Integrated needle roller thrust bearing

Abstract

The utility model discloses an integrated needle roller thrust bearing, and relates to the technical field of bearings, the integrated needle roller thrust bearing comprises an outer shaft sleeve, the side surface of the outer shaft sleeve is provided with a side surface stress groove for installing an axial limiting sleeve, the axial limiting sleeve is movably connected in the side surface stress groove, and the side surface of the axial limiting sleeve is also movably connected with a thrust sheet; the axial limiting sleeve comprises a ball retainer clamped and matched with the inner side of the side face stress groove, limiting holes are formed in the ball retainer in an annular array mode, and a spherical ball is placed in each limiting hole. According to the utility model, when the thrust sheet is subjected to circumferential rotating force, the thrust sheet can rotate on the side surface of the axial limiting sleeve, and meanwhile, the thrust sheet rotates to drive the spherical balls in the limiting holes to roll, so that the bearing not only can bear the axial force, but also can bear the radial force, and the use function of equipment is further increased.

Description

Technical Field

[0001] This utility model specifically relates to the field of bearing technology, and more specifically to an integrated needle roller thrust bearing. Background Technology

[0002] Needle roller thrust bearings are a type of rolling bearing used to bear axial loads. They are mainly composed of needle rollers, cages, washers, and other components. They rely on the rolling of the needle rollers to achieve relative movement. They can withstand large axial loads while ensuring smooth relative movement and low friction. When an axial load is applied to a needle roller thrust bearing, the needle rollers roll between the raceways of the inner and outer rings under the action of axial force, converting the axial load into rolling friction.

[0003] However, in practice, it has been noted that most thrust bearings currently use a split design and are assembled together during installation. When used at the end of a transverse shaft, they need to withstand not only axial force but also radial force. This causes the internal needle rollers to be subjected to a downward torque, resulting in wear between the needle rollers and the raceway. While ordinary needle roller bearings can provide support, they cannot withstand axial loads and therefore cannot meet the requirements for special applications. Utility Model Content

[0004] The purpose of this invention is to provide an integrated needle roller thrust bearing, in which needle rollers and balls are respectively arranged on the inner side of the outer ring and are limited by their respective cages. The needle rollers are normally installed and bear the radial force of the shaft, supporting it, while the balls are installed on the side of the outer ring and bear the axial force. This allows the bearing to simultaneously bear both axial and radial forces, thus solving the technical problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An integrated needle roller thrust bearing includes an outer bushing. The side of the outer bushing has a side force groove for installing an axial limiting sleeve, and the axial limiting sleeve is movably connected in the side force groove. A thrust plate is also movably connected to the side of the axial limiting sleeve.

[0007] The axial limiting sleeve includes a ball retainer that engages with the inner side of the side force groove. The ball retainer has limiting holes arranged in a ring array, and each limiting hole contains a spherical ball.

[0008] As a further technical solution of this utility model, the side of the ball retainer is provided with a locking groove, the end of the thrust plate is inserted into the side force groove, and the end of the thrust plate is engaged with the locking groove.

[0009] As a further technical solution of this utility model, one side of the spherical ball is in contact with the side of the side force groove, and the other side is in contact with the side of the thrust plate near the ball retainer.

[0010] As a further technical solution of this utility model, a needle roller retainer is placed on the inner side of the outer bushing. The needle roller retainer has through slots arranged in a ring array, and a cylindrical needle roller is movably connected in each through slot.

[0011] As a further technical solution of this utility model, a raceway is provided on the inner side of the outer bushing, wherein the cylindrical needle roller is placed in the raceway on the inner side of the outer bushing, and grease storage grooves are provided on both sides of the raceway, and the grease storage grooves are respectively located at both ends of the cylindrical needle roller.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In this invention, when the thrust plate is subjected to circumferential rotational force, the thrust plate will rotate on the side of the axial limiting sleeve. At the same time, the rotation of the thrust plate will drive the spherical balls in the limiting hole to roll, so that the bearing can not only withstand axial force but also radial force, thereby increasing the functionality of the equipment.

[0014] In this utility model, the locking groove opened on the side of the ball retainer near the thrust plate engages with the side of the thrust plate, and the thrust plate can rotate on the side of the ball retainer. Then, through the engagement between the ball retainer and the side force groove, the axial limiting sleeve and the thrust plate are installed on the side of the outer bushing to prevent the loss of parts during disassembly.

[0015] In this invention, symmetrical grease storage grooves are provided in the outer bushing, and the grease storage grooves are located at both ends of the cylindrical needle rollers, which can store grease and ensure sufficient lubrication between the cylindrical needle rollers, the outer bushing, and the needle roller cage. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model in use.

[0017] Figure 2 This utility model Figure 1 Top view.

[0018] Figure 3 This utility model Figure 2 AA sectional view.

[0019] Figure 4 This utility model Figure 3 A magnified view of a portion of the image.

[0020] Figure 5This utility model Figure 1 A schematic diagram of the split structure.

[0021] Figure 6 This is a three-dimensional structural diagram of the axial limiting sleeve in this utility model.

[0022] Figure 7 This utility model Figure 6 A magnified view of a portion of the image.

[0023] Figure 8 This is a three-dimensional structural diagram of the outer bushing in this utility model.

[0024] In the picture:

[0025] Outer bushing-1, cylindrical needle roller-2, needle roller retainer-3, axial limiting sleeve-4, ball retainer-41, limiting hole-42, spherical ball-43, locking groove-44, thrust plate-5, grease storage groove-6, side force groove-7, through groove-8. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figure 1-8 This utility model embodiment provides an integrated needle roller thrust bearing, including an outer bushing 1. The outer bushing 1 has a side force groove 7 for installing an axial limiting sleeve 4 on its side, and the axial limiting sleeve 4 is movably connected in the side force groove 7. A thrust plate 5 is also movably connected to the side of the axial limiting sleeve 4.

[0028] The axial limiting sleeve 4 includes a ball retainer 41 that engages with the inner side of the side force groove 7. The ball retainer 41 has limiting holes 42 arranged in a ring array, and each limiting hole 42 contains a spherical ball 43.

[0029] In this embodiment, the ball retainer 41 is provided with a locking groove 44 on its side, the end of the thrust piece 5 is inserted into the side force groove 7, and the end of the thrust piece 5 is engaged with the locking groove 44.

[0030] By adopting the above technical solution, when the thrust plate is subjected to circumferential rotational force, the thrust plate will rotate on the side of the axial limiting sleeve. At the same time, the rotation of the thrust plate will drive the spherical balls in the limiting hole to roll, so that the bearing can not only withstand axial force, but also radial force, thereby increasing the functionality of the equipment.

[0031] Furthermore, one side of the spherical ball 43 is in contact with the side of the side force groove 7, and the other side is in contact with the side of the thrust plate 5 near the ball retainer 41.

[0032] Furthermore, a needle roller retainer 3 is placed on the inner side of the outer bushing 1. The needle roller retainer 3 has through slots 8 arranged in a ring array, and each through slot 8 is movably connected to a cylindrical needle roller 2.

[0033] Furthermore, a raceway is provided on the inner side of the outer bushing 1, wherein the cylindrical needle roller 2 is placed in the raceway on the inner side of the outer bushing 1, and grease storage grooves 6 are provided on both sides of the raceway, and the grease storage grooves 6 are respectively located at both ends of the cylindrical needle roller 2.

[0034] By adopting the above technical solution, the locking groove 44 opened on the side of the ball retainer 41 near the thrust plate 5 is engaged with the side of the thrust plate 5, and the thrust plate 5 can rotate on the side of the ball retainer 41. Then, through the engagement between the ball retainer 41 and the side force groove 7, the axial limiting sleeve 4 and the thrust plate 5 are installed on the side of the outer bushing 1 to prevent the loss of parts during disassembly.

[0035] Furthermore, the ball retainer 41 is snapped into the inner side of the side force groove 7 and rotates with the inner side of the ball retainer 41. When the ball retainer 41 rotates, the spherical balls 43 on the ball retainer 41 are on the side of the side force groove 7, so that the bearing can withstand axial force.

[0036] Furthermore, the thrust plate 5 is provided with an inwardly extending wedge-shaped locking block on the side near the spherical ball 43. The wedge-shaped locking block allows the thrust plate 5 to engage in the locking groove 44 on the side of the ball retainer 41, and the wedge-shaped locking block can slide circumferentially in the locking groove 44, thereby allowing the thrust plate 5 to rotate on the side of the ball retainer 41.

[0037] Furthermore, the side of the cylindrical needle roller 2 extends to the outside of the needle roller holder 3, and the portion extending to the outside of the needle roller holder 3 is disposed in the raceway inside the outer bushing 1, which serves to limit the movement of the cylindrical needle roller 2 and the needle roller holder 3.

[0038] The working principle of this utility model is as follows: When in use, the bearing is first installed on one end of the shaft, and the shaft contacts the cylindrical needle roller 2 inside the outer bushing 1. When the shaft rotates, it drives the cylindrical needle roller 2 to roll in the raceway inside the outer bushing 1. The cylindrical needle roller 2 supports the radial force on the shaft. At the same time, the shaft shoulder contacts the thrust plate 5. During the rotation of the shaft, the thrust plate 5 follows the shaft shoulder to rotate on the side of the ball retainer 41. The spherical balls 43 follow the rotation of the thrust plate 5 and roll along the side of the side force groove 7. The axial force on the shaft is borne by the axial limiting sleeve 4 and the thrust plate 5. The outer bushing 1 and the axial limiting sleeve 4 are installed together, which can prevent the loss of parts during disassembly, even if the worker is not present.

[0039] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A unit type needle thrust bearing, characterized by: Including outer sleeve (1), the side of outer sleeve (1) is provided with the side stress slot (7) of installing axial limit sleeve (4), and axial limit sleeve (4) is movably connected in side stress slot (7), the side of axial limit sleeve (4) is movably connected with thrust sheet (5) still; The axial limit sleeve (4) includes the ball cage (41) of the inside joint cooperation of side stress slot (7), the limit hole (42) is arranged in the annular array of ball cage (41), and each limit hole (42) is placed with spherical ball (43).

2. The one-piece needle thrust bearing of claim 1, wherein: The side of ball cage (41) is equipped with locking slot (44), the end of thrust sheet (5) is inserted with side stress slot (7) and is matched, and the end of thrust sheet (5) is matched with locking slot (44) and is matched.

3. The one-piece needle thrust bearing of claim 2, wherein: The side of spherical ball (43) is attached to the side of side stress slot (7), and the other side is attached to the side of thrust sheet (5) near ball cage (41).

4. The one-piece needle thrust bearing of claim 3, wherein: The inside of outer sleeve (1) is placed with needle cage (3), and the through groove (8) is arranged in the annular array of needle cage (3), and each through groove (8) is movably connected with cylindrical needle (2).

5. The one-piece needle thrust bearing of claim 4, wherein: The inside of outer sleeve (1) is provided with the raceway, wherein the cylindrical needle (2) is placed in the raceway of the inside of outer sleeve (1), the raceway both sides are provided with the grease storage groove (6) still, and the grease storage groove (6) is respectively located at the both ends of cylindrical needle (2).

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