Clutch bearing
By designing an oil reservoir and oil filling hole in the clutch bearing, combined with the oiling structure on the cage, the problem of cumbersome operation of traditional clutch bearing lubrication methods is solved, realizing automatic oil filling and uniform distribution of lubricating oil, thus improving equipment efficiency and service life.
Patent Information
- Application Number
- CN202520695120.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-11
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-04-11
AI Technical Summary
Traditional clutch bearing lubrication methods require periodic disassembly and oil injection, which is cumbersome and difficult to control the amount of oil injected, resulting in high maintenance costs and low equipment efficiency.
The design incorporates an oil reservoir and an oil filling hole, combined with an oiling structure on the cage, to achieve automatic oil filling. The toothed structure drives the lubricating oil into the roller cavity as the bearing rotates, ensuring uniform distribution of the lubricating oil.
It achieves automatic oil replenishment, expands the oil storage capacity, improves the lubrication effect, extends the oil injection time, reduces the frequency of maintenance and equipment downtime, and improves equipment efficiency.
Smart Images
Figure CN223754463U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of bearings, in particular to a clutch bearing. BACKGROUND
[0002] In a mechanical transmission system, the clutch bearing is one of the core components for realizing power transmission, and its lubrication performance is directly related to the transmission efficiency, operation stability and service life.
[0003] Traditional clutch bearings mostly adopt the way of periodic disassembly and oil injection, and the lubricating grease needs to be supplemented after lifting the gearbox or removing the bearing, which leads to high maintenance cost and complicated operation.
[0004] As an optimization, some bearings are provided with oil injection holes, making the oil injection method simple. However, the oil injection method adopted is mostly manual oil supplement, and the space between the inner and outer rings of the bearing is limited, so the amount of oil injected each time is limited and the amount of oil is not easy to control. When the lubricating grease is injected in excess, it is easy to overflow from the gap and pollute the working environment; and when the grease is insufficient, frequent shutdown for oil injection is required, which significantly reduces the efficiency of the equipment. CONTENT OF THE INVENTION
[0005] In order to prolong the oil injection time each time and automatically supplement the oil, the present application provides a clutch bearing.
[0006] The clutch bearing provided by the present application adopts the following technical scheme:
[0007] A clutch bearing, comprising a bearing inner ring, a bearing outer ring, and rollers and a retainer arranged between the bearing inner ring and the bearing outer ring, wherein an inner wall of the bearing inner ring is provided with an oil storage groove, and a plurality of oil injection holes penetrating through the bearing inner ring are arranged on the oil storage groove; and the retainer is provided with an oiling structure for bringing the lubricating grease from the oil storage groove into the roller cavity through the oil injection holes.
[0008] In one of the embodiments, the oiling structure is a tooth-shaped structure arranged on the inner circle of the retainer.
[0009] In one of the embodiments, the directions of adjacent tooth-shaped structures are opposite in the circumferential direction.
[0010] In one of the embodiments, the retainer is provided with a lubricating oil channel, an oil inlet is arranged at one end of the lubricating oil channel away from the rollers, an oil outlet hole and an oil outlet groove are arranged on the end surface in contact with the rollers, and the oil outlet hole and the oil outlet groove are in communication.
[0011] In one of the embodiments, the oil inlet is in communication with the tooth-shaped structure.
[0012] In one of the embodiments, the number of oil inlets is the same as that of tooth-shaped structures.
[0013] In one of the embodiments, the clutch bearing further comprises a shell, the cross section of the inner ring is in the shape of "I", the cross section of the outer ring is in the shape of "L", and the shell is installed on the outer ring and seals the opening on the side of the inner ring and the outer ring.
[0014] In one of the embodiments, the shell is clamped on the outer ring.
[0015] In one of the embodiments, the shell is in the shape of "L" in cross section, and the shell comprises a blocking part and a clamping part for forming the shape of "L", the clamping part is clamped on the outer ring and covers the outer ring.
[0016] In one of the embodiments, the end of the clamping part away from the blocking part is bent to form a buckle, and the L-shaped right angle of the outer ring is provided with a chamfer structure for clamping the buckle.
[0017] In summary, the present application has the following beneficial effects:
[0018] 1. By designing the oil storage groove and the oil injection hole, on the one hand, the oil storage capacity of the bearing is expanded, and the use time after each oiling is improved.
[0019] 2. The oil storage groove designed on the inner wall of the inner ring can be directly filled through the oil injection hole arranged on the mounting shaft, and then the oil in the oil storage groove enters the roller cavity of the bearing through the oil injection hole. Such design can cooperate with the oil injection structure of the clutch to realize automatic oil injection.
[0020] 3. By the oiling structure, when the roller and the retainer are rotated during the use of the bearing, the lubricating oil can be stirred, so that the oil in the oil storage groove can be effectively brought into the roller cavity of the bearing. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 is the external structure diagram of the embodiment;
[0022] Figure 2 is the cross-sectional structure diagram of the embodiment;
[0023] Figure 3 is the exploded structure diagram of the embodiment;
[0024] Figure 4 is the structure diagram of the retainer in the embodiment;
[0025] Figure 5 is the cross-sectional structure diagram of the retainer in the embodiment.
[0026] In the figure, 100, bearing inner ring; 110, oil storage groove; 120, oil injection hole; 200, bearing outer ring; 210, chamfer structure; 220, guide chamfer; 300, shell cover; 310, plugging part; 320, clamping part; 321, buckle; 400, roller; 500, retainer; 510, oiling structure; 520, lubricating oil channel; 521, oil inlet; 522, oil outlet hole; 523, oil outlet groove. DETAILED DESCRIPTION
[0027] The application will be further described in detail below with reference to the accompanying drawings.
[0028] In the description of the present application, it should be understood that the terms "upper", "lower", "left", "right", etc. indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.
[0029] A clutch bearing, as shown in Figure 1 and Figure 2 , comprises a bearing inner ring 100, a bearing outer ring 200, a shell cover 300, and a roller 400 and a retainer 500 arranged between the bearing inner ring 100 and the bearing outer ring 200, the bearing inner ring 100, the bearing outer ring 200 and the shell cover 300 form a closed roller 400 cavity, and the roller 400 and the retainer 500 are located in the roller 400 cavity.
[0030] As shown in Figure 2 and Figure 3 , in order to facilitate assembly, the cross section of the bearing inner ring 100 is in the shape of "I", and the cross section of the bearing outer ring 200 is in the shape of "L", so that after the bearing inner ring 100, the bearing outer ring 200, the roller 400 and the retainer 500 are installed, one side of the bearing is provided with an opening.
[0031] The shell cover 300 is installed on the bearing outer ring 200 and closes the opening on one side of the bearing inner ring 100 and the bearing outer ring 200. Specifically, in order to further facilitate installation, the shell cover 300 is clamped and installed on the bearing outer ring 200.
[0032] The cross section of the shell cover 300 is in the shape of "L", and the shell cover 300 comprises a plugging part 310 and a clamping part 320 for forming the shape of "L", the plugging part 310 is used to close the opening, and the clamping part 320 is clamped with the bearing outer ring 200 and covers the bearing outer ring 200 to realize the connection between the shell cover 300 and the bearing outer ring 200.
[0033] The end of the snap-fit portion 320 away from the sealing portion 310 is bent to form a snap-fit 321, and the L-shaped right angle of the bearing outer ring 200 is provided with a chamfered structure 210 for engaging with the snap-fit 321.
[0034] In addition, to facilitate the installation of the snap-fit part 320 onto the bearing outer ring 200, a guide chamfer 220 is provided on the outer edge of the bearing outer ring 200 at the bearing opening.
[0035] like Figure 2 As shown, an oil reservoir 110 is provided on the inner wall of the bearing inner ring 100, and a plurality of oil injection holes 120 are provided on the oil reservoir 110, penetrating the bearing inner ring 100. Preferably, three or more oil injection holes 120 are provided, and the plurality of oil injection holes 120 are evenly distributed around the axis on the inner wall of the bearing inner ring 100. The oil reservoir 110 is connected to the roller 400 cavity through the oil injection holes 120.
[0036] like Figure 4 and Figure 5 As shown, the retainer 500 is provided with an oiling structure 510 for bringing grease from the oil reservoir 110 into the roller 400 cavity through the oil injection hole 120.
[0037] In this embodiment, the oiling structure 510 is a toothed structure provided on the inner circle of the retainer 500. The toothed structure is provided by protrusion or groove on the inner circle of the retainer 500. In this embodiment, the toothed structure is formed by a groove structure.
[0038] Furthermore, in order to ensure that the bearing is effective in both forward and reverse rotation, the adjacent tooth structures are oriented in opposite directions around the circumference.
[0039] The cage 500 is provided with a lubricating oil passage 520. The lubricating oil passage 520 has an oil inlet 521 at the end away from the roller 400, and an oil outlet 522 and an oil outlet groove 523 at the end face that abuts against the roller 400. The oil outlet 522 and the oil outlet groove 523 are connected. The oil outlet groove 523 penetrates the inner and outer walls of the cage 500, so that the roller 400 can drive the lubricating oil to flow in the lubricating oil passage 520 when it rotates.
[0040] To better facilitate the flow of lubricating oil within the lubrication channel 520, the number of oil inlets 521 is the same as that of the toothed structure, and the oil inlets 521 correspond one-to-one with the toothed structure and are interconnected. This allows the toothed structure to directly deliver a portion of the lubricating oil into the lubrication channel 520 when the cage 500 rotates.
[0041] In addition, since the toothed structure formed by the groove has no protrusions, the effect of the reverse toothed structure on the lubricating oil when the cage 500 rotates forward is negligible, so that the forward toothed structure can better deliver the lubricating oil into the lubricating oil passage 520.
[0042] The embodiments of the present application are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, and thus: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.
Claims
1. A clutch bearing comprising a bearing inner ring (100), a bearing outer ring (200), and rollers (400) and a cage (500) arranged between the bearing inner ring (100) and the bearing outer ring (200), characterized in that: The inner wall of the bearing inner ring (100) is provided with an oil storage groove (110), and the oil storage groove (110) is provided with a plurality of oil injection holes (120) penetrating the bearing inner ring (100); the cage (500) is provided with an oiling structure (510) for bringing grease from the oil storage groove (110) into the roller (400) cavity through the oil injection hole (120).
2. The clutch bearing of claim 1, wherein: The oiling structure (510) is a tooth-shaped structure arranged on the inner circle of the cage (500).
3. The clutch bearing of claim 2, wherein: The circumferential direction of the adjacent tooth-shaped structures is opposite.
4. A clutch bearing according to claim 2 or 3, characterised in that: The cage (500) is provided with a lubricating oil channel (520), one end of the lubricating oil channel (520) away from the roller (400) is provided with an oil inlet (521), the end face in contact with the roller (400) is provided with an oil outlet hole (522) and an oil outlet groove (523), and the oil outlet hole (522) and the oil outlet groove (523) are communicated.
5. The clutch bearing of claim 4, wherein: The oil inlet (521) is communicated with the tooth-shaped structure.
6. The clutch bearing of claim 5, wherein: The number of the oil inlet (521) is the same as that of the tooth-shaped structure.
7. The clutch bearing of claim 1, wherein: The clutch bearing further comprises a shell cover (300), the cross section of the bearing inner ring (100) is in the shape of "I", the cross section of the bearing outer ring (200) is in the shape of "L", and the shell cover (300) is installed on the bearing outer ring (200) and seals the opening on one side of the bearing inner ring (100) and the bearing outer ring (200).
8. The clutch bearing of claim 7, wherein: The shell cover (300) is clamped and installed on the bearing outer ring (200).
9. The clutch bearing of claim 8, wherein: The cross section of the shell cover (300) is in the shape of "L", and the shell cover (300) comprises a blocking part (310) for forming the shape of "L" and a clamping part (320), the clamping part (320) is clamped with the bearing outer ring (200) and covers the bearing outer ring (200).
10. The clutch bearing of claim 9, wherein: The end of the clamping part (320) away from the blocking part (310) is bent to form a buckle (321), and the L-shaped right angle of the bearing outer ring (200) is provided with a chamfer structure (210) for clamping and cooperating with the buckle (321).