A shaft core positioning device

Abstract

The utility model relates to the technical field of bearing seat, specifically disclose a kind of axle core positioning device, including the bearing ring being set between bearing seat and axle core, bearing ring includes inner ring and outer ring, still include the retainer of assembling multiple rolling elements, and the retainer is fixedly installed with: spring piece, it keeps contact with inner ring and outer ring inner wall, spacer, it is used to block the lubricating oil between inner ring and outer ring.The axle core positioning device provided by the utility model, when retaining frame receives axial impact force, it is absorbed and buffered by spring piece, so that retaining frame has axial movement ability, so rolling element can keep normal rolling contact with raceway, rather than " gnaw " type contact, reduce the generation of wear problem.And when spacer axial movement, the lubricating oil on both sides acts as spring piece buffering damping, meets buffering energy-absorbing condition, while lubricating oil can also absorb part of axial pressure, the purpose is to offset the axial movement of axle core, weaken the formation of impact force.

Description

Technical Field

[0001] This utility model relates to bearing housing technology, specifically a shaft positioning device. Background Technology

[0002] When the shaft transmits kinetic energy from the output device, a bearing housing is used due to the travel distance. The purpose is to extend the transmission distance, and hot or cold fitting is used to secure the shaft to the inner ring of the bearing.

[0003] For example, the publication (announcement) number: CN119641803A, publication (announcement) date: 2025-03-18, discloses a self-lubricating dustproof bearing housing, including an upper end cover, a lower end cover hinged below the upper end cover, a self-lubricating mechanism and a dustproof sealing ring disposed inside the upper end cover and the lower end cover, a bushing disposed inside the self-lubricating mechanism, and a shaft core movably installed inside the bushing and the dustproof sealing ring. The self-lubricating mechanism includes an external return component rotatably connected to the inner wall of the upper end cover and the lower end cover, and an internal return component rotatably connected to the outer wall of the bushing.

[0004] The shortcomings of the existing technology are that when the shaft core transmits kinetic energy from the equipment, it is easy for it to move along the axis of the shaft core and directly act on the bearing. Since the inner ring of the bearing is tightly connected to the side wall of the shaft core, the cage of the rolling elements in the bearing is very easy to squeeze with the inner ring, and cause the rolling elements and raceway edges to have a "biting" contact, resulting in local stress concentration, causing wear of the raceway or rolling elements, increasing the rolling gap, or even peeling off. At the same time, it will also make the cage bear axial impact force, causing cage deformation and damage. Utility Model Content

[0005] The purpose of this invention is to provide a shaft positioning device to address the aforementioned shortcomings in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A shaft positioning device includes a bearing ring disposed between a bearing housing and a shaft core, the bearing ring comprising an inner ring and an outer ring;

[0008] It also includes a cage fitted with multiple rolling elements, on which:

[0009] The elastic sheet maintains contact with the inner and outer inner walls of the ring;

[0010] The partition is used to block the lubricating oil between the inner and outer rings.

[0011] As a further description of the above technical solution: a liquid chamber is provided between the inner ring and the outer ring.

[0012] As a further description of the above technical solution, it also includes a sealing ring that is fixedly installed at the port of the liquid chamber.

[0013] As a further description of the above technical solution: an annular protrusion is fixedly installed on the sealing ring.

[0014] As a further description of the above technical solution: the retainer has multiple notches that communicate with the liquid chamber.

[0015] As a further description of the above technical solution: a partition plate is fixedly installed on the partition protrusion.

[0016] As a further description of the above technical solution: the partition protrusion is provided with a liquid slope for guiding lubricating oil to the partition plate.

[0017] As a further description of the above technical solution: a liquid channel located on the outer side of the rolling element is provided between adjacent partitions.

[0018] As a further description of the above technical solution: the liquid slope cooperates with the liquid channel.

[0019] As a further description of the above technical solution: the sealing ring is specifically a rubber ring.

[0020] In the above technical solution, the shaft positioning device provided by this utility model has the following beneficial effects: when the cage receives axial impact force, the elastic sheet absorbs and buffers the impact, enabling the cage to have axial movement capability. Therefore, the rolling elements can maintain normal rolling contact with the raceway, rather than "biting" contact, reducing wear problems. When the diaphragm moves axially, the lubricating oil on both sides acts as the elastic sheet for buffering and damping, satisfying the buffering and energy absorption conditions. At the same time, the lubricating oil can also absorb part of the axial pressure, the purpose of which is to counteract the axial movement of the shaft and weaken the formation of impact force. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0022] Figure 1 This is a schematic diagram of the assembly of the shaft core and bearing housing provided for an embodiment of the present utility model;

[0023] Figure 2 This is a schematic diagram of the assembly of the shaft core and bearing provided for an embodiment of the present utility model;

[0024] Figure 3 This is a schematic diagram of a bearing explosion provided for an embodiment of the present utility model;

[0025] Figure 4 This is a schematic cross-sectional view of the bearing side provided in an embodiment of the present utility model;

[0026] Figure 5 for Figure 4 Enlarged diagram of point A.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Bearing housing; 2. Shaft core; 3. Bearing ring; 31. Inner ring; 32. Outer ring; 33. Liquid chamber; 4. Sealing ring; 41. Ring protrusion; 5. Cage; 51. Notch; 52. Elastic sheet; 53. Spacer protrusion; 54. Spacer; 55. Liquid slope; 56. Liquid passage; 6. Rolling element. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0030] Please see Figure 1-5 The present invention provides a technical solution: a shaft positioning device, including a bearing ring 3 disposed between a bearing seat 1 and a shaft 2, the bearing ring 3 including an inner ring 31 and an outer ring 32;

[0031] It also includes a cage 5 equipped with multiple rolling elements 6, on which the following are fixedly mounted:

[0032] The elastic sheet 52 maintains contact with the inner walls of the inner ring 31 and the outer ring 32;

[0033] The partition 53 is used to block the lubricating oil between the inner ring 31 and the outer ring 32.

[0034] Specifically, the bearing housing 1 and the shaft core 2 are existing technologies and will not be described in detail here. The inner ring 31 and the outer ring 32 are provided with raceways that face each other, so that the spherical rolling element 6 can roll in the raceways.

[0035] Furthermore, the side wall of the cage 5 has equally spaced holes for embedding the rolling elements 6. The elastic sheet 52 is welded to the inner and outer port edges of the cage 5 and is made of elastic metal. The inner ring 31 and the outer ring 32 have annular grooves distributed in opposite directions, and the elastic sheet 52 is embedded in the annular grooves and rotates and slides.

[0036] Furthermore, the partition 53 is integrally formed on the inner wall of the cage 5 and is located in the middle of the inner wall of the cage 5.

[0037] Axial impact force is applied to the rolling elements 6 via the raceway, causing the cage 5 to receive the impact force. The elastic plate 52 absorbs and buffers the impact force, enabling the cage 5 to move axially. Therefore, the rolling elements 6 can maintain normal rolling contact with the raceway, rather than "biting" contact, thus reducing wear problems. The lubricating oil in the bearing ring 3 is separated by the partition 53. When the partition 53 moves axially, the lubricating oil on both sides acts as a buffer and damper for the elastic plate 52, satisfying the buffering and energy absorption conditions. At the same time, the lubricating oil can also absorb part of the axial pressure, with the aim of counteracting the axial movement of the shaft core 2 and weakening the formation of impact force.

[0038] In another embodiment of the present invention, a liquid chamber 33 is provided between the inner ring 31 and the outer ring 32.

[0039] The lubricating oil supplied from the bearing housing 1 is stored in the liquid chamber 33, which allows the lubricating oil to cover the outside of the cage 5, thus providing both lubrication and energy absorption.

[0040] In another embodiment of the present invention, a sealing ring 4 is further included, which is fixedly installed at the port of the liquid chamber 33.

[0041] The liquid chamber 33 is sealed by the sealing ring 4, which helps to keep the lubricating oil in the liquid chamber 33 in a stable state.

[0042] In another embodiment of the present invention, a ring protrusion 41 is fixedly installed on the sealing ring 4.

[0043] Specifically, the inner ring 31 and the outer ring 32 are provided with opposing annular grooves, which are used to fit the sliding ring protrusion 41.

[0044] By integrally forming the annular protrusion 41 on the outer wall of the sealing ring 4, the sealing effect of the sealing ring 4 can be strengthened, further reducing the problem of lubricating oil leakage.

[0045] In another embodiment of the present invention, the retainer 5 has a plurality of recesses 51 that communicate with the liquid chamber 33.

[0046] Specifically, the notch 51 is located at the end of the cage 5 and between adjacent rolling elements 6.

[0047] The notch 51 reduces the space occupied by the cage 5 in the liquid chamber 33, allowing the liquid chamber 33 to store more lubricating oil, thereby improving its ability to absorb impact.

[0048] In another embodiment of the present invention, a partition plate 54 is fixedly installed on the partition protrusion 53.

[0049] Specifically, the spacer 54 is welded to the end of the diaphragm 53, and the spacer 54 is closer to the axis of the cage 5.

[0050] The partition plate 54 increases the separation capacity of the partition 53, making it more difficult for the lubricating oil on both sides of the partition 53 to be exchanged, which further hinders the axial movement of the inner ring 31.

[0051] In another embodiment of the present invention, the diaphragm 53 is provided with a liquid slope 55 for guiding lubricating oil to the partition 54.

[0052] Specifically, the liquid slope 55 is integrally formed on the side wall of the partition 53.

[0053] The lubricating oil on this side is actively squeezed by the liquid slope 55 and flows along the liquid slope 55, which makes the lubricating oil have a certain flow capacity and also facilitates the buffering work of the elastic sheet 52. At the same time, when the flowing lubricating oil reaches the position of the partition 54, it returns, causing the lubricating oil to impact each other, thus ensuring the impact absorption capacity.

[0054] In another embodiment of the present invention, a fluid channel 56 located outside the rolling element 6 is provided between adjacent partitions 53.

[0055] The fluid passage 56 stores more lubricating oil around the rolling element 6, thereby improving the rolling element 6's basic lubrication and rolling ability.

[0056] In another embodiment of this utility model, the liquid slope 55 cooperates with the liquid channel 56.

[0057] By circumferentially diverting the lubricating oil flowing along the liquid slope 55 and actively entering the liquid channel 56, the pressure of the lubricating oil around the rolling element 6 is increased, which promotes the lubricating oil to fully enter the gap between the rolling element 6 and the raceway, making the two less prone to squeezing wear.

[0058] In another embodiment of this utility model, the sealing ring 4 is specifically a rubber ring.

[0059] The sealing ring 4 made of rubber can ensure the sealing performance, while also satisfying the cutting and forming of the ring protrusion 41, and controlling the cost of the parts.

[0060] Working principle: Axial impact force is applied to the rolling element 6 through the raceway, causing the cage 5 to receive the impact force. The elastic plate 52 absorbs and buffers the impact force, enabling the cage 5 to have axial movement capability. Therefore, the rolling element 6 can maintain normal rolling contact with the raceway, rather than "biting" contact, thereby reducing wear problems. The lubricating oil in the bearing ring 3 is separated by the partition 53. When the partition 53 moves axially, the lubricating oil on both sides acts as a buffer and damper for the elastic plate 52. At the same time, the lubricating oil can also absorb part of the axial pressure. The purpose is to counteract the axial movement of the shaft core 2 and weaken the formation of impact force.

[0061] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A shaft positioning device, characterized in that, Includes a bearing ring (3) disposed between the bearing housing (1) and the shaft core (2), the bearing ring (3) including an inner ring (31) and an outer ring (32); It also includes a cage (5) on which multiple rolling elements (6) are fixedly mounted: The elastic sheet (52) is in contact with the inner wall of the inner ring (31) and the inner wall of the outer ring (32); The partition (53) is used to block the lubricating oil between the inner ring (31) and the outer ring (32).

2. The shaft positioning device according to claim 1, characterized in that, A liquid chamber (33) is provided between the inner ring (31) and the outer ring (32).

3. The shaft positioning device according to claim 2, characterized in that, It also includes a sealing ring (4) that is fixedly installed at the port of the liquid chamber (33).

4. The shaft positioning device according to claim 3, characterized in that, An annular protrusion (41) is fixedly installed on the sealing ring (4).

5. A shaft positioning device according to claim 1, characterized in that, The retainer (5) has multiple notches (51) that communicate with the liquid chamber (33).

6. A shaft positioning device according to claim 1, characterized in that, A partition plate (54) is fixedly installed on the partition protrusion (53).

7. A shaft positioning device according to claim 6, characterized in that, The diaphragm (53) is provided with a liquid slope (55) for guiding lubricating oil to the diaphragm (54).

8. A shaft positioning device according to claim 7, characterized in that, A fluid channel (56) located outside the rolling element (6) is provided between adjacent partitions (53).

9. A shaft positioning device according to claim 8, characterized in that, The liquid slope (55) is matched with the liquid channel (56).

10. A shaft positioning device according to claim 3, characterized in that, The sealing ring (4) is specifically a rubber ring.

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