Maintenance-free bearing of textile machine
By designing a maintenance-free bearing structure and utilizing an airbag for automatic oil replenishment and an adsorption-based dustproof sealing structure, the problem of overheating and difficult maintenance of textile machine bearings has been solved, achieving long-term maintenance-free operation and extended service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-30
- Publication Date
- 2026-04-03
AI Technical Summary
Existing textile machine bearings are prone to overheating due to high rotation speed, making maintenance and lubrication difficult. Damage to a single bearing can affect the entire production line. Therefore, it is necessary to design a simple lubrication device to extend service life and achieve long-term maintenance-free operation.
Design a maintenance-free bearing that includes a bearing, an oil reservoir, a roller, an oil injection bolt, and an air bladder. Automatic oil replenishment is achieved by the air bladder expanding after being compressed. Combined with a slow expansion mechanism using springs and rubber materials, an adsorption and dustproof sealing structure is adopted to prevent textile fibers from entering, thus extending the bearing's service life.
It achieves automatic oil replenishment for 5-10 years, has a simple structure, effectively prevents textile fibers from entering, and extends the service life of the bearing.
Smart Images
Figure CN121782273A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to a maintenance-free bearing for textile machines, and pertains to the field of bearing technology. Background Technology
[0002] Existing textile machine bearings are difficult to maintain and lubricate due to their high rotation speed and heat generation; damage to a single bearing can affect the entire production line. Therefore, it is necessary to design a simple lubrication device to extend the service life of textile bearings and achieve long-term maintenance-free operation. Summary of the Invention
[0003] The purpose of this invention is to provide a maintenance-free bearing for textile machines that has a simple structure and can automatically replenish oil over a long period of time.
[0004] In view of the above-mentioned technical problems, the present invention provides a maintenance-free bearing for textile machines, including a bearing, an oil reservoir, a roller, an oil injection bolt, and an air bladder. A tapered bore is provided in the inner ring of the bearing, and an oil injection hole is provided in the tapered bore. The tapered shaft end of the roller is disposed in the tapered bore, and an oil reservoir is provided in the tapered shaft end; an annular oil groove is provided on the outside of the tapered shaft end. A check valve is provided in the oil passage of the oil injection bolt, and the oil injection bolt seals the oil reservoir through its threads. An air bladder is provided in the oil reservoir. Bearing grease is added to the oil reservoir through the oil injection bolt, and the air bladder is compressed; the sealing pressure of the bearing's oil seal lip is greater than the pressure of the compressed air bladder. After the oil seal wears and leaks oil over a long period of operation, the air bladder expands, and the bearing grease in the oil reservoir enters the bearing for automatic oil replenishment.
[0005] Preferably, a spring is provided in the airbag, and the airbag is made of rubber; the spring softens as the rubber ages, causing the airbag to expand slowly for long-term oil filling.
[0006] Preferably, the oil seal is a metal ring groove seal. During bearing use, wool fibers enter the sealing groove of the metal ring groove seal and mix with leaked bearing grease to form an oil felt seal. Once the sealing groove is completely blocked, the wool fibers stop entering the bearing.
[0007] Preferably, the metal annular groove seal is provided with a thin-lip sealing ring, and the lip material of the thin-lip sealing ring is wear-resistant polytetrafluoroethylene material.
[0008] Based on the above technical solutions, the present invention has at least one of the following beneficial effects: 1. The present invention provides a maintenance-free bearing for textile machines that achieves automatic oil replenishment by compressing and expanding an air bladder. It has a simple structure and can operate for 5-10 years without maintenance. 2. The airbag is equipped with a spring. The spring softens as the rubber ages, causing the airbag to expand slowly, allowing it to work for a long time without the need for lubrication. 3. Adopting an adsorption and dustproof sealing structure effectively prevents textile fibers from entering the bearing and extends the bearing's service life. Attached Figure Description
[0009] Figure 1 This is a schematic diagram of the operation of a maintenance-free bearing for a textile machine according to the present invention.
[0010] Explanation of main attached symbols 1-Bearing; 2-Inner ring; 3-Tapered bore; 4-Oil injection hole; 5-Roller; 6-Tapered shaft head; 7-Oil reservoir; 8-Oil injection bolt; 9-Check valve; 10-Annular oil groove; 11-Airbag; 12-Oil seal; 13-Spring; 14-Metal ring groove seal; 15-Sealing groove; 16-Thin lip seal ring. Detailed Implementation
[0011] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.
[0012] like Figure 1 As shown, a maintenance-free bearing for a textile machine includes a bearing 1, a roller 5, an oil reservoir 7, an oil injection bolt 8, and an air bladder 11. A tapered bore 3 is provided in the inner ring 2 of the bearing 1, and an oil injection hole 4 is provided on the tapered bore 3. A tapered shaft head 6 of the roller 5 is disposed in the tapered bore 3, and an oil reservoir 7 is provided in the tapered shaft head 6; an annular oil groove 10 is provided on the outside of the tapered shaft head 6. A check valve 9 is provided in the oil passage of the oil injection bolt 8, and the oil injection bolt 8, by connecting to the oil reservoir 7, bolts the bearing 1 and the roller 5 together. An air bladder 11 is provided in the oil reservoir 7. Bearing grease is added to the oil reservoir 7 through the oil filling port of the oil injection bolt 8, and the air bladder 11 is compressed. The sealing pressure of the lip of the oil seal 12 of the bearing 1 is greater than the pressure of the compressed air bladder 11; for example, the maximum pressure of the lip of the oil seal 12 is 0.4 MPa, and the pressure of the air bladder 11 is less than this set value. After prolonged operation and wear, the oil seal 12 leaks oil. The air bladder 11 expands, allowing bearing grease from the oil reservoir 7 to enter the bearing 1 for automatic oil replenishment. To prevent the air bladder 11 from rebounding and contracting, a spring 13 is installed inside. The air bladder 11 is made of rubber. The spring 13 softens as the rubber ages, causing the air bladder 11 to expand slowly, ensuring continuous oil filling. The oil seal 12 has a metal ring groove seal 14 structure. During use, wool fibers enter the sealing groove 15 of the metal ring groove seal 14 and mix with the leaked bearing grease to form an oil felt seal. Once the sealing groove 15 is completely blocked, the wool fibers stop entering the bearing 1. To prevent the metal ring groove seal 14 from wearing out too quickly, a thin-lip seal ring 16 is installed on it. The lip of the thin-lip seal ring 16 is made of PTFE wear-resistant material, preventing excessive leakage of bearing grease, extending the bearing's maintenance-free time, and improving its service life.
[0013] This concludes the description of the embodiments of the present invention.
[0014] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A maintenance-free bearing for textile machines, characterized in that, include: A tapered hole (3) is provided in the inner ring (2) of the bearing (1), and an oil injection hole (4) is provided on the tapered hole (3); a tapered shaft head (6) of the roller (5) is provided in the tapered hole (3), and an oil storage hole (7) is provided in the tapered shaft head (6), and an annular oil groove (10) is provided on the outside of the tapered shaft head (6); a check valve (9) is provided in the oil passage of the oil injection bolt (8), and the oil injection bolt (8) seals the oil storage hole (7) through the thread. An air bladder (11) is provided in the oil storage hole (7). Bearing grease is added to the oil storage hole (7) through the oil injection bolt (8), and the air bladder (11) is compressed. The sealing pressure of the lip of the oil seal (12) of the bearing (1) is greater than the pressure of the compressed air bladder (11). After the oil seal (12) wears and leaks oil for a long time, the air bladder (11) expands, and the bearing grease in the oil storage hole (7) enters the bearing (1) for automatic oil replenishment.
2. The maintenance-free bearing for textile machines according to claim 1, characterized in that: The airbag (11) is equipped with a spring (13), and the airbag (11) is made of rubber. The spring (13) softens as the rubber ages, causing the airbag (11) to expand slowly and work for a long time.
3. A maintenance-free bearing for textile machines according to claim 1 or 2, characterized in that: The oil seal (12) has a metal ring groove seal (14). During the use of the bearing (1), wool fibers enter the sealing groove (15) of the metal ring groove seal (14) and mix with the leaked bearing grease to form an oil felt sealing structure. After the sealing groove (15) is blocked, the wool fibers stop entering the bearing (1).
4. A maintenance-free bearing for textile machines according to claim 3, characterized in that: The metal annular groove seal (14) is provided with a thin lip seal ring (16), and the lip material of the thin lip seal ring (16) is a wear-resistant material of polytetrafluoroethylene.