherical rollers, and the outer surface of the inner ring has an inner raceway adapted to the spherical rollers. The spherical rollers are disposed between the outer and inner raceways, with the small end of the rollers radially outwardly inclined. The inner raceway has a limiting step corresponding to the small end of the spherical rollers, abutting against the end face of the small end. A first sealing ring is provided between the outer and inner rings corresponding to the large end of the spherical roller bearing, and a second sealing ring is provided corresponding to the small end of the spherical rollers. This invention provides a roller bearing capable of both self-aligning and withstanding large radial and axial loads.

[0004] However, although the aforementioned patent describes a roller bearing that "has both self-aligning function and can withstand large radial and axial loads by using the inner raceway corresponding to the small end of the spherical roller and the limiting step, and cooperating with the first and second sealing rings," existing double-row roller bearings lack an intuitive warning structure for uneven force distribution under off-center loading conditions, resulting in poor support stability of the shaft. Some structures may also obstruct the shaft's movement trajectory, affecting the operating accuracy of the equipment.

[0005] Therefore, a double-row roller bearing with an anti-eccentric loading mechanism is proposed to address the above problems. Summary of the Invention

[0006] To overcome the above deficiencies, this invention provides a double-row roller bearing with an anti-eccentric load mechanism, aiming to improve the problem that some existing double-row roller bearings lack an intuitive warning structure for uneven force distribution under eccentric load conditions, resulting in poor support stability of the shaft. Some structures may also obstruct the shaft's movement trajectory, affecting the operating accuracy of the equipment.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A double-row roller bearing with an anti-eccentric loading mechanism includes a protective housing, a plurality of sliding rods slidably connected inside the protective housing, a fixed plate on each sliding rod, two rotating plates at each end of the fixed plate, a connecting plate rotatably connected to the rotating plate, an elastic sheet on each pair of connecting plates, a limiting plate rotatably connected to the connecting plate, an arc-shaped plate rotatably connected to the outside of each pair of limiting plates, a plurality of balls rotatably connected inside the arc-shaped plate, and a stabilizing mechanism on the limiting plate. As a further description of the above technical solution: The stabilizing mechanism includes multiple long plates, and the limiting plate has a movable groove. One end of the long plate is movably connected to the movable groove inside the limiting plate. The other end of every two long plates is rotatably connected to a limiting arc plate. An elastic mechanism is rotatably connected to the outside of the limiting arc plate. As a further description of the above technical solution: The elastic mechanism includes multiple telescopic rods, with one end of each telescopic rod rotatably connected to the outside of a limiting arc plate. A fixed circular plate is fixedly connected to the outside of each telescopic rod, and a spring is sleeved on the outside of each telescopic rod. As a further description of the above technical solution: The protective shell has a shaft cover inside, a roller inside the shaft cover, an anti-deviation ring outside the roller, a partition ring outside the anti-deviation ring, a shaft collar cover outside the anti-deviation ring, and a connecting shaft inside the shaft collar cover. As a further description of the above technical solution: One end of the spring is fixedly connected to the inside of the protective shell, and the other end of the spring is fixedly connected to the outside of the fixed circular plate; As a further description of the above technical solution: The arc-shaped plate has a circular groove inside, and the ball is connected to the circular groove inside the arc-shaped plate for rotation. The outside of the ball is in contact with the outside of the connecting shaft. As a further description of the above technical solution: The protective shell has multiple limiting grooves inside, and the limiting plate is externally slidably connected to the internal limiting grooves of the protective shell. As a further description of the above technical solution: The protective shell has a sliding limiting groove inside, and the multiple structures connected to the rotating plate slide within the sliding limiting groove inside the protective shell.

[0008] The present invention has the following beneficial effects: In this invention, the sliding rod, arc plate, and ball bearings work together to support the connecting shaft without obstructing its movement trajectory. When the connecting shaft is subjected to uneven force, the sliding rod retracts, providing a direct warning of uneven force. The stabilizing mechanism composed of a long plate, spring, and telescopic rod enhances the support stability of the arc plate and ball bearings. The double-row roller structure composed of a shaft cover, rollers, and anti-eccentricity ring, together with the anti-eccentricity loading mechanism, ensures the stable operation of the connecting shaft under complex forces, improving bearing stability and service life. The multi-structure synergy achieves the beneficial effects of bearing anti-eccentricity loading, easy monitoring, and high stability. Attached Figure Description

[0009] Figure 1 This is a three-dimensional schematic diagram of a double-row roller bearing with an anti-eccentric loading mechanism proposed in this invention; Figure 2 This is a schematic diagram of the structure of a connecting shaft of a double-row roller bearing equipped with an anti-eccentric loading mechanism, as proposed in this invention. Figure 3 This is a schematic diagram of the roller structure of a double-row roller bearing with an anti-eccentric loading mechanism proposed in this invention; Figure 4 This is a schematic diagram of the structure of the balls in a double-row roller bearing with an anti-eccentric loading mechanism proposed in this invention. Figure 5 This is a schematic diagram of the structure of a limiting plate for a double-row roller bearing equipped with an anti-eccentric loading mechanism, as proposed in this invention. Figure 6 This is a schematic diagram of the structure of a spring for a double-row roller bearing equipped with an anti-eccentric loading mechanism, as proposed in this invention. Figure 7 This is a schematic diagram of the structure of an arc-shaped plate with an anti-eccentric load mechanism for a double-row roller bearing proposed in this invention; Figure 8 This is a schematic diagram of the structure of a fixed circular plate for a double-row roller bearing equipped with an anti-eccentric loading mechanism, as proposed in this invention.

[0010] Legend: 1. Protective shell; 2. Sliding rod; 3. Fixed plate; 4. Rotating plate; 5. Connecting plate; 6. Elastic sheet; 7. Limiting plate; 8. Arc plate; 9. Ball bearing; 10. Long plate; 11. Limiting arc plate; 12. Telescopic rod; 13. Fixed circular plate; 14. Spring; 15. Shaft cover; 16. Anti-deviation ring; 17. Roller; 18. Partition ring; 19. Shaft collar cover; 20. Connecting shaft. Detailed Implementation

[0011] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0012] Reference Figures 4 to 7This invention provides an embodiment of a double-row roller bearing with an anti-eccentric load mechanism, comprising a protective housing 1, providing installation space and external protection for the internal structures. An internal limiting groove restricts the sliding trajectory of a limiting plate 7, ensuring guidance during the sliding of multiple structures connected to the rotating plate 4. This limiting groove, in conjunction with the shaft cover 15, forms external protection, improving the overall stability of the bearing assembly. Multiple sliding rods 2 are slidably connected inside the protective housing 1. When the connecting shaft 20 experiences uneven force, these rods retract into the protective housing 1 along with the movement of the relevant structures, visually indicating the location of uneven force on the connecting shaft 20, thus providing a direct warning of uneven force. A fixing plate 3 is provided on the sliding rod 2. The fixed plate 3 is mounted on the sliding rod 2, providing a mounting base for the rotating plate 4 and assisting in transmitting structural movements when subjected to force. Two rotating plates 4 and two connecting plates 5 are respectively installed at both ends of the fixed plate 3. These rotating plates 4 rotate during the movement of the sliding rod 2 and other structures, driving the connecting plates 5 and other components to move, participating in structural linkage when forces are unevenly distributed. A sliding limit groove is provided inside the protective shell 1 to ensure the guidance of the multiple structures connected by the rotating plates 4 during sliding, making the sliding of these structures smoother. The multiple structures connected to the rotating plates 4 slide within the sliding limit groove inside the protective shell 1. Connecting plates 5 are rotatably connected to the rotating plates 4. Each pair of connecting plates 5... Elastic plates 6 are installed on the upper part to transmit force during structural movement. The elastic plates 6 assist in buffering the force. Elastic plates 6 are installed on every two connecting plates 5 to buffer the force and improve the structure's buffering performance under stress. A limit plate 7 is rotatably connected to the connecting plate 5, which rotatably connects the connecting plate 5 and the arc plate 8. When the arc plate 8 is subjected to pressure from the connecting shaft 20, it is driven to move. The internal movable groove provides movement space for the long plate 10 and is a key component connecting the arc plate 8 and the stabilizing mechanism. Multiple limit grooves are opened inside the protective shell 1 to limit the sliding trajectory of the limit plate 7, making the movement of the limit plate 7 more stable. The external sliding groove of the limit plate 7 is... The connecting shaft 20 is rotatably connected to the inner limiting groove of the protective shell 1. An arc-shaped plate 8 is rotatably connected to the outside of every two limiting plates 7, and multiple balls 9 are rotatably connected inside. They contact the outer wall of the connecting shaft 20 to support the connecting shaft 20. When the connecting shaft 20 is subjected to uneven force, it bears the pressure and transmits it to the limiting plates 7 and other structures. A circular groove is opened inside the arc-shaped plate 8. The balls 9 are rotatably connected to the circular groove inside the arc-shaped plate 8 and contact the outer wall of the connecting shaft 20. They rotate when the connecting shaft 20 is running, so as to support the connecting shaft 20 without hindering its movement trajectory. The outside of the balls 9 is in contact with the outside of the connecting shaft 20. Multiple balls 9 are rotatably connected inside the arc-shaped plate 8.

[0013] Reference Figures 5 to 8A stabilizing mechanism is provided on the limiting plate 7. The stabilizing mechanism includes multiple long plates 10, one end of which is movably connected to the movable groove of the limiting plate 7, and the other end is rotatably connected to the limiting arc plate 11. The long plates 10 adjust their positions with the movement of the limiting plate 7 and participate in the support adjustment of the stabilizing mechanism. The limiting plate 7 has a movable groove, which provides movable space for one end of the long plate 10, allowing the long plate 10 to adjust its position with the movement of the limiting plate 7. One end of the long plate 10 is movably connected to the movable groove inside the limiting plate 7. The other end of every two long plates 10 is rotatably connected to the limiting arc plate 11, and the outer side is rotatably connected to an elastic mechanism. The elastic mechanism adjusts the position with the long plate 10 and provides support for the long plate 10 and the limiting plate 7 under the action of the elastic mechanism, indirectly strengthening the support stability of the arc plate 8 and the ball bearing 9. The outer side of the limiting arc plate 11 is rotatably connected to an elastic mechanism, which includes multiple telescopic rods 12. One end of each telescopic rod 12 is rotatably connected to the outside of the limiting arc plate 11, causing telescopic movement and providing a structural basis for the elastic force adjustment of the elastic mechanism. One end of each telescopic rod 12 is rotatably connected to the outside of the limiting arc plate 11. A fixed circular plate 13 is fixedly connected to the outside of the telescopic rod 12. One end of the spring 14 is fixed to the outside of the spring 13 and moves with the telescopic rod 12, causing the spring 14 to generate elastic force. The spring 14 is sleeved on the outside of the telescopic rod 12. One end is fixed to the inside of the protective shell 1 and the other end is fixed to the outside of the fixed circular plate 13, generating elastic force to support the limiting arc plate 11, the long plate 10 and the limiting plate 7, and strengthening the support stability of the arc plate 8 and the ball 9 on the connecting shaft 20. One end of the spring 14 is fixedly connected to the inside of the protective shell 1 and the other end of the spring 14 is fixedly connected to the outside of the fixed circular plate 13.

[0014] Reference Figures 1 to 4 The protective housing 1 has a shaft cover 15 inside, which works with the protective housing 1 to form external protection. Inside the shaft cover 15 are components such as rollers 17 and anti-deviation rings 16, forming part of the double-row roller structure. The rollers 17 are arranged in an orderly manner inside the shaft cover 15, separated by the anti-deviation rings 16 and partition rings 18, and participate in supporting the rotation of the double-row roller structure. The anti-deviation rings 16 are located outside the rollers 17, separating them and maintaining their orderly arrangement, thus enhancing the double-row roller structure. To ensure stability, an isolation ring 18 is fitted around the anti-deviation ring 16, which is located outside the anti-deviation ring 16 to help the anti-deviation ring 16 separate the rollers 17 and further ensure the orderly arrangement of the rollers 17. A shaft collar cover 19 is provided outside the anti-deviation ring 16 to encapsulate the rollers 17, anti-deviation ring 16, isolation ring 18 and other components. It is an encapsulation component of a double-row roller structure. A connecting shaft 20 is provided inside the shaft collar cover 19, which is the support object of the bearing. The outer wall is in contact with the balls 9, rollers 17 and other components. During operation, stable rotation is achieved through the bearing, and it can withstand complex loads.

[0015] Working Principle: First, when the connecting shaft 20 starts operating, its outer wall will make close contact with the ball bearings 9 installed inside the multiple arc-shaped plates 8 inside the device. The ball bearings 9 will rotate flexibly inside the pre-cut circular grooves in the arc-shaped plates 8. This rotation method can effectively achieve stable support for the connecting shaft 20. At the same time, due to the rolling characteristics of the ball bearings 9, it will not obstruct the normal movement trajectory of the connecting shaft 20. If the connecting shaft 20 experiences uneven force during operation, the arc-shaped plate 8 corresponding to the area with greater force will bear greater pressure than other areas. Under this pressure, the arc-shaped plate 8 will further push the limit plate 7 connected to it to move. During the movement of the limit plate 7, it will drive the connected connecting plate 5, rotating plate 4 and other related structures to move synchronously. The movement of these structures will eventually cause the sliding rod 2 to retract towards the inside of the protective shell 1. By observing the retraction state of the sliding rod 2, the user can intuitively judge the specific location of uneven force on the connecting shaft 20. This design makes it easy for the user to grasp the current force situation of the entire device in a timely manner.

[0016] Meanwhile, as the aforementioned off-center load adjustment process proceeds, the stabilizing mechanism on the device also begins to gradually play its due role. One end of the long plate 10 in the stabilizing mechanism moves flexibly inside the movable groove opened in the limiting plate 7, while the other end remains rotatably connected to the limiting arc plate 11. As the limiting plate 7 moves, the long plate 10 and the limiting arc plate 11 will also adjust their positions accordingly to adapt to the current stress state. The elastic mechanism in the stabilizing mechanism will also move accordingly. The telescopic rod 12 in the elastic mechanism will extend and retract according to the stress state, and the spring 14 sleeved on the outside of the telescopic rod 12 will generate a certain elastic force due to the movement of the fixed circular plate 13. Since one end of the spring 14 is fixed inside the protective shell 1 and the other end is fixed outside the fixed circular plate 13, the generated elastic force can effectively support the limiting arc plate 11, the long plate 10, and the limiting plate 7. Through this support method, the support of the arc plate 8 and the ball bearing 9 on the connecting shaft 20 can be indirectly ensured to be more stable and reliable.

[0017] Furthermore, inside the protective housing 1, the shaft cover 15, rollers 17, anti-deviation ring 16, partition ring 18, and shaft collar cover 19 together form a double-row roller structure. This double-row roller structure works collaboratively according to existing mature technologies. Under the joint separation of the anti-deviation ring 16 and partition ring 18, the rollers 17 can always maintain an orderly arrangement. The shaft collar cover 19 effectively encapsulates these components that make up the double-row roller structure. The shaft cover 15 cooperates with the protective housing 1 to form the external protective structure of the device. This protective structure can further improve the overall stability of the entire bearing device. Moreover, this double-row roller structure works together with the aforementioned anti-deviation mechanism to ensure that the connecting shaft 20 can operate stably under various complex stress conditions.

[0018] During the entire operation of the bearing assembly, the pre-drilled limiting groove inside the protective shell 1 effectively restricts the sliding trajectory of the limiting plate 7. This restriction ensures smoother movement of the limiting plate 7 and prevents deviation. Simultaneously, the sliding limiting groove inside the protective shell 1 guarantees the guidance of multiple related structures connected by the rotating plate 4 during sliding, ensuring these structures slide in the correct direction. When the off-center load on the connecting shaft 20 changes, the extension and retraction of the sliding rod 2, the support and adjustment of the stabilizing mechanism, and the coordinated operation of the double-row roller structure continuously adapt to the changes in off-center load. These actions continuously provide stable support and off-center load protection for the connecting shaft 20, ensuring it remains in a stable operating state, ultimately achieving long-term reliable and efficient operation of the entire bearing assembly.

[0019] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is 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. Double row roller bearing provided with an anti-uneven loading mechanism, comprising a protective shell (1), characterized in that: The inside of the protective shell (1) is slidably connected with a plurality of sliding rods (2), the sliding rods (2) are provided with fixed plates (3), both ends of the fixed plates (3) are provided with two rotating plates (4), the rotating plates (4) are rotatably connected with connecting plates (5), every two connecting plates (5) are provided with elastic sheets (6), the connecting plates (5) are rotatably connected with limiting plates (7), every two limiting plates (7) are rotatably connected with arc-shaped plates (8) outside, the arc-shaped plates (8) are rotatably connected with a plurality of balls (9) inside, the limiting plates (7) are provided with stabilizing mechanisms.

2. A double row roller bearing provided with an anti- eccentric load mechanism according to claim 1, characterized in that: The stabilizing mechanism comprises a plurality of long plates (10), the limiting plates (7) are provided with movable grooves, one end of the long plates (10) is movably connected in the movable grooves inside the limiting plates (7), the other end of every two long plates (10) is rotatably connected with limiting arc-shaped plates (11), the limiting arc-shaped plates (11) are rotatably connected with elastic mechanisms outside.

3. A double row roller bearing provided with an anti- eccentric load mechanism according to claim 2, characterized in that: The elastic mechanism comprises a plurality of telescopic rods (12), the proximal ends of the telescopic rods (12) are rotatably connected with the limiting arc-shaped plates (11) outside respectively, the telescopic rods (12) are fixedly connected with fixed circular plates (13) outside, the telescopic rods (12) are provided with springs (14) outside.

4. A double row roller bearing provided with an anti- eccentric load mechanism according to claim 1, characterized in that: The inside of the protective shell (1) is provided with shaft covers (15), the inside of the shaft covers (15) is provided with rollers (17), the outside of the rollers (17) is provided with anti-deviation rings (16), the outside of the anti-deviation rings (16) is provided with partition rings (18), the outside of the anti-deviation rings (16) is provided with shaft ring covers (19), the inside of the shaft ring covers (19) is provided with connecting shafts (20).

5. A double row roller bearing provided with an anti- eccentric loading mechanism according to claim 3, characterized in that: One end of the spring (14) is fixedly connected with the inside of the protective shell (1), the other end of the spring (14) is fixedly connected with the outside of the fixed circular plate (13).

6. A double row roller bearing provided with an anti- eccentric loading mechanism according to claim 4, characterized in that: The inside of the arc-shaped plate (8) is provided with a circular groove, the balls (9) are rotatably connected in the circular groove inside the arc-shaped plate (8), the outside of the balls (9) is in contact with the outside of the connecting shaft (20).

7. A double row roller bearing provided with an anti- eccentric loading mechanism according to claim 3, characterized in that: The inside of the protective shell (1) is provided with a plurality of limiting grooves, the outside of the limiting plates (7) is slidably connected in the limiting grooves inside the protective shell (1).

8. A double row roller bearing provided with an anti- eccentric loading mechanism according to claim 1, characterized in that: The inside of the protective shell (1) is provided with sliding limiting grooves, a plurality of structures connected with the rotating plates (4) are slid in the sliding limiting grooves provided in the inside of the protective shell (1).

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