Taper sleeve and tapered roller bearing assembly

Abstract

The utility model discloses a taper sleeve tapered roller bearing assembly, which is applied to the technical field of tapered roller bearings and comprises an outer ring, inner rings are symmetrically and rotatably connected to two sides of the inner surface of the outer ring, and retainers are sleeved on the outer surfaces of the two inner rings. The outer ring and the inner ring are made of high-carbon chromium steel, so that the strength of the bearing taper sleeve is improved, and the overall strength and the loading capacity of the bearing are improved. And meanwhile, the outlook hole is formed in the fixed shaft ring and used for observing whether the end face between the two inner rings is tightly attached to the two sides of the middle spacing ring or not, and the mounting precision of the bearing is guaranteed. The oil injection hole is formed in the surface of the outer ring and is directly communicated between the two inner rings, so that lubricating oil can be added into the tapered roller bearing through the oil injection hole, and a dustproof sealing cover does not need to be opened. The sealing performance between the sealing cover and the bearing is prevented from being reduced, and lubricating oil can be conveniently and manually supplemented into the bearing.

Description

Technical Field

[0001] This utility model belongs to the technical field of tapered roller bearings, and specifically relates to a tapered roller bearing assembly with a tapered sleeve. Background Technology

[0002] Tapered roller bearings are a common mechanical component capable of carrying radial and axial loads, suitable for bidirectional force transmission. The angle between their inner and outer rings determines their load-bearing capacity and rotational stability. They are suitable for high loads and high-speed operation.

[0003] Currently, Chinese utility model patent CN221423698U discloses a novel tapered roller bearing. Existing tapered roller bearing assemblies, after a certain period of use, suffer from problems such as deformation of the keyway inside the tapered sleeve and cracking of the bearing inner ring due to objective impact loads and large rolling loads during production. In severe cases, this can lead to bearing burnout and other abnormal failures. Furthermore, during installation, the bearing is interference-fitted onto the bushing, requiring heating of the bearing's inner bore for installation. After cooling, it is inconvenient to uniformly check the fit between the inner ring and the intermediate spacer. If they do not fit properly, the bearing clearance increases, resulting in significant movement during rolling and affecting the precision of the rolled product. Moreover, existing tapered roller bearings generally rely on side-mounted covers for dust protection. When manually adding lubricating oil to the tapered roller bearing, the side cover must be opened to expose the rolling elements. Although lubricating oil can be added directly, repeatedly opening the cover can easily affect the seal between the cover and the bearing. Utility Model Content

[0004] The purpose of this utility model is to provide a tapered roller bearing assembly with tapered sleeve, which has the advantages of reducing the deformation of the keyway in the inner hole of the tapered sleeve, facilitating the detection of whether the inner ring and the spacer are tightly fitted, and facilitating the manual replenishment of lubricating oil into the bearing.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a tapered roller bearing assembly, including an outer ring, with inner rings symmetrically rotatably connected to both sides of the inner surface of the outer ring, a retainer fitted on the outer surface of each of the two inner rings, rolling elements rotatably connected inside the retainer and respectively moving and abutting against the outer ring and the inner ring, a spacer ring snapped between the two inner rings, and a fixed collar snapped onto the inner surface of the two inner rings, with an observation hole opened on the inner surface of the fixed collar.

[0006] By employing the above technical solution, the outer and inner rings are made of high-carbon chromium steel, thereby increasing the strength of the bearing tapered sleeve and improving the overall strength and load capacity of the bearing. Simultaneously, an observation hole is provided inside the fixed collar to observe whether the end faces between the two inner rings and the two sides of the intermediate spacer are tightly fitted, ensuring the bearing's installation accuracy. An oil filling hole is provided on the surface of the outer ring, directly connecting the two inner rings. Therefore, lubricating oil can be added to the tapered roller bearing through the oil filling hole without opening the dust cover. This prevents a decrease in the seal between the dust cover and the bearing and facilitates manual replenishment of lubricating oil to the bearing.

[0007] The present invention is further configured such that: oil injection holes are opened at the top and bottom of the outer ring surface, a rubber plug is engaged at the end of the oil injection hole away from the middle spacer, and an outer ring groove is opened on the surface of the outer ring to cooperate with the rubber plug.

[0008] Using the above technical solution, lubricating oil can be added to the inside of the tapered roller bearing through the oil filling hole without opening the dust cover, making it convenient to manually add lubricating oil to the bearing.

[0009] The present invention is further configured such that the rolling element annular array is inside the cage, and the outer ring, the inner ring, and the cage are all mounted axially.

[0010] Using the above technical solution, the tapered roller bearing will have corresponding covers installed on both sides according to the size for waterproofing and dustproofing, so it will not affect the movement of the internal rolling elements.

[0011] The present invention is further configured such that both the outer ring and the inner ring are made of high-carbon chromium steel.

[0012] By adopting the above technical solution, the strength of the bearing tapered sleeve is increased, the overall strength and load capacity of the bearing are improved, and the damage to the tapered sleeve caused by impact during rolling is mitigated.

[0013] The present invention is further configured such that: stress relief holes are provided on the inner surface of the fixed collar.

[0014] The above technical solution can be used to relieve some of the stress in the inner ring of the bearing and improve the stability of the bearing in use.

[0015] In summary, this utility model has the following beneficial effects:

[0016] 1. By using high-carbon chromium steel for both the outer and inner rings, the strength of the bearing tapered sleeve is increased, thereby improving the overall strength and load capacity of the bearing. Simultaneously, observation holes are provided inside the fixed collar to check whether the end faces between the two inner rings and the two sides of the intermediate spacer are tightly fitted, ensuring the bearing's installation accuracy.

[0017] 2. By creating an oil filling hole on the surface of the outer ring, which directly connects to the two inner rings, lubricating oil can be added to the tapered roller bearing through the oil filling hole without opening the dust cover. This prevents a decrease in the seal between the dust cover and the bearing and facilitates the replenishment of lubricating oil to the bearing. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a partial structural side sectional view of this utility model;

[0020] Figure 3 This is a side sectional view of the fixed collar of this utility model;

[0021] Figure 4 This is a utility model Figure 2 Enlarged view of point A in the image.

[0022] Reference numerals: 1. Outer ring; 2. Inner ring; 3. Cage; 4. Rolling element; 5. Intermediate spacer; 6. Observation hole; 7. Oil filling hole; 8. Rubber plug; 9. Outer ring groove; 10. Fixed collar; 11. Stress relief hole. Detailed Implementation

[0023] The present invention will be further described in detail below with reference to the accompanying drawings.

[0024] Example 1:

[0025] refer to Figure 1 , Figure 2 A tapered roller bearing assembly includes an outer ring 1, with inner rings 2 symmetrically rotatably connected to both sides of the inner surface of the outer ring 1. A cage 3 is fitted onto the outer surface of each inner ring 2, and rolling elements 4 are rotatably connected inside the cage 3, respectively abutting against the outer ring 1 and inner ring 2. A spacer 5 is engaged between the two inner rings 2, and a retaining collar 10 is engaged on the inner surface of the two inner rings 2. An observation hole 6 is provided on the inner surface of the retaining collar 10. The outer ring 1 and inner rings 2 are made of high-carbon chromium steel, thereby increasing the strength of the tapered bearing sleeve and improving the overall strength and load capacity of the bearing. The observation hole 6 inside the retaining collar 10 allows for observation of whether the end faces between the two inner rings 2 are tightly fitted with the sides of the spacer 5, ensuring the bearing's installation accuracy.

[0026] refer to Figure 1 , Figure 2 The rolling elements 4 are arranged in a ring array inside the cage 3, and the outer ring 1, inner ring 2, and cage 3 are all mounted axially. The tapered roller bearing will have appropriate caps installed on both sides according to its dimensions for waterproofing and dustproofing, thus not affecting the movement of the internal rolling elements 4.

[0027] refer to Figure 1 Both the outer ring 1 and the inner ring 2 are made of high-carbon chromium steel. This increases the strength of the bearing tapered sleeve, improves the overall strength and load capacity of the bearing, and mitigates damage to the tapered sleeve caused by impact during rolling.

[0028] Brief description of usage: The outer ring 1 and inner ring 2 are made of high-carbon chromium steel. During processing, compared to products of the same specifications on the market, the outer diameter of the outer ring is reduced by 6mm, the inner hole of the inner ring is reduced by 6mm, the cross-section is thickened by 3mm, and the diameter of the rolling elements is increased by 1mm. This reduces the bearing's outer diameter, shrinks the inner hole size, thickens the cross-section, and increases the diameter of the rolling elements, increasing the inner ring strength by 25% and improving the overall strength and load capacity of the bearing. Simultaneously, a viewing hole 6 is opened inside the fixed collar 10. When the two inner rings 2 are symmetrically assembled onto both sides of the inner side of the outer ring 1, the end faces between the two inner rings 2 can be observed through the viewing hole 6 to ensure a tight fit between the end faces and the sides of the intermediate spacer 5. Furthermore, since the viewing hole 6 is located on the inner surface of the fixed collar 10, when installed on equipment, the equipment will be fitted onto the inner surface of the fixed collar 10, thus sealing the viewing hole 6 externally and preventing dust and moisture from entering the interior. Additionally, appropriate covers will be automatically installed on both sides of the bearing for waterproofing and dustproofing, thus not affecting the movement of the internal rolling elements 4.

[0029] Example 2:

[0030] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 A tapered roller bearing assembly with a tapered bushing has oil injection holes 7 at both the top and bottom of the outer ring 1. A rubber plug 8 is fitted into the end of the oil injection hole 7 furthest from the intermediate spacer 5. An outer ring groove 9, which mates with the rubber plug 8, is formed on the surface of the outer ring 1. By creating the oil injection holes 7 on the surface of the outer ring 1, which directly connect to the two inner rings 2, lubricating oil can be added to the tapered roller bearing through the oil injection holes 7 without opening the dust cover. This prevents a decrease in the seal between the dust cover and the bearing and facilitates manual replenishment of lubricating oil to the bearing.

[0031] Brief description of usage: By opening an oil filling hole 7 on the surface of the outer ring 1, which directly connects to the two inner rings 2, lubricating oil can be added to the tapered roller bearing through the oil filling hole 7 without opening the dust cover. Simultaneously, by inserting a rubber plug 8 into the oil filling hole 7, it can be blocked, preventing dust from entering the interior when not in use. The outer ring groove 9 on the surface of the outer ring 1 allows the rubber plug 8 to be inserted, preventing it from protruding outwards and affecting the normal installation of the outer ring 1.

[0032] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A thimble-tapered roller bearing assembly comprising an outer ring (1), characterized in that: Both sides of the inner surface of the outer ring (1) are symmetrically connected with the inner ring (2), the outer surface of the two inner rings (2) is sleeved with the retainer (3), the inside of the retainer (3) is rotatably connected with the rolling body (4) which is in contact with the outer ring (1) and the inner ring (2), the two inner rings (2) are clamped with the intermediate spacer (5), the inner surface of the two inner rings (2) is clamped with the fixed collar (10), the inner surface of the fixed collar (10) is provided with the lookout hole (6).

2. A thimble cone roller bearing assembly according to claim 1, wherein: The top and bottom of the surface of the outer ring (1) is provided with the oil injection hole (7), one end of the oil injection hole (7) away from the intermediate spacer (5) is clamped with the rubber plug (8), the surface of the outer ring (1) is provided with the outer ring groove (9) which is used with the rubber plug (8).

3. A thimble cone roller bearing assembly according to claim 1, wherein: The rolling body (4) is arranged in the retainer (3), the outer ring (1) and the inner ring (2) and the retainer (3) are all installed along the axis.

4. A thimble cone roller bearing assembly according to claim 1, wherein: The outer ring (1) and the inner ring (2) are made of high carbon chromium steel.

5. A thimble cone roller bearing assembly according to claim 1, wherein: The inner surface of the fixed collar (10) is also provided with the stress relief hole (11).

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