A seated tapered roller bearing

Abstract

The application relates to a seated conical roller bearing which comprises an inner ring, a bearing seat, a first outer ring, a second outer ring, a first retainer, a second retainer and a locking ring, a first mounting groove and a second mounting groove are arranged on the outer wall of the inner ring, a plurality of conical rollers are respectively arranged in the first mounting groove and the second mounting groove, and the first retainer is arranged on the conical rollers in the first mounting groove. The seated conical roller bearing has the advantages that since the locking ring is in threaded connection with the bearing seat, the second outer ring can be axially moved when the locking ring is rotated, axial clearance can be adjusted, the radial clearance of the conical roller bearing can be changed at the same time, the production and installation difficulty of the conical roller bearing can be effectively reduced, the arc-shaped rubber plate can abut against and push the conical rollers to be fixed to the second fixed ring, and the conical rollers can be stably arranged on the first retainer.

Description

Technical Field

[0001] This invention belongs to the field of bearing technology, specifically relating to a mounted tapered roller bearing. Background Technology

[0002] The installation and use of tapered roller bearings typically involves machining the mounting position within the equipment body. This requires the bearing user to possess relevant bearing knowledge and installation skills to ensure the bearing's required precision and lifespan. However, paired tapered roller bearings demand high dimensional accuracy and require high-precision inner and outer spacers, resulting in higher costs for both installation and production. Consequently, existing tapered roller bearings typically have pre-set clearances, making it difficult to adjust the clearance according to operating conditions. Furthermore, the current installation method involves placing the inner ring on a cage, then lifting the cage to raise the tapered rollers. If the cage touches the tapered roller shaft during this lifting process, it may cause the shaft to loosen or detach, making installation difficult. Summary of the Invention

[0003] In view of the shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a mounted tapered roller bearing that can adjust the clearance according to the working conditions, and the tapered roller shaft can be stably placed on the cage during the installation process.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a mounted tapered roller bearing, comprising an inner ring, a bearing housing, a first outer ring, a second outer ring, a first cage, a second cage, and a locking ring. The outer wall of the inner ring is provided with a first mounting groove and a second mounting groove. Multiple tapered rollers are respectively mounted on the first mounting groove and the second mounting groove. The first cage is placed on the tapered rollers in the first mounting groove, and the second cage is placed on the tapered rollers in the second mounting groove. Both the first and second cages include a first retaining ring, a second retaining ring, and multiple connecting rods. The diameter of the first retaining ring is smaller than that of the second retaining ring. The multiple connecting rods are fixedly mounted on the first retaining ring. A retaining groove for preventing tapered rollers is formed between a first fixed ring and a second fixed ring, and between adjacent connecting rods. An arc-shaped resin plate is installed on the side of the first fixed ring away from the second fixed ring. Both the first and second mounting grooves are provided with protrusions that abut against the arc-shaped resin plate. The first outer ring is fitted onto the tapered rollers of the first cage, and the second outer ring is fitted onto the tapered rollers of the second cage. The bearing housing is fitted onto the first and second outer rings. The bearing housing is provided with a limiting protrusion that restricts the sliding of the first outer ring, and the bearing housing is provided with an internal thread on the side away from the limiting protrusion. The locking ring is threadedly connected to the internal thread and abuts against the second outer ring.

[0005] The inner walls of the first outer ring and the second outer ring are both conical structures. The inner diameter of the inner side of the first outer ring is larger than the inner diameter of the outer side of the first outer ring, and the inner diameter of the inner side of the second outer ring is larger than the inner diameter of the outer side of the second outer ring.

[0006] There is a gap between the first outer ring and the second outer ring to form an oil injection channel, and the bearing housing is provided with an oil injection head that communicates with the oil injection channel.

[0007] It also includes a first seal and a second seal, which are symmetrically located within the bearing housing. The first seal is disposed between the inner ring and the bearing housing, and the second seal is located between the locking ring and the inner ring.

[0008] Both the first and second seals are composed of metal parts and multiple rubber rings.

[0009] It also includes two annular limiting members, which are symmetrically sleeved on both ends of the inner ring. Each annular limiting member is provided with a set screw, and the inner ring has a screw hole in the radial direction that mates with the set screw.

[0010] Connecting seats are symmetrically installed on both sides of the bearing housing. Each connecting seat has a through hole and a sliding groove inside the through hole. A positioning ring is slidably installed in the sliding groove. The inner diameter of the positioning ring is smaller than the diameter of the through hole. A fixing bolt is rotatably installed inside the positioning ring.

[0011] The positioning ring is provided with self-locking components above and below it. The self-locking components include a hollow truncated cone fixing ring and an abutment ring integrated on the outer ring of the hollow truncated cone fixing ring. The hollow truncated cone fixing ring is located in the through hole, and a rubber tube is provided on the top of the hollow truncated cone fixing ring located above the positioning ring. The fixing bolt is rotated and placed inside the hollow truncated cone fixing ring and the rubber tube. The rubber tube is slidably placed in the through hole, and the top of the rubber tube protrudes from the top of the connecting seat.

[0012] The top of the rubber tube is equipped with double-layer anti-loosening washers.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a mounted tapered roller bearing. Since the locking ring and the bearing housing are threadedly fitted, rotating the locking ring allows the second outer ring to move axially, thereby adjusting the axial clearance and simultaneously changing the radial clearance of the tapered roller bearing. This satisfies the clearance adjustment requirements under different working conditions and effectively reduces the production and installation difficulty of the tapered roller bearing. Furthermore, the arc-shaped rubber plate can push and press the tapered roller against the second fixed ring to secure it, thus ensuring that the tapered roller is stably placed on the first cage.

[0014] 2. The present invention provides a mounted tapered roller bearing, which can be fixedly installed in the desired position in the bearing housing by means of a connecting seat and fixing bolts. A positioning ring is slidably provided in the through hole. In some required installations, there may be slight deviations in the position of the rotating hole. These deviations can be accommodated by adjusting the position of the fixing bolts by moving the positioning ring, thereby ensuring that the position of the bearing housing remains unchanged.

[0015] 3. In the present invention, a mounted tapered roller bearing, during the tightening of the fixing bolt, pushes the rubber tube, which in turn pushes the hollow fixed ring of the frustum downwards. This pushes the hollow fixed ring of the frustum upwards to abut against the sliding groove and the positioning ring. As the fixing bolt continues to move downwards, the rubber tube continues to push, causing the positioning ring to move downwards. This pushes the hollow fixed ring of the frustum below the positioning ring, which in turn pushes the abutment ring upwards to abut against the sliding groove and the positioning ring, thus fixing the positioning ring in place. Double-layer anti-loosening washers are placed between the connecting seat and the nut of the fixing bolt to prevent the fixing bolt from loosening. Attached Figure Description

[0016] Figure 1 This is an exploded structural diagram of the tapered roller bearing of the present invention; Figure 2 This is a schematic diagram of the tapered roller bearing of the present invention; Figure 3 This is a schematic cross-sectional view of the tapered roller bearing of the present invention. Figure 4 This is a cross-sectional structural diagram of the connector of the present invention; Figure 5 This is a schematic diagram of the structure of the first cage of the present invention; Figure 6 This is a cross-sectional structural diagram of the first cage of the present invention.

[0017] The markings in the diagram are: 1. Inner ring; 2. Bearing housing; 3. First outer ring; 4. Second outer ring; 5. First cage; 6. Second cage; 7. Locking ring; 8. First mounting groove; 9. Second mounting groove; 10. Tapered roller; 11. First fixing ring; 12. Second fixing ring; 13. Connecting rod; 14. Arc-shaped resin plate; 15. Protrusion; 16. Limiting protrusion ring; 17. Oil injection channel; 18. Oil injection head; 19. First seal; 20. Second seal; 21. Annular limiting element; 22. Connecting seat; 23. Through hole; 24. Sliding groove; 25. Positioning ring; 26. Fixing bolt; 27. Hollow truncated cone fixing ring; 28. Abutment ring; 29. ​​Rubber tube; 30. Double-layer anti-loosening washer. Detailed Implementation

[0018] To make the above features and advantages of the present invention more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings for detailed explanation.

[0019] like Figures 1-6As shown, this embodiment provides a mounted tapered roller bearing, including an inner ring 1, a bearing housing 2, a first outer ring 3, a second outer ring 4, a first cage 5, a second cage 6, and a locking ring 7. The outer wall of the inner ring 1 is provided with a first mounting groove 8 and a second mounting groove 9. Multiple tapered rollers 10 are respectively mounted on the first mounting groove 8 and the second mounting groove 9. The first cage 5 is placed on the tapered rollers 10 in the first mounting groove 8, and the second cage 6 is placed on the tapered rollers 10 in the second mounting groove 9. Both the first cage 5 and the second cage 6 include a first retaining ring 11, a second retaining ring 12, and multiple connecting rods 13. The diameter of the first retaining ring 11 is smaller than that of the second retaining ring 12. The multiple connecting rods 13 are fixedly installed between the first retaining ring 11 and the second retaining ring 12, and retaining grooves are formed between adjacent connecting rods 13 to prevent the tapered rollers 10 from moving. An arc-shaped resin plate 14 is installed on the side of the first retaining ring 11 away from the second retaining ring 12. Both the first mounting groove 8 and the second mounting groove 9 are provided with grooves for connecting the arc-shaped resin plate. The protrusion 15 of the tapered roller 10 abuts against one side of the tapered roller 10 when the tapered roller 10 is placed on the first retainer 5 and not installed. The other side of the tapered roller 10 is then fixed to the second retaining ring 12 by the pushing force of the protrusion 14, thus ensuring that the tapered roller 10 is stably placed on the first retainer 5. The second retainer 6 operates on the same principle. After the tapered roller 10 is assembled, the protrusion 15 obstructs the protrusion 14, causing it to move away. The bottom of the tapered roller 10 is then fitted onto the protrusion 15 to form a seal. The first outer ring 3 is fitted onto the tapered roller 10 of the first cage 5, and the second outer ring 4 is fitted onto the tapered roller 10 of the second cage 6. The bearing housing 2 is fitted onto the first outer ring 3 and the second outer ring 4. The bearing housing 2 is provided with a limiting protrusion 16 to restrict the sliding of the first outer ring 3, and the bearing housing 2 is provided with an internal thread on the side away from the limiting protrusion 16. The locking ring 7 is threadedly connected to the internal thread and abuts against the second outer ring 4. Specifically, the inner wall of the first outer ring 3 and the inner wall of the second outer ring 4 are both tapered structures. The inner diameter of the inner side of the first outer ring 3 is larger than the inner diameter of the outer side of the first outer ring 3, and the inner diameter of the inner side of the second outer ring 4 is larger than the inner diameter of the outer side of the second outer ring 4.During installation, first place the first cage 5 and the tapered rollers 10 into the first mounting groove 8 of the inner ring 1 and press the first cage 5 together. Then place the second cage 6 and the tapered rollers 10 into the second mounting groove 9, and fit the first outer ring 3 onto the tapered rollers 10 of the first cage 5. Next, push the end of the inner ring 1 with the first outer ring 3 into the bearing housing 2. Then, push the second outer ring 4 from the second end of the bearing housing 2 into the tapered rollers 10 fitted onto the second cage 6. Finally, tighten the locking ring 7 to prevent the second outer ring 4 from coming off the second end of the bearing housing 2. The bearing housing 2 has a threaded fit. Therefore, when the locking ring 7 is rotated, the second outer ring 4 can move axially, thereby adjusting the axial clearance and simultaneously changing the radial clearance of the tapered roller bearing 10. This allows for clearance adjustment under different working conditions and effectively reduces the manufacturing and installation difficulty of the tapered roller bearing 10. Furthermore, the use of a split double outer ring means that the tapered roller bearing 10 can not only bear a large axial load but also a high radial load. It also eliminates the influence of the press-fit seal ring on the bearing accuracy, effectively reducing the manufacturing and assembly difficulty of the tapered roller bearing 10.

[0020] Furthermore, a gap exists between the first outer ring 3 and the second outer ring 4 to form an oil injection channel 17, and an oil injection head 18 communicating with the oil injection channel 17 is provided on the bearing housing 2. Lubricating oil can be replenished through the oil injection head 18, and the lubricating oil flows through the oil injection channel 17 to the first mounting groove 8 and the second mounting groove 9 on both sides.

[0021] Furthermore, it also includes a first seal 19 and a second seal 20, which are symmetrically located within the bearing housing 2. The first seal 19 is positioned between the inner ring 1 and the bearing housing 2, and the second seal 20 is positioned between the locking ring 7 and the inner ring 1. Specifically, both the first seal 19 and the second seal 20 are composed of metal parts and multiple rubber rings. This further improves the sealing performance, further prevents external dust from entering the interior of the tapered roller bearing 10, ensures the cleanliness of the interior of the tapered roller bearing 10, and further extends the service life of the tapered roller bearing 10.

[0022] Furthermore, it also includes two annular limiting members 21, which are symmetrically sleeved on both ends of the inner ring 1. Each annular limiting member 21 is equipped with a set screw, and the inner ring 1 has radially opened threaded holes that mate with the set screws. By providing limiting members at both ends of the inner ring 1, the axial force on the tapered roller bearing 10 can be further enhanced, thus enabling the tapered roller bearing 10 to bear larger axial loads.

[0023] Furthermore, connecting seats 22 are symmetrically installed on both sides of the bearing housing 2. Each connecting seat 22 has a through hole 23, and inside the through hole 23 is a sliding groove 24. A positioning ring 25 is slidably installed within the sliding groove 24. The inner diameter of the positioning ring 25 is smaller than the diameter of the through hole 23, and a fixing bolt 26 is rotatably mounted within the positioning ring 25. The bearing housing 2 can be fixedly installed in the desired position by the connecting seat 22 and the fixing bolt 26. Since the positioning ring 25 slidably installs in the through hole 23, slight deviations may occur in the position of the rotating hole during some required installations. These deviations can be accommodated by adjusting the position of the fixing bolt 26 by moving the positioning ring 25, thereby ensuring that the bearing housing 2 remains stationary.

[0024] Furthermore, self-locking components are provided above and below the positioning ring 25, each including a truncated cone hollow fixing ring 27 and an integrated abutment ring 28 on the outer ring of the truncated cone hollow fixing ring 27. The truncated cone hollow fixing ring 27 is located inside the through hole 23, and a rubber tube 29 is provided on the top of the truncated cone hollow fixing ring 27 located above the positioning ring 25. The fixing bolt 26 is rotatably placed inside the truncated cone hollow fixing ring 27 and the rubber tube 29. The rubber tube 29 is slidably placed inside the through hole 23, and the top of the rubber tube 29 protrudes from the top of the connecting seat 22. Specifically, a double-layer anti-loosening washer 30 is provided on the top of the rubber tube 29. During the tightening of the fixing bolt 26, the rubber tube 29 is pushed, which in turn pushes the hollow truncated ring 27 downward. This pushes the abutment ring 28 upward to abut against the sliding groove 24 and the positioning ring 25. As the fixing bolt 26 continues to move downward, the rubber tube 29 continues to push, which causes the positioning ring 25 to move downward. This pushes the hollow truncated ring 27 below the positioning ring 25, which in turn pushes the abutment ring 28 upward to abut against the sliding groove 24 and the positioning ring 25, thus fixing the positioning ring 25 in place. Double-layer anti-loosening washers 30 are placed between the connecting seat 22 and the nut of the fixing bolt 26 to prevent the fixing bolt 26 from loosening.

[0025] The foregoing has shown and described the basic principles and main features of the present invention, as well as its advantages. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope. All such changes and modifications fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

Claims

1. A mounted tapered roller bearing, characterized in that: The bearing includes an inner ring, a bearing housing, a first outer ring, a second outer ring, a first cage, a second cage, and a locking ring. The outer wall of the inner ring has a first mounting groove and a second mounting groove. Multiple tapered rollers are respectively mounted in the first and second mounting grooves. The first cage is placed on the tapered rollers in the first mounting groove, and the second cage is placed on the tapered rollers in the second mounting groove. Both the first and second cages include a first fixed ring, a second fixed ring, and multiple connecting rods. The diameter of the first fixed ring is smaller than that of the second fixed ring. The multiple connecting rods are fixedly installed between the first and second fixed rings, adjacent to each other... A retaining groove is formed between the connecting rods to prevent the tapered rollers from sliding. An arc-shaped resin plate is installed on the side of the first retaining ring away from the second retaining ring. Both the first and second mounting grooves are provided with protrusions that abut against the arc-shaped resin plate. The first outer ring is fitted onto the tapered rollers of the first retainer, and the second outer ring is fitted onto the tapered rollers of the second retainer. The bearing seat is fitted onto the first and second outer rings. The bearing seat is provided with a limiting protrusion that restricts the sliding of the first outer ring, and the bearing seat is provided with an internal thread on the side away from the limiting protrusion. The locking ring is threadedly connected to the internal thread and abuts against the second outer ring. Connecting seats are symmetrically installed on both sides of the bearing housing. The connecting seats are provided with through holes. The inside of the through holes is provided with sliding grooves. A positioning ring is slidably installed in the sliding grooves. The inner diameter of the positioning ring is smaller than the diameter of the through holes. A fixing bolt is rotatably installed inside the positioning ring. The positioning ring is provided with self-locking components above and below it. The self-locking components include a hollow truncated cone fixing ring and an abutment ring integrated on the outer ring of the hollow truncated cone fixing ring. The hollow truncated cone fixing ring is located in the through hole, and a rubber tube is provided on the top of the hollow truncated cone fixing ring located above the positioning ring. The fixing bolt is rotated and placed in the hollow truncated cone fixing ring and the rubber tube. The rubber tube is slidably placed in the through hole, and the top of the rubber tube protrudes from the top of the connecting seat. The top of the rubber tube is equipped with double-layer anti-loosening washers.

2. A mounted tapered roller bearing according to claim 1, characterized in that: The inner walls of the first outer ring and the second outer ring are both conical structures. The inner diameter of the inner side of the first outer ring is larger than the inner diameter of the outer side of the first outer ring, and the inner diameter of the inner side of the second outer ring is larger than the inner diameter of the outer side of the second outer ring.

3. A mounted tapered roller bearing according to claim 1, characterized in that: There is a gap between the first outer ring and the second outer ring to form an oil injection channel, and the bearing housing is provided with an oil injection head that communicates with the oil injection channel.

4. A mounted tapered roller bearing according to claim 1, characterized in that: It also includes a first seal and a second seal, which are symmetrically located within the bearing housing. The first seal is disposed between the inner ring and the bearing housing, and the second seal is located between the locking ring and the inner ring.

5. A mounted tapered roller bearing according to claim 4, characterized in that: Both the first and second seals are composed of metal parts and multiple rubber rings.

6. A mounted tapered roller bearing according to claim 1, characterized in that: It also includes two annular limiting members, which are symmetrically sleeved on both ends of the inner ring. Each annular limiting member is provided with a set screw, and the inner ring has a screw hole in the radial direction that mates with the set screw.

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