Combined bearing

Abstract

The utility model provides a combined bearing, which relates to the technical field of bearings and comprises an outer ring, an inner ring is arranged in the outer ring, a plurality of balls are arranged in the outer ring and positioned between the outer ring and the inner ring, protective devices are arranged on two sides of the outer ring, each protective device comprises two protective plates, and the protective plates are arranged on the outer ring. The two protection plates are located on the two sides of the outer ring correspondingly, preformed holes are formed in the surfaces of the protection plates, the protection plates are fixedly connected with limiting rods through the preformed holes, the surfaces of the limiting rods are slidably connected with two moving plates, one ends of the two moving plates are fixedly connected with triangular plates, and the arc surfaces of the limiting rods are sleeved with springs. Through the protection plates arranged on the protection device, the effect of protecting the balls between the outer ring and the inner ring is achieved, and the situation that the service life of the balls is affected due to the fact that impurities make contact with the balls is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of bearings, in particular to a combined bearing. Background Art

[0002] A bearing is an important component in contemporary mechanical equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy.

[0003] In the prior art, a bearing is composed of balls, an inner ring and an outer ring. The balls are located between the inner ring and the outer ring. When the bearing is in use, some impurities enter between the inner ring and the outer ring, thus affecting the rolling of the balls inside the bearing and reducing the service life of the bearing. Summary of the Utility Model

[0004] The utility model provides a combined bearing to solve the shortcomings existing in the prior art.

[0005] To achieve the above object, the utility model adopts the following technical scheme: A combined bearing includes an outer ring. An inner ring is arranged inside the outer ring. A plurality of balls are arranged inside the outer ring. The balls are located between the outer ring and the inner ring. Protective devices are arranged on both sides of the outer ring. The protective device includes two protective plates. The two protective plates are respectively located on both sides of the outer ring. Reserved holes are formed on the surfaces of the protective plates. The protective plates are fixedly connected with limiting rods through the reserved holes. Two moving plates are slidably connected to the surfaces of the limiting rods. Triangular plates are fixedly connected to one ends of the two moving plates. Springs are sleeved on the arc surfaces of the limiting rods. The two ends of the springs are respectively fixedly connected with the two moving plates. First clamping grooves and second clamping grooves are formed on the outer ring corresponding to the connecting plates. The size of the second clamping groove is larger than that of the first clamping groove. The second clamping groove is communicated with the first clamping groove.

[0006] The effects achieved by the above components are as follows: When the staff needs to install the protective plate, the staff moves the protective plate to approach the outer ring. The moving plates on the protective plate are aligned with the first clamping grooves. The inclined surfaces of the triangular plates extrude the inner walls of the first clamping grooves. At this time, the two moving plates approach each other, and the springs contract. When the triangular plates enter the second clamping grooves, under the action of the restoring elastic force of the springs, the two moving plates move away from each other, and one side of the triangular plates fits with the inside of the second clamping grooves, achieving the effect of fixing the protective plate. Through the protective plates arranged by the protective device, the effect of protecting the balls between the outer ring and the inner ring is achieved, avoiding the situation that impurities contact the balls and affecting the service life of the balls.

[0007] Preferably, a groove is formed on one side of the protective plate. A pull rod is fixedly connected to the protective plate through the groove.

[0008] The effects achieved by the above components are as follows: By means of the pull rod in the groove, it is convenient for the staff to move the protection plate, which brings convenience to the staff.

[0009] Preferably, a pull plate is fixedly connected to the side of the moving plate away from the outer ring, and anti-slip lines are provided on the surface of the pull plate.

[0010] The effects achieved by the above components are as follows: By setting the pull plate, it is convenient for the staff to move the moving plate, which brings convenience to the staff for disassembling the protection plate.

[0011] Preferably, a plurality of positioning rods are fixedly connected to both sides of the outer ring. Positioning holes are provided on the protection plate corresponding to the positioning rods, and the sizes of the positioning rods are adapted to the sizes of the positioning holes.

[0012] The effects achieved by the above components are as follows: By inserting the positioning rods into the positioning holes of the protection plate, the effect of restricting the moving direction of the protection plate is achieved, and rotation between the protection plate and the outer ring is avoided.

[0013] Preferably, a pointed protrusion is fixedly connected to one end of the positioning rod, and the tip of the pointed protrusion is away from the positioning rod.

[0014] The effects achieved by the above components are as follows: By setting the pointed protrusion, it is convenient for the positioning rod to be inserted into the positioning hole of the protection plate, which brings convenience to the staff.

[0015] Preferably, a lubricating device is provided on the arc surface of the outer ring. The lubricating device includes an oil inlet hole, which is opened on the arc surface of the outer ring. An oil storage groove is provided on the outer ring corresponding to the oil inlet hole, and the oil storage groove is communicated with the oil inlet hole. An annular groove is opened inside the outer ring, and the annular groove is communicated with the oil storage groove. Two symmetrically arranged pads are fixedly connected to the outer ring by means of the oil storage groove. One side of the pad is rotatably connected to a rotating rod. A cover plate is fixedly connected to the arc surface of the rotating rod, and the size of the cover plate is larger than the size of the oil inlet hole. A coil spring is sleeved on the arc surface of the rotating rod, and both ends of the coil spring are fixedly connected to the cover plate and the pad respectively.

[0016] The effects achieved by the above components are as follows: When lubrication of the bearing is required, the staff inserts the oil injection needle of the lubricating oil through the oil inlet hole. The oil injection needle presses against the cover plate, and the cover plate drives the rotating rod to rotate. The coil spring on the backing plate deforms, and the cover plate releases the coverage of the oil inlet hole. At this time, the lubricating oil enters the oil storage tank. Finally, the staff removes the oil injection needle from the oil storage tank. Under the action of the restoring elastic force of the coil spring, the cover plate blocks the oil inlet hole to prevent the lubricating oil from flowing out of the oil inlet hole. When the rotating shaft is in use, the balls rotate between the outer ring and the inner ring, and the lubricating oil in the oil storage tank flows into the annular groove, and the lubricating oil in the annular groove lubricates the balls. Through the lubrication device, the effect of lubricating the balls is achieved, improving the service life of the balls. The provided cover plate covers the oil inlet hole to prevent the lubricating oil from flowing out of the oil inlet hole.

[0017] Preferably, a sealing ring is fixedly connected to the side of the cover plate close to the oil inlet hole, and the sealing ring is a rubber ring.

[0018] The effects achieved by the above components are as follows: By setting the sealing ring, the effect of sealing the gap between the cover plate and the inner wall of the oil storage tank is achieved, preventing the lubricating oil from flowing out through the gap.

[0019] In summary, the beneficial effects of the present utility model are as follows:

[0020] When the staff needs to install the protection plate, the staff moves the protection plate and brings the protection plate close to the outer ring. The moving plate on the protection plate aligns with the first card slot. The inclined surface of the triangular plate presses against the inner wall of the first card slot. At this time, the two moving plates approach each other, and the spring contracts. When the triangular plate enters the second card slot, under the action of the restoring elastic force of the spring, the two moving plates move away from each other, and one side of the triangular plate fits with the inside of the second card slot, achieving the effect of fixing the protection plate. Through the protection plate provided by the protection device, the effect of protecting the balls between the outer ring and the inner ring is achieved, preventing impurities from contacting the balls and thus affecting the service life of the balls. Brief Description of the Drawings

[0021] Figure 1 is a three-dimensional structural diagram of the present utility model;

[0022] Figure 2 is of the present utility model Figure 1 exploded view;

[0023] Figure 3 is a three-dimensional structural diagram of the outer ring of the present utility model;

[0024] Figure 4 is of the present utility model Figure 3 enlarged view at A;

[0025] Figure 5 is a three-dimensional structural diagram of the protection plate of the present utility model;

[0026] Figure 6 Schematic diagram of the three-dimensional structure of the parts in the reserved hole of the present utility model;

[0027] Figure 7 Cross-sectional view of the outer ring of the present utility model;

[0028] Figure 8 Schematic diagram of the three-dimensional structure at the cover plate of the present utility model.

[0029] Legend: 1. Outer ring; 2. Protection device; 21. Protection plate; 22. Moving plate; 23. Triangular plate; 24. First card slot; 25. Second card slot; 26. Spring; 27. Limiting rod; 28. Pulling plate; 29. Groove; 210. Pulling rod; 211. Positioning hole; 212. Positioning rod; 213. Sharp protrusion; 3. Lubrication device; 31. Oil inlet hole; 32. Oil storage tank; 33. Annular groove; 34. Pad; 35. Rotating rod; 36. Cover plate; 37. Torsion spring; 38. Sealing ring; 4. Inner ring; 5. Ball. Detailed implementation manners

[0030] Referring to Figure 1-8 As shown, this embodiment discloses a combined bearing, including an outer ring 1. An inner ring 4 is arranged inside the outer ring 1. A plurality of balls 5 are arranged inside the outer ring 1. The balls 5 are located between the outer ring 1 and the inner ring 4. Protection devices 2 are arranged on both sides of the outer ring 1, and a lubrication device 3 is arranged on the arc surface of the outer ring 1.

[0031] Referring to Figure 1-8As shown in the figure, the protection device 2 includes two protection plates 21, which are respectively located on both sides of the outer ring 1. Reserved holes are provided on the surface of the protection plate 21. The protection plate 21 is fixedly connected with a limiting rod 27 through the reserved holes. Two moving plates 22 are slidably connected to the surface of the limiting rod 27. Triangular plates 23 are fixedly connected to one ends of the two moving plates 22. A spring 26 is sleeved on the arc surface of the limiting rod 27, and both ends of the spring 26 are fixedly connected with the two moving plates 22 respectively. The outer ring 1 is provided with a first card slot 24 and a second card slot 25 corresponding to the connecting plate. The size of the second card slot 25 is larger than that of the first card slot 24, and the second card slot 25 is communicated with the first card slot 24. When the staff needs to install the protection plate 21, the staff moves the protection plate 21 to approach the outer ring 1. The moving plate 22 on the protection plate 21 is aligned with the first card slot 24. The inclined surface of the triangular plate 23 presses against the inner wall of the first card slot 24. At this time, the two moving plates 22 approach each other, and the spring 26 contracts. When the triangular plate 23 enters the second card slot 25, under the action of the reset elastic force of the spring 26, the two moving plates 22 move away from each other, and one side of the triangular plate 23 fits with the inside of the second card slot 25, achieving the effect of fixing the protection plate 21. Through the protection plate 21 provided by the protection device 2, the effect of protecting the balls 5 between the outer ring 1 and the inner ring 4 is achieved, avoiding the situation that impurities contact the balls 5 and thus affecting the service life of the balls 5.

[0032] Refer to Figure 1-8 As shown in the figure, a groove 29 is provided on one side of the protection plate 21. The protection plate 21 is fixedly connected with a pull rod 210 through the groove 29. Through the pull rod 210 in the groove 29, the effect of facilitating the staff to move the protection plate 21 is achieved, bringing convenience to the staff. A pull plate 28 is fixedly connected to the side of the moving plate 22 away from the outer ring 1, and anti-slip patterns are provided on the surface of the pull plate 28. By setting the pull plate 28, the effect of facilitating the staff to move the moving plate 22 is achieved, bringing convenience to the staff to disassemble the protection plate 21. A plurality of positioning rods 212 are fixedly connected to both sides of the outer ring 1. Positioning holes 211 are provided on the protection plate 21 corresponding to the positioning rods 212. The size of the positioning rods 212 is adapted to the size of the positioning holes 211. By inserting the positioning rods 212 into the positioning holes 211 of the protection plate 21, the effect of restricting the moving direction of the protection plate 21 is achieved, avoiding rotation between the protection plate 21 and the outer ring 1. A pointed protrusion 213 is fixedly connected to one end of the positioning rod 212, and the tip of the pointed protrusion 213 is far from the positioning rod 212. By setting the pointed protrusion 213, it is convenient for the positioning rod 212 to be inserted into the positioning hole 211 of the protection plate 21, bringing convenience to the staff.

[0033] Refer to Figure 1-8As shown in the figure, the lubrication device 3 includes an oil inlet hole 31 which is opened on the arc surface of the outer ring 1. A storage oil groove 32 is provided on the outer ring 1 corresponding to the oil inlet hole 31. The storage oil groove 32 is communicated with the oil inlet hole 31. An annular groove 33 is opened inside the outer ring 1. The annular groove 33 is communicated with the storage oil groove 32. The outer ring 1 is fixedly connected with two symmetrically arranged cushion plates 34 by means of the storage oil groove 32. One side of the cushion plate 34 is rotatably connected with a rotating rod 35. A cover plate 36 is fixedly connected to the arc surface of the rotating rod 35. The size of the cover plate 36 is larger than that of the oil inlet hole 31. A coil spring 37 is sleeved on the arc surface of the rotating rod 35. The two ends of the coil spring 37 are respectively fixedly connected with the cover plate 36 and the cushion plate 34. When lubricating the bearing is needed, the staff passes the oil injection needle of the lubricating oil through the oil inlet hole 31. The oil injection needle presses the cover plate 36, and the cover plate 36 drives the rotating rod 35 to rotate. The coil spring 37 on the cushion plate 34 deforms. The cover plate 36 releases the covering of the oil inlet hole 31. At this time, the lubricating oil enters the storage oil groove 32. Finally, the staff takes out the oil injection needle from the storage oil groove 32. Under the action of the reset elastic force of the coil spring 37, the cover plate 36 blocks the oil inlet hole 31 to prevent the lubricating oil from flowing out of the oil inlet hole 31. When the rotating shaft is in use, the ball 5 rotates between the outer ring 1 and the inner ring 4. The lubricating oil in the storage oil groove 32 flows into the annular groove 33, and the lubricating oil in the annular groove 33 lubricates the ball 5. Through the lubrication device 3, the effect of lubricating the ball 5 is achieved, and the service life of the ball 5 is improved. The arranged cover plate 36 covers the oil inlet hole 31 to prevent the lubricating oil from flowing out of the oil inlet hole 31.

[0034] Refer to Figure 1-8 As shown in the figure, a sealing ring 38 is fixedly connected to the side of the cover plate 36 close to the oil inlet hole 31. The sealing ring 38 is a rubber ring. By arranging the sealing ring 38, the effect of sealing the gap between the cover plate 36 and the inner wall of the storage oil groove 32 is achieved, and the lubricating oil is prevented from flowing out through the gap.

[0035] Working principle: When the staff needs to install the protection plate (21), the staff moves the protection plate (21) through the pull rod (210) in the groove (29), brings the protection plate (21) close to the outer ring (1). The moving plate (22) on the protection plate (21) is aligned with the first clamping groove (24). The inclined surface of the triangular plate (23) presses the inner wall of the first clamping groove (24). At this time, the two moving plates (22) approach each other, and the spring (26) contracts. When the triangular plate (23) enters the second clamping groove (25), under the action of the reset elastic force of the spring (26), the two moving plates (22) move away from each other, and one side of the triangular plate (23) fits with the inside of the second clamping groove (25), achieving the effect of fixing the protection plate (21). Through the protection plate (21) provided by the protection device (2), the effect of protecting the ball (5) between the outer ring (1) and the inner ring (4) is achieved, preventing impurities from contacting the ball (5) and thus affecting the service life of the ball (5).

[0036] When lubrication of the bearing is required, the staff passes the oil injection needle of the lubricating oil through the oil inlet hole (31). The oil injection needle presses the cover plate (36), and the cover plate (36) drives the rotating rod (35) to rotate. The coil spring (37) on the backing plate (34) deforms, and the cover plate (36) releases the coverage of the oil inlet hole (31). At this time, the lubricating oil enters the oil storage tank (32). Finally, the staff removes the oil injection needle from the oil storage tank (32). Under the action of the restoring elastic force of the coil spring (37), the cover plate (36) blocks the oil inlet hole (31) with the help of the sealing ring (38) to prevent the lubricating oil from flowing out of the oil inlet hole (31). When the rotating shaft is in use, the ball (5) rotates between the outer ring (1) and the inner ring (4). The lubricating oil in the oil storage tank (32) flows into the annular groove (33), and the lubricating oil in the annular groove (33) lubricates the ball (5). Through the lubricating device (3), the effect of lubricating the ball (5) is achieved, and the service life of the ball (5) is improved. The arranged cover plate (36) covers the oil inlet hole (31) to prevent the lubricating oil from flowing out of the oil inlet hole (31).

Claims

1. A combined bearing, comprising an outer ring (1), characterized in that: An inner ring (4) is arranged inside the outer ring (1), and a plurality of balls (5) are arranged inside the outer ring (1), and the balls (5) are located between the outer ring (1) and the inner ring (4). Protective devices (2) are provided on both sides of the outer ring (1), and the protective devices (2) include two protective plates (21), and the two protective plates (21) are respectively located on both sides of the outer ring (1). Pre-set holes are opened on the surfaces of the protective plates (21), and the protective plates (21) are fixedly connected to the limit rods (27) by means of the pre-set holes. The limit rods (27) are provided with a plurality of balls (5) inside the outer ring (1), and the limit rods (27) are fixedly connected to the limit rods (27). The surface of the outer ring (1) is slidably connected to two movable plates (22), one end of each of the two movable plates (22) is fixedly connected to a triangular plate (23), the arc surface of the limit rod (27) is sleeved with a spring (26), the two ends of the spring (26) are respectively fixedly connected to the two movable plates (22), and the outer ring (1) is provided with a first card slot (24) and a second card slot (25) at a position corresponding to the connecting plate, the size of the second card slot (25) is larger than the size of the first card slot (24), and the second card slot (25) is connected to the first card slot (24).

2. A combined bearing according to claim 1, characterized in that: A groove (29) is provided on one side of the protective plate (21), and the protective plate (21) is fixedly connected to a pull rod (210) by means of the groove (29).

3. A combined bearing according to claim 1, characterized in that: A pull plate (28) is fixedly connected to a side of the movable plate (22) away from the outer ring (1), and a surface of the pull plate (28) is provided with anti-slip grooves.

4. A combined bearing according to claim 1, characterized in that: A plurality of positioning rods (212) are fixedly connected to both sides of the outer ring (1), and positioning holes (211) are provided on the protective plate (21) corresponding to the positioning rods (212), and the size of the positioning rods (212) matches the size of the positioning holes (211).

5. A combined bearing according to claim 4, characterized in that: One end of the positioning rod (212) is fixedly connected to a pointed protrusion (213), and the tip of the pointed protrusion (213) is away from the positioning rod (212).

6. A combined bearing according to claim 1, characterized in that: The arc surface of the outer ring (1) is provided with a lubricating device (3), the lubricating device (3) comprising an oil inlet hole (31), the oil inlet hole (31) being provided on the arc surface of the outer ring (1), an oil storage groove (32) being provided on the outer ring (1) at a position corresponding to the oil inlet hole (31), the oil storage groove (32) being connected to the oil inlet hole (31), an annular groove (33) being provided inside the outer ring (1), the annular groove (33) being connected to the oil storage groove (32), the outer ring (1) Two mutually symmetrical pads (34) are fixedly connected with the oil storage tank (32), one side of the pad (34) is rotatably connected to a rotating rod (35), the arc surface of the rotating rod (35) is fixedly connected to a cover plate (36), the size of the cover plate (36) is larger than the size of the oil inlet hole (31), the arc surface of the rotating rod (35) is sleeved with a coil spring (37), and the two ends of the coil spring (37) are respectively fixedly connected to the cover plate (36) and the pad (34).

7. A combined bearing according to claim 6, characterized in that: A sealing ring (38) is fixedly connected to one side of the cover plate (36) close to the oil inlet hole (31), and the sealing ring (38) is a rubber ring.

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